From 10fdd5a0f622bdea4003ffa818eeb9486bfb0730 Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Mon, 4 Apr 2011 00:57:03 +0000 Subject: [PATCH] IntrusiveRefCntPtr: in RefCountedBase and RefCountedBaseVPTR, make ref_cnt mutable and Retain/Release const to enable reference counted pointers to const objects git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128804 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/ADT/IntrusiveRefCntPtr.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/include/llvm/ADT/IntrusiveRefCntPtr.h b/include/llvm/ADT/IntrusiveRefCntPtr.h index 592e42f7adc..2f6fd2bd559 100644 --- a/include/llvm/ADT/IntrusiveRefCntPtr.h +++ b/include/llvm/ADT/IntrusiveRefCntPtr.h @@ -42,15 +42,15 @@ namespace llvm { //===----------------------------------------------------------------------===// template class RefCountedBase { - unsigned ref_cnt; + mutable unsigned ref_cnt; public: RefCountedBase() : ref_cnt(0) {} - void Retain() { ++ref_cnt; } - void Release() { + void Retain() const { ++ref_cnt; } + void Release() const { assert (ref_cnt > 0 && "Reference count is already zero."); - if (--ref_cnt == 0) delete static_cast(this); + if (--ref_cnt == 0) delete static_cast(this); } }; @@ -63,14 +63,14 @@ namespace llvm { /// attempting to do this will produce a compile error. //===----------------------------------------------------------------------===// class RefCountedBaseVPTR { - unsigned ref_cnt; + mutable unsigned ref_cnt; protected: RefCountedBaseVPTR() : ref_cnt(0) {} virtual ~RefCountedBaseVPTR() {} - void Retain() { ++ref_cnt; } - void Release() { + void Retain() const { ++ref_cnt; } + void Release() const { assert (ref_cnt > 0 && "Reference count is already zero."); if (--ref_cnt == 0) delete this; }