1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/*
** File: concur.c
** Description: test of adding and removing concurrency options
*/
#include "prcvar.h"
#include "prinit.h"
#include "prinrval.h"
#include "prlock.h"
#include "prprf.h"
#include "plgetopt.h"
#if defined(XP_MAC)
#include "pprio.h"
#else
#include "private/pprio.h"
#endif
#include <stdlib.h>
#define DEFAULT_RANGE 20
#define DEFAULT_LOOPS 100
static PRThreadScope thread_scope = PR_LOCAL_THREAD;
typedef struct Context
{
PRLock *ml;
PRCondVar *cv;
PRIntn want, have;
} Context;
/*
** Make the instance of 'context' static (not on the stack)
** for Win16 threads
*/
static Context context = {NULL, NULL, 0, 0};
static void PR_CALLBACK Dull(void *arg)
{
Context *context = (Context*)arg;
PR_Lock(context->ml);
context->have += 1;
while (context->want >= context->have)
PR_WaitCondVar(context->cv, PR_INTERVAL_NO_TIMEOUT);
context->have -= 1;
PR_Unlock(context->ml);
} /* Dull */
PRIntn PR_CALLBACK Concur(PRIntn argc, char **argv)
{
PRUintn cpus;
PLOptStatus os;
PRBool debug = PR_FALSE;
PRUintn range = DEFAULT_RANGE;
PRUintn loops = DEFAULT_LOOPS;
PRIntervalTime hundredMills = PR_MillisecondsToInterval(100);
PLOptState *opt = PL_CreateOptState(argc, argv, "Gdl:r:");
while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
{
if (PL_OPT_BAD == os) continue;
switch (opt->option)
{
case 'G': /* GLOBAL threads */
thread_scope = PR_GLOBAL_THREAD;
break;
case 'd': /* debug mode */
debug = PR_TRUE;
break;
case 'r': /* range limit */
range = atoi(opt->value);
break;
case 'l': /* loop counter */
loops = atoi(opt->value);
break;
default:
break;
}
}
PL_DestroyOptState(opt);
if (0 == range) range = DEFAULT_RANGE;
if (0 == loops) loops = DEFAULT_LOOPS;
context.ml = PR_NewLock();
context.cv = PR_NewCondVar(context.ml);
if (debug)
PR_fprintf(
PR_STDERR, "Testing with %d CPUs and %d interations\n", range, loops);
while (--loops > 0)
{
for (cpus = 1; cpus < range; ++cpus)
{
PR_SetConcurrency(cpus);
context.want = cpus;
(void)PR_CreateThread(
PR_USER_THREAD, Dull, &context, PR_PRIORITY_NORMAL,
thread_scope, PR_UNJOINABLE_THREAD, 0);
}
PR_Sleep(hundredMills);
for (cpus = range; cpus > 0; cpus--)
{
PR_SetConcurrency(cpus);
context.want = cpus - 1;
PR_Lock(context.ml);
PR_NotifyCondVar(context.cv);
PR_Unlock(context.ml);
}
}
if (debug)
PR_fprintf(
PR_STDERR, "Waiting for %d thread(s) to exit\n", context.have);
while (context.have > 0) PR_Sleep(hundredMills);
if (debug)
PR_fprintf(
PR_STDERR, "Finished [want: %d, have: %d]\n",
context.want, context.have);
PR_DestroyLock(context.ml);
PR_DestroyCondVar(context.cv);
PR_fprintf(PR_STDERR, "PASSED\n");
return 0;
} /* Concur */
PRIntn main(PRIntn argc, char **argv)
{
PR_STDIO_INIT();
return PR_Initialize(Concur, argc, argv, 0);
} /* main */
/* concur.c */
|
