Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame^] | 1 | // Copyright 2006-2008 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | // |
| 28 | |
| 29 | #ifndef V8_HANDLES_INL_H_ |
| 30 | #define V8_HANDLES_INL_H_ |
| 31 | |
| 32 | #include "apiutils.h" |
| 33 | #include "handles.h" |
| 34 | #include "api.h" |
| 35 | |
| 36 | namespace v8 { |
| 37 | namespace internal { |
| 38 | |
| 39 | template<class T> |
| 40 | Handle<T>::Handle(T* obj) { |
| 41 | ASSERT(!obj->IsFailure()); |
| 42 | location_ = HandleScope::CreateHandle(obj); |
| 43 | } |
| 44 | |
| 45 | |
| 46 | template <class T> |
| 47 | inline T* Handle<T>::operator*() const { |
| 48 | ASSERT(location_ != NULL); |
| 49 | ASSERT(reinterpret_cast<Address>(*location_) != kHandleZapValue); |
| 50 | return *location_; |
| 51 | } |
| 52 | |
| 53 | |
| 54 | #ifdef DEBUG |
| 55 | inline NoHandleAllocation::NoHandleAllocation() { |
| 56 | v8::ImplementationUtilities::HandleScopeData* current = |
| 57 | v8::ImplementationUtilities::CurrentHandleScope(); |
| 58 | extensions_ = current->extensions; |
| 59 | // Shrink the current handle scope to make it impossible to do |
| 60 | // handle allocations without an explicit handle scope. |
| 61 | current->limit = current->next; |
| 62 | current->extensions = -1; |
| 63 | } |
| 64 | |
| 65 | |
| 66 | inline NoHandleAllocation::~NoHandleAllocation() { |
| 67 | // Restore state in current handle scope to re-enable handle |
| 68 | // allocations. |
| 69 | v8::ImplementationUtilities::CurrentHandleScope()->extensions = extensions_; |
| 70 | } |
| 71 | #endif |
| 72 | |
| 73 | |
| 74 | } } // namespace v8::internal |
| 75 | |
| 76 | #endif // V8_HANDLES_INL_H_ |