/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/lib/Support/Valgrind.cpp
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1 | | //===-- Valgrind.cpp - Implement Valgrind communication ---------*- C++ -*-===// |
2 | | // |
3 | | // The LLVM Compiler Infrastructure |
4 | | // |
5 | | // This file is distributed under the University of Illinois Open Source |
6 | | // License. See LICENSE.TXT for details. |
7 | | // |
8 | | //===----------------------------------------------------------------------===// |
9 | | // |
10 | | // Defines Valgrind communication methods, if HAVE_VALGRIND_VALGRIND_H is |
11 | | // defined. If we have valgrind.h but valgrind isn't running, its macros are |
12 | | // no-ops. |
13 | | // |
14 | | //===----------------------------------------------------------------------===// |
15 | | |
16 | | #include "llvm/Support/Valgrind.h" |
17 | | #include "llvm/Config/config.h" |
18 | | #include <cstddef> |
19 | | |
20 | | #if HAVE_VALGRIND_VALGRIND_H |
21 | | #include <valgrind/valgrind.h> |
22 | | |
23 | | static bool InitNotUnderValgrind() { |
24 | | return !RUNNING_ON_VALGRIND; |
25 | | } |
26 | | |
27 | | // This bool is negated from what we'd expect because code may run before it |
28 | | // gets initialized. If that happens, it will appear to be 0 (false), and we |
29 | | // want that to cause the rest of the code in this file to run the |
30 | | // Valgrind-provided macros. |
31 | | static const bool NotUnderValgrind = InitNotUnderValgrind(); |
32 | | |
33 | | bool llvm::sys::RunningOnValgrind() { |
34 | | if (NotUnderValgrind) |
35 | | return false; |
36 | | return RUNNING_ON_VALGRIND; |
37 | | } |
38 | | |
39 | | void llvm::sys::ValgrindDiscardTranslations(const void *Addr, size_t Len) { |
40 | | if (NotUnderValgrind) |
41 | | return; |
42 | | |
43 | | VALGRIND_DISCARD_TRANSLATIONS(Addr, Len); |
44 | | } |
45 | | |
46 | | #else // !HAVE_VALGRIND_VALGRIND_H |
47 | | |
48 | 10 | bool llvm::sys::RunningOnValgrind() { |
49 | 10 | return false; |
50 | 10 | } |
51 | | |
52 | 611 | void llvm::sys::ValgrindDiscardTranslations(const void *Addr, size_t Len) { |
53 | 611 | } |
54 | | |
55 | | #endif // !HAVE_VALGRIND_VALGRIND_H |