#pragma once
#if ENABLE(WEBASSEMBLY)
#include "MacroAssemblerCodeRef.h"
#include "WasmCallee.h"
#include "WasmEmbedder.h"
#include <wtf/CrossThreadCopier.h>
#include <wtf/Lock.h>
#include <wtf/RefPtr.h>
#include <wtf/SharedTask.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/text/WTFString.h>
namespace JSC {
namespace Wasm {
struct Context;
class EntryPlan;
struct ModuleInformation;
struct UnlinkedWasmToWasmCall;
enum class MemoryMode : uint8_t;
class CodeBlock : public ThreadSafeRefCounted<CodeBlock> {
public:
typedef void CallbackType(Ref<CodeBlock>&&);
using AsyncCompilationCallback = RefPtr<WTF::SharedTask<CallbackType>>;
static Ref<CodeBlock> create(Context*, MemoryMode, ModuleInformation&, RefPtr<LLIntCallees>);
void waitUntilFinished();
void compileAsync(Context*, AsyncCompilationCallback&&);
bool compilationFinished()
{
return m_compilationFinished.load();
}
bool runnable() { return compilationFinished() && !m_errorMessage; }
String errorMessage()
{
ASSERT(!runnable());
return crossThreadCopy(m_errorMessage);
}
unsigned functionImportCount() const { return m_wasmToWasmExitStubs.size(); }
Callee& embedderEntrypointCalleeFromFunctionIndexSpace(unsigned functionIndexSpace)
{
ASSERT(runnable());
RELEASE_ASSERT(functionIndexSpace >= functionImportCount());
unsigned calleeIndex = functionIndexSpace - functionImportCount();
auto callee = m_embedderCallees.get(calleeIndex);
RELEASE_ASSERT(callee);
return *callee;
}
Callee& wasmEntrypointCalleeFromFunctionIndexSpace(unsigned functionIndexSpace)
{
ASSERT(runnable());
RELEASE_ASSERT(functionIndexSpace >= functionImportCount());
unsigned calleeIndex = functionIndexSpace - functionImportCount();
if (m_omgCallees[calleeIndex])
return *m_omgCallees[calleeIndex].get();
if (m_bbqCallees[calleeIndex])
return *m_bbqCallees[calleeIndex].get();
return m_llintCallees->at(calleeIndex).get();
}
BBQCallee& wasmBBQCalleeFromFunctionIndexSpace(unsigned functionIndexSpace)
{
ASSERT(runnable());
RELEASE_ASSERT(functionIndexSpace >= functionImportCount());
unsigned calleeIndex = functionIndexSpace - functionImportCount();
return *m_bbqCallees[calleeIndex].get();
}
MacroAssemblerCodePtr<WasmEntryPtrTag>* entrypointLoadLocationFromFunctionIndexSpace(unsigned functionIndexSpace)
{
RELEASE_ASSERT(functionIndexSpace >= functionImportCount());
unsigned calleeIndex = functionIndexSpace - functionImportCount();
return &m_wasmIndirectCallEntryPoints[calleeIndex];
}
MacroAssemblerCodePtr<WasmEntryPtrTag> wasmToWasmExitStub(unsigned functionIndex)
{
return m_wasmToWasmExitStubs[functionIndex].code();
}
bool isSafeToRun(MemoryMode);
MemoryMode mode() const { return m_mode; }
~CodeBlock();
private:
friend class Plan;
friend class BBQPlan;
friend class OMGPlan;
friend class OMGForOSREntryPlan;
CodeBlock(Context*, MemoryMode, ModuleInformation&, RefPtr<LLIntCallees>);
void setCompilationFinished();
unsigned m_calleeCount;
MemoryMode m_mode;
Vector<RefPtr<OMGCallee>> m_omgCallees;
Vector<RefPtr<BBQCallee>> m_bbqCallees;
RefPtr<LLIntCallees> m_llintCallees;
HashMap<uint32_t, RefPtr<EmbedderEntrypointCallee>, DefaultHash<uint32_t>, WTF::UnsignedWithZeroKeyHashTraits<uint32_t>> m_embedderCallees;
Vector<MacroAssemblerCodePtr<WasmEntryPtrTag>> m_wasmIndirectCallEntryPoints;
Vector<Vector<UnlinkedWasmToWasmCall>> m_wasmToWasmCallsites;
Vector<MacroAssemblerCodeRef<WasmEntryPtrTag>> m_wasmToWasmExitStubs;
RefPtr<EntryPlan> m_plan;
std::atomic<bool> m_compilationFinished { false };
String m_errorMessage;
Lock m_lock;
};
} }
#endif // ENABLE(WEBASSEMBLY)