X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=ltt%2Fbranches%2Fpoly%2Fltt%2Ftracefile.c;h=470eb5e09a619570bffa7a6e57d2a456fe3cb02c;hb=791dffa6f060fe553546337fde7ed58a16f41178;hp=00ffc9bf71a6a403ea9c5ee18f875e9291e18151;hpb=21ff84a0d872ff069d4ec62d0a5bed21bcfeeac5;p=lttv.git diff --git a/ltt/branches/poly/ltt/tracefile.c b/ltt/branches/poly/ltt/tracefile.c index 00ffc9bf..470eb5e0 100644 --- a/ltt/branches/poly/ltt/tracefile.c +++ b/ltt/branches/poly/ltt/tracefile.c @@ -1,6 +1,8 @@ /* This file is part of the Linux Trace Toolkit viewer - * Copyright (C) 2003-2004 Xiangxiu Yang, Mathieu Desnoyers + * Copyright (C) 2005 Mathieu Desnoyers * + * Complete rewrite from the original version made by XangXiu Yang. + * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License Version 2 as * published by the Free Software Foundation; @@ -16,6 +18,10 @@ * MA 02111-1307, USA. */ +#ifdef HAVE_CONFIG_H +#include +#endif + #include #include #include @@ -25,6 +31,9 @@ #include #include #include +#include +#include +#include // For realpath #include @@ -38,43 +47,63 @@ #include #include #include +#include + + +/* Facility names used in this file */ + +GQuark LTT_FACILITY_NAME_HEARTBEAT, + LTT_EVENT_NAME_HEARTBEAT; +GQuark LTT_TRACEFILE_NAME_FACILITIES; + +#ifndef g_open +#define g_open open +#endif + -#define DIR_NAME_SIZE 256 #define __UNUSED__ __attribute__((__unused__)) #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) -#define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) +#ifndef g_debug +#define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) +#endif -/* obtain the time of an event */ - -static inline LttTime getEventTime(LttTracefile * tf); +#define g_close close +/* Those macros must be called from within a function where page_size is a known + * variable */ +#define PAGE_MASK (~(page_size-1)) +#define PAGE_ALIGN(addr) (((addr)+page_size-1)&PAGE_MASK) /* set the offset of the fields belonging to the event, need the information of the archecture */ -void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace *t); +void set_fields_offsets(LttTracefile *tf, LttEventType *event_type); +//size_t get_fields_offsets(LttTracefile *tf, LttEventType *event_type, void *data); -/* get the size of the field type according to the archtecture's - size and endian type(info of the archecture) */ -static inline gint getFieldtypeSize(LttTracefile * tf, - LttEventType * evT, gint offsetRoot, - gint offsetParent, LttField *fld, void *evD, LttTrace* t); +/* get the size of the field type according to + * The facility size information. */ +static inline void preset_field_type_size(LttTracefile *tf, + LttEventType *event_type, + off_t offset_root, off_t offset_parent, + enum field_status *fixed_root, enum field_status *fixed_parent, + LttField *field); -/* read a fixed size or a block information from the file (fd) */ -int readFile(int fd, void * buf, size_t size, char * mesg); -int readBlock(LttTracefile * tf, int whichBlock); +/* map a fixed size or a block information from the file (fd) */ +static gint map_block(LttTracefile * tf, guint block_num); -/* calculate cycles per nsec for current block */ -void getCyclePerNsec(LttTracefile * t); - -/* reinitialize the info of the block which is already in the buffer */ -void updateTracefile(LttTracefile * tf); +/* calculate nsec per cycles for current block */ +#if 0 +static guint32 calc_nsecs_per_cycle(LttTracefile * t); +static guint64 cycles_2_ns(LttTracefile *tf, guint64 cycles); +#endif //0 /* go to the next event */ -int skipEvent(LttTracefile * t); +static int ltt_seek_next_event(LttTracefile *tf); +void ltt_update_event_size(LttTracefile *tf); +#if 0 /* Functions to parse system.xml file (using glib xml parser) */ static void parser_start_element (GMarkupParseContext __UNUSED__ *context, const gchar *element_name, @@ -149,6 +178,107 @@ static void parser_characters (GMarkupParseContext __UNUSED__ *context, LttSystemDescription* des = (LttSystemDescription* )user_data; des->description = g_strdup(text); } +#endif //0 +LttFacility *ltt_trace_get_facility_by_num(LttTrace *t, + guint num) +{ + g_assert(num < t->facilities_by_num->len); + + return &g_array_index(t->facilities_by_num, LttFacility, num); + +} + +guint ltt_trace_get_num_cpu(LttTrace *t) +{ + return t->num_cpu; +} + + +/* trace can be NULL + * + * Return value : 0 success, 1 bad tracefile + */ +int parse_trace_header(void *header, LttTracefile *tf, LttTrace *t) +{ + guint32 *magic_number = (guint32*)header; + struct ltt_trace_header_any *any = (struct ltt_trace_header_any *)header; + + if(*magic_number == LTT_MAGIC_NUMBER) + tf->reverse_bo = 0; + else if(*magic_number == LTT_REV_MAGIC_NUMBER) + tf->reverse_bo = 1; + else /* invalid magic number, bad tracefile ! */ + return 1; + + /* Get float byte order : might be different from int byte order + * (or is set to 0 if the trace has no float (kernel trace)) */ + tf->float_word_order = any->float_word_order; + + if(t) { + t->arch_type = ltt_get_uint32(LTT_GET_BO(tf), + &any->arch_type); + t->arch_variant = ltt_get_uint32(LTT_GET_BO(tf), + &any->arch_variant); + t->arch_size = any->arch_size; + t->ltt_major_version = any->major_version; + t->ltt_minor_version = any->minor_version; + t->flight_recorder = any->flight_recorder; + t->has_heartbeat = any->has_heartbeat; + t->has_alignment = any->has_alignment; + t->has_tsc = any->has_tsc; + } + + + switch(any->major_version) { + + case 0: + switch(any->minor_version) { + case 3: + { + tf->buffer_header_size = + sizeof(struct ltt_block_start_header) + + sizeof(struct ltt_trace_header_0_3); + g_warning("Unsupported trace version : %hhu.%hhu", + any->major_version, any->minor_version); + return 1; + } + break; + case 4: + { + struct ltt_trace_header_0_4 *vheader = + (struct ltt_trace_header_0_4 *)header; + tf->buffer_header_size = + sizeof(struct ltt_block_start_header) + + sizeof(struct ltt_trace_header_0_4); + if(t) { + t->start_freq = ltt_get_uint64(LTT_GET_BO(tf), + &vheader->start_freq); + t->start_tsc = ltt_get_uint64(LTT_GET_BO(tf), + &vheader->start_tsc); + t->start_monotonic = ltt_get_uint64(LTT_GET_BO(tf), + &vheader->start_monotonic); + t->start_time = ltt_get_time(LTT_GET_BO(tf), + &vheader->start_time); + } + } + break; + default: + g_warning("Unsupported trace version : %hhu.%hhu", + any->major_version, any->minor_version); + return 1; + } + break; + + default: + g_warning("Unsupported trace version : %hhu.%hhu", + any->major_version, any->minor_version); + return 1; + } + + + return 0; +} + /***************************************************************************** @@ -157,67 +287,111 @@ static void parser_characters (GMarkupParseContext __UNUSED__ *context, *Input params * t : the trace containing the tracefile * fileName : path name of the trace file + * tf : the tracefile structure *Return value - * : a pointer to a tracefile + * : 0 for success, -1 otherwise. ****************************************************************************/ -LttTracefile* ltt_tracefile_open(LttTrace * t, char * fileName) +gint ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf) { - LttTracefile * tf; struct stat lTDFStat; /* Trace data file status */ - - tf = g_new(LttTracefile, 1); + struct ltt_block_start_header *header; + int page_size = getpagesize(); //open the file - tf->name = g_strdup(fileName); + tf->long_name = g_quark_from_string(fileName); tf->trace = t; - tf->fd = open(fileName, O_RDONLY, 0); + tf->fd = open(fileName, O_RDONLY); if(tf->fd < 0){ g_warning("Unable to open input data file %s\n", fileName); - g_free(tf->name); - g_free(tf); - return NULL; + goto end; } // Get the file's status if(fstat(tf->fd, &lTDFStat) < 0){ g_warning("Unable to get the status of the input data file %s\n", fileName); - g_free(tf->name); - close(tf->fd); - g_free(tf); - return NULL; + goto close_file; } // Is the file large enough to contain a trace - if(lTDFStat.st_size < (off_t)(sizeof(BlockStart) + EVENT_HEADER_SIZE)){ + if(lTDFStat.st_size < + (off_t)(sizeof(struct ltt_block_start_header) + + sizeof(struct ltt_trace_header_any))){ g_print("The input data file %s does not contain a trace\n", fileName); - g_free(tf->name); - close(tf->fd); - g_free(tf); - return NULL; + goto close_file; + } + + /* Temporarily map the buffer start header to get trace information */ + /* Multiple of pages aligned head */ + tf->buffer.head = mmap(0, + PAGE_ALIGN(sizeof(struct ltt_block_start_header) + + sizeof(struct ltt_trace_header_any)), PROT_READ, + MAP_PRIVATE, tf->fd, 0); + if(tf->buffer.head == MAP_FAILED) { + perror("Error in allocating memory for buffer of tracefile"); + goto close_file; } + g_assert( ( (guint)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. + header = (struct ltt_block_start_header*)tf->buffer.head; + + if(parse_trace_header(header->trace, tf, NULL)) { + g_warning("parse_trace_header error"); + goto unmap_file; + } + //store the size of the file tf->file_size = lTDFStat.st_size; - tf->block_size = t->system_description->ltt_block_size; - tf->block_number = tf->file_size / tf->block_size; - tf->which_block = 0; - - //allocate memory to contain the info of a block - tf->buffer = (void *) g_new(char, t->system_description->ltt_block_size); + tf->buf_size = ltt_get_uint32(LTT_GET_BO(tf), &header->buf_size); + tf->num_blocks = tf->file_size / tf->buf_size; + + if(munmap(tf->buffer.head, + PAGE_ALIGN(sizeof(struct ltt_block_start_header) + + sizeof(struct ltt_trace_header_any)))) { + g_warning("unmap size : %u\n", + PAGE_ALIGN(sizeof(struct ltt_block_start_header) + + sizeof(struct ltt_trace_header_any))); + perror("munmap error"); + g_assert(0); + } + tf->buffer.head = NULL; //read the first block - if(readBlock(tf,1)) exit(1); + if(map_block(tf,0)) { + perror("Cannot map block for tracefile"); + goto close_file; + } + + return 0; - return tf; + /* Error */ +unmap_file: + if(munmap(tf->buffer.head, + PAGE_ALIGN(sizeof(struct ltt_block_start_header) + + sizeof(struct ltt_trace_header_any)))) { + g_warning("unmap size : %u\n", + PAGE_ALIGN(sizeof(struct ltt_block_start_header) + + sizeof(struct ltt_trace_header_any))); + perror("munmap error"); + g_assert(0); + } +close_file: + close(tf->fd); +end: + return -1; } +LttTrace *ltt_tracefile_get_trace(LttTracefile *tf) +{ + return tf->trace; +} +#if 0 /***************************************************************************** *Open control and per cpu tracefiles ****************************************************************************/ -void ltt_tracefile_open_cpu(LttTrace *t, char * tracefile_name) +void ltt_tracefile_open_cpu(LttTrace *t, gchar * tracefile_name) { LttTracefile * tf; tf = ltt_tracefile_open(t,tracefile_name); @@ -226,7 +400,7 @@ void ltt_tracefile_open_cpu(LttTrace *t, char * tracefile_name) g_ptr_array_add(t->per_cpu_tracefiles, tf); } -gint ltt_tracefile_open_control(LttTrace *t, char * control_name) +gint ltt_tracefile_open_control(LttTrace *t, gchar * control_name) { LttTracefile * tf; LttEvent ev; @@ -250,7 +424,7 @@ gint ltt_tracefile_open_control(LttTrace *t, char * control_name) if(ev.event_id == TRACE_FACILITY_LOAD){ pos = ev.data; - fLoad.name = (char*)pos; + fLoad.name = (gchar*)pos; fLoad.checksum = *(LttChecksum*)(pos + strlen(fLoad.name)); fLoad.base_code = *(guint32 *)(pos + strlen(fLoad.name) + sizeof(LttChecksum)); @@ -278,6 +452,7 @@ gint ltt_tracefile_open_control(LttTrace *t, char * control_name) } return 0; } +#endif //0 /***************************************************************************** *Function name @@ -288,20 +463,30 @@ gint ltt_tracefile_open_control(LttTrace *t, char * control_name) void ltt_tracefile_close(LttTracefile *t) { - g_free(t->name); - g_free(t->buffer); + int page_size = getpagesize(); + + if(t->buffer.head != NULL) + if(munmap(t->buffer.head, PAGE_ALIGN(t->buf_size))) { + g_warning("unmap size : %u\n", + PAGE_ALIGN(t->buf_size)); + perror("munmap error"); + g_assert(0); + } + close(t->fd); - g_free(t); } /***************************************************************************** *Get system information ****************************************************************************/ -gint getSystemInfo(LttSystemDescription* des, char * pathname) +#if 0 +gint getSystemInfo(LttSystemDescription* des, gchar * pathname) { - FILE * fp; - char buf[DIR_NAME_SIZE]; + int fd; + GIOChannel *iochan; + gchar *buf = NULL; + gsize length; GMarkupParseContext * context; GError * error = NULL; @@ -314,58 +499,85 @@ gint getSystemInfo(LttSystemDescription* des, char * pathname) NULL /* error */ }; - fp = fopen(pathname,"r"); - if(!fp){ + fd = g_open(pathname, O_RDONLY, 0); + if(fd == -1){ g_warning("Can not open file : %s\n", pathname); return -1; } + iochan = g_io_channel_unix_new(fd); + context = g_markup_parse_context_new(&markup_parser, 0, des,NULL); - while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){ - if(!g_markup_parse_context_parse(context, buf, DIR_NAME_SIZE, &error)){ + //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){ + while(g_io_channel_read_line(iochan, &buf, &length, NULL, &error) + != G_IO_STATUS_EOF) { + + if(error != NULL) { + g_warning("Can not read xml file: \n%s\n", error->message); + g_error_free(error); + } + if(!g_markup_parse_context_parse(context, buf, length, &error)){ if(error != NULL) { g_warning("Can not parse xml file: \n%s\n", error->message); g_error_free(error); } g_markup_parse_context_free(context); - fclose(fp); + + g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ + if(error != NULL) { + g_warning("Can not close file: \n%s\n", error->message); + g_error_free(error); + } + + close(fd); return -1; } } g_markup_parse_context_free(context); - fclose(fp); + + g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ + if(error != NULL) { + g_warning("Can not close file: \n%s\n", error->message); + g_error_free(error); + } + + g_close(fd); + + g_free(buf); return 0; } +#endif //0 /***************************************************************************** *The following functions get facility/tracefile information ****************************************************************************/ - -gint getFacilityInfo(LttTrace *t, char* eventdefs) +#if 0 +gint getFacilityInfo(LttTrace *t, gchar* eventdefs) { - DIR * dir; - struct dirent *entry; - char * ptr; + GDir * dir; + const gchar * name; unsigned int i,j; LttFacility * f; LttEventType * et; - char name[DIR_NAME_SIZE]; + gchar fullname[DIR_NAME_SIZE]; + GError * error = NULL; + + dir = g_dir_open(eventdefs, 0, &error); - dir = opendir(eventdefs); - if(!dir) { - g_warning("Can not open directory: %s\n", eventdefs); + if(error != NULL) { + g_warning("Can not open directory: %s, %s\n", eventdefs, error->message); + g_error_free(error); return -1; } - while((entry = readdir(dir)) != NULL){ - ptr = &entry->d_name[strlen(entry->d_name)-4]; - if(strcmp(ptr,".xml") != 0) continue; - strcpy(name,eventdefs); - strcat(name,entry->d_name); - ltt_facility_open(t,name); - } - closedir(dir); + while((name = g_dir_read_name(dir)) != NULL){ + if(!g_pattern_match_simple("*.xml", name)) continue; + strcpy(fullname,eventdefs); + strcat(fullname,name); + ltt_facility_open(t,fullname); + } + g_dir_close(dir); for(j=0;jfacility_number;j++){ f = (LttFacility*)g_ptr_array_index(t->facilities, j); @@ -376,57 +588,7 @@ gint getFacilityInfo(LttTrace *t, char* eventdefs) } return 0; } - -gint getControlFileInfo(LttTrace *t, char* control) -{ - DIR * dir; - struct dirent *entry; - char name[DIR_NAME_SIZE]; - - dir = opendir(control); - if(!dir) { - g_warning("Can not open directory: %s\n", control); - return -1; - } - - while((entry = readdir(dir)) != NULL){ - if(strcmp(entry->d_name,"facilities") != 0 && - strcmp(entry->d_name,"interrupts") != 0 && - strcmp(entry->d_name,"processes") != 0) continue; - - strcpy(name,control); - strcat(name,entry->d_name); - if(ltt_tracefile_open_control(t,name)) - return -1; - } - closedir(dir); - return 0; -} - -gint getCpuFileInfo(LttTrace *t, char* cpu) -{ - DIR * dir; - struct dirent *entry; - char name[DIR_NAME_SIZE]; - - dir = opendir(cpu); - if(!dir) { - g_warning("Can not open directory: %s\n", cpu); - return -1; - } - - while((entry = readdir(dir)) != NULL){ - if(strcmp(entry->d_name,".") != 0 && - strcmp(entry->d_name,"..") != 0 && - strcmp(entry->d_name,".svn") != 0){ - strcpy(name,cpu); - strcat(name,entry->d_name); - ltt_tracefile_open_cpu(t,name); - }else continue; - } - closedir(dir); - return 0; -} +#endif //0 /***************************************************************************** *A trace is specified as a pathname to the directory containing all the @@ -447,7 +609,7 @@ gint getCpuFileInfo(LttTrace *t, char* cpu) * forgotten cases (.. were not used correctly before). * ****************************************************************************/ -void get_absolute_pathname(const char *pathname, char * abs_pathname) +void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname) { abs_pathname[0] = '\0'; @@ -462,690 +624,1088 @@ void get_absolute_pathname(const char *pathname, char * abs_pathname) return; } -LttTrace *ltt_trace_open(const char *pathname) -{ - LttTrace * t; - LttSystemDescription * sys_description; - char eventdefs[DIR_NAME_SIZE]; - char info[DIR_NAME_SIZE]; - char control[DIR_NAME_SIZE]; - char cpu[DIR_NAME_SIZE]; - char tmp[DIR_NAME_SIZE]; - char abs_path[DIR_NAME_SIZE]; - gboolean has_slash = FALSE; +/* Search for something like : .*_.* + * + * The left side is the name, the right side is the number. + */ - get_absolute_pathname(pathname, abs_path); - //establish the pathname to different directories - if(abs_path[strlen(abs_path)-1] == '/')has_slash = TRUE; - strcpy(eventdefs,abs_path); - if(!has_slash)strcat(eventdefs,"/"); - strcat(eventdefs,"eventdefs/"); - - strcpy(info,abs_path); - if(!has_slash)strcat(info,"/"); - strcat(info,"info/"); - - strcpy(control,abs_path); - if(!has_slash)strcat(control,"/"); - strcat(control,"control/"); - - strcpy(cpu,abs_path); - if(!has_slash)strcat(cpu,"/"); - strcat(cpu,"cpu/"); - - //new trace - sys_description = g_new(LttSystemDescription, 1); - t = g_new(LttTrace, 1); - t->pathname = g_strdup(abs_path); - t->facility_number = 0; - t->control_tracefile_number = 0; - t->per_cpu_tracefile_number = 0; - t->system_description = sys_description; - t->control_tracefiles = g_ptr_array_new(); - t->per_cpu_tracefiles = g_ptr_array_new(); - t->facilities = g_ptr_array_new(); - getDataEndianType(&(t->my_arch_size), &(t->my_arch_endian)); - - //get system description - strcpy(tmp,info); - strcat(tmp,"system.xml"); - if(getSystemInfo(sys_description, tmp)) { - g_ptr_array_free(t->facilities, TRUE); - g_ptr_array_free(t->per_cpu_tracefiles, TRUE); - g_ptr_array_free(t->control_tracefiles, TRUE); - g_free(sys_description); - g_free(t->pathname); - g_free(t); - return NULL; +int get_tracefile_name_number(const gchar *raw_name, + GQuark *name, + guint *num) +{ + guint raw_name_len = strlen(raw_name); + gchar char_name[PATH_MAX]; + int i; + int underscore_pos; + long int cpu_num; + gchar *endptr; + + for(i=raw_name_len-1;i>=0;i--) { + if(raw_name[i] == '_') break; } + if(i==0) /* Either not found or name length is 0 */ + return -1; + underscore_pos = i; + cpu_num = strtol(raw_name+underscore_pos+1, &endptr, 10); - - //get facilities info - if(getFacilityInfo(t,eventdefs)) { - g_ptr_array_free(t->facilities, TRUE); - g_ptr_array_free(t->per_cpu_tracefiles, TRUE); - g_ptr_array_free(t->control_tracefiles, TRUE); - g_free(sys_description); - g_free(t->pathname); - g_free(t); - return NULL; - } + if(endptr == raw_name+underscore_pos+1) + return -1; /* No digit */ + if(cpu_num == LONG_MIN || cpu_num == LONG_MAX) + return -1; /* underflow / overflow */ - //get control tracefile info - getControlFileInfo(t,control); - /* - if(getControlFileInfo(t,control)) { - g_ptr_array_free(t->facilities, TRUE); - g_ptr_array_free(t->per_cpu_tracefiles, TRUE); - g_ptr_array_free(t->control_tracefiles, TRUE); - g_free(sys_description); - g_free(t->pathname); - g_free(t); - return NULL; - }*/ // With fatal error - - //get cpu tracefile info - if(getCpuFileInfo(t,cpu)) { - g_ptr_array_free(t->facilities, TRUE); - g_ptr_array_free(t->per_cpu_tracefiles, TRUE); - g_ptr_array_free(t->control_tracefiles, TRUE); - g_free(sys_description); - g_free(t->pathname); - g_free(t); - return NULL; - } - - return t; + strncpy(char_name, raw_name, underscore_pos); + + char_name[underscore_pos] = '\0'; + + *name = g_quark_from_string(char_name); + *num = cpu_num; + + return 0; } -char * ltt_trace_name(LttTrace *t) + +GData **ltt_trace_get_tracefiles_groups(LttTrace *trace) { - return t->pathname; + return &trace->tracefiles; } -/****************************************************************************** - * When we copy a trace, we want all the opening actions to happen again : - * the trace will be reopened and totally independant from the original. - * That's why we call ltt_trace_open. - *****************************************************************************/ -LttTrace *ltt_trace_copy(LttTrace *self) +void compute_tracefile_group(GQuark key_id, + GArray *group, + struct compute_tracefile_group_args *args) { - return ltt_trace_open(self->pathname); + int i; + LttTracefile *tf; + + for(i=0; ilen; i++) { + tf = &g_array_index (group, LttTracefile, i); + if(tf->cpu_online) + args->func(tf, args->func_args); + } } -void ltt_trace_close(LttTrace *t) -{ - unsigned int i; - LttTracefile * tf; - LttFacility * f; - g_free(t->pathname); - - //free system_description - g_free(t->system_description->description); - g_free(t->system_description->node_name); - g_free(t->system_description->domain_name); - g_free(t->system_description->kernel_name); - g_free(t->system_description->kernel_release); - g_free(t->system_description->kernel_version); - g_free(t->system_description->machine); - g_free(t->system_description->processor); - g_free(t->system_description->hardware_platform); - g_free(t->system_description->operating_system); - g_free(t->system_description); - - //free control_tracefiles - for(i=0;icontrol_tracefile_number;i++){ - tf = (LttTracefile*)g_ptr_array_index(t->control_tracefiles,i); - ltt_tracefile_close(tf); +void ltt_tracefile_group_destroy(gpointer data) +{ + GArray *group = (GArray *)data; + int i; + LttTracefile *tf; + + for(i=0; ilen; i++) { + tf = &g_array_index (group, LttTracefile, i); + if(tf->cpu_online) + ltt_tracefile_close(tf); } - g_ptr_array_free(t->control_tracefiles, TRUE); + g_array_free(group, TRUE); +} - //free per_cpu_tracefiles - for(i=0;iper_cpu_tracefile_number;i++){ - tf = (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles,i); - ltt_tracefile_close(tf); - } - g_ptr_array_free(t->per_cpu_tracefiles, TRUE); +gboolean ltt_tracefile_group_has_cpu_online(gpointer data) +{ + GArray *group = (GArray *)data; + int i; + LttTracefile *tf; - //free facilities - for(i=0;ifacility_number;i++){ - f = (LttFacility*)g_ptr_array_index(t->facilities,i); - ltt_facility_close(f); + for(i=0; ilen; i++) { + tf = &g_array_index (group, LttTracefile, i); + if(tf->cpu_online) return 1; } - g_ptr_array_free(t->facilities, TRUE); - - g_free(t); - - g_blow_chunks(); + return 0; } -/***************************************************************************** - *Get the system description of the trace - ****************************************************************************/ +/* Open each tracefile under a specific directory. Put them in a + * GData : permits to access them using their tracefile group pathname. + * i.e. access control/modules tracefile group by index : + * "control/module". + * + * relative path is the path relative to the trace root + * root path is the full path + * + * A tracefile group is simply an array where all the per cpu tracefiles sits. + */ -LttSystemDescription *ltt_trace_system_description(LttTrace *t) +static int open_tracefiles(LttTrace *trace, gchar *root_path, + gchar *relative_path) { - return t->system_description; -} + DIR *dir = opendir(root_path); + struct dirent *entry; + struct stat stat_buf; + int ret; + + gchar path[PATH_MAX]; + int path_len; + gchar *path_ptr; + + int rel_path_len; + gchar rel_path[PATH_MAX]; + gchar *rel_path_ptr; + LttTracefile tmp_tf; + + if(dir == NULL) { + perror(root_path); + return ENOENT; + } -/***************************************************************************** - * The following functions discover the facilities of the trace - ****************************************************************************/ + strncpy(path, root_path, PATH_MAX-1); + path_len = strlen(path); + path[path_len] = '/'; + path_len++; + path_ptr = path + path_len; + + strncpy(rel_path, relative_path, PATH_MAX-1); + rel_path_len = strlen(rel_path); + rel_path[rel_path_len] = '/'; + rel_path_len++; + rel_path_ptr = rel_path + rel_path_len; + + while((entry = readdir(dir)) != NULL) { + + if(entry->d_name[0] == '.') continue; + + strncpy(path_ptr, entry->d_name, PATH_MAX - path_len); + strncpy(rel_path_ptr, entry->d_name, PATH_MAX - rel_path_len); + + ret = stat(path, &stat_buf); + if(ret == -1) { + perror(path); + continue; + } + + g_debug("Tracefile file or directory : %s\n", path); + + if(strcmp(rel_path, "/eventdefs") == 0) continue; + + if(S_ISDIR(stat_buf.st_mode)) { + + g_debug("Entering subdirectory...\n"); + ret = open_tracefiles(trace, path, rel_path); + if(ret < 0) continue; + } else if(S_ISREG(stat_buf.st_mode)) { + GQuark name; + guint num; + GArray *group; + + if(get_tracefile_name_number(rel_path, &name, &num)) + continue; /* invalid name */ + + g_debug("Opening file.\n"); + if(ltt_tracefile_open(trace, path, &tmp_tf)) { + g_info("Error opening tracefile %s", path); -unsigned ltt_trace_facility_number(LttTrace *t) -{ - return (unsigned)(t->facility_number); -} + continue; /* error opening the tracefile : bad magic number ? */ + } -LttFacility *ltt_trace_facility_get(LttTrace *t, unsigned i) -{ - return (LttFacility*)g_ptr_array_index(t->facilities, i); -} + g_debug("Tracefile name is %s and number is %u", + g_quark_to_string(name), num); + + tmp_tf.cpu_online = 1; + tmp_tf.cpu_num = num; + tmp_tf.name = name; + + group = g_datalist_id_get_data(&trace->tracefiles, name); + if(group == NULL) { + /* Elements are automatically cleared when the array is allocated. + * It makes the cpu_online variable set to 0 : cpu offline, by default. + */ + group = g_array_sized_new (FALSE, TRUE, sizeof(LttTracefile), 10); + g_datalist_id_set_data_full(&trace->tracefiles, name, + group, ltt_tracefile_group_destroy); + } -/***************************************************************************** - *Function name - * ltt_trace_facility_find : find facilities in the trace - *Input params - * t : the trace - * name : facility name - *Output params - * position : position of the facility in the trace - *Return value - * : the number of facilities - ****************************************************************************/ + /* Add the per cpu tracefile to the named group */ + unsigned int old_len = group->len; + if(num+1 > old_len) + group = g_array_set_size(group, num+1); + g_array_index (group, LttTracefile, num) = tmp_tf; -unsigned ltt_trace_facility_find(LttTrace *t, char *name, unsigned *position) -{ - unsigned int i, count=0; - LttFacility * f; - for(i=0;ifacility_number;i++){ - f = (LttFacility*)g_ptr_array_index(t->facilities, i); - if(strcmp(f->name,name)==0){ - count++; - if(count==1) *position = i; - }else{ - if(count) break; - } - } - return count; + } + } + + closedir(dir); + + return 0; } -/***************************************************************************** - * Functions to discover all the event types in the trace - ****************************************************************************/ +/* ltt_get_facility_description + * + * Opens the file corresponding to the requested facility (identified by fac_id + * and checksum). + * + * The name searched is : %trace root%/eventdefs/facname_checksum.xml + * + * Returns 0 on success, or 1 on failure. + */ -unsigned ltt_trace_eventtype_number(LttTrace *t) +static int ltt_get_facility_description(LttFacility *f, + LttTrace *t, + LttTracefile *fac_tf) { - unsigned int i; - unsigned count = 0; - unsigned int num = t->facility_number; - LttFacility * f; + char desc_file_name[PATH_MAX]; + const gchar *text; + guint textlen; + gint err; + + text = g_quark_to_string(t->pathname); + textlen = strlen(text); - for(i=0;ifacilities, i); - count += f->event_number; - } - return count; -} + if(textlen >= PATH_MAX) goto name_error; + strcpy(desc_file_name, text); -/* FIXME : performances could be improved with a better design for this - * function : sequential search through a container has never been the - * best on the critical path. */ -LttFacility * ltt_trace_facility_by_id(LttTrace * trace, unsigned id) -{ - LttFacility * facility = NULL; - unsigned int i; - unsigned int num = trace->facility_number; - GPtrArray *facilities = trace->facilities; + text = "/eventdefs/"; + textlen+=strlen(text); + if(textlen >= PATH_MAX) goto name_error; + strcat(desc_file_name, text); + + text = g_quark_to_string(f->name); + textlen+=strlen(text); + if(textlen >= PATH_MAX) goto name_error; + strcat(desc_file_name, text); +#if 0 + text = "_"; + textlen+=strlen(text); + if(textlen >= PATH_MAX) goto name_error; + strcat(desc_file_name, text); - for(i=0;unlikely(ibase_id; + err = snprintf(desc_file_name+textlen, PATH_MAX-textlen-1, + "%u", f->checksum); + if(err < 0) goto name_error; - if(likely(id >= base_id && - id < base_id + iter_facility->event_number)) { - facility = iter_facility; - break; - } else { - i++; - } - } + textlen=strlen(desc_file_name); - return facility; -} +#endif //0 + text = ".xml"; + textlen+=strlen(text); + if(textlen >= PATH_MAX) goto name_error; + strcat(desc_file_name, text); -LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned evId) -{ - LttEventType *event_type; - - LttFacility * f; - f = ltt_trace_facility_by_id(t,evId); + err = ltt_facility_open(f, t, desc_file_name); + if(err) goto facility_error; - if(unlikely(!f)) event_type = NULL; - else event_type = f->events[evId - f->base_id]; + return 0; - return event_type; +facility_error: +name_error: + return 1; } -/***************************************************************************** - *There is one "per cpu" tracefile for each CPU, numbered from 0 to - *the maximum number of CPU in the system. When the number of CPU installed - *is less than the maximum, some positions are unused. There are also a - *number of "control" tracefiles (facilities, interrupts...). - ****************************************************************************/ -unsigned ltt_trace_control_tracefile_number(LttTrace *t) +static void ltt_fac_ids_destroy(gpointer data) { - return t->control_tracefile_number; -} + GArray *fac_ids = (GArray *)data; -unsigned ltt_trace_per_cpu_tracefile_number(LttTrace *t) -{ - return t->per_cpu_tracefile_number; + g_array_free(fac_ids, TRUE); } -/***************************************************************************** - *It is possible to search for the tracefiles by name or by CPU position. - *The index within the tracefiles of the same type is returned if found - *and a negative value otherwise. - ****************************************************************************/ -int ltt_trace_control_tracefile_find(LttTrace *t, const gchar *name) +/* Presumes the tracefile is already seeked at the beginning. It makes sense, + * because it must be done just after the opening */ +static int ltt_process_facility_tracefile(LttTracefile *tf) { - LttTracefile * tracefile; - unsigned int i; - for(i=0;icontrol_tracefile_number;i++){ - tracefile = (LttTracefile*)g_ptr_array_index(t->control_tracefiles, i); - if(strcmp(tracefile->name, name)==0)break; - } - if(i == t->control_tracefile_number) return -1; - return i; -} + int err; + LttFacility *fac; + GArray *fac_ids; + guint i; + LttEventType *et; + + while(1) { + err = ltt_tracefile_read_seek(tf); + if(err == EPERM) goto seek_error; + else if(err == ERANGE) break; /* End of tracefile */ + + err = ltt_tracefile_read_update_event(tf); + if(err) goto update_error; + + /* We are on a facility load/or facility unload/ or heartbeat event */ + /* The rules are : + * * facility 0 is hardcoded : this is the core facility. It will be shown + * in the facility array though, and is shown as "loaded builtin" in the + * trace. + * It contains event : + * 0 : facility load + * 1 : facility unload + * 2 : state dump facility load + * 3 : heartbeat + */ + if(tf->event.facility_id != LTT_FACILITY_CORE) { + /* Should only contain core facility */ + g_warning("Error in processing facility file %s, " + "should not contain facility id %u.", g_quark_to_string(tf->name), + tf->event.facility_id); + err = EPERM; + goto fac_id_error; + } else { + + struct LttFacilityLoad *fac_load_data; + struct LttStateDumpFacilityLoad *fac_state_dump_load_data; + char *fac_name; + + // FIXME align + switch((enum ltt_core_events)tf->event.event_id) { + case LTT_EVENT_FACILITY_LOAD: + fac_name = (char*)(tf->event.data); + g_debug("Doing LTT_EVENT_FACILITY_LOAD of facility %s", + fac_name); + fac_load_data = + (struct LttFacilityLoad *) + (tf->event.data + strlen(fac_name) + 1); + fac = &g_array_index (tf->trace->facilities_by_num, LttFacility, + ltt_get_uint32(LTT_GET_BO(tf), &fac_load_data->id)); + g_assert(fac->exists == 0); + fac->name = g_quark_from_string(fac_name); + fac->checksum = ltt_get_uint32(LTT_GET_BO(tf), + &fac_load_data->checksum); + fac->id = ltt_get_uint32(LTT_GET_BO(tf), &fac_load_data->id); + fac->pointer_size = ltt_get_uint32(LTT_GET_BO(tf), + &fac_load_data->pointer_size); + fac->long_size = ltt_get_uint32(LTT_GET_BO(tf), + &fac_load_data->long_size); + fac->size_t_size = ltt_get_uint32(LTT_GET_BO(tf), + &fac_load_data->size_t_size); + fac->alignment = ltt_get_uint32(LTT_GET_BO(tf), + &fac_load_data->alignment); + + if(ltt_get_facility_description(fac, tf->trace, tf)) + continue; /* error opening description */ + + fac->trace = tf->trace; + + /* Preset the field offsets */ + for(i=0; ievents->len; i++){ + et = &g_array_index(fac->events, LttEventType, i); + set_fields_offsets(tf, et); + } -/* not really useful. We just have to know that cpu tracefiles - * comes before control tracefiles. - */ -int ltt_trace_per_cpu_tracefile_find(LttTrace *t, const gchar *name) -{ - LttTracefile * tracefile; - unsigned int i; - for(i=0;iper_cpu_tracefile_number;i++){ - tracefile = (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles, i); - if(strcmp(tracefile->name, name)==0)break; - } - if(i == t->per_cpu_tracefile_number) return -1; - return i; -} + fac->exists = 1; -/***************************************************************************** - *Get a specific tracefile - ****************************************************************************/ + fac_ids = g_datalist_id_get_data(&tf->trace->facilities_by_name, + fac->name); + if(fac_ids == NULL) { + fac_ids = g_array_sized_new (FALSE, TRUE, sizeof(guint), 1); + g_datalist_id_set_data_full(&tf->trace->facilities_by_name, + fac->name, + fac_ids, ltt_fac_ids_destroy); + } + g_array_append_val(fac_ids, fac->id); + + break; + case LTT_EVENT_FACILITY_UNLOAD: + g_debug("Doing LTT_EVENT_FACILITY_UNLOAD"); + /* We don't care about unload : facilities ID are valid for the whole + * trace. They simply won't be used after the unload. */ + break; + case LTT_EVENT_STATE_DUMP_FACILITY_LOAD: + fac_name = (char*)(tf->event.data); + g_debug("Doing LTT_EVENT_STATE_DUMP_FACILITY_LOAD of facility %s", + fac_name); + fac_state_dump_load_data = + (struct LttStateDumpFacilityLoad *) + (tf->event.data + strlen(fac_name) + 1); + fac = &g_array_index (tf->trace->facilities_by_num, LttFacility, + ltt_get_uint32(LTT_GET_BO(tf), &fac_state_dump_load_data->id)); + g_assert(fac->exists == 0); + fac->name = g_quark_from_string(fac_name); + fac->checksum = ltt_get_uint32(LTT_GET_BO(tf), + &fac_state_dump_load_data->checksum); + fac->id = fac_state_dump_load_data->id; + fac->pointer_size = ltt_get_uint32(LTT_GET_BO(tf), + &fac_state_dump_load_data->pointer_size); + fac->long_size = ltt_get_uint32(LTT_GET_BO(tf), + &fac_state_dump_load_data->long_size); + fac->size_t_size = ltt_get_uint32(LTT_GET_BO(tf), + &fac_state_dump_load_data->size_t_size); + fac->alignment = ltt_get_uint32(LTT_GET_BO(tf), + &fac_state_dump_load_data->alignment); + if(ltt_get_facility_description(fac, tf->trace, tf)) + continue; /* error opening description */ + + fac->trace = tf->trace; + + /* Preset the field offsets */ + for(i=0; ievents->len; i++){ + et = &g_array_index(fac->events, LttEventType, i); + set_fields_offsets(tf, et); + } -LttTracefile *ltt_trace_control_tracefile_get(LttTrace *t, unsigned i) -{ - return (LttTracefile*)g_ptr_array_index(t->control_tracefiles, i); -} + fac->exists = 1; + + fac_ids = g_datalist_id_get_data(&tf->trace->facilities_by_name, + fac->name); + if(fac_ids == NULL) { + fac_ids = g_array_sized_new (FALSE, TRUE, sizeof(guint), 1); + g_datalist_id_set_data_full(&tf->trace->facilities_by_name, + fac->name, + fac_ids, ltt_fac_ids_destroy); + } + g_array_append_val(fac_ids, fac->id); + + break; + case LTT_EVENT_HEARTBEAT: + break; + default: + g_warning("Error in processing facility file %s, " + "unknown event id %hhu in core facility.", + g_quark_to_string(tf->name), + tf->event.event_id); + err = EPERM; + goto event_id_error; + } + } + } + return 0; -LttTracefile *ltt_trace_per_cpu_tracefile_get(LttTrace *t, unsigned i) -{ - return (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles, i); + /* Error handling */ +event_id_error: +fac_id_error: +update_error: +seek_error: + g_warning("An error occured in facility tracefile parsing"); + return err; } -/***************************************************************************** - * Get the start time and end time of the trace - ****************************************************************************/ -void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end) +LttTrace *ltt_trace_open(const gchar *pathname) { - LttTime startSmall, startTmp, endBig, endTmp; - unsigned int i, j=0; - LttTracefile * tf; + gchar abs_path[PATH_MAX]; + LttTrace * t; + LttTracefile *tf; + GArray *group; + int i, ret; + struct ltt_block_start_header *header; + DIR *dir; + struct dirent *entry; + guint control_found = 0; + guint eventdefs_found = 0; + struct stat stat_buf; + gchar path[PATH_MAX]; + + t = g_new(LttTrace, 1); + if(!t) goto alloc_error; + + get_absolute_pathname(pathname, abs_path); + t->pathname = g_quark_from_string(abs_path); - for(i=0;icontrol_tracefile_number;i++){ - tf = g_ptr_array_index(t->control_tracefiles, i); - readBlock(tf,1); - startTmp = tf->a_block_start->time; - readBlock(tf,tf->block_number); - endTmp = tf->a_block_end->time; - if(i==0){ - startSmall = startTmp; - endBig = endTmp; - j = 1; - continue; + g_datalist_init(&t->tracefiles); + + /* Test to see if it looks like a trace */ + dir = opendir(abs_path); + if(dir == NULL) { + perror(abs_path); + goto open_error; + } + while((entry = readdir(dir)) != NULL) { + strcpy(path, abs_path); + strcat(path, "/"); + strcat(path, entry->d_name); + ret = stat(path, &stat_buf); + if(ret == -1) { + perror(path); + continue; + } + if(S_ISDIR(stat_buf.st_mode)) { + if(strcmp(entry->d_name, "control") == 0) { + control_found = 1; + } + if(strcmp(entry->d_name, "eventdefs") == 0) { + eventdefs_found = 1; + } } - if(ltt_time_compare(startSmall,startTmp) > 0) startSmall = startTmp; - if(ltt_time_compare(endBig,endTmp) < 0) endBig = endTmp; + } + closedir(dir); + + if(!control_found || !eventdefs_found) goto find_error; + + /* Open all the tracefiles */ + if(open_tracefiles(t, abs_path, "")) { + g_warning("Error opening tracefile %s", abs_path); + goto find_error; + } + + /* Prepare the facilities containers : array and mapping */ + /* Array is zeroed : the "exists" field is set to false by default */ + t->facilities_by_num = g_array_sized_new (FALSE, + TRUE, sizeof(LttFacility), + NUM_FACILITIES); + t->facilities_by_num = g_array_set_size(t->facilities_by_num, NUM_FACILITIES); + + g_datalist_init(&t->facilities_by_name); + + /* Parse each trace control/facilitiesN files : get runtime fac. info */ + group = g_datalist_id_get_data(&t->tracefiles, LTT_TRACEFILE_NAME_FACILITIES); + if(group == NULL) { + g_error("Trace %s has no facility tracefile", abs_path); + g_assert(0); + goto facilities_error; } - for(i=0;iper_cpu_tracefile_number;i++){ - tf = g_ptr_array_index(t->per_cpu_tracefiles, i); - readBlock(tf,1); - startTmp = tf->a_block_start->time; - readBlock(tf,tf->block_number); - endTmp = tf->a_block_end->time; - if(j == 0 && i==0){ - startSmall = startTmp; - endBig = endTmp; - continue; - } - if(ltt_time_compare(startSmall,startTmp) > 0) startSmall = startTmp; - if(ltt_time_compare(endBig,endTmp) < 0) endBig = endTmp; + /* Get the trace information for the control/facility 0 tracefile */ + g_assert(group->len > 0); + tf = &g_array_index (group, LttTracefile, 0); + header = (struct ltt_block_start_header*)tf->buffer.head; + g_assert(parse_trace_header(header->trace, + tf, t) == 0); + + t->num_cpu = group->len; + + for(i=0; ilen; i++) { + tf = &g_array_index (group, LttTracefile, i); + if(ltt_process_facility_tracefile(tf)) + goto facilities_error; } + + return t; + + /* Error handling */ +facilities_error: + g_datalist_clear(&t->facilities_by_name); + g_array_free(t->facilities_by_num, TRUE); +find_error: + g_datalist_clear(&t->tracefiles); +open_error: + g_free(t); +alloc_error: + return NULL; - if(start != NULL) *start = startSmall; - if(end != NULL) *end = endBig; } +GQuark ltt_trace_name(const LttTrace *t) +{ + return t->pathname; +} -/***************************************************************************** - *Get the name of a tracefile - ****************************************************************************/ -char *ltt_tracefile_name(LttTracefile *tf) +/****************************************************************************** + * When we copy a trace, we want all the opening actions to happen again : + * the trace will be reopened and totally independant from the original. + * That's why we call ltt_trace_open. + *****************************************************************************/ +LttTrace *ltt_trace_copy(LttTrace *self) { - return tf->name; + return ltt_trace_open(g_quark_to_string(self->pathname)); +} + +void ltt_trace_close(LttTrace *t) +{ + guint i; + LttFacility *fac; + + for(i=0; ifacilities_by_num->len; i++) { + fac = &g_array_index (t->facilities_by_num, LttFacility, i); + if(fac->exists) + ltt_facility_close(fac); + } + + g_datalist_clear(&t->facilities_by_name); + g_array_free(t->facilities_by_num, TRUE); + g_datalist_clear(&t->tracefiles); + g_free(t); } + /***************************************************************************** - * Get the number of blocks in the tracefile + *Get the system description of the trace ****************************************************************************/ -unsigned ltt_tracefile_block_number(LttTracefile *tf) +LttFacility *ltt_trace_facility_by_id(LttTrace *t, guint8 id) +{ + g_assert(id < t->facilities_by_num->len); + return &g_array_index(t->facilities_by_num, LttFacility, id); +} + +/* ltt_trace_facility_get_by_name + * + * Returns the GArray of facility indexes. All the fac_ids that matches the + * requested facility name. + * + * If name is not found, returns NULL. + */ +GArray *ltt_trace_facility_get_by_name(LttTrace *t, GQuark name) { - return tf->block_number; + return g_datalist_id_get_data(&t->facilities_by_name, name); } /***************************************************************************** - *Function name - * ltt_tracefile_seek_time: seek to the first event of the trace with time - * larger or equal to time - *Input params - * t : tracefile - * time : criteria of the time + * Functions to discover all the event types in the trace ****************************************************************************/ -void ltt_tracefile_find_time_block(LttTracefile *t, LttTime time, - int start_block, int end_block) + +#if 0 +unsigned ltt_trace_eventtype_number(LttTrace *t) { - int err, tmp_block, s, e; - int headTime; - int tailTime; + unsigned int i; + unsigned count = 0; + unsigned int num = t->facility_number; + LttFacility * f; - err=readBlock(t,start_block); - if(err) g_error("Can not read tracefile: %s\n", t->name); - if(start_block == end_block)return; + for(i=0;ifacilities, i); + count += f->event_number; + } + return count; +} +#endif //0 - tailTime = ltt_time_compare(t->a_block_end->time, time); - if(tailTime >= 0) return; +#if 0 +//use an iteration on all the trace facilities, and inside iteration on all the +//event types in each facilities instead. +LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned evId) +{ + LttEventType *event_type; - err=readBlock(t,end_block); - if(err) g_error("Can not read tracefile: %s\n", t->name); - if(start_block+1 == end_block)return; + LttFacility * f; + f = ltt_trace_facility_by_id(t,evId); + + if(unlikely(!f)) event_type = NULL; + else event_type = f->events[evId - f->base_id]; + + return event_type; +} +#endif //0 + +#if 0 +/***************************************************************************** + * ltt_trace_find_tracefile + * + * Find a tracefile by name and index in the group. + * + * Returns a pointer to the tracefiles, else NULL. + ****************************************************************************/ + +LttTracefile *ltt_trace_find_tracefile(LttTrace *t, const gchar *name) +{ +} +#endif //0 + +/***************************************************************************** + * Get the start time and end time of the trace + ****************************************************************************/ + +static void ltt_tracefile_time_span_get(LttTracefile *tf, + LttTime *start, LttTime *end) +{ + int err; + + err = map_block(tf, 0); + if(unlikely(err)) { + g_error("Can not map block"); + *start = ltt_time_infinite; + } else + *start = tf->buffer.begin.timestamp; + + err = map_block(tf, tf->num_blocks - 1); /* Last block */ + if(unlikely(err)) { + g_error("Can not map block"); + *end = ltt_time_zero; + } else + *end = tf->buffer.end.timestamp; +} + +struct tracefile_time_span_get_args { + LttTrace *t; + LttTime *start; + LttTime *end; +}; + +static void group_time_span_get(GQuark name, gpointer data, gpointer user_data) +{ + struct tracefile_time_span_get_args *args = + (struct tracefile_time_span_get_args*)user_data; + + GArray *group = (GArray *)data; + int i; + LttTracefile *tf; + LttTime tmp_start; + LttTime tmp_end; + + for(i=0; ilen; i++) { + tf = &g_array_index (group, LttTracefile, i); + if(tf->cpu_online) { + ltt_tracefile_time_span_get(tf, &tmp_start, &tmp_end); + if(ltt_time_compare(*args->start, tmp_start)>0) *args->start = tmp_start; + if(ltt_time_compare(*args->end, tmp_end)<0) *args->end = tmp_end; + } + } +} + +void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end) +{ + LttTime min_start = ltt_time_infinite; + LttTime max_end = ltt_time_zero; + struct tracefile_time_span_get_args args = { t, &min_start, &max_end }; + + g_datalist_foreach(&t->tracefiles, &group_time_span_get, &args); - headTime = ltt_time_compare(t->a_block_start->time, time); - if(headTime <= 0 ) return; + if(start != NULL) *start = min_start; + if(end != NULL) *end = max_end; - tmp_block = (end_block + start_block)/2; - err=readBlock(t,tmp_block); - if(err) g_error("Can not read tracefile: %s\n", t->name); +} - headTime = ltt_time_compare(t->a_block_start->time, time); - tailTime = ltt_time_compare(t->a_block_end->time, time); - if(headTime <= 0 && tailTime >= 0) return; - - if(headTime > 0){ - s = start_block + 1; - e = tmp_block - 1; - if(s <= e) - ltt_tracefile_find_time_block(t, time, s, e); - else return; - } - if(tailTime < 0){ - s = tmp_block + 1; - e = end_block - 1; - if(s <= e) - ltt_tracefile_find_time_block(t, time, s, e); - else return; - } -} - -void ltt_tracefile_backward_find_time_block(LttTracefile *t, LttTime time) -{ - int t_time, h_time, err; - err=readBlock(t,t->which_block-1); - if(err) g_error("Can not read tracefile: %s\n", t->name); - h_time = ltt_time_compare(t->a_block_start->time, time); - t_time = ltt_time_compare(t->a_block_end->time, time); - if(h_time == 0){ - int tmp; - if(t->which_block == 1) return; - err=readBlock(t,t->which_block-1); - if(err) g_error("Can not read tracefile: %s\n", t->name); - tmp = ltt_time_compare(t->a_block_end->time, time); - if(tmp == 0) return ltt_tracefile_seek_time(t, time); - err=readBlock(t,t->which_block+1); - if(err) g_error("Can not read tracefile: %s\n", t->name); - }else if(h_time > 0){ - ltt_tracefile_find_time_block(t, time, 1, t->which_block); - return ltt_tracefile_seek_time(t, time) ; - }else{ - if(t_time >= 0) return ltt_tracefile_seek_time(t, time); - err=readBlock(t,t->which_block+1); - if(err) g_error("Can not read tracefile: %s\n", t->name); - } +/***************************************************************************** + *Get the name of a tracefile + ****************************************************************************/ + +GQuark ltt_tracefile_name(const LttTracefile *tf) +{ + return tf->name; +} + +GQuark ltt_tracefile_long_name(const LttTracefile *tf) +{ + return tf->long_name; +} + + + +guint ltt_tracefile_num(LttTracefile *tf) +{ + return tf->cpu_num; +} + +/***************************************************************************** + * Get the number of blocks in the tracefile + ****************************************************************************/ + +guint ltt_tracefile_block_number(LttTracefile *tf) +{ + return tf->num_blocks; } -void ltt_tracefile_seek_time(LttTracefile *t, LttTime time) + +/* Seek to the first event in a tracefile that has a time equal or greater than + * the time passed in parameter. + * + * If the time parameter is outside the tracefile time span, seek to the first + * event or if after, return ERANGE. + * + * If the time parameter is before the first event, we have to seek specially to + * there. + * + * If the time is after the end of the trace, return ERANGE. + * + * Do a binary search to find the right block, then a sequential search in the + * block to find the event. + * + * In the special case where the time requested fits inside a block that has no + * event corresponding to the requested time, the first event of the next block + * will be seeked. + * + * IMPORTANT NOTE : // FIXME everywhere... + * + * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time : + * you will jump over an event if you do. + * + * Return value : 0 : no error, the tf->event can be used + * ERANGE : time if after the last event of the trace + * otherwise : this is an error. + * + * */ + +int ltt_tracefile_seek_time(LttTracefile *tf, LttTime time) { + int ret = 0; int err; - LttTime lttTime; - int headTime = ltt_time_compare(t->a_block_start->time, time); - int tailTime = ltt_time_compare(t->a_block_end->time, time); - LttEvent ev; + unsigned int block_num, high, low; - if(headTime < 0 && tailTime > 0){ - if(ltt_time_compare(t->a_block_end->time, t->current_event_time) !=0) { - lttTime = getEventTime(t); - err = ltt_time_compare(lttTime, time); - if(err > 0){ - if(t->which_event==2 || ltt_time_compare(t->prev_event_time,time)<0){ - return; - }else{ - updateTracefile(t); - return ltt_tracefile_seek_time(t, time); - } - }else if(err < 0){ - while(1){ - if(ltt_tracefile_read(t,&ev) == NULL) { - g_print("End of file\n"); - return; - } - lttTime = getEventTime(t); - err = ltt_time_compare(lttTime, time); - if(err >= 0)return; - } - }else return; - }else{//we are at the end of the block - updateTracefile(t); - return ltt_tracefile_seek_time(t, time); + /* seek at the beginning of trace */ + err = map_block(tf, 0); /* First block */ + if(unlikely(err)) { + g_error("Can not map block"); + goto fail; + } + + /* If the time is lower or equal the beginning of the trace, + * go to the first event. */ + if(ltt_time_compare(time, tf->buffer.begin.timestamp) <= 0) { + ret = ltt_tracefile_read(tf); + if(ret == ERANGE) goto range; + else if (ret) goto fail; + goto found; /* There is either no event in the trace or the event points + to the first event in the trace */ + } + + err = map_block(tf, tf->num_blocks - 1); /* Last block */ + if(unlikely(err)) { + g_error("Can not map block"); + goto fail; + } + + /* If the time is after the end of the trace, return ERANGE. */ + if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { + goto range; + } + + /* Binary search the block */ + high = tf->num_blocks - 1; + low = 0; + + while(1) { + block_num = ((high-low) / 2) + low; + + err = map_block(tf, block_num); + if(unlikely(err)) { + g_error("Can not map block"); + goto fail; } - }else if(headTime >= 0){ - if(t->which_block == 1){ - updateTracefile(t); - }else{ - if(ltt_time_compare(t->prev_block_end_time, time) >= 0 || - (t->prev_block_end_time.tv_sec == 0 && - t->prev_block_end_time.tv_nsec == 0 )){ - ltt_tracefile_backward_find_time_block(t, time); - }else{ - updateTracefile(t); + if(high == low) { + /* We cannot divide anymore : this is what would happen if the time + * requested was exactly between two consecutive buffers'end and start + * timestamps. This is also what would happend if we didn't deal with out + * of span cases prior in this function. */ + /* The event is right in the buffer! + * (or in the next buffer first event) */ + while(1) { + ret = ltt_tracefile_read(tf); + if(ret == ERANGE) goto range; /* ERANGE or EPERM */ + else if(ret) goto fail; + + if(ltt_time_compare(time, tf->event.event_time) <= 0) + goto found; + } + + } else if(ltt_time_compare(time, tf->buffer.begin.timestamp) < 0) { + /* go to lower part */ + high = block_num - 1; + } else if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { + /* go to higher part */ + low = block_num + 1; + } else {/* The event is right in the buffer! + (or in the next buffer first event) */ + while(1) { + ret = ltt_tracefile_read(tf); + if(ret == ERANGE) goto range; /* ERANGE or EPERM */ + else if(ret) goto fail; + + if(ltt_time_compare(time, tf->event.event_time) <= 0) + break; } + goto found; } - }else if(tailTime < 0){ - if(t->which_block != t->block_number){ - ltt_tracefile_find_time_block(t, time, t->which_block+1, t->block_number); - return ltt_tracefile_seek_time(t, time); - }else { - t->cur_event_pos = t->buffer + t->block_size; - g_print("End of file\n"); - return; - } - }else if(tailTime == 0){ - t->cur_event_pos = t->last_event_pos; - t->current_event_time = time; - t->cur_heart_beat_number = 0; - t->prev_event_time.tv_sec = 0; - t->prev_event_time.tv_nsec = 0; - return; } + +found: + return 0; +range: + return ERANGE; + + /* Error handling */ +fail: + g_error("ltt_tracefile_seek_time failed on tracefile %s", + g_quark_to_string(tf->name)); + return EPERM; } -/***************************************************************************** - * Seek to the first event with position equal or larger to ep - * - * Modified by Mathieu Desnoyers to used faster offset position instead of - * re-reading the whole buffer. - ****************************************************************************/ -void ltt_tracefile_seek_position(LttTracefile *t, const LttEventPosition *ep) -{ - //if we are at the right place, just return - if(likely(t->which_block == ep->block_num && t->which_event == ep->event_num)) - return; +int ltt_tracefile_seek_position(LttTracefile *tf, const LttEventPosition *ep) { - if(likely(t->which_block == ep->block_num)) updateTracefile(t); - else readBlock(t,ep->block_num); - //event offset is available - if(likely(ep->old_position)){ - int err; - - t->which_event = ep->event_num; - t->cur_event_pos = t->buffer + ep->event_offset; - t->prev_event_time = ep->event_time; - t->current_event_time = ep->event_time; - t->cur_heart_beat_number = ep->heart_beat_number; - t->cur_cycle_count = ep->event_cycle_count; - - /* This is a workaround for fast position seek */ - t->last_event_pos = ep->last_event_pos; - t->prev_block_end_time = ep->prev_block_end_time; - t->prev_event_time = ep->prev_event_time; - t->pre_cycle_count = ep->pre_cycle_count; - t->count = ep->count; - t->overflow_nsec = ep->overflow_nsec; - t->last_heartbeat = ep->last_heartbeat; - /* end of workaround */ - - //update the fields of the current event and go to the next event - err = skipEvent(t); - if(unlikely(err == ERANGE)) g_error("event id is out of range\n"); - - return; + int err; + + if(ep->tracefile != tf) { + goto fail; } - //only block number and event index are available - //MD: warning : this is slow! - g_warning("using slow O(n) tracefile seek position"); + err = map_block(tf, ep->block); + if(unlikely(err)) { + g_error("Can not map block"); + goto fail; + } - LttEvent event; - while(likely(t->which_event < ep->event_num)) ltt_tracefile_read(t, &event); + tf->event.offset = ep->offset; - return; + err = ltt_tracefile_read_update_event(tf); + if(err) goto fail; + err = ltt_tracefile_read_op(tf); + if(err) goto fail; + + return 0; + +fail: + g_error("ltt_tracefile_seek_time failed on tracefile %s", + g_quark_to_string(tf->name)); + return 1; +} + +/* Calculate the real event time based on the buffer boundaries */ +LttTime ltt_interpolate_time(LttTracefile *tf, LttEvent *event) +{ + LttTime time; + + g_assert(tf->trace->has_tsc); + +// time = ltt_time_from_uint64( +// cycles_2_ns(tf, (guint64)(tf->buffer.tsc - tf->buffer.begin.cycle_count))); + time = ltt_time_from_uint64((tf->buffer.tsc - tf->trace->start_tsc) * 1000000 + / (double)tf->trace->start_freq); + //time = ltt_time_add(tf->buffer.begin.timestamp, time); + time = ltt_time_add(tf->trace->start_time, time); + + return time; } + +/* Get the current event of the tracefile : valid until the next read */ +LttEvent *ltt_tracefile_get_event(LttTracefile *tf) +{ + return &tf->event; +} + + + /***************************************************************************** *Function name - * ltt_tracefile_read : read the current event, set the pointer to the next + * ltt_tracefile_read : Read the next event in the tracefile *Input params * t : tracefile *Return value - * LttEvent * : an event to be processed + * + * Returns 0 if an event can be used in tf->event. + * Returns ERANGE on end of trace. The event in tf->event still can be used + * (if the last block was not empty). + * Returns EPERM on error. + * + * This function does make the tracefile event structure point to the event + * currently pointed to by the tf->event. + * + * Note : you must call a ltt_tracefile_seek to the beginning of the trace to + * reinitialize it after an error if you want results to be coherent. + * It would be the case if a end of trace last buffer has no event : the end + * of trace wouldn't be returned, but an error. + * We make the assumption there is at least one event per buffer. ****************************************************************************/ -LttEvent *ltt_tracefile_read(LttTracefile *t, LttEvent *event) +int ltt_tracefile_read(LttTracefile *tf) +{ + int err; + + err = ltt_tracefile_read_seek(tf); + if(err) return err; + err = ltt_tracefile_read_update_event(tf); + if(err) return err; + err = ltt_tracefile_read_op(tf); + if(err) return err; + + return 0; +} + +int ltt_tracefile_read_seek(LttTracefile *tf) { int err; - if(unlikely(t->cur_event_pos == t->buffer + t->block_size)){ - if(unlikely(t->which_block == t->block_number)){ - return NULL; + /* Get next buffer until we finally have an event, or end of trace */ + while(1) { + err = ltt_seek_next_event(tf); + if(unlikely(err == ENOPROTOOPT)) { + return EPERM; } - err = readBlock(t, t->which_block + 1); - if(unlikely(err))g_error("Can not read tracefile"); - } - event->event_id = (int)(*(guint16 *)(t->cur_event_pos)); - if(unlikely(event->event_id == TRACE_TIME_HEARTBEAT)) - t->cur_heart_beat_number++; - - t->prev_event_time = t->current_event_time; - // t->current_event_time = getEventTime(t); - - event->time_delta = *(guint32 *)(t->cur_event_pos + EVENT_ID_SIZE); - event->event_time = t->current_event_time; - event->event_cycle_count = t->cur_cycle_count; - - event->tracefile = t; - event->data = t->cur_event_pos + EVENT_HEADER_SIZE; - event->which_block = t->which_block; - event->which_event = t->which_event; - - /* This is a workaround for fast position seek */ - event->last_event_pos = t->last_event_pos; - event->prev_block_end_time = t->prev_block_end_time; - event->prev_event_time = t->prev_event_time; - event->pre_cycle_count = t->pre_cycle_count; - event->count = t->count; - event->overflow_nsec = t->overflow_nsec; - event->last_heartbeat = t->last_heartbeat; + /* Are we at the end of the buffer ? */ + if(err == ERANGE) { + if(unlikely(tf->buffer.index == tf->num_blocks-1)){ /* end of trace ? */ + return ERANGE; + } else { + /* get next block */ + err = map_block(tf, tf->buffer.index + 1); + if(unlikely(err)) { + g_error("Can not map block"); + return EPERM; + } + } + } else break; /* We found an event ! */ + } - /* end of workaround */ + return 0; +} +/* do specific operation on events */ +int ltt_tracefile_read_op(LttTracefile *tf) +{ + LttEvent *event; + + event = &tf->event; - //update the fields of the current event and go to the next event - err = skipEvent(t); - if(unlikely(err == ERANGE)) g_error("event id is out of range\n"); + /* do event specific operation */ - return event; + /* do something if its an heartbeat event : increment the heartbeat count */ + //if(event->facility_id == LTT_FACILITY_CORE) + // if(event->event_id == LTT_EVENT_HEARTBEAT) + // tf->cur_heart_beat_number++; + + return 0; } -/**************************************************************************** - *Function name - * readFile : wrap function to read from a file - *Input Params - * fd : file descriptor - * buf : buf to contain the content - * size : number of bytes to be read - * mesg : message to be printed if some thing goes wrong - *return value - * 0 : success - * EIO : can not read from the file - ****************************************************************************/ -int readFile(int fd, void * buf, size_t size, char * mesg) +/* same as ltt_tracefile_read, but does not seek to the next event nor call + * event specific operation. */ +int ltt_tracefile_read_update_event(LttTracefile *tf) { - ssize_t nbBytes = read(fd, buf, size); + void * pos; + LttEvent *event; + + event = &tf->event; + pos = tf->buffer.head + event->offset; - if((size_t)nbBytes != size) { - if(nbBytes < 0) { - perror("Error in readFile : "); - } else { - g_warning("%s",mesg); - } - return EIO; - } - return 0; + /* Read event header */ + + //TODO align + + if(tf->trace->has_tsc) { + if(tf->trace->has_heartbeat) { + event->time.timestamp = ltt_get_uint32(LTT_GET_BO(tf), + pos); + /* 32 bits -> 64 bits tsc */ + /* note : still works for seek and non seek cases. */ + if(event->time.timestamp < (0xFFFFFFFFULL&tf->buffer.tsc)) { + tf->buffer.tsc = ((tf->buffer.tsc&0xFFFFFFFF00000000ULL) + + 0x100000000ULL) + | (guint64)event->time.timestamp; + event->tsc = tf->buffer.tsc; + } else { + /* no overflow */ + tf->buffer.tsc = (tf->buffer.tsc&0xFFFFFFFF00000000ULL) + | (guint64)event->time.timestamp; + event->tsc = tf->buffer.tsc; + } + pos += sizeof(guint32); + } else { + event->tsc = ltt_get_uint64(LTT_GET_BO(tf), pos); + tf->buffer.tsc = event->tsc; + pos += sizeof(guint64); + } + + event->event_time = ltt_interpolate_time(tf, event); + } else { + event->time.delta.tv_sec = 0; + event->time.delta.tv_nsec = ltt_get_uint32(LTT_GET_BO(tf), + pos) * NSEC_PER_USEC; + tf->buffer.tsc = 0; + event->tsc = tf->buffer.tsc; + + event->event_time = ltt_time_add(tf->buffer.begin.timestamp, + event->time.delta); + pos += sizeof(guint32); + } + + event->facility_id = *(guint8*)pos; + pos += sizeof(guint8); + + event->event_id = *(guint8*)pos; + pos += sizeof(guint8); + + event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos); + pos += sizeof(guint16); + + event->data = pos; + + /* get the data size and update the event fields with the current + * information */ + ltt_update_event_size(tf); + + return 0; } /**************************************************************************** *Function name - * readBlock : read a block from the file + * map_block : map a block from the file *Input Params * lttdes : ltt trace file * whichBlock : the block which will be read @@ -1155,252 +1715,600 @@ int readFile(int fd, void * buf, size_t size, char * mesg) * EIO : can not read from the file ****************************************************************************/ -int readBlock(LttTracefile * tf, int whichBlock) +static gint map_block(LttTracefile * tf, guint block_num) { - off_t nbBytes; - guint32 lostSize; + int page_size = getpagesize(); + struct ltt_block_start_header *header; - /* same block already opened requested */ - if((guint)whichBlock == tf->which_block) return 0; - - if(likely(whichBlock - tf->which_block == 1 && tf->which_block != 0)){ - tf->prev_block_end_time = tf->a_block_end->time; - tf->prev_event_time = tf->a_block_end->time; - }else{ - tf->prev_block_end_time.tv_sec = 0; - tf->prev_block_end_time.tv_nsec = 0; - tf->prev_event_time.tv_sec = 0; - tf->prev_event_time.tv_nsec = 0; - } + g_assert(block_num < tf->num_blocks); - nbBytes=lseek(tf->fd,(off_t)((whichBlock-1)*tf->block_size), SEEK_SET); - if(unlikely(nbBytes == -1)) return EINVAL; + if(tf->buffer.head != NULL) { + if(munmap(tf->buffer.head, PAGE_ALIGN(tf->buf_size))) { + g_warning("unmap size : %u\n", + PAGE_ALIGN(tf->buf_size)); + perror("munmap error"); + g_assert(0); + } + } + - if(unlikely(readFile(tf->fd,tf->buffer,tf->block_size,"Unable to read a block"))) - return EIO; - - tf->a_block_start=(BlockStart *) (tf->buffer + EVENT_HEADER_SIZE); - lostSize = *(guint32 *)(tf->buffer + tf->block_size - sizeof(guint32)); - tf->a_block_end=(BlockEnd *)(tf->buffer + tf->block_size - - sizeof(guint32) - lostSize - sizeof(BlockEnd)); - tf->last_event_pos = tf->buffer + tf->block_size - - sizeof(guint32) - lostSize - - sizeof(BlockEnd) - EVENT_HEADER_SIZE; - - tf->which_block = whichBlock; - tf->which_event = 1; - tf->cur_event_pos = tf->buffer;//the beginning of the block, block start ev - tf->cur_heart_beat_number = 0; - tf->last_heartbeat = NULL; + /* Multiple of pages aligned head */ + tf->buffer.head = mmap(0, + PAGE_ALIGN(tf->buf_size), + PROT_READ, MAP_PRIVATE, tf->fd, + PAGE_ALIGN((off_t)tf->buf_size * (off_t)block_num)); + + if(tf->buffer.head == MAP_FAILED) { + perror("Error in allocating memory for buffer of tracefile"); + g_assert(0); + goto map_error; + } + g_assert( ( (guint)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. - /* read the whole block to precalculate total of cycles in it */ - tf->count = 0; - tf->pre_cycle_count = 0; - tf->cur_cycle_count = 0; - getCyclePerNsec(tf); + tf->buffer.index = block_num; - tf->overflow_nsec = - (-((double)(tf->a_block_start->cycle_count&0xFFFFFFFF)) - * tf->nsec_per_cycle); + header = (struct ltt_block_start_header*)tf->buffer.head; - tf->current_event_time = getEventTime(tf); +#if 0 + tf->buffer.begin.timestamp = ltt_time_add( + ltt_time_from_uint64( + ltt_get_uint64(LTT_GET_BO(tf), + &header->begin.timestamp) + - tf->trace->start_monotonic), + tf->trace->start_time); +#endif //0 + //g_debug("block %u begin : %lu.%lu", block_num, + // tf->buffer.begin.timestamp.tv_sec, tf->buffer.begin.timestamp.tv_nsec); + tf->buffer.begin.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), + &header->begin.cycle_count); + tf->buffer.begin.freq = ltt_get_uint64(LTT_GET_BO(tf), + &header->begin.freq); + tf->buffer.begin.timestamp = ltt_time_add( + ltt_time_from_uint64( + (tf->buffer.begin.cycle_count + - tf->trace->start_tsc) * 1000000 + / (double)tf->trace->start_freq), + tf->trace->start_time); +#if 0 - return 0; -} + tf->buffer.end.timestamp = ltt_time_add( + ltt_time_from_uint64( + ltt_get_uint64(LTT_GET_BO(tf), + &header->end.timestamp) + - tf->trace->start_monotonic), + tf->trace->start_time); +#endif //0 + //g_debug("block %u end : %lu.%lu", block_num, + // tf->buffer.end.timestamp.tv_sec, tf->buffer.end.timestamp.tv_nsec); + tf->buffer.end.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), + &header->end.cycle_count); + tf->buffer.end.freq = ltt_get_uint64(LTT_GET_BO(tf), + &header->end.freq); + tf->buffer.lost_size = ltt_get_uint32(LTT_GET_BO(tf), + &header->lost_size); + tf->buffer.end.timestamp = ltt_time_add( + ltt_time_from_uint64( + (tf->buffer.end.cycle_count + - tf->trace->start_tsc) * 1000000 + / (double)tf->trace->start_freq), + tf->trace->start_time); + + tf->buffer.tsc = tf->buffer.begin.cycle_count; + tf->event.tsc = tf->buffer.tsc; + tf->buffer.freq = tf->buffer.begin.freq; + + /* FIXME + * eventually support variable buffer size : will need a partial pre-read of + * the headers to create an index when we open the trace... eventually. */ + g_assert(tf->buf_size == ltt_get_uint32(LTT_GET_BO(tf), + &header->buf_size)); + + /* Now that the buffer is mapped, calculate the time interpolation for the + * block. */ + +// tf->buffer.nsecs_per_cycle = calc_nsecs_per_cycle(tf); + //tf->buffer.cyc2ns_scale = calc_nsecs_per_cycle(tf); + + /* Make the current event point to the beginning of the buffer : + * it means that the event read must get the first event. */ + tf->event.tracefile = tf; + tf->event.block = block_num; + tf->event.offset = 0; + + return 0; -/***************************************************************************** - *Function name - * updateTracefile : reinitialize the info of the block which is already - * in the buffer - *Input params - * tf : tracefile - ****************************************************************************/ +map_error: + return -errno; + +} -void updateTracefile(LttTracefile * tf) +/* It will update the fields offsets too */ +void ltt_update_event_size(LttTracefile *tf) { - tf->which_event = 1; - tf->cur_event_pos = tf->buffer; - tf->current_event_time = getEventTime(tf); - tf->cur_heart_beat_number = 0; + ssize_t size = 0; + + /* Specific handling of core events : necessary to read the facility control + * tracefile. */ + LttFacility *f = ltt_trace_get_facility_by_num(tf->trace, + tf->event.facility_id); + + if(likely(tf->event.facility_id == LTT_FACILITY_CORE)) { + switch((enum ltt_core_events)tf->event.event_id) { + case LTT_EVENT_FACILITY_LOAD: + size = strlen((char*)tf->event.data) + 1; + //g_debug("Update Event facility load of facility %s", (char*)tf->event.data); + size += sizeof(struct LttFacilityLoad); + break; + case LTT_EVENT_FACILITY_UNLOAD: + //g_debug("Update Event facility unload"); + size = sizeof(struct LttFacilityUnload); + break; + case LTT_EVENT_STATE_DUMP_FACILITY_LOAD: + size = strlen((char*)tf->event.data) + 1; + //g_debug("Update Event facility load state dump of facility %s", + // (char*)tf->event.data); + size += sizeof(struct LttStateDumpFacilityLoad); + break; + case LTT_EVENT_HEARTBEAT: + //g_debug("Update Event heartbeat"); + size = sizeof(TimeHeartbeat); + break; + default: + g_warning("Error in getting event size : tracefile %s, " + "unknown event id %hhu in core facility.", + g_quark_to_string(tf->name), + tf->event.event_id); + goto event_id_error; + + } + } else { + if(!f->exists) { + g_error("Unknown facility %hhu (0x%hhx) in tracefile %s", + tf->event.facility_id, + tf->event.facility_id, + g_quark_to_string(tf->name)); + goto facility_error; + } + + LttEventType *event_type = + ltt_facility_eventtype_get(f, tf->event.event_id); - tf->prev_event_time.tv_sec = 0; - tf->prev_event_time.tv_nsec = 0; - tf->count = 0; + if(!event_type) { + g_error("Unknown event id %hhu in facility %s in tracefile %s", + tf->event.event_id, + g_quark_to_string(f->name), + g_quark_to_string(tf->name)); + goto event_type_error; + } + + if(event_type->root_field) + size = get_field_type_size(tf, event_type, + 0, 0, event_type->root_field, tf->event.data); + else + size = 0; + + //g_debug("Event root field : f.e %hhu.%hhu size %zd", + // tf->event.facility_id, + // tf->event.event_id, size); + } + + tf->event.data_size = size; + + /* Check consistency between kernel and LTTV structure sizes */ + g_assert(tf->event.data_size == tf->event.event_size); - tf->overflow_nsec = (-((double)tf->a_block_start->cycle_count) - * tf->nsec_per_cycle); + return; +facility_error: +event_type_error: +event_id_error: + tf->event.data_size = 0; } -/***************************************************************************** - *Function name - * skipEvent : go to the next event, update the fields of the current event - *Input params - * t : tracefile - *return value - * 0 : success - * ERANGE : event id is out of range - ****************************************************************************/ -int skipEvent(LttTracefile * t) +/* Take the tf current event offset and use the event facility id and event id + * to figure out where is the next event offset. + * + * This is an internal function not aiming at being used elsewhere : it will + * not jump over the current block limits. Please consider using + * ltt_tracefile_read to do this. + * + * Returns 0 on success + * ERANGE if we are at the end of the buffer. + * ENOPROTOOPT if an error occured when getting the current event size. + */ +static int ltt_seek_next_event(LttTracefile *tf) { - int evId; - void * evData; - LttEventType * evT; - LttField * rootFld; + int ret = 0; + void *pos; + + /* seek over the buffer header if we are at the buffer start */ + if(tf->event.offset == 0) { + tf->event.offset += tf->buffer_header_size; - evId = (int)(*(guint16 *)(t->cur_event_pos)); - evData = t->cur_event_pos + EVENT_HEADER_SIZE; + if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) { + ret = ERANGE; + } + goto found; + } - evT = ltt_trace_eventtype_get(t->trace,(unsigned)evId); - - if(likely(evT)) rootFld = evT->root_field; - else return ERANGE; - if(likely(rootFld)){ - //event has string/sequence or the last event is not the same event - if(likely((evT->latest_block!=t->which_block || evT->latest_event!=t->which_event) - && rootFld->field_fixed == 0)){ - setFieldsOffset(t, evT, evData, t->trace); - } - t->cur_event_pos += EVENT_HEADER_SIZE + rootFld->field_size; - }else t->cur_event_pos += EVENT_HEADER_SIZE; - - evT->latest_block = t->which_block; - evT->latest_event = t->which_event; - - //the next event is in the next block - if(unlikely(evId == TRACE_BLOCK_END)){ - t->cur_event_pos = t->buffer + t->block_size; - }else{ - t->which_event++; - t->current_event_time = getEventTime(t); + pos = tf->event.data; + + if(tf->event.data_size < 0) goto error; + + pos += (size_t)tf->event.data_size; + + tf->event.offset = pos - tf->buffer.head; + + if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) { + ret = ERANGE; + goto found; } + g_assert(tf->event.offset < tf->buf_size - tf->buffer.lost_size); - return 0; -} +found: + return ret; +error: + g_error("Error in ltt_seek_next_event for tracefile %s", + g_quark_to_string(tf->name)); + return ENOPROTOOPT; +} +#if 0 /***************************************************************************** *Function name - * getCyclePerNsec : calculate cycles per nsec for current block - * MD: should have tracefile_read the whole block, so we know the - * total of cycles in it before being called. + * calc_nsecs_per_cycle : calculate nsecs per cycle for current block + * + * 1.0 / (freq(khz) *1000) * 1000000000 *Input Params * t : tracefile ****************************************************************************/ +/* from timer_tsc.c */ +#define CYC2NS_SCALE_FACTOR 10 +static guint32 calc_nsecs_per_cycle(LttTracefile * tf) +{ + //return 1e6 / (double)tf->buffer.freq; + guint32 cpu_mhz = tf->buffer.freq / 1000; + guint32 cyc2ns_scale = (1000 << CYC2NS_SCALE_FACTOR)/cpu_mhz; + + return cyc2ns_scale; + // return 1e6 / (double)tf->buffer.freq; +} -void getCyclePerNsec(LttTracefile * t) +static guint64 cycles_2_ns(LttTracefile *tf, guint64 cycles) { - LttTime lBufTotalTime; /* Total time for this buffer */ - double lBufTotalNSec; /* Total time for this buffer in nsecs */ - LttCycleCount lBufTotalCycle;/* Total cycles for this buffer */ + return (cycles * tf->buffer.cyc2ns_scale) >> CYC2NS_SCALE_FACTOR; +} +#endif //0 + +#if 0 +void setFieldsOffset(LttTracefile *tf, LttEventType *evT,void *evD) +{ + LttField * rootFld = evT->root_field; + // rootFld->base_address = evD; - /* Calculate the total time for this buffer */ - lBufTotalTime = ltt_time_sub(t->a_block_end->time, t->a_block_start->time); + if(likely(rootFld)) + rootFld->field_size = getFieldtypeSize(tf, evT->facility, + evT, 0,0,rootFld, evD); +} +#endif //0 - /* Calculate the total cycles for this bufffer */ - lBufTotalCycle = t->a_block_end->cycle_count; - lBufTotalCycle -= t->a_block_start->cycle_count; +/***************************************************************************** + *Function name + * set_fields_offsets : set the precomputable offset of the fields + *Input params + * tracefile : opened trace file + * event_type : the event type + ****************************************************************************/ - /* Convert the total time to double */ - lBufTotalNSec = ltt_time_to_double(lBufTotalTime); - - t->nsec_per_cycle = (double)lBufTotalNSec / (double)lBufTotalCycle; +void set_fields_offsets(LttTracefile *tf, LttEventType *event_type) +{ + LttField *field = event_type->root_field; + enum field_status fixed_root = FIELD_FIXED, fixed_parent = FIELD_FIXED; - /* Pre-multiply one overflow (2^32 cycles) by nsec_per_cycle */ - t->one_overflow_nsec = t->nsec_per_cycle * (double)0x100000000ULL; + if(likely(field)) + preset_field_type_size(tf, event_type, 0, 0, + &fixed_root, &fixed_parent, + field); } -/**************************************************************************** + +/***************************************************************************** *Function name - * getEventTime : obtain the time of an event - * NOTE : this function _really_ is on critical path. + * preset_field_type_size : set the fixed sizes of the field type *Input params * tf : tracefile - *Return value - * LttTime : the time of the event + * event_type : event type + * offset_root : offset from the root + * offset_parent : offset from the parent + * fixed_root : Do we know a fixed offset to the root ? + * fixed_parent : Do we know a fixed offset to the parent ? + * field : field ****************************************************************************/ - -static inline LttTime getEventTime(LttTracefile * tf) +void preset_field_type_size(LttTracefile *tf, LttEventType *event_type, + off_t offset_root, off_t offset_parent, + enum field_status *fixed_root, enum field_status *fixed_parent, + LttField *field) { - LttTime time; - LttCycleCount cycle_count; // cycle count for the current event - //LttCycleCount lEventTotalCycle; // Total cycles from start for event - gint64 lEventNSec; // Total nsecs from start for event - LttTime lTimeOffset; // Time offset in struct LttTime - guint16 evId; - - evId = *(guint16 *)tf->cur_event_pos; + enum field_status local_fixed_root, local_fixed_parent; + guint i; + LttType *type; - cycle_count = (LttCycleCount)*(guint32 *)(tf->cur_event_pos + EVENT_ID_SIZE); + g_assert(field->fixed_root == FIELD_UNKNOWN); + g_assert(field->fixed_parent == FIELD_UNKNOWN); + g_assert(field->fixed_size == FIELD_UNKNOWN); - gboolean comp_count = cycle_count < tf->pre_cycle_count; + type = field->field_type; - tf->pre_cycle_count = cycle_count; - - if(unlikely(comp_count)) { - /* Overflow */ - tf->overflow_nsec += tf->one_overflow_nsec; - tf->count++; //increment overflow count - } + field->fixed_root = *fixed_root; + if(field->fixed_root == FIELD_FIXED) + field->offset_root = offset_root; + else + field->offset_root = 0; - if(unlikely(evId == TRACE_BLOCK_START)) { - lEventNSec = 0; - } else if(unlikely(evId == TRACE_BLOCK_END)) { - lEventNSec = ((double) - (tf->a_block_end->cycle_count - tf->a_block_start->cycle_count) - * tf->nsec_per_cycle); - } -#if 0 - /* If you want to make heart beat a special case and use their own 64 bits - * TSC, activate this. - */ - else if(unlikely(evId == TRACE_TIME_HEARTBEAT)) { - - tf->last_heartbeat = (TimeHeartbeat*)(tf->cur_event_pos+EVENT_HEADER_SIZE); - lEventNSec = ((double)(tf->last_heartbeat->cycle_count - - tf->a_block_start->cycle_count) - * tf->nsec_per_cycle); - } -#endif //0 - else { - lEventNSec = (gint64)((double)cycle_count * tf->nsec_per_cycle) - +tf->overflow_nsec; + field->fixed_parent = *fixed_parent; + if(field->fixed_parent == FIELD_FIXED) + field->offset_parent = offset_parent; + else + field->offset_parent = 0; + + size_t current_root_offset; + size_t current_offset; + enum field_status current_child_status, final_child_status; + size_t max_size; + + switch(type->type_class) { + case LTT_INT: + case LTT_UINT: + case LTT_FLOAT: + case LTT_ENUM: + field->field_size = ltt_type_size(tf->trace, type); + field->fixed_size = FIELD_FIXED; + break; + case LTT_POINTER: + field->field_size = (off_t)event_type->facility->pointer_size; + field->fixed_size = FIELD_FIXED; + break; + case LTT_LONG: + case LTT_ULONG: + field->field_size = (off_t)event_type->facility->long_size; + field->fixed_size = FIELD_FIXED; + break; + case LTT_SIZE_T: + case LTT_SSIZE_T: + case LTT_OFF_T: + field->field_size = (off_t)event_type->facility->size_t_size; + field->fixed_size = FIELD_FIXED; + break; + case LTT_SEQUENCE: + local_fixed_root = FIELD_VARIABLE; + local_fixed_parent = FIELD_VARIABLE; + preset_field_type_size(tf, event_type, + 0, 0, + &local_fixed_root, &local_fixed_parent, + field->child[0]); + field->fixed_size = FIELD_VARIABLE; + field->field_size = 0; + *fixed_root = FIELD_VARIABLE; + *fixed_parent = FIELD_VARIABLE; + break; + case LTT_STRING: + field->fixed_size = FIELD_VARIABLE; + field->field_size = 0; + *fixed_root = FIELD_VARIABLE; + *fixed_parent = FIELD_VARIABLE; + break; + case LTT_ARRAY: + local_fixed_root = FIELD_VARIABLE; + local_fixed_parent = FIELD_VARIABLE; + preset_field_type_size(tf, event_type, + 0, 0, + &local_fixed_root, &local_fixed_parent, + field->child[0]); + field->fixed_size = field->child[0]->fixed_size; + if(field->fixed_size == FIELD_FIXED) { + field->field_size = type->element_number * field->child[0]->field_size; + } else { + field->field_size = 0; + *fixed_root = FIELD_VARIABLE; + *fixed_parent = FIELD_VARIABLE; + } + break; + case LTT_STRUCT: + current_root_offset = field->offset_root; + current_offset = 0; + current_child_status = FIELD_FIXED; + for(i=0;ielement_number;i++) { + preset_field_type_size(tf, event_type, + current_root_offset, current_offset, + fixed_root, ¤t_child_status, + field->child[i]); + if(current_child_status == FIELD_FIXED) { + current_root_offset += field->child[i]->field_size; + current_offset += field->child[i]->field_size; + } else { + current_root_offset = 0; + current_offset = 0; + } + } + if(current_child_status != FIELD_FIXED) { + *fixed_parent = current_child_status; + field->field_size = 0; + field->fixed_size = current_child_status; + } else { + field->field_size = current_offset; + field->fixed_size = FIELD_FIXED; + } + break; + case LTT_UNION: + current_root_offset = field->offset_root; + current_offset = 0; + max_size = 0; + final_child_status = FIELD_FIXED; + for(i=0;ielement_number;i++) { + enum field_status current_root_child_status = FIELD_FIXED; + enum field_status current_child_status = FIELD_FIXED; + preset_field_type_size(tf, event_type, + current_root_offset, current_offset, + ¤t_root_child_status, ¤t_child_status, + field->child[i]); + if(current_child_status != FIELD_FIXED) + final_child_status = current_child_status; + else + max_size = max(max_size, field->child[i]->field_size); + } + if(final_child_status != FIELD_FIXED) { + *fixed_root = final_child_status; + *fixed_parent = final_child_status; + field->field_size = 0; + field->fixed_size = current_child_status; + } else { + field->field_size = max_size; + field->fixed_size = FIELD_FIXED; + } + break; } - lTimeOffset = ltt_time_from_uint64(lEventNSec); - - time = ltt_time_add(tf->a_block_start->time, lTimeOffset); - - return time; } + /***************************************************************************** *Function name - * setFieldsOffset : set offset of the fields + * check_fields_compatibility : Check for compatibility between two fields : + * do they use the same inner structure ? *Input params - * tracefile : opened trace file - * evT : the event type - * evD : event data, it may be NULL + * event_type1 : event type + * event_type2 : event type + * field1 : field + * field2 : field + *Returns : 0 if identical + * 1 if not. ****************************************************************************/ - -void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace* t) +gint check_fields_compatibility(LttEventType *event_type1, + LttEventType *event_type2, + LttField *field1, LttField *field2) { - LttField * rootFld = evT->root_field; - // rootFld->base_address = evD; - - if(likely(rootFld)) - rootFld->field_size = getFieldtypeSize(tf, evT, 0,0,rootFld, evD,t); + guint different = 0; + guint i; + LttType *type1; + LttType *type2; + + if(field1 == NULL) { + if(field2 == NULL) goto end; + else { + different = 1; + goto end; + } + } else if(field2 == NULL) { + different = 1; + goto end; + } + + g_assert(field1->fixed_root != FIELD_UNKNOWN); + g_assert(field2->fixed_root != FIELD_UNKNOWN); + g_assert(field1->fixed_parent != FIELD_UNKNOWN); + g_assert(field2->fixed_parent != FIELD_UNKNOWN); + g_assert(field1->fixed_size != FIELD_UNKNOWN); + g_assert(field2->fixed_size != FIELD_UNKNOWN); + + type1 = field1->field_type; + type2 = field2->field_type; + + if(type1->type_class != type2->type_class) { + different = 1; + goto end; + } + if(type1->element_name != type2->element_name) { + different = 1; + goto end; + } + + switch(type1->type_class) { + case LTT_INT: + case LTT_UINT: + case LTT_FLOAT: + case LTT_POINTER: + case LTT_LONG: + case LTT_ULONG: + case LTT_SIZE_T: + case LTT_SSIZE_T: + case LTT_OFF_T: + if(field1->field_size != field2->field_size) { + different = 1; + goto end; + } + break; + case LTT_ENUM: + if(type1->element_number != type2->element_number) { + different = 1; + goto end; + } + for(i=0;ielement_number;i++) { + if(type1->enum_strings[i] != type2->enum_strings[i]) { + different = 1; + goto end; + } + } + break; + case LTT_SEQUENCE: + /* Two elements : size and child */ + g_assert(type1->element_number != type2->element_number); + for(i=0;ielement_number;i++) { + if(check_fields_compatibility(event_type1, event_type2, + field1->child[0], field2->child[0])) { + different = 1; + goto end; + } + } + break; + case LTT_STRING: + break; + case LTT_ARRAY: + if(field1->field_size != field2->field_size) { + different = 1; + goto end; + } + /* Two elements : size and child */ + g_assert(type1->element_number != type2->element_number); + for(i=0;ielement_number;i++) { + if(check_fields_compatibility(event_type1, event_type2, + field1->child[0], field2->child[0])) { + different = 1; + goto end; + } + } + break; + case LTT_STRUCT: + case LTT_UNION: + if(type1->element_number != type2->element_number) { + different = 1; + break; + } + for(i=0;ielement_number;i++) { + if(check_fields_compatibility(event_type1, event_type2, + field1->child[0], field2->child[0])) { + different = 1; + goto end; + } + } + break; + } +end: + return different; } + + + +#if 0 /***************************************************************************** *Function name * getFieldtypeSize: get the size of the field type (primitive type) *Input params - * tracefile : opened trace file * evT : event type * offsetRoot : offset from the root * offsetParent : offset from the parrent @@ -1410,151 +2318,146 @@ void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace* t) * int : size of the field ****************************************************************************/ -static inline gint getFieldtypeSize(LttTracefile * t, +static inline gint getFieldtypeSize(LttTracefile *tf, LttEventType * evT, gint offsetRoot, - gint offsetParent, LttField * fld, void *evD, LttTrace *trace) + gint offsetParent, LttField * fld, void *evD) { gint size, size1, element_number, i, offset1, offset2; LttType * type = fld->field_type; - if(unlikely(t && evT->latest_block==t->which_block && - evT->latest_event==t->which_event)){ - size = fld->field_size; - goto end_getFieldtypeSize; - } else { - /* This likely has been tested with gcov : half of them.. */ - if(unlikely(fld->field_fixed == 1)){ - /* tested : none */ - if(unlikely(fld == evT->root_field)) { - size = fld->field_size; - goto end_getFieldtypeSize; - } + /* This likely has been tested with gcov : half of them.. */ + if(unlikely(fld->field_fixed == 1)){ + /* tested : none */ + if(unlikely(fld == evT->root_field)) { + size = fld->field_size; + goto end_getFieldtypeSize; } + } - /* From gcov profiling : half string, half struct, can we gain something - * from that ? (Mathieu) */ - switch(type->type_class) { - case LTT_ARRAY: - element_number = (int) type->element_number; - if(fld->field_fixed == -1){ - size = getFieldtypeSize(t, evT, offsetRoot, - 0,fld->child[0], NULL, trace); - if(size == 0){ //has string or sequence - fld->field_fixed = 0; - }else{ - fld->field_fixed = 1; - size *= element_number; - } - }else if(fld->field_fixed == 0){// has string or sequence - size = 0; - for(i=0;ichild[0], evD+size, trace); - } - }else size = fld->field_size; - if(unlikely(!evD)){ - fld->fixed_root = (offsetRoot==-1) ? 0 : 1; - fld->fixed_parent = (offsetParent==-1) ? 0 : 1; - } - - break; - - case LTT_SEQUENCE: - size1 = (int) ltt_type_size(trace, type); - if(fld->field_fixed == -1){ - fld->sequ_number_size = size1; + /* From gcov profiling : half string, half struct, can we gain something + * from that ? (Mathieu) */ + switch(type->type_class) { + case LTT_ARRAY: + element_number = (int) type->element_number; + if(fld->field_fixed == -1){ + size = getFieldtypeSize(tf, evT, offsetRoot, + 0,fld->child[0], NULL); + if(size == 0){ //has string or sequence fld->field_fixed = 0; - size = getFieldtypeSize(t, evT, offsetRoot, - 0,fld->child[0], NULL, trace); - fld->element_size = size; - }else{//0: sequence - element_number = getIntNumber(size1,evD); - type->element_number = element_number; - if(fld->element_size > 0){ - size = element_number * fld->element_size; - }else{//sequence has string or sequence - size = 0; - for(i=0;ichild[0], evD+size+size1, trace); - } - } - size += size1; - } - if(unlikely(!evD)){ - fld->fixed_root = (offsetRoot==-1) ? 0 : 1; - fld->fixed_parent = (offsetParent==-1) ? 0 : 1; + }else{ + fld->field_fixed = 1; + size *= element_number; } - - break; - - case LTT_STRING: + }else if(fld->field_fixed == 0){// has string or sequence size = 0; - if(fld->field_fixed == -1){ - fld->field_fixed = 0; - }else{//0: string - /* Hope my implementation is faster than strlen (Mathieu) */ - char *ptr=(char*)evD; - size = 1; - /* from gcov : many many strings are empty, make it the common case.*/ - while(unlikely(*ptr != '\0')) { size++; ptr++; } - //size = ptr - (char*)evD + 1; //include end : '\0' + for(i=0;ichild[0], evD+size); } + }else size = fld->field_size; + if(unlikely(!evD)){ fld->fixed_root = (offsetRoot==-1) ? 0 : 1; fld->fixed_parent = (offsetParent==-1) ? 0 : 1; + } - break; - - case LTT_STRUCT: - element_number = (int) type->element_number; - size = 0; - /* tested with gcov */ - if(unlikely(fld->field_fixed == -1)){ - offset1 = offsetRoot; - offset2 = 0; + break; + + case LTT_SEQUENCE: + size1 = (int) ltt_type_size(fac, type); + if(fld->field_fixed == -1){ + fld->sequ_number_size = size1; + fld->field_fixed = 0; + size = getFieldtypeSize(evT, offsetRoot, + 0,fld->child[0], NULL); + fld->element_size = size; + }else{//0: sequence + element_number = getIntNumber(tf,size1,evD); + type->element_number = element_number; + if(fld->element_size > 0){ + size = element_number * fld->element_size; + }else{//sequence has string or sequence + size = 0; for(i=0;ichild[i], NULL, trace); - if(likely(size1 > 0 && size >= 0)){ - size += size1; - if(likely(offset1 >= 0)) offset1 += size1; - offset2 += size1; - }else{ - size = -1; - offset1 = -1; - offset2 = -1; - } + size += getFieldtypeSize(tf, evT, + offsetRoot+size+size1,size+size1, + fld->child[0], evD+size+size1); } - if(unlikely(size == -1)){ - fld->field_fixed = 0; - size = 0; - }else fld->field_fixed = 1; - }else if(likely(fld->field_fixed == 0)){ - offset1 = offsetRoot; - offset2 = 0; - for(i=0;unlikely(ichild[i],evD+offset2, trace); - offset1 += size; - offset2 += size; - } - size = offset2; - }else size = fld->field_size; + } + size += size1; + } + if(unlikely(!evD)){ fld->fixed_root = (offsetRoot==-1) ? 0 : 1; fld->fixed_parent = (offsetParent==-1) ? 0 : 1; - break; + } - default: - if(unlikely(fld->field_fixed == -1)){ - size = (int) ltt_type_size(trace, type); - fld->field_fixed = 1; - }else size = fld->field_size; - if(unlikely(!evD)){ - fld->fixed_root = (offsetRoot==-1) ? 0 : 1; - fld->fixed_parent = (offsetParent==-1) ? 0 : 1; + break; + + case LTT_STRING: + size = 0; + if(fld->field_fixed == -1){ + fld->field_fixed = 0; + }else{//0: string + /* Hope my implementation is faster than strlen (Mathieu) */ + char *ptr=(char*)evD; + size = 1; + /* from gcov : many many strings are empty, make it the common case.*/ + while(unlikely(*ptr != '\0')) { size++; ptr++; } + //size = ptr - (char*)evD + 1; //include end : '\0' + } + fld->fixed_root = (offsetRoot==-1) ? 0 : 1; + fld->fixed_parent = (offsetParent==-1) ? 0 : 1; + + break; + + case LTT_STRUCT: + element_number = (int) type->element_number; + size = 0; + /* tested with gcov */ + if(unlikely(fld->field_fixed == -1)){ + offset1 = offsetRoot; + offset2 = 0; + for(i=0;ichild[i], NULL); + if(likely(size1 > 0 && size >= 0)){ + size += size1; + if(likely(offset1 >= 0)) offset1 += size1; + offset2 += size1; + }else{ + size = -1; + offset1 = -1; + offset2 = -1; + } } - break; - } + if(unlikely(size == -1)){ + fld->field_fixed = 0; + size = 0; + }else fld->field_fixed = 1; + }else if(likely(fld->field_fixed == 0)){ + offset1 = offsetRoot; + offset2 = 0; + for(i=0;unlikely(ichild[i], evD+offset2); + offset1 += size; + offset2 += size; + } + size = offset2; + }else size = fld->field_size; + fld->fixed_root = (offsetRoot==-1) ? 0 : 1; + fld->fixed_parent = (offsetParent==-1) ? 0 : 1; + break; + + default: + if(unlikely(fld->field_fixed == -1)){ + size = (int) ltt_type_size(LTT_GET_BO(tf), type); + fld->field_fixed = 1; + }else size = fld->field_size; + if(unlikely(!evD)){ + fld->fixed_root = (offsetRoot==-1) ? 0 : 1; + fld->fixed_parent = (offsetParent==-1) ? 0 : 1; + } + break; } fld->offset_root = offsetRoot; @@ -1565,64 +2468,66 @@ end_getFieldtypeSize: return size; } - +#endif //0 /***************************************************************************** *Function name - * getIntNumber : get an integer number + * ltt_get_int : get an integer number *Input params + * reverse_byte_order: must we reverse the byte order ? * size : the size of the integer - * evD : the event data + * ptr : the data pointer *Return value * gint64 : a 64 bits integer ****************************************************************************/ -gint64 getIntNumber(int size, void *evD) +gint64 ltt_get_int(gboolean reverse_byte_order, gint size, void *data) { - gint64 i; + gint64 val; switch(size) { - case 1: i = *(gint8 *)evD; break; - case 2: i = *(gint16 *)evD; break; - case 4: i = *(gint32 *)evD; break; - case 8: i = *(gint64 *)evD; break; - default: i = *(gint64 *)evD; - g_critical("getIntNumber : integer size %d unknown", size); + case 1: val = *((gint8*)data); break; + case 2: val = ltt_get_int16(reverse_byte_order, data); break; + case 4: val = ltt_get_int32(reverse_byte_order, data); break; + case 8: val = ltt_get_int64(reverse_byte_order, data); break; + default: val = ltt_get_int64(reverse_byte_order, data); + g_critical("get_int : integer size %d unknown", size); break; } - return (gint64)i; + return val; } /***************************************************************************** *Function name - * getDataEndianType : get the data type size and endian type of the local - * machine + * ltt_get_uint : get an unsigned integer number *Input params - * size : size of data type - * endian : endian type, little or big + * reverse_byte_order: must we reverse the byte order ? + * size : the size of the integer + * ptr : the data pointer + *Return value + * guint64 : a 64 bits unsigned integer ****************************************************************************/ -void getDataEndianType(LttArchSize * size, LttArchEndian * endian) +guint64 ltt_get_uint(gboolean reverse_byte_order, gint size, void *data) { - int i = 1; - char c = (char) i; - int sizeInt=sizeof(int), sizeLong=sizeof(long), sizePointer=sizeof(void *); + guint64 val; - if(c == 1) *endian = LTT_LITTLE_ENDIAN; - else *endian = LTT_BIG_ENDIAN; + switch(size) { + case 1: val = *((gint8*)data); break; + case 2: val = ltt_get_uint16(reverse_byte_order, data); break; + case 4: val = ltt_get_uint32(reverse_byte_order, data); break; + case 8: val = ltt_get_uint64(reverse_byte_order, data); break; + default: val = ltt_get_uint64(reverse_byte_order, data); + g_critical("get_uint : unsigned integer size %d unknown", + size); + break; + } - if(sizeInt == 2 && sizeLong == 4 && sizePointer == 4) - *size = LTT_LP32; - else if(sizeInt == 4 && sizeLong == 4 && sizePointer == 4) - *size = LTT_ILP32; - else if(sizeInt == 4 && sizeLong == 8 && sizePointer == 8) - *size = LTT_LP64; - else if(sizeInt == 8 && sizeLong == 8 && sizePointer == 8) - *size = LTT_ILP64; - else *size = LTT_UNKNOWN; + return val; } + /* get the node name of the system */ char * ltt_trace_system_description_node_name (LttSystemDescription * s) @@ -1670,3 +2575,13 @@ void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src) *dest = *src; } +/* Before library loading... */ + +static void __attribute__((constructor)) init(void) +{ + LTT_FACILITY_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); + LTT_EVENT_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); + + LTT_TRACEFILE_NAME_FACILITIES = g_quark_from_string("/control/facilities"); +} +