LLVM
15.0.0git
lib
Support
BuryPointer.cpp
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//===- BuryPointer.cpp - Memory Manipulation/Leak ---------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "
llvm/Support/BuryPointer.h
"
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#include "
llvm/Support/Compiler.h
"
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#include <atomic>
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namespace
llvm
{
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void
BuryPointer
(
const
void
*Ptr) {
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// This function may be called only a small fixed amount of times per each
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// invocation, otherwise we do actually have a leak which we want to report.
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// If this function is called more than kGraveYardMaxSize times, the pointers
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// will not be properly buried and a leak detector will report a leak, which
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// is what we want in such case.
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static
const
size_t
kGraveYardMaxSize = 16;
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LLVM_ATTRIBUTE_USED
static
const
void
*GraveYard[kGraveYardMaxSize];
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static
std::atomic<unsigned> GraveYardSize;
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unsigned
Idx = GraveYardSize++;
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if
(Idx >= kGraveYardMaxSize)
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return
;
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GraveYard[Idx] = Ptr;
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}
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}
// namespace llvm
LLVM_ATTRIBUTE_USED
#define LLVM_ATTRIBUTE_USED
Definition:
Compiler.h:138
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition:
AddressRanges.h:17
Compiler.h
llvm::BuryPointer
void BuryPointer(const void *Ptr)
Definition:
BuryPointer.cpp:15
BuryPointer.h
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