2a5382a97b
Named mutexes are used for inter-process synchronization, using them to synchronize threads of a single process is just begging for trouble when running multiple instances of the application.
170 lines
2.7 KiB
C
170 lines
2.7 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Implement threads and mutexes for the Win32 platform.
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*
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*
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*
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* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
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* Fred N. van Kempen, <decwiz@yahoo.com>
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*
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* Copyright 2008-2018 Sarah Walker.
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* Copyright 2017,2018 Fred N. van Kempen.
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*/
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#define UNICODE
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#define BITMAP WINDOWS_BITMAP
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#include <windows.h>
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#include <windowsx.h>
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#include <process.h>
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#undef BITMAP
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include <86box/86box.h>
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#include <86box/plat.h>
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typedef struct {
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HANDLE handle;
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} win_event_t;
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thread_t *
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thread_create(void (*func)(void *param), void *param)
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{
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uintptr_t bt = _beginthread(func, 0, param);
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return((thread_t *)bt);
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}
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void
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thread_kill(void *arg)
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{
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if (arg == NULL) return;
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TerminateThread(arg, 0);
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}
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int
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thread_wait(thread_t *arg, int timeout)
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{
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if (arg == NULL) return(0);
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if (timeout == -1)
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timeout = INFINITE;
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if (WaitForSingleObject(arg, timeout)) return(1);
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return(0);
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}
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event_t *
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thread_create_event(void)
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{
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win_event_t *ev = malloc(sizeof(win_event_t));
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ev->handle = CreateEvent(NULL, FALSE, FALSE, NULL);
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return((event_t *)ev);
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}
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void
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thread_set_event(event_t *arg)
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{
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win_event_t *ev = (win_event_t *)arg;
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if (arg == NULL) return;
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SetEvent(ev->handle);
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}
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void
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thread_reset_event(event_t *arg)
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{
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win_event_t *ev = (win_event_t *)arg;
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if (arg == NULL) return;
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ResetEvent(ev->handle);
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}
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int
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thread_wait_event(event_t *arg, int timeout)
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{
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win_event_t *ev = (win_event_t *)arg;
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if (arg == NULL) return(0);
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if (ev->handle == NULL) return(0);
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if (timeout == -1)
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timeout = INFINITE;
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if (WaitForSingleObject(ev->handle, timeout)) return(1);
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return(0);
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}
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void
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thread_destroy_event(event_t *arg)
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{
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win_event_t *ev = (win_event_t *)arg;
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if (arg == NULL) return;
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CloseHandle(ev->handle);
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free(ev);
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}
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mutex_t *
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thread_create_mutex(void)
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{
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return((mutex_t*)CreateMutex(NULL, FALSE, NULL));
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}
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void
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thread_close_mutex(mutex_t *mutex)
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{
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if (mutex == NULL) return;
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CloseHandle((HANDLE)mutex);
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}
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int
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thread_wait_mutex(mutex_t *mutex)
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{
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if (mutex == NULL) return(0);
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DWORD dwres = WaitForSingleObject((HANDLE)mutex, INFINITE);
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if (dwres == WAIT_OBJECT_0) return(1);
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return(0);
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}
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int
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thread_release_mutex(mutex_t *mutex)
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{
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if (mutex == NULL) return(0);
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return(!!ReleaseMutex((HANDLE)mutex));
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}
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