#pragma once
#if ENABLE(WEBASSEMBLY)
#include "MacroAssemblerCodeRef.h"
#include "WasmEmbedder.h"
#include "WasmTierUpCount.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 {
class Callee;
struct Context;
class BBQPlan;
class OMGPlan;
struct ModuleInformation;
struct UnlinkedWasmToWasmCall;
typedef void** WasmEntrypointLoadLocation;
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&, CreateEmbedderWrapper&&, ThrowWasmException);
void waitUntilFinished();
void compileAsync(Context*, AsyncCompilationCallback&&);
bool compilationFinished()
{
return m_compilationFinished.load();
}
bool runnable() { return compilationFinished() && !m_errorMessage; }
String errorMessage()
{
ASSERT(!runnable());
CString cString = m_errorMessage.ascii();
return String(cString.data());
}
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_optimizedCallees[calleeIndex])
return *m_optimizedCallees[calleeIndex].get();
return *m_callees[calleeIndex].get();
}
WasmEntrypointLoadLocation wasmEntrypointLoadLocationFromFunctionIndexSpace(unsigned functionIndexSpace)
{
RELEASE_ASSERT(functionIndexSpace >= functionImportCount());
unsigned calleeIndex = functionIndexSpace - functionImportCount();
return &m_wasmIndirectCallEntryPoints[calleeIndex];
}
TierUpCount& tierUpCount(uint32_t functionIndex)
{
return m_tierUpCounts[functionIndex];
}
bool isSafeToRun(MemoryMode);
MemoryMode mode() const { return m_mode; }
~CodeBlock();
private:
friend class OMGPlan;
CodeBlock(Context*, MemoryMode, ModuleInformation&, CreateEmbedderWrapper&&, ThrowWasmException);
void setCompilationFinished();
unsigned m_calleeCount;
MemoryMode m_mode;
Vector<RefPtr<Callee>> m_callees;
Vector<RefPtr<Callee>> m_optimizedCallees;
HashMap<uint32_t, RefPtr<Callee>, typename DefaultHash<uint32_t>::Hash, WTF::UnsignedWithZeroKeyHashTraits<uint32_t>> m_embedderCallees;
Vector<void*> m_wasmIndirectCallEntryPoints;
Vector<TierUpCount> m_tierUpCounts;
Vector<Vector<UnlinkedWasmToWasmCall>> m_wasmToWasmCallsites;
Vector<MacroAssemblerCodeRef> m_wasmToWasmExitStubs;
RefPtr<BBQPlan> m_plan;
std::atomic<bool> m_compilationFinished { false };
String m_errorMessage;
Lock m_lock;
};
} }
#endif // ENABLE(WEBASSEMBLY)