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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
//===-- Valgrind.cpp - Implement Valgrind communication ---------*- 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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//
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// Defines Valgrind communication methods, if HAVE_VALGRIND_VALGRIND_H is
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// defined. If we have valgrind.h but valgrind isn't running, its macros are
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// no-ops.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Valgrind.h"
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#include "llvm/Config/config.h"
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#include <cstddef>
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#if HAVE_VALGRIND_VALGRIND_H
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#include <valgrind/valgrind.h>
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static bool InitNotUnderValgrind() {
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return !RUNNING_ON_VALGRIND;
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}
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// This bool is negated from what we'd expect because code may run before it
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// gets initialized. If that happens, it will appear to be 0 (false), and we
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// want that to cause the rest of the code in this file to run the
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// Valgrind-provided macros.
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static const bool NotUnderValgrind = InitNotUnderValgrind();
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bool llvm::sys::RunningOnValgrind() {
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if (NotUnderValgrind)
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return false;
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return RUNNING_ON_VALGRIND;
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}
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void llvm::sys::ValgrindDiscardTranslations(const void *Addr, size_t Len) {
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if (NotUnderValgrind)
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return;
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VALGRIND_DISCARD_TRANSLATIONS(Addr, Len);
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}
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#else // !HAVE_VALGRIND_VALGRIND_H
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bool llvm::sys::RunningOnValgrind() {
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return false;
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}
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void llvm::sys::ValgrindDiscardTranslations(const void *Addr, size_t Len) {
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}
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#endif // !HAVE_VALGRIND_VALGRIND_H
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