mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-04 19:33:18 +00:00
113 lines
4.3 KiB
C
113 lines
4.3 KiB
C
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (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.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Mozilla Foundation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2011
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Benoit Girard <bgirard@mozilla.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/* *************** SPS Sampler Information ****************
|
|
*
|
|
* SPS is an always on profiler that takes fast and low overheads samples
|
|
* of the program execution using only userspace functionity for portability.
|
|
* The goal of this module is to provide performance data in a generic
|
|
* cross platform way without requiring custom tools or kernel support.
|
|
*
|
|
* Non goals: Support features that are platform specific or replace
|
|
* platform specific profilers.
|
|
*
|
|
* Samples are collected to form a timeline with optional timeline event (markers)
|
|
* used for filtering.
|
|
*
|
|
* SPS collects samples in a platform independant way by using a speudo stack abstraction
|
|
* of the real program stack by using 'sample stack frames'. When a sample is collected
|
|
* all active sample stack frames and the program counter are recorded.
|
|
*/
|
|
|
|
/* *************** SPS Sampler File Format ****************
|
|
*
|
|
* Simple new line seperated tag format:
|
|
* S -> BOF tags EOF
|
|
* tags -> tag tags
|
|
* tag -> CHAR - STRING
|
|
*
|
|
* Tags:
|
|
* 's' - Sample tag followed by the first stack frame followed by 0 or more 'c' tags.
|
|
* 'c' - Continue Sample tag gives remaining tag element. If a 'c' tag is seen without
|
|
* a preceding 's' tag it should be ignored. This is to support the behavior
|
|
* of circular buffers.
|
|
* 'm' - Timeline marker. Zero or more may appear before a 's' tag.
|
|
* 'l' - Information about the program counter library and address. Post processing
|
|
* can include function and source line. If built with leaf data enabled
|
|
* this tag will describe the last 'c' tag.
|
|
*
|
|
* NOTE: File format is planned to be extended to include a dictionary to reduce size.
|
|
*/
|
|
|
|
#ifndef SAMPLER_H
|
|
#define SAMPLER_H
|
|
|
|
#if defined(_MSC_VER)
|
|
#define FULLFUNCTION __FUNCSIG__
|
|
#elif (__GNUC__ >= 4)
|
|
#define FULLFUNCTION __PRETTY_FUNCTION__
|
|
#else
|
|
#define FULLFUNCTION __FUNCTION__
|
|
#endif
|
|
|
|
// Redefine the macros for platforms where SPS is supported.
|
|
#if defined(ANDROID) || defined(XP_LINUX) || defined(XP_MACOSX) || defined(XP_WIN)
|
|
|
|
#include "sps_sampler.h"
|
|
|
|
#else
|
|
|
|
// Initialize the sampler. Any other calls will be silently discarded
|
|
// before the sampler has been initialized (i.e. early start-up code)
|
|
#define SAMPLER_INIT()
|
|
#define SAMPLER_DEINIT()
|
|
#define SAMPLER_START(entries, interval)
|
|
#define SAMPLER_STOP()
|
|
#define SAMPLER_IS_ACTIVE() false
|
|
#define SAMPLER_SAVE()
|
|
// Returned string must be free'ed
|
|
#define SAMPLER_GET_PROFILE() NULL
|
|
#define SAMPLER_RESPONSIVENESS(time) NULL
|
|
#define SAMPLER_GET_RESPONSIVENESS() NULL
|
|
#define SAMPLE_LABEL(name_space, info)
|
|
#define SAMPLE_MARKER(info)
|
|
|
|
#endif
|
|
|
|
#endif // ifndef SAMPLER_H
|