mirror of
https://github.com/moparisthebest/curl
synced 2024-11-16 14:35:03 -05:00
295 lines
7.4 KiB
C
295 lines
7.4 KiB
C
#ifdef CURLDEBUG
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2005, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* $Id$
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***************************************************************************/
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#include "setup.h"
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#include <curl/curl.h>
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#define _MPRINTF_REPLACE
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#include <curl/mprintf.h>
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#include "urldata.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#define MEMDEBUG_NODEFINES /* don't redefine the standard functions */
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#include "memory.h"
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#include "memdebug.h"
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struct memdebug {
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size_t size;
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double mem[1];
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/* I'm hoping this is the thing with the strictest alignment
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* requirements. That also means we waste some space :-( */
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};
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/*
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* Note that these debug functions are very simple and they are meant to
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* remain so. For advanced analysis, record a log file and write perl scripts
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* to analyze them!
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*
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* Don't use these with multithreaded test programs!
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*/
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#define logfile curl_debuglogfile
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FILE *curl_debuglogfile;
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static bool memlimit; /* enable memory limit */
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static long memsize; /* set number of mallocs allowed */
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/* this sets the log file name */
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void curl_memdebug(const char *logname)
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{
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if(logname)
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logfile = fopen(logname, "w");
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else
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logfile = stderr;
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}
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/* This function sets the number of malloc() calls that should return
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successfully! */
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void curl_memlimit(long limit)
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{
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memlimit = TRUE;
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memsize = limit;
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}
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/* returns TRUE if this isn't allowed! */
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static bool countcheck(const char *func, int line, const char *source)
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{
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/* if source is NULL, then the call is made internally and this check
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should not be made */
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if(memlimit && source) {
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if(!memsize) {
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if(logfile && source)
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fprintf(logfile, "LIMIT %s:%d %s reached memlimit\n",
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source, line, func);
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if(source)
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fprintf(stderr, "LIMIT %s:%d %s reached memlimit\n",
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source, line, func);
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errno = ENOMEM;
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return TRUE; /* RETURN ERROR! */
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}
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else
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memsize--; /* countdown */
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/* log the countdown */
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if(logfile && source)
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fprintf(logfile, "LIMIT %s:%d %ld ALLOCS left\n",
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source, line, memsize);
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}
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return FALSE; /* allow this */
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}
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void *curl_domalloc(size_t wantedsize, int line, const char *source)
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{
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struct memdebug *mem;
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size_t size;
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if(countcheck("malloc", line, source))
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return NULL;
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/* alloc at least 64 bytes */
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size = sizeof(struct memdebug)+wantedsize;
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mem=(struct memdebug *)(Curl_cmalloc)(size);
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if(mem) {
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/* fill memory with junk */
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memset(mem->mem, 0xA5, wantedsize);
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mem->size = wantedsize;
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}
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if(logfile && source)
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fprintf(logfile, "MEM %s:%d malloc(%zd) = %p\n",
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source, line, wantedsize, mem ? mem->mem : 0);
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return (mem ? mem->mem : NULL);
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}
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void *curl_docalloc(size_t wanted_elements, size_t wanted_size,
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int line, const char *source)
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{
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struct memdebug *mem;
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size_t size, user_size;
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if(countcheck("calloc", line, source))
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return NULL;
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/* alloc at least 64 bytes */
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user_size = wanted_size * wanted_elements;
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size = sizeof(struct memdebug) + user_size;
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mem = (struct memdebug *)(Curl_cmalloc)(size);
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if(mem) {
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/* fill memory with zeroes */
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memset(mem->mem, 0, user_size);
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mem->size = user_size;
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}
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if(logfile && source)
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fprintf(logfile, "MEM %s:%d calloc(%u,%u) = %p\n",
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source, line, wanted_elements, wanted_size, mem ? mem->mem : 0);
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return (mem ? mem->mem : NULL);
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}
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char *curl_dostrdup(const char *str, int line, const char *source)
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{
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char *mem;
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size_t len;
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curlassert(str != NULL);
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if(countcheck("strdup", line, source))
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return NULL;
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len=strlen(str)+1;
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mem=curl_domalloc(len, 0, NULL); /* NULL prevents logging */
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if (mem)
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memcpy(mem, str, len);
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if(logfile)
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fprintf(logfile, "MEM %s:%d strdup(%p) (%zd) = %p\n",
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source, line, str, len, mem);
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return mem;
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}
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/* We provide a realloc() that accepts a NULL as pointer, which then
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performs a malloc(). In order to work with ares. */
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void *curl_dorealloc(void *ptr, size_t wantedsize,
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int line, const char *source)
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{
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struct memdebug *mem=NULL;
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size_t size = sizeof(struct memdebug)+wantedsize;
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if(countcheck("realloc", line, source))
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return NULL;
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if(ptr)
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mem = (struct memdebug *)((char *)ptr - offsetof(struct memdebug, mem));
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mem=(struct memdebug *)(Curl_crealloc)(mem, size);
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if(logfile)
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fprintf(logfile, "MEM %s:%d realloc(%p, %zd) = %p\n",
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source, line, ptr, wantedsize, mem?mem->mem:NULL);
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if(mem) {
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mem->size = wantedsize;
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return mem->mem;
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}
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return NULL;
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}
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void curl_dofree(void *ptr, int line, const char *source)
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{
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struct memdebug *mem;
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curlassert(ptr != NULL);
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mem = (struct memdebug *)((char *)ptr - offsetof(struct memdebug, mem));
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/* destroy */
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memset(mem->mem, 0x13, mem->size);
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/* free for real */
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(Curl_cfree)(mem);
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if(logfile)
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fprintf(logfile, "MEM %s:%d free(%p)\n", source, line, ptr);
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}
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int curl_socket(int domain, int type, int protocol, int line,
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const char *source)
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{
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int sockfd=(socket)(domain, type, protocol);
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if(logfile && (sockfd!=-1))
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fprintf(logfile, "FD %s:%d socket() = %d\n",
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source, line, sockfd);
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return sockfd;
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}
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int curl_accept(int s, void *saddr, void *saddrlen,
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int line, const char *source)
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{
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struct sockaddr *addr = (struct sockaddr *)saddr;
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socklen_t *addrlen = (socklen_t *)saddrlen;
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int sockfd=(accept)(s, addr, addrlen);
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if(logfile)
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fprintf(logfile, "FD %s:%d accept() = %d\n",
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source, line, sockfd);
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return sockfd;
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}
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/* this is our own defined way to close sockets on *ALL* platforms */
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int curl_sclose(int sockfd, int line, const char *source)
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{
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int res=sclose(sockfd);
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if(logfile)
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fprintf(logfile, "FD %s:%d sclose(%d)\n",
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source, line, sockfd);
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return res;
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}
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FILE *curl_fopen(const char *file, const char *mode,
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int line, const char *source)
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{
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FILE *res=(fopen)(file, mode);
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if(logfile)
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fprintf(logfile, "FILE %s:%d fopen(\"%s\",\"%s\") = %p\n",
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source, line, file, mode, res);
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return res;
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}
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int curl_fclose(FILE *file, int line, const char *source)
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{
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int res;
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curlassert(file != NULL);
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res=(fclose)(file);
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if(logfile)
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fprintf(logfile, "FILE %s:%d fclose(%p)\n",
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source, line, file);
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return res;
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}
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#else
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#ifdef VMS
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int VOID_VAR_MEMDEBUG;
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#else
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/* we provide a fake do-nothing function here to avoid compiler warnings */
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void curl_memdebug(void) {}
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#endif /* VMS */
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#endif /* CURLDEBUG */
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