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SRW locks are available since Windows Vista. They work essentially like Linux futexes. In particular, they can be statically initialized, and do not require deinitialization. This makes them ideal for implementing PTHREAD_MUTEX_INITIALIZER. We still need CRITICAL_SECTION for recursive mutexes.
86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
#ifndef MP_WRAP_PTHREAD_H_
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#define MP_WRAP_PTHREAD_H_
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#include <windows.h>
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#include <sys/types.h>
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// Note: all pthread functions are mangled to make static linking easier.
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#define pthread_once m_pthread_once
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#define pthread_mutex_destroy m_pthread_mutex_destroy
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#define pthread_mutex_init m_pthread_mutex_init
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#define pthread_mutex_lock m_pthread_mutex_lock
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#define pthread_mutex_unlock m_pthread_mutex_unlock
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#define pthread_cond_timedwait m_pthread_cond_timedwait
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#define pthread_cond_wait m_pthread_cond_wait
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#define pthread_self m_pthread_self
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#define pthread_exit m_pthread_exit
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#define pthread_join m_pthread_join
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#define pthread_detach m_pthread_detach
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#define pthread_create m_pthread_create
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#define pthread_once_t INIT_ONCE
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#define PTHREAD_ONCE_INIT INIT_ONCE_STATIC_INIT
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int pthread_once(pthread_once_t *once_control, void (*init_routine)(void));
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typedef struct {
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char use_cs;
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union {
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SRWLOCK srw;
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CRITICAL_SECTION cs;
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} lock;
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} pthread_mutex_t;
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// Assume SRWLOCK_INIT is {0} so we can easily remain C89-compatible.
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#define PTHREAD_MUTEX_INITIALIZER {0}
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#define pthread_mutexattr_t int
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#define pthread_mutexattr_destroy(attr) (void)0
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#define pthread_mutexattr_init(attr) (*(attr) = 0)
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#define pthread_mutexattr_settype(attr, type) (*(attr) = (type))
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#define PTHREAD_MUTEX_RECURSIVE 1
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int pthread_mutex_destroy(pthread_mutex_t *mutex);
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int pthread_mutex_init(pthread_mutex_t *restrict mutex,
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const pthread_mutexattr_t *restrict attr);
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int pthread_mutex_lock(pthread_mutex_t *mutex);
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int pthread_mutex_unlock(pthread_mutex_t *mutex);
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#define pthread_cond_t CONDITION_VARIABLE
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#define pthread_condattr_t int
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#define PTHREAD_COND_INITIALIZER CONDITION_VARIABLE_INIT
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#define pthread_cond_init(cond, attr) InitializeConditionVariable(cond)
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#define pthread_cond_destroy(c) (void)0
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#define pthread_cond_broadcast(cond) WakeAllConditionVariable(cond)
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#define pthread_cond_signal(cond) WakeConditionVariable(cond)
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int pthread_cond_timedwait(pthread_cond_t *restrict cond,
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pthread_mutex_t *restrict mutex,
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const struct timespec *restrict abstime);
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int pthread_cond_wait(pthread_cond_t *restrict cond,
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pthread_mutex_t *restrict mutex);
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// Unusual, but allowed by POSIX.
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typedef struct {
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DWORD id;
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struct m_thread_info *info;
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} pthread_t;
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#define pthread_equal(a, b) ((a).id == (b).id)
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pthread_t pthread_self(void);
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void pthread_exit(void *retval);
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int pthread_join(pthread_t thread, void **retval);
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int pthread_detach(pthread_t thread);
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#define pthread_attr_t int
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int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
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void *(*start_routine) (void *), void *arg);
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#endif
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