ObjFW  Diff

Differences From Artifact [b099b55bf8]:

  • File src/OFKernelEventObserver.m — part of check-in [220513a3f5] at 2015-05-09 18:13:19 on branch trunk — More OFKernelEventObserver refactoring

    This was necessary because select(), poll() and kevent() on FreeBSD and
    OS X would sometimes return 0 events, even if there are some, and
    sometimes return the correct number of events that were pending, meaning
    the number of events returned is unreliable. To make things worse,
    whether it returns 0 or the number of events that were pending is
    completely non-deterministic on both FreeBSD and OS X (running the same
    tests multiple times in a row would make it sometimes work and sometimes
    fail).

    In order to prevent code from depending on the return value of
    -[observeForTimeInterval:] (which would depend on select(), poll() and
    kevent() returning the correct number), OFKernelObserver no longer
    returns whether there were pending events. It is expected that
    -[observe] or -[observeForTimeInterval:] is just called in a loop as
    long as events should be handled.

    The tests have been changed as well to reflect this. What they do now is
    set a deadline and call -[observeForTimeInterval:] with a small timeout
    in a loop until the deadline is reached or all events have been handled.

    Note: DragonFlyBSD has not been tested, but will most likely behave like
    FreeBSD and OS X. (user: js, size: 7927) [annotate] [blame] [check-ins using]

To Artifact [b0c771eac2]:


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enum {
	QUEUE_ADD = 0,
	QUEUE_REMOVE = 1,
	QUEUE_READ = 0,
	QUEUE_WRITE = 2
};
#define QUEUE_ACTION (QUEUE_ADD | QUEUE_REMOVE)






@implementation OFKernelEventObserver
+ (void)initialize
{
	if (self != [OFKernelEventObserver class])
		return;








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enum {
	QUEUE_ADD = 0,
	QUEUE_REMOVE = 1,
	QUEUE_READ = 0,
	QUEUE_WRITE = 2
};
#define QUEUE_ACTION (QUEUE_ADD | QUEUE_REMOVE)

#ifdef __wii__
/* FIXME: Add a port registry for Wii */
static uint16_t freePort = 65535;
#endif

@implementation OFKernelEventObserver
+ (void)initialize
{
	if (self != [OFKernelEventObserver class])
		return;

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			    exceptionWithClass: [self class]];

		_cancelAddr.sin_family = AF_INET;
		_cancelAddr.sin_port = 0;
		_cancelAddr.sin_addr.s_addr = inet_addr("127.0.0.1");

# ifdef __wii__

		/* The Wii does not accept port 0 as "choose any free port" */
		_cancelAddr.sin_port = 65535;
# endif

		if (bind(_cancelFD[0], (struct sockaddr*)&_cancelAddr,
		    sizeof(_cancelAddr)))
			@throw [OFInitializationFailedException
			    exceptionWithClass: [self class]];








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			    exceptionWithClass: [self class]];

		_cancelAddr.sin_family = AF_INET;
		_cancelAddr.sin_port = 0;
		_cancelAddr.sin_addr.s_addr = inet_addr("127.0.0.1");

# ifdef __wii__
		_cancelAddr.sin_len = 8;
		/* The Wii does not accept port 0 as "choose any free port" */
		_cancelAddr.sin_port = freePort--;
# endif

		if (bind(_cancelFD[0], (struct sockaddr*)&_cancelAddr,
		    sizeof(_cancelAddr)))
			@throw [OFInitializationFailedException
			    exceptionWithClass: [self class]];

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}

- (void)cancel
{
#ifdef OF_HAVE_PIPE
	OF_ENSURE(write(_cancelFD[1], "", 1) > 0);
#else

	OF_ENSURE(sendto(_cancelFD[1], "", 1, 0, (struct sockaddr*)&_cancelAddr,
	    sizeof(_cancelAddr)) > 0);




#endif
}

- (void)OF_processReadBuffers
{
	id const *objects = [_readObjects objects];
	size_t i, count = [_readObjects count];







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}

- (void)cancel
{
#ifdef OF_HAVE_PIPE
	OF_ENSURE(write(_cancelFD[1], "", 1) > 0);
#else
# ifndef __wii__
	OF_ENSURE(sendto(_cancelFD[1], "", 1, 0,
	    (struct sockaddr*)&_cancelAddr, sizeof(_cancelAddr)) > 0);
# else
	OF_ENSURE(sendto(_cancelFD[1], "", 1, 0,
	    (struct sockaddr*)&_cancelAddr, 8) > 0);
# endif
#endif
}

- (void)OF_processReadBuffers
{
	id const *objects = [_readObjects objects];
	size_t i, count = [_readObjects count];