tools/perf/util/thread.c

   1 #include "../perf.h"
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include "session.h"
   6 #include "thread.h"
   7 #include "util.h"
   8 #include "debug.h"
   9
  10 struct thread *thread__new(pid_t pid)
  11 {
  12         struct thread *self = zalloc(sizeof(*self));
  13
  14         if (self != NULL) {
  15                 map_groups__init(&self->mg);
  16                 self->pid = pid;
  17                 self->comm = malloc(32);
  18                 if (self->comm)
  19                         snprintf(self->comm, 32, ":%d", self->pid);
  20         }
  21
  22         return self;
  23 }
  24
  25 void thread__delete(struct thread *self)
  26 {
  27         map_groups__exit(&self->mg);
  28         free(self->comm);
  29         free(self);
  30 }
  31
  32 int thread__set_comm(struct thread *self, const char *comm)
  33 {
  34         int err;
  35
  36         if (self->comm)
  37                 free(self->comm);
  38         self->comm = strdup(comm);
  39         err = self->comm == NULL ? -ENOMEM : 0;
  40         if (!err) {
  41                 self->comm_set = true;
  42         }
  43         return err;
  44 }
  45
  46 int thread__comm_len(struct thread *self)
  47 {
  48         if (!self->comm_len) {
  49                 if (!self->comm)
  50                         return 0;
  51                 self->comm_len = strlen(self->comm);
  52         }
  53
  54         return self->comm_len;
  55 }
  56
  57 size_t thread__fprintf(struct thread *thread, FILE *fp)
  58 {
  59         return fprintf(fp, "Thread %d %s\n", thread->pid, thread->comm) +
  60                map_groups__fprintf(&thread->mg, verbose, fp);
  61 }
  62
  63 void thread__insert_map(struct thread *self, struct map *map)
  64 {
  65         map_groups__fixup_overlappings(&self->mg, map, verbose, stderr);
  66         map_groups__insert(&self->mg, map);
  67 }
  68
  69 int thread__fork(struct thread *self, struct thread *parent)
  70 {
  71         int i;
  72
  73         if (parent->comm_set) {
  74                 if (self->comm)
  75                         free(self->comm);
  76                 self->comm = strdup(parent->comm);
  77                 if (!self->comm)
  78                         return -ENOMEM;
  79                 self->comm_set = true;
  80         }
  81
  82         for (i = 0; i < MAP__NR_TYPES; ++i)
  83                 if (map_groups__clone(&self->mg, &parent->mg, i) < 0)
  84                         return -ENOMEM;
  85         return 0;
  86 }