SDL_sysmutex.cpp File Reference

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

Include dependency graph for SDL_sysmutex.cpp:

Go to the source code of this file.

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_mutex* SDL_CreateMutex

(

void

)

Create a mutex, initialized unlocked.

Definition at line 38 of file SDL_sysmutex.cpp.

References mutex, NULL, SDL_OutOfMemory, and SDL_SetError.

{
    /* 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;
    }
}

void SDL_DestroyMutex

(

SDL_mutex *

mutex

)

Destroy a mutex.

Definition at line 56 of file SDL_sysmutex.cpp.

References mutex.

{
    if (mutex) {
        delete mutex;
    }
}

int SDL_mutexP

(

SDL_mutex *

mutex

)

Definition at line 66 of file SDL_sysmutex.cpp.

References SDL_mutex::cpp_mutex, NULL, and SDL_SetError.

{
    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;
    }
}

int SDL_mutexV

(

SDL_mutex *

mutex

)

Definition at line 100 of file SDL_sysmutex.cpp.

References SDL_mutex::cpp_mutex, NULL, and SDL_SetError.

{
    if (mutex == NULL) {
        SDL_SetError("Passed a NULL mutex");
        return -1;
    }

    mutex->cpp_mutex.unlock();
    return 0;
}

int SDL_TryLockMutex

(

SDL_mutex *

mutex

)

Try to lock the mutex

Returns

0, SDL_MUTEX_TIMEDOUT, or -1 on error

Definition at line 84 of file SDL_sysmutex.cpp.

References SDL_mutex::cpp_mutex, NULL, retval, SDL_MUTEX_TIMEDOUT, and SDL_SetError.

{
    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;
}