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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
#ifndef vm_RuntimeFuses_h
#define vm_RuntimeFuses_h
#include <stdint.h>
#include "vm/InvalidatingFuse.h"
struct JS_PUBLIC_API JSContext;
namespace js {
class HasSeenObjectEmulateUndefinedFuse final : public InvalidatingRuntimeFuse {
const char* name() override { return "HasSeenObjectEmulateUndefinedFuse"; }
bool checkInvariant(JSContext* cx) override {
// Without traversing the GC heap I don't think it's possible to assert
// this invariant directly.
return true;
}
public:
void popFuse(JSContext* cx) override;
};
class HasSeenArrayExceedsInt32LengthFuse final
: public InvalidatingRuntimeFuse {
const char* name() override { return "HasSeenArrayExceedsInt32LengthFuse"; }
bool checkInvariant(JSContext* cx) override { return true; }
public:
void popFuse(JSContext* cx) override;
};
#define FOR_EACH_RUNTIME_FUSE(FUSE) \
FUSE(HasSeenObjectEmulateUndefinedFuse, hasSeenObjectEmulateUndefinedFuse) \
FUSE(HasSeenArrayExceedsInt32LengthFuse, hasSeenArrayExceedsInt32LengthFuse)
struct RuntimeFuses {
RuntimeFuses() = default;
#define FUSE(Name, LowerName) Name LowerName{};
FOR_EACH_RUNTIME_FUSE(FUSE)
#undef FUSE
void assertInvariants(JSContext* cx) {
// Generate the invariant checking calls.
#define FUSE(Name, LowerName) LowerName.assertInvariant(cx);
FOR_EACH_RUNTIME_FUSE(FUSE)
#undef FUSE
}
// Code Generation Code:
enum class FuseIndex : uint8_t {
// Generate Fuse Indexes
#define FUSE(Name, LowerName) Name,
FOR_EACH_RUNTIME_FUSE(FUSE)
#undef FUSE
LastFuseIndex
};
GuardFuse* getFuseByIndex(FuseIndex index) {
switch (index) {
// Return fuses.
#define FUSE(Name, LowerName) \
case FuseIndex::Name: \
return &this->LowerName;
FOR_EACH_RUNTIME_FUSE(FUSE)
#undef FUSE
case FuseIndex::LastFuseIndex:
break;
}
MOZ_CRASH("Fuse Not Found");
}
static int32_t fuseOffsets[];
static const char* fuseNames[];
static int32_t offsetOfFuseWordRelativeToRuntime(FuseIndex index);
static const char* getFuseName(FuseIndex index);
#ifdef DEBUG
static bool isInvalidatingFuse(FuseIndex index) {
switch (index) {
# define FUSE(Name, LowerName) \
case FuseIndex::Name: \
static_assert(std::is_base_of_v<InvalidatingRuntimeFuse, Name>); \
return true;
FOR_EACH_RUNTIME_FUSE(FUSE)
# undef FUSE
case FuseIndex::LastFuseIndex:
break;
}
MOZ_CRASH("Fuse Not Found");
}
#endif
};
} // namespace js
#endif