SDL  2.0
SDL_systls.c File Reference
#include "../../SDL_internal.h"
#include "SDL_thread.h"
#include "../SDL_thread_c.h"
#include <pthread.h>
+ Include dependency graph for SDL_systls.c:

Go to the source code of this file.

Macros

#define INVALID_PTHREAD_KEY   ((pthread_key_t)-1)
 

Functions

SDL_TLSDataSDL_SYS_GetTLSData ()
 
int SDL_SYS_SetTLSData (SDL_TLSData *data)
 

Variables

static pthread_key_t thread_local_storage = INVALID_PTHREAD_KEY
 
static SDL_bool generic_local_storage = SDL_FALSE
 

Macro Definition Documentation

◆ INVALID_PTHREAD_KEY

#define INVALID_PTHREAD_KEY   ((pthread_key_t)-1)

Definition at line 28 of file SDL_systls.c.

Referenced by SDL_SYS_GetTLSData().

Function Documentation

◆ SDL_SYS_GetTLSData()

SDL_TLSData* SDL_SYS_GetTLSData ( )

Definition at line 34 of file SDL_systls.c.

References generic_local_storage, INVALID_PTHREAD_KEY, lock, NULL, SDL_AtomicLock, SDL_AtomicUnlock, SDL_Generic_GetTLSData(), SDL_MemoryBarrierAcquire, SDL_MemoryBarrierRelease, SDL_TRUE, and thread_local_storage.

35 {
37  static SDL_SpinLock lock;
38  SDL_AtomicLock(&lock);
40  pthread_key_t storage;
41  if (pthread_key_create(&storage, NULL) == 0) {
43  thread_local_storage = storage;
44  } else {
46  }
47  }
48  SDL_AtomicUnlock(&lock);
49  }
51  return SDL_Generic_GetTLSData();
52  }
54  return (SDL_TLSData *)pthread_getspecific(thread_local_storage);
55 }
#define SDL_AtomicLock
SDL_TLSData * SDL_Generic_GetTLSData()
Definition: SDL_thread.c:124
#define SDL_MemoryBarrierRelease()
Definition: SDL_atomic.h:180
#define SDL_MemoryBarrierAcquire()
Definition: SDL_atomic.h:181
#define SDL_AtomicUnlock
#define NULL
Definition: begin_code.h:143
static pthread_key_t thread_local_storage
Definition: SDL_systls.c:30
SDL_mutex * lock
Definition: SDL_events.c:75
static SDL_bool generic_local_storage
Definition: SDL_systls.c:31
int SDL_SpinLock
Definition: SDL_atomic.h:89
#define INVALID_PTHREAD_KEY
Definition: SDL_systls.c:28

◆ SDL_SYS_SetTLSData()

int SDL_SYS_SetTLSData ( SDL_TLSData data)

Definition at line 58 of file SDL_systls.c.

References generic_local_storage, SDL_Generic_SetTLSData(), SDL_SetError, and thread_local_storage.

59 {
61  return SDL_Generic_SetTLSData(data);
62  }
63  if (pthread_setspecific(thread_local_storage, data) != 0) {
64  return SDL_SetError("pthread_setspecific() failed");
65  }
66  return 0;
67 }
int SDL_Generic_SetTLSData(SDL_TLSData *storage)
Definition: SDL_thread.c:163
#define SDL_SetError
static pthread_key_t thread_local_storage
Definition: SDL_systls.c:30
static SDL_bool generic_local_storage
Definition: SDL_systls.c:31

Variable Documentation

◆ generic_local_storage

SDL_bool generic_local_storage = SDL_FALSE
static

Definition at line 31 of file SDL_systls.c.

Referenced by SDL_SYS_GetTLSData(), and SDL_SYS_SetTLSData().

◆ thread_local_storage

pthread_key_t thread_local_storage = INVALID_PTHREAD_KEY
static

Definition at line 30 of file SDL_systls.c.

Referenced by SDL_SYS_GetTLSData(), and SDL_SYS_SetTLSData().