From 72c1491bba149c8fbd9eb81a0a529aa8bad47bb5 Mon Sep 17 00:00:00 2001
From: Corinna Vinschen <corinna@vinschen.de>
Date: Tue, 25 Jan 2005 22:45:11 +0000
Subject: 	* cygwin.din: Export getpriority and setpriority. 	*
 fork.cc (fork_parent): Copy parent's nice value into child. 	* spawn.cc
 (spawn_guts): Ditto. 	* miscfuncs.cc (winprio_to_nice): New function. 
 (nice_to_winprio): Ditto. 	* pinfo.cc (pinfo_init): If parent is not a
 Cygwin process, set 	default nice value according to current Win32 priority
 class. 	* pinfo.h (class _pinfo): Add nice member. 	* syscalls.cc
 (setpriority): New function, only implementing 	PRIO_PROCESS for now. 
 (getpriority): Ditto. 	(nice): Just call setpriority. 	* wincap.h
 (wincaps::has_extended_priority_class): New element. 	* wincap.cc: Implement
 above element throughout. 	* winsup.h: Add prototypes for winprio_to_nice
 and nice_to_winprio. 	* include/limits.h (NZERO): New define. 	*
 include/cygwin/types.h (id_t): New datatype. 	* include/cygwin/version.h:
 Bump API minor version. 	* include/sys/resource.h: Add PRIO_XXX defines
 and prototypes for 	getpriority and setpriority.

---
 winsup/cygwin/syscalls.cc | 59 ++++++++++++++++++++++-------------------------
 1 file changed, 27 insertions(+), 32 deletions(-)

(limited to 'winsup/cygwin/syscalls.cc')

diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index 889d0c782..7ea36273b 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -2443,46 +2443,41 @@ memccpy (_PTR out, const _PTR in, int c, size_t len)
 }
 
 extern "C" int
-nice (int incr)
+setpriority (int which, id_t who, int value)
 {
-  DWORD priority[] =
+  /* TODO: Support PRIO_PGRP and PRIO_USER. */
+  if (which != PRIO_PROCESS || (who != 0 && (pid_t) who != myself->pid))
     {
-      IDLE_PRIORITY_CLASS,
-      IDLE_PRIORITY_CLASS,
-      NORMAL_PRIORITY_CLASS,
-      HIGH_PRIORITY_CLASS,
-      REALTIME_PRIORITY_CLASS,
-      REALTIME_PRIORITY_CLASS
-    };
-  int curr = 2;
-
-  switch (GetPriorityClass (hMainProc))
+      set_errno (EINVAL);
+      return -1;
+    }
+  DWORD prio = nice_to_winprio (value);
+  if (SetPriorityClass (hMainProc, prio) == FALSE)
     {
-      case IDLE_PRIORITY_CLASS:
-	curr = 1;
-	break;
-      case NORMAL_PRIORITY_CLASS:
-	curr = 2;
-	break;
-      case HIGH_PRIORITY_CLASS:
-	curr = 3;
-	break;
-      case REALTIME_PRIORITY_CLASS:
-	curr = 4;
-	break;
+      __seterrno ();
+      return -1;
     }
-  if (incr > 0)
-    incr = -1;
-  else if (incr < 0)
-    incr = 1;
+  myself->nice = value;
+  debug_printf ("Set nice to %d", myself->nice);
+  return 0;
+}
 
-  if (SetPriorityClass (hMainProc, priority[curr + incr]) == FALSE)
+extern "C" int
+getpriority (int which, id_t who)
+{
+  /* TODO: Support PRIO_PGRP and PRIO_USER. */
+  if (which != PRIO_PROCESS || (who != 0 && (pid_t) who != myself->pid))
     {
-      __seterrno ();
+      set_errno (EINVAL);
       return -1;
     }
+  return myself->nice;
+}
 
-  return 0;
+extern "C" int
+nice (int incr)
+{
+  return setpriority (PRIO_PROCESS, myself->pid, myself->nice + incr);
 }
 
 /*
@@ -2588,7 +2583,7 @@ endutent ()
 }
 
 extern "C" void
-utmpname (_CONST char *file)
+utmpname (const char *file)
 {
   if (check_null_empty_str (file))
     {
-- 
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