X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust-libc-wrapper%2Flttng-ust-malloc.c;fp=liblttng-ust-libc-wrapper%2Flttng-ust-malloc.c;h=3212ff0bacca50f7e8511977ce66b708113f3c81;hb=476037d9a24fdd5e339e3565743aadb9cb8a0a96;hp=0000000000000000000000000000000000000000;hpb=d8de13549b80d40b0c823e43e81afd55266f2fe5;p=lttng-ust.git

diff --git a/liblttng-ust-libc-wrapper/lttng-ust-malloc.c b/liblttng-ust-libc-wrapper/lttng-ust-malloc.c
new file mode 100644
index 00000000..3212ff0b
--- /dev/null
+++ b/liblttng-ust-libc-wrapper/lttng-ust-malloc.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2009  Pierre-Marc Fournier
+ * Copyright (C) 2011  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * 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>
+
+#define TRACEPOINT_DEFINE
+#define TRACEPOINT_CREATE_PROBES
+#include "ust_libc.h"
+
+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);
+	tracepoint(ust_libc, malloc, 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;
+		}
+	}
+	tracepoint(ust_libc, free, ptr);
+	plibc_free(ptr);
+}