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 llvm {
  14
  15 struct VirtualRefCounted : public RefCountedBaseVPTR {
  16   virtual void f() {}
  17 };
  18
  19 // Run this test with valgrind to detect memory leaks.
  20 TEST(IntrusiveRefCntPtr, RefCountedBaseVPTRCopyDoesNotLeak) {
  21   VirtualRefCounted *V1 = new VirtualRefCounted;
  22   IntrusiveRefCntPtr<VirtualRefCounted> R1 = V1;
  23   VirtualRefCounted *V2 = new VirtualRefCounted(*V1);
  24   IntrusiveRefCntPtr<VirtualRefCounted> R2 = V2;
  25 }
  26
  27 struct SimpleRefCounted : public RefCountedBase<SimpleRefCounted> {};
  28
  29 // Run this test with valgrind to detect memory leaks.
  30 TEST(IntrusiveRefCntPtr, RefCountedBaseCopyDoesNotLeak) {
  31   SimpleRefCounted *S1 = new SimpleRefCounted;
  32   IntrusiveRefCntPtr<SimpleRefCounted> R1 = S1;
  33   SimpleRefCounted *S2 = new SimpleRefCounted(*S1);
  34   IntrusiveRefCntPtr<SimpleRefCounted> R2 = S2;
  35 }
  36
  37 struct InterceptRefCounted : public RefCountedBase<InterceptRefCounted> {
  38   InterceptRefCounted(bool *Released, bool *Retained)
  39     : Released(Released), Retained(Retained) {}
  40   bool * const Released;
  41   bool * const Retained;
  42 };
  43 template <> struct IntrusiveRefCntPtrInfo<InterceptRefCounted> {
  44   static void retain(InterceptRefCounted *I) {
  45     *I->Retained = true;
  46     I->Retain();
  47   }
  48   static void release(InterceptRefCounted *I) {
  49     *I->Released = true;
  50     I->Release();
  51   }
  52 };
  53 TEST(IntrusiveRefCntPtr, UsesTraitsToRetainAndRelease) {
  54   bool Released = false;
  55   bool Retained = false;
  56   {
  57     InterceptRefCounted *I = new InterceptRefCounted(&Released, &Retained);
  58     IntrusiveRefCntPtr<InterceptRefCounted> R = I;
  59   }
  60   EXPECT_TRUE(Released);
  61   EXPECT_TRUE(Retained);
  62 }
  63
  64 } // end namespace llvm