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