mcs/class/Mono.Posix/Mono.Posix/PosixProcess.cs

   1 //
   2 // Mono.Posix/PosixProcess.cs
   3 //
   4 // Authors:
   5 //   Jonathan Pryor (jonpryor@vt.edu)
   6 //
   7 // (C) 2004 Jonathan Pryor
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using Mono.Posix;
  31
  32 namespace Mono.Posix {
  33
  34         public sealed class PosixProcess
  35         {
  36                 private int pid;
  37
  38                 private PosixProcess (int pid)
  39                 {
  40                         this.pid = pid;
  41                 }
  42
  43                 public int Id {
  44                         get {return pid;}
  45                 }
  46
  47                 public bool HasExited {
  48                         get {
  49                                 int status = GetProcessStatus ();
  50                                 return Syscall.WIFEXITED (status);
  51                         }
  52                 }
  53
  54                 private int GetProcessStatus ()
  55                 {
  56                         int status;
  57                         int r = Syscall.waitpid (pid, out status,
  58                                         WaitOptions.WNOHANG | WaitOptions.WUNTRACED);
  59                         PosixMarshal.ThrowExceptionForLastErrorIf (r);
  60                         return r;
  61                 }
  62
  63                 public int ExitCode {
  64                         get {
  65                                 if (!HasExited)
  66                                         throw new InvalidOperationException (
  67                                                         Locale.GetText ("Process hasn't exited"));
  68                                 int status = GetProcessStatus ();
  69                                 return Syscall.WEXITSTATUS (status);
  70                         }
  71                 }
  72
  73                 public bool HasSignaled {
  74                         get {
  75                                 int status = GetProcessStatus ();
  76                                 return Syscall.WIFSIGNALED (status);
  77                         }
  78                 }
  79
  80                 public Signum TerminationSignal {
  81                         get {
  82                                 if (!HasSignaled)
  83                                         throw new InvalidOperationException (
  84                                                         Locale.GetText ("Process wasn't terminated by a signal"));
  85                                 int status = GetProcessStatus ();
  86                                 return Syscall.WTERMSIG (status);
  87                         }
  88                 }
  89
  90                 public bool HasStopped {
  91                         get {
  92                                 int status = GetProcessStatus ();
  93                                 return Syscall.WIFSTOPPED (status);
  94                         }
  95                 }
  96
  97                 public Signum StopSignal {
  98                         get {
  99                                 if (!HasStopped)
 100                                         throw new InvalidOperationException (
 101                                                         Locale.GetText ("Process isn't stopped"));
 102                                 int status = GetProcessStatus ();
 103                                 return Syscall.WSTOPSIG (status);
 104                         }
 105                 }
 106
 107                 public int ProcessGroupId {
 108                         get {return Syscall.getpgid (pid);}
 109                         set {
 110                                 int r = Syscall.setpgid (pid, value);
 111                                 PosixMarshal.ThrowExceptionForLastErrorIf (r);
 112                         }
 113                 }
 114
 115                 public int SessionId {
 116                         get {
 117                                 int r = Syscall.getsid (pid);
 118                                 PosixMarshal.ThrowExceptionForLastErrorIf (r);
 119                                 return r;
 120                         }
 121                 }
 122
 123                 public static PosixProcess GetCurrentProcess ()
 124                 {
 125                         return new PosixProcess (GetCurrentProcessId ());
 126                 }
 127
 128                 public static int GetCurrentProcessId ()
 129                 {
 130                         return Syscall.getpid ();
 131                 }
 132
 133                 public void Kill ()
 134                 {
 135                         Signal (Signum.SIGKILL);
 136                 }
 137
 138                 public void Signal (Signum signal)
 139                 {
 140                         int r = Syscall.kill (pid, signal);
 141                         PosixMarshal.ThrowExceptionForLastErrorIf (r);
 142                 }
 143
 144                 public void WaitForExit ()
 145                 {
 146                         int status;
 147                         int r;
 148                         Error e;
 149                         do {
 150                                 r = Syscall.waitpid (pid, out status, (WaitOptions) 0);
 151                         } while (r == -1 && (e = Syscall.GetLastError()) == Error.EINTR);
 152                         PosixMarshal.ThrowExceptionForLastErrorIf (r);
 153                 }
 154         }
 155 }
 156
 157 // vim: noexpandtab