163 lines
3.0 KiB
C
163 lines
3.0 KiB
C
/*
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* Copyright (c) 2014 Hugh Bailey <obs.jim@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "bmem.h"
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#include "threading.h"
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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struct os_event_data {
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HANDLE handle;
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};
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struct os_sem_data {
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HANDLE handle;
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};
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int os_event_init(os_event_t *event, enum os_event_type type)
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{
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HANDLE handle;
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struct os_event_data *data;
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handle = CreateEvent(NULL, (type == OS_EVENT_TYPE_MANUAL), FALSE, NULL);
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if (!handle)
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return -1;
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data = bmalloc(sizeof(struct os_event_data));
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data->handle = handle;
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*event = data;
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return 0;
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}
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void os_event_destroy(os_event_t event)
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{
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if (event) {
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CloseHandle(event->handle);
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bfree(event);
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}
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}
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int os_event_wait(os_event_t event)
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{
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DWORD code;
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if (!event)
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return EINVAL;
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code = WaitForSingleObject(event->handle, INFINITE);
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if (code != WAIT_OBJECT_0)
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return EINVAL;
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return 0;
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}
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int os_event_timedwait(os_event_t event, unsigned long milliseconds)
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{
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DWORD code;
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if (!event)
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return EINVAL;
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code = WaitForSingleObject(event->handle, milliseconds);
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if (code == WAIT_TIMEOUT)
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return ETIMEDOUT;
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else if (code != WAIT_OBJECT_0)
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return EINVAL;
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return 0;
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}
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int os_event_try(os_event_t event)
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{
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DWORD code;
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if (!event)
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return EINVAL;
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code = WaitForSingleObject(event->handle, 0);
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if (code == WAIT_TIMEOUT)
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return EAGAIN;
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else if (code != WAIT_OBJECT_0)
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return EINVAL;
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return 0;
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}
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int os_event_signal(os_event_t event)
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{
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if (!event)
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return EINVAL;
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if (!SetEvent(event->handle))
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return EINVAL;
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return 0;
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}
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void os_event_reset(os_event_t event)
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{
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if (!event)
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return;
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ResetEvent(event->handle);
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}
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int os_sem_init(os_sem_t *sem, int value)
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{
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HANDLE handle = CreateSemaphore(NULL, (LONG)value, 0x7FFFFFFF, NULL);
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if (!handle)
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return -1;
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*sem = bzalloc(sizeof(struct os_sem_data));
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(*sem)->handle = handle;
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return 0;
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}
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void os_sem_destroy(os_sem_t sem)
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{
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if (sem) {
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CloseHandle(sem->handle);
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bfree(sem);
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}
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}
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int os_sem_post(os_sem_t sem)
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{
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if (!sem) return -1;
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return ReleaseSemaphore(sem->handle, 1, NULL) ? 0 : -1;
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}
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int os_sem_wait(os_sem_t sem)
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{
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DWORD ret;
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if (!sem) return -1;
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ret = WaitForSingleObject(sem->handle, INFINITE);
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return (ret == WAIT_OBJECT_0) ? 0 : -1;
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}
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long os_atomic_inc_long(volatile long *val)
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{
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return InterlockedIncrement(val);
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}
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long os_atomic_dec_long(volatile long *val)
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{
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return InterlockedDecrement(val);
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}
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