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/* Copyright (c) 2001, Stanford University
* All rights reserved
*
* See the file LICENSE.txt for information on redistributing this software.
*/
#include "cr_error.h"
#include "cr_process.h"
#include "cr_string.h"
#include "cr_mem.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <signal.h>
#ifndef WINDOWS
#include <unistd.h>
# ifdef VBOX
# include <string.h>
# endif
#else
#pragma warning ( disable : 4127 )
#define snprintf _snprintf
#endif
/**
* Sleep/pause for the given number of seconds.
*/
void crSleep( unsigned int seconds )
{
#ifdef WINDOWS
Sleep(seconds*1000); /* milliseconds */
#else
sleep(seconds);
#endif
}
/**
* Sleep/pause for the given number of milliseconds.
*/
void crMsleep( unsigned int msec )
{
#ifdef WINDOWS
Sleep(msec);
#else
usleep(msec*1000); /* usecs */
#endif
}
/*
* Spawn (i.e. fork/exec) a new process.
*/
CRpid crSpawn( const char *command, const char *argv[] )
{
#ifdef WINDOWS
char newargv[1000];
int i;
STARTUPINFO si;
PROCESS_INFORMATION pi;
(void) command;
ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
ZeroMemory( &pi, sizeof(pi) );
crStrncpy(newargv, argv[0], 1000 );
for (i = 1; argv[i]; i++) {
crStrcat(newargv, " ");
crStrcat(newargv, argv[i]);
}
if ( !CreateProcess(NULL, newargv, NULL, NULL, FALSE, 0, NULL,
NULL, &si, &pi) )
{
crWarning("crSpawn failed, %d", GetLastError());
return 0;
}
return pi.hProcess;
#else
pid_t pid;
if ((pid = fork()) == 0)
{
/* I'm the child */
int err = execvp(command, (char * const *) argv);
crWarning("crSpawn failed (return code: %d)", err);
return 0;
}
return (unsigned long) pid;
#endif
}
/*
* Kill the named process.
*/
void crKill( CRpid pid )
{
#ifdef WINDOWS
TerminateProcess( pid, 0 );
#else
kill((pid_t) pid, SIGKILL);
#endif
}
/*
* Return the name of the running process.
* name[0] will be zero if anything goes wrong.
*/
void crGetProcName( char *name, int maxLen )
{
#ifdef WINDOWS
char command[1000];
int c = 0;
*name = 0;
if (!GetModuleFileName( NULL, command, maxLen ))
return;
while (1) {
/* crude mechanism to blank out the backslashes
* in the Windows filename and recover the actual
* program name to return */
if (crStrstr(command, "\\")) {
crStrncpy(name, command+c+1, maxLen);
command[c] = 32;
c++;
}
else
break;
}
#else
#ifdef VBOX
const char *pszExecName, *pszProgName;
# ifdef SunOS
pszExecName = getexecname();
# elif defined(DARWIN)
pszExecName = getprogname();
# else
extern const char *__progname;
pszExecName = __progname;
# endif
if (!pszExecName)
pszExecName = "<unknown>";
pszProgName = strrchr(pszExecName, '/');
if (pszProgName && *(pszProgName + 1))
pszProgName++;
else
pszProgName = pszExecName;
strncpy(name, pszProgName, maxLen);
name[maxLen - 1] = '\0';
# else
/* Unix:
* Call getpid() to get our process ID.
* Then use system() to write the output of 'ps' to a temp file.
* Read/scan the temp file to map the process ID to process name.
* I'd love to find a better solution! (BrianP)
*/
FILE *f;
pid_t pid = getpid();
char *tmp, command[1000];
/* init to NULL in case of early return */
*name = 0;
/* get a temporary file name */
tmp = tmpnam(NULL);
if (!tmp)
return;
/* pipe output of ps to temp file */
#ifndef SunOS
sprintf(command, "ps > %s", tmp);
#else
sprintf(command, "ps -e -o 'pid tty time comm'> %s", tmp);
#endif
system(command);
/* open/scan temp file */
f = fopen(tmp, "r");
if (f) {
char buffer[1000], cmd[1000], *psz, *pname;
while (!feof(f)) {
int id;
fgets(buffer, 999, f);
sscanf(buffer, "%d %*s %*s %999s", &id, cmd);
if (id == pid) {
for (pname=psz=&cmd[0]; *psz!=0; psz++)
{
switch (*psz)
{
case '/':
pname = psz+1;
break;
}
}
crStrncpy(name, pname, maxLen);
break;
}
}
fclose(f);
}
remove(tmp);
# endif
#endif
}
/*
* Return current directory string.
*/
void crGetCurrentDir( char *dir, int maxLen )
{
#ifdef WINDOWS
if (!GetCurrentDirectory(maxLen, dir))
dir[0] = 0;
#else
if (!getcwd(dir, maxLen))
dir[0] = 0;
#endif
}
/**
* Return current process ID number.
*/
CRpid crGetPID(void)
{
#ifdef WINDOWS
/*return _getpid();*/
return GetCurrentProcess();
#else
return getpid();
#endif
}
#if 0
/* simple test harness */
int main(int argc, char **argv)
{
char name[100];
printf("argv[0] = %s\n", argv[0]);
crGetProcName(name, 100);
printf("crGetProcName returned %s\n", name);
return 0;
}
#endif
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