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
|
/* -*- 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: parent.c
** description: test the process machinery
*/
#include "prmem.h"
#include "prprf.h"
#include "prinit.h"
#include "prproces.h"
#include "prinrval.h"
typedef struct Child {
const char* name;
char** argv;
PRProcess* process;
PRProcessAttr* attr;
} Child;
/* for the default test 'cvar -c 2000' */
static char* default_argv[] = {"cvar", "-c", "2000", NULL};
static void PrintUsage(void) {
PR_fprintf(PR_GetSpecialFD(PR_StandardError),
"Usage: parent [-d] child [options]\n");
}
int main(int argc, char** argv) {
PRStatus rv;
PRInt32 test_status = 1;
PRIntervalTime t_start, t_elapsed;
PRFileDesc* debug = NULL;
Child* child = PR_NEWZAP(Child);
if (1 == argc) {
/* no command-line arguments: run the default test */
child->argv = default_argv;
} else {
argv += 1; /* don't care about our program name */
while (*argv != NULL && argv[0][0] == '-') {
if (argv[0][1] == 'd') {
debug = PR_GetSpecialFD(PR_StandardError);
} else {
PrintUsage();
return 2; /* not sufficient */
}
argv += 1;
}
child->argv = argv;
}
if (NULL == *child->argv) {
PrintUsage();
return 2;
}
child->name = *child->argv;
if (NULL != debug) {
PR_fprintf(debug, "Forking %s\n", child->name);
}
child->attr = PR_NewProcessAttr();
PR_ProcessAttrSetStdioRedirect(child->attr, PR_StandardOutput,
PR_GetSpecialFD(PR_StandardOutput));
PR_ProcessAttrSetStdioRedirect(child->attr, PR_StandardError,
PR_GetSpecialFD(PR_StandardError));
t_start = PR_IntervalNow();
child->process =
PR_CreateProcess(child->name, child->argv, NULL, child->attr);
t_elapsed = (PRIntervalTime)(PR_IntervalNow() - t_start);
PR_DestroyProcessAttr(child->attr);
test_status = (NULL == child->process) ? 1 : 0;
if (NULL != debug) {
PR_fprintf(debug, "Child was %sforked\n", (0 == test_status) ? "" : "NOT ");
if (0 == test_status)
PR_fprintf(debug, "PR_CreateProcess took %lu microseconds\n",
PR_IntervalToMicroseconds(t_elapsed));
}
if (0 == test_status) {
if (NULL != debug) {
PR_fprintf(debug, "Waiting for child to exit\n");
}
rv = PR_WaitProcess(child->process, &test_status);
if (PR_SUCCESS == rv) {
if (NULL != debug)
PR_fprintf(debug, "Child exited %s\n",
(0 == test_status) ? "successfully" : "with error");
} else {
test_status = 1;
if (NULL != debug) {
PR_fprintf(debug, "PR_WaitProcess failed\n");
}
}
}
PR_DELETE(child);
PR_Cleanup();
return test_status;
} /* main */
/* parent.c */
|
