1#ifndef THREADING_H
  2#define THREADING_H
  3
  4#include "common.h"
  5
  6#ifdef USE_PTHREADS
  7#include <pthread.h>
  8
  9#define THREAD_ENTRY void*
 10typedef THREAD_ENTRY (*ThreadEntry)(void*);
 11
 12typedef pthread_t Thread;
 13typedef pthread_mutex_t Mutex;
 14typedef pthread_cond_t Condition;
 15
 16static inline int MutexInit(Mutex* mutex) {
 17	return pthread_mutex_init(mutex, 0);
 18}
 19
 20static inline int MutexDeinit(Mutex* mutex) {
 21	return pthread_mutex_destroy(mutex);
 22}
 23
 24static inline int MutexLock(Mutex* mutex) {
 25	return pthread_mutex_lock(mutex);
 26}
 27
 28static inline int MutexUnlock(Mutex* mutex) {
 29	return pthread_mutex_unlock(mutex);
 30}
 31
 32static inline int ConditionInit(Condition* cond) {
 33	return pthread_cond_init(cond, 0);
 34}
 35
 36static inline int ConditionDeinit(Condition* cond) {
 37	return pthread_cond_destroy(cond);
 38}
 39
 40static inline int ConditionWait(Condition* cond, Mutex* mutex) {
 41	return pthread_cond_wait(cond, mutex);
 42}
 43
 44static inline int ConditionWake(Condition* cond) {
 45	return pthread_cond_broadcast(cond);
 46}
 47
 48static inline int ThreadCreate(Thread* thread, ThreadEntry entry, void* context) {
 49	return pthread_create(thread, 0, entry, context);
 50}
 51
 52static inline int ThreadJoin(Thread thread) {
 53	return pthread_join(thread, 0);
 54}
 55
 56#else
 57#define _WIN32_WINNT 0x0600
 58#include <windows.h>
 59#define THREAD_ENTRY DWORD WINAPI
 60typedef THREAD_ENTRY ThreadEntry(LPVOID);
 61
 62typedef HANDLE Thread;
 63typedef CRITICAL_SECTION Mutex;
 64typedef CONDITION_VARIABLE Condition;
 65
 66static inline int MutexInit(Mutex* mutex) {
 67	InitializeCriticalSection(mutex);
 68	return GetLastError();
 69}
 70
 71static inline int MutexDeinit(Mutex* mutex) {
 72	DeleteCriticalSection(mutex);
 73	return GetLastError();
 74}
 75
 76static inline int MutexLock(Mutex* mutex) {
 77	EnterCriticalSection(mutex);
 78	return GetLastError();
 79}
 80
 81static inline int MutexUnlock(Mutex* mutex) {
 82	LeaveCriticalSection(mutex);
 83	return GetLastError();
 84}
 85
 86static inline int ConditionInit(Condition* cond) {
 87	InitializeConditionVariable(cond);
 88	return GetLastError();
 89}
 90
 91static inline int ConditionDeinit(Condition* cond) {
 92	// This is a no-op on Windows
 93	UNUSED(cond);
 94	return 0;
 95}
 96
 97static inline int ConditionWait(Condition* cond, Mutex* mutex) {
 98	SleepConditionVariableCS(cond, mutex, INFINITE);
 99	return GetLastError();
100}
101
102static inline int ConditionWake(Condition* cond) {
103	WakeAllConditionVariable(cond);
104	return GetLastError();
105}
106
107static inline int ThreadCreate(Thread* thread, ThreadEntry entry, void* context) {
108	*thread = CreateThread(NULL, 0, entry, context, 0, 0);
109	return GetLastError();
110}
111
112static inline int ThreadJoin(Thread thread) {
113	DWORD error = WaitForSingleObject(thread, INFINITE);
114	if (error == WAIT_FAILED) {
115		return GetLastError();
116	}
117	return 0;
118}
119#endif
120
121#endif