2 /***************************************************************************
4 * Project ___| | | | _ \| |
6 * | (__| |_| | _ <| |___
7 * \___|\___/|_| \_\_____|
9 * Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
11 * This software is licensed as described in the file COPYING, which
12 * you should have received as part of this distribution. The terms
13 * are also available at http://curl.haxx.se/docs/copyright.html.
15 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
16 * copies of the Software, and permit persons to whom the Software is
17 * furnished to do so, under the terms of the COPYING file.
19 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
20 * KIND, either express or implied.
23 ***************************************************************************/
27 #include <curl/curl.h>
29 #ifdef HAVE_SYS_SOCKET_H
30 #include <sys/socket.h>
33 #define _MPRINTF_REPLACE
34 #include <curl/mprintf.h>
44 #define MEMDEBUG_NODEFINES /* don't redefine the standard functions */
50 /* I'm hoping this is the thing with the strictest alignment
51 * requirements. That also means we waste some space :-( */
55 * Note that these debug functions are very simple and they are meant to
56 * remain so. For advanced analysis, record a log file and write perl scripts
59 * Don't use these with multithreaded test programs!
62 #define logfile curl_debuglogfile
63 FILE *curl_debuglogfile;
64 static bool memlimit; /* enable memory limit */
65 static long memsize; /* set number of mallocs allowed */
67 /* this sets the log file name */
68 void curl_memdebug(const char *logname)
71 logfile = fopen(logname, "w");
76 /* This function sets the number of malloc() calls that should return
78 void curl_memlimit(long limit)
84 /* returns TRUE if this isn't allowed! */
85 static bool countcheck(const char *func, int line, const char *source)
87 /* if source is NULL, then the call is made internally and this check
89 if(memlimit && source) {
92 fprintf(logfile, "LIMIT %s:%d %s reached memlimit\n",
94 return TRUE; /* RETURN ERROR! */
97 memsize--; /* countdown */
99 /* log the countdown */
100 if(logfile && source)
101 fprintf(logfile, "LIMIT %s:%d %ld ALLOCS left\n",
102 source, line, memsize);
106 return FALSE; /* allow this */
109 void *curl_domalloc(size_t wantedsize, int line, const char *source)
111 struct memdebug *mem;
114 if(countcheck("malloc", line, source))
117 /* alloc at least 64 bytes */
118 size = sizeof(struct memdebug)+wantedsize;
120 mem=(struct memdebug *)(malloc)(size);
122 /* fill memory with junk */
123 memset(mem->mem, 0xA5, wantedsize);
124 mem->size = wantedsize;
127 if(logfile && source)
128 fprintf(logfile, "MEM %s:%d malloc(%d) = %p\n",
129 source, line, wantedsize, mem->mem);
133 char *curl_dostrdup(const char *str, int line, const char *source)
138 curlassert(str != NULL);
140 if(countcheck("strdup", line, source))
145 mem=curl_domalloc(len, 0, NULL); /* NULL prevents logging */
146 memcpy(mem, str, len);
149 fprintf(logfile, "MEM %s:%d strdup(%p) (%d) = %p\n",
150 source, line, str, len, mem);
155 /* We provide a realloc() that accepts a NULL as pointer, which then
156 performs a malloc(). In order to work with ares. */
157 void *curl_dorealloc(void *ptr, size_t wantedsize,
158 int line, const char *source)
160 struct memdebug *mem=NULL;
162 size_t size = sizeof(struct memdebug)+wantedsize;
164 if(countcheck("realloc", line, source))
168 mem = (struct memdebug *)((char *)ptr - offsetof(struct memdebug, mem));
170 mem=(struct memdebug *)(realloc)(mem, size);
172 fprintf(logfile, "MEM %s:%d realloc(0x%x, %d) = %p\n",
173 source, line, ptr, wantedsize, mem?mem->mem:NULL);
176 mem->size = wantedsize;
183 void curl_dofree(void *ptr, int line, const char *source)
185 struct memdebug *mem;
187 curlassert(ptr != NULL);
189 mem = (struct memdebug *)((char *)ptr - offsetof(struct memdebug, mem));
192 memset(mem->mem, 0x13, mem->size);
198 fprintf(logfile, "MEM %s:%d free(%p)\n", source, line, ptr);
201 int curl_socket(int domain, int type, int protocol, int line,
204 int sockfd=(socket)(domain, type, protocol);
205 if(logfile && (sockfd!=-1))
206 fprintf(logfile, "FD %s:%d socket() = %d\n",
207 source, line, sockfd);
211 int curl_accept(int s, struct sockaddr *addr, socklen_t *addrlen,
212 int line, const char *source)
214 int sockfd=(accept)(s, addr, addrlen);
216 fprintf(logfile, "FD %s:%d accept() = %d\n",
217 source, line, sockfd);
221 /* this is our own defined way to close sockets on *ALL* platforms */
222 int curl_sclose(int sockfd, int line, const char *source)
224 int res=sclose(sockfd);
226 fprintf(logfile, "FD %s:%d sclose(%d)\n",
227 source, line, sockfd);
231 FILE *curl_fopen(const char *file, const char *mode,
232 int line, const char *source)
234 FILE *res=(fopen)(file, mode);
236 fprintf(logfile, "FILE %s:%d fopen(\"%s\") = %p\n",
237 source, line, file, res);
241 int curl_fclose(FILE *file, int line, const char *source)
245 curlassert(file != NULL);
249 fprintf(logfile, "FILE %s:%d fclose(%p)\n",
255 int VOID_VAR_MEMDEBUG;
257 #endif /* CURLDEBUG */