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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_WarpOracle_h
#define jit_WarpOracle_h
#include "jit/JitAllocPolicy.h"
#include "jit/JitContext.h"
#include "jit/WarpSnapshot.h"
namespace js {
namespace jit {
class MIRGenerator;
// WarpOracle creates a WarpSnapshot data structure that's used by WarpBuilder
// to generate the MIR graph off-thread.
class MOZ_STACK_CLASS WarpOracle {
JSContext* cx_;
MIRGenerator& mirGen_;
TempAllocator& alloc_;
HandleScript outerScript_;
WarpBailoutInfo bailoutInfo_;
WarpScriptSnapshotList scriptSnapshots_;
size_t accumulatedBytecodeSize_ = 0;
#ifdef DEBUG
mozilla::HashNumber runningScriptHash_ = 0;
#endif
// List of nursery objects to copy to the snapshot. See WarpObjectField.
// The HashMap is used to de-duplicate the Vector. It maps each object to the
// corresponding nursery index (index into the Vector).
// Note: this stores raw object pointers because WarpOracle can't GC.
Vector<JSObject*, 8, SystemAllocPolicy> nurseryObjects_;
using NurseryObjectsMap =
HashMap<JSObject*, uint32_t, DefaultHasher<JSObject*>, SystemAllocPolicy>;
NurseryObjectsMap nurseryObjectsMap_;
public:
WarpOracle(JSContext* cx, MIRGenerator& mirGen, HandleScript outerScript);
~WarpOracle() { scriptSnapshots_.clear(); }
MIRGenerator& mirGen() { return mirGen_; }
WarpBailoutInfo& bailoutInfo() { return bailoutInfo_; }
[[nodiscard]] bool registerNurseryObject(JSObject* obj,
uint32_t* nurseryIndex);
AbortReasonOr<WarpSnapshot*> createSnapshot();
mozilla::GenericErrorResult<AbortReason> abort(HandleScript script,
AbortReason r);
mozilla::GenericErrorResult<AbortReason> abort(HandleScript script,
AbortReason r,
const char* message, ...);
void addScriptSnapshot(WarpScriptSnapshot* scriptSnapshot, ICScript* icScript,
size_t bytecodeLength);
size_t accumulatedBytecodeSize() { return accumulatedBytecodeSize_; }
};
} // namespace jit
} // namespace js
#endif /* jit_WarpOracle_h */
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