/* Redefine the classical malloc/free/realloc functions so that they fit well in the mmalloc framework */
#include "mmprivate.h"
+#include "gras_config.h"
+#include <math.h>
-static void *__mmalloc_current_heap=NULL; /* The heap we are currently using. */
-void* mmalloc_get_current_heap(void) {
+/* The mmalloc() package can use a single implicit malloc descriptor
+ for mmalloc/mrealloc/mfree operations which do not supply an explicit
+ descriptor. This allows mmalloc() to provide
+ backwards compatibility with the non-mmap'd version. */
+xbt_mheap_t __mmalloc_default_mdp = NULL;
+
+
+static xbt_mheap_t __mmalloc_current_heap = NULL; /* The heap we are currently using. */
+
+xbt_mheap_t mmalloc_get_current_heap(void)
+{
return __mmalloc_current_heap;
}
-void mmalloc_set_current_heap(void *new_heap) {
- __mmalloc_current_heap=new_heap;
+
+void mmalloc_set_current_heap(xbt_mheap_t new_heap)
+{
+ __mmalloc_current_heap = new_heap;
}
-#ifdef MMALLOC_WANT_OVERIDE_LEGACY
-void *malloc(size_t n) {
- void *ret = mmalloc(__mmalloc_current_heap, n);
+#ifdef MMALLOC_WANT_OVERRIDE_LEGACY
+void *malloc(size_t n)
+{
+ xbt_mheap_t mdp = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit();
+
+ LOCK(mdp);
+ void *ret = mmalloc(mdp, n);
+ UNLOCK(mdp);
return ret;
}
-void *calloc(size_t nmemb, size_t size) {
- size_t total_size = nmemb * size;
+void *calloc(size_t nmemb, size_t size)
+{
+ xbt_mheap_t mdp = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit();
- void *ret = mmalloc(__mmalloc_current_heap, total_size);
+ LOCK(mdp);
+ void *ret = mmalloc(mdp, nmemb*size);
+ UNLOCK(mdp);
+ memset(ret, 0, nmemb * size);
- /* Fill the allocated memory with zeroes to mimic calloc behaviour */
- memset(ret,'\0', total_size);
return ret;
}
-void *realloc(void *p, size_t s) {
+void *realloc(void *p, size_t s)
+{
void *ret = NULL;
+ xbt_mheap_t mdp = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit();
- if (s) {
- if (p)
- ret = mrealloc(__mmalloc_current_heap, p,s);
- else
- ret = mmalloc(__mmalloc_current_heap,s);
- } else {
- if (p)
- mfree(__mmalloc_current_heap,p);
- }
+ LOCK(mdp);
+ ret = mrealloc(mdp, p, s);
+ UNLOCK(mdp);
return ret;
}
-void free(void *p) {
- return mfree(__mmalloc_current_heap, p);
+void free(void *p)
+{
+ xbt_mheap_t mdp = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit();
+
+ LOCK(mdp);
+ mfree(mdp, p);
+ UNLOCK(mdp);
}
#endif
-/* Make sure it works with md==NULL */
-#define HEAP_OFFSET 40960000 /* Safety gap from the heap's break address */
-
-void *mmalloc_get_default_md(void) {
- xbt_assert(__mmalloc_default_mdp);
- return __mmalloc_default_mdp;
-}
-
-/* Initialize the default malloc descriptor. */
-#include "xbt_modinter.h"
-void mmalloc_preinit(void) {
- __mmalloc_default_mdp = mmalloc_attach(-1, (char *)sbrk(0) + HEAP_OFFSET);
- xbt_assert(__mmalloc_default_mdp != NULL);
-}
-void mmalloc_postexit(void) {
- /* Do not detach the default mdp or ldl won't be able to free the memory it allocated since we're in memory */
- // mmalloc_detach(__mmalloc_default_mdp);
-}
