unittests/ADT/IntrusiveRefCntPtrTest.cpp

   1 //===- unittest/ADT/IntrusiveRefCntPtrTest.cpp ----------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/ADT/IntrusiveRefCntPtr.h"
  11 #include "gtest/gtest.h"
  12
  13 namespace {
  14 struct VirtualRefCounted : public llvm::RefCountedBaseVPTR {
  15   virtual void f() {}
  16 };
  17 }
  18
  19 namespace llvm {
  20
  21 // Run this test with valgrind to detect memory leaks.
  22 TEST(IntrusiveRefCntPtr, RefCountedBaseVPTRCopyDoesNotLeak) {
  23   VirtualRefCounted *V1 = new VirtualRefCounted;
  24   IntrusiveRefCntPtr<VirtualRefCounted> R1 = V1;
  25   VirtualRefCounted *V2 = new VirtualRefCounted(*V1);
  26   IntrusiveRefCntPtr<VirtualRefCounted> R2 = V2;
  27 }
  28
  29 struct SimpleRefCounted : public RefCountedBase<SimpleRefCounted> {};
  30
  31 // Run this test with valgrind to detect memory leaks.
  32 TEST(IntrusiveRefCntPtr, RefCountedBaseCopyDoesNotLeak) {
  33   SimpleRefCounted *S1 = new SimpleRefCounted;
  34   IntrusiveRefCntPtr<SimpleRefCounted> R1 = S1;
  35   SimpleRefCounted *S2 = new SimpleRefCounted(*S1);
  36   IntrusiveRefCntPtr<SimpleRefCounted> R2 = S2;
  37 }
  38
  39 struct InterceptRefCounted : public RefCountedBase<InterceptRefCounted> {
  40   InterceptRefCounted(bool *Released, bool *Retained)
  41     : Released(Released), Retained(Retained) {}
  42   bool * const Released;
  43   bool * const Retained;
  44 };
  45 template <> struct IntrusiveRefCntPtrInfo<InterceptRefCounted> {
  46   static void retain(InterceptRefCounted *I) {
  47     *I->Retained = true;
  48     I->Retain();
  49   }
  50   static void release(InterceptRefCounted *I) {
  51     *I->Released = true;
  52     I->Release();
  53   }
  54 };
  55 TEST(IntrusiveRefCntPtr, UsesTraitsToRetainAndRelease) {
  56   bool Released = false;
  57   bool Retained = false;
  58   {
  59     InterceptRefCounted *I = new InterceptRefCounted(&Released, &Retained);
  60     IntrusiveRefCntPtr<InterceptRefCounted> R = I;
  61   }
  62   EXPECT_TRUE(Released);
  63   EXPECT_TRUE(Retained);
  64 }
  65
  66 } // end namespace llvm