* exceptions.cc (unused_sig_wrapper): Eliminate unused parameter to asm.

* external.cc (cygwin_internal): Change CW_STRACE_ON to CW_STRACE_TOGGLE.
* strace.cc (strace::hello): Toggle strace on and off.
* sync.cc (muto::init): Renamed from constructor.
* sync.h (muto::new): Delete.
(muto::delete): Ditto.
(new_muto): Simplify.  Use muto.init for nearly everything.
* uinfo.cc (uinfo_init): Avoid closing a NULL handle.
* include/sys/cygwin.h (cygwin_getinfo_types): Rename CW_STRACE_OFF to
CW_STRACE_TOGGLE.  Delete CW_STRACE_OFF.
* include/sys/strace.h (strace): Add "inited" field.

winsup/cygwin/ChangeLog

@@ -1,3 +1,19 @@
+2002-02-14  Christopher Faylor  <cgf@redhat.com>
+
+	* exceptions.cc (unused_sig_wrapper): Eliminate unused parameter to
+	asm.
+	* external.cc (cygwin_internal): Change CW_STRACE_ON to
+	CW_STRACE_TOGGLE.
+	* strace.cc (strace::hello): Toggle strace on and off.
+	* sync.cc (muto::init): Renamed from constructor.
+	* sync.h (muto::new): Delete.
+	(muto::delete): Ditto.
+	(new_muto): Simplify.  Use muto.init for nearly everything.
+	* uinfo.cc (uinfo_init): Avoid closing a NULL handle.
+	* include/sys/cygwin.h (cygwin_getinfo_types): Rename CW_STRACE_OFF to
+	CW_STRACE_TOGGLE.  Delete CW_STRACE_OFF.
+	* include/sys/strace.h (strace): Add "inited" field.
+
 2001-02-12  Corinna Vinschen  <corinna@vinschen.de>
 
 	* include/cygwin/acl.h: Fix definition of aclent_t.

winsup/cygwin/exceptions.cc

@@ -1220,14 +1220,14 @@ _sigdelayed0:								\n\
 	pushl	%%ecx							\n\
 	pushl	%%ebx							\n\
 	pushl	%%eax							\n\
-	pushl	%7			# saved errno			\n\
+	pushl	%6			# saved errno			\n\
 	pushl	%3			# oldmask			\n\
 	pushl	%4			# signal argument		\n\
 	pushl	$_sigreturn						\n\
 									\n\
 	call	_reset_signal_arrived@0					\n\
 	pushl	%5			# signal number			\n\
-	pushl	%8			# newmask			\n\
+	pushl	%7			# newmask			\n\
 	movl	$0,%0			# zero the signal number as a	\n\
 					# flag to the signal handler thread\n\
 					# that it is ok to set up sigsave\n\
@@ -1238,7 +1238,7 @@ _sigdelayed0:								\n\
 __no_sig_end:								\n\
 " : "=m" (sigsave.sig) : "m" (&_impure_ptr->_errno),
   "g" (sigsave.retaddr), "g" (sigsave.oldmask), "g" (sigsave.sig),
-    "g" (sigsave.func), "o" (pid_offset), "g" (sigsave.saved_errno), "g" (sigsave.newmask)
+    "g" (sigsave.func), "g" (sigsave.saved_errno), "g" (sigsave.newmask)
 );
 }
 }

winsup/cygwin/external.cc

@@ -206,7 +206,7 @@ cygwin_internal (cygwin_getinfo_types t, ...)
 #	  undef cr
 	}
 
-      case CW_STRACE_ON:
+      case CW_STRACE_TOGGLE:
 	{
 	  pid_t pid = va_arg (arg, pid_t);
 	  pinfo p (pid);
@@ -221,6 +221,7 @@ cygwin_internal (cygwin_getinfo_types t, ...)
 	      return (DWORD) -1;
 	    }
 	}
+
       case CW_CYGWIN_PID_TO_WINPID:
 	{
 	  pinfo p (va_arg (arg, pid_t));

winsup/cygwin/grp.cc

@@ -145,7 +145,7 @@ read_etc_group ()
 
   strncpy (group_name, "Administrators", sizeof (group_name));
 
-  static NO_COPY group_lock here;
+  static NO_COPY group_lock here = group_lock();
   if (cygwin_finished_initializing)
     here.arm ();
 

winsup/cygwin/include/sys/cygwin.h

@@ -67,8 +67,7 @@ typedef enum
     CW_GET_CYGDRIVE_INFO,
     CW_SET_CYGWIN_REGISTRY_NAME,
     CW_GET_CYGWIN_REGISTRY_NAME,
-    CW_STRACE_ON,
+    CW_STRACE_TOGGLE,
-    CW_STRACE_OFF,
     CW_CYGWIN_PID_TO_WINPID
   } cygwin_getinfo_types;
 

winsup/cygwin/include/sys/strace.h

@@ -43,6 +43,7 @@ public:
   int active;
   int lmicrosec;
   int execing;
+  int inited;
   strace() : version(1) {}
   void hello ();
   void prntf (unsigned, const char *func, const char *, ...) /*__attribute__ ((regparm(3)))*/;

winsup/cygwin/select.cc

@@ -452,7 +452,7 @@ peek_pipe (select_record *s, bool from_select)
       n = -1;
     }
   else if (!n || !guard_mutex)
-    /* no guard mutex or nothing to read fromt he pipe. */;
+    /* no guard mutex or nothing to read from the pipe. */;
   else if (WaitForSingleObject (guard_mutex, 0) != WAIT_OBJECT_0)
     {
       select_printf ("%s, couldn't get mutex %p, %E", fh->get_name (),

winsup/cygwin/sigproc.cc

@@ -1182,7 +1182,7 @@ wait_sig (VOID *)
 		  /* just forcing the loop */
 		  break;
 
-		/* Internal signal to force a flush of strace data to disk. */
+		/* Internal signal to turn on stracing. */
 		case __SIGSTRACE:
 		  strace.hello ();
 		  break;

winsup/cygwin/strace.cc

@@ -34,6 +34,13 @@ void
 strace::hello()
 {
   char buf[30];
+
+  if (inited)
+    {
+      active ^= 1;
+      return;
+    }
+
   __small_sprintf (buf, "cYg%8x %x", _STRACE_INTERFACE_ACTIVATE_ADDR, &active);
   OutputDebugString (buf);
 

winsup/cygwin/sync.cc

@@ -28,18 +28,24 @@ muto NO_COPY muto_start;
 #undef WaitForSingleObject
 
 /* Constructor */
-muto::muto (int inh, const char *s) : sync (0), visits(0), waiters(-1), tid (0), next (NULL)
+muto *
+muto::init (int inh, const char *s)
 {
+  waiters = -1;
   /* Create event which is used in the fallback case when blocking is necessary */
-  if (!(bruteforce = CreateEvent (inh ? &sec_all_nih : &sec_none_nih, FALSE, FALSE, name)))
+  if (!(bruteforce = CreateEvent (inh ? &sec_all_nih : &sec_none_nih, FALSE, FALSE, NULL)))
     {
       DWORD oerr = GetLastError ();
       SetLastError (oerr);
-      return;
+      return NULL;
     }
   name = s;
+  next = muto_start.next;
+  muto_start.next = this;
+  return this;
 }
 
+#if 0 /* FIXME: Do we need this? mutos aren't destroyed until process exit */
 /* Destructor (racy?) */
 muto::~muto ()
 {
@@ -52,6 +58,7 @@ muto::~muto ()
   if (h)
     CloseHandle (h);
 }
+#endif
 
 /* Acquire the lock.  Argument is the number of milliseconds to wait for
    the lock.  Multiple visits from the same thread are allowed and should

winsup/cygwin/sync.h

@@ -23,17 +23,13 @@ public:
   class muto *next;
   const char *name;
 
-  muto() {}
   /* The real constructor. */
-  muto(int inh, const char *name);
+  muto *init(int inh, const char *name) __attribute__ ((regparm (3)));
 
-  void *operator new (size_t, void *p) {return p;}
+#if 0	/* FIXME: See comment in sync.cc */
-  void *operator new (size_t) {return ::new muto; }
+  ~muto ()
-  void operator delete (void *) {;} /* can't handle allocated mutos
+#endif
-					currently */
+  int acquire (DWORD ms = INFINITE) __attribute__ ((regparm (1))); /* Acquire the lock. */
-
-  ~muto ();
-  int acquire (DWORD ms = INFINITE) __attribute__ ((regparm(1))); /* Acquire the lock. */
   int release ();		     /* Release the lock. */
 
   /* Return true if caller thread owns the lock. */
@@ -48,9 +44,6 @@ extern muto muto_start;
 /* Use a statically allocated buffer as the storage for a muto */
 #define new_muto(__inh, __name) \
 ({ \
-  static volatile __attribute__((section(".data_cygwin_nocopy"))) muto __mbuf; \
+  static muto __mbuf __attribute__((section(".data_cygwin_nocopy"))); \
-  (void) new ((void *) &__mbuf) muto (__inh, __name); \
+  __mbuf.init (__inh, __name); \
-  __mbuf.next = muto_start.next; \
-  muto_start.next = (muto *) &__mbuf; \
-  (muto *) &__mbuf; \
 })

winsup/cygwin/uinfo.cc

@@ -244,7 +244,7 @@ uinfo_init ()
      Setting `impersonated' to TRUE seems to be wrong but it
      isn't. Impersonated is thought as "Current User and `token'
      are coincident". See seteuid() for the mechanism behind that. */
-  if (cygheap->user.token != INVALID_HANDLE_VALUE)
+  if (cygheap->user.token != INVALID_HANDLE_VALUE && cygheap->user.token != NULL)
     CloseHandle (cygheap->user.token);
   cygheap->user.token = INVALID_HANDLE_VALUE;
   cygheap->user.impersonated = TRUE;