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Diffstat (limited to 'nsprpub/pr/tests/lock.c')
| -rw-r--r-- | nsprpub/pr/tests/lock.c | 519 |
1 files changed, 519 insertions, 0 deletions
diff --git a/nsprpub/pr/tests/lock.c b/nsprpub/pr/tests/lock.c new file mode 100644 index 000000000..178315ae6 --- /dev/null +++ b/nsprpub/pr/tests/lock.c @@ -0,0 +1,519 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* +** File: lock.c +** Purpose: test basic locking functions +** +** Modification History: +** 14-May-97 AGarcia- Converted the test to accomodate the debug_mode flag. +** The debug mode will print all of the printfs associated with this test. +** The regress mode will be the default mode. Since the regress tool limits +** the output to a one line status:PASS or FAIL,all of the printf statements +** have been handled with an if (debug_mode) statement. +** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to +** recognize the return code from tha main program. +** +** 11-Aug-97 LarryH. Win16 port of NSPR. +** - Added "PASS", "FAIL" messages on completion. +** - Change stack variables to static scope variables +** because of shadow-stack use by Win16 +** - Added PR_CALLBACK attribute to functions called by NSPR +** - Added command line arguments: +** - l <num> to control the number of loops +** - c <num> to control the number of CPUs. +** (was positional argv). +** +** +***********************************************************************/ + +/*********************************************************************** +** Includes +***********************************************************************/ +/* Used to get the command line option */ +#include "plgetopt.h" + +#include "prio.h" +#include "prcmon.h" +#include "prinit.h" +#include "prinrval.h" +#include "prprf.h" +#include "prlock.h" +#include "prlog.h" +#include "prmon.h" +#include "prmem.h" +#include "prthread.h" +#include "prtypes.h" + +#include "plstr.h" + +#include <stdlib.h> + +#if defined(XP_UNIX) +#include <string.h> +#endif + +static PRIntn failed_already=0; +static PRFileDesc *std_err = NULL; +static PRBool verbosity = PR_FALSE; +static PRBool debug_mode = PR_FALSE; + +const static PRIntervalTime contention_interval = 50; + +typedef struct LockContentious_s { + PRLock *ml; + PRInt32 loops; + PRUint32 contender; + PRUint32 contentious; + PRIntervalTime overhead; + PRIntervalTime interval; +} LockContentious_t; + +typedef struct MonitorContentious_s { + PRMonitor *ml; + PRInt32 loops; + PRUint32 contender; + PRUint32 contentious; + PRIntervalTime overhead; + PRIntervalTime interval; +} MonitorContentious_t; + + +static PRIntervalTime Sleeper(PRUint32 loops) +{ + PRIntervalTime predicted = 0; + while (loops-- > 0) + { + predicted += contention_interval; + (void)PR_Sleep(contention_interval); + } + return predicted; +} /* Sleeper */ + +/* +** BASIC LOCKS +*/ +static PRIntervalTime MakeLock(PRUint32 loops) +{ + PRLock *ml = NULL; + while (loops-- > 0) + { + ml = PR_NewLock(); + PR_DestroyLock(ml); + ml = NULL; + } + return 0; +} /* MakeLock */ + +static PRIntervalTime NonContentiousLock(PRUint32 loops) +{ + PRLock *ml = NULL; + ml = PR_NewLock(); + while (loops-- > 0) + { + PR_Lock(ml); + PR_ASSERT_CURRENT_THREAD_OWNS_LOCK(ml); + PR_Unlock(ml); + } + PR_DestroyLock(ml); + return 0; +} /* NonContentiousLock */ + +static void PR_CALLBACK LockContender(void *arg) +{ + LockContentious_t *contention = (LockContentious_t*)arg; + while (contention->loops-- > 0) + { + PR_Lock(contention->ml); + PR_ASSERT_CURRENT_THREAD_OWNS_LOCK(contention->ml); + contention->contender+= 1; + contention->overhead += contention->interval; + PR_Sleep(contention->interval); + PR_ASSERT_CURRENT_THREAD_OWNS_LOCK(contention->ml); + PR_Unlock(contention->ml); + } +} /* LockContender */ + +static PRIntervalTime ContentiousLock(PRUint32 loops) +{ + PRStatus status; + PRThread *thread = NULL; + LockContentious_t * contention; + PRIntervalTime rv, overhead, timein = PR_IntervalNow(); + + contention = PR_NEWZAP(LockContentious_t); + contention->loops = loops; + contention->overhead = 0; + contention->ml = PR_NewLock(); + contention->interval = contention_interval; + thread = PR_CreateThread( + PR_USER_THREAD, LockContender, contention, + PR_PRIORITY_LOW, PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0); + PR_ASSERT(thread != NULL); + + overhead = PR_IntervalNow() - timein; + + while (contention->loops-- > 0) + { + PR_Lock(contention->ml); + PR_ASSERT_CURRENT_THREAD_OWNS_LOCK(contention->ml); + contention->contentious+= 1; + contention->overhead += contention->interval; + PR_Sleep(contention->interval); + PR_ASSERT_CURRENT_THREAD_OWNS_LOCK(contention->ml); + PR_Unlock(contention->ml); + } + + timein = PR_IntervalNow(); + status = PR_JoinThread(thread); + PR_DestroyLock(contention->ml); + overhead += (PR_IntervalNow() - timein); + rv = overhead + contention->overhead; + if (verbosity) + PR_fprintf( + std_err, "Access ratio: %u to %u\n", + contention->contentious, contention->contender); + PR_Free(contention); + return rv; +} /* ContentiousLock */ + +/* +** MONITORS +*/ +static PRIntervalTime MakeMonitor(PRUint32 loops) +{ + PRMonitor *ml = NULL; + while (loops-- > 0) + { + ml = PR_NewMonitor(); + PR_DestroyMonitor(ml); + ml = NULL; + } + return 0; +} /* MakeMonitor */ + +static PRIntervalTime NonContentiousMonitor(PRUint32 loops) +{ + PRMonitor *ml = NULL; + ml = PR_NewMonitor(); + while (loops-- > 0) + { + PR_EnterMonitor(ml); + PR_ASSERT_CURRENT_THREAD_IN_MONITOR(ml); + PR_ExitMonitor(ml); + } + PR_DestroyMonitor(ml); + return 0; +} /* NonContentiousMonitor */ + +static void PR_CALLBACK TryEntry(void *arg) +{ + PRMonitor *ml = (PRMonitor*)arg; + if (debug_mode) PR_fprintf(std_err, "Reentrant thread created\n"); + PR_EnterMonitor(ml); + PR_ASSERT_CURRENT_THREAD_IN_MONITOR(ml); + if (debug_mode) PR_fprintf(std_err, "Reentrant thread acquired monitor\n"); + PR_ExitMonitor(ml); + if (debug_mode) PR_fprintf(std_err, "Reentrant thread released monitor\n"); +} /* TryEntry */ + +static PRIntervalTime ReentrantMonitor(PRUint32 loops) +{ + PRStatus status; + PRThread *thread; + PRMonitor *ml = PR_NewMonitor(); + if (debug_mode) PR_fprintf(std_err, "\nMonitor created for reentrant test\n"); + + PR_EnterMonitor(ml); + PR_ASSERT_CURRENT_THREAD_IN_MONITOR(ml); + PR_EnterMonitor(ml); + PR_ASSERT_CURRENT_THREAD_IN_MONITOR(ml); + if (debug_mode) PR_fprintf(std_err, "Monitor acquired twice\n"); + + thread = PR_CreateThread( + PR_USER_THREAD, TryEntry, ml, + PR_PRIORITY_LOW, PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0); + PR_ASSERT(thread != NULL); + PR_Sleep(PR_SecondsToInterval(1)); + PR_ASSERT_CURRENT_THREAD_IN_MONITOR(ml); + + PR_ExitMonitor(ml); + PR_ASSERT_CURRENT_THREAD_IN_MONITOR(ml); + if (debug_mode) PR_fprintf(std_err, "Monitor released first time\n"); + + PR_ExitMonitor(ml); + if (debug_mode) PR_fprintf(std_err, "Monitor released second time\n"); + + status = PR_JoinThread(thread); + if (debug_mode) PR_fprintf(std_err, + "Reentrant thread joined %s\n", + (status == PR_SUCCESS) ? "successfully" : "in error"); + + PR_DestroyMonitor(ml); + return 0; +} /* ReentrantMonitor */ + +static void PR_CALLBACK MonitorContender(void *arg) +{ + MonitorContentious_t *contention = (MonitorContentious_t*)arg; + while (contention->loops-- > 0) + { + PR_EnterMonitor(contention->ml); + PR_ASSERT_CURRENT_THREAD_IN_MONITOR(contention->ml); + contention->contender+= 1; + contention->overhead += contention->interval; + PR_Sleep(contention->interval); + PR_ASSERT_CURRENT_THREAD_IN_MONITOR(contention->ml); + PR_ExitMonitor(contention->ml); + } +} /* MonitorContender */ + +static PRUint32 ContentiousMonitor(PRUint32 loops) +{ + PRStatus status; + PRThread *thread = NULL; + MonitorContentious_t * contention; + PRIntervalTime rv, overhead, timein = PR_IntervalNow(); + + contention = PR_NEWZAP(MonitorContentious_t); + contention->loops = loops; + contention->overhead = 0; + contention->ml = PR_NewMonitor(); + contention->interval = contention_interval; + thread = PR_CreateThread( + PR_USER_THREAD, MonitorContender, contention, + PR_PRIORITY_LOW, PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0); + PR_ASSERT(thread != NULL); + + overhead = PR_IntervalNow() - timein; + + while (contention->loops-- > 0) + { + PR_EnterMonitor(contention->ml); + PR_ASSERT_CURRENT_THREAD_IN_MONITOR(contention->ml); + contention->contentious+= 1; + contention->overhead += contention->interval; + PR_Sleep(contention->interval); + PR_ASSERT_CURRENT_THREAD_IN_MONITOR(contention->ml); + PR_ExitMonitor(contention->ml); + } + + timein = PR_IntervalNow(); + status = PR_JoinThread(thread); + PR_DestroyMonitor(contention->ml); + overhead += (PR_IntervalNow() - timein); + rv = overhead + contention->overhead; + if (verbosity) + PR_fprintf( + std_err, "Access ratio: %u to %u\n", + contention->contentious, contention->contender); + PR_Free(contention); + return rv; +} /* ContentiousMonitor */ + +/* +** CACHED MONITORS +*/ +static PRIntervalTime NonContentiousCMonitor(PRUint32 loops) +{ + MonitorContentious_t contention; + while (loops-- > 0) + { + PR_CEnterMonitor(&contention); + PR_CExitMonitor(&contention); + } + return 0; +} /* NonContentiousCMonitor */ + +static void PR_CALLBACK Contender(void *arg) +{ + MonitorContentious_t *contention = (MonitorContentious_t*)arg; + while (contention->loops-- > 0) + { + PR_CEnterMonitor(contention); + contention->contender+= 1; + contention->overhead += contention->interval; + PR_Sleep(contention->interval); + PR_CExitMonitor(contention); + } +} /* Contender */ + +static PRIntervalTime ContentiousCMonitor(PRUint32 loops) +{ + PRStatus status; + PRThread *thread = NULL; + MonitorContentious_t * contention; + PRIntervalTime overhead, timein = PR_IntervalNow(); + + contention = PR_NEWZAP(MonitorContentious_t); + contention->ml = NULL; + contention->loops = loops; + contention->interval = contention_interval; + thread = PR_CreateThread( + PR_USER_THREAD, Contender, contention, + PR_PRIORITY_LOW, PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0); + PR_ASSERT(thread != NULL); + + overhead = PR_IntervalNow() - timein; + + while (contention->loops-- > 0) + { + PR_CEnterMonitor(contention); + contention->contentious+= 1; + contention->overhead += contention->interval; + PR_Sleep(contention->interval); + PR_CExitMonitor(contention); + } + + timein = PR_IntervalNow(); + status = PR_JoinThread(thread); + overhead += (PR_IntervalNow() - timein); + overhead += overhead + contention->overhead; + if (verbosity) + PR_fprintf( + std_err, "Access ratio: %u to %u\n", + contention->contentious, contention->contender); + PR_Free(contention); + return overhead; +} /* ContentiousCMonitor */ + +static PRIntervalTime Test( + const char* msg, PRUint32 (*test)(PRUint32 loops), + PRUint32 loops, PRIntervalTime overhead) +{ + /* + * overhead - overhead not measured by the test. + * duration - wall clock time it took to perform test. + * predicted - extra time test says should not be counted + * + * Time accountable to the test is duration - overhead - predicted + * All times are Intervals and accumulated for all iterations. + */ + PRFloat64 elapsed; + PRIntervalTime accountable, duration; + PRUintn spaces = PL_strlen(msg); + PRIntervalTime timeout, timein = PR_IntervalNow(); + PRIntervalTime predicted = test(loops); + timeout = PR_IntervalNow(); + duration = timeout - timein; + + if (debug_mode) + { + accountable = duration - predicted; + accountable -= overhead; + elapsed = (PRFloat64)PR_IntervalToMicroseconds(accountable); + PR_fprintf(PR_STDOUT, "%s:", msg); + while (spaces++ < 50) PR_fprintf(PR_STDOUT, " "); + if ((PRInt32)accountable < 0) + PR_fprintf(PR_STDOUT, "*****.** usecs/iteration\n"); + else + PR_fprintf(PR_STDOUT, "%8.2f usecs/iteration\n", elapsed/loops); + } + return duration; +} /* Test */ + +int main(int argc, char **argv) +{ + PRBool rv = PR_TRUE; + PRIntervalTime duration; + PRUint32 cpu, cpus = 2, loops = 100; + + + PR_STDIO_INIT(); + PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0); + { + /* The command line argument: -d is used to determine if the test is being run + in debug mode. The regress tool requires only one line output:PASS or FAIL. + All of the printfs associated with this test has been handled with a if (debug_mode) + test. + Command line argument -l <num> sets the number of loops. + Command line argument -c <num> sets the number of cpus. + Usage: lock [-d] [-l <num>] [-c <num>] + */ + PLOptStatus os; + PLOptState *opt = PL_CreateOptState(argc, argv, "dvl:c:"); + while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) + { + if (PL_OPT_BAD == os) continue; + switch (opt->option) + { + case 'd': /* debug mode */ + debug_mode = PR_TRUE; + break; + case 'v': /* debug mode */ + verbosity = PR_TRUE; + break; + case 'l': /* number of loops */ + loops = atoi(opt->value); + break; + case 'c': /* number of cpus */ + cpus = atoi(opt->value); + break; + default: + break; + } + } + PL_DestroyOptState(opt); + } + + /* main test */ + PR_SetConcurrency(8); + + if (loops == 0) loops = 100; + if (debug_mode) + { + std_err = PR_STDERR; + PR_fprintf(std_err, "Lock: Using %d loops\n", loops); + } + + if (cpus == 0) cpus = 2; + if (debug_mode) PR_fprintf(std_err, "Lock: Using %d cpu(s)\n", cpus); + + (void)Sleeper(10); /* try filling in the caches */ + + for (cpu = 1; cpu <= cpus; ++cpu) + { + if (debug_mode) PR_fprintf(std_err, "\nLock: Using %d CPU(s)\n", cpu); + PR_SetConcurrency(cpu); + + duration = Test("Overhead of PR_Sleep", Sleeper, loops, 0); + duration = 0; + + (void)Test("Lock creation/deletion", MakeLock, loops, 0); + (void)Test("Lock non-contentious locking/unlocking", NonContentiousLock, loops, 0); + (void)Test("Lock contentious locking/unlocking", ContentiousLock, loops, duration); + (void)Test("Monitor creation/deletion", MakeMonitor, loops, 0); + (void)Test("Monitor non-contentious locking/unlocking", NonContentiousMonitor, loops, 0); + (void)Test("Monitor contentious locking/unlocking", ContentiousMonitor, loops, duration); + + (void)Test("Cached monitor non-contentious locking/unlocking", NonContentiousCMonitor, loops, 0); + (void)Test("Cached monitor contentious locking/unlocking", ContentiousCMonitor, loops, duration); + + (void)ReentrantMonitor(loops); + } + + if (debug_mode) + PR_fprintf( + std_err, "%s: test %s\n", "Lock(mutex) test", + ((rv) ? "passed" : "failed")); + else { + if (!rv) + failed_already=1; + } + + if(failed_already) + { + PR_fprintf(PR_STDOUT, "FAIL\n"); + return 1; + } + else + { + PR_fprintf(PR_STDOUT, "PASS\n"); + return 0; + } + +} /* main */ + +/* testlock.c */ |