141 строка
2.7 KiB
C
141 строка
2.7 KiB
C
#include "../perf.h"
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include "session.h"
|
|
#include "thread.h"
|
|
#include "util.h"
|
|
#include "debug.h"
|
|
|
|
static struct thread *thread__new(pid_t pid)
|
|
{
|
|
struct thread *self = zalloc(sizeof(*self));
|
|
|
|
if (self != NULL) {
|
|
map_groups__init(&self->mg);
|
|
self->pid = pid;
|
|
self->comm = malloc(32);
|
|
if (self->comm)
|
|
snprintf(self->comm, 32, ":%d", self->pid);
|
|
}
|
|
|
|
return self;
|
|
}
|
|
|
|
void thread__delete(struct thread *self)
|
|
{
|
|
map_groups__exit(&self->mg);
|
|
free(self->comm);
|
|
free(self);
|
|
}
|
|
|
|
int thread__set_comm(struct thread *self, const char *comm)
|
|
{
|
|
int err;
|
|
|
|
if (self->comm)
|
|
free(self->comm);
|
|
self->comm = strdup(comm);
|
|
err = self->comm == NULL ? -ENOMEM : 0;
|
|
if (!err) {
|
|
self->comm_set = true;
|
|
map_groups__flush(&self->mg);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
int thread__comm_len(struct thread *self)
|
|
{
|
|
if (!self->comm_len) {
|
|
if (!self->comm)
|
|
return 0;
|
|
self->comm_len = strlen(self->comm);
|
|
}
|
|
|
|
return self->comm_len;
|
|
}
|
|
|
|
static size_t thread__fprintf(struct thread *self, FILE *fp)
|
|
{
|
|
return fprintf(fp, "Thread %d %s\n", self->pid, self->comm) +
|
|
map_groups__fprintf(&self->mg, verbose, fp);
|
|
}
|
|
|
|
struct thread *perf_session__findnew(struct perf_session *self, pid_t pid)
|
|
{
|
|
struct rb_node **p = &self->threads.rb_node;
|
|
struct rb_node *parent = NULL;
|
|
struct thread *th;
|
|
|
|
/*
|
|
* Font-end cache - PID lookups come in blocks,
|
|
* so most of the time we dont have to look up
|
|
* the full rbtree:
|
|
*/
|
|
if (self->last_match && self->last_match->pid == pid)
|
|
return self->last_match;
|
|
|
|
while (*p != NULL) {
|
|
parent = *p;
|
|
th = rb_entry(parent, struct thread, rb_node);
|
|
|
|
if (th->pid == pid) {
|
|
self->last_match = th;
|
|
return th;
|
|
}
|
|
|
|
if (pid < th->pid)
|
|
p = &(*p)->rb_left;
|
|
else
|
|
p = &(*p)->rb_right;
|
|
}
|
|
|
|
th = thread__new(pid);
|
|
if (th != NULL) {
|
|
rb_link_node(&th->rb_node, parent, p);
|
|
rb_insert_color(&th->rb_node, &self->threads);
|
|
self->last_match = th;
|
|
}
|
|
|
|
return th;
|
|
}
|
|
|
|
void thread__insert_map(struct thread *self, struct map *map)
|
|
{
|
|
map_groups__fixup_overlappings(&self->mg, map, verbose, stderr);
|
|
map_groups__insert(&self->mg, map);
|
|
}
|
|
|
|
int thread__fork(struct thread *self, struct thread *parent)
|
|
{
|
|
int i;
|
|
|
|
if (parent->comm_set) {
|
|
if (self->comm)
|
|
free(self->comm);
|
|
self->comm = strdup(parent->comm);
|
|
if (!self->comm)
|
|
return -ENOMEM;
|
|
self->comm_set = true;
|
|
}
|
|
|
|
for (i = 0; i < MAP__NR_TYPES; ++i)
|
|
if (map_groups__clone(&self->mg, &parent->mg, i) < 0)
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
size_t perf_session__fprintf(struct perf_session *self, FILE *fp)
|
|
{
|
|
size_t ret = 0;
|
|
struct rb_node *nd;
|
|
|
|
for (nd = rb_first(&self->threads); nd; nd = rb_next(nd)) {
|
|
struct thread *pos = rb_entry(nd, struct thread, rb_node);
|
|
|
|
ret += thread__fprintf(pos, fp);
|
|
}
|
|
|
|
return ret;
|
|
}
|