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47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
// Copyright (c) 2011, 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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#ifndef RUNTIME_VM_LONGJUMP_H_
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#define RUNTIME_VM_LONGJUMP_H_
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#include <setjmp.h>
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#include "vm/allocation.h"
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#include "vm/isolate.h"
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namespace dart {
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class Error;
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class LongJumpScope : public StackResource {
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public:
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LongJumpScope()
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: StackResource(Thread::Current()),
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top_(NULL),
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base_(Thread::Current()->long_jump_base()) {
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Thread::Current()->set_long_jump_base(this);
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}
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~LongJumpScope() { Thread::Current()->set_long_jump_base(base_); }
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jmp_buf* Set();
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void Jump(int value, const Error& error);
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// Would it be safe to use this longjump?
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//
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// Checks to make sure that the jump would not cross Dart frames.
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bool IsSafeToJump();
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private:
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jmp_buf environment_;
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StackResource* top_;
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LongJumpScope* base_;
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DISALLOW_COPY_AND_ASSIGN(LongJumpScope);
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};
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} // namespace dart
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#endif // RUNTIME_VM_LONGJUMP_H_
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