mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
31 lines
1.1 KiB
C++
31 lines
1.1 KiB
C++
//===- BuryPointer.cpp - Memory Manipulation/Leak ---------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#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)
|
|
return;
|
|
GraveYard[Idx] = Ptr;
|
|
}
|
|
|
|
} // namespace llvm
|