import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

2026-09-27 02:47:31 +09:00 · 2018-01-19 03:59:58 +08:00 · 2018-01-19 03:59:58 +08:00 · dcd9973243
commit dcd9973243
150858 changed files with 23884658 additions and 0 deletions
--- a/nsprpub/pr/tests/lock.c
+++ 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 */