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authorYang Tse <yangsita@gmail.com>2010-01-18 20:22:04 +0000
committerYang Tse <yangsita@gmail.com>2010-01-18 20:22:04 +0000
commitccfe279117f197d2b3d0bb17bc754209024836a2 (patch)
treeccfd266b8c3b77c37da1515f49dd22b21a8a43bc /lib/memdebug.c
parent5b5ff41ef1ddd70864c55bdf47edd3f9c942cdc8 (diff)
downloadcurl-ccfe279117f197d2b3d0bb17bc754209024836a2.tar.gz
Constantine Sapuntzakis enhancements to make memory tracking log file writing
of messages atomic, on systems where an fwrite of a memory buffer is atomic.
Diffstat (limited to 'lib/memdebug.c')
-rw-r--r--lib/memdebug.c113
1 files changed, 73 insertions, 40 deletions
diff --git a/lib/memdebug.c b/lib/memdebug.c
index 37921fd76..6261749fb 100644
--- a/lib/memdebug.c
+++ b/lib/memdebug.c
@@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@@ -36,6 +36,7 @@
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
+#include <stdarg.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
@@ -104,12 +105,14 @@ static bool countcheck(const char *func, int line, const char *source)
should not be made */
if(memlimit && source) {
if(!memsize) {
- if(logfile && source)
- fprintf(logfile, "LIMIT %s:%d %s reached memlimit\n",
- source, line, func);
- if(source)
+ if(source) {
+ /* log to file */
+ curl_memlog("LIMIT %s:%d %s reached memlimit\n",
+ source, line, func);
+ /* log to stderr also */
fprintf(stderr, "LIMIT %s:%d %s reached memlimit\n",
source, line, func);
+ }
SET_ERRNO(ENOMEM);
return TRUE; /* RETURN ERROR! */
}
@@ -117,9 +120,9 @@ static bool countcheck(const char *func, int line, const char *source)
memsize--; /* countdown */
/* log the countdown */
- if(logfile && source)
- fprintf(logfile, "LIMIT %s:%d %ld ALLOCS left\n",
- source, line, memsize);
+ if(source)
+ curl_memlog("LIMIT %s:%d %ld ALLOCS left\n",
+ source, line, memsize);
}
@@ -146,9 +149,9 @@ void *curl_domalloc(size_t wantedsize, int line, const char *source)
mem->size = wantedsize;
}
- if(logfile && source)
- fprintf(logfile, "MEM %s:%d malloc(%zd) = %p\n",
- source, line, wantedsize, mem ? mem->mem : 0);
+ if(source)
+ curl_memlog("MEM %s:%d malloc(%zd) = %p\n",
+ source, line, wantedsize, mem ? mem->mem : 0);
return (mem ? mem->mem : NULL);
}
@@ -175,9 +178,9 @@ void *curl_docalloc(size_t wanted_elements, size_t wanted_size,
mem->size = user_size;
}
- if(logfile && source)
- fprintf(logfile, "MEM %s:%d calloc(%zu,%zu) = %p\n",
- source, line, wanted_elements, wanted_size, mem ? mem->mem : 0);
+ if(source)
+ curl_memlog("MEM %s:%d calloc(%zu,%zu) = %p\n",
+ source, line, wanted_elements, wanted_size, mem?mem->mem:0);
return (mem ? mem->mem : NULL);
}
@@ -197,9 +200,9 @@ char *curl_dostrdup(const char *str, int line, const char *source)
if(mem)
memcpy(mem, str, len);
- if(logfile)
- fprintf(logfile, "MEM %s:%d strdup(%p) (%zu) = %p\n",
- source, line, str, len, mem);
+ if(source)
+ curl_memlog("MEM %s:%d strdup(%p) (%zu) = %p\n",
+ source, line, str, len, mem);
return mem;
}
@@ -222,9 +225,9 @@ void *curl_dorealloc(void *ptr, size_t wantedsize,
mem = (struct memdebug *)((char *)ptr - offsetof(struct memdebug, mem));
mem = (Curl_crealloc)(mem, size);
- if(logfile)
- fprintf(logfile, "MEM %s:%d realloc(%p, %zu) = %p\n",
- source, line, ptr, wantedsize, mem?mem->mem:NULL);
+ if(source)
+ curl_memlog("MEM %s:%d realloc(%p, %zu) = %p\n",
+ source, line, ptr, wantedsize, mem?mem->mem:NULL);
if(mem) {
mem->size = wantedsize;
@@ -248,17 +251,17 @@ void curl_dofree(void *ptr, int line, const char *source)
/* free for real */
(Curl_cfree)(mem);
- if(logfile)
- fprintf(logfile, "MEM %s:%d free(%p)\n", source, line, ptr);
+ if(source)
+ curl_memlog("MEM %s:%d free(%p)\n", source, line, ptr);
}
int curl_socket(int domain, int type, int protocol, int line,
const char *source)
{
int sockfd=socket(domain, type, protocol);
- if(logfile && (sockfd!=-1))
- fprintf(logfile, "FD %s:%d socket() = %d\n",
- source, line, sockfd);
+ if(source && (sockfd!=-1))
+ curl_memlog("FD %s:%d socket() = %d\n",
+ source, line, sockfd);
return sockfd;
}
@@ -268,18 +271,18 @@ int curl_accept(int s, void *saddr, void *saddrlen,
struct sockaddr *addr = (struct sockaddr *)saddr;
curl_socklen_t *addrlen = (curl_socklen_t *)saddrlen;
int sockfd=accept(s, addr, addrlen);
- if(logfile)
- fprintf(logfile, "FD %s:%d accept() = %d\n",
- source, line, sockfd);
+ if(source)
+ curl_memlog("FD %s:%d accept() = %d\n",
+ source, line, sockfd);
return sockfd;
}
/* separate function to allow libcurl to mark a "faked" close */
void curl_mark_sclose(int sockfd, int line, const char *source)
{
- if(logfile)
- fprintf(logfile, "FD %s:%d sclose(%d)\n",
- source, line, sockfd);
+ if(source)
+ curl_memlog("FD %s:%d sclose(%d)\n",
+ source, line, sockfd);
}
/* this is our own defined way to close sockets on *ALL* platforms */
@@ -294,9 +297,9 @@ FILE *curl_fopen(const char *file, const char *mode,
int line, const char *source)
{
FILE *res=fopen(file, mode);
- if(logfile)
- fprintf(logfile, "FILE %s:%d fopen(\"%s\",\"%s\") = %p\n",
- source, line, file, mode, res);
+ if(source)
+ curl_memlog("FILE %s:%d fopen(\"%s\",\"%s\") = %p\n",
+ source, line, file, mode, res);
return res;
}
@@ -305,9 +308,9 @@ FILE *curl_fdopen(int filedes, const char *mode,
int line, const char *source)
{
FILE *res=fdopen(filedes, mode);
- if(logfile)
- fprintf(logfile, "FILE %s:%d fdopen(\"%d\",\"%s\") = %p\n",
- source, line, filedes, mode, res);
+ if(source)
+ curl_memlog("FILE %s:%d fdopen(\"%d\",\"%s\") = %p\n",
+ source, line, filedes, mode, res);
return res;
}
#endif
@@ -319,9 +322,39 @@ int curl_fclose(FILE *file, int line, const char *source)
assert(file != NULL);
res=fclose(file);
- if(logfile)
- fprintf(logfile, "FILE %s:%d fclose(%p)\n",
- source, line, file);
+ if(source)
+ curl_memlog("FILE %s:%d fclose(%p)\n",
+ source, line, file);
return res;
}
+
+#define LOGLINE_BUFSIZE 1024
+
+/* this does the writting to the memory tracking log file */
+void curl_memlog(const char *format, ...)
+{
+ char *buf;
+ int nchars;
+ va_list ap;
+
+ if(!logfile)
+ return;
+
+ buf = (Curl_cmalloc)(LOGLINE_BUFSIZE);
+ if(!buf)
+ return;
+
+ va_start(ap, format);
+ nchars = vsnprintf(buf, LOGLINE_BUFSIZE, format, ap);
+ va_end(ap);
+
+ if(nchars > LOGLINE_BUFSIZE - 1)
+ nchars = LOGLINE_BUFSIZE - 1;
+
+ if(nchars > 0)
+ fwrite(buf, 1, nchars, logfile);
+
+ (Curl_cfree)(buf);
+}
+
#endif /* CURLDEBUG */