* cygthread.h (cygthread::terminate_thread): Reflect return value.

* cygthread.cc (cygthread::detach): Be more careful about ensuring that sigwait
is properly waited for to avoid later missynchronization.
(cygthread::terminate_thread): Return true if thread was actually terminated
and all handles were closed.
* fhandler_base.cc (fhandler_base::raw_read): Use signal_read_state rather than
raw calls to win32 api.
(fhandler_base::read): Ditto.
* fhandler.h (fhandler_pipe::fixup_after_exec): Use method to create read_state
signalling.
(fhandler_pipe::create): Ditto.
* Makefile.in: Make some more files -fomit-frame-pointer.

winsup/cygwin/ChangeLog

@@ -1,3 +1,19 @@
+2005-02-03  Christopher Faylor  <cgf@timesys.com>
+
+	* cygthread.h (cygthread::terminate_thread): Reflect return value.
+	* cygthread.cc (cygthread::detach): Be more careful about ensuring that
+	sigwait is properly waited for to avoid later missynchronization.
+	(cygthread::terminate_thread): Return true if thread was actually
+	terminated and all handles were closed.
+	* fhandler_base.cc (fhandler_base::raw_read): Use signal_read_state
+	rather than raw calls to win32 api.
+	(fhandler_base::read): Ditto.
+	* fhandler.h (fhandler_pipe::fixup_after_exec): Use method to create
+	read_state signalling.
+	(fhandler_pipe::create): Ditto.
+
+	* Makefile.in: Make some more files -fomit-frame-pointer.
+
 2005-02-02  Corinna Vinschen  <corinna@vinschen.de>
 
 	* fhandler.h (fhandler_base::ftruncate): Define new virtual method.

winsup/cygwin/Makefile.in

@@ -250,9 +250,11 @@ fhandler_virtual_CFLAGS:=-fomit-frame-pointer
 fhandler_windows_CFLAGS:=-fomit-frame-pointer
 fhandler_zero_CFLAGS:=-fomit-frame-pointer
 flock_CFLAGS:=-fomit-frame-pointer
+grp_CFLAGS:=-fomit-frame-pointer
 malloc_CFLAGS:=-fomit-frame-pointer
 malloc_wrapper_CFLAGS:=-fomit-frame-pointer
 miscfuncs_CFLAGS:=-fomit-frame-pointer
+passwd_CFLAGS:=-fomit-frame-pointer
 regcomp_CFLAGS=-fomit-frame-pointer
 regerror_CFLAGS=-fomit-frame-pointer
 regexec_CFLAGS=-fomit-frame-pointer

winsup/cygwin/cygthread.cc

@@ -243,9 +243,10 @@ cygthread::release (bool nuke_h)
 }
 
 /* Forcibly terminate a thread. */
-void
+bool
 cygthread::terminate_thread ()
 {
+  bool terminated = true;
   /* FIXME: The if (!inuse) stuff below should be handled better.  The
      problem is that terminate_thread could be called while a thread
      is terminating and either the thread could be handling its own
@@ -264,19 +265,19 @@ cygthread::terminate_thread ()
     low_priority_sleep (0);
 
   if (!inuse)
-    return;
+    return false;
 
   (void) TerminateThread (h, 0);
   (void) WaitForSingleObject (h, INFINITE);
   if (ev)
-    WaitForSingleObject (ev, 0);
+    terminated = WaitForSingleObject (ev, 0) != WAIT_OBJECT_0;
   if (!inuse || exiting)
-    return;
+    return false;
 
   CloseHandle (h);
 
   if (!inuse)
-    return;
+    return false;
 
   MEMORY_BASIC_INFORMATION m;
   memset (&m, 0, sizeof (m));
@@ -299,6 +300,7 @@ cygthread::terminate_thread ()
 #endif
       release (true);
     }
+  return terminated;
 }
 
 /* Detach the cygthread from the current thread.  Note that the
@@ -309,6 +311,7 @@ bool
 cygthread::detach (HANDLE sigwait)
 {
   bool signalled = false;
+  bool terminated = false;
   if (!inuse)
     system_printf ("called detach but inuse %d, thread %p?", inuse, id);
   else
@@ -327,22 +330,27 @@ cygthread::detach (HANDLE sigwait)
 	    system_printf ("WFSO sigwait %p failed, res %u, %E", sigwait, res);
 	  res = WaitForMultipleObjects (2, w4, FALSE, INFINITE);
 	  if (res == WAIT_OBJECT_0)
-	    /* nothing */;
+	    signalled = false;
-	  else if (WaitForSingleObject (sigwait, 0) == WAIT_OBJECT_0)
+	  else if (res != WAIT_OBJECT_0 + 1)
-	    res = WaitForSingleObject (*this, INFINITE);
+	    api_fatal ("WFMO failed waiting for cygthread '%s'", __name);
-	  else if ((res = WaitForSingleObject (*this, 0)) != WAIT_OBJECT_0)
+	  else if ((res = WaitForSingleObject (*this, INFINITE)) == WAIT_OBJECT_0)
+	    signalled = false;
+	  else
 	    {
-	      signalled = true;
+	      terminated = true;
-	      terminate_thread ();
+	      signalled = terminate_thread ();
-	      set_sig_errno (EINTR);	/* caller should be dealing with return
-					   values. */
 	    }
+	  if (WaitForSingleObject (sigwait, 0) == WAIT_OBJECT_0)
+	    signalled = false;
+	  else if (signalled)
+	    set_sig_errno (EINTR);    /* caller should be dealing with return
+					 values. */
 	}
 
       thread_printf ("%s returns %d, id %p", sigwait ? "WFMO" : "WFSO",
 		     res, id);
 
-      if (signalled)
+      if (terminated)
 	/* already handled */;
       else if (is_freerange)
 	{

winsup/cygwin/cygthread.h

@@ -27,7 +27,7 @@ class cygthread
   bool is_freerange;
   static bool exiting;
  public:
-  void terminate_thread ();
+  bool terminate_thread ();
   static DWORD WINAPI stub (VOID *);
   static DWORD WINAPI simplestub (VOID *);
   static DWORD main_thread_id;

winsup/cygwin/fhandler.cc

@@ -231,14 +231,9 @@ fhandler_base::raw_read (void *ptr, size_t& ulen)
       h = GetCurrentThread ();
       prio = GetThreadPriority (h);
       (void) SetThreadPriority (h, THREAD_PRIORITY_TIME_CRITICAL);
-      SetEvent (read_state);
+      signal_read_state (1);
     }
   BOOL res = ReadFile (get_handle (), ptr, len, (DWORD *) &ulen, 0);
-  if (read_state)
-    {
-      SetEvent (read_state);
-      (void) SetThreadPriority (h, prio);
-    }
   if (!res)
     {
       /* Some errors are not really errors.  Detect such cases here.  */
@@ -275,6 +270,11 @@ fhandler_base::raw_read (void *ptr, size_t& ulen)
 	  break;
 	}
     }
+  if (read_state)
+    {
+      signal_read_state (1);
+      (void) SetThreadPriority (h, prio);
+    }
 #undef bytes_read
 }
 
@@ -705,8 +705,8 @@ fhandler_base::read (void *in_ptr, size_t& len)
       goto out;
     }
 
-  raw_read (ptr + copied_chars, len);
   need_signal = false;
+  raw_read (ptr + copied_chars, len);
   if (!copied_chars)
     /* nothing */;
   else if ((ssize_t) len > 0)
@@ -775,7 +775,7 @@ fhandler_base::read (void *in_ptr, size_t& len)
 
 out:
   if (need_signal)
-    SetEvent (read_state);
+    signal_read_state (2);
 
   debug_printf ("returning %d, %s mode", len, rbinary () ? "binary" : "text");
   return;

winsup/cygwin/fhandler.h

@@ -193,6 +193,15 @@ class fhandler_base
   virtual void fixup_before_fork_exec (DWORD) {}
   virtual void fixup_after_fork (HANDLE);
   virtual void fixup_after_exec () {}
+  void create_read_state (LONG n)
+  {
+    read_state = CreateSemaphore (&sec_none_nih, 0, n, NULL);
+  }
+
+  void signal_read_state (LONG n)
+  {
+    (void) ReleaseSemaphore (read_state, n, NULL);
+  }
 
   void set_fs_flags (DWORD flags) { fs_flags = flags; }
   bool get_fs_flags (DWORD flagval = UINT32_MAX)

winsup/cygwin/pipe.cc

@@ -177,7 +177,7 @@ fhandler_pipe::fixup_after_exec ()
 {
   if (read_state)
     {
-      read_state = CreateEvent (&sec_none_nih, FALSE, FALSE, NULL);
+      create_read_state (2);
       ProtectHandle (read_state);
     }
 }
@@ -410,7 +410,7 @@ fhandler_pipe::create (fhandler_pipe *fhs[2], unsigned psize, int mode, bool fif
 	 fhs[1]->close_on_exec (true);
        }
 
-      fhs[0]->read_state = CreateEvent (&sec_none_nih, FALSE, FALSE, NULL);
+      fhs[0]->create_read_state (2);
       fhs[0]->need_fork_fixup (true);
       ProtectHandle1 (fhs[0]->read_state, read_state);