#include <string.h>
#include <assert.h>
#include <stdio.h>
+#include <unistd.h>
#include "malloc.h"
static const AvahiAllocator *allocator = NULL;
+static void oom(void) AVAHI_GCC_NORETURN;
+
+static void oom(void) {
+
+ static const char msg[] = "Out of memory, aborting ...\n";
+ const char *n = msg;
+
+ while (strlen(n) > 0) {
+ ssize_t r;
+
+ if ((r = write(2, n, strlen(n))) < 0)
+ break;
+
+ n += r;
+ }
+
+ abort();
+}
+
+/* Default implementation for avahi_malloc() */
+static void* xmalloc(size_t size) {
+ void *p;
+
+ if (size == 0)
+ return NULL;
+
+ if (!(p = malloc(size)))
+ oom();
+
+ return p;
+}
+
+/* Default implementation for avahi_realloc() */
+static void *xrealloc(void *p, size_t size) {
+
+ if (size == 0) {
+ free(p);
+ return NULL;
+ }
+
+ if (!(p = realloc(p, size)))
+ oom();
+
+ return p;
+}
+
+/* Default implementation for avahi_calloc() */
+static void *xcalloc(size_t nmemb, size_t size) {
+ void *p;
+
+ if (size == 0 || nmemb == 0)
+ return NULL;
+
+ if (!(p = calloc(nmemb, size)))
+ oom();
+
+ return p;
+}
+
void *avahi_malloc(size_t size) {
if (size <= 0)
return NULL;
if (!allocator)
- return malloc(size);
+ return xmalloc(size);
assert(allocator->malloc);
return allocator->malloc(size);
return NULL;
if (!allocator)
- return calloc(1, size);
+ return xcalloc(1, size);
if (allocator->calloc)
return allocator->calloc(1, size);
void *avahi_realloc(void *p, size_t size) {
+ if (size == 0) {
+ avahi_free(p);
+ return NULL;
+ }
+
if (!allocator)
- return realloc(p, size);
+ return xrealloc(p, size);
assert(allocator->realloc);
return allocator->realloc(p, size);