--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/wtf/wince/FastMallocWince.h Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2007-2009 Torch Mobile, Inc. All rights reserved
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef FastMallocWince_h
+#define FastMallocWince_h
+
+#include <new.h>
+
+#ifdef __cplusplus
+#include <new>
+#include "MemoryManager.h"
+extern "C" {
+#endif
+
+void* fastMalloc(size_t n);
+void* fastCalloc(size_t n_elements, size_t element_size);
+void fastFree(void* p);
+void* fastRealloc(void* p, size_t n);
+void* fastZeroedMalloc(size_t n);
+// These functions return 0 if an allocation fails.
+void* tryFastMalloc(size_t n);
+void* tryFastZeroedMalloc(size_t n);
+void* tryFastCalloc(size_t n_elements, size_t element_size);
+void* tryFastRealloc(void* p, size_t n);
+char* fastStrDup(const char*);
+
+#ifndef NDEBUG
+void fastMallocForbid();
+void fastMallocAllow();
+#endif
+
+#if !defined(USE_SYSTEM_MALLOC) || !USE_SYSTEM_MALLOC
+
+#define malloc(n) fastMalloc(n)
+#define calloc(n_elements, element_size) fastCalloc(n_elements, element_size)
+#define realloc(p, n) fastRealloc(p, n)
+#define free(p) fastFree(p)
+#define strdup(p) fastStrDup(p)
+
+#else
+
+#define strdup(p) _strdup(p)
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#ifdef __cplusplus
+#if !defined(USE_SYSTEM_MALLOC) || !USE_SYSTEM_MALLOC
+static inline void* __cdecl operator new(size_t s) { return fastMalloc(s); }
+static inline void __cdecl operator delete(void* p) { fastFree(p); }
+static inline void* __cdecl operator new[](size_t s) { return fastMalloc(s); }
+static inline void __cdecl operator delete[](void* p) { fastFree(p); }
+static inline void* operator new(size_t s, const std::nothrow_t&) throw() { return fastMalloc(s); }
+static inline void operator delete(void* p, const std::nothrow_t&) throw() { fastFree(p); }
+static inline void* operator new[](size_t s, const std::nothrow_t&) throw() { return fastMalloc(s); }
+static inline void operator delete[](void* p, const std::nothrow_t&) throw() { fastFree(p); }
+#endif
+
+namespace WTF {
+ // This defines a type which holds an unsigned integer and is the same
+ // size as the minimally aligned memory allocation.
+ typedef unsigned long long AllocAlignmentInteger;
+
+ namespace Internal {
+ enum AllocType { // Start with an unusual number instead of zero, because zero is common.
+ AllocTypeMalloc = 0x375d6750, // Encompasses fastMalloc, fastZeroedMalloc, fastCalloc, fastRealloc.
+ AllocTypeClassNew, // Encompasses class operator new from FastAllocBase.
+ AllocTypeClassNewArray, // Encompasses class operator new[] from FastAllocBase.
+ AllocTypeFastNew, // Encompasses fastNew.
+ AllocTypeFastNewArray, // Encompasses fastNewArray.
+ AllocTypeNew, // Encompasses global operator new.
+ AllocTypeNewArray // Encompasses global operator new[].
+ };
+ }
+
+
+#if ENABLE(FAST_MALLOC_MATCH_VALIDATION)
+
+ // Malloc validation is a scheme whereby a tag is attached to an
+ // allocation which identifies how it was originally allocated.
+ // This allows us to verify that the freeing operation matches the
+ // allocation operation. If memory is allocated with operator new[]
+ // but freed with free or delete, this system would detect that.
+ // In the implementation here, the tag is an integer prepended to
+ // the allocation memory which is assigned one of the AllocType
+ // enumeration values. An alternative implementation of this
+ // scheme could store the tag somewhere else or ignore it.
+ // Users of FastMalloc don't need to know or care how this tagging
+ // is implemented.
+
+ namespace Internal {
+
+ // Return the AllocType tag associated with the allocated block p.
+ inline AllocType fastMallocMatchValidationType(const void* p)
+ {
+ const AllocAlignmentInteger* type = static_cast<const AllocAlignmentInteger*>(p) - 1;
+ return static_cast<AllocType>(*type);
+ }
+
+ // Return the address of the AllocType tag associated with the allocated block p.
+ inline AllocAlignmentInteger* fastMallocMatchValidationValue(void* p)
+ {
+ return reinterpret_cast<AllocAlignmentInteger*>(static_cast<char*>(p) - sizeof(AllocAlignmentInteger));
+ }
+
+ // Set the AllocType tag to be associaged with the allocated block p.
+ inline void setFastMallocMatchValidationType(void* p, AllocType allocType)
+ {
+ AllocAlignmentInteger* type = static_cast<AllocAlignmentInteger*>(p) - 1;
+ *type = static_cast<AllocAlignmentInteger>(allocType);
+ }
+
+ // Handle a detected alloc/free mismatch. By default this calls CRASH().
+ void fastMallocMatchFailed(void* p);
+
+ } // namespace Internal
+
+ // This is a higher level function which is used by FastMalloc-using code.
+ inline void fastMallocMatchValidateMalloc(void* p, Internal::AllocType allocType)
+ {
+ if (!p)
+ return;
+
+ Internal::setFastMallocMatchValidationType(p, allocType);
+ }
+
+ // This is a higher level function which is used by FastMalloc-using code.
+ inline void fastMallocMatchValidateFree(void* p, Internal::AllocType allocType)
+ {
+ if (!p)
+ return;
+
+ if (Internal::fastMallocMatchValidationType(p) != allocType)
+ Internal::fastMallocMatchFailed(p);
+ Internal::setFastMallocMatchValidationType(p, Internal::AllocTypeMalloc); // Set it to this so that fastFree thinks it's OK.
+ }
+
+#else
+
+ inline void fastMallocMatchValidateMalloc(void*, Internal::AllocType)
+ {
+ }
+
+ inline void fastMallocMatchValidateFree(void*, Internal::AllocType)
+ {
+ }
+
+#endif
+
+} // namespace WTF
+
+#endif
+
+#endif // FastMallocWince_h
+