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/* Copyright (C) 2009 Pierre-Marc Fournier
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define _GNU_SOURCE
#include <dlfcn.h>
#include <sys/types.h>
#include <stdio.h>
#include <ust/marker.h>
#if 0
INTERCEPT_PROTOTYPE(void, malloc, size_t size)
INTERCEPT_TRACE("size %d", size)
INTERCEPT_CALL_ARGS(size)
INTERCEPT()
#define INTERCEPT_FUNC(type, name, args...) \
__I_FUNC_TYPE(type) \
__I_FUNC_NAME(name) \
__I_FUNC_ARGS(args)
#define INTERCEPT_TRACE(fmt, args...) \
#define __I_TRACE_FMT fmt \
#define __I_TRACE_ARGS args
#define INTERCEPT_CALL_ARGS(args...) \
#define __I_CALL_ARGS args
#define INTERCEPT() \
__I_FUNC_TYPE __I_FUNC_NAME(__I_FUNC_ARGS) \
{ \
static __I_FUNC_TYPE (*plibc_ ## __I_FUNC_NAME)(args) = NULL; \
\
if(plibc_ ## __I_FUNC_NAME == NULL) { \
plibc_ ## __I_FUNC_NAME = dlsym(RTLD_NEXT, "malloc"); \
if(plibc_ ## __I_FUNC_NAME == NULL) { \
fprintf(stderr, "mallocwrap: unable to find malloc\n"); \
return NULL; \
} \
} \
\
trace_mark(ust, __I_FUNC_NAME, __I_TRACE_FMT, __I_TRACE_ARGS); \
\
return plibc_ ## __I_FUNC_NAME (__I_CALL_ARGS); \
}
#endif
void *malloc(size_t size)
{
static void *(*plibc_malloc)(size_t size) = NULL;
void *retval;
if(plibc_malloc == NULL) {
plibc_malloc = dlsym(RTLD_NEXT, "malloc");
if(plibc_malloc == NULL) {
fprintf(stderr, "mallocwrap: unable to find malloc\n");
return NULL;
}
}
retval = plibc_malloc(size);
trace_mark(ust, malloc, "size %d ptr %p", (int)size, retval);
return retval;
}
void free(void *ptr)
{
static void *(*plibc_free)(void *ptr) = NULL;
if(plibc_free == NULL) {
plibc_free = dlsym(RTLD_NEXT, "free");
if(plibc_free == NULL) {
fprintf(stderr, "mallocwrap: unable to find free\n");
return;
}
}
trace_mark(ust, free, "ptr %p", ptr);
plibc_free(ptr);
}
MARKER_LIB
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