SDL 线程

其实和 C 的线程使用差不多，只是又封装了一层而已。

#include <stdio.h>
#include <SDL2/SDL.h>

SDL_mutex* mutex;
SDL_cond* cond;

int sdl_work_func(void* v) {

    SDL_LockMutex(mutex);

    printf("sdl_work_func lock mutex\n");
    printf("sdl_work_func begin wait condition\n");

    SDL_CondWait(cond, mutex);

    printf("sdl_work_fun get condtion\n");

    SDL_UnlockMutex(mutex);

    return 0;
}

int main(int argc, char* argv[]) {

    mutex = SDL_CreateMutex();
    cond = SDL_CreateCond();

    SDL_Thread* t = SDL_CreateThread(sdl_work_func, "func", NULL);

    for(int i = 0; i < 5; i++) {
        printf("wait %d\n", i);
    }

    SDL_LockMutex(mutex);

    printf("main get mutex\n");

    SDL_CondSignal(cond);

    printf("main send signal\n");

    for(int i = 0; i < 50000; i++) {

    }

    SDL_UnlockMutex(mutex);

    printf("main unlock mutex\n");

    SDL_WaitThread(t, NULL);
    SDL_DestroyMutex(mutex);
    SDL_DestroyCond(cond);

    return 0;
}