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-rw-r--r--tools/perf/util/thread.c136
1 files changed, 93 insertions, 43 deletions
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index e3d4a550a703..49eaf1d7d89d 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -6,86 +6,136 @@
#include "thread.h"
#include "util.h"
#include "debug.h"
+#include "comm.h"
struct thread *thread__new(pid_t pid, pid_t tid)
{
- struct thread *self = zalloc(sizeof(*self));
-
- if (self != NULL) {
- map_groups__init(&self->mg);
- self->pid_ = pid;
- self->tid = tid;
- self->ppid = -1;
- self->comm = malloc(32);
- if (self->comm)
- snprintf(self->comm, 32, ":%d", self->tid);
+ char *comm_str;
+ struct comm *comm;
+ struct thread *thread = zalloc(sizeof(*thread));
+
+ if (thread != NULL) {
+ map_groups__init(&thread->mg);
+ 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;
+
+ map_groups__exit(&thread->mg);
+ list_for_each_entry_safe(comm, tmp, &thread->comm_list, list) {
+ list_del(&comm->list);
+ comm__free(comm);
}
- return self;
+ free(thread);
}
-void thread__delete(struct thread *self)
+struct comm *thread__comm(const struct thread *thread)
{
- map_groups__exit(&self->mg);
- free(self->comm);
- free(self);
+ if (list_empty(&thread->comm_list))
+ return NULL;
+
+ return list_first_entry(&thread->comm_list, struct comm, list);
}
-int thread__set_comm(struct thread *self, const char *comm)
+/* CHECKME: time should always be 0 if event aren't ordered */
+int thread__set_comm(struct thread *thread, const char *str, u64 timestamp)
{
- int err;
-
- if (self->comm)
- free(self->comm);
- self->comm = strdup(comm);
- err = self->comm == NULL ? -ENOMEM : 0;
- if (!err) {
- self->comm_set = true;
+ struct comm *new, *curr = thread__comm(thread);
+
+ /* Override latest entry if it had no specific time coverage */
+ if (!curr->start) {
+ comm__override(curr, str, timestamp);
+ } else {
+ new = comm__new(str, timestamp);
+ if (!new)
+ return -ENOMEM;
+ list_add(&new->list, &thread->comm_list);
}
- return err;
+
+ 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);
}
-int thread__comm_len(struct thread *self)
+/* CHECKME: it should probably better return the max comm len from its comm list */
+int thread__comm_len(struct thread *thread)
{
- if (!self->comm_len) {
- if (!self->comm)
+ if (!thread->comm_len) {
+ const char *comm = thread__comm_str(thread);
+ if (!comm)
return 0;
- self->comm_len = strlen(self->comm);
+ thread->comm_len = strlen(comm);
}
- return self->comm_len;
+ return thread->comm_len;
}
size_t thread__fprintf(struct thread *thread, FILE *fp)
{
- return fprintf(fp, "Thread %d %s\n", thread->tid, thread->comm) +
+ return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) +
map_groups__fprintf(&thread->mg, verbose, fp);
}
-void thread__insert_map(struct thread *self, struct map *map)
+void thread__insert_map(struct thread *thread, struct map *map)
{
- map_groups__fixup_overlappings(&self->mg, map, verbose, stderr);
- map_groups__insert(&self->mg, map);
+ map_groups__fixup_overlappings(&thread->mg, map, verbose, stderr);
+ map_groups__insert(&thread->mg, map);
}
-int thread__fork(struct thread *self, struct thread *parent)
+int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
{
- int i;
+ int i, err;
if (parent->comm_set) {
- if (self->comm)
- free(self->comm);
- self->comm = strdup(parent->comm);
- if (!self->comm)
+ const char *comm = thread__comm_str(parent);
+ if (!comm)
return -ENOMEM;
- self->comm_set = true;
+ err = thread__set_comm(thread, comm, timestamp);
+ if (!err)
+ return err;
+ thread->comm_set = true;
}
for (i = 0; i < MAP__NR_TYPES; ++i)
- if (map_groups__clone(&self->mg, &parent->mg, i) < 0)
+ if (map_groups__clone(&thread->mg, &parent->mg, i) < 0)
return -ENOMEM;
- self->ppid = parent->tid;
+ thread->ppid = parent->tid;
return 0;
}