-/* This file is part of the Linux Trace Toolkit viewer
- * Copyright (C) 2003-2004 Xiangxiu Yang, Mathieu Desnoyers
- *
- * 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;
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdio.h>
-#include <fcntl.h>
-#include <string.h>
-#include <dirent.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <errno.h>
-#include <unistd.h>
-#include <math.h>
-#include <glib.h>
-
-// For realpath
-#include <limits.h>
-#include <stdlib.h>
-
-
-#include "parser.h"
-#include <ltt/ltt.h>
-#include "ltt-private.h"
-#include <ltt/trace.h>
-#include <ltt/facility.h>
-#include <ltt/event.h>
-#include <ltt/type.h>
-#include <ltt/ltt-types.h>
-
-#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)
-
-#define g_close close
-
-/* obtain the time of an event */
-
-static inline LttTime getEventTime(LttTracefile * tf);
-
-
-/* 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);
-
-/* 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);
-
-/* read a fixed size or a block information from the file (fd) */
-int readFile(int fd, void * buf, size_t size, gchar * mesg);
-int readBlock(LttTracefile * tf, int whichBlock);
-
-/* 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);
-
-/* go to the next event */
-int skipEvent(LttTracefile * t);
-
-
-/* Functions to parse system.xml file (using glib xml parser) */
-static void parser_start_element (GMarkupParseContext __UNUSED__ *context,
- const gchar *element_name,
- const gchar **attribute_names,
- const gchar **attribute_values,
- gpointer user_data,
- GError **error)
-{
- int i=0;
- LttSystemDescription* des = (LttSystemDescription* )user_data;
- if(strcmp("system", element_name)){
- *error = g_error_new(G_MARKUP_ERROR,
- G_LOG_LEVEL_WARNING,
- "This is not system.xml file");
- return;
- }
-
- while(attribute_names[i]){
- if(strcmp("node_name", attribute_names[i])==0){
- des->node_name = g_strdup(attribute_values[i]);
- }else if(strcmp("domainname", attribute_names[i])==0){
- des->domain_name = g_strdup(attribute_values[i]);
- }else if(strcmp("cpu", attribute_names[i])==0){
- des->nb_cpu = atoi(attribute_values[i]);
- }else if(strcmp("arch_size", attribute_names[i])==0){
- if(strcmp(attribute_values[i],"LP32") == 0) des->size = LTT_LP32;
- else if(strcmp(attribute_values[i],"ILP32") == 0) des->size = LTT_ILP32;
- else if(strcmp(attribute_values[i],"LP64") == 0) des->size = LTT_LP64;
- else if(strcmp(attribute_values[i],"ILP64") == 0) des->size = LTT_ILP64;
- else if(strcmp(attribute_values[i],"UNKNOWN") == 0) des->size = LTT_UNKNOWN;
- }else if(strcmp("endian", attribute_names[i])==0){
- if(strcmp(attribute_values[i],"LITTLE_ENDIAN") == 0)
- des->endian = LTT_LITTLE_ENDIAN;
- else if(strcmp(attribute_values[i],"BIG_ENDIAN") == 0)
- des->endian = LTT_BIG_ENDIAN;
- }else if(strcmp("kernel_name", attribute_names[i])==0){
- des->kernel_name = g_strdup(attribute_values[i]);
- }else if(strcmp("kernel_release", attribute_names[i])==0){
- des->kernel_release = g_strdup(attribute_values[i]);
- }else if(strcmp("kernel_version", attribute_names[i])==0){
- des->kernel_version = g_strdup(attribute_values[i]);
- }else if(strcmp("machine", attribute_names[i])==0){
- des->machine = g_strdup(attribute_values[i]);
- }else if(strcmp("processor", attribute_names[i])==0){
- des->processor = g_strdup(attribute_values[i]);
- }else if(strcmp("hardware_platform", attribute_names[i])==0){
- des->hardware_platform = g_strdup(attribute_values[i]);
- }else if(strcmp("operating_system", attribute_names[i])==0){
- des->operating_system = g_strdup(attribute_values[i]);
- }else if(strcmp("ltt_major_version", attribute_names[i])==0){
- des->ltt_major_version = atoi(attribute_values[i]);
- }else if(strcmp("ltt_minor_version", attribute_names[i])==0){
- des->ltt_minor_version = atoi(attribute_values[i]);
- }else if(strcmp("ltt_block_size", attribute_names[i])==0){
- des->ltt_block_size = atoi(attribute_values[i]);
- }else{
- *error = g_error_new(G_MARKUP_ERROR,
- G_LOG_LEVEL_WARNING,
- "Not a valid attribute");
- return;
- }
- i++;
- }
-}
-
-static void parser_characters (GMarkupParseContext __UNUSED__ *context,
- const gchar *text,
- gsize __UNUSED__ text_len,
- gpointer user_data,
- GError __UNUSED__ **error)
-{
- LttSystemDescription* des = (LttSystemDescription* )user_data;
- des->description = g_strdup(text);
-}
-
-
-/*****************************************************************************
- *Function name
- * ltt_tracefile_open : open a trace file, construct a LttTracefile
- *Input params
- * t : the trace containing the tracefile
- * fileName : path name of the trace file
- *Return value
- * : a pointer to a tracefile
- ****************************************************************************/
-
-LttTracefile* ltt_tracefile_open(LttTrace * t, gchar * fileName)
-{
- LttTracefile * tf;
- struct stat lTDFStat; /* Trace data file status */
-
- tf = g_new(LttTracefile, 1);
-
- //open the file
- tf->name = g_strdup(fileName);
- tf->trace = t;
- tf->fd = g_open(fileName, O_RDONLY, 0);
- if(tf->fd < 0){
- g_warning("Unable to open input data file %s\n", fileName);
- g_free(tf->name);
- g_free(tf);
- return NULL;
- }
-
- // 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);
- g_close(tf->fd);
- g_free(tf);
- return NULL;
- }
-
- // Is the file large enough to contain a trace
- if(lTDFStat.st_size < (off_t)(sizeof(BlockStart) + EVENT_HEADER_SIZE)){
- g_print("The input data file %s does not contain a trace\n", fileName);
- g_free(tf->name);
- g_close(tf->fd);
- g_free(tf);
- return NULL;
- }
-
- //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(gchar, t->system_description->ltt_block_size);
-
- //read the first block
- if(readBlock(tf,1)) exit(1);
-
- return tf;
-}
-
-
-/*****************************************************************************
- *Open control and per cpu tracefiles
- ****************************************************************************/
-
-void ltt_tracefile_open_cpu(LttTrace *t, gchar * tracefile_name)
-{
- LttTracefile * tf;
- tf = ltt_tracefile_open(t,tracefile_name);
- if(!tf) return;
- t->per_cpu_tracefile_number++;
- g_ptr_array_add(t->per_cpu_tracefiles, tf);
-}
-
-gint ltt_tracefile_open_control(LttTrace *t, gchar * control_name)
-{
- LttTracefile * tf;
- LttEvent ev;
- LttFacility * f;
- void * pos;
- FacilityLoad fLoad;
- unsigned int i;
-
- tf = ltt_tracefile_open(t,control_name);
- if(!tf) {
- g_warning("ltt_tracefile_open_control : bad file descriptor");
- return -1;
- }
- t->control_tracefile_number++;
- g_ptr_array_add(t->control_tracefiles,tf);
-
- //parse facilities tracefile to get base_id
- if(strcmp(&control_name[strlen(control_name)-10],"facilities") ==0){
- while(1){
- if(!ltt_tracefile_read(tf,&ev)) return 0; // end of file
-
- if(ev.event_id == TRACE_FACILITY_LOAD){
- pos = ev.data;
- fLoad.name = (gchar*)pos;
- fLoad.checksum = *(LttChecksum*)(pos + strlen(fLoad.name));
- fLoad.base_code = *(guint32 *)(pos + strlen(fLoad.name) + sizeof(LttChecksum));
-
- for(i=0;i<t->facility_number;i++){
- f = (LttFacility*)g_ptr_array_index(t->facilities,i);
- if(strcmp(f->name,fLoad.name)==0 && fLoad.checksum==f->checksum){
- f->base_id = fLoad.base_code;
- break;
- }
- }
- if(i==t->facility_number) {
- g_warning("Facility: %s, checksum: %u is not found",
- fLoad.name,(unsigned int)fLoad.checksum);
- return -1;
- }
- }else if(ev.event_id == TRACE_BLOCK_START){
- continue;
- }else if(ev.event_id == TRACE_BLOCK_END){
- break;
- }else {
- g_warning("Not valid facilities trace file");
- return -1;
- }
- }
- }
- return 0;
-}
-
-/*****************************************************************************
- *Function name
- * ltt_tracefile_close: close a trace file,
- *Input params
- * t : tracefile which will be closed
- ****************************************************************************/
-
-void ltt_tracefile_close(LttTracefile *t)
-{
- g_free(t->name);
- g_free(t->buffer);
- close(t->fd);
- g_free(t);
-}
-
-
-/*****************************************************************************
- *Get system information
- ****************************************************************************/
-gint getSystemInfo(LttSystemDescription* des, gchar * pathname)
-{
- int fd;
- GIOChannel *iochan;
- gchar *buf = NULL;
- gsize length;
-
- GMarkupParseContext * context;
- GError * error = NULL;
- GMarkupParser markup_parser =
- {
- parser_start_element,
- NULL,
- parser_characters,
- NULL, /* passthrough */
- NULL /* error */
- };
-
- 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){
- 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);
-
- 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);
-
- 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;
-}
-
-/*****************************************************************************
- *The following functions get facility/tracefile information
- ****************************************************************************/
-
-gint getFacilityInfo(LttTrace *t, gchar* eventdefs)
-{
- GDir * dir;
- const gchar * name;
- unsigned int i,j;
- LttFacility * f;
- LttEventType * et;
- gchar fullname[DIR_NAME_SIZE];
- GError * error = NULL;
-
- dir = g_dir_open(eventdefs, 0, &error);
-
- if(error != NULL) {
- g_warning("Can not open directory: %s, %s\n", eventdefs, error->message);
- g_error_free(error);
- return -1;
- }
-
- 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;j<t->facility_number;j++){
- f = (LttFacility*)g_ptr_array_index(t->facilities, j);
- for(i=0; i<f->event_number; i++){
- et = f->events[i];
- setFieldsOffset(NULL, et, NULL, t);
- }
- }
- return 0;
-}
-
-gint getControlFileInfo(LttTrace *t, gchar* control)
-{
- GDir * dir;
- const gchar *name;
- gchar fullname[DIR_NAME_SIZE];
- GError * error = NULL;
-
- dir = g_dir_open(control, 0, &error);
-
- if(error != NULL) {
- g_warning("Can not open directory: %s, %s\n", control, error->message);
- g_error_free(error);
- return -1;
- }
-
- while((name = g_dir_read_name(dir)) != NULL){
- if(strcmp(name,"facilities") != 0 &&
- strcmp(name,"interrupts") != 0 &&
- strcmp(name,"processes") != 0) continue;
-
- strcpy(fullname,control);
- strcat(fullname,name);
- if(ltt_tracefile_open_control(t,fullname)) {
- g_dir_close(dir);
- return -1;
- }
- }
- g_dir_close(dir);
- return 0;
-}
-
-gint getCpuFileInfo(LttTrace *t, char* cpu)
-{
- GDir * dir;
- const gchar * name;
- gchar fullname[DIR_NAME_SIZE];
- GError * error = NULL;
-
- dir = g_dir_open(cpu, 0, &error);
-
- if(error != NULL) {
- g_warning("Can not open directory: %s, %s\n", cpu, error->message);
- g_error_free(error);
- return -1;
- }
-
- while((name = g_dir_read_name(dir)) != NULL){
- if(strcmp(name,".svn") != 0){ /* . and .. already excluded */
- strcpy(fullname,cpu);
- strcat(fullname,name);
- ltt_tracefile_open_cpu(t,fullname);
- }else continue;
- }
- g_dir_close(dir);
- return 0;
-}
-
-/*****************************************************************************
- *A trace is specified as a pathname to the directory containing all the
- *associated data (control tracefiles, per cpu tracefiles, event
- *descriptions...).
- *
- *When a trace is closed, all the associated facilities, types and fields
- *are released as well.
- */
-
-
-/****************************************************************************
- * get_absolute_pathname
- *
- * return the unique pathname in the system
- *
- * MD : Fixed this function so it uses realpath, dealing well with
- * forgotten cases (.. were not used correctly before).
- *
- ****************************************************************************/
-void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname)
-{
- abs_pathname[0] = '\0';
-
- if ( realpath (pathname, abs_pathname) != NULL)
- return;
- else
- {
- /* error, return the original path unmodified */
- strcpy(abs_pathname, pathname);
- return;
- }
- return;
-}
-
-LttTrace *ltt_trace_open(const gchar *pathname)
-{
- LttTrace * t;
- LttSystemDescription * sys_description;
- gchar eventdefs[DIR_NAME_SIZE];
- gchar info[DIR_NAME_SIZE];
- gchar control[DIR_NAME_SIZE];
- gchar cpu[DIR_NAME_SIZE];
- gchar tmp[DIR_NAME_SIZE];
- gchar abs_path[DIR_NAME_SIZE];
- gboolean has_slash = FALSE;
-
- 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;
- }
-
- /* Set the reverse byte order between trace and reader */
- if(sys_description->endian == LTT_LITTLE_ENDIAN
- && G_BYTE_ORDER != G_LITTLE_ENDIAN) {
- t->reverse_byte_order = 1;
- } else if(sys_description->endian == LTT_BIG_ENDIAN
- && G_BYTE_ORDER != G_BIG_ENDIAN) {
- t->reverse_byte_order = 1;
- } else t->reverse_byte_order = 0;
-
- //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;
- }
-
- //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;
-}
-
-char * ltt_trace_name(LttTrace *t)
-{
- return t->pathname;
-}
-
-
-/******************************************************************************
- * 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 ltt_trace_open(self->pathname);
-}
-
-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;i<t->control_tracefile_number;i++){
- tf = (LttTracefile*)g_ptr_array_index(t->control_tracefiles,i);
- ltt_tracefile_close(tf);
- }
- g_ptr_array_free(t->control_tracefiles, TRUE);
-
- //free per_cpu_tracefiles
- for(i=0;i<t->per_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);
-
- //free facilities
- for(i=0;i<t->facility_number;i++){
- f = (LttFacility*)g_ptr_array_index(t->facilities,i);
- ltt_facility_close(f);
- }
- g_ptr_array_free(t->facilities, TRUE);
-
- g_free(t);
-
- g_blow_chunks();
-}
-
-
-/*****************************************************************************
- *Get the system description of the trace
- ****************************************************************************/
-
-LttSystemDescription *ltt_trace_system_description(LttTrace *t)
-{
- return t->system_description;
-}
-
-/*****************************************************************************
- * The following functions discover the facilities of the trace
- ****************************************************************************/
-
-unsigned ltt_trace_facility_number(LttTrace *t)
-{
- return (unsigned)(t->facility_number);
-}
-
-LttFacility *ltt_trace_facility_get(LttTrace *t, unsigned i)
-{
- return (LttFacility*)g_ptr_array_index(t->facilities, i);
-}
-
-/*****************************************************************************
- *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
- ****************************************************************************/
-
-unsigned ltt_trace_facility_find(LttTrace *t, char *name, unsigned *position)
-{
- unsigned int i, count=0;
- LttFacility * f;
- for(i=0;i<t->facility_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;
-}
-
-/*****************************************************************************
- * Functions to discover all the event types in the trace
- ****************************************************************************/
-
-unsigned ltt_trace_eventtype_number(LttTrace *t)
-{
- unsigned int i;
- unsigned count = 0;
- unsigned int num = t->facility_number;
- LttFacility * f;
-
- for(i=0;i<num;i++){
- f = (LttFacility*)g_ptr_array_index(t->facilities, i);
- count += f->event_number;
- }
- return count;
-}
-
-/* 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;
-
- for(i=0;unlikely(i<num);){
- LttFacility *iter_facility =
- (LttFacility*) g_ptr_array_index(facilities,i);
- unsigned base_id = iter_facility->base_id;
-
- if(likely(id >= base_id &&
- id < base_id + iter_facility->event_number)) {
- facility = iter_facility;
- break;
- } else {
- i++;
- }
- }
-
- return facility;
-}
-
-LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned evId)
-{
- LttEventType *event_type;
-
- 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;
-}
-
-/*****************************************************************************
- *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)
-{
- return t->control_tracefile_number;
-}
-
-unsigned ltt_trace_per_cpu_tracefile_number(LttTrace *t)
-{
- return t->per_cpu_tracefile_number;
-}
-
-/*****************************************************************************
- *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)
-{
- LttTracefile * tracefile;
- unsigned int i;
- for(i=0;i<t->control_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;
-}
-
-/* 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;i<t->per_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;
-}
-
-/*****************************************************************************
- *Get a specific tracefile
- ****************************************************************************/
-
-LttTracefile *ltt_trace_control_tracefile_get(LttTrace *t, unsigned i)
-{
- return (LttTracefile*)g_ptr_array_index(t->control_tracefiles, i);
-}
-
-LttTracefile *ltt_trace_per_cpu_tracefile_get(LttTrace *t, unsigned i)
-{
- return (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles, i);
-}
-
-/*****************************************************************************
- * Get the start time and end time of the trace
- ****************************************************************************/
-
-void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end)
-{
- LttTime startSmall, startTmp, endBig, endTmp;
- unsigned int i, j=0;
- LttTracefile * tf;
-
- for(i=0;i<t->control_tracefile_number;i++){
- tf = g_ptr_array_index(t->control_tracefiles, i);
- readBlock(tf,1);
- startTmp = ltt_get_time(t->reverse_byte_order, &tf->a_block_start->time);
- readBlock(tf,tf->block_number);
- endTmp = ltt_get_time(t->reverse_byte_order, &tf->a_block_end->time);
- if(i==0){
- startSmall = startTmp;
- endBig = endTmp;
- j = 1;
- continue;
- }
- if(ltt_time_compare(startSmall,startTmp) > 0) startSmall = startTmp;
- if(ltt_time_compare(endBig,endTmp) < 0) endBig = endTmp;
- }
-
- for(i=0;i<t->per_cpu_tracefile_number;i++){
- tf = g_ptr_array_index(t->per_cpu_tracefiles, i);
- readBlock(tf,1);
- startTmp = ltt_get_time(t->reverse_byte_order, &tf->a_block_start->time);
- readBlock(tf,tf->block_number);
- endTmp = ltt_get_time(t->reverse_byte_order, &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;
- }
-
- if(start != NULL) *start = startSmall;
- if(end != NULL) *end = endBig;
-}
-
-
-/*****************************************************************************
- *Get the name of a tracefile
- ****************************************************************************/
-
-char *ltt_tracefile_name(LttTracefile *tf)
-{
- return tf->name;
-}
-
-/*****************************************************************************
- * Get the number of blocks in the tracefile
- ****************************************************************************/
-
-unsigned ltt_tracefile_block_number(LttTracefile *tf)
-{
- return tf->block_number;
-}
-
-/*****************************************************************************
- *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
- ****************************************************************************/
-void ltt_tracefile_find_time_block(LttTracefile *t, LttTime time,
- int start_block, int end_block)
-{
- int err, tmp_block, s, e;
- int headTime;
- int tailTime;
-
- err=readBlock(t,start_block);
- if(err) g_error("Can not read tracefile: %s\n", t->name);
- if(start_block == end_block)return;
-
- tailTime = ltt_time_compare(ltt_get_time(t->trace->reverse_byte_order,
- &t->a_block_end->time), time);
- if(tailTime >= 0) return;
-
- err=readBlock(t,end_block);
- if(err) g_error("Can not read tracefile: %s\n", t->name);
- if(start_block+1 == end_block)return;
-
- headTime = ltt_time_compare(ltt_get_time(t->trace->reverse_byte_order,
- &t->a_block_start->time), time);
- if(headTime <= 0 ) return;
-
- 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(ltt_get_time(t->trace->reverse_byte_order,
- &t->a_block_start->time), time);
- tailTime = ltt_time_compare(ltt_get_time(t->trace->reverse_byte_order,
- &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(ltt_get_time(t->trace->reverse_byte_order,
- &t->a_block_start->time), time);
- t_time = ltt_time_compare(ltt_get_time(t->trace->reverse_byte_order,
- &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(ltt_get_time(t->trace->reverse_byte_order,
- &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);
- }
-}
-
-void ltt_tracefile_seek_time(LttTracefile *t, LttTime time)
-{
- int err;
- LttTime lttTime;
- int headTime = ltt_time_compare(ltt_get_time(t->trace->reverse_byte_order,
- &t->a_block_start->time), time);
- int tailTime = ltt_time_compare(ltt_get_time(t->trace->reverse_byte_order,
- &t->a_block_end->time), time);
- LttEvent ev;
-
- if(headTime < 0 && tailTime > 0){
- if(ltt_time_compare(ltt_get_time(t->trace->reverse_byte_order,
- &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);
- }
- }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);
- }
- }
- }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;
- }
-}
-
-/*****************************************************************************
- * 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;
-
- 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;
- }
-
- //only block number and event index are available
- //MD: warning : this is slow!
- g_warning("using slow O(n) tracefile seek position");
-
- LttEvent event;
- while(likely(t->which_event < ep->event_num)) ltt_tracefile_read(t, &event);
-
- return;
-}
-
-/*****************************************************************************
- *Function name
- * ltt_tracefile_read : read the current event, set the pointer to the next
- *Input params
- * t : tracefile
- *Return value
- * LttEvent * : an event to be processed
- ****************************************************************************/
-
-LttEvent *ltt_tracefile_read(LttTracefile *t, LttEvent *event)
-{
- int err;
-
- if(unlikely(t->cur_event_pos == t->buffer + t->block_size)){
- if(unlikely(t->which_block == t->block_number)){
- return NULL;
- }
- err = readBlock(t, t->which_block + 1);
- if(unlikely(err))g_error("Can not read tracefile");
- }
-
- event->event_id = ltt_get_uint16(t->trace->reverse_byte_order, 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 = ltt_get_uint32(t->trace->reverse_byte_order, 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;
-
- /* 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 event;
-}
-
-/****************************************************************************
- *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)
-{
- ssize_t nbBytes = read(fd, buf, size);
-
- if((size_t)nbBytes != size) {
- if(nbBytes < 0) {
- perror("Error in readFile : ");
- } else {
- g_warning("%s",mesg);
- }
- return EIO;
- }
- return 0;
-}
-
-
-/****************************************************************************
- *Function name
- * readBlock : read a block from the file
- *Input Params
- * lttdes : ltt trace file
- * whichBlock : the block which will be read
- *return value
- * 0 : success
- * EINVAL : lseek fail
- * EIO : can not read from the file
- ****************************************************************************/
-
-int readBlock(LttTracefile * tf, int whichBlock)
-{
- off_t nbBytes;
- guint32 lostSize;
-
- /* 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 = ltt_get_time(tf->trace->reverse_byte_order,
- &tf->a_block_end->time);
- tf->prev_event_time = ltt_get_time(tf->trace->reverse_byte_order,
- &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;
- }
-
- nbBytes=lseek(tf->fd,(off_t)((whichBlock-1)*tf->block_size), SEEK_SET);
- if(unlikely(nbBytes == -1)) return EINVAL;
-
- 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;
-
- /* read the whole block to precalculate total of cycles in it */
- tf->count = 0;
- tf->pre_cycle_count = 0;
- tf->cur_cycle_count = ltt_get_uint32(tf->trace->reverse_byte_order, tf->cur_event_pos + EVENT_ID_SIZE);
-
- getCyclePerNsec(tf);
-
- tf->overflow_nsec =
- (-((double)
- (ltt_get_uint64(tf->trace->reverse_byte_order,
- &tf->a_block_start->cycle_count)&0xFFFFFFFF))
- * tf->nsec_per_cycle);
-
- tf->current_event_time = getEventTime(tf);
-
- return 0;
-}
-
-/*****************************************************************************
- *Function name
- * updateTracefile : reinitialize the info of the block which is already
- * in the buffer
- *Input params
- * tf : tracefile
- ****************************************************************************/
-
-void updateTracefile(LttTracefile * tf)
-{
- tf->which_event = 1;
- tf->cur_event_pos = tf->buffer;
- tf->current_event_time = getEventTime(tf);
- tf->cur_heart_beat_number = 0;
-
- tf->prev_event_time.tv_sec = 0;
- tf->prev_event_time.tv_nsec = 0;
- tf->count = 0;
-
- tf->overflow_nsec =
- (-((double)ltt_get_uint64(tf->trace->reverse_byte_order,
- &tf->a_block_start->cycle_count))
- * tf->nsec_per_cycle);
-
-}
-
-/*****************************************************************************
- *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)
-{
- int evId;
- void * evData;
- LttEventType * evT;
- LttField * rootFld;
-
- evId = ltt_get_uint16(t->trace->reverse_byte_order, t->cur_event_pos);
- evData = t->cur_event_pos + EVENT_HEADER_SIZE;
-
- 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->cur_cycle_count = ltt_get_uint32(t->trace->reverse_byte_order,
- t->cur_event_pos + EVENT_ID_SIZE);
- t->which_event++;
- t->current_event_time = getEventTime(t);
- }
-
- return 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.
- *Input Params
- * t : tracefile
- ****************************************************************************/
-
-void getCyclePerNsec(LttTracefile * t)
-{
- LttTime lBufTotalTime; /* Total time for this buffer */
- double lBufTotalNSec; /* Total time for this buffer in nsecs */
- LttCycleCount lBufTotalCycle;/* Total cycles for this buffer */
-
- /* Calculate the total time for this buffer */
- lBufTotalTime = ltt_time_sub(
- ltt_get_time(t->trace->reverse_byte_order, &t->a_block_end->time),
- ltt_get_time(t->trace->reverse_byte_order, &t->a_block_start->time));
-
- /* Calculate the total cycles for this bufffer */
- lBufTotalCycle = ltt_get_uint64(t->trace->reverse_byte_order,
- &t->a_block_end->cycle_count);
- lBufTotalCycle -= ltt_get_uint64(t->trace->reverse_byte_order,
- &t->a_block_start->cycle_count);
-
- /* Convert the total time to double */
- lBufTotalNSec = ltt_time_to_double(lBufTotalTime);
-
- t->nsec_per_cycle = (double)lBufTotalNSec / (double)lBufTotalCycle;
-
- /* Pre-multiply one overflow (2^32 cycles) by nsec_per_cycle */
- t->one_overflow_nsec = t->nsec_per_cycle * (double)0x100000000ULL;
-
-}
-
-/****************************************************************************
- *Function name
- * getEventTime : obtain the time of an event
- * NOTE : this function _really_ is on critical path.
- *Input params
- * tf : tracefile
- *Return value
- * LttTime : the time of the event
- ****************************************************************************/
-
-static inline LttTime getEventTime(LttTracefile * tf)
-{
- 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 = ltt_get_uint16(tf->trace->reverse_byte_order,
- tf->cur_event_pos);
-
- cycle_count = ltt_get_uint32(tf->trace->reverse_byte_order,
- tf->cur_event_pos + EVENT_ID_SIZE);
-
- gboolean comp_count = cycle_count < tf->pre_cycle_count;
-
- tf->pre_cycle_count = cycle_count;
-
- if(unlikely(comp_count)) {
- /* Overflow */
- tf->overflow_nsec += tf->one_overflow_nsec;
- tf->count++; //increment overflow count
- }
-
- if(unlikely(evId == TRACE_BLOCK_START)) {
- lEventNSec = 0;
- } else if(unlikely(evId == TRACE_BLOCK_END)) {
- lEventNSec = ((double)
- (ltt_get_uint64(tf->trace->reverse_byte_order,
- &tf->a_block_end->cycle_count)
- - ltt_get_uint64(tf->trace->reverse_byte_order,
- &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;
- }
-
- lTimeOffset = ltt_time_from_uint64(lEventNSec);
-
- time = ltt_time_add(ltt_get_time(tf->trace->reverse_byte_order,
- &tf->a_block_start->time), lTimeOffset);
-
- return time;
-}
-
-/*****************************************************************************
- *Function name
- * setFieldsOffset : set offset of the fields
- *Input params
- * tracefile : opened trace file
- * evT : the event type
- * evD : event data, it may be NULL
- ****************************************************************************/
-
-void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace* t)
-{
- LttField * rootFld = evT->root_field;
- // rootFld->base_address = evD;
-
- if(likely(rootFld))
- rootFld->field_size = getFieldtypeSize(tf, evT, 0,0,rootFld, evD,t);
-}
-
-/*****************************************************************************
- *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
- * fld : field
- * evD : event data, it may be NULL
- *Return value
- * int : size of the field
- ****************************************************************************/
-
-static inline gint getFieldtypeSize(LttTracefile * t,
- LttEventType * evT, gint offsetRoot,
- gint offsetParent, LttField * fld, void *evD, LttTrace *trace)
-{
- 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;
- }
- }
-
- /* 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;i<element_number;i++){
- size += getFieldtypeSize(t, evT, offsetRoot+size,size,
- fld->child[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;
- 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(t->trace->reverse_byte_order,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;i<element_number;i++){
- size += getFieldtypeSize(t, evT, offsetRoot+size+size1,size+size1,
- fld->child[0], evD+size+size1, trace);
- }
- }
- size += size1;
- }
- 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;i<element_number;i++){
- size1=getFieldtypeSize(t, evT,offset1,offset2,
- fld->child[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;
- }
- }
- 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(i<element_number);i++){
- size=getFieldtypeSize(t,evT,offset1,offset2,
- fld->child[i],evD+offset2, trace);
- 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(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;
- }
- }
-
- fld->offset_root = offsetRoot;
- fld->offset_parent = offsetParent;
- fld->field_size = size;
-
-end_getFieldtypeSize:
-
- return size;
-}
-
-
-/*****************************************************************************
- *Function name
- * getIntNumber : get an integer number
- *Input params
- * size : the size of the integer
- * evD : the event data
- *Return value
- * gint64 : a 64 bits integer
- ****************************************************************************/
-
-gint64 getIntNumber(gboolean reverse_byte_order, int size, void *evD)
-{
- gint64 i;
-
- switch(size) {
- case 1: i = *((gint8*)evD); break;
- case 2: i = ltt_get_int16(reverse_byte_order, evD); break;
- case 4: i = ltt_get_int32(reverse_byte_order, evD); break;
- case 8: i = ltt_get_int64(reverse_byte_order, evD); break;
- default: i = ltt_get_int64(reverse_byte_order, evD);
- g_critical("getIntNumber : integer size %d unknown", size);
- break;
- }
-
- return i;
-}
-#if 0
-/*****************************************************************************
- *Function name
- * getDataEndianType : get the data type size and endian type of the local
- * machine
- *Input params
- * size : size of data type
- * endian : endian type, little or big
- ****************************************************************************/
-
-void getDataEndianType(LttArchSize * size, LttArchEndian * endian)
-{
- int i = 1;
- char c = (char) i;
- int sizeInt=sizeof(int), sizeLong=sizeof(long), sizePointer=sizeof(void *);
-
- if(c == 1) *endian = LTT_LITTLE_ENDIAN;
- else *endian = LTT_BIG_ENDIAN;
-
- 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;
-}
-#endif //0
-/* get the node name of the system */
-
-char * ltt_trace_system_description_node_name (LttSystemDescription * s)
-{
- return s->node_name;
-}
-
-
-/* get the domain name of the system */
-
-char * ltt_trace_system_description_domain_name (LttSystemDescription * s)
-{
- return s->domain_name;
-}
-
-
-/* get the description of the system */
-
-char * ltt_trace_system_description_description (LttSystemDescription * s)
-{
- return s->description;
-}
-
-
-/* get the start time of the trace */
-
-LttTime ltt_trace_system_description_trace_start_time(LttSystemDescription *s)
-{
- return s->trace_start;
-}
-
-
-LttTracefile *ltt_tracefile_new()
-{
- return g_new(LttTracefile, 1);
-}
-
-void ltt_tracefile_destroy(LttTracefile *tf)
-{
- g_free(tf);
-}
-
-void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src)
-{
- *dest = *src;
-}
-