+++ /dev/null
-/* This file is part of the Linux Trace Toolkit viewer
- * Copyright (C) 2005 Mathieu Desnoyers
- *
- * Complete rewrite from the original version made by XangXiu Yang.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License Version 2.1 as published by the Free Software Foundation.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; 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>
-#include <malloc.h>
-#include <sys/mman.h>
-#include <string.h>
-
-// For realpath
-#include <limits.h>
-#include <stdlib.h>
-
-
-#include <ltt/ltt.h>
-#include "ltt-private.h"
-#include <ltt/trace.h>
-#include <ltt/event.h>
-#include <ltt/ltt-types.h>
-#include <ltt/marker.h>
-
-/* Facility names used in this file */
-
-GQuark LTT_FACILITY_NAME_HEARTBEAT,
- LTT_EVENT_NAME_HEARTBEAT,
- LTT_EVENT_NAME_HEARTBEAT_FULL;
-GQuark LTT_TRACEFILE_NAME_FACILITIES;
-
-#ifndef g_open
-#define g_open open
-#endif
-
-
-#define __UNUSED__ __attribute__((__unused__))
-
-#define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format)
-
-#ifndef g_debug
-#define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format)
-#endif
-
-#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)
-
-LttTrace *father_trace = NULL;
-
-/* set the offset of the fields belonging to the event,
- need the information of the archecture */
-//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 facility size information. */
-#if 0
-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);
-#endif //0
-
-/* map a fixed size or a block information from the file (fd) */
-static gint map_block(LttTracefile * tf, guint block_num);
-
-/* 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 */
-static int ltt_seek_next_event(LttTracefile *tf);
-
-static int open_tracefiles(LttTrace *trace, gchar *root_path,
- gchar *relative_path);
-static int ltt_process_facility_tracefile(LttTracefile *tf);
-static void ltt_tracefile_time_span_get(LttTracefile *tf,
- LttTime *start, LttTime *end);
-static void group_time_span_get(GQuark name, gpointer data, gpointer user_data);
-static gint map_block(LttTracefile * tf, guint block_num);
-static void ltt_update_event_size(LttTracefile *tf);
-
-/* Enable event debugging */
-static int a_event_debug = 0;
-
-void ltt_event_debug(int state)
-{
- a_event_debug = state;
-}
-
-/* trace can be NULL
- *
- * Return value : 0 success, 1 bad tracefile
- */
-static 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;
- tf->alignment = any->alignment;
- tf->has_heartbeat = any->has_heartbeat;
-
- 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->compact_facilities = NULL;
- }
-
- switch(any->major_version) {
-
- case 0:
- g_warning("Unsupported trace version : %hhu.%hhu",
- any->major_version, any->minor_version);
- return 1;
- break;
- case 1:
- switch(any->minor_version) {
- case 0:
- {
- struct ltt_trace_header_1_0 *vheader =
- (struct ltt_trace_header_1_0 *)header;
- tf->buffer_header_size =
- sizeof(struct ltt_block_start_header)
- + sizeof(struct ltt_trace_header_1_0);
- tf->tsc_lsb_truncate = vheader->tsc_lsb_truncate;
- tf->tscbits = vheader->tscbits;
- tf->tsc_msb_cutoff = 32 - tf->tsc_lsb_truncate - tf->tscbits;
- tf->compact_event_bits = 32 - vheader->compact_data_shift;
- tf->tsc_mask = ((1ULL << (tf->tscbits))-1);
- tf->tsc_mask = tf->tsc_mask << tf->tsc_lsb_truncate;
- tf->tsc_mask_next_bit = (1ULL<<(tf->tscbits));
- tf->tsc_mask_next_bit = tf->tsc_mask_next_bit << tf->tsc_lsb_truncate;
- if(t) {
- t->start_freq = ltt_get_uint64(LTT_GET_BO(tf),
- &vheader->start_freq);
- t->freq_scale = ltt_get_uint32(LTT_GET_BO(tf),
- &vheader->freq_scale);
- if(father_trace) {
- t->start_freq = father_trace->start_freq;
- t->freq_scale = father_trace->freq_scale;
- }
- else {
- father_trace = t;
- }
- 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.tv_sec = ltt_get_uint64(LTT_GET_BO(tf),
- &vheader->start_time_sec);
- t->start_time.tv_nsec = ltt_get_uint64(LTT_GET_BO(tf),
- &vheader->start_time_usec);
- t->start_time.tv_nsec *= 1000; /* microsec to nanosec */
-
- t->start_time_from_tsc = ltt_time_from_uint64(
- (double)t->start_tsc
- * (1000000000.0 / tf->trace->freq_scale)
- / (double)t->start_freq);
- }
- }
- 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;
-}
-
-
-
-/*****************************************************************************
- *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
- * tf : the tracefile structure
- *Return value
- * : 0 for success, -1 otherwise.
- ****************************************************************************/
-
-static gint ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf)
-{
- struct stat lTDFStat; /* Trace data file status */
- struct ltt_block_start_header *header;
- int page_size = getpagesize();
-
- //open the file
- tf->long_name = g_quark_from_string(fileName);
- tf->trace = t;
- tf->fd = open(fileName, O_RDONLY);
- if(tf->fd < 0){
- g_warning("Unable to open input data file %s\n", fileName);
- 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);
- goto close_file;
- }
-
- // Is the file large enough to contain a trace
- 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);
- 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( ( (gulong)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->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(map_block(tf,0)) {
- perror("Cannot map block for tracefile");
- goto close_file;
- }
-
- return 0;
-
- /* 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;
-}
-
-#if 0
-/*****************************************************************************
- *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;
-}
-#endif //0
-
-/*****************************************************************************
- *Function name
- * ltt_tracefile_close: close a trace file,
- *Input params
- * t : tracefile which will be closed
- ****************************************************************************/
-
-static void ltt_tracefile_close(LttTracefile *t)
-{
- 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);
-}
-
-
-/*****************************************************************************
- *Get system information
- ****************************************************************************/
-#if 0
-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;
-}
-#endif //0
-
-/*****************************************************************************
- *The following functions get facility/tracefile information
- ****************************************************************************/
-#if 0
-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;
-}
-#endif //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;
-}
-
-/* Search for something like : .*_.*
- *
- * The left side is the name, the right side is the number.
- */
-
-static int get_tracefile_name_number(gchar *raw_name,
- GQuark *name,
- guint *num,
- gulong *tid,
- gulong *pgid,
- guint64 *creation)
-{
- guint raw_name_len = strlen(raw_name);
- gchar char_name[PATH_MAX];
- int i;
- int underscore_pos;
- long int cpu_num;
- gchar *endptr;
- gchar *tmpptr;
-
- for(i=raw_name_len-1;i>=0;i--) {
- if(raw_name[i] == '_') break;
- }
- if(i==-1) { /* Either not found or name length is 0 */
- /* This is a userspace tracefile */
- strncpy(char_name, raw_name, raw_name_len);
- char_name[raw_name_len] = '\0';
- *name = g_quark_from_string(char_name);
- *num = 0; /* unknown cpu */
- for(i=0;i<raw_name_len;i++) {
- if(raw_name[i] == '/') {
- break;
- }
- }
- i++;
- for(;i<raw_name_len;i++) {
- if(raw_name[i] == '/') {
- break;
- }
- }
- i++;
- for(;i<raw_name_len;i++) {
- if(raw_name[i] == '-') {
- break;
- }
- }
- if(i == raw_name_len) return -1;
- i++;
- tmpptr = &raw_name[i];
- for(;i<raw_name_len;i++) {
- if(raw_name[i] == '.') {
- raw_name[i] = ' ';
- break;
- }
- }
- *tid = strtoul(tmpptr, &endptr, 10);
- if(endptr == tmpptr)
- return -1; /* No digit */
- if(*tid == ULONG_MAX)
- return -1; /* underflow / overflow */
- i++;
- tmpptr = &raw_name[i];
- for(;i<raw_name_len;i++) {
- if(raw_name[i] == '.') {
- raw_name[i] = ' ';
- break;
- }
- }
- *pgid = strtoul(tmpptr, &endptr, 10);
- if(endptr == tmpptr)
- return -1; /* No digit */
- if(*pgid == ULONG_MAX)
- return -1; /* underflow / overflow */
- i++;
- tmpptr = &raw_name[i];
- *creation = strtoull(tmpptr, &endptr, 10);
- if(endptr == tmpptr)
- return -1; /* No digit */
- if(*creation == G_MAXUINT64)
- return -1; /* underflow / overflow */
- } else {
- underscore_pos = i;
-
- cpu_num = strtol(raw_name+underscore_pos+1, &endptr, 10);
-
- if(endptr == raw_name+underscore_pos+1)
- return -1; /* No digit */
- if(cpu_num == LONG_MIN || cpu_num == LONG_MAX)
- return -1; /* underflow / overflow */
-
- strncpy(char_name, raw_name, underscore_pos);
- char_name[underscore_pos] = '\0';
-
- *name = g_quark_from_string(char_name);
- *num = cpu_num;
- }
-
-
- return 0;
-}
-
-
-GData **ltt_trace_get_tracefiles_groups(LttTrace *trace)
-{
- return &trace->tracefiles;
-}
-
-
-void compute_tracefile_group(GQuark key_id,
- GArray *group,
- struct compute_tracefile_group_args *args)
-{
- int i;
- LttTracefile *tf;
-
- for(i=0; i<group->len; i++) {
- tf = &g_array_index (group, LttTracefile, i);
- if(tf->cpu_online)
- args->func(tf, args->func_args);
- }
-}
-
-
-static void ltt_tracefile_group_destroy(gpointer data)
-{
- GArray *group = (GArray *)data;
- int i;
- LttTracefile *tf;
-
- for(i=0; i<group->len; i++) {
- tf = &g_array_index (group, LttTracefile, i);
- if(tf->cpu_online)
- ltt_tracefile_close(tf);
- }
- g_array_free(group, TRUE);
-}
-
-static gboolean ltt_tracefile_group_has_cpu_online(gpointer data)
-{
- GArray *group = (GArray *)data;
- int i;
- LttTracefile *tf;
-
- for(i=0; i<group->len; i++) {
- tf = &g_array_index (group, LttTracefile, i);
- if(tf->cpu_online)
- return 1;
- }
- return 0;
-}
-
-
-/* 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 sit.
- */
-
-static int open_tracefiles(LttTrace *trace, gchar *root_path, gchar *relative_path)
-{
- 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;
- }
-
- 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;
- gulong tid, pgid;
- guint64 creation;
- GArray *group;
- num = 0;
- tid = pgid = 0;
- creation = 0;
- if(get_tracefile_name_number(rel_path, &name, &num, &tid, &pgid, &creation))
- continue; /* invalid name */
-
- g_debug("Opening file.\n");
- if(ltt_tracefile_open(trace, path, &tmp_tf)) {
- g_info("Error opening tracefile %s", path);
-
- continue; /* error opening the tracefile : bad magic number ? */
- }
-
- 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;
- tmp_tf.tid = tid;
- tmp_tf.pgid = pgid;
- tmp_tf.creation = creation;
- if(tmp_tf.name == g_quark_from_string("/compact")
- || tmp_tf.name == g_quark_from_string("/flight-compact"))
- tmp_tf.compact = 1;
- else
- tmp_tf.compact = 0;
- 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);
- }
-
- /* 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;
- g_array_index (group, LttTracefile, num).event.tracefile =
- &g_array_index (group, LttTracefile, num);
- }
- }
-
- closedir(dir);
-
- return 0;
-}
-
-
-/* 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)
-{
- 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.event_id >= MARKER_CORE_IDS) {
- /* Should only contain core facility */
- g_warning("Error in processing facility file %s, "
- "should not contain event id %u.", g_quark_to_string(tf->name),
- tf->event.event_id);
- err = EPERM;
- goto event_id_error;
- } else {
-
- char *pos;
- const char *marker_name, *format;
- uint16_t id;
- guint8 int_size, long_size, pointer_size, size_t_size, alignment;
-
- // FIXME align
- switch((enum marker_id)tf->event.event_id) {
- case MARKER_ID_SET_MARKER_ID:
- marker_name = pos = tf->event.data;
- g_debug("Doing MARKER_ID_SET_MARKER_ID of marker %s", marker_name);
- pos += strlen(marker_name) + 1;
- //remove genevent compatibility
- //pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment);
- pos += ltt_align((size_t)pos, sizeof(uint16_t), tf->alignment);
- id = ltt_get_uint16(LTT_GET_BO(tf), pos);
- g_debug("In MARKER_ID_SET_MARKER_ID of marker %s id %hu",
- marker_name, id);
- pos += sizeof(guint16);
- int_size = *(guint8*)pos;
- pos += sizeof(guint8);
- long_size = *(guint8*)pos;
- pos += sizeof(guint8);
- pointer_size = *(guint8*)pos;
- pos += sizeof(guint8);
- size_t_size = *(guint8*)pos;
- pos += sizeof(guint8);
- alignment = *(guint8*)pos;
- pos += sizeof(guint8);
- marker_id_event(tf->trace, g_quark_from_string(marker_name),
- id, int_size, long_size,
- pointer_size, size_t_size, alignment);
- break;
- case MARKER_ID_SET_MARKER_FORMAT:
- marker_name = pos = tf->event.data;
- g_debug("Doing MARKER_ID_SET_MARKER_FORMAT of marker %s",
- marker_name);
- pos += strlen(marker_name) + 1;
- //break genevent.
- //pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment);
- format = pos;
- pos += strlen(format) + 1;
- //break genevent
- //pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment);
- marker_format_event(tf->trace, g_quark_from_string(marker_name),
- format);
- /* get information from dictionnary TODO */
- break;
- case MARKER_ID_HEARTBEAT_32:
- case MARKER_ID_HEARTBEAT_64:
- break;
- default:
- g_warning("Error in processing facility file %s, "
- "unknown event id %hhu.",
- g_quark_to_string(tf->name),
- tf->event.event_id);
- err = EPERM;
- goto event_id_error;
- }
- }
- }
- return 0;
-
- /* Error handling */
-event_id_error:
-update_error:
-seek_error:
- g_warning("An error occured in facility tracefile parsing");
- return err;
-}
-
-/*
- * Open a trace and return its LttTrace handle.
- *
- * pathname must be the directory of the trace
- */
-
-LttTrace *ltt_trace_open(const gchar *pathname)
-{
- 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;
- 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);
-
- 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;
- }
- }
- }
- closedir(dir);
-
- if(!control_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;
- }
-
- /* 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;
- }
-
- /* 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;
-
- ret = allocate_marker_data(t);
- if (ret)
- g_error("Error in allocating marker data");
-
- for(i=0; i<group->len; i++) {
- tf = &g_array_index (group, LttTracefile, i);
- if (tf->cpu_online)
- if(ltt_process_facility_tracefile(tf))
- goto facilities_error;
- }
-
- return t;
-
- /* Error handling */
-facilities_error:
- destroy_marker_data(t);
-find_error:
- g_datalist_clear(&t->tracefiles);
-open_error:
- g_free(t);
-alloc_error:
- return NULL;
-
-}
-
-/* Open another, completely independant, instance of a trace.
- *
- * A read on this new instance will read the first event of the trace.
- *
- * 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(g_quark_to_string(self->pathname));
-}
-
-/*
- * Close a trace
- */
-
-void ltt_trace_close(LttTrace *t)
-{
- g_datalist_clear(&t->tracefiles);
- g_free(t);
-}
-
-
-/*****************************************************************************
- * Get the start time and end time of the trace
- ****************************************************************************/
-
-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; i<group->len; 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;
- }
- }
-}
-
-/* return the start and end time of a trace */
-
-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);
-
- if(start != NULL) *start = min_start;
- if(end != NULL) *end = max_end;
-
-}
-
-
-/* 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;
- unsigned int block_num, high, low;
-
- /* 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;
- }
- 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;
- }
- }
-
-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 a position indicated by an LttEventPosition
- */
-
-int ltt_tracefile_seek_position(LttTracefile *tf, const LttEventPosition *ep)
-{
- int err;
-
- if(ep->tracefile != tf) {
- goto fail;
- }
-
- err = map_block(tf, ep->block);
- if(unlikely(err)) {
- g_error("Can not map block");
- goto fail;
- }
-
- tf->event.offset = ep->offset;
-
- /* Put back the event real tsc */
- tf->event.tsc = ep->tsc;
- tf->buffer.tsc = ep->tsc;
-
- err = ltt_tracefile_read_update_event(tf);
- if(err) goto fail;
-
- /* deactivate this, as it does nothing for now
- 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;
-}
-
-/* Given a TSC value, return the LttTime (seconds,nanoseconds) it
- * corresponds to.
- */
-
-LttTime ltt_interpolate_time_from_tsc(LttTracefile *tf, guint64 tsc)
-{
- LttTime time;
-
- if(tsc > tf->trace->start_tsc) {
- time = ltt_time_from_uint64(
- (double)(tsc - tf->trace->start_tsc)
- * (1000000000.0 / tf->trace->freq_scale)
- / (double)tf->trace->start_freq);
- time = ltt_time_add(tf->trace->start_time_from_tsc, time);
- } else {
- time = ltt_time_from_uint64(
- (double)(tf->trace->start_tsc - tsc)
- * (1000000000.0 / tf->trace->freq_scale)
- / (double)tf->trace->start_freq);
- time = ltt_time_sub(tf->trace->start_time_from_tsc, time);
- }
- return time;
-}
-
-/* Calculate the real event time based on the buffer boundaries */
-LttTime ltt_interpolate_time(LttTracefile *tf, LttEvent *event)
-{
- return ltt_interpolate_time_from_tsc(tf, tf->buffer.tsc);
-}
-
-
-/* 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 next event in the tracefile
- *Input params
- * t : tracefile
- *Return value
- *
- * 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.
- ****************************************************************************/
-
-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;
-
- /* deactivate this, as it does nothing for now
- err = ltt_tracefile_read_op(tf);
- if(err) return err;
- */
-
- return 0;
-}
-
-int ltt_tracefile_read_seek(LttTracefile *tf)
-{
- int err;
-
- /* 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;
- }
-
- /* 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 ! */
- }
-
- return 0;
-}
-
-/* do an operation when reading a new event */
-
-/* This function does nothing for now */
-#if 0
-int ltt_tracefile_read_op(LttTracefile *tf)
-{
- LttEvent *event;
-
- event = &tf->event;
-
- /* do event specific operation */
-
- /* nothing */
-
- return 0;
-}
-#endif
-
-static void print_debug_event_header(LttEvent *ev, void *start_pos, void *end_pos)
-{
- unsigned int offset = 0;
- int i, j;
-
- g_printf("Event header (tracefile %s offset %llx):\n",
- g_quark_to_string(ev->tracefile->long_name),
- ((uint64_t)ev->tracefile->buffer.index * ev->tracefile->buf_size)
- + (long)start_pos - (long)ev->tracefile->buffer.head);
-
- while (offset < (long)end_pos - (long)start_pos) {
- g_printf("%8lx", (long)start_pos - (long)ev->tracefile->buffer.head + offset);
- g_printf(" ");
-
- for (i = 0; i < 4 ; i++) {
- for (j = 0; j < 4; j++) {
- if (offset + ((i * 4) + j) <
- (long)end_pos - (long)start_pos)
- g_printf("%02hhX",
- ((char*)start_pos)[offset + ((i * 4) + j)]);
- else
- g_printf(" ");
- g_printf(" ");
- }
- if (i < 4)
- g_printf(" ");
- }
- offset+=16;
- g_printf("\n");
- }
-}
-
-
-/* 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)
-{
- void * pos;
- LttEvent *event;
- void *pos_aligned;
-
- event = &tf->event;
- pos = tf->buffer.head + event->offset;
-
- /* Read event header */
-
- /* Align the head */
- if(!tf->compact)
- pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment);
- else {
- g_assert(tf->has_heartbeat);
- pos += ltt_align((size_t)pos, sizeof(uint32_t), tf->alignment);
- }
- pos_aligned = pos;
-
- if(tf->has_heartbeat) {
- event->timestamp = ltt_get_uint32(LTT_GET_BO(tf),
- pos);
- if(!tf->compact) {
- /* 32 bits -> 64 bits tsc */
- /* note : still works for seek and non seek cases. */
- if(event->timestamp < (0xFFFFFFFFULL&tf->buffer.tsc)) {
- tf->buffer.tsc = ((tf->buffer.tsc&0xFFFFFFFF00000000ULL)
- + 0x100000000ULL)
- | (guint64)event->timestamp;
- event->tsc = tf->buffer.tsc;
- } else {
- /* no overflow */
- tf->buffer.tsc = (tf->buffer.tsc&0xFFFFFFFF00000000ULL)
- | (guint64)event->timestamp;
- event->tsc = tf->buffer.tsc;
- event->compact_data = 0;
- }
- } else {
- /* Compact header */
- /* We keep the LSB of the previous timestamp, to make sure
- * we never go back */
- event->event_id = event->timestamp >> tf->tscbits;
- event->event_id = event->event_id & ((1 << tf->compact_event_bits) - 1);
- event->compact_data = event->timestamp >>
- (tf->compact_event_bits + tf->tscbits);
- //printf("tsc bits %u, ev bits %u init data %u\n",
- // tf->tscbits, tf->trace->compact_event_bits, event->compact_data);
- /* Put the compact data back in original endianness */
- event->compact_data = ltt_get_uint32(LTT_GET_BO(tf), &event->compact_data);
- event->event_size = 0xFFFF;
- //printf("Found compact event %d\n", event->event_id);
- //printf("Compact data %d\n", event->compact_data);
- event->timestamp = event->timestamp << tf->tsc_lsb_truncate;
- event->timestamp = event->timestamp & tf->tsc_mask;
- //printf("timestamp 0x%lX\n", event->timestamp);
- //printf("mask 0x%llX\n", tf->tsc_mask);
- //printf("mask_next 0x%llX\n", tf->tsc_mask_next_bit);
- //printf("previous tsc 0x%llX\n", tf->buffer.tsc);
- //printf("previous tsc&mask 0x%llX\n", tf->tsc_mask&tf->buffer.tsc);
- //printf("previous tsc&(~mask) 0x%llX\n", tf->buffer.tsc&(~tf->tsc_mask));
- if(event->timestamp < (tf->tsc_mask&tf->buffer.tsc)) {
- //printf("wrap\n");
- tf->buffer.tsc = ((tf->buffer.tsc&(~tf->tsc_mask))
- + tf->tsc_mask_next_bit)
- | (guint64)event->timestamp;
- event->tsc = tf->buffer.tsc;
- } else {
- //printf("no wrap\n");
- /* no overflow */
- tf->buffer.tsc = (tf->buffer.tsc&(~tf->tsc_mask))
- | (guint64)event->timestamp;
- event->tsc = tf->buffer.tsc;
- }
- //printf("current tsc 0x%llX\n", tf->buffer.tsc);
- }
- pos += sizeof(guint32);
- } else {
- event->tsc = ltt_get_uint64(LTT_GET_BO(tf), pos);
- tf->buffer.tsc = event->tsc;
- event->compact_data = 0;
- pos += sizeof(guint64);
- }
- event->event_time = ltt_interpolate_time(tf, event);
-
- if(!tf->compact) {
- event->event_id = ltt_get_uint16(LTT_GET_BO(tf), pos);
- pos += sizeof(guint16);
-
- event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos);
- pos += sizeof(guint16);
- } else {
- /* Compact event */
- event->event_size = 0xFFFF;
- }
-
- if (a_event_debug)
- print_debug_event_header(event, pos_aligned, pos);
-
- /* Align the head */
- if(!tf->compact)
- pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment);
-
- event->data = pos;
-
- /* get the data size and update the event fields with the current
- * information. Also update the time if a heartbeat_full event is found. */
- ltt_update_event_size(tf);
-
- return 0;
-}
-
-
-/****************************************************************************
- *Function name
- * map_block : map 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
- ****************************************************************************/
-
-static gint map_block(LttTracefile * tf, guint block_num)
-{
- int page_size = getpagesize();
- struct ltt_block_start_header *header;
-
- g_assert(block_num < tf->num_blocks);
-
- 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);
- }
- }
-
-
- /* 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( ( (gulong)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned.
-
-
- tf->buffer.index = block_num;
-
- header = (struct ltt_block_start_header*)tf->buffer.head;
-
-#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);
- if(tf->buffer.begin.freq == 0)
- tf->buffer.begin.freq = tf->trace->start_freq;
-
- tf->buffer.begin.timestamp = ltt_interpolate_time_from_tsc(tf,
- tf->buffer.begin.cycle_count);
-#if 0
- ltt_time_add(
- ltt_time_from_uint64(
- (double)(tf->buffer.begin.cycle_count
- - tf->trace->start_tsc) * 1000000.0
- / (double)tf->trace->start_freq),
- tf->trace->start_time_from_tsc);
-#endif //0
-#if 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);
- if(tf->buffer.end.freq == 0)
- tf->buffer.end.freq = tf->trace->start_freq;
-
- tf->buffer.lost_size = ltt_get_uint32(LTT_GET_BO(tf),
- &header->lost_size);
- tf->buffer.end.timestamp = ltt_interpolate_time_from_tsc(tf,
- tf->buffer.end.cycle_count);
-#if 0
- ltt_time_add(
- ltt_time_from_uint64(
- (double)(tf->buffer.end.cycle_count
- - tf->trace->start_tsc) * 1000000.0
- / (double)tf->trace->start_freq),
- tf->trace->start_time_from_tsc);
-#endif //0
- 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;
-
-map_error:
- return -errno;
-
-}
-
-static void print_debug_event_data(LttEvent *ev)
-{
- unsigned int offset = 0;
- int i, j;
-
- if (!max(ev->event_size, ev->data_size))
- return;
-
- g_printf("Event data (tracefile %s offset %llx):\n",
- g_quark_to_string(ev->tracefile->long_name),
- ((uint64_t)ev->tracefile->buffer.index * ev->tracefile->buf_size)
- + (long)ev->data - (long)ev->tracefile->buffer.head);
-
- while (offset < max(ev->event_size, ev->data_size)) {
- g_printf("%8lx", (long)ev->data + offset
- - (long)ev->tracefile->buffer.head);
- g_printf(" ");
-
- for (i = 0; i < 4 ; i++) {
- for (j = 0; j < 4; j++) {
- if (offset + ((i * 4) + j) < max(ev->event_size, ev->data_size))
- g_printf("%02hhX", ((char*)ev->data)[offset + ((i * 4) + j)]);
- else
- g_printf(" ");
- g_printf(" ");
- }
- if (i < 4)
- g_printf(" ");
- }
-
- g_printf(" ");
-
- for (i = 0; i < 4; i++) {
- for (j = 0; j < 4; j++) {
- if (offset + ((i * 4) + j) < max(ev->event_size, ev->data_size)) {
- if (isprint(((char*)ev->data)[offset + ((i * 4) + j)]))
- g_printf("%c", ((char*)ev->data)[offset + ((i * 4) + j)]);
- else
- g_printf(".");
- } else
- g_printf(" ");
- }
- }
- offset+=16;
- g_printf("\n");
- }
-}
-
-/* It will update the fields offsets too */
-void ltt_update_event_size(LttTracefile *tf)
-{
- off_t size = 0;
- char *tscdata;
- struct marker_info *info;
-
- switch((enum marker_id)tf->event.event_id) {
- case MARKER_ID_SET_MARKER_ID:
- size = strlen((char*)tf->event.data) + 1;
- g_debug("marker %s id set", (char*)tf->event.data);
- size += ltt_align(size, sizeof(guint16), tf->alignment);
- size += sizeof(guint16);
- size += sizeof(guint8);
- size += sizeof(guint8);
- size += sizeof(guint8);
- size += sizeof(guint8);
- size += sizeof(guint8);
- break;
- case MARKER_ID_SET_MARKER_FORMAT:
- g_debug("marker %s format set", (char*)tf->event.data);
- size = strlen((char*)tf->event.data) + 1;
- size += strlen((char*)tf->event.data + size) + 1;
- break;
- case MARKER_ID_HEARTBEAT_32:
- g_debug("Update Event heartbeat 32 bits");
- break;
- case MARKER_ID_HEARTBEAT_64:
- g_debug("Update Event heartbeat 64 bits");
- tscdata = (char*)(tf->event.data);
- tf->event.tsc = ltt_get_uint64(LTT_GET_BO(tf), tscdata);
- tf->buffer.tsc = tf->event.tsc;
- tf->event.event_time = ltt_interpolate_time(tf, &tf->event);
- size = ltt_align(size, sizeof(guint64), tf->alignment);
- size += sizeof(guint64);
- break;
- }
-
- info = marker_get_info_from_id(tf->trace, tf->event.event_id);
-
- if (tf->event.event_id >= MARKER_CORE_IDS)
- g_assert(info != NULL);
-
- /* Do not update field offsets of core markers when initially reading the
- * facility tracefile when the infos about these markers do not exist yet.
- */
- if (likely(info && info->fields)) {
- if (info->size != -1)
- size = info->size;
- else
- size = marker_update_fields_offsets(marker_get_info_from_id(tf->trace,
- tf->event.event_id), tf->event.data);
- }
-
- tf->event.data_size = size;
-
- /* Check consistency between kernel and LTTV structure sizes */
- if(tf->event.event_size == 0xFFFF) {
- /* Event size too big to fit in the event size field */
- tf->event.event_size = tf->event.data_size;
- }
-
- if (a_event_debug)
- print_debug_event_data(&tf->event);
-
- /* Having a marker load or marker format event out of the facilities
- * tracefiles is a serious bug. */
- switch((enum marker_id)tf->event.event_id) {
- case MARKER_ID_SET_MARKER_ID:
- case MARKER_ID_SET_MARKER_FORMAT:
- if (tf->name != g_quark_from_string("/control/facilities"))
- g_error("Trace inconsistency : metadata event found in data "
- "tracefile %s", g_quark_to_string(tf->long_name));
- }
-
- if (tf->event.data_size != tf->event.event_size) {
- struct marker_info *info = marker_get_info_from_id(tf->trace,
- tf->event.event_id);
- g_error("Kernel/LTTV event size differs for event %s: kernel %u, LTTV %u",
- g_quark_to_string(info->name),
- tf->event.event_size, tf->event.data_size);
- exit(-1);
- }
-}
-
-
-/* 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 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;
-
- if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) {
- ret = ERANGE;
- }
- goto found;
- }
-
-
- 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);
-
-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
- * 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;
-}
-
-static guint64 cycles_2_ns(LttTracefile *tf, guint64 cycles)
-{
- 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;
-
- if(likely(rootFld))
- rootFld->field_size = getFieldtypeSize(tf, evT->facility,
- evT, 0,0,rootFld, evD);
-}
-#endif //0
-#if 0
-/*****************************************************************************
- *Function name
- * set_fields_offsets : set the precomputable offset of the fields
- *Input params
- * tracefile : opened trace file
- * event_type : the event type
- ****************************************************************************/
-
-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;
-
- if(likely(field))
- preset_field_type_size(tf, event_type, 0, 0,
- &fixed_root, &fixed_parent,
- field);
-
-}
-#endif //0
-
-
-/*****************************************************************************
- *Function name
- * get_alignment : Get the alignment needed for a field.
- *Input params
- * field : field
- *
- * returns : The size on which it must be aligned.
- *
- ****************************************************************************/
-#if 0
-off_t get_alignment(LttField *field)
-{
- LttType *type = &field->field_type;
-
- switch(type->type_class) {
- case LTT_INT_FIXED:
- case LTT_UINT_FIXED:
- case LTT_POINTER:
- case LTT_CHAR:
- case LTT_UCHAR:
- case LTT_SHORT:
- case LTT_USHORT:
- case LTT_INT:
- case LTT_UINT:
- case LTT_LONG:
- case LTT_ULONG:
- case LTT_SIZE_T:
- case LTT_SSIZE_T:
- case LTT_OFF_T:
- case LTT_FLOAT:
- case LTT_ENUM:
- /* Align offset on type size */
- g_assert(field->field_size != 0);
- return field->field_size;
- break;
- case LTT_STRING:
- return 1;
- break;
- case LTT_ARRAY:
- g_assert(type->fields->len == 1);
- {
- LttField *child = &g_array_index(type->fields, LttField, 0);
- return get_alignment(child);
- }
- break;
- case LTT_SEQUENCE:
- g_assert(type->fields->len == 2);
- {
- off_t localign = 1;
- LttField *child = &g_array_index(type->fields, LttField, 0);
-
- localign = max(localign, get_alignment(child));
-
- child = &g_array_index(type->fields, LttField, 1);
- localign = max(localign, get_alignment(child));
-
- return localign;
- }
- break;
- case LTT_STRUCT:
- case LTT_UNION:
- {
- guint i;
- off_t localign = 1;
-
- for(i=0; i<type->fields->len; i++) {
- LttField *child = &g_array_index(type->fields, LttField, i);
- localign = max(localign, get_alignment(child));
- }
- return localign;
- }
- break;
- case LTT_NONE:
- default:
- g_error("get_alignment : unknown type");
- return -1;
- }
-}
-
-#endif //0
-
-/*****************************************************************************
- *Function name
- * field_compute_static_size : Determine the size of fields known by their
- * sole definition. Unions, arrays and struct sizes might be known, but
- * the parser does not give that information.
- *Input params
- * tf : tracefile
- * field : field
- *
- ****************************************************************************/
-#if 0
-void field_compute_static_size(LttFacility *fac, LttField *field)
-{
- LttType *type = &field->field_type;
-
- switch(type->type_class) {
- case LTT_INT_FIXED:
- case LTT_UINT_FIXED:
- case LTT_POINTER:
- case LTT_CHAR:
- case LTT_UCHAR:
- case LTT_SHORT:
- case LTT_USHORT:
- case LTT_INT:
- case LTT_UINT:
- case LTT_LONG:
- case LTT_ULONG:
- case LTT_SIZE_T:
- case LTT_SSIZE_T:
- case LTT_OFF_T:
- case LTT_FLOAT:
- case LTT_ENUM:
- case LTT_STRING:
- /* nothing to do */
- break;
- case LTT_ARRAY:
- /* note this : array type size is the number of elements in the array,
- * while array field size of the length of the array in bytes */
- g_assert(type->fields->len == 1);
- {
- LttField *child = &g_array_index(type->fields, LttField, 0);
- field_compute_static_size(fac, child);
-
- if(child->field_size != 0) {
- field->field_size = type->size * child->field_size;
- field->dynamic_offsets = g_array_sized_new(FALSE, TRUE,
- sizeof(off_t), type->size);
- } else {
- field->field_size = 0;
- }
- }
- break;
- case LTT_SEQUENCE:
- g_assert(type->fields->len == 2);
- {
- off_t local_offset = 0;
- LttField *child = &g_array_index(type->fields, LttField, 1);
- field_compute_static_size(fac, child);
- field->field_size = 0;
- type->size = 0;
- if(child->field_size != 0) {
- field->dynamic_offsets = g_array_sized_new(FALSE, TRUE,
- sizeof(off_t), SEQUENCE_AVG_ELEMENTS);
- }
- }
- break;
- case LTT_STRUCT:
- case LTT_UNION:
- {
- guint i;
- for(i=0;i<type->fields->len;i++) {
- LttField *child = &g_array_index(type->fields, LttField, i);
- field_compute_static_size(fac, child);
- if(child->field_size != 0) {
- type->size += ltt_align(type->size, get_alignment(child),
- fac->alignment);
- type->size += child->field_size;
- } else {
- /* As soon as we find a child with variable size, we have
- * a variable size */
- type->size = 0;
- break;
- }
- }
- field->field_size = type->size;
- }
- break;
- default:
- g_error("field_static_size : unknown type");
- }
-
-}
-#endif //0
-
-
-/*****************************************************************************
- *Function name
- * precompute_fields_offsets : set the precomputable offset of the fields
- *Input params
- * fac : facility
- * field : the field
- * offset : pointer to the current offset, must be incremented
- *
- * return : 1 : found a variable length field, stop the processing.
- * 0 otherwise.
- ****************************************************************************/
-
-#if 0
-gint precompute_fields_offsets(LttFacility *fac, LttField *field, off_t *offset, gint is_compact)
-{
- LttType *type = &field->field_type;
-
- if(unlikely(is_compact)) {
- g_assert(field->field_size != 0);
- /* FIXME THIS IS A HUUUUUGE hack :
- * offset is between the compact_data field in struct LttEvent
- * and the address of the field root in the memory map.
- * ark. Both will stay at the same addresses while the event
- * is readable, so it's ok.
- */
- field->offset_root = 0;
- field->fixed_root = FIELD_FIXED;
- return 0;
- }
-
- switch(type->type_class) {
- case LTT_INT_FIXED:
- case LTT_UINT_FIXED:
- case LTT_POINTER:
- case LTT_CHAR:
- case LTT_UCHAR:
- case LTT_SHORT:
- case LTT_USHORT:
- case LTT_INT:
- case LTT_UINT:
- case LTT_LONG:
- case LTT_ULONG:
- case LTT_SIZE_T:
- case LTT_SSIZE_T:
- case LTT_OFF_T:
- case LTT_FLOAT:
- case LTT_ENUM:
- g_assert(field->field_size != 0);
- /* Align offset on type size */
- *offset += ltt_align(*offset, get_alignment(field),
- fac->alignment);
- /* remember offset */
- field->offset_root = *offset;
- field->fixed_root = FIELD_FIXED;
- /* Increment offset */
- *offset += field->field_size;
- return 0;
- break;
- case LTT_STRING:
- field->offset_root = *offset;
- field->fixed_root = FIELD_FIXED;
- return 1;
- break;
- case LTT_ARRAY:
- g_assert(type->fields->len == 1);
- {
- LttField *child = &g_array_index(type->fields, LttField, 0);
-
- *offset += ltt_align(*offset, get_alignment(field),
- fac->alignment);
-
- /* remember offset */
- field->offset_root = *offset;
- field->array_offset = *offset;
- field->fixed_root = FIELD_FIXED;
-
- /* Let the child be variable */
- //precompute_fields_offsets(tf, child, offset);
-
- if(field->field_size != 0) {
- /* Increment offset */
- /* field_size is the array size in bytes */
- *offset += field->field_size;
- return 0;
- } else {
- return 1;
- }
- }
- break;
- case LTT_SEQUENCE:
- g_assert(type->fields->len == 2);
- {
- LttField *child;
- guint ret;
-
- *offset += ltt_align(*offset, get_alignment(field),
- fac->alignment);
-
- /* remember offset */
- field->offset_root = *offset;
- field->fixed_root = FIELD_FIXED;
-
- child = &g_array_index(type->fields, LttField, 0);
- ret = precompute_fields_offsets(fac, child, offset, is_compact);
- g_assert(ret == 0); /* Seq len cannot have variable len */
-
- child = &g_array_index(type->fields, LttField, 1);
- *offset += ltt_align(*offset, get_alignment(child),
- fac->alignment);
- field->array_offset = *offset;
- /* Let the child be variable. */
- //ret = precompute_fields_offsets(fac, child, offset);
-
- /* Cannot precompute fields offsets of sequence members, and has
- * variable length. */
- return 1;
- }
- break;
- case LTT_STRUCT:
- {
- LttField *child;
- guint i;
- gint ret=0;
-
- *offset += ltt_align(*offset, get_alignment(field),
- fac->alignment);
- /* remember offset */
- field->offset_root = *offset;
- field->fixed_root = FIELD_FIXED;
-
- for(i=0; i< type->fields->len; i++) {
- child = &g_array_index(type->fields, LttField, i);
- ret = precompute_fields_offsets(fac, child, offset, is_compact);
-
- if(ret) break;
- }
- return ret;
- }
- break;
- case LTT_UNION:
- {
- LttField *child;
- guint i;
- gint ret=0;
-
- *offset += ltt_align(*offset, get_alignment(field),
- fac->alignment);
- /* remember offset */
- field->offset_root = *offset;
- field->fixed_root = FIELD_FIXED;
-
- for(i=0; i< type->fields->len; i++) {
- *offset = field->offset_root;
- child = &g_array_index(type->fields, LttField, i);
- ret = precompute_fields_offsets(fac, child, offset, is_compact);
-
- if(ret) break;
- }
- *offset = field->offset_root + field->field_size;
- return ret;
- }
-
- break;
- case LTT_NONE:
- default:
- g_error("precompute_fields_offsets : unknown type");
- return 1;
- }
-
-}
-
-#endif //0
-
-#if 0
-/*****************************************************************************
- *Function name
- * precompute_offsets : set the precomputable offset of an event type
- *Input params
- * tf : tracefile
- * event : event type
- *
- ****************************************************************************/
-void precompute_offsets(LttFacility *fac, LttEventType *event)
-{
- guint i;
- off_t offset = 0;
- gint ret;
-
- /* First, compute the size of fixed size fields. Will determine size for
- * arrays, struct and unions, which is not done by the parser */
- for(i=0; i<event->fields->len; i++) {
- LttField *field = &g_array_index(event->fields, LttField, i);
- field_compute_static_size(fac, field);
- }
-
- /* Precompute all known offsets */
- for(i=0; i<event->fields->len; i++) {
- LttField *field = &g_array_index(event->fields, LttField, i);
- if(event->has_compact_data && i == 0)
- ret = precompute_fields_offsets(fac, field, &offset, 1);
- else
- ret = precompute_fields_offsets(fac, field, &offset, 0);
- if(ret) break;
- }
-}
-#endif //0
-
-
-
-/*****************************************************************************
- *Function name
- * preset_field_type_size : set the fixed sizes of the field type
- *Input params
- * tf : tracefile
- * 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
- ****************************************************************************/
-
-
-
-// preset the fixed size offsets. Calculate them just like genevent-new : an
-// increment of a *to value that represents the offset from the start of the
-// event data.
-// The preset information is : offsets up to (and including) the first element
-// of variable size. All subsequent fields must be flagged "VARIABLE OFFSET".
-#if 0
-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)
-{
- enum field_status local_fixed_root, local_fixed_parent;
- guint i;
- LttType *type;
-
- g_assert(field->fixed_root == FIELD_UNKNOWN);
- g_assert(field->fixed_parent == FIELD_UNKNOWN);
- g_assert(field->fixed_size == FIELD_UNKNOWN);
-
- type = field->field_type;
-
- field->fixed_root = *fixed_root;
- if(field->fixed_root == FIELD_FIXED)
- field->offset_root = offset_root;
- else
- field->offset_root = 0;
-
- 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_FIXED:
- case LTT_UINT_FIXED:
- case LTT_CHAR:
- case LTT_UCHAR:
- case LTT_SHORT:
- case LTT_USHORT:
- 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;i<type->element_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;i<type->element_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) {
- g_error("LTTV does not support variable size fields in unions.");
- /* This will stop the application. */
- *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;
- case LTT_NONE:
- g_error("unexpected type NONE");
- break;
- }
-
-}
-#endif //0
-
-/*****************************************************************************
- *Function name
- * check_fields_compatibility : Check for compatibility between two fields :
- * do they use the same inner structure ?
- *Input params
- * event_type1 : event type
- * event_type2 : event type
- * field1 : field
- * field2 : field
- *Returns : 0 if identical
- * 1 if not.
- ****************************************************************************/
-// this function checks for equality of field types. Therefore, it does not use
-// per se offsets. For instance, an aligned version of a structure is
-// compatible with an unaligned version of the same structure.
-#if 0
-gint check_fields_compatibility(LttEventType *event_type1,
- LttEventType *event_type2,
- LttField *field1, LttField *field2)
-{
- guint different = 0;
- 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;
- }
-
- type1 = &field1->field_type;
- type2 = &field2->field_type;
-
- if(type1->type_class != type2->type_class) {
- different = 1;
- goto end;
- }
- if(type1->network != type2->network) {
- different = 1;
- goto end;
- }
-
- switch(type1->type_class) {
- case LTT_INT_FIXED:
- case LTT_UINT_FIXED:
- case LTT_POINTER:
- case LTT_CHAR:
- case LTT_UCHAR:
- case LTT_SHORT:
- case LTT_USHORT:
- case LTT_INT:
- case LTT_UINT:
- case LTT_LONG:
- case LTT_ULONG:
- case LTT_SIZE_T:
- case LTT_SSIZE_T:
- case LTT_OFF_T:
- case LTT_FLOAT:
- case LTT_ENUM:
- if(field1->field_size != field2->field_size)
- different = 1;
- break;
- case LTT_STRING:
- break;
- case LTT_ARRAY:
- {
- LttField *child1 = &g_array_index(type1->fields, LttField, 0);
- LttField *child2 = &g_array_index(type2->fields, LttField, 0);
-
- if(type1->size != type2->size)
- different = 1;
- if(check_fields_compatibility(event_type1, event_type2, child1, child2))
- different = 1;
- }
- break;
- case LTT_SEQUENCE:
- {
- LttField *child1 = &g_array_index(type1->fields, LttField, 1);
- LttField *child2 = &g_array_index(type2->fields, LttField, 1);
-
- if(check_fields_compatibility(event_type1, event_type2, child1, child2))
- different = 1;
- }
- break;
- case LTT_STRUCT:
- case LTT_UNION:
- {
- LttField *child;
- guint i;
-
- if(type1->fields->len != type2->fields->len) {
- different = 1;
- goto end;
- }
-
- for(i=0; i< type1->fields->len; i++) {
- LttField *child1;
- LttField *child2;
- child1 = &g_array_index(type1->fields, LttField, i);
- child2 = &g_array_index(type2->fields, LttField, i);
- different = check_fields_compatibility(event_type1,
- event_type2, child1, child2);
-
- if(different) break;
- }
- }
- break;
- case LTT_NONE:
- default:
- g_error("check_fields_compatibility : unknown type");
- }
-
-end:
- return different;
-}
-#endif //0
-
-#if 0
-gint check_fields_compatibility(LttEventType *event_type1,
- LttEventType *event_type2,
- LttField *field1, LttField *field2)
-{
- 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_FIXED:
- case LTT_UINT_FIXED:
- case LTT_POINTER:
- case LTT_CHAR:
- case LTT_UCHAR:
- case LTT_SHORT:
- case LTT_USHORT:
- 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;i<type1->element_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;i<type1->element_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;i<type1->element_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;i<type1->element_number;i++) {
- if(check_fields_compatibility(event_type1, event_type2,
- field1->child[0], field2->child[0])) {
- different = 1;
- goto end;
- }
- }
- break;
- }
-end:
- return different;
-}
-#endif //0
-
-
-/*****************************************************************************
- *Function name
- * ltt_get_int : get an integer number
- *Input params
- * reverse_byte_order: must we reverse the byte order ?
- * size : the size of the integer
- * ptr : the data pointer
- *Return value
- * gint64 : a 64 bits integer
- ****************************************************************************/
-
-gint64 ltt_get_int(gboolean reverse_byte_order, gint size, void *data)
-{
- gint64 val;
-
- switch(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 val;
-}
-
-/*****************************************************************************
- *Function name
- * ltt_get_uint : get an unsigned integer number
- *Input params
- * 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
- ****************************************************************************/
-
-guint64 ltt_get_uint(gboolean reverse_byte_order, gint size, void *data)
-{
- guint64 val;
-
- 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;
- }
-
- return val;
-}
-
-
-/* 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 NTP corrected start time of the trace */
-LttTime ltt_trace_start_time(LttTrace *t)
-{
- return t->start_time;
-}
-
-/* get the monotonic start time of the trace */
-LttTime ltt_trace_start_time_monotonic(LttTrace *t)
-{
- return t->start_time_from_tsc;
-}
-
-static LttTracefile *ltt_tracefile_new()
-{
- LttTracefile *tf;
- tf = g_new(LttTracefile, 1);
- tf->event.tracefile = tf;
- return tf;
-}
-
-static void ltt_tracefile_destroy(LttTracefile *tf)
-{
- g_free(tf);
-}
-
-static void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src)
-{
- *dest = *src;
-}
-
-/* Before library loading... */
-
-static __attribute__((constructor)) void init(void)
-{
- LTT_FACILITY_NAME_HEARTBEAT = g_quark_from_string("heartbeat");
- LTT_EVENT_NAME_HEARTBEAT = g_quark_from_string("heartbeat");
- LTT_EVENT_NAME_HEARTBEAT_FULL = g_quark_from_string("heartbeat_full");
-
- LTT_TRACEFILE_NAME_FACILITIES = g_quark_from_string("/control/facilities");
-}
projects / lttv.git / blobdiff