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author | Brigid Smith <brigidsmith@google.com> | 2014-07-21 15:38:06 -0700 |
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committer | Brigid Smith <brigidsmith@google.com> | 2014-07-28 19:38:08 -0700 |
commit | a406ee6d5f616192e9a13afad6ac6a9969814fc1 (patch) | |
tree | bc9d1575ddacb246d49109367b6151732fbfe19e /libc/private | |
parent | 337c0cefdc4667143a1f4f2c30113b452c5d188f (diff) | |
download | bionic-a406ee6d5f616192e9a13afad6ac6a9969814fc1.zip bionic-a406ee6d5f616192e9a13afad6ac6a9969814fc1.tar.gz bionic-a406ee6d5f616192e9a13afad6ac6a9969814fc1.tar.bz2 |
Added a bionic systrace class and tracing to pthread_mutex.cpp.
bionic_systrace.h contains an implementation of tracing that
can be used with systrace.py and its associated viewer. pthread_mutex
now uses this tracing to track pthread_mutex contention, which can be
enabled by using the "bionic" command line option to systrace.
Bug: 15116468
Change-Id: I30ed5b377c91ca4c36568a0e647ddf95d4e4a61a
Diffstat (limited to 'libc/private')
-rw-r--r-- | libc/private/bionic_systrace.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/libc/private/bionic_systrace.h b/libc/private/bionic_systrace.h new file mode 100644 index 0000000..ad9ff7f --- /dev/null +++ b/libc/private/bionic_systrace.h @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2014 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef BIONIC_SYSTRACE_H +#define BIONIC_SYSTRACE_H + +#include "bionic_macros.h" + +// Tracing class for bionic. To begin a trace at a specified point: +// ScopedTrace("Trace message"); +// The trace will end when the contructor goes out of scope. + +class ScopedTrace { + public: + explicit ScopedTrace(const char* message); + ~ScopedTrace(); + + private: + DISALLOW_COPY_AND_ASSIGN(ScopedTrace); +}; + +#endif |