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Re: CFFileDescriptor fd leak?
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Re: CFFileDescriptor fd leak?


  • Subject: Re: CFFileDescriptor fd leak?
  • From: "A.M." <email@hidden>
  • Date: Thu, 20 Aug 2009 18:47:44 -0400

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On Aug 20, 2009, at 1:58 PM, A.M. wrote:

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Hello,

I am using CFFileDescriptor and it noticed that it seems to leak its kqueue file descriptor. Here is sample code demonstrating the problem:

Wow. So I managed to cook up an evil hack which properly closes the kqueue:


#include <CoreFoundation/CoreFoundation.h>
#include <unistd.h>
#include <sys/event.h>

static void junkCallback(CFFileDescriptorRef fdref, CFOptionFlags callBackTypes, void *info) {}

struct __FileDescriptorHackStruct
{
	int junkA;
	int junkB;
	int junkC;
	int internalKqueueDescriptor;
};

int main(int argc, char *argv[]) {
int i;
for(i=0;i<3;i++)
{
CFFileDescriptorRef fdref = CFFileDescriptorCreate(kCFAllocatorDefault, 0, false, junkCallback, NULL);
printf("%d\n",((struct __FileDescriptorHackStruct*)fdref)- >internalKqueueDescriptor);
close(((struct __FileDescriptorHackStruct*)fdref)- >internalKqueueDescriptor);
CFFileDescriptorInvalidate(fdref);
CFRelease(fdref);
}
sleep(100000);
return 0;
}


If one flips the CFFileDescriptorInvalidate() and close() lines, the kqueue fd stays open. At least I can stop the leakage now- any ideas?

Cheers,
M
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 >CFFileDescriptor fd leak? (From: "A.M." <email@hidden>)

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