* Makefile.in: Add libusr32.a to DLL_IMPORTS.

* wincap.h (wincaps::is_server): New flag.
(wincapc::version): Change type to OSVERSIONINFOEX.
(wincapc::is_server): New function.
* wincap.cc (wincap_unknown::is_server): New initializer.
(wincap_95): Ditto.
(wincap_95osr2): Ditto.
(wincap_98): Ditto.
(wincap_me): Ditto.
(wincap_nt3): Ditto.
(wincap_nt4): Ditto.
(wincap_nt4sp4): Ditto.
(wincap_2000): Ditto.
(wincap_xp): Ditto.
(wincapc::init): Adapt to OSVERSIONINFOEX.  Add detection of NT server systems.
* sched.cc: Include windows.h and registry.h.
(sched_rr_get_interval): Re-implement for NT systems.

5 files changed, 121 insertions, 17 deletions

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 5b1306d75..0663b831d 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,24 @@
+2003-09-26  Vaclav Haisman  <V.Haisman@sh.cvut.cz>
+
+	* Makefile.in: Add libusr32.a to DLL_IMPORTS.
+	* wincap.h (wincaps::is_server): New flag.
+	(wincapc::version): Change type to OSVERSIONINFOEX.
+	(wincapc::is_server): New function.
+	* wincap.cc (wincap_unknown::is_server): New initializer.
+	(wincap_95): Ditto.
+	(wincap_95osr2): Ditto.
+	(wincap_98): Ditto.
+	(wincap_me): Ditto.
+	(wincap_nt3): Ditto.
+	(wincap_nt4): Ditto.
+	(wincap_nt4sp4): Ditto.
+	(wincap_2000): Ditto.
+	(wincap_xp): Ditto.
+	(wincapc::init): Adapt to OSVERSIONINFOEX.  Add detection of NT server
+	systems.
+	* sched.cc: Include windows.h and registry.h.
+	(sched_rr_get_interval): Re-implement for NT systems.
+
 2003-09-26  Christopher Faylor  <cgf@redhat.com>
 
 	* fhandler_tty.cc (fhandler_tty_slave::ioctl): Properly set
diff --git a/winsup/cygwin/autoload.cc b/winsup/cygwin/autoload.cc
index 9c1bb4731..1628480f8 100644
--- a/winsup/cygwin/autoload.cc
+++ b/winsup/cygwin/autoload.cc
@@ -415,11 +415,13 @@ LoadDLLfunc (DispatchMessageA, 4, user32)
 LoadDLLfunc (EmptyClipboard, 0, user32)
 LoadDLLfunc (FindWindowA, 8, user32)
 LoadDLLfunc (GetClipboardData, 4, user32)
+LoadDLLfunc (GetForegroundWindow, 0, user32)
 LoadDLLfunc (GetKeyboardLayout, 4, user32)
 LoadDLLfunc (GetMessageA, 16, user32)
 LoadDLLfunc (GetPriorityClipboardFormat, 8, user32)
 LoadDLLfunc (GetProcessWindowStation, 0, user32)
 LoadDLLfunc (GetThreadDesktop, 4, user32)
+LoadDLLfunc (GetWindowThreadProcessId, 8, user32)
 LoadDLLfunc (GetUserObjectInformationA, 20, user32)
 LoadDLLfunc (KillTimer, 8, user32)
 LoadDLLfunc (MessageBeep, 4, user32)
diff --git a/winsup/cygwin/sched.cc b/winsup/cygwin/sched.cc
index b29d7a49e..548c65957 100644
--- a/winsup/cygwin/sched.cc
+++ b/winsup/cygwin/sched.cc
@@ -14,6 +14,7 @@
 # include "config.h"
 #endif
 
+#define _WIN32_WINNT 0x300
 #include "winsup.h"
 #include <limits.h>
 #include "cygerrno.h"
@@ -24,6 +25,9 @@
 #include "pinfo.h"
 /* for getpid */
 #include <unistd.h>
+#include "registry.h"
+
+extern "C" HWND WINAPI GetForegroundWindow();
 
 /* Win32 priority to UNIX priority Mapping.
    For now, I'm just following the spec: any range of priorities is ok.
@@ -249,21 +253,75 @@ sched_getscheduler (pid_t pid)
 
 /* get the time quantum for pid
 
-   We can't return -11, errno ENOSYS, because that implies that
-   sched_get_priority_max & min are also not supported (according to the spec)
-   so some spec-driven autoconf tests will likely assume they aren't present either
-
-   returning ESRCH might confuse some applications (if they assumed that when
-   rr_get_interval is called on pid 0 it always works).
-
-   If someone knows the time quanta for the various win32 platforms, then a
-   simple check for the os we're running on will finish this function
+   Implemented only for NT systems, it fails and sets errno to ESRCH
+   for non-NT systems.
 */
 int
 sched_rr_get_interval (pid_t pid, struct timespec *interval)
 {
-  set_errno (ESRCH);
-  return -1;
+  static const char quantable[2][2][3] =
+    {{{12, 24, 36}, { 6, 12, 18}},
+     {{36, 36, 36}, {18, 18, 18}}};
+  /* FIXME: Clocktickinterval can be 15 ms for multi-processor system. */
+  static const int clocktickinterval = 10;
+  static const int quantapertick = 3;
+
+  HWND forwin;
+  DWORD forprocid;
+  int vfindex, slindex, qindex, prisep;
+  long nsec;
+
+  if (!wincap.is_winnt ())
+    {
+      set_errno (ESRCH);
+      return -1;
+    }
+
+  forwin = GetForegroundWindow ();
+  if (!forwin)
+    GetWindowThreadProcessId (forwin, &forprocid);
+  else
+    forprocid = 0;
+
+  reg_key reg (HKEY_LOCAL_MACHINE, KEY_READ, "SYSTEM", "CurrentControlSet",
+               "Control", "PriorityControl", NULL);
+  if (reg.error ())
+    {
+      set_errno (ESRCH);
+      return -1;
+    }
+  prisep = reg.get_int ("Win32PrioritySeparation", 2);
+  pinfo pi (pid ? pid : myself->pid);
+  if (!pi)
+    {
+      set_errno (ESRCH);
+      return -1;
+    }
+
+  if (pi->dwProcessId == forprocid)
+    {
+      qindex = prisep & 3;
+      qindex = qindex == 3 ? 2 : qindex;
+    }
+  else
+    qindex = 0;
+  vfindex = ((prisep >> 2) & 3) % 3;
+  if (vfindex == 0)
+    vfindex = wincap.is_server () || prisep & 3 == 0 ? 1 : 0;
+  else
+    vfindex -= 1;
+  slindex = ((prisep >> 4) & 3) % 3;
+  if (slindex == 0)
+    slindex = wincap.is_server () ? 1 : 0;
+  else
+    slindex -= 1;
+
+  nsec = quantable[vfindex][slindex][qindex] / quantapertick
+    * clocktickinterval * 1000000;
+  interval->tv_sec = nsec / 1000000000;
+  interval->tv_nsec = nsec % 1000000000;
+
+  return 0;
 }
 
 /* set the scheduling parameters */
diff --git a/winsup/cygwin/wincap.cc b/winsup/cygwin/wincap.cc
index 33676ee6f..0f69abee9 100644
--- a/winsup/cygwin/wincap.cc
+++ b/winsup/cygwin/wincap.cc
@@ -16,6 +16,7 @@ static NO_COPY wincaps wincap_unknown = {
   chunksize:0x0,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE,
   is_winnt:false,
+  is_server:false,
   access_denied_on_delete:false,
   has_delete_on_close:false,
   has_page_guard:false,
@@ -58,6 +59,7 @@ static NO_COPY wincaps wincap_95 = {
   chunksize:32 * 1024 * 1024,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE,
   is_winnt:false,
+  is_server:false,
   access_denied_on_delete:true,
   has_delete_on_close:false,
   has_page_guard:false,
@@ -100,6 +102,7 @@ static NO_COPY wincaps wincap_95osr2 = {
   chunksize:32 * 1024 * 1024,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE,
   is_winnt:false,
+  is_server:false,
   access_denied_on_delete:true,
   has_delete_on_close:false,
   has_page_guard:false,
@@ -142,6 +145,7 @@ static NO_COPY wincaps wincap_98 = {
   chunksize:32 * 1024 * 1024,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE,
   is_winnt:false,
+  is_server:false,
   access_denied_on_delete:true,
   has_delete_on_close:false,
   has_page_guard:false,
@@ -184,6 +188,7 @@ static NO_COPY wincaps wincap_98se = {
   chunksize:32 * 1024 * 1024,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE,
   is_winnt:false,
+  is_server:false,
   access_denied_on_delete:true,
   has_delete_on_close:false,
   has_page_guard:false,
@@ -226,6 +231,7 @@ static NO_COPY wincaps wincap_me = {
   chunksize:32 * 1024 * 1024,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE,
   is_winnt:false,
+  is_server:false,
   access_denied_on_delete:true,
   has_delete_on_close:false,
   has_page_guard:false,
@@ -268,6 +274,7 @@ static NO_COPY wincaps wincap_nt3 = {
   chunksize:0,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
   is_winnt:true,
+  is_server:false,
   access_denied_on_delete:false,
   has_delete_on_close:true,
   has_page_guard:true,
@@ -310,6 +317,7 @@ static NO_COPY wincaps wincap_nt4 = {
   chunksize:0,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
   is_winnt:true,
+  is_server:false,
   access_denied_on_delete:false,
   has_delete_on_close:true,
   has_page_guard:true,
@@ -352,6 +360,7 @@ static NO_COPY wincaps wincap_nt4sp4 = {
   chunksize:0,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
   is_winnt:true,
+  is_server:false,
   access_denied_on_delete:false,
   has_delete_on_close:true,
   has_page_guard:true,
@@ -394,6 +403,7 @@ static NO_COPY wincaps wincap_2000 = {
   chunksize:0,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
   is_winnt:true,
+  is_server:false,
   access_denied_on_delete:false,
   has_delete_on_close:true,
   has_page_guard:true,
@@ -436,6 +446,7 @@ static NO_COPY wincaps wincap_xp = {
   chunksize:0,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
   is_winnt:true,
+  is_server:false,
   access_denied_on_delete:false,
   has_delete_on_close:true,
   has_page_guard:true,
@@ -478,6 +489,7 @@ static NO_COPY wincaps wincap_2003 = {
   chunksize:0,
   shared:FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
   is_winnt:true,
+  is_server:true,
   access_denied_on_delete:false,
   has_delete_on_close:true,
   has_page_guard:true,
@@ -526,8 +538,8 @@ wincapc::init ()
     return;		// already initialized
 
   memset (&version, 0, sizeof version);
-  version.dwOSVersionInfoSize = sizeof version;
-  GetVersionEx (&version);
+  version.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
+  GetVersionEx (reinterpret_cast<LPOSVERSIONINFO> (&version));
 
   switch (version.dwPlatformId)
     {
@@ -599,6 +611,15 @@ wincapc::init ()
 	caps = &wincap_unknown;
 	break;
     }
+
+  if (((wincaps *)this->caps)->is_winnt && version.dwMajorVersion > 4)
+    {
+      version.dwOSVersionInfoSize = sizeof version;
+      GetVersionEx (reinterpret_cast<LPOSVERSIONINFO>(&version));
+      if (version.wProductType != VER_NT_WORKSTATION)
+	((wincaps *)this->caps)->is_server = true;
+    }
+
   __small_sprintf (osnam, "%s-%d.%d", os, version.dwMajorVersion,
 		   version.dwMinorVersion);
 }
diff --git a/winsup/cygwin/wincap.h b/winsup/cygwin/wincap.h
index faf246906..320b75916 100644
--- a/winsup/cygwin/wincap.h
+++ b/winsup/cygwin/wincap.h
@@ -17,6 +17,7 @@ struct wincaps
   DWORD    chunksize;
   int      shared;
   unsigned is_winnt                                     : 1;
+  unsigned is_server                                    : 1;
   unsigned access_denied_on_delete                      : 1;
   unsigned has_delete_on_close                          : 1;
   unsigned has_page_guard                               : 1;
@@ -56,9 +57,9 @@ struct wincaps
 
 class wincapc
 {
-  OSVERSIONINFO version;
-  char          osnam[40];
-  void          *caps;
+  OSVERSIONINFOEX  version;
+  char             osnam[40];
+  void             *caps;
 
 public:
   void init ();
@@ -67,12 +68,13 @@ public:
 
   const char *osname () const { return osnam; }
 
-#define IMPLEMENT(cap) cap() const { return ((wincaps *)this->caps)->cap; }
+#define IMPLEMENT(cap) cap() const { return ((wincaps *) this->caps)->cap; }
 
   DWORD IMPLEMENT (lock_file_highword)
   DWORD IMPLEMENT (chunksize)
   int   IMPLEMENT (shared)
   bool  IMPLEMENT (is_winnt)
+  bool  IMPLEMENT (is_server)
   bool  IMPLEMENT (access_denied_on_delete)
   bool  IMPLEMENT (has_delete_on_close)
   bool  IMPLEMENT (has_page_guard)