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authorMichael J. Spencer <bigcheesegs@gmail.com>2010-11-29 18:16:10 +0000
committerMichael J. Spencer <bigcheesegs@gmail.com>2010-11-29 18:16:10 +0000
commit1f6efa3996dd1929fbc129203ce5009b620e6969 (patch)
tree6b782914982f90d3a983bcefef98b8ef68ab2961 /lib/Support/Valgrind.cpp
parent9363f739cdc3bd02e8516a25de0090f52ae12fbb (diff)
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Merge System into Support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support/Valgrind.cpp')
-rw-r--r--lib/Support/Valgrind.cpp54
1 files changed, 54 insertions, 0 deletions
diff --git a/lib/Support/Valgrind.cpp b/lib/Support/Valgrind.cpp
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--- /dev/null
+++ b/lib/Support/Valgrind.cpp
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+//===-- Valgrind.cpp - Implement Valgrind communication ---------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Defines Valgrind communication methods, if HAVE_VALGRIND_VALGRIND_H is
+// defined. If we have valgrind.h but valgrind isn't running, its macros are
+// no-ops.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/Valgrind.h"
+#include "llvm/Config/config.h"
+
+#if HAVE_VALGRIND_VALGRIND_H
+#include <valgrind/valgrind.h>
+
+static bool InitNotUnderValgrind() {
+ return !RUNNING_ON_VALGRIND;
+}
+
+// This bool is negated from what we'd expect because code may run before it
+// gets initialized. If that happens, it will appear to be 0 (false), and we
+// want that to cause the rest of the code in this file to run the
+// Valgrind-provided macros.
+static const bool NotUnderValgrind = InitNotUnderValgrind();
+
+bool llvm::sys::RunningOnValgrind() {
+ if (NotUnderValgrind)
+ return false;
+ return RUNNING_ON_VALGRIND;
+}
+
+void llvm::sys::ValgrindDiscardTranslations(const void *Addr, size_t Len) {
+ if (NotUnderValgrind)
+ return;
+
+ VALGRIND_DISCARD_TRANSLATIONS(Addr, Len);
+}
+
+#else // !HAVE_VALGRIND_VALGRIND_H
+
+bool llvm::sys::RunningOnValgrind() {
+ return false;
+}
+
+void llvm::sys::ValgrindDiscardTranslations(const void *Addr, size_t Len) {
+}
+
+#endif // !HAVE_VALGRIND_VALGRIND_H