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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef jit_CompileWrappers_h
#define jit_CompileWrappers_h
#include <stdint.h>
#include "gc/Pretenuring.h"
#include "js/TypeDecls.h"
struct JSAtomState;
namespace mozilla::non_crypto {
class XorShift128PlusRNG;
}
namespace JS {
enum class TraceKind;
}
namespace js {
class GeckoProfilerRuntime;
class GlobalObject;
struct JSDOMCallbacks;
class PropertyName;
class StaticStrings;
struct WellKnownSymbols;
using DOMCallbacks = struct JSDOMCallbacks;
namespace gc {
enum class AllocKind : uint8_t;
class FreeSpan;
} // namespace gc
namespace jit {
class JitRuntime;
// During Ion compilation we need access to various bits of the current
// compartment, runtime and so forth. However, since compilation can run off
// thread while the main thread is mutating the VM, this access needs
// to be restricted. The classes below give the compiler an interface to access
// all necessary information in a threadsafe fashion.
class CompileRuntime {
JSRuntime* runtime();
public:
static CompileRuntime* get(JSRuntime* rt);
#ifdef JS_GC_ZEAL
const uint32_t* addressOfGCZealModeBits();
#endif
const JitRuntime* jitRuntime();
// Compilation does not occur off thread when the Gecko Profiler is enabled.
GeckoProfilerRuntime& geckoProfiler();
bool hadOutOfMemory();
bool profilingScripts();
const JSAtomState& names();
const PropertyName* emptyString();
const StaticStrings& staticStrings();
const WellKnownSymbols& wellKnownSymbols();
const JSClass* maybeWindowProxyClass();
const void* mainContextPtr();
const void* addressOfJitStackLimit();
const void* addressOfInterruptBits();
const void* addressOfZone();
const void* addressOfMegamorphicCache();
const void* addressOfStringToAtomCache();
#ifdef DEBUG
const void* addressOfIonBailAfterCounter();
#endif
// DOM callbacks must be threadsafe (and will hopefully be removed soon).
const DOMCallbacks* DOMcallbacks();
bool runtimeMatches(JSRuntime* rt);
};
class CompileZone {
friend class MacroAssembler;
JS::Zone* zone();
public:
static CompileZone* get(JS::Zone* zone);
CompileRuntime* runtime();
bool isAtomsZone();
const uint32_t* addressOfNeedsIncrementalBarrier();
uint32_t* addressOfTenuredAllocCount();
gc::FreeSpan** addressOfFreeList(gc::AllocKind allocKind);
void* addressOfNurseryPosition();
void* addressOfStringNurseryPosition();
void* addressOfBigIntNurseryPosition();
const void* addressOfNurseryCurrentEnd();
const void* addressOfStringNurseryCurrentEnd();
const void* addressOfBigIntNurseryCurrentEnd();
uint32_t* addressOfNurseryAllocCount();
void* addressOfNurseryAllocatedSites();
bool canNurseryAllocateStrings();
bool canNurseryAllocateBigInts();
uintptr_t nurseryCellHeader(JS::TraceKind traceKind,
gc::CatchAllAllocSite siteKind);
};
class JitRealm;
class CompileRealm {
JS::Realm* realm();
public:
static CompileRealm* get(JS::Realm* realm);
CompileZone* zone();
CompileRuntime* runtime();
const void* realmPtr() { return realm(); }
const mozilla::non_crypto::XorShift128PlusRNG*
addressOfRandomNumberGenerator();
const JitRealm* jitRealm();
const GlobalObject* maybeGlobal();
const uint32_t* addressOfGlobalWriteBarriered();
bool hasAllocationMetadataBuilder();
};
class JitCompileOptions {
public:
JitCompileOptions();
explicit JitCompileOptions(JSContext* cx);
bool profilerSlowAssertionsEnabled() const {
return profilerSlowAssertionsEnabled_;
}
bool offThreadCompilationAvailable() const {
return offThreadCompilationAvailable_;
}
#ifdef DEBUG
bool ionBailAfterEnabled() const { return ionBailAfterEnabled_; }
#endif
private:
bool profilerSlowAssertionsEnabled_;
bool offThreadCompilationAvailable_;
#ifdef DEBUG
bool ionBailAfterEnabled_ = false;
#endif
};
} // namespace jit
} // namespace js
#endif // jit_CompileWrappers_h
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