Lines Matching refs:thread
10 #include "thread.h"
11 #include "thread-stack.h"
22 int thread__init_maps(struct thread *thread, struct machine *machine)
24 pid_t pid = thread->pid_;
26 if (pid == thread->tid || pid == -1) {
27 thread->maps = maps__new(machine);
29 struct thread *leader = __machine__findnew_thread(machine, pid, pid);
31 thread->maps = maps__get(leader->maps);
36 return thread->maps ? 0 : -1;
39 struct thread *thread__new(pid_t pid, pid_t tid)
43 struct thread *thread = zalloc(sizeof(*thread));
45 if (thread != NULL) {
46 thread->pid_ = pid;
47 thread->tid = tid;
48 thread->ppid = -1;
49 thread->cpu = -1;
50 thread->lbr_stitch_enable = false;
51 INIT_LIST_HEAD(&thread->namespaces_list);
52 INIT_LIST_HEAD(&thread->comm_list);
53 init_rwsem(&thread->namespaces_lock);
54 init_rwsem(&thread->comm_lock);
66 list_add(&comm->list, &thread->comm_list);
67 refcount_set(&thread->refcnt, 1);
68 RB_CLEAR_NODE(&thread->rb_node);
70 thread->nsinfo = nsinfo__new(pid);
71 srccode_state_init(&thread->srccode_state);
74 return thread;
77 free(thread);
81 void thread__delete(struct thread *thread)
86 BUG_ON(!RB_EMPTY_NODE(&thread->rb_node));
88 thread_stack__free(thread);
90 if (thread->maps) {
91 maps__put(thread->maps);
92 thread->maps = NULL;
94 down_write(&thread->namespaces_lock);
96 &thread->namespaces_list, list) {
100 up_write(&thread->namespaces_lock);
102 down_write(&thread->comm_lock);
103 list_for_each_entry_safe(comm, tmp_comm, &thread->comm_list, list) {
107 up_write(&thread->comm_lock);
109 nsinfo__zput(thread->nsinfo);
110 srccode_state_free(&thread->srccode_state);
112 exit_rwsem(&thread->namespaces_lock);
113 exit_rwsem(&thread->comm_lock);
114 thread__free_stitch_list(thread);
115 free(thread);
118 struct thread *thread__get(struct thread *thread)
120 if (thread)
121 refcount_inc(&thread->refcnt);
122 return thread;
125 void thread__put(struct thread *thread)
127 if (thread && refcount_dec_and_test(&thread->refcnt)) {
145 * if so, remove it before finally deleting the thread, to avoid
148 if (!list_empty(&thread->node))
149 list_del_init(&thread->node);
150 thread__delete(thread);
154 static struct namespaces *__thread__namespaces(const struct thread *thread)
156 if (list_empty(&thread->namespaces_list))
159 return list_first_entry(&thread->namespaces_list, struct namespaces, list);
162 struct namespaces *thread__namespaces(struct thread *thread)
166 down_read(&thread->namespaces_lock);
167 ns = __thread__namespaces(thread);
168 up_read(&thread->namespaces_lock);
173 static int __thread__set_namespaces(struct thread *thread, u64 timestamp,
176 struct namespaces *new, *curr = __thread__namespaces(thread);
182 list_add(&new->list, &thread->namespaces_list);
187 * of this thread. Update end time for the namespaces
197 int thread__set_namespaces(struct thread *thread, u64 timestamp,
202 down_write(&thread->namespaces_lock);
203 ret = __thread__set_namespaces(thread, timestamp, event);
204 up_write(&thread->namespaces_lock);
208 struct comm *thread__comm(const struct thread *thread)
210 if (list_empty(&thread->comm_list))
213 return list_first_entry(&thread->comm_list, struct comm, list);
216 struct comm *thread__exec_comm(const struct thread *thread)
220 list_for_each_entry(comm, &thread->comm_list, list) {
229 * thread (created by processing a synthesized fork event). For a main
230 * thread, that is very probably wrong. Prefer a later comm to avoid
233 if (second_last && !last->start && thread->pid_ == thread->tid)
239 static int ____thread__set_comm(struct thread *thread, const char *str,
242 struct comm *new, *curr = thread__comm(thread);
245 if (!thread->comm_set) {
253 list_add(&new->list, &thread->comm_list);
256 unwind__flush_access(thread->maps);
259 thread->comm_set = true;
264 int __thread__set_comm(struct thread *thread, const char *str, u64 timestamp,
269 down_write(&thread->comm_lock);
270 ret = ____thread__set_comm(thread, str, timestamp, exec);
271 up_write(&thread->comm_lock);
275 int thread__set_comm_from_proc(struct thread *thread)
283 thread->pid_, thread->tid) >= (int)sizeof(path)) &&
286 err = thread__set_comm(thread, comm, 0);
292 static const char *__thread__comm_str(const struct thread *thread)
294 const struct comm *comm = thread__comm(thread);
302 const char *thread__comm_str(struct thread *thread)
306 down_read(&thread->comm_lock);
307 str = __thread__comm_str(thread);
308 up_read(&thread->comm_lock);
314 int thread__comm_len(struct thread *thread)
316 if (!thread->comm_len) {
317 const char *comm = thread__comm_str(thread);
320 thread->comm_len = strlen(comm);
323 return thread->comm_len;
326 size_t thread__fprintf(struct thread *thread, FILE *fp)
328 return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) +
329 maps__fprintf(thread->maps, fp);
332 int thread__insert_map(struct thread *thread, struct map *map)
336 ret = unwind__prepare_access(thread->maps, map, NULL);
340 maps__fixup_overlappings(thread->maps, map, stderr);
341 maps__insert(thread->maps, map);
346 static int __thread__prepare_access(struct thread *thread)
350 struct maps *maps = thread->maps;
356 err = unwind__prepare_access(thread->maps, map, &initialized);
366 static int thread__prepare_access(struct thread *thread)
371 err = __thread__prepare_access(thread);
376 static int thread__clone_maps(struct thread *thread, struct thread *parent, bool do_maps_clone)
378 /* This is new thread, we share map groups for process. */
379 if (thread->pid_ == parent->pid_)
380 return thread__prepare_access(thread);
382 if (thread->maps == parent->maps) {
383 pr_debug("broken map groups on thread %d/%d parent %d/%d\n",
384 thread->pid_, thread->tid, parent->pid_, parent->tid);
388 return do_maps_clone ? maps__clone(thread, parent->maps) : 0;
391 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp, bool do_maps_clone)
398 err = thread__set_comm(thread, comm, timestamp);
403 thread->ppid = parent->tid;
404 return thread__clone_maps(thread, parent, do_maps_clone);
407 void thread__find_cpumode_addr_location(struct thread *thread, u64 addr,
419 thread__find_symbol(thread, cpumodes[i], addr, al);
425 struct thread *thread__main_thread(struct machine *machine, struct thread *thread)
427 if (thread->pid_ == thread->tid)
428 return thread__get(thread);
430 if (thread->pid_ == -1)
433 return machine__find_thread(machine, thread->pid_, thread->pid_);
436 int thread__memcpy(struct thread *thread, struct machine *machine,
446 if (!thread__find_map(thread, cpumode, ip, &al) || !al.map->dso ||
458 void thread__free_stitch_list(struct thread *thread)
460 struct lbr_stitch *lbr_stitch = thread->lbr_stitch;
477 zfree(&thread->lbr_stitch);