This commit was manufactured by cvs2svn to create branch 'gh'.github/gh gh

Sprout from master 2000-08-28 17:45:56 UTC Jeff Johnston <jjohnstn@redhat.com> '' Delete: COPYING COPYING.LIB ChangeLog MAINTAINERS Makefile.in README README-maintainer-mode config-ml.in config.guess config.if config.sub config/ChangeLog config/acinclude.m4 config/mh-a68bsd config/mh-aix386 config/mh-apollo68 config/mh-armpic config/mh-cxux config/mh-cygwin config/mh-decstation config/mh-delta88 config/mh-dgux config/mh-dgux386 config/mh-djgpp config/mh-elfalphapic config/mh-hp300 config/mh-hpux config/mh-hpux8 config/mh-i370pic config/mh-ia64pic config/mh-interix config/mh-irix4 config/mh-irix5 config/mh-irix6 config/mh-lynxos config/mh-lynxrs6k config/mh-m68kpic config/mh-mingw32 config/mh-ncr3000 config/mh-ncrsvr43 config/mh-necv4 config/mh-openedition config/mh-papic config/mh-ppcpic config/mh-riscos config/mh-sco config/mh-solaris config/mh-sparcpic config/mh-sun3 config/mh-sysv config/mh-sysv4 config/mh-sysv5 config/mh-vaxult2 config/mh-x86pic config/mpw-mh-mpw 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libgloss/libnosys/write.c libgloss/lseek.c libgloss/m32r/Makefile.in libgloss/m32r/chmod.c libgloss/m32r/close.c libgloss/m32r/configure libgloss/m32r/configure.in libgloss/m32r/crt0.S libgloss/m32r/eit.h libgloss/m32r/eva-stub.ld libgloss/m32r/eva.ld libgloss/m32r/exit.c libgloss/m32r/fstat.c libgloss/m32r/getpid.c libgloss/m32r/isatty.c libgloss/m32r/kill.c libgloss/m32r/lseek.c libgloss/m32r/m32r-lib.c libgloss/m32r/mon.specs libgloss/m32r/open.c libgloss/m32r/raise.c libgloss/m32r/read.c libgloss/m32r/sbrk.c libgloss/m32r/stat.c libgloss/m32r/trap0.S libgloss/m32r/trapmon0.c libgloss/m32r/unlink.c libgloss/m32r/utime.c libgloss/m32r/write.c libgloss/m68k/Makefile.in libgloss/m68k/README libgloss/m68k/asm.h libgloss/m68k/bcc.ld libgloss/m68k/configure libgloss/m68k/configure.in libgloss/m68k/cpu32bug.S libgloss/m68k/cpu32bug.h libgloss/m68k/crt0.S libgloss/m68k/dbug-exit.S libgloss/m68k/dbug-inbyte.S libgloss/m68k/dbug-outbyte.S libgloss/m68k/dtor.C libgloss/m68k/idp-inbyte.c 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newlib/doc/doc.str newlib/doc/makedoc.c newlib/libc/Makefile.am newlib/libc/Makefile.in newlib/libc/aclocal.m4 newlib/libc/configure newlib/libc/configure.in newlib/libc/ctype/Makefile.am newlib/libc/ctype/Makefile.in newlib/libc/ctype/_tolower.c newlib/libc/ctype/_toupper.c newlib/libc/ctype/ctype.tex newlib/libc/ctype/ctype_.c newlib/libc/ctype/isalnum.c newlib/libc/ctype/isalpha.c newlib/libc/ctype/isascii.c newlib/libc/ctype/iscntrl.c newlib/libc/ctype/isdigit.c newlib/libc/ctype/islower.c newlib/libc/ctype/isprint.c newlib/libc/ctype/ispunct.c newlib/libc/ctype/isspace.c newlib/libc/ctype/isupper.c newlib/libc/ctype/isxdigit.c newlib/libc/ctype/toascii.c newlib/libc/ctype/tolower.c newlib/libc/ctype/toupper.c newlib/libc/errno/Makefile.am newlib/libc/errno/Makefile.in newlib/libc/errno/errno.c newlib/libc/include/_ansi.h newlib/libc/include/_syslist.h newlib/libc/include/ar.h newlib/libc/include/assert.h newlib/libc/include/ctype.h newlib/libc/include/dirent.h newlib/libc/include/errno.h newlib/libc/include/fastmath.h newlib/libc/include/fcntl.h newlib/libc/include/grp.h newlib/libc/include/ieeefp.h newlib/libc/include/locale.h newlib/libc/include/machine/fastmath.h newlib/libc/include/machine/ieeefp.h newlib/libc/include/machine/setjmp-dj.h newlib/libc/include/machine/setjmp.h newlib/libc/include/machine/time.h newlib/libc/include/machine/types.h newlib/libc/include/malloc.h newlib/libc/include/math.h newlib/libc/include/paths.h newlib/libc/include/process.h newlib/libc/include/pwd.h newlib/libc/include/reent.h newlib/libc/include/regdef.h newlib/libc/include/setjmp.h newlib/libc/include/signal.h newlib/libc/include/stdio.h newlib/libc/include/stdlib.h newlib/libc/include/string.h newlib/libc/include/sys/_types.h newlib/libc/include/sys/config.h newlib/libc/include/sys/dirent.h newlib/libc/include/sys/errno.h newlib/libc/include/sys/fcntl.h newlib/libc/include/sys/file.h newlib/libc/include/sys/param.h newlib/libc/include/sys/reent.h 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winsup/w32api/lib/wsock32.def winsup/w32api/lib/wst.def ylwrap
author: cvs2svn <> 2000-08-28 17:45:57 +0000
committer: cvs2svn <> 2000-08-28 17:45:57 +0000
commit: 8ad728f6884cab228c9d1cb2c48f305ec0afdf1a (patch)
tree: 94553fe0df19d986421b8954d4c90892c5597c3e /winsup/cygwin/sigproc.cc
parent: e0b0f635738c6bfce3bffe916ebf41908b4620fb (diff)
download: newlib-gh.zip
newlib-gh.tar.gz
newlib-gh.tar.bz2
1 files changed, 0 insertions, 1409 deletions
diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc
deleted file mode 100644
index f9f1498..0000000
--- a/winsup/cygwin/sigproc.cc
+++ /dev/null
@@ -1,1409 +0,0 @@
-/* sigproc.cc: inter/intra signal and sub process handler
-
-   Copyright 1997, 1998, 1999, 2000 Cygnus Solutions.
-
-   Written by Christopher Faylor <cgf@cygnus.com>
-
-This file is part of Cygwin.
-
-This software is a copyrighted work licensed under the terms of the
-Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
-details. */
-
-#include "winsup.h"
-#include <stdlib.h>
-#include <time.h>
-#include <sys/wait.h>
-#include <errno.h>
-#include <stdlib.h>
-#include "cygerrno.h"
-#include "sync.h"
-#include "sigproc.h"
-#include "pinfo.h"
-#include "perthread.h"
-
-extern BOOL allow_ntsec;
-
-/*
- * Convenience defines
- */
-#define WSSC		   60000 // Wait for signal completion
-#define WPSP		   40000 // Wait for proc_subproc mutex
-#define WSPX		   20000 // Wait for wait_sig to terminate
-#define WWSP		   20000 // Wait for wait_subproc to terminate
-
-#define WAIT_SIG_PRIORITY		THREAD_PRIORITY_NORMAL
-
-#define TOTSIGS	(NSIG + __SIGOFFSET)
-
-#define wake_wait_subproc() SetEvent (events[0])
-
-#define no_signals_available() (!hwait_sig || !sig_loop_wait)
-
-/*
- * Global variables
- */
-const char *__sp_fn ;
-int __sp_ln;
-
-char NO_COPY myself_nowait_dummy[1] = {'0'};// Flag to sig_send that signal goes to
-					//  current process but no wait is required
-char NO_COPY myself_nowait_nonmain_dummy[1] = {'1'};// Flag to sig_send that signal goes to
-					//  current process but no wait is required
-					//  if this is not the main thread.
-
-HANDLE NO_COPY signal_arrived;		// Event signaled when a signal has
-					//  resulted in a user-specified
-					//  function call
-/*
- * Common variables
- */
-
-
-/* How long to wait for message/signals.  Normally this is infinite.
- * On termination, however, these are set to zero as a flag to exit.
- */
-
-#define Static static NO_COPY
-
-Static DWORD proc_loop_wait = 500;	// Wait for subprocesses to exit
-Static DWORD sig_loop_wait = 500;	// Wait for signals to arrive
-
-Static HANDLE sigcatch_nonmain = NULL;	// The semaphore signaled when
-					//  signals are available for
-					//  processing from non-main thread
-Static HANDLE sigcatch_main = NULL;	// Signalled when main thread sends a
-					//  signal
-Static HANDLE sigcatch_nosync = NULL;	// Signal wait_sig to scan sigtodo
-					//  but not to bother with any
-					//  synchronization
-Static HANDLE sigcomplete_main = NULL;	// Event signaled when a signal has
-					//  finished processing for the main
-					//  thread
-Static HANDLE sigcomplete_nonmain = NULL;// Semaphore raised for non-main
-					//  threads when a signal has finished
-					//  processing
-Static HANDLE hwait_sig = NULL;		// Handle of wait_sig thread
-Static HANDLE hwait_subproc = NULL;	// Handle of sig_subproc thread
-
-Static HANDLE wait_sig_inited = NULL;	// Control synchronization of
-					//  message queue startup
-
-/* Used by WaitForMultipleObjects.  These are handles to child processes.
- */
-Static HANDLE events[PSIZE + 1] = {0};	// All my children's handles++
-#define hchildren (events + 1)		// Where the children handles begin
-Static pinfo pchildren[PSIZE] = {pinfo ()};// All my children info
-Static pinfo zombies[PSIZE] = {pinfo ()};	// All my deceased children info
-Static int nchildren = 0;		// Number of active children
-Static int nzombies = 0;		// Number of deceased children
-
-Static waitq waitq_head = {0, 0, 0, 0, 0, 0, 0};// Start of queue for wait'ing threads
-Static waitq waitq_main;		// Storage for main thread
-
-muto NO_COPY *sync_proc_subproc = NULL;	// Control access to subproc stuff
-
-DWORD NO_COPY sigtid = 0;		// ID of the signal thread
-
-int NO_COPY pending_signals = 0;	// TRUE if signals pending
-
-/* Functions
- */
-static int __stdcall checkstate (waitq *);
-static __inline__ BOOL get_proc_lock (DWORD, DWORD);
-static HANDLE __stdcall getsem (_pinfo *, const char *, int, int);
-static void __stdcall remove_child (int);
-static void __stdcall remove_zombie (int);
-static DWORD WINAPI wait_sig (VOID *arg);
-static int __stdcall stopped_or_terminated (waitq *, _pinfo *);
-static DWORD WINAPI wait_subproc (VOID *);
-
-/* Determine if the parent process is alive.
- */
-
-BOOL __stdcall
-my_parent_is_alive ()
-{
-  DWORD res;
-  if (!parent_alive)
-    {
-      debug_printf ("No parent_alive mutex");
-      res = FALSE;
-    }
-  else
-    for (int i = 0; i < 2; i++)
-      switch (res = WaitForSingleObject (parent_alive, 0))
-	{
-	  case WAIT_OBJECT_0:
-	    debug_printf ("parent dead.");
-	    res = FALSE;
-	    goto out;
-	  case WAIT_TIMEOUT:
-	    debug_printf ("parent still alive");
-	    res = TRUE;
-	    goto out;
-	  case WAIT_FAILED:
-	    DWORD werr = GetLastError ();
-	    if (werr == ERROR_INVALID_HANDLE && i == 0)
-	      continue;
-	    system_printf ("WFSO for parent_alive(%p) failed, error %d",
-			   parent_alive, werr);
-	    res = FALSE;
-	    goto out;
-	}
-out:
-  return res;
-}
-
-__inline static void
-wait_for_me ()
-{
-  /* See if this is the first signal call after initialization.
-   * If so, wait for notification that all initialization has completed.
-   * Then set the handle to NULL to avoid checking this again.
-   */
-  if (wait_sig_inited)
-    {
-      (void) WaitForSingleObject (wait_sig_inited, INFINITE);
-      (void) ForceCloseHandle (wait_sig_inited);
-      wait_sig_inited = NULL;
-    }
-}
-
-static BOOL __stdcall
-proc_can_be_signalled (_pinfo *p)
-{
-  if (p == myself_nowait || p == myself_nowait_nonmain || p == myself)
-    {
-      wait_for_me ();
-      return 1;
-    }
-
-  return ISSTATE (p, PID_INITIALIZING) ||
-	 (((p)->process_state & (PID_ACTIVE | PID_IN_USE)) ==
-	  (PID_ACTIVE | PID_IN_USE));
-}
-
-BOOL __stdcall
-proc_exists (pid_t pid)
-{
-  pinfo p (pid);
-  return proc_exists (p);
-}
-
-/* Test to determine if a process really exists and is processing
- * signals.
- */
-BOOL __stdcall
-proc_exists (_pinfo *p)
-{
-  HANDLE h;
-
-  if (p == NULL)
-    return FALSE;
-
-  if (p == myself || p == myself_nowait_nonmain || p == myself_nowait)
-    return TRUE;
-
-  if (p->process_state == PID_NOT_IN_USE || !p->dwProcessId)
-    return FALSE;
-
-  sigproc_printf ("checking for existence of pid %d, window pid %d", p->pid,
-	      p->dwProcessId);
-  if (p->ppid == myself->pid && p->hProcess != NULL)
-    {
-      sigproc_printf ("it's mine, process_state %x", p->process_state);
-      return proc_can_be_signalled (p);
-    }
-
-  /* Note: Process is alive if OpenProcess() call fails due to permissions */
-  if (((h = OpenProcess (STANDARD_RIGHTS_REQUIRED, FALSE, p->dwProcessId))
-      != NULL) || (GetLastError () == ERROR_ACCESS_DENIED))
-    {
-      sigproc_printf ("it exists, %p", h);
-      if (h)
-	{
-	  DWORD rc = WaitForSingleObject (h, 0);
-	  CloseHandle (h);
-	  if (rc == WAIT_OBJECT_0)
-	    return 0;
-	}
-      return proc_can_be_signalled (p);
-    }
-
-  sigproc_printf ("it doesn't exist");
-  /* If the parent pid does not exist, clean this process out of the pinfo
-   * table.  It must have died abnormally.
-   */
-  if ((p->pid == p->ppid) || (p->ppid == 1) || !proc_exists (p->ppid))
-    {
-      p->hProcess = NULL;
-      p->process_state = PID_NOT_IN_USE;
-    }
-  return FALSE;
-}
-
-/* Handle all subprocess requests
- */
-#define vchild (*((pinfo *) val))
-int __stdcall
-proc_subproc (DWORD what, DWORD val)
-{
-  int rc = 1;
-  int potential_match;
-  DWORD exitcode;
-  _pinfo *child;
-  int clearing;
-  waitq *w;
-
-#define wval	 ((waitq *) val)
-
-  sigproc_printf ("args: %x, %d", what, val);
-
-  if (!get_proc_lock (what, val))	// Serialize access to this function
-    {
-      sigproc_printf ("I am not ready");
-      goto out1;
-    }
-
-  switch (what)
-    {
-    /* Add a new subprocess to the children arrays.
-     * (usually called from the main thread)
-     */
-    case PROC_ADDCHILD:
-      if (nchildren >= PSIZE - 1)
-	system_printf ("nchildren too large %d", nchildren);
-      if (WaitForSingleObject (vchild->hProcess, 0) != WAIT_TIMEOUT)
-	{
-	  system_printf ("invalid process handle %p.  pid %d, win pid %d",
-			vchild->hProcess, vchild->pid, vchild->dwProcessId);
-	  rc = 0;
-	  break;
-	}
-
-      pchildren[nchildren] = vchild;
-      hchildren[nchildren] = vchild->hProcess;
-      ProtectHandle1 (vchild->hProcess, childhProc);
-      sigproc_printf ("added pid %d to wait list, slot %d, winpid %p, handle %p",
-		  vchild->pid, nchildren, vchild->dwProcessId,
-		  vchild->hProcess);
-
-      nchildren++;
-      wake_wait_subproc ();
-      break;
-
-    /* A child process had terminated.
-     * Possibly this is just due to an exec().  Cygwin implements an exec()
-     * as a "handoff" from one windows process to another.  If child->hProcess
-     * is different from what is recorded in hchildren, then this is an exec().
-     * Otherwise this is a normal child termination event.
-     * (called from wait_subproc thread)
-     */
-    case PROC_CHILDTERMINATED:
-      rc = 0;
-      if (GetExitCodeProcess (hchildren[val], &exitcode) &&
-	  hchildren[val] != pchildren[val]->hProcess)
-	{
-	  sigproc_printf ("pid %d[%d], reparented old hProcess %p, new %p",
-		      pchildren[val]->pid, val, hchildren[val], pchildren[val]->hProcess);
-	  ForceCloseHandle1 (hchildren[val], childhProc);
-	  hchildren[val] = pchildren[val]->hProcess; /* Filled out by child */
-	  ProtectHandle1 (pchildren[val]->hProcess, childhProc);
-	  break;			// This was an exec()
-	}
-
-      sigproc_printf ("pid %d[%d] terminated, handle %p, nchildren %d, nzombies %d",
-		  pchildren[val]->pid, val, hchildren[val], nchildren, nzombies);
-      zombies[nzombies] = pchildren[val];	// Add to zombie array
-      zombies[nzombies++]->process_state = PID_ZOMBIE;// Walking dead
-      remove_child (val);		// Remove from children array
-      if (!proc_loop_wait)		// Don't bother if wait_subproc is
-	break;				//  exiting
-
-      /* Send a SIGCHLD to myself. */
-      rc = sig_send (myself_nowait, SIGCHLD);	// Send a SIGCHLD
-      break;
-
-    /* A child is in the stopped state.  Scan wait() queue to see if anyone
-     * should be notified.  (Called from wait_sig thread)
-     */
-    case PROC_CHILDSTOPPED:
-      child = myself;		// Just to avoid accidental NULL dereference
-      sigproc_printf ("Received stopped notification");
-      clearing = 0;
-      goto scan_wait;
-
-    /* Clear all waiting threads.  Called from exceptions.cc prior to
-     * the main thread's dispatch to a signal handler function.
-     * (called from wait_sig thread)
-     */
-    case PROC_CLEARWAIT:
-      /* Clear all "wait"ing threads. */
-      if (val)
-	sigproc_printf ("clear waiting threads");
-      else
-	sigproc_printf ("looking for processes to reap");
-      clearing = val;
-
-    scan_wait:
-      /* Scan the linked list of wait()ing threads.  If a wait's parameters
-       * match this pid, then activate it.
-       */
-      for (w = &waitq_head; w->next != NULL; w = w->next)
-	{
-	  if ((potential_match = checkstate (w)) > 0)
-	    sigproc_printf ("released waiting thread");
-	  else if (!clearing && potential_match < 0)
-	    sigproc_printf ("only found non-terminated children");
-	  else if (potential_match <= 0)		// nothing matched
-	    {
-	      sigproc_printf ("waiting thread found no children");
-	      HANDLE oldw = w->next->ev;
-	      if (clearing)
-		w->next->status = -1;		/* flag that a signal was received */
-	      else
-		w->next->ev = NULL;
-	      if (!SetEvent (oldw))
-		system_printf ("couldn't wake up wait event %p, %E", oldw);
-	      w->next = w->next->next;
-	    }
-	  if (w->next == NULL)
-	    break;
-	}
-
-      if (!clearing)
-	sigproc_printf ("finished processing terminated/stopped child");
-      else
-	{
-	  waitq_head.next = NULL;
-	  sigproc_printf ("finished clearing");
-	}
-      break;
-
-    /* Handle a wait4() operation.  Allocates an event for the calling
-     * thread which is signaled when the appropriate pid exits or stops.
-     * (usually called from the main thread)
-     */
-    case PROC_WAIT:
-      wval->ev = NULL;		// Don't know event flag yet
-
-      if (wval->pid <= 0)
-	child = NULL;		// Not looking for a specific pid
-      else if (!proc_exists (wval->pid)) /* CGF FIXME -- test that this is one of mine */
-	goto out;		// invalid pid.  flag no such child
-
-      wval->status = 0;		// Don't know status yet
-
-      /* Put waitq structure at the end of a linked list. */
-      for (w = &waitq_head; w->next != NULL; w = w->next)
-	if (w->next == wval && (w->next = w->next->next) == NULL)
-	  break;
-
-      wval->next = NULL;	/* This will be last in the list */
-      sigproc_printf ("wval->pid %d, wval->options %d", wval->pid, wval->options);
-
-      /* If the first time for this thread, create a new event, otherwise
-       * reset the event.
-       */
-      if ((wval->ev = wval->thread_ev) == NULL)
-	{
-	  wval->ev = wval->thread_ev = CreateEvent (&sec_none_nih, TRUE,
-						    FALSE, NULL);
-	  ProtectHandle (wval->ev);
-	}
-      ResetEvent (wval->ev);
-
-      /* Scan list of children to see if any have died.
-       * If so, the event flag is set so that the wait* ()
-       * process will return immediately.
-       *
-       * If no children were found and the wait option was WNOHANG,
-       * then set the pid to 0 and remove the waitq value from
-       * consideration.
-       */
-      w->next = wval;		/* set at end of wait queue */
-      if ((potential_match = checkstate (w)) <= 0)
-	{
-	  if (!potential_match)
-	    {
-	      w->next = NULL;		// don't want to keep looking
-	      wval->ev = NULL;		// flag that there are no children
-	      sigproc_printf ("no appropriate children, %p, %p",
-			  wval->thread_ev, wval->ev);
-	    }
-	  else if (wval->options & WNOHANG)
-	    {
-	      w->next = NULL;		// don't want to keep looking
-	      wval->pid = 0;		// didn't find a pid
-	      if (!SetEvent (wval->ev))	// wake up wait4 () immediately
-		system_printf ("Couldn't wake up wait event, %E");
-	      sigproc_printf ("WNOHANG and no terminated children, %p, %p",
-			  wval->thread_ev, wval->ev);
-	    }
-	}
-      if (w->next != NULL)
-	sigproc_printf ("wait activated %p, %p", wval->thread_ev, wval->ev);
-      else if (wval->ev != NULL)
-	sigproc_printf ("wait activated %p.  Reaped zombie.", wval->ev);
-      else
-	sigproc_printf ("wait not activated %p, %p", wval->thread_ev, wval->ev);
-      break;
-  }
-
-out:
-  sync_proc_subproc->release ();	// Release the lock
-out1:
-  sigproc_printf ("returning %d", rc);
-  return rc;
-}
-
-/* Terminate the wait_subproc thread.
- * Called on process exit.
- * Also called by spawn_guts to disassociate any subprocesses from this
- * process.  Subprocesses will then know to clean up after themselves and
- * will not become zombies.
- */
-void __stdcall
-proc_terminate (void)
-{
-  sigproc_printf ("nchildren %d, nzombies %d", nchildren, nzombies);
-  /* Signal processing is assumed to be blocked in this routine. */
-  if (hwait_subproc)
-    {
-      int rc;
-      proc_loop_wait = 0;	// Tell wait_subproc thread to exit
-      wake_wait_subproc ();	// Wake wait_subproc loop
-
-      /* Wait for wait_subproc thread to exit (but not *too* long) */
-      if ((rc = WaitForSingleObject (hwait_subproc, WWSP)) != WAIT_OBJECT_0)
-	if (rc == WAIT_TIMEOUT)
-	  system_printf ("WFSO(hwait_subproc) timed out");
-	else
-	  system_printf ("WFSO(hwait_subproc), rc %d, %E", rc);
-
-      HANDLE h = hwait_subproc;
-      hwait_subproc = NULL;
-      ForceCloseHandle1 (h, hwait_subproc);
-
-      sync_proc_subproc->acquire(WPSP);
-      (void) proc_subproc (PROC_CLEARWAIT, 1);
-
-      /* Clean out zombie processes from the pid list. */
-      int i;
-      for (i = 0; i < nzombies; i++)
-	{
-	  if (zombies[i]->hProcess)
-	    {
-	      ForceCloseHandle1 (zombies[i]->hProcess, childhProc);
-	      zombies[i]->hProcess = NULL;
-	    }
-	  zombies[i]->process_state = PID_NOT_IN_USE;	/* CGF FIXME - still needed? */
-	  zombies[i].release();		// FIXME: this breaks older gccs for some reason
-	}
-
-      /* Disassociate my subprocesses */
-      for (i = 0; i < nchildren; i++)
-	{
-	  if (pchildren[i]->process_state == PID_NOT_IN_USE)
-	    continue;		// Should never happen
-	  if (!pchildren[i]->hProcess)
-	    sigproc_printf ("%d(%d) hProcess cleared already?", pchildren[i]->pid,
-			pchildren[i]->dwProcessId);
-	  else
-	    {
-	      ForceCloseHandle1 (pchildren[i]->hProcess, childhProc);
-	      pchildren[i]->hProcess = NULL;
-	      if (!proc_exists (pchildren[i]))
-		{
-		  sigproc_printf ("%d(%d) doesn't exist", pchildren[i]->pid,
-			      pchildren[i]->dwProcessId);
-		  pchildren[i]->process_state = PID_NOT_IN_USE;	/* a reaped child  CGF FIXME -- still needed? */
-		}
-	      else
-		{
-		  sigproc_printf ("%d(%d) closing active child handle", pchildren[i]->pid,
-			      pchildren[i]->dwProcessId);
-		  pchildren[i]->ppid = 1;
-		  if (pchildren[i]->pgid == myself->pid)
-		    pchildren[i]->process_state |= PID_ORPHANED;
-		}
-	    }
-	  pchildren[i].release (); // FIXME: this breaks older gccs for some reason
-	}
-      nchildren = nzombies = 0;
-
-      /* Just zero sync_proc_subproc as the delete below seems to cause
-	 problems for older gccs. */
-      #if 1
-	sync_proc_subproc = NULL;
-      #else
-      /* Attempt to close and release sync_proc_subproc in a
-       * non-raceable manner.
-       */
-      muto *m = sync_proc_subproc;
-      if (m)
-	{
-	  sync_proc_subproc = NULL;
-	  // delete m;
-	}
-      #endif
-    }
-  sigproc_printf ("leaving");
-}
-
-/* Clear pending signal from the sigtodo array
- */
-void __stdcall
-sig_clear (int sig)
-{
-  (void) InterlockedExchange (myself->getsigtodo(sig), 0L);
-  return;
-}
-
-/* Force the wait_sig thread to wake up and scan the sigtodo array.
- */
-extern "C" int __stdcall
-sig_dispatch_pending (int justwake)
-{
-  if (!hwait_sig)
-    return 0;
-
-  int was_pending = pending_signals;
-#ifdef DEBUGGING
-  sigproc_printf ("pending_signals %d", was_pending);
-#endif
-  if (!was_pending && !justwake)
-#ifdef DEBUGGING
-    sigproc_printf ("no need to wake anything up");
-#else
-    ;
-#endif
-  else
-    {
-      wait_for_me ();
-      if (!justwake)
-	(void) sig_send (myself, __SIGFLUSH);
-      else if (ReleaseSemaphore (sigcatch_nosync, 1, NULL))
-#ifdef DEBUGGING
-	sigproc_printf ("woke up wait_sig");
-#else
-	;
-#endif
-      else if (no_signals_available ())
-	/*sigproc_printf ("I'm going away now")*/;
-      else
-	system_printf ("%E releasing sigcatch_nosync(%p)", sigcatch_nosync);
- 
-    }
-  return was_pending;
-}
-
-/* Message initialization.  Called from dll_crt0_1
- *
- * This routine starts the signal handling thread.  The wait_sig_inited
- * event is used to signal that the thread is ready to handle signals.
- * We don't wait for this during initialization but instead detect it
- * in sig_send to gain a little concurrency.
- */
-void __stdcall
-sigproc_init ()
-{
-  wait_sig_inited = CreateEvent (&sec_none_nih, FALSE, FALSE, NULL);
-  ProtectHandle (wait_sig_inited);
-
-  /* local event signaled when main thread has been dispatched
-     to a signal handler function. */
-  signal_arrived = CreateEvent(&sec_none_nih, TRUE, FALSE, NULL);
-
-  if (!(hwait_sig = makethread (wait_sig, NULL, 0, "sig")))
-    {
-      system_printf ("cannot create wait_sig thread, %E");
-      api_fatal ("terminating");
-    }
-
-  ProtectHandle (hwait_sig);
-
-  /* sync_proc_subproc is used by proc_subproc.  It serialises
-   * access to the children and zombie arrays.
-   */
-  sync_proc_subproc = new_muto (FALSE, "sync_proc_subproc");
-
-  /* Initialize waitq structure for main thread.  A waitq structure is
-   * allocated for each thread that executes a wait to allow multiple threads
-   * to perform waits.  Pre-allocate a waitq structure for the main thread.
-   */
-  waitq *w;
-  if ((w = (waitq *)waitq_storage.get ()) == NULL)
-    {
-      w = &waitq_main;
-      waitq_storage.set (w);
-    }
-  memset (w, 0, sizeof *w);	// Just to be safe
-
-  sigproc_printf ("process/signal handling enabled(%x)", myself->process_state);
-  return;
-}
-
-/* Called on process termination to terminate signal and process threads.
- */
-void __stdcall
-sigproc_terminate (void)
-{
-  HANDLE h = hwait_sig;
-  hwait_sig = NULL;
-
-  if (GetCurrentThreadId () == sigtid)
-    {
-      ForceCloseHandle (sigcomplete_main);
-      for (int i = 0; i < 20; i++)
-	(void) ReleaseSemaphore (sigcomplete_nonmain, 1, NULL);
-      ForceCloseHandle (sigcomplete_nonmain);
-      ForceCloseHandle (sigcatch_main);
-      ForceCloseHandle (sigcatch_nonmain);
-      ForceCloseHandle (sigcatch_nosync);
-    }
-  proc_terminate ();		// Terminate process handling thread
-
-  if (!sig_loop_wait)
-    sigproc_printf ("sigproc_terminate: sigproc handling not active");
-  else
-    {
-      sigproc_printf ("entering");
-      sig_loop_wait = 0;	// Tell wait_sig to exit when it is
-				//  finished with anything it is doing
-      sig_dispatch_pending (TRUE);	// wake up and die
-
-      /* If !hwait_sig, then the process probably hasn't even finished
-       * its initialization phase.
-       */
-      if (hwait_sig)
-	{
-	  if (GetCurrentThreadId () != sigtid)
-	    WaitForSingleObject (h, 10000);
-	  ForceCloseHandle1 (h, hwait_sig);
-
-	  /* Exiting thread.  Cleanup.  Don't set to inactive if a child has been
-	     execed with the same pid. */
-	  if (!myself->dwProcessId || myself->dwProcessId == GetCurrentProcessId ())
-	    myself->process_state &= ~PID_ACTIVE;
-	  else
-	    sigproc_printf ("Did not clear PID_ACTIVE since %d != %d",
-			myself->dwProcessId, GetCurrentProcessId ());
-
-	  /* In case of a sigsuspend */
-	  SetEvent (signal_arrived);
-
-	  if (GetCurrentThreadId () != sigtid)
-	    {
-	      ForceCloseHandle (sigcomplete_main);
-	      ForceCloseHandle (sigcomplete_nonmain);
-	      ForceCloseHandle (sigcatch_main);
-	      ForceCloseHandle (sigcatch_nonmain);
-	      ForceCloseHandle (sigcatch_nosync);
-	    }
-	}
-      sigproc_printf ("done");
-    }
-
-  /* Set this so that subsequent tests will succeed. */
-  if (!myself->dwProcessId)
-    myself->dwProcessId = GetCurrentProcessId ();
-
-  return;
-}
-
-/* Send a signal to another process by raising its signal semaphore.
- * If pinfo *p == NULL, send to the current process.
- * If sending to this process, wait for notification that a signal has
- * completed before returning.
- */
-int __stdcall
-sig_send (_pinfo *p, int sig, DWORD ebp)
-{
-  int rc = 1;
-  DWORD tid = GetCurrentThreadId ();
-  BOOL its_me;
-  HANDLE thiscatch = NULL;
-  HANDLE thiscomplete = NULL;
-  BOOL wait_for_completion;
-  sigframe thisframe;
-
-  if (p == myself_nowait_nonmain)
-    p = (tid == mainthread.id) ? (_pinfo *) myself : myself_nowait;
-  if (!(its_me = (p == NULL || p == myself || p == myself_nowait)))
-    wait_for_completion = FALSE;
-  else
-    {
-      if (no_signals_available ())
-	goto out;		// Either exiting or not yet initializing
-      wait_for_me ();
-      wait_for_completion = p != myself_nowait;
-      p = myself;
-    }
-
-  /* It is possible that the process is not yet ready to receive messages
-   * or that it has exited.  Detect this.
-   */
-  if (!proc_can_be_signalled (p))	/* Is the process accepting messages? */
-    {
-      sigproc_printf ("invalid pid %d(%x), signal %d",
-		  p->pid, p->process_state, sig);
-      set_errno (ESRCH);
-      goto out;
-    }
-
-  sigproc_printf ("pid %d, signal %d, its_me %d", p->pid, sig, its_me);
-
-  if (its_me)
-    {
-      if (!wait_for_completion)
-	thiscatch = sigcatch_nosync;
-      else if (tid != mainthread.id)
-	{
-	  thiscatch = sigcatch_nonmain;
-	  thiscomplete = sigcomplete_nonmain;
-	}
-      else
-	{
-	  thiscatch = sigcatch_main;
-	  thiscomplete = sigcomplete_main;
-	  thisframe.set (mainthread, 1, ebp);
-	}
-    }
-  else if (!(thiscatch = getsem (p, "sigcatch", 0, 0)))
-    goto out;		  // Couldn't get the semaphore.  getsem issued
-			  //  an error, if appropriate.
-
-#if WHEN_MULTI_THREAD_SIGNALS_WORK
-  signal_dispatch *sd;
-  sd = signal_dispatch_storage.get ();
-  if (sd == NULL)
-    sd = signal_dispatch_storage.create ();
-#endif
-
-  /* Increment the sigtodo array to signify which signal to assert.
-   */
-  (void) InterlockedIncrement (p->getsigtodo(sig));
-
-  /* Notify the process that a signal has arrived.
-   */
-  SetLastError (0);
-
-#if 0
-  int prio;
-  prio = GetThreadPriority (GetCurrentThread ());
-  (void) SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_TIME_CRITICAL);
-#endif
-
-  if (!ReleaseSemaphore (thiscatch, 1, NULL) && (int) GetLastError () > 0)
-    {
-sigproc_printf ("ReleaseSemaphore failed, %E");
-      /* Couldn't signal the semaphore.  This probably means that the
-       * process is exiting.
-       */
-      if (!its_me)
-	ForceCloseHandle (thiscatch);
-      else
-	{
-	  if (no_signals_available ())
-	    sigproc_printf ("I'm going away now");
-	  else if ((int) GetLastError () == -1)
-	    rc = WaitForSingleObject (thiscomplete, 500);
-	  else
-	    system_printf ("error sending signal %d to pid %d, semaphore %p, %E",
-			  sig, p->pid, thiscatch);
-	}
-      goto out;
-    }
-sigproc_printf ("ReleaseSemaphore succeeded");
-
-  /* No need to wait for signal completion unless this was a signal to
-   * this process.
-   *
-   * If it was a signal to this process, wait for a dispatched signal.
-   * Otherwise just wait for the wait_sig to signal that it has finished
-   * processing the signal.
-   */
-  if (!wait_for_completion)
-    {
-      rc = WAIT_OBJECT_0;
-      sigproc_printf ("Not waiting for sigcomplete.  its_me %d sig %d", its_me, sig);
-      if (!its_me)
-	ForceCloseHandle (thiscatch);
-    }
-  else
-    {
-      sigproc_printf ("Waiting for thiscomplete %p", thiscomplete);
-
-      SetLastError (0);
-      rc = WaitForSingleObject (thiscomplete, WSSC);
-      /* Check for strangeness due to this thread being redirected by the
-	 signal handler.  Sometimes a WAIT_TIMEOUT will occur when the
-	 thread hasn't really timed out.  So, check again.
-	 FIXME: This isn't foolproof. */
-      if (rc != WAIT_OBJECT_0 &&
-	  WaitForSingleObject (thiscomplete, 0) == WAIT_OBJECT_0)
-	rc = WAIT_OBJECT_0;
-    }
-
-#if 0
-  SetThreadPriority (GetCurrentThread (), prio);
-#endif
-
-  if (rc == WAIT_OBJECT_0)
-    rc = 0;		// Successful exit
-  else
-    {
-      /* It's an error unless sig_loop_wait == 0 (the process is exiting). */
-      if (!no_signals_available ())
-	system_printf ("wait for sig_complete event failed, sig %d, rc %d, %E",
-		      sig, rc);
-      set_errno (ENOSYS);
-      rc = -1;
-    }
-
-out:
-  sigproc_printf ("returning %d from sending signal %d", rc, sig);
-  return rc;
-}
-
-/* Set pending signal from the sigtodo array
- */
-void __stdcall
-sig_set_pending (int sig)
-{
-  (void) InterlockedIncrement (myself->getsigtodo(sig));
-  return;
-}
-
-/* Initialize the wait_subproc thread.
- * Called from fork() or spawn() to initialize the handling of subprocesses.
- */
-void __stdcall
-subproc_init (void)
-{
-  if (hwait_subproc)
-    return;
-
-  /* A "wakeup" handle which can be toggled to make wait_subproc reexamine
-   * the hchildren array.
-   */
-  events[0] = CreateEvent (&sec_none_nih, FALSE, FALSE, NULL);
-  if (!(hwait_subproc = makethread (wait_subproc, NULL, 0, "+proc")))
-    system_printf ("cannot create wait_subproc thread, %E");
-  ProtectHandle (events[0]);
-  ProtectHandle (hwait_subproc);
-  sigproc_printf ("started wait_subproc thread %p", hwait_subproc);
-}
-
-/* Initialize some of the memory block passed to child processes
-   by fork/spawn/exec. */
-
-void __stdcall
-init_child_info (DWORD chtype, child_info *ch, pid_t pid, HANDLE subproc_ready)
-{
-  subproc_init ();
-  memset (ch, 0, sizeof *ch);
-  ch->cb = sizeof *ch;
-  ch->type = chtype;
-  ch->cygpid = pid;
-  ch->shared_h = cygwin_shared_h;
-  ch->console_h = console_shared_h;
-  ch->subproc_ready = subproc_ready;
-  if (chtype != PROC_EXEC || !parent_alive)
-    ch->parent_alive = hwait_subproc;
-  else if (parent_alive)
-    DuplicateHandle (hMainProc, parent_alive, hMainProc, &ch->parent_alive,
-		     0, 1, DUPLICATE_SAME_ACCESS);
-}
-
-/* Check the state of all of our children to see if any are stopped or
- * terminated.
- */
-static int __stdcall
-checkstate (waitq *w)
-{
-  int i, x, potential_match = 0;
-  _pinfo *child;
-
-  sigproc_printf ("nchildren %d, nzombies %d", nchildren, nzombies);
-
-  /* Check already dead processes first to see if they match the criteria
-   * given in w->next.
-   */
-  for (i = 0; i < nzombies; i++)
-    if ((x = stopped_or_terminated (w, child = zombies[i])) < 0)
-      potential_match = -1;
-    else if (x > 0)
-      {
-	remove_zombie (i);
-	potential_match = 1;
-	goto out;
-      }
-
-  sigproc_printf ("checking alive children");
-
-  /* No dead terminated children matched.  Check for stopped children. */
-  for (i = 0; i < nchildren; i++)
-    if ((x = stopped_or_terminated (w, pchildren[i])) < 0)
-      potential_match = -1;
-    else if (x > 0)
-      {
-	potential_match = 1;
-	break;
-      }
-
-out:
-  sigproc_printf ("returning %d", potential_match);
-  return potential_match;
-}
-
-/* Get or create a process specific semaphore used in message passing.
- */
-static HANDLE __stdcall
-getsem (_pinfo *p, const char *str, int init, int max)
-{
-  HANDLE h;
-
-  if (p != NULL)
-    {
-      if (!proc_can_be_signalled (p))
-	{
-	  set_errno (ESRCH);
-	  return NULL;
-	}
-      int wait = 10000;
-      sigproc_printf ("pid %d, ppid %d, wait %d, initializing %x", p->pid, p->ppid, wait,
-		  ISSTATE (p, PID_INITIALIZING));
-      for (int i = 0; ISSTATE (p, PID_INITIALIZING) && i < wait; i++)
-	Sleep (1);
-    }
-
-  SetLastError (0);
-  if (p == NULL)
-    {
-      char sa_buf[1024];
-
-      DWORD winpid = GetCurrentProcessId ();
-      h = CreateSemaphore (allow_ntsec ? sec_user (sa_buf) : &sec_none_nih,
-			   init, max, str = shared_name (str, winpid));
-      p = myself;
-    }
-  else
-    {
-      h = OpenSemaphore (SEMAPHORE_ALL_ACCESS, FALSE,
-			 str = shared_name (str, p->dwProcessId));
-
-      if (h == NULL)
-	{
-	  if (GetLastError () == ERROR_FILE_NOT_FOUND && !proc_exists (p))
-	    set_errno (ESRCH);
-	  else
-	    set_errno (EPERM);
-	  return NULL;
-	}
-    }
-
-  if (!h)
-    {
-      system_printf ("can't %s %s, %E", p ? "open" : "create", str);
-      set_errno (ESRCH);
-    }
-  return h;
-}
-
-/* Get the sync_proc_subproc muto to control access to
- * children, zombie arrays.
- * Attempt to handle case where process is exiting as we try to grab
- * the mutex.
- */
-static BOOL
-get_proc_lock (DWORD what, DWORD val)
-{
-  Static int lastwhat = -1;
-  if (!sync_proc_subproc)
-    return FALSE;
-  if (sync_proc_subproc->acquire (WPSP))
-    {
-      lastwhat = what;
-      return TRUE;
-    }
-  if (!sync_proc_subproc)
-    return FALSE;
-  system_printf ("Couldn't aquire sync_proc_subproc for(%d,%d), %E, last %d",
-		  what, val, lastwhat);
-  return TRUE;
-}
-
-/* Remove a child from pchildren/hchildren by swapping it with the
- * last child in the list.
- */
-static void __stdcall
-remove_child (int ci)
-{
-  sigproc_printf ("removing [%d], pid %d, handle %p, nchildren %d",
-	      ci, pchildren[ci]->pid, hchildren[ci], nchildren);
-  if (ci < --nchildren)
-    {
-      pchildren[ci] = pchildren[nchildren];
-      hchildren[ci] = hchildren[nchildren];
-    }
-
-  return;
-}
-
-/* Remove a zombie from zombies by swapping it with the last child in the list.
- */
-static void __stdcall
-remove_zombie (int ci)
-{
-  sigproc_printf ("removing %d, pid %d, nzombies %d", ci, zombies[ci]->pid,
-	      nzombies);
-
-  if (zombies[ci])
-    zombies[ci].release ();
-
-  if (ci < --nzombies)
-    zombies[ci] = zombies[nzombies];
-
-  return;
-}
-
-/* Check status of child process vs. waitq member.
- *
- * parent_w is the pointer to the parent of the waitq member in question.
- * child is the subprocess being considered.
- *
- * Returns
- *   1 if stopped or terminated child matches parent_w->next criteria
- *  -1 if a non-stopped/terminated child matches parent_w->next criteria
- *   0 if child does not match parent_w->next criteria
- */
-static int __stdcall
-stopped_or_terminated (waitq *parent_w, _pinfo *child)
-{
-  int potential_match;
-  waitq *w = parent_w->next;
-
-  sigproc_printf ("considering pid %d", child->pid);
-  if (w->pid == -1)
-    potential_match = 1;
-  else if (w->pid == 0)
-    potential_match = child->pgid == myself->pgid;
-  else if (w->pid < 0)
-    potential_match = child->pgid == -w->pid;
-  else
-    potential_match = (w->pid == child->pid);
-
-  if (!potential_match)
-    return 0;
-
-  BOOL terminated;
-
-  if ((terminated = child->process_state == PID_ZOMBIE) ||
-      (w->options & WUNTRACED) && child->stopsig)
-    {
-      parent_w->next = w->next;	/* successful wait.  remove from wait queue */
-      w->pid = child->pid;
-
-      if (!terminated)
-	{
-	  sigproc_printf ("stopped child");
-	  w->status = (child->stopsig << 8) | 0x7f;
-	  child->stopsig = 0;
-	}
-      else /* Should only get here when child has been moved to the zombies array */
-	{
-	  DWORD status;
-	  if (!GetExitCodeProcess (child->hProcess, &status))
-	    status = 0xffff;
-	  if (status & EXIT_SIGNAL)
-	    w->status = (status >> 8) & 0xff;	/* exited due to signal */
-	  else
-	    w->status = (status & 0xff) << 8;	/* exited via "exit ()" */
-
-	  add_rusage (&myself->rusage_children, &child->rusage_children);
-	  add_rusage (&myself->rusage_children, &child->rusage_self);
-
-	  if (w->rusage)
-	    {
-	      add_rusage ((struct rusage *) w->rusage, &child->rusage_children);
-	      add_rusage ((struct rusage *) w->rusage, &child->rusage_self);
-	    }
-	  ForceCloseHandle1 (child->hProcess, childhProc);
-	  child->hProcess = NULL;
-	  child->process_state = PID_NOT_IN_USE;	/* a reaped child */
-	}
-
-      if (!SetEvent (w->ev))	/* wake up wait4 () immediately */
-	system_printf ("couldn't wake up wait event %p, %E", w->ev);
-      return 1;
-    }
-
-  return -potential_match;
-}
-
-/* Process signals by waiting for a semaphore to become signaled.
- * Then scan an in-memory array representing queued signals.
- * Executes in a separate thread.
- *
- * Signals sent from this process are sent a completion signal so
- * that returns from kill/raise do not occur until the signal has
- * has been handled, as per POSIX.
- */
-static DWORD WINAPI
-wait_sig (VOID *)
-{
-  /* Initialization */
-  (void) SetThreadPriority (hwait_sig, WAIT_SIG_PRIORITY);
-
-  /* sigcatch_nosync       - semaphore incremented by sig_dispatch_pending and
-   *			     by foreign processes to force an examination of
-   *			     the sigtodo array.
-   * sigcatch_main	   - ditto for local main thread.
-   * sigcatch_nonmain      - ditto for local non-main threads.
-   *
-   * sigcomplete_main	   - event used to signal main thread on signal
-   *			     completion
-   * sigcomplete_nonmain   - semaphore signaled for non-main thread on signal
-   *			     completion
-   */
-  sigcatch_nosync = getsem (NULL, "sigcatch", 0, MAXLONG);
-  sigcatch_nonmain = CreateSemaphore (&sec_none_nih, 0, MAXLONG, NULL);
-  sigcatch_main = CreateSemaphore (&sec_none_nih, 0, MAXLONG, NULL);
-  sigcomplete_nonmain = CreateSemaphore (&sec_none_nih, 0, MAXLONG, NULL);
-  sigcomplete_main = CreateEvent (&sec_none_nih, FALSE, FALSE, NULL);
-  sigproc_printf ("sigcatch_nonmain %p", sigcatch_nonmain);
-
-  /* Setting dwProcessId flags that this process is now capable of receiving
-   * signals.  Prior to this, dwProcessId was set to the windows pid of
-   * of the original windows process which spawned us unless this was a
-   * "toplevel" process.
-   */
-  myself->dwProcessId = GetCurrentProcessId ();
-  myself->process_state |= PID_ACTIVE;
-  myself->process_state &= ~PID_INITIALIZING;
-
-  ProtectHandle (sigcatch_nosync);
-  ProtectHandle (sigcatch_nonmain);
-  ProtectHandle (sigcatch_main);
-  ProtectHandle (sigcomplete_nonmain);
-  ProtectHandle (sigcomplete_main);
-
-  /* If we've been execed, then there is still a stub left in the previous
-   * windows process waiting to see if it's started a cygwin process or not.
-   * Signalling subproc_ready indicates that we are a cygwin process.
-   */
-  if (child_proc_info && child_proc_info->type == PROC_EXEC)
-    {
-      debug_printf ("subproc_ready %p", child_proc_info->subproc_ready);
-      if (!SetEvent (child_proc_info->subproc_ready))
-	system_printf ("SetEvent (subproc_ready) failed, %E");
-      ForceCloseHandle (child_proc_info->subproc_ready);
-      /* Initialize an "indirect" pid block so that if someone looks up this
-	 process via its Windows PID it will be redirected to the appropriate
-	 Cygwin PID shared memory block. */
-      static pinfo NO_COPY myself_identity;
-      myself_identity.init (cygwin_pid (myself->dwProcessId), PID_EXECED);
-    }
-
-  SetEvent (wait_sig_inited);
-  sigtid = GetCurrentThreadId ();
-
-  /* If we got something like a SIGINT while we were initializing, the
-     signal thread should be waiting for this event.  This signals the
-     thread that it's ok to send the signal since the wait_sig thread
-     is now active. */
-  extern HANDLE console_handler_thread_waiter;
-  SetEvent (console_handler_thread_waiter);
-
-  HANDLE catchem[] = {sigcatch_main, sigcatch_nonmain, sigcatch_nosync};
-  sigproc_printf ("Ready.  dwProcessid %d", myself->dwProcessId);
-  for (;;)
-    {
-      DWORD rc = WaitForMultipleObjects (3, catchem, FALSE, sig_loop_wait);
-
-      /* sigproc_terminate sets sig_loop_wait to zero to indicate that
-       * this thread should terminate.
-       */
-      if (rc == WAIT_TIMEOUT)
-	if (!sig_loop_wait)
-	  break;			// Exiting
-	else
-	  continue;
-
-      if (rc == WAIT_FAILED)
-	{
-	  if (sig_loop_wait != 0)
-	    system_printf ("WFMO failed, %E");
-	  break;
-	}
-
-      rc -= WAIT_OBJECT_0;
-      int dispatched = FALSE;
-      sigproc_printf ("awake");
-      /* A sigcatch semaphore has been signaled.  Scan the sigtodo
-       * array looking for any unprocessed signals.
-       */
-      pending_signals = 0;
-      int saw_sigchld = 0;
-      int dispatched_sigchld = 0;
-      for (int sig = -__SIGOFFSET; sig < NSIG; sig++)
-	{
-	  while (InterlockedDecrement (myself->getsigtodo(sig)) >= 0)
-	    {
-	      if (sig == SIGCHLD)
-		saw_sigchld = 1;
-	      if (sig > 0 && sig != SIGCONT && sig != SIGKILL && sig != SIGSTOP &&
-		  (sigismember (& myself->getsigmask (), sig) ||
-		   myself->process_state & PID_STOPPED))
-		{
-		  sigproc_printf ("sig %d blocked", sig);
-		  break;
-		}
-
-	      /* Found a signal to process */
-	      sigproc_printf ("processing signal %d", sig);
-	      switch (sig)
-		{
-		case __SIGFLUSH:
-		  /* just forcing the loop */
-		  break;
-
-		/* Internal signal to force a flush of strace data to disk. */
-		case __SIGSTRACE:
-		  // proc_strace ();	// Dump cached strace.prntf stuff.
-		  break;
-
-		/* Signalled from a child process that it has stopped */
-		case __SIGCHILDSTOPPED:
-		  sigproc_printf ("Received child stopped notification");
-		  dispatched |= sig_handle (SIGCHLD);
-		  if (proc_subproc (PROC_CHILDSTOPPED, 0))
-		    dispatched |= 1;
-		  break;
-
-		/* A normal UNIX signal */
-		default:
-		  sigproc_printf ("Got signal %d", sig);
-		  int wasdispatched = sig_handle (sig);
-		  dispatched |= wasdispatched;
-		  if (sig == SIGCHLD && wasdispatched)
-		    dispatched_sigchld = 1;
-		  goto nextsig;
-		}
-	    }
-	  /* Decremented too far. */
-	  if (InterlockedIncrement (myself->getsigtodo(sig)) > 0)
-	    pending_signals = 1;
-	nextsig:
-	  continue;
-	}
-
-      if (saw_sigchld && !dispatched_sigchld)
-	proc_subproc (PROC_CLEARWAIT, 0);
-      /* Signal completion of signal handling depending on which semaphore
-       * woke up the WaitForMultipleObjects above.
-       */
-      switch (rc)
-	{
-	case 0:
-	  SetEvent (sigcomplete_main);
-	  break;
-	case 1:
-	  ReleaseSemaphore (sigcomplete_nonmain, 1, NULL);
-	  break;
-	default:
-	  /* Signal from another process.  No need to synchronize. */
-	  break;
-	}
-
-      if (dispatched < 0)
-	pending_signals = 1;
-      sigproc_printf ("looping");
-    }
-
-  sigproc_printf ("done");
-  return 0;
-}
-
-/* Wait for subprocesses to terminate. Executes in a separate thread. */
-static DWORD WINAPI
-wait_subproc (VOID *)
-{
-  sigproc_printf ("starting");
-  int errloop = 0;
-
-  for (;;)
-    {
-      DWORD rc = WaitForMultipleObjects (nchildren + 1, events, FALSE,
-					 proc_loop_wait);
-      if (rc == WAIT_TIMEOUT)
-	if (!proc_loop_wait)
-	  break;			// Exiting
-	else
-	  continue;
-
-      if (rc == WAIT_FAILED)
-	{
-	  if (!proc_loop_wait)
-	    break;
-
-	  /* It's ok to get an ERROR_INVALID_HANDLE since another thread may have
-	     closed a handle in the children[] array.  So, we try looping a couple
-	     of times to stabilize. FIXME - this is not foolproof.  Probably, this
-	     thread should be responsible for closing the children. */
-	  if (++errloop < 10 && GetLastError () == ERROR_INVALID_HANDLE)
-	    continue;
-
-	  system_printf ("wait failed. nchildren %d, wait %d, %E",
-			nchildren, proc_loop_wait);
-
-	  for (int i = 0; i < nchildren + 1; i++)
-	    if ((rc = WaitForSingleObject (events[i], 0)) == WAIT_OBJECT_0 ||
-		rc == WAIT_TIMEOUT)
-	      continue;
-	    else
-	      system_printf ("event[%d] %p, %E", i, events[0]);
-	  break;
-	}
-
-      errloop = 0;
-      rc -= WAIT_OBJECT_0;
-      if (rc-- != 0)
-	(void)proc_subproc (PROC_CHILDTERMINATED, rc);
-      sigproc_printf ("looping");
-    }
-
-  ForceCloseHandle (events[0]);
-  events[0] = NULL;
-  sigproc_printf ("done");
-  return 0;
-}
-
-extern "C" {
-/* Provide a stack frame when calling WaitFor* functions */
-
-#undef WaitForSingleObject
-
-DWORD __stdcall
-WFSO (HANDLE hHandle, DWORD dwMilliseconds)
-{
-  DWORD ret;
-  sigframe thisframe (mainthread);
-  ret = WaitForSingleObject (hHandle, dwMilliseconds);
-  return ret;
-}
-
-#undef WaitForMultipleObjects
-
-DWORD __stdcall
-WFMO (DWORD nCount, CONST HANDLE *lpHandles, BOOL fWaitAll, DWORD dwMilliseconds)
-{
-  DWORD ret;
-  sigframe thisframe (mainthread);
-  ret = WaitForMultipleObjects (nCount, lpHandles, fWaitAll, dwMilliseconds);
-  return ret;
-}
-}
author	cvs2svn <>	2000-08-28 17:45:57 +0000
committer	cvs2svn <>	2000-08-28 17:45:57 +0000
commit	8ad728f6884cab228c9d1cb2c48f305ec0afdf1a (patch)
tree	94553fe0df19d986421b8954d4c90892c5597c3e /winsup/cygwin/sigproc.cc
parent	e0b0f635738c6bfce3bffe916ebf41908b4620fb (diff)
download	newlib-gh.zip newlib-gh.tar.gz newlib-gh.tar.bz2