зеркало из https://github.com/mozilla/gecko-dev.git
543 строки
13 KiB
C++
543 строки
13 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsTimelineService.h"
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#include "prlong.h"
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#include "prprf.h"
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#include "prenv.h"
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#include "plhash.h"
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#include "prlock.h"
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#include "prinit.h"
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#include "prinrval.h"
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#ifdef MOZ_TIMELINE
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#define MAXINDENT 20
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#ifdef XP_MAC
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static PRIntervalTime initInterval = 0;
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#endif
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static PRTime initTime = 0;
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static PRFileDesc *timelineFD = PR_STDERR;
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static PRHashTable *timers;
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static PRLock *timerLock;
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static int indent;
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static PRBool gTimelineDisabled = PR_TRUE;
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/* Implementation file */
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NS_IMPL_ISUPPORTS1(nsTimelineService, nsITimelineService)
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static PRTime Now(void);
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/*
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* Timer structure stored in a hash table to keep track of named
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* timers.
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*/
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class nsTimelineServiceTimer {
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public:
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nsTimelineServiceTimer();
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~nsTimelineServiceTimer();
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void start();
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/*
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* Caller passes in "now" rather than having us calculate it so
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* that we can avoid including timer overhead in the time being
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* measured.
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*/
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void stop(PRTime now);
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void reset();
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PRTime getAccum();
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PRTime getAccum(PRTime now);
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private:
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PRTime mAccum;
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PRTime mStart;
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PRInt32 mRunning;
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PRLock *mLock;
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};
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nsTimelineServiceTimer::nsTimelineServiceTimer()
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: mAccum(LL_ZERO), mStart(LL_ZERO), mRunning(0), mLock(PR_NewLock())
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{
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}
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nsTimelineServiceTimer::~nsTimelineServiceTimer()
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{
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PR_DestroyLock(mLock);
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}
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void nsTimelineServiceTimer::start()
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{
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PR_Lock(mLock);
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if (!mRunning) {
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mStart = Now();
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}
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mRunning++;
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PR_Unlock(mLock);
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}
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void nsTimelineServiceTimer::stop(PRTime now)
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{
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PR_Lock(mLock);
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mRunning--;
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if (mRunning == 0) {
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PRTime delta, accum;
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LL_SUB(delta, now, mStart);
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LL_ADD(accum, mAccum, delta);
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mAccum = accum;
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}
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PR_Unlock(mLock);
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}
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void nsTimelineServiceTimer::reset()
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{
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mStart = 0;
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mAccum = 0;
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}
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PRTime nsTimelineServiceTimer::getAccum()
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{
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PRTime accum;
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PR_Lock(mLock);
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if (!mRunning) {
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accum = mAccum;
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} else {
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PRTime delta;
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LL_SUB(delta, Now(), mStart);
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LL_ADD(accum, mAccum, delta);
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}
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PR_Unlock(mLock);
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return accum;
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}
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PRTime nsTimelineServiceTimer::getAccum(PRTime now)
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{
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PRTime accum;
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PR_Lock(mLock);
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if (!mRunning) {
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accum = mAccum;
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} else {
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PRTime delta;
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LL_SUB(delta, now, mStart);
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LL_ADD(accum, mAccum, delta);
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}
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PR_Unlock(mLock);
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return accum;
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}
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#ifdef XP_MAC
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/*
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* PR_Now() on the Mac only gives us a resolution of seconds. Using
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* PR_IntervalNow() gives us better resolution. with the drawback that
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* the timeline is only good for about six hours.
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*
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* PR_IntervalNow() occasionally exhibits discontinuities on Windows,
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* so we only use it on the Mac. Bleah!
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*/
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static PRTime Now(void)
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{
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PRIntervalTime numTicks = PR_IntervalNow() - initInterval;
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PRTime now;
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LL_ADD(now, initTime, PR_IntervalToMilliseconds(numTicks) * 1000);
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return now;
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}
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#else
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static PRTime Now(void)
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{
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return PR_Now();
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}
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#endif
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static void TimelineInit(void)
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{
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char *timeStr;
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char *fileName;
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PRInt32 secs, msecs;
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PRFileDesc *fd;
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PRInt64 tmp1, tmp2;
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timeStr = PR_GetEnv("NS_TIMELINE_INIT_TIME");
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#ifdef XP_MAC
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initInterval = PR_IntervalNow();
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#endif
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if (timeStr != NULL && 2 == PR_sscanf(timeStr, "%d.%d", &secs, &msecs)) {
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LL_MUL(tmp1, (PRInt64)secs, 1000000);
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LL_MUL(tmp2, (PRInt64)msecs, 1000);
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LL_ADD(initTime, tmp1, tmp2);
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#ifdef XP_MAC
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initInterval -= PR_MicrosecondsToInterval(
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(PRUint32)(PR_Now() - initTime));
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#endif
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} else {
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initTime = PR_Now();
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}
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#ifdef XP_MAC
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fileName = "timeline.txt";
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#else
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fileName = PR_GetEnv("NS_TIMELINE_LOG_FILE");
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#endif
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if (fileName != NULL
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&& (fd = PR_Open(fileName, PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE,
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0666)) != NULL) {
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timelineFD = fd;
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PR_fprintf(fd,
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"NOTE: due to threading and asynchrony, the indentation\n"
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"that you see does not necessarily correspond to nesting\n"
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"in the code.\n\n");
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}
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// Runtime disable of timeline
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if (PR_GetEnv("NS_TIMELINE_ENABLE"))
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gTimelineDisabled = PR_FALSE;
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}
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static void ParseTime(PRTime tm, PRInt32& secs, PRInt32& msecs)
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{
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PRTime llsecs, llmsecs, tmp;
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LL_DIV(llsecs, tm, 1000000);
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LL_MOD(tmp, tm, 1000000);
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LL_DIV(llmsecs, tmp, 1000);
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LL_L2I(secs, llsecs);
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LL_L2I(msecs, llmsecs);
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}
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static char *Indent(char *buf)
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{
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int amount = indent;
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if (amount > MAXINDENT) {
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amount = MAXINDENT;
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}
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if (amount < 0) {
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amount = 0;
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indent = 0;
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PR_Write(timelineFD, "indent underflow!\n", 18);
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}
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while (amount--) {
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*buf++ = ' ';
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}
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return buf;
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}
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static void PrintTime(PRTime tm, const char *text, va_list args)
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{
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PRInt32 secs, msecs;
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char pbuf[500], *pc, tbuf[500];
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ParseTime(tm, secs, msecs);
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// snprintf/write rather than fprintf because we don't want
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// messages from multiple threads to garble one another.
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pc = Indent(pbuf);
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PR_vsnprintf(pc, sizeof pbuf - (pc - pbuf), text, args);
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PR_snprintf(tbuf, sizeof tbuf, "%05d.%03d: %s\n",
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secs, msecs, pbuf);
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PR_Write(timelineFD, tbuf, strlen(tbuf));
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}
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/*
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* Make this public if we need it.
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*/
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static nsresult NS_TimelineMarkV(const char *text, va_list args)
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{
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PRTime elapsed,tmp;
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if (LL_IS_ZERO(initTime)) {
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TimelineInit();
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}
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tmp = Now();
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LL_SUB(elapsed, tmp, initTime);
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PrintTime(elapsed, text, args);
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return NS_OK;
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}
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PR_IMPLEMENT(nsresult) NS_TimelineForceMark(const char *text, ...)
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{
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va_list args;
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va_start(args, text);
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NS_TimelineMarkV(text, args);
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return NS_OK;
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}
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PR_IMPLEMENT(nsresult) NS_TimelineMark(const char *text, ...)
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{
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va_list args;
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va_start(args, text);
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if (LL_IS_ZERO(initTime)) {
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TimelineInit();
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}
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if (gTimelineDisabled)
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return NS_ERROR_NOT_AVAILABLE;
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NS_TimelineMarkV(text, args);
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return NS_OK;
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}
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/*
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* PRCallOnceFN that initializes stuff for the timing service.
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*/
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static PRStatus InitTimers(void)
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{
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timerLock = PR_NewLock();
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if (timerLock == NULL) {
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return PR_FAILURE;
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}
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timers = PL_NewHashTable(100, PL_HashString, PL_CompareStrings,
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PL_CompareValues, NULL, NULL);
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return timers != NULL ? PR_SUCCESS : PR_FAILURE;
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}
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PR_IMPLEMENT(nsresult) NS_TimelineStartTimer(const char *timerName)
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{
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static PRCallOnceType once;
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PR_CallOnce(&once, InitTimers);
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if (timers == NULL) {
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return NS_ERROR_FAILURE;
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}
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if (gTimelineDisabled)
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return NS_ERROR_NOT_AVAILABLE;
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PR_Lock(timerLock);
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nsTimelineServiceTimer *timer
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= (nsTimelineServiceTimer *)PL_HashTableLookup(timers, timerName);
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if (timer == NULL) {
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timer = new nsTimelineServiceTimer;
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PL_HashTableAdd(timers, timerName, timer);
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}
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PR_Unlock(timerLock);
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timer->start();
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return NS_OK;
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}
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PR_IMPLEMENT(nsresult) NS_TimelineStopTimer(const char *timerName)
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{
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if (timers == NULL) {
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return NS_ERROR_FAILURE;
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}
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if (gTimelineDisabled)
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return NS_ERROR_NOT_AVAILABLE;
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/*
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* Strange-looking now/timer->stop() interaction is to avoid
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* including time spent in PR_Lock and PL_HashTableLookup in the
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* timer.
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*/
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PRTime now = Now();
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PR_Lock(timerLock);
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nsTimelineServiceTimer *timer
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= (nsTimelineServiceTimer *)PL_HashTableLookup(timers, timerName);
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PR_Unlock(timerLock);
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if (timer == NULL) {
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return NS_ERROR_FAILURE;
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}
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timer->stop(now);
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return NS_OK;
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}
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PR_IMPLEMENT(nsresult) NS_TimelineMarkTimer(const char *timerName, const char *str)
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{
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if (timers == NULL) {
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return NS_ERROR_FAILURE;
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}
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if (gTimelineDisabled)
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return NS_ERROR_NOT_AVAILABLE;
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PR_Lock(timerLock);
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nsTimelineServiceTimer *timer
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= (nsTimelineServiceTimer *)PL_HashTableLookup(timers, timerName);
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PR_Unlock(timerLock);
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if (timer == NULL) {
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return NS_ERROR_FAILURE;
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}
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PRTime accum = timer->getAccum();
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char buf[500];
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PRInt32 sec, msec;
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ParseTime(accum, sec, msec);
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if (!str)
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PR_snprintf(buf, sizeof buf, "%s total: %d.%03d",
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timerName, sec, msec);
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else
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PR_snprintf(buf, sizeof buf, "%s total: %d.%03d (%s)",
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timerName, sec, msec, str);
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NS_TimelineMark(buf);
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return NS_OK;
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}
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PR_IMPLEMENT(nsresult) NS_TimelineResetTimer(const char *timerName)
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{
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if (timers == NULL) {
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return NS_ERROR_FAILURE;
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}
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if (gTimelineDisabled)
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return NS_ERROR_NOT_AVAILABLE;
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PR_Lock(timerLock);
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nsTimelineServiceTimer *timer
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= (nsTimelineServiceTimer *)PL_HashTableLookup(timers, timerName);
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PR_Unlock(timerLock);
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if (timer == NULL) {
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return NS_ERROR_FAILURE;
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}
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timer->reset();
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return NS_OK;
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}
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PR_IMPLEMENT(nsresult) NS_TimelineIndent()
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{
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if (gTimelineDisabled)
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return NS_ERROR_NOT_AVAILABLE;
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indent++; // Could have threading issues here.
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return NS_OK;
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}
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PR_IMPLEMENT(nsresult) NS_TimelineOutdent()
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{
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if (gTimelineDisabled)
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return NS_ERROR_NOT_AVAILABLE;
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indent--; // Could have threading issues here.
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return NS_OK;
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}
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PR_IMPLEMENT(nsresult) NS_TimelineEnter(const char *text)
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{
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nsresult rv = NS_TimelineMark("%s...", text);
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if (NS_FAILED(rv)) {
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return rv;
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}
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return NS_TimelineIndent();
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}
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PR_IMPLEMENT(nsresult) NS_TimelineLeave(const char *text)
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{
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nsresult rv = NS_TimelineOutdent();
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if (NS_FAILED(rv)) {
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return rv;
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}
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return NS_TimelineMark("...%s", text);
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}
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nsTimelineService::nsTimelineService()
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{
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NS_INIT_ISUPPORTS();
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/* member initializers and constructor code */
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}
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nsTimelineService::~nsTimelineService()
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{
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/* destructor code */
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}
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/* void mark (in string text); */
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NS_IMETHODIMP nsTimelineService::Mark(const char *text)
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{
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return NS_TimelineMark(text);
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}
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/* void startTimer (in string timerName); */
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NS_IMETHODIMP nsTimelineService::StartTimer(const char *timerName)
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{
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return NS_TimelineStartTimer(timerName);
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}
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/* void stopTimer (in string timerName); */
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NS_IMETHODIMP nsTimelineService::StopTimer(const char *timerName)
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{
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return NS_TimelineStopTimer(timerName);
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}
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/* void markTimer (in string timerName, in string text); */
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NS_IMETHODIMP nsTimelineService::MarkTimer(const char *timerName)
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{
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return NS_TimelineMarkTimer(timerName);
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}
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/* void resetTimer (in string timerName); */
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NS_IMETHODIMP nsTimelineService::ResetTimer(const char *timerName)
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{
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return NS_TimelineResetTimer(timerName);
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}
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/* void indent (); */
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NS_IMETHODIMP nsTimelineService::Indent()
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{
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return NS_TimelineIndent();
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}
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/* void outdent (); */
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NS_IMETHODIMP nsTimelineService::Outdent()
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{
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return NS_TimelineOutdent();
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}
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/* void enter (in string text); */
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NS_IMETHODIMP nsTimelineService::Enter(const char *text)
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{
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return NS_TimelineEnter(text);
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}
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/* void leave (in string text); */
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NS_IMETHODIMP nsTimelineService::Leave(const char *text)
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{
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return NS_TimelineLeave(text);
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}
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#endif /* MOZ_TIMELINE */
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