#include <stdio.h>
#include <string.h>
+/* Comment :
+ * Mathieu Desnoyers
+ * usertrace is there only to be able to update the current CPU of the
+ * usertraces when there is a schedchange. it is a way to link the ProcessState
+ * to the associated usertrace. Link only created upon thread creation.
+ *
+ * The cpu id is necessary : it gives us back the current ProcessState when we
+ * are considering data from the usertrace.
+ */
+
#define PREALLOCATED_EXECUTION_STACK 10
/* Facilities Quarks */
static void lttv_state_free_process_table(GHashTable *processes);
+static void lttv_trace_states_read_raw(LttvTraceState *tcs, FILE *fp,
+ GPtrArray *quarktable);
void lttv_state_save(LttvTraceState *self, LttvAttribute *container)
{
g_free(data);
}
+#define MAX_STRING_LEN 4096
+
+static void
+state_load_saved_states(LttvTraceState *tcs)
+{
+ FILE *fp;
+ GPtrArray *quarktable;
+ char *trace_path;
+ char path[PATH_MAX];
+ guint count;
+ guint i;
+ tcs->has_precomputed_states = FALSE;
+ GQuark q;
+ gchar *string;
+ gint hdr;
+ gchar buf[MAX_STRING_LEN];
+ guint len;
+
+ trace_path = g_quark_to_string(ltt_trace_name(tcs->parent.t));
+ strncpy(path, trace_path, PATH_MAX-1);
+ count = strnlen(trace_path, PATH_MAX-1);
+ // quarktable : open, test
+ strncat(path, "/precomputed/quarktable", PATH_MAX-count-1);
+ fp = fopen(path, "r");
+ if(!fp) return;
+ quarktable = g_ptr_array_sized_new(4096);
+
+ /* Index 0 is null */
+ hdr = fgetc(fp);
+ if(hdr == EOF) return;
+ g_assert(hdr == HDR_QUARKS);
+ q = 1;
+ do {
+ hdr = fgetc(fp);
+ if(hdr == EOF) break;
+ g_assert(hdr == HDR_QUARK);
+ g_ptr_array_set_size(quarktable, q+1);
+ i=0;
+ while(1) {
+ fread(&buf[i], sizeof(gchar), 1, fp);
+ if(buf[i] == '\0' || feof(fp)) break;
+ i++;
+ }
+ len = strnlen(buf, MAX_STRING_LEN-1);
+ g_ptr_array_index (quarktable, q) = g_new(gchar, len+1);
+ strncpy(g_ptr_array_index (quarktable, q), buf, len+1);
+ q++;
+ } while(1);
+
+ fclose(fp);
+ // saved_states : open, test
+ strncpy(path, trace_path, PATH_MAX-1);
+ count = strnlen(trace_path, PATH_MAX-1);
+ strncat(path, "/precomputed/states", PATH_MAX-count-1);
+ fp = fopen(path, "r");
+ if(!fp) return;
+
+ hdr = fgetc(fp);
+ if(hdr != HDR_TRACE) goto end;
+
+ lttv_trace_states_read_raw(tcs, fp, quarktable);
+
+ tcs->has_precomputed_states = TRUE;
+
+end:
+ fclose(fp);
+
+ /* Free the quarktable */
+ for(i=0; i<quarktable->len; i++) {
+ string = g_ptr_array_index (quarktable, i);
+ g_free(string);
+ }
+ g_ptr_array_free(quarktable, TRUE);
+ return;
+}
+
static void
init(LttvTracesetState *self, LttvTraceset *ts)
{
LttvTracefileContext*, j));
tfcs->tracefile_name = ltt_tracefile_name(tfcs->parent.tf);
tfcs->cpu = ltt_tracefile_cpu(tfcs->parent.tf);
-#if 0
- if(ltt_tracefile_tid(tfcs->parent.tf) != 0) {
- /* It's a Usertrace */
- LttvProcessState *process;
- LttTime timestamp =
- ltt_interpolate_time_from_tsc(tfcs->parent.tf,
- ltt_tracefile_creation(tfcs->parent.tf));
- process = lttv_state_find_process_or_create(
- tcs,
- 0, ltt_tracefile_tid(tfcs->parent.tf),
- ×tamp);
- process->usertrace = tfcs;
- }
- }
-#endif //0
if(ltt_tracefile_tid(tfcs->parent.tf) != 0) {
/* It's a Usertrace */
guint tid = ltt_tracefile_tid(tfcs->parent.tf);
}
}
+ /* See if the trace has saved states */
+ state_load_saved_states(tcs);
}
}
fwrite(&es->s, sizeof(es->s), 1, fp);
fwrite(&es->entry, sizeof(es->entry), 1, fp);
fwrite(&es->change, sizeof(es->change), 1, fp);
+ fwrite(&es->cum_cpu_time, sizeof(es->cum_cpu_time), 1, fp);
#if 0
fprintf(fp, " <ES MODE=\"%s\" SUBMODE=\"%s\" ENTRY_S=%lu ENTRY_NS=%lu",
g_quark_to_string(es->t), g_quark_to_string(es->n),
/* Read process state from a file */
/* Called because a HDR_PROCESS was found */
-static void read_process_state_raw(LttvTraceState *self, FILE *fp)
+static void read_process_state_raw(LttvTraceState *self, FILE *fp,
+ GPtrArray *quarktable)
{
LttvExecutionState *es;
LttvProcessState *process, *parent_process;
LttvProcessState tmp;
+ GQuark tmpq;
guint i;
- guint64 address;
+ guint64 *address;
guint cpu;
- /* TOOD : check return value */
+ /* TODO : check return value */
fread(&tmp.type, sizeof(tmp.type), 1, fp);
fread(&tmp.name, sizeof(tmp.name), 1, fp);
fread(&tmp.brand, sizeof(tmp.brand), 1, fp);
/* We must link to the parent */
parent_process = lttv_state_find_process_or_create(self, ANY_CPU, tmp.ppid,
<t_time_zero);
- process = lttv_state_find_process_or_create(self, ANY_CPU, tmp.pid,
- &tmp.insertion_time);
+ process = lttv_state_find_process_or_create(self, tmp.cpu, tmp.pid,
+ &tmp.creation_time);
}
+ process->insertion_time = tmp.insertion_time;
process->creation_time = tmp.creation_time;
- process->type = tmp.type;
- process->brand = tmp.brand;
+ process->type = g_quark_from_string(
+ (gchar*)g_ptr_array_index(quarktable, tmp.type));
process->tgid = tmp.tgid;
- process->cpu = tmp.cpu;
+ process->ppid = tmp.ppid;
+ process->brand = g_quark_from_string(
+ (gchar*)g_ptr_array_index(quarktable, tmp.brand));
+ process->name =
+ g_quark_from_string((gchar*)g_ptr_array_index(quarktable, tmp.name));
do {
if(feof(fp) || ferror(fp)) goto end_loop;
gint hdr = fgetc(fp);
+ if(hdr == EOF) goto end_loop;
switch(hdr) {
case HDR_ES:
+ process->execution_stack =
+ g_array_set_size(process->execution_stack,
+ process->execution_stack->len + 1);
+ es = &g_array_index(process->execution_stack, LttvExecutionState,
+ process->execution_stack->len-1);
+
+ fread(&es->t, sizeof(es->t), 1, fp);
+ es->t = g_quark_from_string(
+ (gchar*)g_ptr_array_index(quarktable, es->t));
+ fread(&es->n, sizeof(es->n), 1, fp);
+ es->n = g_quark_from_string(
+ (gchar*)g_ptr_array_index(quarktable, es->n));
+ fread(&es->s, sizeof(es->s), 1, fp);
+ es->s = g_quark_from_string(
+ (gchar*)g_ptr_array_index(quarktable, es->s));
+ fread(&es->entry, sizeof(es->entry), 1, fp);
+ fread(&es->change, sizeof(es->change), 1, fp);
+ fread(&es->cum_cpu_time, sizeof(es->cum_cpu_time), 1, fp);
break;
case HDR_USER_STACK:
+ process->user_stack = g_array_set_size(process->user_stack,
+ process->user_stack->len + 1);
+ address = &g_array_index(process->user_stack, guint64,
+ process->user_stack->len-1);
+ fread(address, sizeof(address), 1, fp);
+ process->current_function = *address;
break;
case HDR_USERTRACE:
- break;
- case HDR_PROCESS_STATE:
+ fread(&tmpq, sizeof(tmpq), 1, fp);
+ fread(&process->usertrace->cpu, sizeof(process->usertrace->cpu), 1, fp);
break;
default:
ungetc(hdr, fp);
/* Called because a HDR_PROCESS_STATE was found */
/* Append a saved state to the trace states */
-void lttv_state_read_raw(LttvTraceState *self, FILE *fp)
+void lttv_state_read_raw(LttvTraceState *self, FILE *fp, GPtrArray *quarktable)
{
guint i, nb_tracefile, nb_block, offset;
guint64 tsc;
- LttTracefile *tf;
LttvTracefileState *tfcs;
LttEventPosition *ep;
do {
if(feof(fp) || ferror(fp)) goto end_loop;
hdr = fgetc(fp);
+ if(hdr == EOF) goto end_loop;
switch(hdr) {
case HDR_PROCESS:
/* Call read_process_state_raw */
- read_process_state_raw(self, fp);
+ read_process_state_raw(self, fp, quarktable);
break;
case HDR_TRACEFILE:
case HDR_TRACESET:
case HDR_USERTRACE:
case HDR_PROCESS_STATE:
case HDR_CPU:
- g_error("Error while parsing saved state file :"
- " unexpected data header %d",
- hdr);
+ ungetc(hdr, fp);
+ goto end_loop;
break;
default:
g_error("Error while parsing saved state file : unknown data header %d",
fread(&nb_block, sizeof(nb_block), 1, fp);
fread(&offset, sizeof(offset), 1, fp);
fread(&tsc, sizeof(tsc), 1, fp);
- ltt_event_position_set(ep, tf, nb_block, offset, tsc);
+ ltt_event_position_set(ep, tfcs->parent.tf, nb_block, offset, tsc);
gint ret = ltt_tracefile_seek_position(tfcs->parent.tf, ep);
g_assert(ret == 0);
}
}
/* Called when a HDR_TRACE is found */
-void lttv_trace_states_read_raw(LttvTraceState *tcs, FILE *fp)
+void lttv_trace_states_read_raw(LttvTraceState *tcs, FILE *fp,
+ GPtrArray *quarktable)
{
int hdr;
do {
if(feof(fp) || ferror(fp)) goto end_loop;
hdr = fgetc(fp);
+ if(hdr == EOF) goto end_loop;
switch(hdr) {
case HDR_PROCESS_STATE:
/* Call read_process_state_raw */
- lttv_state_read_raw(tcs, fp);
+ lttv_state_read_raw(tcs, fp, quarktable);
break;
case HDR_TRACEFILE:
case HDR_TRACESET:
for(i = 0 ; i < nb_trace ; i++) {
ts = (LttvTraceState *)self->parent.traces[i];
+ if(ts->has_precomputed_states) continue;
+
/* Find the eventtype id for the following events and register the
associated by id hooks. */
nb_trace = lttv_traceset_number(traceset);
for(i = 0 ; i < nb_trace ; i++) {
ts = LTTV_TRACE_STATE(self->parent.traces[i]);
+
+ if(ts->has_precomputed_states) continue;
+
lttv_attribute_find(ts->parent.a, LTTV_STATE_HOOKS, LTTV_POINTER, &val);
hooks = *(val.v_pointer);
projects / lttv.git / commitdiff
