js/src/jit/ICStubSpace.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: set ts=8 sts=2 et sw=2 tw=80:
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef jit_ICStubSpace_h
   8 #define jit_ICStubSpace_h
   9
  10 #include "ds/LifoAlloc.h"
  11
  12 namespace js {
  13 namespace jit {
  14
  15 // ICStubSpace is an abstraction for allocation policy and storage for CacheIR
  16 // stub data. Each JitZone has a single ICStubSpace.
  17 class ICStubSpace {
  18   static constexpr size_t DefaultChunkSize = 4096;
  19   LifoAlloc allocator_{DefaultChunkSize};
  20
  21  public:
  22   inline void* alloc(size_t size) { return allocator_.alloc(size); }
  23
  24   JS_DECLARE_NEW_METHODS(allocate, alloc, inline)
  25
  26   void freeAllAfterMinorGC(JS::Zone* zone);
  27
  28   void transferFrom(ICStubSpace& other) {
  29     allocator_.transferFrom(&other.allocator_);
  30   }
  31
  32   size_t sizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf) const {
  33     return allocator_.sizeOfExcludingThis(mallocSizeOf);
  34   }
  35 };
  36
  37 }  // namespace jit
  38 }  // namespace js
  39
  40 #endif /* jit_ICStubSpace_h */