| 1 | /* |
| 2 | * Copyright (C) 2009 Pierre-Marc Fournier |
| 3 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 4 | * |
| 5 | * This library is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU Lesser General Public |
| 7 | * License as published by the Free Software Foundation; either |
| 8 | * version 2.1 of the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This library is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * Lesser General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU Lesser General Public |
| 16 | * License along with this library; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | #define _GNU_SOURCE |
| 21 | #include <dlfcn.h> |
| 22 | #include <sys/types.h> |
| 23 | #include <stdio.h> |
| 24 | |
| 25 | #define TRACEPOINT_DEFINE |
| 26 | #define TRACEPOINT_CREATE_PROBES |
| 27 | #include "ust_libc.h" |
| 28 | |
| 29 | void *malloc(size_t size) |
| 30 | { |
| 31 | static void *(*plibc_malloc)(size_t size) = NULL; |
| 32 | void *retval; |
| 33 | |
| 34 | if (plibc_malloc == NULL) { |
| 35 | plibc_malloc = dlsym(RTLD_NEXT, "malloc"); |
| 36 | if (plibc_malloc == NULL) { |
| 37 | fprintf(stderr, "mallocwrap: unable to find malloc\n"); |
| 38 | return NULL; |
| 39 | } |
| 40 | } |
| 41 | retval = plibc_malloc(size); |
| 42 | tracepoint(ust_libc, malloc, size, retval); |
| 43 | return retval; |
| 44 | } |
| 45 | |
| 46 | void free(void *ptr) |
| 47 | { |
| 48 | static void *(*plibc_free)(void *ptr) = NULL; |
| 49 | |
| 50 | if (plibc_free == NULL) { |
| 51 | plibc_free = dlsym(RTLD_NEXT, "free"); |
| 52 | if (plibc_free == NULL) { |
| 53 | fprintf(stderr, "mallocwrap: unable to find free\n"); |
| 54 | return; |
| 55 | } |
| 56 | } |
| 57 | tracepoint(ust_libc, free, ptr); |
| 58 | plibc_free(ptr); |
| 59 | } |