turnidge@google.com
0ddd4c04e9
This change hopefully takes care of the non-mac build issues. The checked mode failures are fixed in a separate cl. Review URL: https://chromiumcodereview.appspot.com//9316071 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@3863 260f80e4-7a28-3924-810f-c04153c831b5
54 lines
1.5 KiB
C++
54 lines
1.5 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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#include "vm/longjump.h"
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#include "include/dart_api.h"
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#include "vm/dart_api_impl.h"
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#include "vm/isolate.h"
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#include "vm/object.h"
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#include "vm/object_store.h"
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#include "vm/os.h"
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namespace dart {
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jmp_buf* LongJump::Set() {
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top_ = Isolate::Current()->top_resource();
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return &environment_;
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}
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bool LongJump::IsSafeToJump() {
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// We do not want to jump past Dart frames. Note that this code
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// assumes the stack grows from high to low.
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Isolate* isolate = Isolate::Current();
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uword jumpbuf_addr = reinterpret_cast<uword>(this);
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return (isolate->top_exit_frame_info() == 0 ||
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jumpbuf_addr < isolate->top_exit_frame_info());
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}
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void LongJump::Jump(int value, const Error& error) {
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// A zero is the default return value from setting up a LongJump using Set.
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ASSERT(value != 0);
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ASSERT(IsSafeToJump());
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Isolate* isolate = Isolate::Current();
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// Remember the error in the sticky error of this isolate.
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isolate->object_store()->set_sticky_error(error);
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// Destruct all the active StackResource objects.
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StackResource* current_resource = isolate->top_resource();
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while (current_resource != top_) {
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current_resource->~StackResource();
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current_resource = isolate->top_resource();
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}
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longjmp(environment_, value);
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UNREACHABLE();
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}
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} // namespace dart
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