* cygheap.h: Remove some parameter names from declarations throughout.

(cygheap::set): Reflect changes in declaration for arguments and return value
from previous checkin.

winsup/cygwin/ChangeLog

@@ -1,3 +1,9 @@
+2004-05-15  Christopher Faylor  <cgf@alum.bu.edu>
+
+	* cygheap.h: Remove some parameter names from declarations throughout.
+	(cygheap::set): Reflect changes in declaration for arguments and return
+	value from previous checkin.
+
 2004-05-15  Pierre Humblet  <pierre.humblet@ieee.org>
 
 	* cygheap.h (cwdstuff::set): Modify return value and arguments.
@@ -57,7 +63,7 @@
 	variables while issetuid.
 
 2004-05-08  Pierre Humblet <pierre.humblet@ieee.org>
-            Christopher Faylor  <cgf@timesys.com>
+	    Christopher Faylor  <cgf@timesys.com>
 
 	* syscalls.cc: Include environ.h.
 	(chroot): Set errno in case of path error.  Call getwinenv.
@@ -115,7 +121,7 @@
 	* path.cc (path_conv::check): Strip trailing dots and spaces and
 	return error if the final component had only dots and spaces.
 	(normalize_posix_path): Revert 2004-04-30.
-	(chdir): Do not check for trailing spaces. Do not set native_dir 
+	(chdir): Do not check for trailing spaces. Do not set native_dir
 	to c:\ for virtual devices. Pass only native_dir to cwd.set.
 	(cwdstuff::set): Assume posix_cwd is already normalized.
 

winsup/cygwin/cygheap.h

@@ -82,7 +82,7 @@ public:
     return p;
   }
   bool exists () {return !!m;}
-  void set (const char *posix, const char *native);
+  void set (const char *, const char *);
   size_t posix_length () const { return m->posix_pathlen; }
   const char *posix_path () const { return m->posix_path; }
   size_t native_length () const { return m->native_pathlen; }
@@ -217,12 +217,12 @@ struct cwdstuff
   char *win32;
   DWORD hash;
   muto *cwd_lock;
-  char *get (char *buf, int need_posix = 1, int with_chroot = 0, unsigned ulen = CYG_MAX_PATH);
+  char *get (char *, int = 1, int = 0, unsigned = CYG_MAX_PATH);
   DWORD get_hash ();
   void init ();
-  void fixup_after_exec (char *win32, char *posix, DWORD hash);
+  void fixup_after_exec (char *, char *, DWORD);
   bool get_initial ();
-  void set (const char *win32_cwd, const char *posix_cwd = NULL);
+  int set (const char *, const char *, bool);
 };
 
 #ifdef DEBUGGING

winsup/cygwin/cygthread.h

@@ -41,6 +41,7 @@ class cygthread
     (void) CloseHandle (h);
     h = NULL;
   }
+  DWORD tid () const {return id;}
 };
 
 #define cygself NULL

winsup/cygwin/fhandler_socket.cc

@@ -32,6 +32,7 @@
 #include "sigproc.h"
 #include "cygthread.h"
 #include "select.h"
+#include "wininfo.h"
 #include <unistd.h>
 
 extern bool fdsock (cygheap_fdmanip& fd, const device *, SOCKET soc);
@@ -1374,7 +1375,7 @@ fhandler_socket::ioctl (unsigned int cmd, void *p)
 	break;
       }
     case FIOASYNC:
-      res = WSAAsyncSelect (get_socket (), gethwnd (), WM_ASYNCIO,
+      res = WSAAsyncSelect (get_socket (), winmsg, WM_ASYNCIO,
 	      *(int *) p ? ASYNC_MASK : 0);
       syscall_printf ("Async I/O on socket %s",
 	      *(int *) p ? "started" : "cancelled");
@@ -1390,7 +1391,7 @@ fhandler_socket::ioctl (unsigned int cmd, void *p)
        * blocking mode
        */
       if (cmd == FIONBIO && *(int *) p == 0)
-	WSAAsyncSelect (get_socket (), gethwnd (), 0, 0);
+	WSAAsyncSelect (get_socket (), winmsg, 0, 0);
       res = ioctlsocket (get_socket (), cmd, (unsigned long *) p);
       if (res == SOCKET_ERROR)
 	  set_winsock_errno ();
@@ -1400,7 +1401,7 @@ fhandler_socket::ioctl (unsigned int cmd, void *p)
 			    *(int *) p ? "non" : "");
 	  /* Start AsyncSelect if async socket unblocked */
 	  if (*(int *) p && async_io ())
-	    WSAAsyncSelect (get_socket (), gethwnd (), WM_ASYNCIO, ASYNC_MASK);
+	    WSAAsyncSelect (get_socket (), winmsg, WM_ASYNCIO, ASYNC_MASK);
 
 	  set_nonblocking (*(int *) p);
 	}

winsup/cygwin/sync.cc

@@ -125,6 +125,16 @@ muto::release ()
 	 threads waiting for the lock, so trigger bruteforce.  */
       if (InterlockedDecrement (&waiters) >= 0)
 	(void) SetEvent (bruteforce); /* Wake up one of the waiting threads */
+      else if (*name == '!')
+	{
+	  CloseHandle (bruteforce);	/* If *name == '!' and there are no
+					   other waiters, then this is the
+					   last time this muto will ever be
+					   used, so close the handle. */
+#ifdef DEBUGGING
+	  bruteforce = NULL;
+#endif
+	}
     }
 
   return 1;	/* success. */

winsup/cygwin/sync.h

@@ -38,7 +38,6 @@ public:
   /* Return true if caller thread owns the lock. */
   int ismine () {return tid == GetCurrentThreadId ();}
   DWORD owner () {return tid;}
-  int unstable () {return !tid && (sync || waiters >= 0);}
   void reset () __attribute__ ((regparm (1)));
   bool acquired ();
   static void set_exiting_thread () {exiting_thread = GetCurrentThreadId ();}
@@ -59,4 +58,11 @@ extern muto muto_start;
   static muto __storage __attribute__((nocommon)) __attribute__((section(".data_cygwin_nocopy1"))); \
   __name = __storage.init (#__name); \
 })
+
+/* Use a statically allocated buffer as the storage for a muto */
+#define new_muto_name(__var, __name) \
+({ \
+  static muto __var##_storage __attribute__((nocommon)) __attribute__((section(".data_cygwin_nocopy1"))); \
+  __var = __var##_storage.init (__name); \
+})
 #endif /*_SYNC_H*/

winsup/cygwin/window.cc

@@ -24,14 +24,21 @@ details. */
 #include "perprocess.h"
 #include "security.h"
 #include "cygthread.h"
+#include "sync.h"
+static DWORD WINAPI winthread (VOID *);
+#include "wininfo.h"
 
-static NO_COPY UINT timer_active = 0;
+wininfo NO_COPY winmsg;
-static NO_COPY struct itimerval itv;
-static NO_COPY DWORD start_time;
-static NO_COPY HWND ourhwnd = NULL;
 
-static LRESULT CALLBACK
+muto NO_COPY *wininfo::lock;
-WndProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+
+wininfo::wininfo ()
+{
+  new_muto_name (lock, "!winlock");
+}
+
+int __stdcall
+wininfo::process (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 {
 #ifndef NOSTRACE
   strace.wm (uMsg, wParam, lParam);
@@ -50,9 +57,7 @@ WndProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 			itv.it_interval.tv_usec / 1000;
 	  KillTimer (hwnd, timer_active);
 	  if (!elapse)
-	    {
+	    timer_active = 0;
-	      timer_active = 0;
-	    }
 	  else
 	    {
 	      timer_active = SetTimer (hwnd, 1, elapse, NULL);
@@ -73,10 +78,15 @@ WndProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
     }
 }
 
-static HANDLE window_started;
+static LRESULT CALLBACK
+process_window_events (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+{
+  return winmsg.process (hwnd, uMsg, wParam, lParam);
+}
 
+/* Handle windows events.  Inherits ownership of the wininfo lock */
 static DWORD WINAPI
-Winmain (VOID *)
+winthread (VOID *arg)
 {
   MSG msg;
   WNDCLASS wc;
@@ -85,7 +95,7 @@ Winmain (VOID *)
   /* Register the window class for the main window. */
 
   wc.style = 0;
-  wc.lpfnWndProc = (WNDPROC) WndProc;
+  wc.lpfnWndProc = (WNDPROC) process_window_events;
   wc.cbClsExtra = 0;
   wc.cbWndExtra = 0;
   wc.hInstance = user_data->hmodule;
@@ -96,60 +106,64 @@ Winmain (VOID *)
   wc.lpszClassName = classname;
 
   if (!RegisterClass (&wc))
-    {
+    api_fatal ("cannot register window class, %E");
-      system_printf ("Cannot register window class, %E");
-      return FALSE;
-    }
 
+  wininfo *wi = (wininfo *) arg;
   /* Create hidden window. */
-  ourhwnd = CreateWindow (classname, classname, WS_POPUP, CW_USEDEFAULT,
+  wi->hwnd = CreateWindow (classname, classname, WS_POPUP, CW_USEDEFAULT,
-			  CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
+			   CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
-			  (HWND) NULL, (HMENU) NULL, user_data->hmodule,
+			   (HWND) NULL, (HMENU) NULL, user_data->hmodule,
-			  (LPVOID) NULL);
+			   (LPVOID) NULL);
+  if (!wi->hwnd)
+    api_fatal ("couldn't create window, %E");
+  wi->lock->release ();
 
-  SetEvent (window_started);
+  while (GetMessage (&msg, (HWND) arg, 0, 0) == TRUE)
-
-  if (!ourhwnd)
-    {
-      system_printf ("Cannot create window");
-      return FALSE;
-    }
-
-  /* Start the message loop. */
-
-  while (GetMessage (&msg, ourhwnd, 0, 0) == TRUE)
     DispatchMessage (&msg);
 
   return 0;
 }
 
-HWND __stdcall
+wininfo::operator
-gethwnd ()
+HWND ()
 {
-  if (ourhwnd != NULL)
+  if (hwnd)
-    return ourhwnd;
+    return hwnd;
 
-  cygthread *h;
+console_printf ("hwnd is NULL\n");
+  lock->acquire ();
+  if (hwnd)
+    {
+console_printf ("hwnd acquired %p\n", hwnd);
+      lock->release ();
+      return  hwnd;
+    }
 
-  window_started = CreateEvent (&sec_none_nih, TRUE, FALSE, NULL);
+console_printf ("creating window\n");
-  h = new cygthread (Winmain, NULL, "win");
+
+  cygthread *h = new cygthread (winthread, this, "win");
   h->SetThreadPriority (THREAD_PRIORITY_HIGHEST);
-  WaitForSingleObject (window_started, INFINITE);
-  CloseHandle (window_started);
   h->zap_h ();
-  return ourhwnd;
+  while (!hwnd)
+    low_priority_sleep (0);
+  return hwnd;
 }
 
 extern "C" int
 setitimer (int which, const struct itimerval *value, struct itimerval *oldvalue)
 {
-  UINT elapse;
-
   if (which != ITIMER_REAL)
     {
       set_errno (ENOSYS);
       return -1;
     }
+  return winmsg.setitimer (value, oldvalue);
+}
+
+/* FIXME: Very racy */
+int __stdcall
+wininfo::setitimer (const struct itimerval *value, struct itimerval *oldvalue)
+{
   /* Check if we will wrap */
   if (itv.it_value.tv_sec >= (long) (UINT_MAX / 1000))
     {
@@ -158,7 +172,7 @@ setitimer (int which, const struct itimerval *value, struct itimerval *oldvalue)
     }
   if (timer_active)
     {
-      KillTimer (gethwnd (), timer_active);
+      KillTimer (winmsg, timer_active);
       timer_active = 0;
     }
   if (oldvalue)
@@ -169,13 +183,13 @@ setitimer (int which, const struct itimerval *value, struct itimerval *oldvalue)
       return -1;
     }
   itv = *value;
-  elapse = itv.it_value.tv_sec * 1000 + itv.it_value.tv_usec / 1000;
+  UINT elapse = itv.it_value.tv_sec * 1000 + itv.it_value.tv_usec / 1000;
   if (elapse == 0)
     if (itv.it_value.tv_usec)
       elapse = 1;
     else
       return 0;
-  if (!(timer_active = SetTimer (gethwnd (), 1, elapse, NULL)))
+  if (!(timer_active = SetTimer (winmsg, 1, elapse, NULL)))
     {
       __seterrno ();
       return -1;
@@ -187,8 +201,6 @@ setitimer (int which, const struct itimerval *value, struct itimerval *oldvalue)
 extern "C" int
 getitimer (int which, struct itimerval *value)
 {
-  UINT elapse, val;
-
   if (which != ITIMER_REAL)
     {
       set_errno (EINVAL);
@@ -199,6 +211,13 @@ getitimer (int which, struct itimerval *value)
       set_errno (EFAULT);
       return -1;
     }
+  return winmsg.getitimer (value);
+}
+
+/* FIXME: racy */
+int __stdcall
+wininfo::getitimer (struct itimerval *value)
+{
   *value = itv;
   if (!timer_active)
     {
@@ -206,6 +225,9 @@ getitimer (int which, struct itimerval *value)
       value->it_value.tv_usec = 0;
       return 0;
     }
+
+  UINT elapse, val;
+
   elapse = GetTickCount () - start_time;
   val = itv.it_value.tv_sec * 1000 + itv.it_value.tv_usec / 1000;
   val -= elapse;

winsup/cygwin/winsup.h

@@ -217,8 +217,6 @@ void events_terminate (void);
 
 void __stdcall close_all_files ();
 
-/* Invisible window initialization/termination. */
-HWND __stdcall gethwnd (void);
 /* Check if running in a visible window station. */
 extern bool has_visible_window_station (void);