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#import "macros.h"
@implementation OFStreamObserver_select
- init
{
self = [super init];
FD_ZERO(&readFDs);
FD_ZERO(&writeFDs);
FD_ZERO(&_readFDs);
FD_ZERO(&_writeFDs);
FD_SET(cancelFD[0], &readFDs);
FD_SET(_cancelFD[0], &_readFDs);
return self;
}
- (void)OF_addFileDescriptorForReading: (int)fd
{
FD_SET(fd, &readFDs);
FD_SET(fd, &exceptFDs);
FD_SET(fd, &_readFDs);
FD_SET(fd, &_exceptFDs);
}
- (void)OF_addFileDescriptorForWriting: (int)fd
{
FD_SET(fd, &writeFDs);
FD_SET(fd, &exceptFDs);
FD_SET(fd, &_writeFDs);
FD_SET(fd, &_exceptFDs);
}
- (void)OF_removeFileDescriptorForReading: (int)fd
{
FD_CLR(fd, &readFDs);
FD_CLR(fd, &_readFDs);
if (!FD_ISSET(fd, &writeFDs))
FD_CLR(fd, &exceptFDs);
if (!FD_ISSET(fd, &_writeFDs))
FD_CLR(fd, &_exceptFDs);
}
- (void)OF_removeFileDescriptorForWriting: (int)fd
{
FD_CLR(fd, &writeFDs);
FD_CLR(fd, &_writeFDs);
if (!FD_ISSET(fd, &readFDs))
FD_CLR(fd, &exceptFDs);
if (!FD_ISSET(fd, &_readFDs))
FD_CLR(fd, &_exceptFDs);
}
- (BOOL)observeWithTimeout: (double)timeout
{
void *pool = objc_autoreleasePoolPush();
OFStream **objects;
fd_set readFDs_;
fd_set writeFDs_;
fd_set exceptFDs_;
fd_set readFDs;
fd_set writeFDs;
fd_set exceptFDs;
struct timeval time;
size_t i, count, realEvents = 0;
[self OF_processQueue];
if ([self OF_processCache]) {
objc_autoreleasePoolPop(pool);
return YES;
}
objc_autoreleasePoolPop(pool);
#ifdef FD_COPY
FD_COPY(&readFDs, &readFDs_);
FD_COPY(&writeFDs, &writeFDs_);
FD_COPY(&exceptFDs, &exceptFDs_);
FD_COPY(&_readFDs, &readFDs);
FD_COPY(&_writeFDs, &writeFDs);
FD_COPY(&_exceptFDs, &exceptFDs);
#else
readFDs_ = readFDs;
writeFDs_ = writeFDs;
exceptFDs_ = exceptFDs;
readFDs = _readFDs;
writeFDs = _writeFDs;
exceptFDs = _exceptFDs;
#endif
/*
* We cast to int before assigning to tv_usec in order to avoid a
* warning with Apple GCC on PPC. POSIX defines this as suseconds_t,
* however, this is not available on Win32. As an int should always
* satisfy the required range, we just cast to int.
*/
time.tv_sec = (time_t)timeout;
time.tv_usec = (int)((timeout - time.tv_sec) * 1000);
if (select((int)maxFD + 1, &readFDs_, &writeFDs_, &exceptFDs_,
if (select((int)_maxFD + 1, &readFDs, &writeFDs, &exceptFDs,
(timeout != -1 ? &time : NULL)) < 1)
return NO;
if (FD_ISSET(cancelFD[0], &readFDs_)) {
if (FD_ISSET(_cancelFD[0], &readFDs)) {
char buffer;
#ifndef _WIN32
OF_ENSURE(read(cancelFD[0], &buffer, 1) > 0);
OF_ENSURE(read(_cancelFD[0], &buffer, 1) > 0);
#else
OF_ENSURE(recvfrom(cancelFD[0], &buffer, 1, 0, NULL, NULL) > 0);
OF_ENSURE(recvfrom(_cancelFD[0], &buffer, 1, 0, NULL,
NULL) > 0);
#endif
}
objects = [readStreams objects];
count = [readStreams count];
objects = [_readStreams objects];
count = [_readStreams count];
for (i = 0; i < count; i++) {
int fd = [objects[i] fileDescriptorForReading];
pool = objc_autoreleasePoolPush();
if (FD_ISSET(fd, &readFDs_)) {
if ([delegate respondsToSelector:
if (FD_ISSET(fd, &readFDs)) {
if ([_delegate respondsToSelector:
@selector(streamIsReadyForReading:)])
[delegate streamIsReadyForReading: objects[i]];
[_delegate streamIsReadyForReading: objects[i]];
realEvents++;
}
if (FD_ISSET(fd, &exceptFDs_)) {
if ([delegate respondsToSelector:
if (FD_ISSET(fd, &exceptFDs)) {
if ([_delegate respondsToSelector:
@selector(streamDidReceiveException:)])
[delegate streamDidReceiveException:
[_delegate streamDidReceiveException:
objects[i]];
/*
* Prevent calling it twice in case the FD is in both
* sets.
*/
FD_CLR(fd, &exceptFDs_);
FD_CLR(fd, &exceptFDs);
realEvents++;
}
objc_autoreleasePoolPop(pool);
}
objects = [writeStreams objects];
count = [writeStreams count];
objects = [_writeStreams objects];
count = [_writeStreams count];
for (i = 0; i < count; i++) {
int fd = [objects[i] fileDescriptorForWriting];
pool = objc_autoreleasePoolPush();
if (FD_ISSET(fd, &writeFDs_)) {
if ([delegate respondsToSelector:
if (FD_ISSET(fd, &writeFDs)) {
if ([_delegate respondsToSelector:
@selector(streamIsReadyForWriting:)])
[delegate streamIsReadyForWriting: objects[i]];
[_delegate streamIsReadyForWriting: objects[i]];
realEvents++;
}
if (FD_ISSET(fd, &exceptFDs_)) {
if ([delegate respondsToSelector:
if (FD_ISSET(fd, &exceptFDs)) {
if ([_delegate respondsToSelector:
@selector(streamDidReceiveException:)])
[delegate streamDidReceiveException:
[_delegate streamDidReceiveException:
objects[i]];
realEvents++;
}
objc_autoreleasePoolPop(pool);
}
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