blob: ce4f813f7629954a58ad94c06701de378e38c482 [file] [log] [blame]
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#ifndef VM_LONGJUMP_H_
#define VM_LONGJUMP_H_
#include <setjmp.h>
#include "vm/allocation.h"
#include "vm/isolate.h"
namespace dart {
class Error;
class LongJumpScope : public StackResource {
public:
LongJumpScope()
: StackResource(Thread::Current()),
top_(NULL),
base_(Thread::Current()->long_jump_base()) {
Thread::Current()->set_long_jump_base(this);
}
~LongJumpScope() {
Thread::Current()->set_long_jump_base(base_);
}
jmp_buf* Set();
void Jump(int value, const Error& error);
// Would it be safe to use this longjump?
//
// Checks to make sure that the jump would not cross Dart frames.
bool IsSafeToJump();
private:
jmp_buf environment_;
StackResource* top_;
LongJumpScope* base_;
DISALLOW_COPY_AND_ASSIGN(LongJumpScope);
};
} // namespace dart
#endif // VM_LONGJUMP_H_