From: Brian Norris <banorris@uci.edu>
Date: Fri, 7 Dec 2012 05:50:33 +0000 (-0800)
Subject: mymemory: add placement new
X-Git-Tag: oopsla2013~454
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9885ab0975d0b812219321ca14794d0f2ca3802c;p=model-checker.git

mymemory: add placement new

I will need to use the placement new operator, if I want to allocate an
object with an allocator other than the one I established (SNAPSHOTALLOC
vs. MODELALLOC).
---

diff --git a/mymemory.h b/mymemory.h
index 05b89be..794c4e5 100644
--- a/mymemory.h
+++ b/mymemory.h
@@ -23,6 +23,9 @@
 	} \
 	void operator delete[](void *p, size_t size) { \
 		model_free(p); \
+	} \
+	void * operator new(size_t size, void *p) { /* placement new */ \
+		return p; \
 	}
 
 /** SNAPSHOTALLOC declares the allocators for a class to allocate
@@ -39,6 +42,9 @@
 	} \
 	void operator delete[](void *p, size_t size) { \
 		snapshot_free(p); \
+	} \
+	void * operator new(size_t size, void *p) { /* placement new */ \
+		return p; \
 	}
 
 void *model_malloc(size_t size);