2 This file is part of GNUnet
3 (C) 2002, 2003, 2004, 2005, 2006 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file util/os_priority.c
23 * @brief Methods to set process priority
28 #include "gnunet_common.h"
29 #include "gnunet_os_lib.h"
32 * Set process priority
34 * @param proc id of the process
35 * @param prio priority value
36 * @return GNUNET_OK on success, GNUNET_SYSERR on error
39 GNUNET_OS_set_process_priority (pid_t proc,
40 enum GNUNET_SCHEDULER_Priority prio)
44 GNUNET_assert (prio < GNUNET_SCHEDULER_PRIORITY_COUNT);
45 if (prio == GNUNET_SCHEDULER_PRIORITY_KEEP)
47 /* convert to MINGW/Unix values */
50 case GNUNET_SCHEDULER_PRIORITY_DEFAULT:
52 rprio = NORMAL_PRIORITY_CLASS;
57 case GNUNET_SCHEDULER_PRIORITY_HIGH:
59 rprio = ABOVE_NORMAL_PRIORITY_CLASS;
64 case GNUNET_SCHEDULER_PRIORITY_BACKGROUND:
66 rprio = BELOW_NORMAL_PRIORITY_CLASS;
71 case GNUNET_SCHEDULER_PRIORITY_UI:
72 case GNUNET_SCHEDULER_PRIORITY_URGENT:
74 rprio = HIGH_PRIORITY_CLASS;
79 case GNUNET_SCHEDULER_PRIORITY_IDLE:
81 rprio = IDLE_PRIORITY_CLASS;
90 /* Set process priority */
92 SetPriorityClass (GetCurrentProcess (), rprio);
94 if (proc == getpid ())
97 if ((-1 == nice (rprio)) && (errno != 0))
99 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING |
100 GNUNET_ERROR_TYPE_BULK, "nice");
101 return GNUNET_SYSERR;
106 if (0 != setpriority (PRIO_PROCESS, proc, rprio))
109 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING |
110 GNUNET_ERROR_TYPE_BULK, "setpriority");
111 return GNUNET_SYSERR;
122 * @param filename name of the binary
123 * @param ... NULL-terminated list of arguments to the process
124 * @return process ID of the new process, -1 on error
127 GNUNET_OS_start_process (const char *filename, ...)
136 #if HAVE_WORKING_VFORK
145 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "fork");
149 #if HAVE_WORKING_VFORK
150 /* let's hope vfork actually works; for some extreme cases (including
151 a testcase) we need 'execvp' to have run before we return, since
152 we may send a signal to the process next and we don't want it
153 to be caught by OUR signal handler (but either by the default
154 handler or the actual handler as installed by the process itself). */
156 /* let's give the child process a chance to run execvp, 1s should
157 be plenty in practice */
164 va_start (ap, filename);
165 while (NULL != va_arg (ap, char *))
168 argv = GNUNET_malloc (sizeof (char *) * (argc + 1));
170 va_start (ap, filename);
171 while (NULL != (argv[argc] = va_arg (ap, char *)))
174 execvp (filename, argv);
175 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "execvp", filename);
182 PROCESS_INFORMATION proc;
185 va_start (ap, filename);
186 while (NULL != (arg = va_arg (ap, char *)))
187 cmdlen = cmdlen + strlen (arg) + 3;
190 cmd = idx = GNUNET_malloc (sizeof (char) * cmdlen);
191 va_start (ap, filename);
192 while (NULL != (arg = va_arg (ap, char *)))
193 idx += sprintf (idx, "\"%s\" ", arg);
196 memset (&start, 0, sizeof (start));
197 start.cb = sizeof (start);
200 (filename, cmd, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &start,
203 SetErrnoFromWinError (GetLastError ());
204 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "fork");
207 CloseHandle (proc.hProcess);
208 CloseHandle (proc.hThread);
212 return proc.dwProcessId;
222 * @param filename name of the binary
223 * @param argv NULL-terminated list of arguments to the process
224 * @return process ID of the new process, -1 on error
227 GNUNET_OS_start_process_v (const char *filename, char *const argv[])
232 #if HAVE_WORKING_VFORK
241 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "fork");
245 #if HAVE_WORKING_VFORK
246 /* let's hope vfork actually works; for some extreme cases (including
247 a testcase) we need 'execvp' to have run before we return, since
248 we may send a signal to the process next and we don't want it
249 to be caught by OUR signal handler (but either by the default
250 handler or the actual handler as installed by the process itself). */
252 /* let's give the child process a chance to run execvp, 1s should
253 be plenty in practice */
259 execvp (filename, argv);
260 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "execvp", filename);
267 PROCESS_INFORMATION proc;
273 cmdlen = cmdlen + strlen (*arg) + 3;
277 cmd = idx = GNUNET_malloc (sizeof (char) * cmdlen);
281 idx += sprintf (idx, "\"%s\" ", *arg);
285 memset (&start, 0, sizeof (start));
286 start.cb = sizeof (start);
289 (filename, cmd, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &start,
292 SetErrnoFromWinError (GetLastError ());
293 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "fork");
296 CloseHandle (proc.hProcess);
297 CloseHandle (proc.hThread);
301 return proc.dwProcessId;
306 * Retrieve the status of a process
307 * @param proc process ID
308 * @param type status type
309 * @param code return code/signal number
310 * @return GNUNET_OK on success, GNUNET_NO if the process is still running, GNUNET_SYSERR otherwise
313 GNUNET_OS_process_status (pid_t proc, enum GNUNET_OS_ProcessStatusType *type,
320 GNUNET_assert (0 != proc);
321 ret = waitpid (proc, &status, WNOHANG);
324 *type = GNUNET_OS_PROCESS_RUNNING;
330 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "waitpid");
331 return GNUNET_SYSERR;
333 if (WIFEXITED (status))
335 *type = GNUNET_OS_PROCESS_EXITED;
336 *code = WEXITSTATUS (status);
338 else if (WIFSIGNALED (status))
340 *type = GNUNET_OS_PROCESS_SIGNALED;
341 *code = WTERMSIG (status);
343 else if (WIFSTOPPED (status))
345 *type = GNUNET_OS_PROCESS_SIGNALED;
346 *code = WSTOPSIG (status);
348 else if (WIFCONTINUED (status))
350 *type = GNUNET_OS_PROCESS_RUNNING;
355 *type = GNUNET_OS_PROCESS_UNKNOWN;
362 h = OpenProcess (PROCESS_QUERY_INFORMATION, FALSE, proc);
363 if (INVALID_HANDLE_VALUE == h)
365 SetErrnoFromWinError (GetLastError ());
366 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "OpenProcess");
367 return GNUNET_SYSERR;
370 c = GetExitCodeProcess (proc, &c);
371 if (STILL_ACTIVE == c)
373 *type = GNUNET_OS_PROCESS_RUNNING;
378 *type = GNUNET_OS_PROCESS_EXITED;
388 * @param proc process ID to wait for
389 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
392 GNUNET_OS_process_wait (pid_t proc)
395 if (proc != waitpid (proc, NULL, 0))
396 return GNUNET_SYSERR;
404 h = OpenProcess (PROCESS_QUERY_INFORMATION, FALSE, proc);
405 if (INVALID_HANDLE_VALUE == h)
407 SetErrnoFromWinError (GetLastError ());
408 return GNUNET_SYSERR;
411 if (WAIT_OBJECT_0 != WaitForSingleObject (h, INFINITE))
413 SetErrnoFromWinError (GetLastError ());
426 /* end of os_priority.c */