1*0b57cec5SDimitry Andric //===-- Valgrind.cpp - Implement Valgrind communication ---------*- C++ -*-===// 2*0b57cec5SDimitry Andric // 3*0b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*0b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*0b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*0b57cec5SDimitry Andric // 7*0b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 8*0b57cec5SDimitry Andric // 9*0b57cec5SDimitry Andric // Defines Valgrind communication methods, if HAVE_VALGRIND_VALGRIND_H is 10*0b57cec5SDimitry Andric // defined. If we have valgrind.h but valgrind isn't running, its macros are 11*0b57cec5SDimitry Andric // no-ops. 12*0b57cec5SDimitry Andric // 13*0b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 14*0b57cec5SDimitry Andric 15*0b57cec5SDimitry Andric #include "llvm/Support/Valgrind.h" 16*0b57cec5SDimitry Andric #include "llvm/Config/config.h" 17*0b57cec5SDimitry Andric #include <cstddef> 18*0b57cec5SDimitry Andric 19*0b57cec5SDimitry Andric #if HAVE_VALGRIND_VALGRIND_H 20*0b57cec5SDimitry Andric #include <valgrind/valgrind.h> 21*0b57cec5SDimitry Andric 22*0b57cec5SDimitry Andric static bool InitNotUnderValgrind() { 23*0b57cec5SDimitry Andric return !RUNNING_ON_VALGRIND; 24*0b57cec5SDimitry Andric } 25*0b57cec5SDimitry Andric 26*0b57cec5SDimitry Andric // This bool is negated from what we'd expect because code may run before it 27*0b57cec5SDimitry Andric // gets initialized. If that happens, it will appear to be 0 (false), and we 28*0b57cec5SDimitry Andric // want that to cause the rest of the code in this file to run the 29*0b57cec5SDimitry Andric // Valgrind-provided macros. 30*0b57cec5SDimitry Andric static const bool NotUnderValgrind = InitNotUnderValgrind(); 31*0b57cec5SDimitry Andric 32*0b57cec5SDimitry Andric bool llvm::sys::RunningOnValgrind() { 33*0b57cec5SDimitry Andric if (NotUnderValgrind) 34*0b57cec5SDimitry Andric return false; 35*0b57cec5SDimitry Andric return RUNNING_ON_VALGRIND; 36*0b57cec5SDimitry Andric } 37*0b57cec5SDimitry Andric 38*0b57cec5SDimitry Andric void llvm::sys::ValgrindDiscardTranslations(const void *Addr, size_t Len) { 39*0b57cec5SDimitry Andric if (NotUnderValgrind) 40*0b57cec5SDimitry Andric return; 41*0b57cec5SDimitry Andric 42*0b57cec5SDimitry Andric VALGRIND_DISCARD_TRANSLATIONS(Addr, Len); 43*0b57cec5SDimitry Andric } 44*0b57cec5SDimitry Andric 45*0b57cec5SDimitry Andric #else // !HAVE_VALGRIND_VALGRIND_H 46*0b57cec5SDimitry Andric 47*0b57cec5SDimitry Andric bool llvm::sys::RunningOnValgrind() { 48*0b57cec5SDimitry Andric return false; 49*0b57cec5SDimitry Andric } 50*0b57cec5SDimitry Andric 51*0b57cec5SDimitry Andric void llvm::sys::ValgrindDiscardTranslations(const void *Addr, size_t Len) { 52*0b57cec5SDimitry Andric } 53*0b57cec5SDimitry Andric 54*0b57cec5SDimitry Andric #endif // !HAVE_VALGRIND_VALGRIND_H 55