* pinfo.cc: Use autoloaded ToolHelp functions throughout for Win9x.

* autoload.cc: Autoload ToolHelp functions.

winsup/cygwin/ChangeLog

@@ -1,3 +1,8 @@
+Mon Jun 11 13:55:04 2001  Christopher Faylor <cgf@cygnus.com>
+
+	* pinfo.cc: Use autoloaded ToolHelp functions throughout for Win9x.
+	* autoload.cc: Autoload ToolHelp functions.
+
 Mon Jun 11 11:18:56 2001  Christopher Faylor <cgf@cygnus.com>
 
 	* path.cc (chdir): Fix call to path_conv constructor so that it REALLY

winsup/cygwin/autoload.cc

@@ -475,6 +475,9 @@ LoadDLLfunc (CoCreateInstance, 20, ole32)
 
 LoadDLLfuncEx (SignalObjectAndWait, 16, kernel32, 1)
 LoadDLLfuncEx (CancelIo, 4, kernel32, 1)
+LoadDLLfuncEx (Process32First, 8, kernel32, 1)
+LoadDLLfuncEx (Process32Next, 8, kernel32, 1)
+LoadDLLfuncEx (CreateToolhelp32Snapshot, 8, kernel32, 1)
 
 LoadDLLfuncEx (waveOutGetNumDevs, 0, winmm, 1)
 LoadDLLfuncEx (waveOutOpen, 24, winmm, 1)

winsup/cygwin/pinfo.cc

@@ -282,14 +282,6 @@ cygwin_winpid_to_pid (int winpid)
 
 #include <tlhelp32.h>
 
-typedef HANDLE (WINAPI * CREATESNAPSHOT) (DWORD, DWORD);
-typedef BOOL (WINAPI * PROCESSWALK) (HANDLE, LPPROCESSENTRY32);
-typedef BOOL (WINAPI * CLOSESNAPSHOT) (HANDLE);
-
-static NO_COPY CREATESNAPSHOT myCreateToolhelp32Snapshot = NULL;
-static NO_COPY PROCESSWALK myProcess32First = NULL;
-static NO_COPY PROCESSWALK myProcess32Next  = NULL;
-
 #define slop_pidlist 200
 #define size_pidlist(i) (sizeof (pidlist[0]) * ((i) + 1))
 #define size_pinfolist(i) (sizeof (pinfolist[0]) * ((i) + 1))
@@ -369,7 +361,7 @@ winpids::enum9x (bool winpid)
 {
   DWORD nelem = 0;
 
-  HANDLE h = myCreateToolhelp32Snapshot (TH32CS_SNAPPROCESS, 0);
+  HANDLE h = CreateToolhelp32Snapshot (TH32CS_SNAPPROCESS, 0);
   if (!h)
     {
       system_printf ("Couldn't create process snapshot, %E");
@@ -379,13 +371,13 @@ winpids::enum9x (bool winpid)
   PROCESSENTRY32 proc;
   proc.dwSize = sizeof (proc);
 
-  if (myProcess32First (h, &proc))
+  if (Process32First (h, &proc))
     do
       {
 	if (proc.th32ProcessID)
 	  add (nelem, winpid, proc.th32ProcessID);
       }
-    while (myProcess32Next (h, &proc));
+    while (Process32Next (h, &proc));
 
   CloseHandle (h);
   return nelem;
@@ -401,26 +393,10 @@ winpids::init (bool winpid)
 DWORD
 winpids::enum_init (bool winpid)
 {
-  HINSTANCE h;
   if (os_being_run == winNT)
     enum_processes = &winpids::enumNT;
   else
-    {
-      h = GetModuleHandle ("kernel32.dll");
-      myCreateToolhelp32Snapshot = (CREATESNAPSHOT)
-		  GetProcAddress(h, "CreateToolhelp32Snapshot");
-      myProcess32First = (PROCESSWALK)
-	      GetProcAddress (h, "Process32First");
-      myProcess32Next  = (PROCESSWALK)
-	      GetProcAddress (h, "Process32Next");
-      if (!myCreateToolhelp32Snapshot || !myProcess32First || !myProcess32Next)
-	{
-	  system_printf ("Couldn't find toolhelp processes, %E");
-	  return 0;
-	}
-
     enum_processes = &winpids::enum9x;
-    }
 
   return (this->*enum_processes) (winpid);
 }

winsup/cygwin/sigproc.cc

@@ -46,7 +46,7 @@ details. */
 
 #define no_signals_available() (!hwait_sig || !sig_loop_wait)
 
-#define ZOMBIEMAX	((int) (sizeof (zombies) / sizeof (zombies[0])))
+#define ZOMBIEMAX	((int) (sizeof (zombies) / sizeof (zombies[0])) - 1)
 
 /*
  * Global variables
@@ -300,13 +300,12 @@ proc_subproc (DWORD what, DWORD val)
 
       sigproc_printf ("pid %d[%d] terminated, handle %p, nchildren %d, nzombies %d",
 		  pchildren[val]->pid, val, hchildren[val], nchildren, nzombies);
-      if (nzombies >= ZOMBIEMAX)
+
-	sigproc_printf ("Hit zombie maximum %d", nzombies);
+      int thiszombie;
-      else
+      thiszombie = nzombies;
-	{
       zombies[nzombies] = pchildren[val];	// Add to zombie array
       zombies[nzombies++]->process_state = PID_ZOMBIE;// Walking dead
-	}
+
       sigproc_printf ("removing [%d], pid %d, handle %p, nchildren %d",
 		      val, pchildren[val]->pid, hchildren[val], nchildren);
       if ((int) val < --nchildren)
@@ -314,6 +313,18 @@ proc_subproc (DWORD what, DWORD val)
 	  hchildren[val] = hchildren[nchildren];
 	  pchildren[val] = pchildren[nchildren];
 	}
+
+      /* See if we should care about the this terminated process.  If we've
+	 filled up our table or if we're ignoring SIGCHLD, then we immediately
+	 remove the process and move on. Otherwise, this process becomes a zombie
+	 which must be reaped by a wait() call. */
+      if (nzombies >= ZOMBIEMAX
+	  || myself->getsig (SIGCHLD).sa_handler == (void *) SIG_IGN)
+	{
+	  sigproc_printf ("automatically removing zombie %d", thiszombie);
+	  remove_zombie (thiszombie);
+	}
+
       /* Don't scan the wait queue yet.  Caller will send SIGCHLD to this process.
 	 This will cause an eventual scan of waiters. */
       break;