Commit | Line | Data |
---|---|---|
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); |
abd82868 | 22 | if (leader) { |
cddcef60 | 23 | thread->mg = map_groups__get(leader->mg); |
abd82868 ACM |
24 | thread__put(leader); |
25 | } | |
cddcef60 JO |
26 | } |
27 | ||
28 | return thread->mg ? 0 : -1; | |
29 | } | |
30 | ||
99d725fc | 31 | struct thread *thread__new(pid_t pid, pid_t tid) |
6baa0a5a | 32 | { |
1902efe7 FW |
33 | char *comm_str; |
34 | struct comm *comm; | |
c824c433 | 35 | struct thread *thread = zalloc(sizeof(*thread)); |
6baa0a5a | 36 | |
c824c433 | 37 | if (thread != NULL) { |
c824c433 ACM |
38 | thread->pid_ = pid; |
39 | thread->tid = tid; | |
40 | thread->ppid = -1; | |
bf49c35f | 41 | thread->cpu = -1; |
1902efe7 FW |
42 | INIT_LIST_HEAD(&thread->comm_list); |
43 | ||
66f066d8 NK |
44 | if (unwind__prepare_access(thread) < 0) |
45 | goto err_thread; | |
46 | ||
1902efe7 FW |
47 | comm_str = malloc(32); |
48 | if (!comm_str) | |
49 | goto err_thread; | |
50 | ||
51 | snprintf(comm_str, 32, ":%d", tid); | |
65de51f9 | 52 | comm = comm__new(comm_str, 0, false); |
1902efe7 FW |
53 | free(comm_str); |
54 | if (!comm) | |
55 | goto err_thread; | |
56 | ||
57 | list_add(&comm->list, &thread->comm_list); | |
abd82868 | 58 | atomic_set(&thread->refcnt, 1); |
b91fc39f | 59 | RB_CLEAR_NODE(&thread->rb_node); |
6baa0a5a FW |
60 | } |
61 | ||
c824c433 | 62 | return thread; |
1902efe7 FW |
63 | |
64 | err_thread: | |
65 | free(thread); | |
66 | return NULL; | |
6baa0a5a FW |
67 | } |
68 | ||
c824c433 | 69 | void thread__delete(struct thread *thread) |
591765fd | 70 | { |
1902efe7 FW |
71 | struct comm *comm, *tmp; |
72 | ||
b91fc39f | 73 | BUG_ON(!RB_EMPTY_NODE(&thread->rb_node)); |
b91fc39f | 74 | |
00447ccd AH |
75 | thread_stack__free(thread); |
76 | ||
9608b84e AH |
77 | if (thread->mg) { |
78 | map_groups__put(thread->mg); | |
79 | thread->mg = NULL; | |
80 | } | |
1902efe7 FW |
81 | list_for_each_entry_safe(comm, tmp, &thread->comm_list, list) { |
82 | list_del(&comm->list); | |
83 | comm__free(comm); | |
84 | } | |
66f066d8 | 85 | unwind__finish_access(thread); |
1902efe7 | 86 | |
c824c433 | 87 | free(thread); |
591765fd ACM |
88 | } |
89 | ||
f3b623b8 ACM |
90 | struct thread *thread__get(struct thread *thread) |
91 | { | |
b91fc39f ACM |
92 | if (thread) |
93 | atomic_inc(&thread->refcnt); | |
f3b623b8 ACM |
94 | return thread; |
95 | } | |
96 | ||
97 | void thread__put(struct thread *thread) | |
98 | { | |
e1ed3a5b | 99 | if (thread && atomic_dec_and_test(&thread->refcnt)) { |
abd82868 ACM |
100 | /* |
101 | * Remove it from the dead_threads list, as last reference | |
102 | * is gone. | |
103 | */ | |
f3b623b8 ACM |
104 | list_del_init(&thread->node); |
105 | thread__delete(thread); | |
106 | } | |
107 | } | |
108 | ||
4dfced35 | 109 | struct comm *thread__comm(const struct thread *thread) |
6baa0a5a | 110 | { |
1902efe7 FW |
111 | if (list_empty(&thread->comm_list)) |
112 | return NULL; | |
4385d580 | 113 | |
1902efe7 FW |
114 | return list_first_entry(&thread->comm_list, struct comm, list); |
115 | } | |
116 | ||
65de51f9 AH |
117 | struct comm *thread__exec_comm(const struct thread *thread) |
118 | { | |
119 | struct comm *comm, *last = NULL; | |
120 | ||
121 | list_for_each_entry(comm, &thread->comm_list, list) { | |
122 | if (comm->exec) | |
123 | return comm; | |
124 | last = comm; | |
125 | } | |
126 | ||
127 | return last; | |
128 | } | |
129 | ||
65de51f9 AH |
130 | int __thread__set_comm(struct thread *thread, const char *str, u64 timestamp, |
131 | bool exec) | |
1902efe7 FW |
132 | { |
133 | struct comm *new, *curr = thread__comm(thread); | |
3178f58b | 134 | int err; |
1902efe7 | 135 | |
a8480808 AH |
136 | /* Override the default :tid entry */ |
137 | if (!thread->comm_set) { | |
65de51f9 | 138 | err = comm__override(curr, str, timestamp, exec); |
3178f58b FW |
139 | if (err) |
140 | return err; | |
a5285ad9 | 141 | } else { |
65de51f9 | 142 | new = comm__new(str, timestamp, exec); |
a5285ad9 FW |
143 | if (!new) |
144 | return -ENOMEM; | |
145 | list_add(&new->list, &thread->comm_list); | |
380b5143 NK |
146 | |
147 | if (exec) | |
148 | unwind__flush_access(thread); | |
4385d580 | 149 | } |
1902efe7 | 150 | |
1902efe7 FW |
151 | thread->comm_set = true; |
152 | ||
153 | return 0; | |
6baa0a5a FW |
154 | } |
155 | ||
b9c5143a FW |
156 | const char *thread__comm_str(const struct thread *thread) |
157 | { | |
1902efe7 FW |
158 | const struct comm *comm = thread__comm(thread); |
159 | ||
160 | if (!comm) | |
161 | return NULL; | |
162 | ||
163 | return comm__str(comm); | |
b9c5143a FW |
164 | } |
165 | ||
1902efe7 | 166 | /* CHECKME: it should probably better return the max comm len from its comm list */ |
c824c433 | 167 | int thread__comm_len(struct thread *thread) |
a4fb581b | 168 | { |
c824c433 | 169 | if (!thread->comm_len) { |
1902efe7 FW |
170 | const char *comm = thread__comm_str(thread); |
171 | if (!comm) | |
a4fb581b | 172 | return 0; |
1902efe7 | 173 | thread->comm_len = strlen(comm); |
a4fb581b FW |
174 | } |
175 | ||
c824c433 | 176 | return thread->comm_len; |
a4fb581b FW |
177 | } |
178 | ||
3f067dca | 179 | size_t thread__fprintf(struct thread *thread, FILE *fp) |
9958e1f0 | 180 | { |
b9c5143a | 181 | return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) + |
acebd408 | 182 | map_groups__fprintf(thread->mg, fp); |
6baa0a5a FW |
183 | } |
184 | ||
c824c433 | 185 | void thread__insert_map(struct thread *thread, struct map *map) |
1b46cddf | 186 | { |
acebd408 | 187 | map_groups__fixup_overlappings(thread->mg, map, stderr); |
93d5731d | 188 | map_groups__insert(thread->mg, map); |
6baa0a5a FW |
189 | } |
190 | ||
cddcef60 JO |
191 | static int thread__clone_map_groups(struct thread *thread, |
192 | struct thread *parent) | |
193 | { | |
194 | int i; | |
195 | ||
196 | /* This is new thread, we share map groups for process. */ | |
197 | if (thread->pid_ == parent->pid_) | |
198 | return 0; | |
199 | ||
0d7e7acc AH |
200 | if (thread->mg == parent->mg) { |
201 | pr_debug("broken map groups on thread %d/%d parent %d/%d\n", | |
202 | thread->pid_, thread->tid, parent->pid_, parent->tid); | |
203 | return 0; | |
204 | } | |
205 | ||
cddcef60 JO |
206 | /* But this one is new process, copy maps. */ |
207 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
208 | if (map_groups__clone(thread->mg, parent->mg, i) < 0) | |
209 | return -ENOMEM; | |
210 | ||
211 | return 0; | |
212 | } | |
213 | ||
1902efe7 | 214 | int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp) |
95011c60 | 215 | { |
cddcef60 | 216 | int err; |
6baa0a5a | 217 | |
faa5c5c3 | 218 | if (parent->comm_set) { |
1902efe7 FW |
219 | const char *comm = thread__comm_str(parent); |
220 | if (!comm) | |
faa5c5c3 | 221 | return -ENOMEM; |
1902efe7 | 222 | err = thread__set_comm(thread, comm, timestamp); |
8d00be81 | 223 | if (err) |
1902efe7 | 224 | return err; |
faa5c5c3 | 225 | } |
6baa0a5a | 226 | |
c824c433 | 227 | thread->ppid = parent->tid; |
cddcef60 | 228 | return thread__clone_map_groups(thread, parent); |
6baa0a5a | 229 | } |
52a3cb8c ACM |
230 | |
231 | void thread__find_cpumode_addr_location(struct thread *thread, | |
52a3cb8c ACM |
232 | enum map_type type, u64 addr, |
233 | struct addr_location *al) | |
234 | { | |
235 | size_t i; | |
236 | const u8 const cpumodes[] = { | |
237 | PERF_RECORD_MISC_USER, | |
238 | PERF_RECORD_MISC_KERNEL, | |
239 | PERF_RECORD_MISC_GUEST_USER, | |
240 | PERF_RECORD_MISC_GUEST_KERNEL | |
241 | }; | |
242 | ||
243 | for (i = 0; i < ARRAY_SIZE(cpumodes); i++) { | |
bb871a9c | 244 | thread__find_addr_location(thread, cpumodes[i], type, addr, al); |
52a3cb8c ACM |
245 | if (al->map) |
246 | break; | |
247 | } | |
248 | } |