ObjFW  Check-in [97da88f926]

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#include "config.h"

#include <assert.h>
#include <errno.h>
#include <math.h>

#include <fcntl.h>
#include <unistd.h>

#include <sys/types.h>
#include <sys/event.h>
#include <sys/time.h>

#import "OFKernelEventObserver.h"
#import "OFKernelEventObserver+Private.h"
#import "OFKernelEventObserver_kqueue.h"
#import "OFDataArray.h"
#import "OFArray.h"

#import "OFInitializationFailedException.h"
#import "OFObserveFailedException.h"
#import "OFOutOfRangeException.h"

#import "socket_helpers.h"

#define EVENTLIST_SIZE 64

@implementation OFKernelEventObserver_kqueue

}

- (bool)observeForTimeInterval: (of_time_interval_t)timeInterval
{
	void *pool = objc_autoreleasePoolPush();
	struct timespec timeout;
	struct kevent eventList[EVENTLIST_SIZE];
	int i, events, errNo, realEvents = 0;

	timeout.tv_sec = (time_t)timeInterval;
	timeout.tv_nsec = lrint((timeInterval - timeout.tv_sec) * 1000000000);

	/*
	 * Make sure to keep the streams retained and thus the file descriptors
	 * valid until the actual change has been performed.
	 */
	[self OF_processQueueAndStoreRemovedIn: _removedArray];

	if ([self OF_processCache]) {
		objc_autoreleasePoolPop(pool);
		return true;
	}

	objc_autoreleasePoolPop(pool);

	events = kevent(_kernelQueue, [_changeList items],
	    (int)[_changeList count], eventList, EVENTLIST_SIZE,
	    (timeInterval == -1 ? NULL : &timeout));
	errNo = errno;

	[_removedArray removeAllObjects];

	if (events < 0)
		return [OFObserveFailedException exceptionWithObserver: self
								 errNo: errNo];

	[_changeList removeAllItems];

	if (events == 0)
		return false;

	for (i = 0; i < events; i++) {

 * file.
 */

#define __NO_EXT_QNX

#include "config.h"

#include <errno.h>

#ifdef HAVE_POLL_H
# include <poll.h>
#endif

#import "OFKernelEventObserver.h"
#import "OFKernelEventObserver+Private.h"
#import "OFKernelEventObserver_poll.h"
#import "OFDataArray.h"

#import "OFObserveFailedException.h"
#import "OFOutOfRangeException.h"

#import "socket_helpers.h"

#ifdef __wii__
# define pollfd pollsd
# define fd socket

			   withEvents: POLLOUT];
}

- (bool)observeForTimeInterval: (of_time_interval_t)timeInterval
{
	void *pool = objc_autoreleasePoolPush();
	struct pollfd *FDs;
	int events;
	size_t i, nFDs, realEvents = 0;

	[self OF_processQueueAndStoreRemovedIn: nil];

	if ([self OF_processCache]) {
		objc_autoreleasePoolPop(pool);
		return true;
	}

	objc_autoreleasePoolPop(pool);

	FDs = [_FDs items];
	nFDs = [_FDs count];

#ifdef OPEN_MAX
	if (nFDs > OPEN_MAX)
		@throw [OFOutOfRangeException exception];
#endif

	events = poll(FDs, (nfds_t)nFDs,
	    (int)(timeInterval != -1 ? timeInterval * 1000 : -1));

	if (events < 0)
		@throw [OFObserveFailedException exceptionWithObserver: self
								 errNo: errno];

	if (events == 0)
		return false;

	for (i = 0; i < nFDs; i++) {
		pool = objc_autoreleasePoolPush();

		if (FDs[i].revents & POLLIN) {
			if (FDs[i].fd == _cancelFD[0]) {

 * file.
 */

#define __NO_EXT_QNX

#include "config.h"

#include <errno.h>
#include <math.h>
#include <string.h>

#include <sys/time.h>

#import "OFKernelEventObserver.h"
#import "OFKernelEventObserver+Private.h"
#import "OFKernelEventObserver_select.h"
#import "OFArray.h"

#import "OFObserveFailedException.h"
#import "OFOutOfRangeException.h"

#import "socket_helpers.h"

@implementation OFKernelEventObserver_select
- init
{

- (bool)observeForTimeInterval: (of_time_interval_t)timeInterval
{
	void *pool = objc_autoreleasePoolPush();
	id const *objects;
	fd_set readFDs;
	fd_set writeFDs;
	struct timeval timeout;
	int events;
	size_t i, count, realEvents = 0;

	[self OF_processQueueAndStoreRemovedIn: nil];

	if ([self OF_processCache]) {
		objc_autoreleasePoolPop(pool);
		return true;

#ifndef _WIN32
	timeout.tv_sec = (time_t)timeInterval;
#else
	timeout.tv_sec = (long)timeInterval;
#endif
	timeout.tv_usec = (int)lrint((timeInterval - timeout.tv_sec) * 1000);

	events = select((int)_maxFD + 1, &readFDs, &writeFDs, NULL,
	    (timeInterval != -1 ? &timeout : NULL));

	if (events < 0)
		@throw [OFObserveFailedException exceptionWithObserver: self
								 errNo: errno];

	if (events == 0)
		return false;

	if (FD_ISSET(_cancelFD[0], &readFDs)) {
		char buffer;
#ifndef _WIN32
		OF_ENSURE(read(_cancelFD[0], &buffer, 1) > 0);
#else

SRCS_SOCKETS = OFAcceptFailedException.m		\
	       OFAddressTranslationFailedException.m	\
	       OFAlreadyConnectedException.m		\
	       OFBindFailedException.m			\
	       OFConnectionFailedException.m		\
	       OFHTTPRequestFailedException.m		\
	       OFListenFailedException.m		\
	       OFNotConnectedException.m		\
	       OFObserveFailedException.m
SRCS_THREADS = OFConditionBroadcastFailedException.m	\
	       OFConditionSignalFailedException.m	\
	       OFConditionStillWaitingException.m	\
	       OFConditionWaitFailedException.m		\
	       OFThreadJoinFailedException.m		\
	       OFThreadStartFailedException.m		\
	       OFThreadStillRunningException.m

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFException.h"

@class OFKernelEventObserver;

/*!
 * @class OFObserveFailedException \
 *	  OFObserveFailedException.h ObjFW/OFObserveFailedException.h
 *
 * @brief An exception indicating that observing failed.
 */
@interface OFObserveFailedException: OFException
{
	OFKernelEventObserver *_observer;
	int _errNo;
}

#ifdef OF_HAVE_PROPERTIES
@property (readonly, retain) OFKernelEventObserver *observer;
@property (readonly) int errNo;
#endif

/*!
 * @brief Creates a new, autoreleased observe failed exception.
 *
 * @param observer The observer which failed to observe
 * @param errNo The errno of the error that occurred
 * @return A new, autoreleased observe failed exception
 */
+ (instancetype)exceptionWithObserver: (OFKernelEventObserver*)observer
				errNo: (int)errNo;

/*!
 * @brief Initializes an already allocated observe failed exception.
 *
 * @param observer The observer which failed to observe
 * @param errNo The errno of the error that occurred
 * @return An initialized observe failed exception
 */
- initWithObserver: (OFKernelEventObserver*)observer
	     errNo: (int)errNo;

/*!
 * @brief Returns the observer which failed to observe.
 *
 * @return The observer which failed to observe
 */
- (OFKernelEventObserver*)observer;

/*!
 * @brief Returns the errno of the error that occurred.
 *
 * @return The errno of the error that occurred
 */
- (int)errNo;
@end

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFObserveFailedException.h"
#import "OFString.h"
#import "OFKernelEventObserver.h"

@implementation OFObserveFailedException
+ (instancetype)exceptionWithObserver: (OFKernelEventObserver*)observer
				errNo: (int)errNo
{
	return [[[self alloc] initWithObserver: observer
					 errNo: errNo] autorelease];
}

- init
{
	OF_INVALID_INIT_METHOD
}

- initWithObserver: (OFKernelEventObserver*)observer
	     errNo: (int)errNo
{
	self = [super init];

	@try {
		_observer = [observer retain];
		_errNo = errNo;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	[_observer release];

	[super dealloc];
}

- (OFString*)description
{
	return [OFString stringWithFormat:
	    @"An observer of class %@ failed to observe: %@",
	    [_observer className], of_strerror(_errNo)];
}

- (OFKernelEventObserver*)observer
{
	OF_GETTER(_observer, true)
}

- (int)errNo
{
	return _errNo;
}
@end