1 | // Copyright 2018 the V8 project authors. All rights reserved. |
---|---|
2 | // Use of this source code is governed by a BSD-style license that can be |
3 | // found in the LICENSE file. |
4 | |
5 | #ifndef V8_COMPILER_PER_ISOLATE_COMPILER_CACHE_H_ |
6 | #define V8_COMPILER_PER_ISOLATE_COMPILER_CACHE_H_ |
7 | |
8 | #include "src/compiler/refs-map.h" |
9 | #include "src/isolate.h" |
10 | #include "src/zone/zone-containers.h" |
11 | |
12 | namespace v8 { |
13 | namespace internal { |
14 | |
15 | class Isolate; |
16 | class Zone; |
17 | |
18 | namespace compiler { |
19 | |
20 | class ObjectData; |
21 | |
22 | // This class serves as a per-isolate container of data that should be |
23 | // persisted between compiler runs. For now it stores the code builtins |
24 | // so they are not serialized on each compiler run. |
25 | class PerIsolateCompilerCache : public ZoneObject { |
26 | public: |
27 | explicit PerIsolateCompilerCache(Zone* zone) |
28 | : zone_(zone), refs_snapshot_(nullptr) {} |
29 | |
30 | RefsMap* GetSnapshot() { return refs_snapshot_; } |
31 | void SetSnapshot(RefsMap* refs) { |
32 | DCHECK_NULL(refs_snapshot_); |
33 | DCHECK(!refs->IsEmpty()); |
34 | refs_snapshot_ = new (zone_) RefsMap(refs, zone_); |
35 | } |
36 | |
37 | bool HasSnapshot() const { return refs_snapshot_; } |
38 | |
39 | Zone* zone() const { return zone_; } |
40 | |
41 | static void Setup(Isolate* isolate) { |
42 | if (isolate->compiler_cache()) return; |
43 | |
44 | // The following zone is supposed to contain compiler-related objects |
45 | // that should live through all compilations, as opposed to the |
46 | // broker_zone which holds per-compilation data. It's not meant for |
47 | // per-compilation or heap broker data. |
48 | Zone* compiler_zone = new Zone(isolate->allocator(), "Compiler zone"); |
49 | PerIsolateCompilerCache* compiler_cache = |
50 | new (compiler_zone) PerIsolateCompilerCache(compiler_zone); |
51 | isolate->set_compiler_utils(compiler_cache, compiler_zone); |
52 | } |
53 | |
54 | private: |
55 | Zone* const zone_; |
56 | |
57 | RefsMap* refs_snapshot_; |
58 | }; |
59 | |
60 | } // namespace compiler |
61 | } // namespace internal |
62 | } // namespace v8 |
63 | |
64 | #endif // V8_COMPILER_PER_ISOLATE_COMPILER_CACHE_H_ |
65 |