torque
eace0bf8db
the readme is a ramble and there's no functionality (yet). couldn't ask for a better start.
114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/*
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* libusb synchronization on Microsoft Windows
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*
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* Copyright © 2010 Michael Plante <michael.plante@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef LIBUSB_THREADS_WINDOWS_H
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#define LIBUSB_THREADS_WINDOWS_H
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#define WINAPI_CHECK(expression) ASSERT_NE(expression, 0)
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#define USBI_MUTEX_INITIALIZER 0L
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typedef LONG usbi_mutex_static_t;
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static inline void usbi_mutex_static_lock(usbi_mutex_static_t *mutex)
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{
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while (InterlockedExchange(mutex, 1L) == 1L)
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SleepEx(0, TRUE);
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}
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static inline void usbi_mutex_static_unlock(usbi_mutex_static_t *mutex)
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{
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InterlockedExchange(mutex, 0L);
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}
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typedef CRITICAL_SECTION usbi_mutex_t;
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static inline void usbi_mutex_init(usbi_mutex_t *mutex)
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{
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InitializeCriticalSection(mutex);
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}
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static inline void usbi_mutex_lock(usbi_mutex_t *mutex)
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{
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EnterCriticalSection(mutex);
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}
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static inline void usbi_mutex_unlock(usbi_mutex_t *mutex)
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{
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LeaveCriticalSection(mutex);
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}
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static inline int usbi_mutex_trylock(usbi_mutex_t *mutex)
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{
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return TryEnterCriticalSection(mutex) != 0;
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}
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static inline void usbi_mutex_destroy(usbi_mutex_t *mutex)
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{
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DeleteCriticalSection(mutex);
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}
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#if !defined(HAVE_STRUCT_TIMESPEC) && !defined(_TIMESPEC_DEFINED)
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#define HAVE_STRUCT_TIMESPEC 1
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#define _TIMESPEC_DEFINED 1
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struct timespec {
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long tv_sec;
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long tv_nsec;
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};
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#endif /* HAVE_STRUCT_TIMESPEC || _TIMESPEC_DEFINED */
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typedef CONDITION_VARIABLE usbi_cond_t;
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static inline void usbi_cond_init(usbi_cond_t *cond)
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{
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InitializeConditionVariable(cond);
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}
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static inline void usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex)
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{
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WINAPI_CHECK(SleepConditionVariableCS(cond, mutex, INFINITE));
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}
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int usbi_cond_timedwait(usbi_cond_t *cond,
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usbi_mutex_t *mutex, const struct timeval *tv);
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static inline void usbi_cond_broadcast(usbi_cond_t *cond)
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{
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WakeAllConditionVariable(cond);
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}
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static inline void usbi_cond_destroy(usbi_cond_t *cond)
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{
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UNUSED(cond);
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}
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typedef DWORD usbi_tls_key_t;
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static inline void usbi_tls_key_create(usbi_tls_key_t *key)
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{
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*key = TlsAlloc();
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assert(*key != TLS_OUT_OF_INDEXES);
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}
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static inline void *usbi_tls_key_get(usbi_tls_key_t key)
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{
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return TlsGetValue(key);
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}
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static inline void usbi_tls_key_set(usbi_tls_key_t key, void *ptr)
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{
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WINAPI_CHECK(TlsSetValue(key, ptr));
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}
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static inline void usbi_tls_key_delete(usbi_tls_key_t key)
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{
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WINAPI_CHECK(TlsFree(key));
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}
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static inline unsigned int usbi_get_tid(void)
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{
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return (unsigned int)GetCurrentThreadId();
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}
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#endif /* LIBUSB_THREADS_WINDOWS_H */
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