Have you considered running your application under a tool like valgrind to see where it reports leaks?
Lara -----Original Message----- From: xml <xml-boun...@gnome.org> On Behalf Of Eric Eberhard Sent: Tuesday, November 26, 2019 1:47 PM To: 'BR Chrisman' <brchris...@gmail.com> Cc: xml@gnome.org Subject: Re: [xml] Memory leak problem Thank you for reply. The problem I was solving for is NS not freeing with xmlFreeDoc(node); (which I did after all my nonsense). I took out that code and it dies in the same place ... perhaps I should break down and load a new libxml2 as I would guess that the problem is fixed now. If not, then I am still missing something. Like I said, I have used it for decades now and never had a problem. A memory leak is only a problem when ... it becomes a problem, otherwise you generally don't notice. This program is making thousands of XML files that are rather small, it frees the documents between each file. My customer's data has crossed some line ... Is there a C call to see how much memory one is consuming? I could likely put that in to try and find it. Anyone else with ideas please let me know! Thanks, Eric -----Original Message----- From: xml [mailto:xml-boun...@gnome.org] On Behalf Of BR Chrisman via xml Sent: Sunday, November 24, 2019 12:57 PM Cc: xml@gnome.org Subject: Re: [xml] Memory leak problem On Sat, Nov 23, 2019 at 10:04 AM Eric Eberhard <fl...@vicsmba.com> wrote: > > I have used libxml2 since it was libxml so I can’t believe I am having this > problem. I’m looking for someone smarter than me to help out. > > > > I use only the DOM (memory) parser, and an old version at that: > libxml2-2.7.3 > > > > I have a program that makes many XML files. They, alone, are not a problem. > But when a large amount are made (100s) it gets a memory error. > > > > After each XML document I make I write them to disk and then free them > (meaning I thought I was freeing ALL the memory). This is not the > case so I assume I am not coding it correctly. This is what I am > doing … > Hi Eric, I think you should be able to use xmlFreeDoc on the doc object, rather than on any particular node. One call to that cleans the whole document up. I have looped this under valgrind before with no issues found. - Brian Chrisman > > > The node is passed to this function (xmlNodePtr) named > freeMe(xmlNsPtr node) > > > > Void freeMe(xmlNSPtr node) { > > > > xmlNsPtr next; > > xmlNsPtr cur; > > > > cur = node->ns; > > while (cur) { > > next = cur->next; > > if (cur->href) xmlFree((char *) cur->href); > > if (cur->prefix) xmlFree((char *) cur->prefix); > > cur->href = NULL; > > cur->prefix = NULL; > > xmlFree((char *)cur); > > cur = next; > > } > > node->ns = NULL; > > > > if (node->type == XML_ELEMENT_NODE || > > node->type == XML_XINCLUDE_START || > > node->type == XML_XINCLUDE_END) { > > cur = node->nsDef; > > while (cur) { > > next = cur->next; > > if (cur->href) xmlFree((char *) cur->href); > > if (cur->prefix) xmlFree((char *) cur->prefix > > cur->href = NULL; > > cur->prefix = NULL; > > xmlFree((char *)cur); > > cur = next; > > } > > node->nsDef = NULL; > > If (node->children) > > FreeMe(node->children); //recursive > > } > > > > xmlFreeDoc(node); > > > > //done I think freeing up all memory > > > > I LEFT out the tests for NULLS and error checking and other silly things so > it would not be too long. > > > > It also repeats mostly the exact same code if the node is NS so I won’t bore > you. Don’t use NS much anyway. > > > > Problem is, something is not free()’d up. > > > > So besides the main node and NS is there something else I have to free()? > Better, is there a function that I can pass the node and it free()’s > everything for me? > > > > Any help – even sample code – would be much appreciated! Free horse back > ride in AZ for a winner? > > > > E > > > > > > > > > > > > > > > > Eric S Eberhard > > VICS (Vertical Integrated Computer Systems) > > Voice: 928 567 3529 > > Cell : 928 301 7537 (not reliable except for text or if not home) > > 2933 W Middle Verde Rd > > Camp Verde, AZ 86322 > > > > Oh – help me out and please join this group. I need to get large > numbers of members to take to the politicians. > https://www.facebook.com/groups/286143052248115/ > > This might work to just join? > > <table border="0" width="100%" cellspacing="0" cellpadding="0" > style="border-collapse:collapse;"><tr style=""><td height="28" > style="line-height:28px;"> </td></tr><tr><td style=""><table > border="0" width="280" cellspacing="0" cellpadding="0" > style="border-collapse:separate;background-color:#ffffff;border:1px > solid #dddfe2;border-radius:3px;font-family:Helvetica, Arial, > sans-serif;margin:0px auto;"><tr style="padding-bottom: 8px;"><td > style=""><img class="img" > src="https://scontent.fhhr1-1.fna.fbcdn.net/v/t1.0-0/c0.0.584.305a/p32 > 0x320/50521766_10218655229077782_1167298564032823296_n.jpg?_nc_cat=101 > &_nc_ht=scontent.fhhr1-1.fna&oh=d725734d9126b706d402e635740dcd > 29&oe=5D00A5A4" width="280" height="146" alt="" > /></td></tr><tr><td style="font-size:14px;font-weight:bold;padding:8px > 8px 0px 8px;text-align:center;">Save The Middle Verde</td></tr><tr><td > style="color:#90949c;font-size:12px;font-weight:normal;text-align:cent > er;">Public group · 228 members</td></tr><tr><td style="padding:8px > 12px 12px 12px;"><table border="0" cellspacing="0" cellpadding="0" > style="border-collapse:collapse;width:100%;"><tr><td > style="background-color:#4267b2;border-radius:3px;text-align:center;"> > <a > style="color:#3b5998;text-decoration:none;cursor:pointer;width:100%;" > href="https://www.facebook.com/plugins/group/join/popup/?group_id=2861 > 43052248115&source=email_campaign_plugin" target="_blank" > rel="noopener"><table border="0" cellspacing="0" cellpadding="3" > align="center" style="border-collapse:collapse;"><tr><td > style="border-bottom:3px solid #4267b2;border-top:3px solid > #4267b2;color:#FFF;font-family:Helvetica, Arial, > sans-serif;font-size:12px;font-weight:bold;">Join > Group</td></tr></table></a></td></tr></table></td></tr><tr><td > style="border-top:1px solid #dddfe2;font-size:12px;padding:8px > 12px;">This group is to help preserve the Middle Verde River, the > Middle Verde Character area as defined in the Town of Camp > Verde's General Plan, the 260 > co...</td></tr></table></td></tr><tr style=""><td height="28" > style="line-height:28px;"> </td></tr></table> > > > > _______________________________________________ > xml mailing list, project page http://xmlsoft.org/ xml@gnome.org > https://mail.gnome.org/mailman/listinfo/xml _______________________________________________ xml mailing list, project page http://xmlsoft.org/ xml@gnome.org https://mail.gnome.org/mailman/listinfo/xml _______________________________________________ xml mailing list, project page http://xmlsoft.org/ xml@gnome.org https://mail.gnome.org/mailman/listinfo/xml _______________________________________________ xml mailing list, project page http://xmlsoft.org/ xml@gnome.org https://mail.gnome.org/mailman/listinfo/xml
