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/* tinyproxy - A fast light-weight HTTP proxy
* Copyright (C) 2002 Robert James Kaes <rjkaes@users.sourceforge.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* Debugging versions of various heap related functions are combined
* here. The debugging versions include assertions and also print
* (to standard error) the function called along with the amount
* of memory allocated, and where the memory is pointing. The
* format of the log message is standardized.
*/
#include "main.h"
#include "heap.h"
#include "text.h"
#ifndef NDEBUG
void *debugging_calloc (size_t nmemb, size_t size, const char *file,
unsigned long line)
{
void *ptr;
assert (nmemb > 0);
assert (size > 0);
ptr = calloc (nmemb, size);
fprintf (stderr, "{calloc: %p:%lu x %lu} %s:%lu\n", ptr,
(unsigned long) nmemb, (unsigned long) size, file, line);
return ptr;
}
void *debugging_malloc (size_t size, const char *file, unsigned long line)
{
void *ptr;
assert (size > 0);
ptr = malloc (size);
fprintf (stderr, "{malloc: %p:%lu} %s:%lu\n", ptr,
(unsigned long) size, file, line);
return ptr;
}
void *debugging_realloc (void *ptr, size_t size, const char *file,
unsigned long line)
{
void *newptr;
assert (size > 0);
newptr = realloc (ptr, size);
fprintf (stderr, "{realloc: %p -> %p:%lu} %s:%lu\n", ptr, newptr,
(unsigned long) size, file, line);
return newptr;
}
void debugging_free (void *ptr, const char *file, unsigned long line)
{
fprintf (stderr, "{free: %p} %s:%lu\n", ptr, file, line);
if (ptr != NULL)
free (ptr);
return;
}
char *debugging_strdup (const char *s, const char *file, unsigned long line)
{
char *ptr;
size_t len;
assert (s != NULL);
len = strlen (s) + 1;
ptr = (char *) malloc (len);
if (!ptr)
return NULL;
memcpy (ptr, s, len);
fprintf (stderr, "{strdup: %p:%lu} %s:%lu\n", ptr,
(unsigned long) len, file, line);
return ptr;
}
#endif /* !NDEBUG */
/*
* Allocate a block of memory in the "shared" memory region.
*
* FIXME: This uses the most basic (and slowest) means of creating a
* shared memory location. It requires the use of a temporary file. We might
* want to look into something like MM (Shared Memory Library) for a better
* solution.
*/
void *malloc_shared_memory (size_t size)
{
int fd;
void *ptr;
char buffer[32];
static const char *shared_file = "/tmp/tinyproxy.shared.XXXXXX";
assert (size > 0);
strlcpy (buffer, shared_file, sizeof (buffer));
/* Only allow u+rw bits. This may be required for some versions
* of glibc so that mkstemp() doesn't make us vulnerable.
*/
umask (0177);
if ((fd = mkstemp (buffer)) == -1)
return MAP_FAILED;
unlink (buffer);
if (ftruncate (fd, size) == -1)
return MAP_FAILED;
ptr = mmap (NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
return ptr;
}
/*
* Allocate a block of memory from the "shared" region an initialize it to
* zero.
*/
void *calloc_shared_memory (size_t nmemb, size_t size)
{
void *ptr;
long length;
assert (nmemb > 0);
assert (size > 0);
length = nmemb * size;
ptr = malloc_shared_memory (length);
if (ptr == MAP_FAILED)
return ptr;
memset (ptr, 0, length);
return ptr;
}
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