src/coregl_thread_pthread.c

   1 #include "coregl_internal.h"
   2
   3 //////////////////////////////////////////////////////////////////////////
   4 // Need implement this
   5 int mutex_lock(Mutex *mt);
   6 int mutex_unlock(Mutex *mt);
   7 int get_current_thread();
   8 int set_current_thread_state(GLThreadState *tstate);
   9 GLThreadState * get_current_thread_state();
  10 //////////////////////////////////////////////////////////////////////////
  11
  12 static Mutex            thread_key_mutex = MUTEX_INITIALIZER;
  13 static int              thread_key_inited = 0;
  14 static pthread_key_t    thread_key = 0;
  15
  16 int
  17 mutex_lock(Mutex *mt)
  18 {
  19         int ret = 0;
  20
  21         if (pthread_mutex_lock(mt) == 0)
  22                 ret = 1;
  23         else
  24                 ret = 0;
  25
  26         return ret;
  27 }
  28
  29 int
  30 mutex_unlock(Mutex *mt)
  31 {
  32         int ret = 0;
  33
  34         if (pthread_mutex_unlock(mt) == 0)
  35                 ret = 1;
  36         else
  37                 ret = 0;
  38
  39         return ret;
  40 }
  41
  42 int
  43 get_current_thread()
  44 {
  45         return pthread_self();
  46 }
  47
  48 int
  49 set_current_thread_state(GLThreadState *tstate)
  50 {
  51         int ret = 0;
  52
  53         AST(mutex_lock(&thread_key_mutex) == 1);
  54
  55         if (thread_key_inited == 0)
  56         {
  57                 if (pthread_key_create(&thread_key, NULL) != 0)
  58                 {
  59                         ERR("Failed to create thread key.\n");
  60                         ret = 0;
  61                         goto finish;
  62                 }
  63                 thread_key_inited = 1;
  64         }
  65
  66         if (pthread_setspecific(thread_key, (void *)tstate) != 0)
  67         {
  68                 ERR("Failed to set thread data.\n");
  69                 ret = 0;
  70                 goto finish;
  71         }
  72
  73         ret = 1;
  74         goto finish;
  75
  76 finish:
  77         AST(mutex_unlock(&thread_key_mutex) == 1);
  78
  79         return ret;
  80 }
  81
  82 GLThreadState *
  83 get_current_thread_state()
  84 {
  85         GLThreadState *ret = NULL;
  86         if (thread_key_inited)
  87         {
  88                 ret = (GLThreadState *)pthread_getspecific(thread_key);
  89         }
  90         goto finish;
  91
  92 finish:
  93         return ret;
  94 }
  95