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wownero/src/crypto/c_threads.h

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2.7 KiB

// Copyright (c) 2019, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
/* Brain-dead simple portability wrapper over thread APIs for C */
#pragma once
#ifdef _WIN32
#include <windows.h>
#define CTHR_MUTEX_TYPE HANDLE
#define CTHR_MUTEX_INIT NULL
#define CTHR_MUTEX_LOCK(x) do { if (x == NULL) { \
HANDLE p = CreateMutex(NULL, FALSE, NULL); \
if (InterlockedCompareExchangePointer((PVOID*)&x, (PVOID)p, NULL) != NULL) \
CloseHandle(p); \
} WaitForSingleObject(x, INFINITE); } while(0)
#define CTHR_MUTEX_UNLOCK(x) ReleaseMutex(x)
#define CTHR_THREAD_TYPE HANDLE
#define CTHR_THREAD_RTYPE void
#define CTHR_THREAD_RETURN return
#define CTHR_THREAD_CREATE(thr, func, arg) thr = (HANDLE)_beginthread(func, 0, arg)
#define CTHR_THREAD_JOIN(thr) WaitForSingleObject(thr, INFINITE)
#else
#include <pthread.h>
#define CTHR_MUTEX_TYPE pthread_mutex_t
#define CTHR_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
#define CTHR_MUTEX_LOCK(x) pthread_mutex_lock(&x)
#define CTHR_MUTEX_UNLOCK(x) pthread_mutex_unlock(&x)
#define CTHR_THREAD_TYPE pthread_t
#define CTHR_THREAD_RTYPE void *
#define CTHR_THREAD_RETURN return NULL
#define CTHR_THREAD_CREATE(thr, func, arg) pthread_create(&thr, NULL, func, arg)
#define CTHR_THREAD_JOIN(thr) pthread_join(thr, NULL)
#endif