зеркало из https://github.com/mozilla/pjs.git
215 строки
5.9 KiB
C
215 строки
5.9 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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* File: priotest.c
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* Purpose: testing priorities
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*/
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#ifdef XP_MAC
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#error "This test does not run on Macintosh"
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#else
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#include "prcmon.h"
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#include "prinit.h"
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#include "prinrval.h"
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#include "prlock.h"
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#include "prlog.h"
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#include "prmon.h"
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#include "prprf.h"
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#include "prthread.h"
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#include "prtypes.h"
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#include "plerror.h"
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#include "plgetopt.h"
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#include <stdio.h>
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#include <stdlib.h>
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#define DEFAULT_DURATION 20
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static PRBool failed = PR_FALSE;
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static PRIntervalTime oneSecond;
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static PRFileDesc *debug_out = NULL;
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static PRBool debug_mode = PR_FALSE;
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static PRUint32 PerSecond(PRIntervalTime timein)
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{
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PRUint32 loop = 0;
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while (((PRIntervalTime)(PR_IntervalNow()) - timein) < oneSecond)
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loop += 1;
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return loop;
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} /* PerSecond */
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static void PR_CALLBACK Low(void *arg)
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{
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PRUint32 t3 = 0, t2 = 0, t1 = 0, t0, *tn = (PRUint32*)arg;
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while (1)
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{
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t0 = PerSecond(PR_IntervalNow());
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*tn = (t3 + 3 * t2 + 3 * t1 + t0) / 8;
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t3 = t2; t2 = t1; t1 = t0;
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}
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} /* Low */
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static void PR_CALLBACK High(void *arg)
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{
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PRUint32 t3 = 0, t2 = 0, t1 = 0, t0, *tn = (PRUint32*)arg;
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while (1)
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{
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PRIntervalTime timein = PR_IntervalNow();
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PR_Sleep(oneSecond >> 2); /* 0.25 seconds */
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t0 = PerSecond(timein);
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*tn = (t3 + 3 * t2 + 3 * t1 + t0) / 8;
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t3 = t2; t2 = t1; t1 = t0;
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}
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} /* High */
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static void Help(void)
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{
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PR_fprintf(
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debug_out, "Usage: priotest [-d] [-c n]\n");
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PR_fprintf(
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debug_out, "-c n\tduration of test in seconds (default: %d)\n", DEFAULT_DURATION);
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PR_fprintf(
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debug_out, "-d\tturn on debugging output (default: FALSE)\n");
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} /* Help */
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static void RudimentaryTests(void)
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{
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/*
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** Try some rudimentary tests like setting valid priority and
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** getting it back, or setting invalid priorities and getting
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** back a valid answer.
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*/
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PRThreadPriority priority;
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PR_SetThreadPriority(PR_GetCurrentThread(), PR_PRIORITY_URGENT);
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priority = PR_GetThreadPriority(PR_GetCurrentThread());
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failed = ((PR_TRUE == failed) || (PR_PRIORITY_URGENT != priority))
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? PR_TRUE : PR_FALSE;
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if (debug_mode && (PR_PRIORITY_URGENT != priority))
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{
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PR_fprintf(debug_out, "PR_[S/G]etThreadPriority() failed\n");
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}
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PR_SetThreadPriority(
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PR_GetCurrentThread(), (PRThreadPriority)(PR_PRIORITY_FIRST - 1));
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priority = PR_GetThreadPriority(PR_GetCurrentThread());
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failed = ((PR_TRUE == failed) || (PR_PRIORITY_FIRST != priority))
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? PR_TRUE : PR_FALSE;
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if (debug_mode && (PR_PRIORITY_FIRST != priority))
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{
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PR_fprintf(debug_out, "PR_SetThreadPriority(-1) failed\n");
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}
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PR_SetThreadPriority(
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PR_GetCurrentThread(), (PRThreadPriority)(PR_PRIORITY_LAST + 1));
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priority = PR_GetThreadPriority(PR_GetCurrentThread());
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failed = ((PR_TRUE == failed) || (PR_PRIORITY_LAST != priority))
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? PR_TRUE : PR_FALSE;
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if (debug_mode && (PR_PRIORITY_LAST != priority))
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{
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PR_fprintf(debug_out, "PR_SetThreadPriority(+1) failed\n");
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}
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} /* RudimentataryTests */
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static void CreateThreads(PRInt32 *lowCount, PRInt32 *highCount)
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{
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(void)PR_CreateThread(
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PR_USER_THREAD, Low, lowCount, PR_PRIORITY_LOW,
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PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0);
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(void)PR_CreateThread(
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PR_USER_THREAD, High, highCount, PR_PRIORITY_HIGH,
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PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0);
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} /* CreateThreads */
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PRIntn main(PRIntn argc, char **argv)
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{
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PLOptStatus os;
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PRIntn duration = DEFAULT_DURATION;
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PRUint32 totalCount, highCount = 0, lowCount = 0;
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PLOptState *opt = PL_CreateOptState(argc, argv, "hdc:");
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debug_out = PR_STDOUT;
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oneSecond = PR_SecondsToInterval(1);
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while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
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{
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if (PL_OPT_BAD == os) continue;
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switch (opt->option)
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{
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case 'd': /* debug mode */
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debug_mode = PR_TRUE;
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break;
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case 'c': /* test duration */
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duration = atoi(opt->value);
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break;
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case 'h': /* help message */
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default:
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Help();
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return 2;
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}
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}
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PL_DestroyOptState(opt);
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PR_STDIO_INIT();
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if (duration == 0) duration = DEFAULT_DURATION;
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RudimentaryTests();
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printf("Priority test: running for %d seconds\n\n", duration);
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(void)PerSecond(PR_IntervalNow());
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totalCount = PerSecond(PR_IntervalNow());
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PR_SetThreadPriority(PR_GetCurrentThread(), PR_PRIORITY_URGENT);
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if (debug_mode)
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{
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PR_fprintf(debug_out,
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"The high priority thread should get approximately three\n");
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PR_fprintf( debug_out,
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"times what the low priority thread manages. A maximum of \n");
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PR_fprintf( debug_out, "%d cycles are available.\n\n", totalCount);
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}
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duration = (duration + 4) / 5;
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CreateThreads(&lowCount, &highCount);
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while (duration--)
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{
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PRIntn loop = 5;
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while (loop--) PR_Sleep(oneSecond);
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if (debug_mode)
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PR_fprintf(debug_out, "high : low :: %d : %d\n", highCount, lowCount);
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}
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PR_ProcessExit((failed) ? 1 : 0);
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PR_ASSERT(!"You can't get here -- but you did!");
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return 1; /* or here */
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} /* main */
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#endif /* ifdef XP_MAC */
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/* priotest.c */
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