/*************************************************************************/
/*  rw_lock_windows.cpp                                                  */
/*************************************************************************/
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
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#if defined(WINDOWS_ENABLED)

#include "rw_lock_windows.h"

#include "error_macros.h"
#include "os/memory.h"
#include <stdio.h>

void RWLockWindows::read_lock() {

	AcquireSRWLockShared(&lock);
}

void RWLockWindows::read_unlock() {

	ReleaseSRWLockShared(&lock);
}

Error RWLockWindows::read_try_lock() {

	if (TryAcquireSRWLockShared(&lock) == 0) {
		return ERR_BUSY;
	} else {
		return OK;
	}
}

void RWLockWindows::write_lock() {

	AcquireSRWLockExclusive(&lock);
}

void RWLockWindows::write_unlock() {

	ReleaseSRWLockExclusive(&lock);
}

Error RWLockWindows::write_try_lock() {
	if (TryAcquireSRWLockExclusive(&lock) == 0) {
		return ERR_BUSY;
	} else {
		return OK;
	}
}

RWLock *RWLockWindows::create_func_windows() {

	return memnew(RWLockWindows);
}

void RWLockWindows::make_default() {

	create_func = create_func_windows;
}

RWLockWindows::RWLockWindows() {

	InitializeSRWLock(&lock);
}

RWLockWindows::~RWLockWindows() {
}

#endif