Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#include "../perf.h"
2#include <stdlib.h>
3#include <stdio.h>
4#include <string.h>
5#include "session.h"
6#include "thread.h"
7#include "util.h"
8#include "debug.h"
9
10struct thread *thread__new(pid_t pid)
11{
12 struct thread *self = zalloc(sizeof(*self));
13
14 if (self != NULL) {
15 map_groups__init(&self->mg);
16 self->pid = pid;
17 self->ppid = -1;
18 self->comm = malloc(32);
19 if (self->comm)
20 snprintf(self->comm, 32, ":%d", self->pid);
21 }
22
23 return self;
24}
25
26void thread__delete(struct thread *self)
27{
28 map_groups__exit(&self->mg);
29 free(self->comm);
30 free(self);
31}
32
33int thread__set_comm(struct thread *self, const char *comm)
34{
35 int err;
36
37 if (self->comm)
38 free(self->comm);
39 self->comm = strdup(comm);
40 err = self->comm == NULL ? -ENOMEM : 0;
41 if (!err) {
42 self->comm_set = true;
43 }
44 return err;
45}
46
47int thread__comm_len(struct thread *self)
48{
49 if (!self->comm_len) {
50 if (!self->comm)
51 return 0;
52 self->comm_len = strlen(self->comm);
53 }
54
55 return self->comm_len;
56}
57
58size_t thread__fprintf(struct thread *thread, FILE *fp)
59{
60 return fprintf(fp, "Thread %d %s\n", thread->pid, thread->comm) +
61 map_groups__fprintf(&thread->mg, verbose, fp);
62}
63
64void thread__insert_map(struct thread *self, struct map *map)
65{
66 map_groups__fixup_overlappings(&self->mg, map, verbose, stderr);
67 map_groups__insert(&self->mg, map);
68}
69
70int thread__fork(struct thread *self, struct thread *parent)
71{
72 int i;
73
74 if (parent->comm_set) {
75 if (self->comm)
76 free(self->comm);
77 self->comm = strdup(parent->comm);
78 if (!self->comm)
79 return -ENOMEM;
80 self->comm_set = true;
81 }
82
83 for (i = 0; i < MAP__NR_TYPES; ++i)
84 if (map_groups__clone(&self->mg, &parent->mg, i) < 0)
85 return -ENOMEM;
86
87 self->ppid = parent->pid;
88
89 return 0;
90}