#include "../../SDL_internal.h"
#include "SDL_thread.h"
#include "SDL_systhread_c.h"
#include <system_error>
#include "SDL_sysmutex_c.h"
#include <Windows.h>

Include dependency graph for SDL_sysmutex.cpp:

Functions
SDL_mutex *	SDL_CreateMutex (void)

void	SDL_DestroyMutex (SDL_mutex *mutex)

int	SDL_mutexP (SDL_mutex *mutex)

int	SDL_TryLockMutex (SDL_mutex *mutex)

int	SDL_mutexV (SDL_mutex *mutex)

Function Documentation

◆ SDL_CreateMutex()

SDL_mutex* SDL_CreateMutex ( void )

Create a mutex, initialized unlocked.

Definition at line 37 of file SDL_sysmutex.cpp.

 {
     /* Allocate and initialize the mutex */
     try {
         SDL_mutex * mutex = new SDL_mutex;
         return mutex;
     } catch (std::system_error & ex) {
         SDL_SetError("unable to create a C++ mutex: code=%d; %s", ex.code(), ex.what());
         return NULL;
     } catch (std::bad_alloc &) {
         SDL_OutOfMemory();
         return NULL;
     }
 }

References mutex, NULL, SDL_mutex::owner, SDL_mutex::recursive, SDL_CreateSemaphore, SDL_free, SDL_malloc, SDL_OutOfMemory, SDL_SetError, and SDL_mutex::sem.

◆ SDL_DestroyMutex()

void SDL_DestroyMutex ( SDL_mutex * mutex )

Destroy a mutex.

Definition at line 55 of file SDL_sysmutex.cpp.

 {
     if (mutex) {
         delete mutex;
     }
 }

References mutex, SDL_DestroySemaphore, SDL_free, and SDL_mutex::sem.

◆ SDL_mutexP()

int SDL_mutexP ( SDL_mutex * mutex )

Definition at line 65 of file SDL_sysmutex.cpp.

 {
     if (mutex == NULL) {
         SDL_SetError("Passed a NULL mutex");
         return -1;
     }
  
     try {
         mutex->cpp_mutex.lock();
         return 0;
     } catch (std::system_error & ex) {
         SDL_SetError("unable to lock a C++ mutex: code=%d; %s", ex.code(), ex.what());
         return -1;
     }
 }

References SDL_mutex::cpp_mutex, mutex, NULL, and SDL_SetError.

◆ SDL_mutexV()

int SDL_mutexV ( SDL_mutex * mutex )

Definition at line 99 of file SDL_sysmutex.cpp.

 {
     if (mutex == NULL) {
         SDL_SetError("Passed a NULL mutex");
         return -1;
     }
  
     mutex->cpp_mutex.unlock();
     return 0;
 }

References SDL_mutex::cpp_mutex, mutex, NULL, and SDL_SetError.

◆ SDL_TryLockMutex()

int SDL_TryLockMutex ( SDL_mutex * mutex )

Try to lock the mutex

Returns: 0, SDL_MUTEX_TIMEDOUT, or -1 on error

Definition at line 83 of file SDL_sysmutex.cpp.

 {
     int retval = 0;
     if (mutex == NULL) {
         return SDL_SetError("Passed a NULL mutex");
     }
  
     if (mutex->cpp_mutex.try_lock() == false) {
         retval = SDL_MUTEX_TIMEDOUT;
     }
     return retval;
 }