mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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98 lines
3.5 KiB
C++
98 lines
3.5 KiB
C++
/*
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* Copyright (C) 2017-2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "CallFrame.h"
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#include "VM.h"
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#include <wtf/DoublyLinkedList.h>
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#include <wtf/Expected.h>
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#include <wtf/Lock.h>
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namespace JSC {
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class VMInspector {
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WTF_MAKE_FAST_ALLOCATED;
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WTF_MAKE_NONCOPYABLE(VMInspector);
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VMInspector() = default;
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public:
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enum class Error {
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None,
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TimedOut
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};
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typedef WTF::Locker<Lock> Locker;
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static VMInspector& instance();
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void add(VM*);
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void remove(VM*);
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Lock& getLock() { return m_lock; }
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enum class FunctorStatus {
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Continue,
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Done
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};
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template <typename Functor>
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void iterate(const Locker&, const Functor& functor) { iterate(functor); }
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Expected<Locker, Error> lock(Seconds timeout = Seconds::infinity());
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Expected<bool, Error> isValidExecutableMemory(const Locker&, void*);
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Expected<CodeBlock*, Error> codeBlockForMachinePC(const Locker&, void*);
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JS_EXPORT_PRIVATE static bool currentThreadOwnsJSLock(ExecState*);
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JS_EXPORT_PRIVATE static void gc(ExecState*);
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JS_EXPORT_PRIVATE static void edenGC(ExecState*);
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JS_EXPORT_PRIVATE static bool isInHeap(Heap*, void*);
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JS_EXPORT_PRIVATE static bool isValidCell(Heap*, JSCell*);
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JS_EXPORT_PRIVATE static bool isValidCodeBlock(ExecState*, CodeBlock*);
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JS_EXPORT_PRIVATE static CodeBlock* codeBlockForFrame(CallFrame* topCallFrame, unsigned frameNumber);
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JS_EXPORT_PRIVATE static void dumpCallFrame(CallFrame*, unsigned framesToSkip = 0);
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JS_EXPORT_PRIVATE static void dumpRegisters(CallFrame*);
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JS_EXPORT_PRIVATE static void dumpStack(CallFrame* topCallFrame, unsigned framesToSkip = 0);
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JS_EXPORT_PRIVATE static void dumpValue(JSValue);
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JS_EXPORT_PRIVATE static void dumpCellMemory(JSCell*);
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JS_EXPORT_PRIVATE static void dumpCellMemoryToStream(JSCell*, PrintStream&);
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JS_EXPORT_PRIVATE static void dumpSubspaceHashes(VM*);
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private:
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template <typename Functor> void iterate(const Functor& functor)
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{
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for (VM* vm = m_list.head(); vm; vm = vm->next()) {
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FunctorStatus status = functor(*vm);
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if (status == FunctorStatus::Done)
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return;
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}
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}
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Lock m_lock;
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DoublyLinkedList<VM> m_list;
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};
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} // namespace JSC
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