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//===- BuryPointer.cpp - Memory Manipulation/Leak ---------------*- C++ -*-===//
// The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
#include "llvm/Support/BuryPointer.h"
#include "llvm/Support/Compiler.h"
#include <atomic>
namespace llvm {
void BuryPointer(const void *Ptr) {
// This function may be called only a small fixed amount of times per each
// invocation, otherwise we do actually have a leak which we want to report.
// If this function is called more than kGraveYardMaxSize times, the pointers
// will not be properly buried and a leak detector will report a leak, which
// is what we want in such case.
static const size_t kGraveYardMaxSize = 16;
LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
static std::atomic<unsigned> GraveYardSize;
unsigned Idx = GraveYardSize++;
if (Idx >= kGraveYardMaxSize)
GraveYard[Idx] = Ptr;