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Commit | Line | Data |
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6baa0a5a FW |
1 | #include "../perf.h" |
2 | #include <stdlib.h> | |
3 | #include <stdio.h> | |
4 | #include <string.h> | |
b3165f41 | 5 | #include "session.h" |
6baa0a5a | 6 | #include "thread.h" |
00447ccd | 7 | #include "thread-stack.h" |
6baa0a5a | 8 | #include "util.h" |
6e086437 | 9 | #include "debug.h" |
1902efe7 | 10 | #include "comm.h" |
66f066d8 | 11 | #include "unwind.h" |
6baa0a5a | 12 | |
cddcef60 JO |
13 | int thread__init_map_groups(struct thread *thread, struct machine *machine) |
14 | { | |
15 | struct thread *leader; | |
16 | pid_t pid = thread->pid_; | |
17 | ||
1fcb8768 | 18 | if (pid == thread->tid || pid == -1) { |
11246c70 | 19 | thread->mg = map_groups__new(machine); |
cddcef60 | 20 | } else { |
b91fc39f | 21 | leader = __machine__findnew_thread(machine, pid, pid); |
cddcef60 JO |
22 | if (leader) |
23 | thread->mg = map_groups__get(leader->mg); | |
24 | } | |
25 | ||
26 | return thread->mg ? 0 : -1; | |
27 | } | |
28 | ||
99d725fc | 29 | struct thread *thread__new(pid_t pid, pid_t tid) |
6baa0a5a | 30 | { |
1902efe7 FW |
31 | char *comm_str; |
32 | struct comm *comm; | |
c824c433 | 33 | struct thread *thread = zalloc(sizeof(*thread)); |
6baa0a5a | 34 | |
c824c433 | 35 | if (thread != NULL) { |
c824c433 ACM |
36 | thread->pid_ = pid; |
37 | thread->tid = tid; | |
38 | thread->ppid = -1; | |
bf49c35f | 39 | thread->cpu = -1; |
1902efe7 FW |
40 | INIT_LIST_HEAD(&thread->comm_list); |
41 | ||
66f066d8 NK |
42 | if (unwind__prepare_access(thread) < 0) |
43 | goto err_thread; | |
44 | ||
1902efe7 FW |
45 | comm_str = malloc(32); |
46 | if (!comm_str) | |
47 | goto err_thread; | |
48 | ||
49 | snprintf(comm_str, 32, ":%d", tid); | |
65de51f9 | 50 | comm = comm__new(comm_str, 0, false); |
1902efe7 FW |
51 | free(comm_str); |
52 | if (!comm) | |
53 | goto err_thread; | |
54 | ||
55 | list_add(&comm->list, &thread->comm_list); | |
e1ed3a5b | 56 | atomic_set(&thread->refcnt, 0); |
b91fc39f | 57 | RB_CLEAR_NODE(&thread->rb_node); |
6baa0a5a FW |
58 | } |
59 | ||
c824c433 | 60 | return thread; |
1902efe7 FW |
61 | |
62 | err_thread: | |
63 | free(thread); | |
64 | return NULL; | |
6baa0a5a FW |
65 | } |
66 | ||
c824c433 | 67 | void thread__delete(struct thread *thread) |
591765fd | 68 | { |
1902efe7 FW |
69 | struct comm *comm, *tmp; |
70 | ||
b91fc39f | 71 | BUG_ON(!RB_EMPTY_NODE(&thread->rb_node)); |
b91fc39f | 72 | |
00447ccd AH |
73 | thread_stack__free(thread); |
74 | ||
9608b84e AH |
75 | if (thread->mg) { |
76 | map_groups__put(thread->mg); | |
77 | thread->mg = NULL; | |
78 | } | |
1902efe7 FW |
79 | list_for_each_entry_safe(comm, tmp, &thread->comm_list, list) { |
80 | list_del(&comm->list); | |
81 | comm__free(comm); | |
82 | } | |
66f066d8 | 83 | unwind__finish_access(thread); |
1902efe7 | 84 | |
c824c433 | 85 | free(thread); |
591765fd ACM |
86 | } |
87 | ||
f3b623b8 ACM |
88 | struct thread *thread__get(struct thread *thread) |
89 | { | |
b91fc39f ACM |
90 | if (thread) |
91 | atomic_inc(&thread->refcnt); | |
f3b623b8 ACM |
92 | return thread; |
93 | } | |
94 | ||
95 | void thread__put(struct thread *thread) | |
96 | { | |
e1ed3a5b | 97 | if (thread && atomic_dec_and_test(&thread->refcnt)) { |
f3b623b8 ACM |
98 | list_del_init(&thread->node); |
99 | thread__delete(thread); | |
100 | } | |
101 | } | |
102 | ||
4dfced35 | 103 | struct comm *thread__comm(const struct thread *thread) |
6baa0a5a | 104 | { |
1902efe7 FW |
105 | if (list_empty(&thread->comm_list)) |
106 | return NULL; | |
4385d580 | 107 | |
1902efe7 FW |
108 | return list_first_entry(&thread->comm_list, struct comm, list); |
109 | } | |
110 | ||
65de51f9 AH |
111 | struct comm *thread__exec_comm(const struct thread *thread) |
112 | { | |
113 | struct comm *comm, *last = NULL; | |
114 | ||
115 | list_for_each_entry(comm, &thread->comm_list, list) { | |
116 | if (comm->exec) | |
117 | return comm; | |
118 | last = comm; | |
119 | } | |
120 | ||
121 | return last; | |
122 | } | |
123 | ||
65de51f9 AH |
124 | int __thread__set_comm(struct thread *thread, const char *str, u64 timestamp, |
125 | bool exec) | |
1902efe7 FW |
126 | { |
127 | struct comm *new, *curr = thread__comm(thread); | |
3178f58b | 128 | int err; |
1902efe7 | 129 | |
a8480808 AH |
130 | /* Override the default :tid entry */ |
131 | if (!thread->comm_set) { | |
65de51f9 | 132 | err = comm__override(curr, str, timestamp, exec); |
3178f58b FW |
133 | if (err) |
134 | return err; | |
a5285ad9 | 135 | } else { |
65de51f9 | 136 | new = comm__new(str, timestamp, exec); |
a5285ad9 FW |
137 | if (!new) |
138 | return -ENOMEM; | |
139 | list_add(&new->list, &thread->comm_list); | |
380b5143 NK |
140 | |
141 | if (exec) | |
142 | unwind__flush_access(thread); | |
4385d580 | 143 | } |
1902efe7 | 144 | |
1902efe7 FW |
145 | thread->comm_set = true; |
146 | ||
147 | return 0; | |
6baa0a5a FW |
148 | } |
149 | ||
b9c5143a FW |
150 | const char *thread__comm_str(const struct thread *thread) |
151 | { | |
1902efe7 FW |
152 | const struct comm *comm = thread__comm(thread); |
153 | ||
154 | if (!comm) | |
155 | return NULL; | |
156 | ||
157 | return comm__str(comm); | |
b9c5143a FW |
158 | } |
159 | ||
1902efe7 | 160 | /* CHECKME: it should probably better return the max comm len from its comm list */ |
c824c433 | 161 | int thread__comm_len(struct thread *thread) |
a4fb581b | 162 | { |
c824c433 | 163 | if (!thread->comm_len) { |
1902efe7 FW |
164 | const char *comm = thread__comm_str(thread); |
165 | if (!comm) | |
a4fb581b | 166 | return 0; |
1902efe7 | 167 | thread->comm_len = strlen(comm); |
a4fb581b FW |
168 | } |
169 | ||
c824c433 | 170 | return thread->comm_len; |
a4fb581b FW |
171 | } |
172 | ||
3f067dca | 173 | size_t thread__fprintf(struct thread *thread, FILE *fp) |
9958e1f0 | 174 | { |
b9c5143a | 175 | return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) + |
acebd408 | 176 | map_groups__fprintf(thread->mg, fp); |
6baa0a5a FW |
177 | } |
178 | ||
c824c433 | 179 | void thread__insert_map(struct thread *thread, struct map *map) |
1b46cddf | 180 | { |
acebd408 | 181 | map_groups__fixup_overlappings(thread->mg, map, stderr); |
93d5731d | 182 | map_groups__insert(thread->mg, map); |
6baa0a5a FW |
183 | } |
184 | ||
cddcef60 JO |
185 | static int thread__clone_map_groups(struct thread *thread, |
186 | struct thread *parent) | |
187 | { | |
188 | int i; | |
189 | ||
190 | /* This is new thread, we share map groups for process. */ | |
191 | if (thread->pid_ == parent->pid_) | |
192 | return 0; | |
193 | ||
0d7e7acc AH |
194 | if (thread->mg == parent->mg) { |
195 | pr_debug("broken map groups on thread %d/%d parent %d/%d\n", | |
196 | thread->pid_, thread->tid, parent->pid_, parent->tid); | |
197 | return 0; | |
198 | } | |
199 | ||
cddcef60 JO |
200 | /* But this one is new process, copy maps. */ |
201 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
202 | if (map_groups__clone(thread->mg, parent->mg, i) < 0) | |
203 | return -ENOMEM; | |
204 | ||
205 | return 0; | |
206 | } | |
207 | ||
1902efe7 | 208 | int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp) |
95011c60 | 209 | { |
cddcef60 | 210 | int err; |
6baa0a5a | 211 | |
faa5c5c3 | 212 | if (parent->comm_set) { |
1902efe7 FW |
213 | const char *comm = thread__comm_str(parent); |
214 | if (!comm) | |
faa5c5c3 | 215 | return -ENOMEM; |
1902efe7 | 216 | err = thread__set_comm(thread, comm, timestamp); |
8d00be81 | 217 | if (err) |
1902efe7 | 218 | return err; |
faa5c5c3 | 219 | } |
6baa0a5a | 220 | |
c824c433 | 221 | thread->ppid = parent->tid; |
cddcef60 | 222 | return thread__clone_map_groups(thread, parent); |
6baa0a5a | 223 | } |
52a3cb8c ACM |
224 | |
225 | void thread__find_cpumode_addr_location(struct thread *thread, | |
52a3cb8c ACM |
226 | enum map_type type, u64 addr, |
227 | struct addr_location *al) | |
228 | { | |
229 | size_t i; | |
230 | const u8 const cpumodes[] = { | |
231 | PERF_RECORD_MISC_USER, | |
232 | PERF_RECORD_MISC_KERNEL, | |
233 | PERF_RECORD_MISC_GUEST_USER, | |
234 | PERF_RECORD_MISC_GUEST_KERNEL | |
235 | }; | |
236 | ||
237 | for (i = 0; i < ARRAY_SIZE(cpumodes); i++) { | |
bb871a9c | 238 | thread__find_addr_location(thread, cpumodes[i], type, addr, al); |
52a3cb8c ACM |
239 | if (al->map) |
240 | break; | |
241 | } | |
242 | } |