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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_COMPILER_PER_ISOLATE_COMPILER_CACHE_H_
#define V8_COMPILER_PER_ISOLATE_COMPILER_CACHE_H_
#include "src/compiler/refs-map.h"
#include "src/isolate.h"
#include "src/zone/zone-containers.h"
namespace v8 {
namespace internal {
class Isolate;
class Zone;
namespace compiler {
class ObjectData;
// This class serves as a per-isolate container of data that should be
// persisted between compiler runs. For now it stores the code builtins
// so they are not serialized on each compiler run.
class PerIsolateCompilerCache : public ZoneObject {
public:
explicit PerIsolateCompilerCache(Zone* zone)
: zone_(zone), refs_snapshot_(nullptr) {}
RefsMap* GetSnapshot() { return refs_snapshot_; }
void SetSnapshot(RefsMap* refs) {
DCHECK_NULL(refs_snapshot_);
DCHECK(!refs->IsEmpty());
refs_snapshot_ = new (zone_) RefsMap(refs, zone_);
}
bool HasSnapshot() const { return refs_snapshot_; }
Zone* zone() const { return zone_; }
static void Setup(Isolate* isolate) {
if (isolate->compiler_cache()) return;
// The following zone is supposed to contain compiler-related objects
// that should live through all compilations, as opposed to the
// broker_zone which holds per-compilation data. It's not meant for
// per-compilation or heap broker data.
Zone* compiler_zone = new Zone(isolate->allocator(), "Compiler zone");
PerIsolateCompilerCache* compiler_cache =
new (compiler_zone) PerIsolateCompilerCache(compiler_zone);
isolate->set_compiler_utils(compiler_cache, compiler_zone);
}
private:
Zone* const zone_;
RefsMap* refs_snapshot_;
};
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_COMPILER_PER_ISOLATE_COMPILER_CACHE_H_
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