CMake/Source/kwsys/testProcess.c

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/*=========================================================================
Program: KWSys - Kitware System Library
Module: $RCSfile$
Copyright (c) Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "kwsysPrivate.h"
#include KWSYS_HEADER(Process.h)
/* Work-around CMake dependency scanning limitation. This must
duplicate the above list of headers. */
#if 0
# include "Process.h.in"
#endif
#include <stdio.h>
#include <stdlib.h>
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#include <string.h>
#if defined(_WIN32)
# include <windows.h>
#else
# include <unistd.h>
#endif
int runChild(const char* cmd[], int state, int exception, int value,
int share, int output, int delay, double timeout, int poll,
int repeat);
int test1(int argc, const char* argv[])
{
(void)argc; (void)argv;
fprintf(stdout, "Output on stdout from test returning 0.\n");
fprintf(stderr, "Output on stderr from test returning 0.\n");
return 0;
}
int test2(int argc, const char* argv[])
{
(void)argc; (void)argv;
fprintf(stdout, "Output on stdout from test returning 123.\n");
fprintf(stderr, "Output on stderr from test returning 123.\n");
return 123;
}
int test3(int argc, const char* argv[])
{
(void)argc; (void)argv;
fprintf(stdout, "Output before sleep on stdout from timeout test.\n");
fprintf(stderr, "Output before sleep on stderr from timeout test.\n");
fflush(stdout);
fflush(stderr);
#if defined(_WIN32)
Sleep(15000);
#else
sleep(15);
#endif
fprintf(stdout, "Output after sleep on stdout from timeout test.\n");
fprintf(stderr, "Output after sleep on stderr from timeout test.\n");
return 0;
}
int test4(int argc, const char* argv[])
{
#if defined(_WIN32)
/* Avoid error diagnostic popups since we are crashing on purpose. */
SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX);
#endif
(void)argc; (void)argv;
fprintf(stdout, "Output before crash on stdout from crash test.\n");
fprintf(stderr, "Output before crash on stderr from crash test.\n");
fflush(stdout);
fflush(stderr);
*(int*)0 = 0;
fprintf(stdout, "Output after crash on stdout from crash test.\n");
fprintf(stderr, "Output after crash on stderr from crash test.\n");
return 0;
}
/* Quick hack to test grandchild killing. */
/*#define TEST5_GRANDCHILD_KILL*/
#ifdef TEST5_GRANDCHILD_KILL
# define TEST5_TIMEOUT 10
#else
# define TEST5_TIMEOUT 30
#endif
int test5(int argc, const char* argv[])
{
int r;
const char* cmd[4];
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(void)argc;
cmd[0] = argv[0];
cmd[1] = "run";
#ifdef TEST5_GRANDCHILD_KILL
cmd[2] = "3";
#else
cmd[2] = "4";
#endif
cmd[3] = 0;
fprintf(stdout, "Output on stdout before recursive test.\n");
fprintf(stderr, "Output on stderr before recursive test.\n");
fflush(stdout);
fflush(stderr);
r = runChild(cmd, kwsysProcess_State_Exception,
kwsysProcess_Exception_Fault, 1, 1, 1, 0, 15, 0, 1);
fprintf(stdout, "Output on stdout after recursive test.\n");
fprintf(stderr, "Output on stderr after recursive test.\n");
fflush(stdout);
fflush(stderr);
return r;
}
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#define TEST6_SIZE (4096*2)
void test6(int argc, const char* argv[])
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{
int i;
char runaway[TEST6_SIZE+1];
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(void)argc; (void)argv;
for(i=0;i < TEST6_SIZE;++i)
{
runaway[i] = '.';
}
runaway[TEST6_SIZE] = '\n';
/* Generate huge amounts of output to test killing. */
for(;;)
{
fwrite(runaway, 1, TEST6_SIZE+1, stdout);
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fflush(stdout);
}
}
/* Define MINPOLL to be one more than the number of times output is
written. Define MAXPOLL to be the largest number of times a loop
delaying 1/10th of a second should ever have to poll. */
#define MINPOLL 5
#define MAXPOLL 20
int test7(int argc, const char* argv[])
{
(void)argc; (void)argv;
fprintf(stdout, "Output on stdout before sleep.\n");
fprintf(stderr, "Output on stderr before sleep.\n");
fflush(stdout);
fflush(stderr);
/* Sleep for 1 second. */
#if defined(_WIN32)
Sleep(1000);
#else
sleep(1);
#endif
fprintf(stdout, "Output on stdout after sleep.\n");
fprintf(stderr, "Output on stderr after sleep.\n");
fflush(stdout);
fflush(stderr);
return 0;
}
int runChild2(kwsysProcess* kp,
const char* cmd[], int state, int exception, int value,
int share, int output, int delay, double timeout,
int poll)
{
int result = 0;
char* data = 0;
int length = 0;
double userTimeout = 0;
double* pUserTimeout = 0;
kwsysProcess_SetCommand(kp, cmd);
if(timeout >= 0)
{
kwsysProcess_SetTimeout(kp, timeout);
}
if(share)
{
kwsysProcess_SetPipeShared(kp, kwsysProcess_Pipe_STDOUT, 1);
kwsysProcess_SetPipeShared(kp, kwsysProcess_Pipe_STDERR, 1);
}
kwsysProcess_Execute(kp);
if(poll)
{
pUserTimeout = &userTimeout;
}
if(!share)
{
int p;
while((p = kwsysProcess_WaitForData(kp, &data, &length, pUserTimeout)))
{
if(output)
{
if(poll && p == kwsysProcess_Pipe_Timeout)
{
fprintf(stdout, "WaitForData timeout reached.\n");
fflush(stdout);
/* Count the number of times we polled without getting data.
If it is excessive then kill the child and fail. */
if(++poll >= MAXPOLL)
{
fprintf(stdout, "Poll count reached limit %d.\n",
MAXPOLL);
kwsysProcess_Kill(kp);
}
}
else
{
fwrite(data, 1, length, stdout);
fflush(stdout);
}
}
if(poll)
{
/* Delay to avoid busy loop during polling. */
#if defined(_WIN32)
Sleep(100);
#else
usleep(100000);
#endif
}
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if(delay)
{
/* Purposely sleeping only on Win32 to let pipe fill up. */
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#if defined(_WIN32)
Sleep(100);
#endif
}
}
}
kwsysProcess_WaitForExit(kp, 0);
switch (kwsysProcess_GetState(kp))
{
case kwsysProcess_State_Starting:
printf("No process has been executed.\n"); break;
case kwsysProcess_State_Executing:
printf("The process is still executing.\n"); break;
case kwsysProcess_State_Expired:
printf("Child was killed when timeout expired.\n"); break;
case kwsysProcess_State_Exited:
printf("Child exited with value = %d\n",
kwsysProcess_GetExitValue(kp));
result = ((exception != kwsysProcess_GetExitException(kp)) ||
(value != kwsysProcess_GetExitValue(kp))); break;
case kwsysProcess_State_Killed:
printf("Child was killed by parent.\n"); break;
case kwsysProcess_State_Exception:
printf("Child terminated abnormally: %s\n",
kwsysProcess_GetExceptionString(kp));
result = ((exception != kwsysProcess_GetExitException(kp)) ||
(value != kwsysProcess_GetExitValue(kp))); break;
case kwsysProcess_State_Error:
printf("Error in administrating child process: [%s]\n",
kwsysProcess_GetErrorString(kp)); break;
};
if(result)
{
if(exception != kwsysProcess_GetExitException(kp))
{
fprintf(stderr, "Mismatch in exit exception. "
"Should have been %d, was %d.\n",
exception, kwsysProcess_GetExitException(kp));
}
if(value != kwsysProcess_GetExitValue(kp))
{
fprintf(stderr, "Mismatch in exit value. "
"Should have been %d, was %d.\n",
value, kwsysProcess_GetExitValue(kp));
}
}
if(kwsysProcess_GetState(kp) != state)
{
fprintf(stderr, "Mismatch in state. "
"Should have been %d, was %d.\n",
state, kwsysProcess_GetState(kp));
result = 1;
}
/* We should have polled more times than there were data if polling
was enabled. */
if(poll && poll < MINPOLL)
{
fprintf(stderr, "Poll count is %d, which is less than %d.\n",
poll, MINPOLL);
result = 1;
}
return result;
}
int runChild(const char* cmd[], int state, int exception, int value,
int share, int output, int delay, double timeout,
int poll, int repeat)
{
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int result = 1;
kwsysProcess* kp = kwsysProcess_New();
if(!kp)
{
fprintf(stderr, "kwsysProcess_New returned NULL!\n");
return 1;
}
while(repeat-- > 0)
{
result = runChild2(kp, cmd, state, exception, value, share,
output, delay, timeout, poll);
}
kwsysProcess_Delete(kp);
return result;
}
int main(int argc, const char* argv[])
{
int n = 0;
#if 0
{
HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE);
DuplicateHandle(GetCurrentProcess(), out,
GetCurrentProcess(), &out, 0, FALSE,
DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE);
SetStdHandle(STD_OUTPUT_HANDLE, out);
}
{
HANDLE out = GetStdHandle(STD_ERROR_HANDLE);
DuplicateHandle(GetCurrentProcess(), out,
GetCurrentProcess(), &out, 0, FALSE,
DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE);
SetStdHandle(STD_ERROR_HANDLE, out);
}
#endif
if(argc == 2)
{
n = atoi(argv[1]);
}
else if(argc == 3 && strcmp(argv[1], "run") == 0)
{
n = atoi(argv[2]);
}
/* Check arguments. */
if(n >= 1 && n <= 7 && argc == 3)
{
/* This is the child process for a requested test number. */
switch (n)
{
case 1: return test1(argc, argv);
case 2: return test2(argc, argv);
case 3: return test3(argc, argv);
case 4: return test4(argc, argv);
case 5: return test5(argc, argv);
case 6: test6(argc, argv); return 0;
case 7: return test7(argc, argv);
}
fprintf(stderr, "Invalid test number %d.\n", n);
return 1;
}
else if(n >= 1 && n <= 7)
{
/* This is the parent process for a requested test number. */
int states[7] =
{
kwsysProcess_State_Exited,
kwsysProcess_State_Exited,
kwsysProcess_State_Expired,
kwsysProcess_State_Exception,
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kwsysProcess_State_Exited,
kwsysProcess_State_Expired,
kwsysProcess_State_Exited
};
int exceptions[7] =
{
kwsysProcess_Exception_None,
kwsysProcess_Exception_None,
kwsysProcess_Exception_None,
kwsysProcess_Exception_Fault,
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kwsysProcess_Exception_None,
kwsysProcess_Exception_None,
kwsysProcess_Exception_None
};
int values[7] = {0, 123, 1, 1, 0, 0, 0};
int outputs[7] = {1, 1, 1, 1, 1, 0, 1};
int delays[7] = {0, 0, 0, 0, 0, 1, 0};
double timeouts[7] = {10, 10, 10, 10, TEST5_TIMEOUT, 10, -1};
int polls[7] = {0, 0, 0, 0, 0, 0, 1};
int repeat[7] = {2, 1, 1, 1, 1, 1, 1};
int r;
const char* cmd[4];
#ifdef _WIN32
char* argv0 = 0;
if(n == 0 && (argv0 = strdup(argv[0])))
{
/* Try converting to forward slashes to see if it works. */
char* c;
for(c=argv0; *c; ++c)
{
if(*c == '\\')
{
*c = '/';
}
}
cmd[0] = argv0;
}
else
{
cmd[0] = argv[0];
}
#else
cmd[0] = argv[0];
#endif
cmd[1] = "run";
cmd[2] = argv[1];
cmd[3] = 0;
fprintf(stdout, "Output on stdout before test %d.\n", n);
fprintf(stderr, "Output on stderr before test %d.\n", n);
fflush(stdout);
fflush(stderr);
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r = runChild(cmd, states[n-1], exceptions[n-1], values[n-1], 0,
outputs[n-1], delays[n-1], timeouts[n-1],
polls[n-1], repeat[n-1]);
fprintf(stdout, "Output on stdout after test %d.\n", n);
fprintf(stderr, "Output on stderr after test %d.\n", n);
fflush(stdout);
fflush(stderr);
#if _WIN32
if(argv0) { free(argv0); }
#endif
return r;
}
else if(argc > 2 && strcmp(argv[1], "0") == 0)
{
/* This is the special debugging test to run a given command
line. */
const char** cmd = argv+2;
int state = kwsysProcess_State_Exited;
int exception = kwsysProcess_Exception_None;
int value = 0;
double timeout = 0;
int r = runChild(cmd, state, exception, value, 0, 1, 0, timeout, 0, 1);
return r;
}
else
{
/* Improper usage. */
fprintf(stdout, "Usage: %s <test number>\n", argv[0]);
return 1;
}
}