зеркало из https://github.com/mozilla/gecko-dev.git
139 строки
3.7 KiB
C
139 строки
3.7 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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** file: parent.c
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** description: test the process machinery
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*/
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#include "prmem.h"
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#include "prprf.h"
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#include "prinit.h"
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#include "prproces.h"
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#include "prinrval.h"
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typedef struct Child
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{
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const char *name;
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char **argv;
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PRProcess *process;
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PRProcessAttr *attr;
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} Child;
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/* for the default test 'cvar -c 2000' */
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static char *default_argv[] = {"cvar", "-c", "2000", NULL};
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static void PrintUsage(void)
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{
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PR_fprintf(PR_GetSpecialFD(PR_StandardError),
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"Usage: parent [-d] child [options]\n");
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}
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PRIntn main (PRIntn argc, char **argv)
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{
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PRStatus rv;
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PRInt32 test_status = 1;
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PRIntervalTime t_start, t_elapsed;
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PRFileDesc *debug = NULL;
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Child *child = PR_NEWZAP(Child);
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if (1 == argc)
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{
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/* no command-line arguments: run the default test */
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child->argv = default_argv;
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}
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else
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{
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argv += 1; /* don't care about our program name */
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while (*argv != NULL && argv[0][0] == '-')
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{
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if (argv[0][1] == 'd')
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debug = PR_GetSpecialFD(PR_StandardError);
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else
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{
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PrintUsage();
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return 2; /* not sufficient */
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}
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argv += 1;
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}
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child->argv = argv;
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}
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if (NULL == *child->argv)
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{
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PrintUsage();
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return 2;
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}
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child->name = *child->argv;
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if (NULL != debug) PR_fprintf(debug, "Forking %s\n", child->name);
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child->attr = PR_NewProcessAttr();
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PR_ProcessAttrSetStdioRedirect(
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child->attr, PR_StandardOutput,
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PR_GetSpecialFD(PR_StandardOutput));
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PR_ProcessAttrSetStdioRedirect(
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child->attr, PR_StandardError,
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PR_GetSpecialFD(PR_StandardError));
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t_start = PR_IntervalNow();
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child->process = PR_CreateProcess(
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child->name, child->argv, NULL, child->attr);
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t_elapsed = (PRIntervalTime) (PR_IntervalNow() - t_start);
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PR_DestroyProcessAttr(child->attr);
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test_status = (NULL == child->process) ? 1 : 0;
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if (NULL != debug)
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{
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PR_fprintf(
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debug, "Child was %sforked\n",
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(0 == test_status) ? "" : "NOT ");
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if (0 == test_status)
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PR_fprintf(
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debug, "PR_CreateProcess took %lu microseconds\n",
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PR_IntervalToMicroseconds(t_elapsed));
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}
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if (0 == test_status)
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{
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if (NULL != debug) PR_fprintf(debug, "Waiting for child to exit\n");
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rv = PR_WaitProcess(child->process, &test_status);
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if (PR_SUCCESS == rv)
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{
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if (NULL != debug)
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PR_fprintf(
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debug, "Child exited %s\n",
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(0 == test_status) ? "successfully" : "with error");
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}
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else
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{
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test_status = 1;
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if (NULL != debug)
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PR_fprintf(debug, "PR_WaitProcess failed\n");
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}
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}
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PR_DELETE(child);
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PR_Cleanup();
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return test_status;
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} /* main */
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/* parent.c */
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