* cygheap.h (class process_lock): New class.

* dtable.h (class dtable): Add class process_lock as a friend.
* dcrt0.cc (get_exit_lock): Delete.
(do_exit): Use process_lock class instead of get_exit_lock.
* exceptions.cc (signal_exit): Ditto.
* pinfo.cc (pinfo::exit): Ditto.
(_pinfo::commune_process): Set process lock around this whole function.
(_pinfo::commune_request): Use process_lock rather than myself.lock.
* pinfo.h (pinfo::_lock): Delete.
(pinfo::initialize_lock): Delete.
(pinfo::lock): Delete.
(pinfo::unlock): Delete.
* winsup.h (get_exit_lock): Delete declaration.

8 files changed, 49 insertions, 23 deletions

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index d5711b3..77b6dec 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,20 @@
+2005-10-03  Christopher Faylor  <cgf@timesys.com>
+
+	* cygheap.h (class process_lock): New class.
+	* dtable.h (class dtable): Add class process_lock as a friend.
+	* dcrt0.cc (get_exit_lock): Delete.
+	(do_exit): Use process_lock class instead of get_exit_lock.
+	* exceptions.cc (signal_exit): Ditto.
+	* pinfo.cc (pinfo::exit): Ditto.
+	(_pinfo::commune_process): Set process lock around this whole function.
+	(_pinfo::commune_request): Use process_lock rather than myself.lock.
+	* pinfo.h (pinfo::_lock): Delete.
+	(pinfo::initialize_lock): Delete.
+	(pinfo::lock): Delete.
+	(pinfo::unlock): Delete.
+	* winsup.h (get_exit_lock): Delete declaration.
+	
+
 2005-10-03  Corinna Vinschen  <corinna@vinschen.de>
 
 	* uname.cc (uname): Disable use of GetNativeSystemInfo.
diff --git a/winsup/cygwin/cygheap.h b/winsup/cygwin/cygheap.h
index e5ce58f..059e01d 100644
--- a/winsup/cygwin/cygheap.h
+++ b/winsup/cygwin/cygheap.h
@@ -415,6 +415,27 @@ class cygheap_fdenum : public cygheap_fdmanip
   }
 };
 
+class process_lock
+{
+  bool skip_unlock;
+public:
+  process_lock (bool exiting = false)
+  {
+    cygheap->fdtab.lock ();
+    skip_unlock = exiting;
+    if (exiting && exit_state < ES_SET_MUTO)
+      {
+	exit_state = ES_SET_MUTO;
+	muto::set_exiting_thread ();
+      }
+  }
+  ~process_lock ()
+  {
+    if (!skip_unlock)
+      cygheap->fdtab.unlock ();
+  }
+};
+
 class child_info;
 void __stdcall cygheap_fixup_in_child (bool);
 extern "C" {
diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc
index 48a7b9f..6f82e12 100644
--- a/winsup/cygwin/dcrt0.cc
+++ b/winsup/cygwin/dcrt0.cc
@@ -1021,7 +1021,7 @@ do_exit (int status)
     }
 #endif
 
-  get_exit_lock ();
+  process_lock until_exit (true);
 
   if (exit_state < ES_GLOBAL_DTORS)
     {
@@ -1138,17 +1138,6 @@ _exit (int n)
   do_exit (((DWORD) n & 0xff) << 8);
 }
 
-void
-get_exit_lock ()
-{
-  myself.lock ();
-  if (exit_state < ES_SET_MUTO)
-    {
-      exit_state = ES_SET_MUTO;
-      muto::set_exiting_thread ();
-    }
-}
-
 extern "C" void
 __api_fatal (const char *fmt, ...)
 {
diff --git a/winsup/cygwin/dtable.h b/winsup/cygwin/dtable.h
index 202e288..b71b3f1 100644
--- a/winsup/cygwin/dtable.h
+++ b/winsup/cygwin/dtable.h
@@ -89,6 +89,7 @@ public:
   friend class cygheap_fdget;
   friend class cygheap_fdnew;
   friend class cygheap_fdenum;
+  friend class process_lock;
 };
 
 fhandler_base *build_fh_dev (const device&, const char * = NULL);
diff --git a/winsup/cygwin/exceptions.cc b/winsup/cygwin/exceptions.cc
index 93a3e80..b131523 100644
--- a/winsup/cygwin/exceptions.cc
+++ b/winsup/cygwin/exceptions.cc
@@ -26,6 +26,10 @@ details. */
 #include "shared_info.h"
 #include "perprocess.h"
 #include "security.h"
+#include "path.h"
+#include "fhandler.h"
+#include "dtable.h"
+#include "cygheap.h"
 
 #define CALL_HANDLER_RETRY 20
 
@@ -1179,7 +1183,7 @@ signal_exit (int rc)
       TerminateProcess (hExeced, sigExeced = rc);
     }
 
-  get_exit_lock ();
+  process_lock until_exit (true);
   if (hExeced || exit_state)
     myself.exit (rc);
 
diff --git a/winsup/cygwin/pinfo.cc b/winsup/cygwin/pinfo.cc
index e77a4e6..5df86c7 100644
--- a/winsup/cygwin/pinfo.cc
+++ b/winsup/cygwin/pinfo.cc
@@ -59,7 +59,6 @@ set_myself (HANDLE h)
 #endif
     strace.hello ();
   debug_printf ("myself->dwProcessId %u", myself->dwProcessId);
-  myself.initialize_lock ();
   if (h)
     {
       /* here if execed */
@@ -140,7 +139,7 @@ pinfo::zap_cwd ()
 void
 pinfo::exit (DWORD n)
 {
-  get_exit_lock ();
+  process_lock until_exit ();
   cygthread::terminate ();
   if (n != EXITCODE_NOSET)
     self->exitcode = EXITCODE_SET | n;/* We're really exiting.  Record the UNIX exit code. */
@@ -390,6 +389,8 @@ _pinfo::commune_process (siginfo_t& si)
   if (process_sync)		// FIXME: this test shouldn't be necessary
     ProtectHandle (process_sync);
 
+  process_lock now (false);
+
   switch (si._si_commune._si_code)
     {
     case PICOM_CMDLINE:
@@ -586,7 +587,7 @@ _pinfo::commune_request (__uint32_t code, ...)
     break;
     }
 
-  myself.lock ();
+  process_lock now ();
   locked = true;
   char name_buf[CYG_MAX_PATH];
   request_sync = CreateSemaphore (&sec_none_nih, 0, LONG_MAX,
@@ -665,8 +666,6 @@ out:
       ReleaseSemaphore (request_sync, 1, &res);
       ForceCloseHandle (request_sync);
     }
-  if (locked)
-    myself.unlock ();
   if (hp)
     CloseHandle (hp);
   if (fromthem)
diff --git a/winsup/cygwin/pinfo.h b/winsup/cygwin/pinfo.h
index 1462e5f..0c7a264 100644
--- a/winsup/cygwin/pinfo.h
+++ b/winsup/cygwin/pinfo.h
@@ -149,7 +149,6 @@ class pinfo
 public:
   HANDLE rd_proc_pipe;
   HANDLE hProcess;
-  CRITICAL_SECTION _lock;
   bool waiter_ready;
   class cygthread *wait_thread;
   void init (pid_t, DWORD, HANDLE) __attribute__ ((regparm(3)));
@@ -166,9 +165,6 @@ public:
   }
   void exit (DWORD n) __attribute__ ((noreturn, regparm(2)));
   void maybe_set_exit_code_from_windows () __attribute__ ((regparm(1)));
-  void initialize_lock () {InitializeCriticalSection (&_lock);}
-  void lock () {EnterCriticalSection (&_lock);}
-  void unlock () {LeaveCriticalSection (&_lock);}
   _pinfo *operator -> () const {return procinfo;}
   int operator == (pinfo *x) const {return x->procinfo == procinfo;}
   int operator == (pinfo &x) const {return x.procinfo == procinfo;}
diff --git a/winsup/cygwin/winsup.h b/winsup/cygwin/winsup.h
index 004f5b9..d31dd9a 100644
--- a/winsup/cygwin/winsup.h
+++ b/winsup/cygwin/winsup.h
@@ -203,7 +203,6 @@ enum exit_states
 
 extern exit_states exit_state;
 void __stdcall do_exit (int) __attribute__ ((regparm (1), noreturn));
-void __stdcall get_exit_lock ();
 
 /* UID/GID */
 void uinfo_init ();