mymemory: implement snapshot_*() allocations on model-checker's heap

diff --git a/mymemory.cc b/mymemory.cc
index 387d6de..08bd4e4 100644 (file)
--- a/mymemory.cc
+++ b/mymemory.cc
@@ -73,19 +73,31 @@ void *model_malloc(size_t size)
 /** @brief Snapshotting malloc, for use by model-checker (not user progs) */
 void * snapshot_malloc(size_t size)
 {
-       return malloc(size);
+       void *tmp = mspace_malloc(model_snapshot_space, size);
+       ASSERT(tmp);
+       return tmp;
 }
 
 /** @brief Snapshotting calloc, for use by model-checker (not user progs) */
 void * snapshot_calloc(size_t count, size_t size)
 {
-       return calloc(count, size);
+       void *tmp = mspace_calloc(model_snapshot_space, count, size);
+       ASSERT(tmp);
+       return tmp;
+}
+
+/** @brief Snapshotting realloc, for use by model-checker (not user progs) */
+void *snapshot_realloc(void *ptr, size_t size)
+{
+       void *tmp = mspace_realloc(model_snapshot_space, ptr, size);
+       ASSERT(tmp);
+       return tmp;
 }
 
 /** @brief Snapshotting free, for use by model-checker (not user progs) */
 void snapshot_free(void *ptr)
 {
-       free(ptr);
+       mspace_free(model_snapshot_space, ptr);
 }
 
 /** Non-snapshotting free for our use. */

diff --git a/mymemory.h b/mymemory.h
index b224206..d7c4f99 100644 (file)
--- a/mymemory.h
+++ b/mymemory.h
@@ -47,6 +47,7 @@ void model_free(void *ptr);
 
 void * snapshot_malloc(size_t size);
 void * snapshot_calloc(size_t count, size_t size);
+void * snapshot_realloc(void *ptr, size_t size);
 void snapshot_free(void *ptr);
 
 /** @brief Provides a non-snapshotting allocator for use in STL classes.