1// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
2// for details. All rights reserved. Use of this source code is governed by a
3// BSD-style license that can be found in the LICENSE file.
4
5#include "vm/longjump.h"
6
7#include "include/dart_api.h"
8
9#include "vm/dart_api_impl.h"
10#include "vm/isolate.h"
11#include "vm/object.h"
12#include "vm/os.h"
13
14namespace dart {
15
16jmp_buf* LongJumpScope::Set() {
17 ASSERT(top_ == NULL);
18 top_ = Thread::Current()->top_resource();
19 return &environment_;
20}
21
22void LongJumpScope::Jump(int value, const Error& error) {
23 // A zero is the default return value from setting up a LongJumpScope
24 // using Set.
25 ASSERT(value != 0);
26 ASSERT(!error.IsNull());
27
28 Thread* thread = Thread::Current();
29 DEBUG_ASSERT(thread->TopErrorHandlerIsSetJump());
30
31#if defined(DEBUG)
32#define CHECK_REUSABLE_HANDLE(name) \
33 ASSERT(!thread->reusable_##name##_handle_scope_active());
34 REUSABLE_HANDLE_LIST(CHECK_REUSABLE_HANDLE)
35#undef CHECK_REUSABLE_HANDLE
36#endif // defined(DEBUG)
37
38 // Remember the error in the sticky error of this isolate.
39 thread->set_sticky_error(error);
40
41 // Destruct all the active StackResource objects.
42 StackResource::UnwindAbove(thread, top_);
43 longjmp(environment_, value);
44 UNREACHABLE();
45}
46
47} // namespace dart
48