48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/*
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* This file is part of the Pico Keys SDK distribution (https://github.com/polhenarejos/pico-keys-sdk).
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* Copyright (c) 2022 Pol Henarejos.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifdef _MSC_VER
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#ifndef _SEMAPHORE_H_
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#define _SEMAPHORE_H_
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#include <windows.h>
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typedef struct {
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HANDLE handle;
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} sem_t;
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static inline int sem_init(sem_t *sem, int pshared, unsigned int value) {
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(void)pshared;
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sem->handle = CreateSemaphore(NULL, value, 0x7FFFFFFF, NULL);
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return sem->handle ? 0 : -1;
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}
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static inline int sem_wait(sem_t *sem) {
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return WaitForSingleObject(sem->handle, INFINITE) == WAIT_OBJECT_0 ? 0 : -1;
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}
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static inline int sem_post(sem_t *sem) {
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return ReleaseSemaphore(sem->handle, 1, NULL) ? 0 : -1;
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}
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static inline int sem_destroy(sem_t *sem) {
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return CloseHandle(sem->handle) ? 0 : -1;
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}
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#endif // _SEMAPHORE_H_
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#endif // _MSC_VER
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