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-rw-r--r--src/polypcore/xmalloc.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/src/polypcore/xmalloc.c b/src/polypcore/xmalloc.c
new file mode 100644
index 00000000..bf366347
--- /dev/null
+++ b/src/polypcore/xmalloc.c
@@ -0,0 +1,122 @@
+/* $Id$ */
+
+/***
+ This file is part of polypaudio.
+
+ polypaudio 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 of the License,
+ or (at your option) any later version.
+
+ polypaudio 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 Lesser General Public License
+ along with polypaudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <signal.h>
+#include <assert.h>
+#include <unistd.h>
+
+#include "memory.h"
+#include "util.h"
+#include "xmalloc.h"
+#include "gccmacro.h"
+
+/* Make sure not to allocate more than this much memory. */
+#define MAX_ALLOC_SIZE (1024*1024*20) /* 20MB */
+
+/* #undef malloc */
+/* #undef free */
+/* #undef realloc */
+/* #undef strndup */
+/* #undef strdup */
+
+static void oom(void) PA_GCC_NORETURN;
+
+/** called in case of an OOM situation. Prints an error message and
+ * exits */
+static void oom(void) {
+ static const char e[] = "Not enough memory\n";
+ pa_loop_write(STDERR_FILENO, e, sizeof(e)-1);
+#ifdef SIGQUIT
+ raise(SIGQUIT);
+#endif
+ _exit(1);
+}
+
+void* pa_xmalloc(size_t size) {
+ void *p;
+ assert(size > 0);
+ assert(size < MAX_ALLOC_SIZE);
+
+ if (!(p = malloc(size)))
+ oom();
+
+ return p;
+}
+
+void* pa_xmalloc0(size_t size) {
+ void *p;
+ assert(size > 0);
+ assert(size < MAX_ALLOC_SIZE);
+
+ if (!(p = calloc(1, size)))
+ oom();
+
+ return p;
+}
+
+void *pa_xrealloc(void *ptr, size_t size) {
+ void *p;
+ assert(size > 0);
+ assert(size < MAX_ALLOC_SIZE);
+
+ if (!(p = realloc(ptr, size)))
+ oom();
+ return p;
+}
+
+void* pa_xmemdup(const void *p, size_t l) {
+ if (!p)
+ return NULL;
+ else {
+ char *r = pa_xmalloc(l);
+ memcpy(r, p, l);
+ return r;
+ }
+}
+
+char *pa_xstrdup(const char *s) {
+ if (!s)
+ return NULL;
+
+ return pa_xmemdup(s, strlen(s)+1);
+}
+
+char *pa_xstrndup(const char *s, size_t l) {
+ if (!s)
+ return NULL;
+ else {
+ char *r;
+ size_t t = strlen(s);
+
+ if (t > l)
+ t = l;
+
+ r = pa_xmemdup(s, t+1);
+ r[t] = 0;
+ return r;
+ }
+}
+