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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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nsprpub/pr/tests/parent.c Normal file
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/* -*- 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 */