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/*
* Copyright (C) 2016-2017 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
#if ENABLE(WEBASSEMBLY)
#include "CompilationResult.h"
#include "WasmJS.h"
#include "WasmModuleInformation.h"
#include "WasmOMGIRGenerator.h"
#include <wtf/Bag.h>
#include <wtf/CrossThreadCopier.h>
#include <wtf/SharedTask.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/Vector.h>
namespace JSC {
class CallLinkInfo;
class VM;
namespace Wasm {
class CalleeGroup;
class Plan : public ThreadSafeRefCounted<Plan> {
public:
typedef void CallbackType(Plan&);
using CompletionTask = RefPtr<SharedTask<CallbackType>>;
static CompletionTask dontFinalize() { return createSharedTask<CallbackType>([](Plan&) { }); }
Plan(VM&, Ref<ModuleInformation>, CompletionTask&&);
// Note: This constructor should only be used if you are not actually building a module e.g. validation/function tests
JS_EXPORT_PRIVATE Plan(VM&, CompletionTask&&);
virtual JS_EXPORT_PRIVATE ~Plan();
// If you guarantee the ordering here, you can rely on FIFO of the completion tasks being called.
// Return false if the task plan is already completed.
bool addCompletionTaskIfNecessary(VM&, CompletionTask&&);
void setMode(MemoryMode mode) { m_mode = mode; }
ALWAYS_INLINE MemoryMode mode() const { return m_mode; }
String errorMessage() const { return crossThreadCopy(m_errorMessage); }
enum class Error : uint8_t {
Default = 0,
OutOfMemory,
Parse
};
Error error() const { return m_error; }
bool WARN_UNUSED_RETURN failed() const { return !m_errorMessage.isNull(); }
virtual bool hasWork() const = 0;
virtual void work() = 0;
virtual bool multiThreaded() const = 0;
void waitForCompletion();
// Returns true if it cancelled the plan.
bool tryRemoveContextAndCancelIfLast(VM&);
protected:
void runCompletionTasks() WTF_REQUIRES_LOCK(m_lock);
void fail(String&& errorMessage, Error = Error::Default) WTF_REQUIRES_LOCK(m_lock);
virtual bool isComplete() const = 0;
virtual void complete() WTF_REQUIRES_LOCK(m_lock) = 0;
CString signpostMessage(CompilationMode, uint32_t functionIndexSpace) const;
void beginCompilerSignpost(CompilationMode, uint32_t functionIndexSpace) const;
void beginCompilerSignpost(const Callee&) const;
void endCompilerSignpost(CompilationMode, uint32_t functionIndexSpace) const;
void endCompilerSignpost(const Callee&) const;
MemoryMode m_mode { MemoryMode::BoundsChecking };
Lock m_lock;
Condition m_completed;
Ref<ModuleInformation> m_moduleInformation;
Vector<std::pair<VM*, CompletionTask>, 1> m_completionTasks;
String m_errorMessage;
Error m_error { Error::Default };
};
} } // namespace JSC::Wasm
#endif // ENABLE(WEBASSEMBLY)
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