| // 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/execution/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_ |