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Memory leaks

From: Owen Roberts <oroberts@baltimore.com>
Date: Tue, 16 Apr 2002 12:18:33 +0100
Message-ID: <B15225F53DF1D411B80B0002A5097D9F57B222@irlms02.ie.baltimore.com>
To: "'www-lib@w3.org'" <www-lib@w3.org>
Hi all,
I'm using 5.3.2, the latest as of Dec 2000, and am having problems with
memory leaks. I have had a qwik search through the archives re: leaks but
didn't find a great amount of detail, hence my post.
Below are 4 stack traces of where I believe there are a few leaks, followed
by a modification I made to HTProfile_delete() which cleared up a bunch of
other ones I found at the top level. (I made some other minor changes as
well which should become obvious if you tried the additional code as below,
re crashes when start-terminate multiple times)
I saw reference to one of the leaks below in the list I think, the one where
a timer is being allocated in HTHost_free() during HTTP cleanup.
Does anyone have any further information on reducing/eliminating memory
leaks for post 5.3.2 source code? Does the latest in CVS fix any of these?
Thanks,
Owen Roberts
--
Owen Roberts
Baltimore Technologies
oroberts@baltimore.com


HTAtom_for() 2 leaks
HTMemory_malloc(unsigned int 12) line 68 + 21 bytes
HTAtom_for(const char * 0x005a5380 `string') line 67 + 21 bytes
HTAnchor_clearHeader(_HTParentAnchor * 0x00430a08) line 1378 + 10 bytes
delete_parent(_HTParentAnchor * 0x00430a08) line 336 + 9 bytes
delete_family(_HTAnchor * 0x00430a08) line 379 + 9 bytes
HTAnchor_deleteAll(_HTList * 0x00000000) line 400 + 9 bytes
HTLibTerminate() line 194 + 7 bytes
HTProfile_delete() line 57

SockEvents_get() 2 leaks
HTMemory_calloc(unsigned int 1, unsigned int 8) line 88 + 25 bytes
HTList_addObject(_HTList * 0x00441c28, void * 0x00441c70) line 45 + 9 bytes
SockEvents_get(unsigned int 484, int 0) line 269 + 20 bytes
HTEventList_register(unsigned int 484, int 327712, _HTEvent * 0x00437440)
line 412 + 11 bytes
HTEvent_register(unsigned int 484, int 327712, _HTEvent * 0x00437440) line
60 + 18 bytes
HTHost_register(_HTHost * 0x00437138, _HTNet * 0x00436498, int 262160) line
1462 + 30 bytes
HTDoConnect(_HTNet * 0x00436498) line 318 + 18 bytes
HTHost_connect(_HTHost * 0x00437138, _HTNet * 0x00436498, char * 0x004361a8)
line 1316 + 9 bytes
HTTPEvent(unsigned int 4294967295, void * 0x00436ec8, int 393216) line 1066
+ 26 bytes
HTLoadHTTP(unsigned int 4294967295, _HTRequest * 0x00423b28) line 974 + 18
bytes
HTNet_newClient(_HTRequest * 0x00423b28) line 808 + 9 bytes
HTLoad(_HTRequest * 0x00423b28, int 0) line 1694 + 9 bytes
launch_request(_HTRequest * 0x00423b28, int 0) line 80 + 13 bytes
HTLoadToChunk(const char * 0x00423ac1, _HTRequest * 0x00423b28) line 192 +
11 bytes


HTHost_setClass
HTMemory_malloc(unsigned int 5) line 68 + 21 bytes
HTSACopy(char * * 0x00437148, const char * 0x0068435c `string') line 117 +
21 bytes
HTHost_setClass(_HTHost * 0x00437138, char * 0x0068435c `string') line 499 +
28 bytes
HTTPEvent(unsigned int 484, void * 0x00436ec8, int 262160) line 1083 + 14
bytes
HostEvent(unsigned int 484, void * 0x00437138, int 262160) line 240 + 39
bytes
HTEventList_dispatch(unsigned int 484, int 262160, unsigned long 435651373)
line 581 + 21 bytes
AsyncWindowProc(HWND__ * 0x000c0762, unsigned int 1024, unsigned int 484,
long 16) line 838 + 17 bytes

HTHost_free
HTMemory_calloc(unsigned int 1, unsigned int 8) line 88 + 25 bytes
HTList_new() line 21 + 9 bytes
HTTimer_new(_HTTimer * 0x00000000, int (_HTTimer *, void *, int)* 0x0057eb20
IdleTimeoutEvent(_HTTimer *, void *, int), void * 0x00437138, unsigned long
60000, int 1, int 0) line 200 + 5 bytes
HTHost_free(_HTHost * 0x00437138, int 200) line 1134 + 26 bytes
HTHost_deleteNet(_HTHost * 0x00437138, _HTNet * 0x00436498, int 200) line
1155 + 13 bytes
HTNet_delete(_HTNet * 0x00436498, int 200) line 911 + 20 bytes
HTTPCleanup(_HTRequest * 0x00423b28, int 200) line 171 + 13 bytes
HTTPEvent(unsigned int 484, void * 0x00436ec8, int 1) line 1270 + 16 bytes
HostEvent(unsigned int 484, void * 0x00437138, int 1) line 197 + 33 bytes
HTEventList_dispatch(unsigned int 484, int 1, unsigned long 435769433) line
581 + 21 bytes
AsyncWindowProc(HWND__ * 0x00160762, unsigned int 1024, unsigned int 484,
long 1) line 838 + 17 bytes


After modifying HTProfile_delete() as below

   PUBLIC void HTProfile_delete (void)
   {
       if (!preemptive) HTEventTerminate();
       if (HTLib_isInitialized()) {
   
   	/* Clean up the persistent cache (if any) */
   	HTCacheTerminate();
   
   	/* Clean up all the global preferences */
   	HTFormat_deleteAll();
   
   	/* The following lists have been cleaned up by HTFormat_deleteAll */
   	transfer_encodings = 0;
   	content_encodings = 0;
   	converters = 0;
   
   	/* Remove bindings between suffixes, media types */
   	HTBind_deleteAll();
->     
->     
->     HTAlert_deleteAll();
->     HTTransport_deleteAll();
->     HTNet_deleteAll();
->     HTHeader_deleteAll();
->     HTIcon_deleteAll();
->     HTRule_setGlobal(NULL);
->     HTAA_deleteAllModules();
   
   	/* Terminate libwww */
   	HTLibTerminate();
       }
   }




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Received on Tuesday, 16 April 2002 07:23:09 GMT

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