src/coregl_thread_pthread.c

   1 #include "coregl_internal.h"
   2
   3 //////////////////////////////////////////////////////////////////////////
   4 // Need implement this
   5 int mutex_init(Mutex *mt);
   6 int mutex_lock(Mutex *mt);
   7 int mutex_unlock(Mutex *mt);
   8 int get_current_thread();
   9 int set_current_thread_state(GLThreadState *tstate);
  10 GLThreadState * get_current_thread_state();
  11 //////////////////////////////////////////////////////////////////////////
  12
  13 static Mutex            thread_key_mutex = MUTEX_INITIALIZER;
  14 static int              thread_key_inited = 0;
  15 static pthread_key_t    thread_key = 0;
  16
  17 int
  18 mutex_init(Mutex *mt)
  19 {
  20         int ret = 0;
  21
  22         if (pthread_mutex_init(mt, NULL) == 0)
  23                 ret = 1;
  24         else
  25                 ret = 0;
  26
  27         return ret;
  28 }
  29
  30 int
  31 mutex_lock(Mutex *mt)
  32 {
  33         int ret = 0;
  34
  35         if (pthread_mutex_lock(mt) == 0)
  36                 ret = 1;
  37         else
  38                 ret = 0;
  39
  40         return ret;
  41 }
  42
  43 int
  44 mutex_unlock(Mutex *mt)
  45 {
  46         int ret = 0;
  47
  48         if (pthread_mutex_unlock(mt) == 0)
  49                 ret = 1;
  50         else
  51                 ret = 0;
  52
  53         return ret;
  54 }
  55
  56 int
  57 get_current_thread()
  58 {
  59         return pthread_self();
  60 }
  61
  62 int
  63 set_current_thread_state(GLThreadState *tstate)
  64 {
  65         int ret = 0;
  66
  67         AST(mutex_lock(&thread_key_mutex) == 1);
  68
  69         if (thread_key_inited == 0)
  70         {
  71                 if (pthread_key_create(&thread_key, NULL) != 0)
  72                 {
  73                         COREGL_ERR("Failed to create thread key.\n");
  74                         ret = 0;
  75                         goto finish;
  76                 }
  77                 thread_key_inited = 1;
  78         }
  79
  80         if (pthread_setspecific(thread_key, (void *)tstate) != 0)
  81         {
  82                 COREGL_ERR("Failed to set thread data.\n");
  83                 ret = 0;
  84                 goto finish;
  85         }
  86
  87         ret = 1;
  88         goto finish;
  89
  90 finish:
  91         AST(mutex_unlock(&thread_key_mutex) == 1);
  92
  93         return ret;
  94 }
  95
  96 GLThreadState *
  97 get_current_thread_state()
  98 {
  99         GLThreadState *ret = NULL;
 100
 101         if (thread_key_inited)
 102         {
 103                 ret = (GLThreadState *)pthread_getspecific(thread_key);
 104         }
 105         goto finish;
 106
 107 finish:
 108         return ret;
 109 }
 110