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/*
This file is part of GNUnet
(C) 2002, 2003, 2004, 2005, 2006 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file util/os/priority.c
* @brief Methods to set process priority
* @author Nils Durner
*/
#include "platform.h"
#include "gnunet_common.h"
#include "gnunet_os_lib.h"
/**
* Set our process priority
*/
int
GNUNET_OS_set_process_priority (pid_t proc,
enum GNUNET_SCHEDULER_Priority eprio)
{
int prio = 0;
GNUNET_assert (eprio < GNUNET_SCHEDULER_PRIORITY_COUNT);
if (eprio == GNUNET_SCHEDULER_PRIORITY_KEEP)
return GNUNET_OK;
/* convert to MINGW/Unix values */
switch (eprio)
{
case GNUNET_SCHEDULER_PRIORITY_DEFAULT:
#ifdef MINGW
prio = NORMAL_PRIORITY_CLASS;
#else
prio = 0;
#endif
break;
case GNUNET_SCHEDULER_PRIORITY_HIGH:
#ifdef MINGW
prio = ABOVE_NORMAL_PRIORITY_CLASS;
#else
prio = -5;
#endif
break;
case GNUNET_SCHEDULER_PRIORITY_BACKGROUND:
#ifdef MINGW
prio = BELOW_NORMAL_PRIORITY_CLASS;
#else
prio = 10;
#endif
break;
case GNUNET_SCHEDULER_PRIORITY_UI:
case GNUNET_SCHEDULER_PRIORITY_URGENT:
#ifdef MINGW
prio = HIGH_PRIORITY_CLASS;
#else
prio = -10;
#endif
break;
case GNUNET_SCHEDULER_PRIORITY_IDLE:
#ifdef MINGW
prio = IDLE_PRIORITY_CLASS;
#else
prio = 19;
#endif
break;
default:
GNUNET_assert (0);
return GNUNET_SYSERR;
}
/* Set process priority */
#ifdef MINGW
SetPriorityClass (GetCurrentProcess (), prio);
#else
if (proc == getpid ())
{
errno = 0;
if ((-1 == nice (prio)) && (errno != 0))
{
GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING |
GNUNET_ERROR_TYPE_BULK, "nice");
return GNUNET_SYSERR;
}
}
else
{
if (0 != setpriority (PRIO_PROCESS, proc, prio))
{
GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING |
GNUNET_ERROR_TYPE_BULK, "setpriority");
return GNUNET_SYSERR;
}
}
#endif
return GNUNET_OK;
}
/**
* Start a process.
*
* @param filename name of the binary
* @param ... NULL-terminated list of arguments to the process
* @return process ID of the new process, -1 on error
*/
pid_t
GNUNET_OS_start_process (const char *filename, ...)
{
pid_t ret;
char **argv;
va_list ap;
int argc;
ret = fork ();
if (ret != 0)
{
if (ret == -1)
GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "fork");
return ret;
}
argc = 0;
va_start (ap, filename);
while (NULL != va_arg (ap, char *))
argc++;
va_end (ap);
argv = GNUNET_malloc (sizeof (char *) * (argc + 1));
argc = 0;
va_start (ap, filename);
while (NULL != (argv[argc] = va_arg (ap, char *)))
argc++;
va_end (ap);
execvp (filename, argv);
GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "execvp", filename);
exit (1);
}
/**
* Start a process.
*
* @param filename name of the binary
* @param argv NULL-terminated list of arguments to the process
* @return process ID of the new process, -1 on error
*/
pid_t
GNUNET_OS_start_process_v (const char *filename, char *const argv[])
{
pid_t ret;
ret = fork ();
if (ret != 0)
{
if (ret == -1)
GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "fork");
return ret;
}
execvp (filename, argv);
GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "execvp", filename);
exit (1);
}
/* end of os_priority.c */
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