1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
#include "../perf.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "session.h"
#include "thread.h"
#include "util.h"
#include "debug.h"
#include "comm.h"
int thread__init_map_groups(struct thread *thread, struct machine *machine)
{
struct thread *leader;
pid_t pid = thread->pid_;
if (pid == thread->tid || pid == -1) {
thread->mg = map_groups__new();
} else {
leader = machine__findnew_thread(machine, pid, pid);
if (leader)
thread->mg = map_groups__get(leader->mg);
}
return thread->mg ? 0 : -1;
}
struct thread *thread__new(pid_t pid, pid_t tid)
{
char *comm_str;
struct comm *comm;
struct thread *thread = zalloc(sizeof(*thread));
if (thread != NULL) {
thread->pid_ = pid;
thread->tid = tid;
thread->ppid = -1;
INIT_LIST_HEAD(&thread->comm_list);
comm_str = malloc(32);
if (!comm_str)
goto err_thread;
snprintf(comm_str, 32, ":%d", tid);
comm = comm__new(comm_str, 0);
free(comm_str);
if (!comm)
goto err_thread;
list_add(&comm->list, &thread->comm_list);
}
return thread;
err_thread:
free(thread);
return NULL;
}
void thread__delete(struct thread *thread)
{
struct comm *comm, *tmp;
if (thread->mg) {
map_groups__put(thread->mg);
thread->mg = NULL;
}
list_for_each_entry_safe(comm, tmp, &thread->comm_list, list) {
list_del(&comm->list);
comm__free(comm);
}
free(thread);
}
struct comm *thread__comm(const struct thread *thread)
{
if (list_empty(&thread->comm_list))
return NULL;
return list_first_entry(&thread->comm_list, struct comm, list);
}
/* CHECKME: time should always be 0 if event aren't ordered */
int thread__set_comm(struct thread *thread, const char *str, u64 timestamp)
{
struct comm *new, *curr = thread__comm(thread);
int err;
/* Override latest entry if it had no specific time coverage */
if (!curr->start) {
err = comm__override(curr, str, timestamp);
if (err)
return err;
} else {
new = comm__new(str, timestamp);
if (!new)
return -ENOMEM;
list_add(&new->list, &thread->comm_list);
}
thread->comm_set = true;
return 0;
}
const char *thread__comm_str(const struct thread *thread)
{
const struct comm *comm = thread__comm(thread);
if (!comm)
return NULL;
return comm__str(comm);
}
/* CHECKME: it should probably better return the max comm len from its comm list */
int thread__comm_len(struct thread *thread)
{
if (!thread->comm_len) {
const char *comm = thread__comm_str(thread);
if (!comm)
return 0;
thread->comm_len = strlen(comm);
}
return thread->comm_len;
}
size_t thread__fprintf(struct thread *thread, FILE *fp)
{
return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) +
map_groups__fprintf(thread->mg, fp);
}
void thread__insert_map(struct thread *thread, struct map *map)
{
map_groups__fixup_overlappings(thread->mg, map, stderr);
map_groups__insert(thread->mg, map);
}
static int thread__clone_map_groups(struct thread *thread,
struct thread *parent)
{
int i;
/* This is new thread, we share map groups for process. */
if (thread->pid_ == parent->pid_)
return 0;
/* But this one is new process, copy maps. */
for (i = 0; i < MAP__NR_TYPES; ++i)
if (map_groups__clone(thread->mg, parent->mg, i) < 0)
return -ENOMEM;
return 0;
}
int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
{
int err;
if (parent->comm_set) {
const char *comm = thread__comm_str(parent);
if (!comm)
return -ENOMEM;
err = thread__set_comm(thread, comm, timestamp);
if (err)
return err;
thread->comm_set = true;
}
thread->ppid = parent->tid;
return thread__clone_map_groups(thread, parent);
}
void thread__find_cpumode_addr_location(struct thread *thread,
struct machine *machine,
enum map_type type, u64 addr,
struct addr_location *al)
{
size_t i;
const u8 const cpumodes[] = {
PERF_RECORD_MISC_USER,
PERF_RECORD_MISC_KERNEL,
PERF_RECORD_MISC_GUEST_USER,
PERF_RECORD_MISC_GUEST_KERNEL
};
for (i = 0; i < ARRAY_SIZE(cpumodes); i++) {
thread__find_addr_location(thread, machine, cpumodes[i], type,
addr, al);
if (al->map)
break;
}
}
|
