lld/Common/Memory.cpp

   1 //===- Memory.cpp ---------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "lld/Common/Memory.h"
  10 #include "lld/Common/CommonLinkerContext.h"
  11
  12 using namespace llvm;
  13 using namespace lld;
  14
  15 SpecificAllocBase *
  16 lld::SpecificAllocBase::getOrCreate(void *tag, size_t size, size_t align,
  17                                     SpecificAllocBase *(&creator)(void *)) {
  18   auto &instances = context().instances;
  19   auto &instance = instances[tag];
  20   if (instance == nullptr) {
  21     void *storage = context().bAlloc.Allocate(size, align);
  22     instance = creator(storage);
  23   }
  24   return instance;
  25 }