ObjFW  Check-in [fa79bc173e]

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Comment:Add of_thread_yield()
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SHA3-256: fa79bc173ef8193b3f827c95e2c63fd2db7ec917661578c51fb8c968d2a2cb27
User & Date: js on 2016-04-18 21:48:08
Other Links: manifest | tags
Context
2016-04-23
09:43
Never end enums with a comma check-in: 3572e824c6 user: js tags: trunk
2016-04-18
21:48
Add of_thread_yield() check-in: fa79bc173e user: js tags: trunk
21:40
Move of_once() to threading.m check-in: 3f31bd034d user: js tags: trunk
Changes
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Modified src/threading.h from [b27d0410b9] to [adb5774a4e].

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	return !pthread_key_delete(key);
#elif defined(OF_WINDOWS)
	return TlsFree(key);
#else
# error of_tlskey_free not implemented!
#endif
}

static OF_INLINE void
of_thread_yield(void)
{
#if defined(OF_HAVE_SCHED_YIELD)
	sched_yield();
#elif defined(OF_WINDOWS)
	Sleep(0);
#endif
}

static OF_INLINE bool
of_spinlock_new(of_spinlock_t *spinlock)
{
#if defined(OF_HAVE_ATOMIC_OPS)
	*spinlock = 0;
	return true;
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#endif
}

static OF_INLINE bool
of_spinlock_lock(of_spinlock_t *spinlock)
{
#if defined(OF_HAVE_ATOMIC_OPS)
# if defined(OF_HAVE_SCHED_YIELD) || defined(OF_WINDOWS)
	size_t i;

	for (i = 0; i < OF_SPINCOUNT; i++)
		if (of_spinlock_trylock(spinlock))
			return true;

	while (!of_spinlock_trylock(spinlock))
#  ifndef OF_WINDOWS
		sched_yield();
		of_thread_yield();
#  else
		Sleep(0);
#  endif
# else
	while (!of_spinlock_trylock(spinlock));
# endif

	return true;
#elif defined(OF_HAVE_PTHREAD_SPINLOCKS)
	return !pthread_spin_lock(spinlock);
#else
	return of_mutex_lock(spinlock);
#endif
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Modified src/threading.m from [acfd94987f] to [656c95cd33].

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#ifndef OF_HAVE_PTHREADS
void
of_once(of_once_t *control, void (*func)(void))
{
	if (of_atomic_int_cmpswap(control, 0, 1)) {
		func();
		of_atomic_int_inc(control);
	} else {
	} else
		while (*control == 1)
# if defined(HAVE_SCHED_YIELD)
			sched_yield();
			of_thread_yield();
# elif defined(OF_WINDOWS)
			Sleep(0);
# else
			;
# endif
	}
}
#endif

#if !defined(OF_HAVE_RECURSIVE_PTHREAD_MUTEXES) && !defined(OF_WINDOWS)
bool
of_rmutex_new(of_rmutex_t *rmutex)
{
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Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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