1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61
|
/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2010 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU General Public License, as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any
* later version. Please see the file LICENSE-GPL for details.
*
* Web Page: http://mielke.cc/brltty/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#include "prologue.h"
#include "pid.h"
#if defined(__MINGW32__)
ProcessIdentifier
getProcessIdentifier (void) {
return GetCurrentProcessId();
}
int
testProcessIdentifier (ProcessIdentifier pid) {
HANDLE handle = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
if (!handle) return 0;
CloseHandle(handle);
return 1;
}
#elif defined(__MSDOS__)
ProcessIdentifier
getProcessIdentifier (void) {
return DOS_PROCESS_ID;
}
int
testProcessIdentifier (ProcessIdentifier pid) {
return pid == DOS_PROCESS_ID;
}
#else /* Unix */
#include <signal.h>
ProcessIdentifier
getProcessIdentifier (void) {
return getpid();
}
int
testProcessIdentifier (ProcessIdentifier pid) {
return kill(pid, 0) != -1;
}
#endif /* pid support */
|