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np2_thread.h
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np2_thread.h
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/* === NP2 threading library === (c) 2019 AZO */
#ifndef _NP2_THREAD_H_
#define _NP2_THREAD_H_
#ifdef SUPPORT_NP2_THREAD
#include <compiler.h>
#if defined(NP2_THREAD_WIN)
#include <windows.h>
#include <process.h>
#elif defined(NP2_THREAD_POSIX)
#include <pthread.h>
#include <semaphore.h>
#include <unistd.h>
#elif defined(NP2_SDL)
#if defined(USE_SDL_CONFIG)
#include "SDL.h"
#else
#include <SDL.h>
#endif
#elif defined(__LIBRETRO__)
#include <rthreads/rthreads.h>
#include <retro_timers.h>
#include <libretro/rsemaphore.h>
#endif
#if defined(NP2_THREAD_WIN)
typedef HANDLE NP2_Thread_t;
#elif defined(NP2_THREAD_POSIX)
typedef pthread_t NP2_Thread_t;
#elif defined(NP2_SDL)
typedef SDL_Thread* NP2_Thread_t;
#elif defined(__LIBRETRO__)
typedef sthread_t* NP2_Thread_t;
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* --- thread --- */
/* for caller */
extern void NP2_Thread_Create(NP2_Thread_t* pth, void*(*thread)(void*), void* param);
/* for caller */
extern void NP2_Thread_Destroy(NP2_Thread_t* pth);
/* for callee */
extern int NP2_Thread_Exit(void* retval);
/* for caller */
extern void NP2_Thread_Wait(NP2_Thread_t* pth, void** retval);
/* for caller */
extern void NP2_Thread_Detach(NP2_Thread_t* pth);
/* --- semaphore --- */
#if defined(NP2_THREAD_WIN)
typedef HANDLE NP2_Semaphore_t;
#elif defined(NP2_THREAD_POSIX)
typedef sem_t NP2_Semaphore_t;
#elif defined(NP2_SDL)
typedef SDL_sem* NP2_Semaphore_t;
#elif defined(__LIBRETRO__)
typedef ssem_t* NP2_Semaphore_t;
#endif
/* for caller */
extern void NP2_Semaphore_Create(NP2_Semaphore_t* psem, const unsigned int initcount);
/* for caller */
extern void NP2_Semaphore_Destroy(NP2_Semaphore_t* psem);
/* for caller/callee */
extern void NP2_Semaphore_Wait(NP2_Semaphore_t* psem);
/* for caller/callee */
extern void NP2_Semaphore_Release(NP2_Semaphore_t* psem);
/* --- wait queue --- */
typedef enum {
NP2_WAITQUEUE_TYPE_RING = 0,
NP2_WAITQUEUE_TYPE_RINGINT,
NP2_WAITQUEUE_TYPE_LIST,
} NP2_WaitQueue_Type_t;
typedef struct NP2_WaitQueue_List_Item_t_ {
struct NP2_WaitQueue_List_Item_t_* next;
void* param;
} NP2_WaitQueue_List_Item_t;
typedef struct NP2_WaitQueue_Ring_t_ {
NP2_WaitQueue_Type_t type;
void* params;
unsigned int maxcount;
unsigned int current;
unsigned int queued;
} NP2_WaitQueue_Ring_t;
typedef struct NP2_WaitQueue_List_t_ {
NP2_WaitQueue_Type_t type;
NP2_WaitQueue_List_Item_t* first;
NP2_WaitQueue_List_Item_t* last;
} NP2_WaitQueue_List_t;
typedef union NP2_WaitQueue_t_ {
NP2_WaitQueue_Ring_t ring;
NP2_WaitQueue_List_t list;
} NP2_WaitQueue_t;
/* for caller (ring) */
extern void NP2_WaitQueue_Ring_Create(NP2_WaitQueue_t* pque, unsigned int maxcount);
/* for caller (ringint) */
extern void NP2_WaitQueue_RingInt_Create(NP2_WaitQueue_t* pque, unsigned int maxcount);
/* for caller (list) */
extern void NP2_WaitQueue_List_Create(NP2_WaitQueue_t* pque);
/* for caller (ring,ringint,list) */
extern void NP2_WaitQueue_Destroy(NP2_WaitQueue_t* pque);
/* for caller (ringint) */
extern void NP2_WaitQueue_RingInt_Append(NP2_WaitQueue_t* pque, NP2_Semaphore_t* psem, const int param);
/* for caller (ring,list) */
extern void NP2_WaitQueue_Append(NP2_WaitQueue_t* pque, NP2_Semaphore_t* psem, void* param);
/* for callee (ringint) */
extern void NP2_WaitQueue_RingInt_Shift(NP2_WaitQueue_t* pque, NP2_Semaphore_t* psem, int* param);
/* for callee (ring,list) */
extern void NP2_WaitQueue_Shift(NP2_WaitQueue_t* pque, NP2_Semaphore_t* psem, void** param);
/* for callee (ringint) */
extern void NP2_WaitQueue_RingInt_Shift_Wait(NP2_WaitQueue_t* pque, NP2_Semaphore_t* psem, int* param);
/* for callee (ring,list) */
extern void NP2_WaitQueue_Shift_Wait(NP2_WaitQueue_t* pque, NP2_Semaphore_t* psem, void** param);
/* --- sleep ms --- */
#if defined(NP2_THREAD_WIN)
#define NP2_Sleep_ms(ms) Sleep(ms);
#elif defined(NP2_THREAD_POSIX)
#define NP2_Sleep_ms(ms) usleep(ms * 1000);
#elif defined(NP2_SDL)
#define NP2_Sleep_ms(ms) SDL_Delay(ms);
#elif defined(__LIBRETRO__)
#define NP2_Sleep_ms(ms) retro_sleep(ms);
#endif
#if !defined(_WINDOWS)
extern BOOL QueryPerformanceCounter(LARGE_INTEGER* count);
extern BOOL QueryPerformanceFrequency(LARGE_INTEGER* freq);
#endif
#ifdef __cplusplus
}
#endif
#else // SUPPORT_NP2_THREAD
#define NP2_Sleep_ms(ms)
#endif // SUPPORT_NP2_THREAD
#endif /* _NP2_THREAD_H_ */