Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_utilities / lib / trackingallocator.h

diff --git a/Security/libsecurity_utilities/lib/trackingallocator.h b/Security/libsecurity_utilities/lib/trackingallocator.h
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+/*
+ * Copyright (c) 2000-2004,2011,2014 Apple Inc. All Rights Reserved.
+ * 
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+
+//
+// trackingallocator - Allocator that keeps track of allocations
+//
+#ifndef _H_TRACKINGALLOCATOR
+#define _H_TRACKINGALLOCATOR
+
+#include <security_utilities/alloc.h>
+#include <set>
+
+namespace Security
+{
+
+//
+// A Allocator that keeps track of allocations and can throw everything
+// away unless explicitly committed.
+//
+class TrackingAllocator : public Allocator
+{
+public:
+       TrackingAllocator(Allocator &inAllocator) : subAllocator(inAllocator) {}
+       virtual ~TrackingAllocator();
+       
+       Allocator &subAllocator;
+
+       // standard Allocator operations
+       void *malloc(size_t inSize) throw(std::bad_alloc);
+       void free(void *inAddress) throw();
+       void *realloc(void *inAddress, size_t inNewSize) throw(std::bad_alloc);
+
+       // reset frees all memory; commit forgets about it all
+       void reset();
+       void commit();
+       
+private:
+       typedef std::set<void *> AllocSet;
+       AllocSet mAllocSet;
+};
+
+} // end namespace Security
+
+#endif //_H_TRACKINGALLOCATOR