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/*
* Copyright (C) 2017-2025 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <wtf/Expected.h>
#include <wtf/Noncopyable.h>
namespace JSC {
class CodeBlock;
class CallFrame;
class Heap;
class JSCell;
class JSValue;
class VM;
class VMInspector {
WTF_FORBID_HEAP_ALLOCATION;
WTF_MAKE_NONCOPYABLE(VMInspector);
public:
enum class Error {
None,
TimedOut
};
// Returns null if the callFrame doesn't actually correspond to any active VM.
JS_EXPORT_PRIVATE static VM* vmForCallFrame(CallFrame*);
JS_EXPORT_PRIVATE static Expected<bool, Error> isValidExecutableMemory(void*);
JS_EXPORT_PRIVATE static Expected<CodeBlock*, Error> codeBlockForMachinePC(void*);
JS_EXPORT_PRIVATE static bool currentThreadOwnsJSLock(VM*);
JS_EXPORT_PRIVATE static void gc(VM*);
JS_EXPORT_PRIVATE static void edenGC(VM*);
JS_EXPORT_PRIVATE static bool isInHeap(Heap*, void*);
JS_EXPORT_PRIVATE static bool isValidCell(Heap*, JSCell*);
JS_EXPORT_PRIVATE static bool isValidCodeBlock(VM*, CodeBlock*);
JS_EXPORT_PRIVATE static CodeBlock* codeBlockForFrame(VM*, CallFrame* topCallFrame, unsigned frameNumber);
JS_EXPORT_PRIVATE static void dumpCallFrame(VM*, CallFrame*, unsigned framesToSkip = 0);
JS_EXPORT_PRIVATE static void dumpRegisters(CallFrame*);
JS_EXPORT_PRIVATE static void dumpStack(VM*, CallFrame* topCallFrame, unsigned framesToSkip = 0);
JS_EXPORT_PRIVATE static void dumpValue(JSValue);
JS_EXPORT_PRIVATE static void dumpCellMemory(JSCell*);
JS_EXPORT_PRIVATE static void dumpCellMemoryToStream(JSCell*, PrintStream&);
JS_EXPORT_PRIVATE static void dumpSubspaceHashes(VM*);
#if USE(JSVALUE64)
static bool verifyCell(VM&, JSCell*);
#endif
};
} // namespace JSC
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