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, pid_t tid)
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->tid = tid;
18 self->ppid = -1;
19 self->comm = malloc(32);
20 if (self->comm)
21 snprintf(self->comm, 32, ":%d", self->tid);
22 }
23
24 return self;
25}
26
27void thread__delete(struct thread *self)
28{
29 map_groups__exit(&self->mg);
30 free(self->comm);
31 free(self);
32}
33
34int thread__set_comm(struct thread *self, const char *comm)
35{
36 int err;
37
38 if (self->comm)
39 free(self->comm);
40 self->comm = strdup(comm);
41 err = self->comm == NULL ? -ENOMEM : 0;
42 if (!err) {
43 self->comm_set = true;
44 }
45 return err;
46}
47
48int thread__comm_len(struct thread *self)
49{
50 if (!self->comm_len) {
51 if (!self->comm)
52 return 0;
53 self->comm_len = strlen(self->comm);
54 }
55
56 return self->comm_len;
57}
58
59size_t thread__fprintf(struct thread *thread, FILE *fp)
60{
61 return fprintf(fp, "Thread %d %s\n", thread->tid, thread->comm) +
62 map_groups__fprintf(&thread->mg, verbose, fp);
63}
64
65void thread__insert_map(struct thread *self, struct map *map)
66{
67 map_groups__fixup_overlappings(&self->mg, map, verbose, stderr);
68 map_groups__insert(&self->mg, map);
69}
70
71int thread__fork(struct thread *self, struct thread *parent)
72{
73 int i;
74
75 if (parent->comm_set) {
76 if (self->comm)
77 free(self->comm);
78 self->comm = strdup(parent->comm);
79 if (!self->comm)
80 return -ENOMEM;
81 self->comm_set = true;
82 }
83
84 for (i = 0; i < MAP__NR_TYPES; ++i)
85 if (map_groups__clone(&self->mg, &parent->mg, i) < 0)
86 return -ENOMEM;
87
88 self->ppid = parent->tid;
89
90 return 0;
91}