turnidge@google.com
2803d78dfd
Instead of passing a size in bytes to the allocation function, we now have a templatized Alloc function: zone->Alloc<Type>(len) This is better for security, as we can check for integer overflow in the size computation before performing the allocation. Before, we often failed to check this. Review URL: https://chromiumcodereview.appspot.com//10836061 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@10254 260f80e4-7a28-3924-810f-c04153c831b5
28 lines
779 B
C++
28 lines
779 B
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/allocation.h"
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#include "platform/assert.h"
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#include "vm/isolate.h"
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#include "vm/zone.h"
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namespace dart {
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ZoneAllocated::~ZoneAllocated() {
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UNREACHABLE();
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}
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void* ZoneAllocated::operator new(uword size) {
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Isolate* isolate = Isolate::Current();
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ASSERT(isolate != NULL);
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ASSERT(isolate->current_zone() != NULL);
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if (size > static_cast<uword>(kIntptrMax)) {
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FATAL1("ZoneAllocated object has unexpectedly large size %uld", size);
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}
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return reinterpret_cast<void*>(isolate->current_zone()->AllocUnsafe(size));
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}
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} // namespace dart
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