* cygthread.cc (cygthread::create): Fix incorrect use of name rather than
__name. * cygthread.h (cygthread::cygthread): Create versions which eliminate 'n' parameter. * dcrt0.cc (dll_crt0_1): Remove check for threadfunc_ix. Remove obsolete comments. Set process_state to active here. * fhandler_netdrive.cc (create_thread_and_wait): Use shortened cygthread constructor. * timer.cc (timer_tracker::settime): Ditto. * window.cc (HWND): Ditto. * fhandler_tty.cc: Use shortened cygthread constructor, where appropriate, throughout. * select.cc: Ditto. * fork.cc (frok::child): Remove wait_for_sigthread. (fork): Reformat if for slightly better clarity. * init.cc (dll_finished_loading): New variable. (dll_entry): Use dll_finished_loading to determine when we should call merge_threadfunc. * sigproc.cc (no_signals_available): Simplify by using my_readsig. (wait_sig_inited): Delete. (wait_sig): Define as void function. (pending_signals): Accommodate change to wait_sig definition. (wait_for_sigthread): Delete definition. (sigproc_init): Initialize signal pipe here, before wait_sig thread is created. Use void form of cygthread creation. (init_sig_pipe): Delete. (wait_sig): Return void rather than DWORD. Assume previous initialization of signal pipe. Set my_sendsig to NULL when exiting. * sigproc.h (wait_for_sigthread): Delete declaration.
This commit is contained in:
Christopher Faylor
parent
20973ec948
commit
b9874a0c14
@ -1,3 +1,35 @@
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2010-09-01 Christopher Faylor <me+cygwin@cgf.cx>
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* cygthread.cc (cygthread::create): Fix incorrect use of name rather
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than __name.
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* cygthread.h (cygthread::cygthread): Create versions which eliminate
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'n' parameter.
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* dcrt0.cc (dll_crt0_1): Remove check for threadfunc_ix. Remove
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obsolete comments. Set process_state to active here.
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* fhandler_netdrive.cc (create_thread_and_wait): Use shortened
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cygthread constructor.
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* timer.cc (timer_tracker::settime): Ditto.
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* window.cc (HWND): Ditto.
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* fhandler_tty.cc: Use shortened cygthread constructor, where
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appropriate, throughout.
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* select.cc: Ditto.
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* fork.cc (frok::child): Remove wait_for_sigthread.
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(fork): Reformat if for slightly better clarity.
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* init.cc (dll_finished_loading): New variable.
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(dll_entry): Use dll_finished_loading to determine when we should call
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merge_threadfunc.
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* sigproc.cc (no_signals_available): Simplify by using my_readsig.
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(wait_sig_inited): Delete.
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(wait_sig): Define as void function.
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(pending_signals): Accommodate change to wait_sig definition.
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(wait_for_sigthread): Delete definition.
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(sigproc_init): Initialize signal pipe here, before wait_sig thread is
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created. Use void form of cygthread creation.
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(init_sig_pipe): Delete.
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(wait_sig): Return void rather than DWORD. Assume previous
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initialization of signal pipe. Set my_sendsig to NULL when exiting.
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* sigproc.h (wait_for_sigthread): Delete declaration.
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2010-09-01 Corinna Vinschen <corinna@vinschen.de>
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* fhandler_netdrive.cc (fhandler_netdrive::readdir): Set d_type.
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@ -188,7 +188,7 @@ out:
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void
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cygthread::create ()
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{
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thread_printf ("name %s, id %p", name, id);
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thread_printf ("name %s, id %p, this %p", __name, id, this);
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HANDLE htobe;
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if (h)
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{
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@ -197,7 +197,7 @@ cygthread::create ()
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while (!thread_sync)
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yield ();
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SetEvent (thread_sync);
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thread_printf ("activated name '%s', thread_sync %p for thread %p", name, thread_sync, id);
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thread_printf ("activated name '%s', thread_sync %p for id %p", __name, thread_sync, id);
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htobe = h;
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}
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else
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@ -206,8 +206,8 @@ cygthread::create ()
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htobe = CreateThread (&sec_none_nih, 0, is_freerange ? simplestub : stub,
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this, 0, &id);
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if (!htobe)
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api_fatal ("CreateThread failed for %s - %p<%p>, %E", name, h, id);
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thread_printf ("created name '%s', thread %p, id %p", name, h, id);
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api_fatal ("CreateThread failed for %s - %p<%p>, %E", __name, h, id);
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thread_printf ("created name '%s', thread %p, id %p", __name, h, id);
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#ifdef DEBUGGING
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terminated = false;
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#endif
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@ -31,7 +31,8 @@ class cygthread
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bool is_freerange;
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static bool exiting;
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HANDLE notify_detached;
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void create () __attribute__ ((regparm(1)));
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bool standalone;
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void create () __attribute__ ((regparm(2)));
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public:
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bool terminate_thread ();
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static DWORD WINAPI stub (VOID *);
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@ -42,13 +43,27 @@ class cygthread
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void auto_release () {func = NULL;}
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void release (bool);
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cygthread (LPTHREAD_START_ROUTINE start, unsigned n, LPVOID param, const char *name, HANDLE notify = NULL)
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: __name (name), func (start), arglen (n), arg (param), notify_detached (notify)
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: __name (name), func (start), arglen (n), arg (param), notify_detached (notify), standalone (false)
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{
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create ();
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}
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cygthread (LPVOID_THREAD_START_ROUTINE start, LPVOID param, const char *name, HANDLE notify = NULL)
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: __name (name), func ((LPTHREAD_START_ROUTINE) start), arglen (0),
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arg (param), notify_detached (notify), standalone (true)
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{
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create ();
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/* This is a neverending/high-priority thread */
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::SetThreadPriority (h, THREAD_PRIORITY_HIGHEST);
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zap_h ();
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}
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cygthread (LPTHREAD_START_ROUTINE start, LPVOID param, const char *name, HANDLE notify = NULL)
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: __name (name), func (start), arglen (0), arg (param), notify_detached (notify), standalone (false)
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{
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create ();
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}
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cygthread (LPVOID_THREAD_START_ROUTINE start, unsigned n, LPVOID param, const char *name, HANDLE notify = NULL)
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: __name (name), func ((LPTHREAD_START_ROUTINE) start), arglen (n),
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arg (param), notify_detached (notify)
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arg (param), notify_detached (notify), standalone (true)
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{
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create ();
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/* This is a neverending/high-priority thread */
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@ -715,6 +715,9 @@ dll_crt0_0 ()
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GetCurrentProcess (), &hMainThread,
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0, false, DUPLICATE_SAME_ACCESS);
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myself->process_state |= PID_ACTIVE;
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myself->process_state &= ~PID_INITIALIZING;
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OpenProcessToken (GetCurrentProcess (), MAXIMUM_ALLOWED, &hProcToken);
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set_cygwin_privileges (hProcToken);
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@ -869,11 +872,6 @@ dll_crt0_1 (void *)
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uinfo_init (); /* initialize user info */
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wait_for_sigthread ();
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extern DWORD threadfunc_ix;
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if (!threadfunc_ix)
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system_printf ("internal error: couldn't determine location of thread function on stack. Expect signal problems.");
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/* Connect to tty. */
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tty::init_session ();
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@ -961,9 +959,6 @@ dll_crt0_1 (void *)
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MALLOC_CHECK;
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cygbench (__progname);
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/* Flush signals and ensure that signal thread is up and running. Can't
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do this for noncygwin case since the signal thread is blocked due to
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LoadLibrary serialization. */
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ld_preload ();
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/* Per POSIX set the default application locale back to "C". */
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_setlocale_r (_REENT, LC_CTYPE, "C");
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@ -136,7 +136,7 @@ create_thread_and_wait (int what, PVOID in, PVOID out, DWORD outsize,
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{
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netdriveinf ndi = { what, 0, in, out, outsize,
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CreateSemaphore (&sec_none_nih, 0, 2, NULL) };
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cygthread *thr = new cygthread (thread_netdrive, 0, &ndi, name);
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cygthread *thr = new cygthread (thread_netdrive, &ndi, name);
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if (thr->detach (ndi.sem))
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ndi.ret = ERROR_OPERATION_ABORTED;
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CloseHandle (ndi.sem);
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@ -89,9 +89,9 @@ fhandler_tty_master::init ()
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set_close_on_exec (true);
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new cygthread (process_input, 0, cygself, "ttyin");
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new cygthread (process_ioctl, 0, cygself, "ttyioctl");
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new cygthread (process_output, 0, cygself, "ttyout");
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new cygthread (process_input, cygself, "ttyin");
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new cygthread (process_ioctl, cygself, "ttyioctl");
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new cygthread (process_output, cygself, "ttyout");
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return 0;
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}
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@ -1805,7 +1805,7 @@ fhandler_pty_master::setup (bool ispty)
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errstr = "pty master control pipe";
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goto err;
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}
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master_thread = new cygthread (::pty_master_thread, 0, this, "pty_master");
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master_thread = new cygthread (::pty_master_thread, this, "pty_master");
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if (!master_thread)
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{
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errstr = "pty master control thread";
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@ -242,7 +242,6 @@ frok::child (volatile char * volatile here)
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ld_preload ();
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fixup_hooks_after_fork ();
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_my_tls.fixup_after_fork ();
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wait_for_sigthread ();
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cygwin_finished_initializing = true;
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return 0;
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}
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@ -619,9 +618,9 @@ fork ()
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}
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MALLOC_CHECK;
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if (ischild || res > 0)
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/* everything is ok */;
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else
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if (ischild)
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/* nothing to do */;
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else if (res < 0)
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{
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if (!grouped.error)
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syscall_printf ("fork failed - child pid %d, errno %d", grouped.child_pid, grouped.this_errno);
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@ -18,8 +18,8 @@ static DWORD _my_oldfunc;
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static char NO_COPY *search_for = (char *) cygthread::stub;
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unsigned threadfunc_ix[8] __attribute__((section (".cygwin_dll_common"), shared));
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extern cygthread *hwait_sig;
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static bool dll_finished_loading;
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#define OLDFUNC_OFFSET -1
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static void WINAPI
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@ -138,17 +138,18 @@ dll_entry (HANDLE h, DWORD reason, void *static_load)
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dll_crt0_0 ();
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_my_oldfunc = TlsAlloc ();
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dll_finished_loading = true;
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break;
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case DLL_PROCESS_DETACH:
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if (dynamically_loaded)
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shared_destroy ();
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break;
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case DLL_THREAD_ATTACH:
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if (hwait_sig)
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if (dll_finished_loading)
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munge_threadfunc ();
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break;
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case DLL_THREAD_DETACH:
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if (hwait_sig && (void *) &_my_tls > (void *) &wow64_test_stack_marker
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if (dll_finished_loading && (void *) &_my_tls > (void *) &wow64_test_stack_marker
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&& _my_tls.isinitialized ())
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_my_tls.remove (0);
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break;
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@ -962,7 +962,7 @@ pinfo::wait ()
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waiter_ready = false;
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/* Fire up a new thread to track the subprocess */
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cygthread *h = new cygthread (proc_waiter, 0, this, "proc_waiter");
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cygthread *h = new cygthread (proc_waiter, this, "proc_waiter");
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if (!h)
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sigproc_printf ("tracking thread creation failed for pid %d", (*this)->pid);
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else
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@ -635,7 +635,7 @@ start_thread_pipe (select_record *me, select_stuff *stuff)
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{
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pi->start = &stuff->start;
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pi->stop_thread = false;
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pi->thread = new cygthread (thread_pipe, 0, pi, "select_pipe");
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pi->thread = new cygthread (thread_pipe, pi, "select_pipe");
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me->h = *pi->thread;
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if (!me->h)
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return 0;
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@ -1140,7 +1140,7 @@ start_thread_serial (select_record *me, select_stuff *stuff)
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select_serial_info *si = new select_serial_info;
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si->start = &stuff->start;
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si->stop_thread = false;
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si->thread = new cygthread (thread_serial, 0, si, "select_serial");
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si->thread = new cygthread (thread_serial, si, "select_serial");
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me->h = *si->thread;
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stuff->device_specific_serial = si;
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}
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@ -1456,7 +1456,7 @@ start_thread_socket (select_record *me, select_stuff *stuff)
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stuff->device_specific_socket = si;
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si->start = &stuff->start;
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select_printf ("stuff_start %p", &stuff->start);
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si->thread = new cygthread (thread_socket, 0, si, "select_socket");
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si->thread = new cygthread (thread_socket, si, "select_socket");
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me->h = *si->thread;
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return 1;
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}
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@ -1699,7 +1699,7 @@ start_thread_mailslot (select_record *me, select_stuff *stuff)
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select_mailslot_info *mi = new select_mailslot_info;
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mi->start = &stuff->start;
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mi->stop_thread = false;
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mi->thread = new cygthread (thread_mailslot, 0, mi, "select_mailslot");
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mi->thread = new cygthread (thread_mailslot, mi, "select_mailslot");
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me->h = *mi->thread;
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if (!me->h)
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return 0;
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@ -33,7 +33,7 @@ details. */
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#define WSSC 60000 // Wait for signal completion
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#define WPSP 40000 // Wait for proc_subproc mutex
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#define no_signals_available(x) (!hwait_sig || (hwait_sig == INVALID_HANDLE_VALUE) || ((x) && myself->exitcode & EXITCODE_SET) || (&_my_tls == _sig_tls) || !cygwin_finished_initializing)
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#define no_signals_available(x) (!my_sendsig ||( myself->exitcode & EXITCODE_SET) || (&_my_tls == _sig_tls) || !cygwin_finished_initializing)
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#define NPROCS 256
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@ -55,9 +55,6 @@ HANDLE NO_COPY signal_arrived; // Event signaled when a signal has
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HANDLE NO_COPY sigCONT; // Used to "STOP" a process
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cygthread NO_COPY *hwait_sig;
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Static HANDLE wait_sig_inited; // Control synchronization of
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// message queue startup
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Static bool sigheld; // True if holding signals
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Static int nprocs; // Number of deceased children
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@ -78,7 +75,7 @@ static int __stdcall checkstate (waitq *) __attribute__ ((regparm (1)));
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static __inline__ bool get_proc_lock (DWORD, DWORD);
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static bool __stdcall remove_proc (int);
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static bool __stdcall stopped_or_terminated (waitq *, _pinfo *);
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static DWORD WINAPI wait_sig (VOID *arg);
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static void WINAPI wait_sig (VOID *arg);
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|
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/* wait_sig bookkeeping */
|
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@ -97,7 +94,7 @@ public:
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sigpacket *save () const {return curr;}
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void restore (sigpacket *saved) {curr = saved;}
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friend void __stdcall sig_dispatch_pending (bool);
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friend DWORD WINAPI wait_sig (VOID *arg);
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friend void WINAPI wait_sig (VOID *arg);
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};
|
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Static pending_signals sigq;
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@ -127,20 +124,6 @@ signal_fixup_after_exec ()
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}
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}
|
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|
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void __stdcall
|
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wait_for_sigthread ()
|
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{
|
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sigproc_printf ("wait_sig_inited %p", wait_sig_inited);
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HANDLE hsig_inited = wait_sig_inited;
|
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WaitForSingleObject (hsig_inited, INFINITE);
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wait_sig_inited = NULL;
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myself->sendsig = my_sendsig;
|
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myself->process_state |= PID_ACTIVE;
|
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myself->process_state &= ~PID_INITIALIZING;
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ForceCloseHandle1 (hsig_inited, wait_sig_inited);
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sigproc_printf ("process/signal handling enabled, state %p", myself->process_state);
|
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}
|
||||
|
||||
/* Get the sync_proc_subproc muto to control access to
|
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* children, proc arrays.
|
||||
* Attempt to handle case where process is exiting as we try to grab
|
||||
@ -468,23 +451,21 @@ create_signal_arrived ()
|
||||
}
|
||||
|
||||
/* Signal thread 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. */
|
||||
This routine starts the signal handling thread. */
|
||||
void __stdcall
|
||||
sigproc_init ()
|
||||
{
|
||||
wait_sig_inited = CreateEvent (&sec_none_nih, TRUE, FALSE, NULL);
|
||||
ProtectHandle (wait_sig_inited);
|
||||
|
||||
char char_sa_buf[1024];
|
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PSECURITY_ATTRIBUTES sa_buf = sec_user_nih ((PSECURITY_ATTRIBUTES) char_sa_buf, cygheap->user.sid());
|
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for (int i = 5; i > 0 && !CreatePipe (&my_readsig, &my_sendsig, sa_buf, 0); i--)
|
||||
if (i == 1)
|
||||
api_fatal ("couldn't create signal pipe, %E");
|
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ProtectHandle (my_readsig);
|
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myself->sendsig = my_sendsig;
|
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new cygthread (wait_sig, cygself, "sig");
|
||||
/* sync_proc_subproc is used by proc_subproc. It serialises
|
||||
access to the children and proc arrays. */
|
||||
sync_proc_subproc.init ("sync_proc_subproc");
|
||||
|
||||
hwait_sig = new cygthread (wait_sig, 0, cygself, "sig");
|
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hwait_sig->zap_h ();
|
||||
}
|
||||
|
||||
/* Called on process termination to terminate signal and process threads.
|
||||
@ -566,13 +547,9 @@ sig_send (_pinfo *p, siginfo_t& si, _cygtls *tls)
|
||||
{
|
||||
if (no_signals_available (si.si_signo != __SIGEXIT))
|
||||
{
|
||||
sigproc_printf ("my_sendsig %p, myself->sendsig %p, exit_state %d",
|
||||
my_sendsig, myself->sendsig, exit_state);
|
||||
set_errno (EAGAIN);
|
||||
goto out; // Either exiting or not yet initializing
|
||||
}
|
||||
if (wait_sig_inited)
|
||||
wait_for_sigthread ();
|
||||
wait_for_completion = p != myself_nowait && _my_tls.isinitialized () && !exit_state;
|
||||
p = myself;
|
||||
}
|
||||
@ -1150,37 +1127,14 @@ pending_signals::next ()
|
||||
return res;
|
||||
}
|
||||
|
||||
/* Called separately to allow stack space reutilization by wait_sig.
|
||||
This function relies on the fact that it will be called after cygheap
|
||||
has been set up. For the case of non-dynamic DLL initialization this
|
||||
means that it relies on the implicit serialization guaranteed by being
|
||||
run as part of DLL_PROCESS_ATTACH. */
|
||||
static void __attribute__ ((noinline))
|
||||
init_sig_pipe()
|
||||
{
|
||||
char char_sa_buf[1024];
|
||||
PSECURITY_ATTRIBUTES sa_buf = sec_user_nih ((PSECURITY_ATTRIBUTES) char_sa_buf, cygheap->user.sid());
|
||||
for (int i = 5; i > 0 && !CreatePipe (&my_readsig, &my_sendsig, sa_buf, 0); i--)
|
||||
if (i == 1)
|
||||
api_fatal ("couldn't create signal pipe, %E");
|
||||
ProtectHandle (my_readsig);
|
||||
}
|
||||
|
||||
|
||||
/* Process signals by waiting for signal data to arrive in a pipe.
|
||||
Set a completion event if one was specified. */
|
||||
static DWORD WINAPI
|
||||
static void WINAPI
|
||||
wait_sig (VOID *)
|
||||
{
|
||||
init_sig_pipe ();
|
||||
/* Initialization */
|
||||
SetThreadPriority (GetCurrentThread (), WAIT_SIG_PRIORITY);
|
||||
|
||||
_sig_tls = &_my_tls;
|
||||
sigCONT = CreateEvent (&sec_none_nih, FALSE, FALSE, NULL);
|
||||
|
||||
SetEvent (wait_sig_inited);
|
||||
|
||||
_sig_tls = &_my_tls;
|
||||
sigproc_printf ("entering ReadFile loop, my_readsig %p, my_sendsig %p",
|
||||
my_readsig, my_sendsig);
|
||||
|
||||
@ -1253,7 +1207,7 @@ wait_sig (VOID *)
|
||||
}
|
||||
break;
|
||||
case __SIGEXIT:
|
||||
hwait_sig = (cygthread *) INVALID_HANDLE_VALUE;
|
||||
my_sendsig = NULL;
|
||||
sigproc_printf ("saw __SIGEXIT");
|
||||
break; /* handle below */
|
||||
default:
|
||||
|
||||
@ -81,7 +81,6 @@ bool __stdcall pid_exists (pid_t) __attribute__ ((regparm(1)));
|
||||
int __stdcall sig_send (_pinfo *, siginfo_t&, class _cygtls *tls = NULL) __attribute__ ((regparm (3)));
|
||||
int __stdcall sig_send (_pinfo *, int) __attribute__ ((regparm (2)));
|
||||
void __stdcall signal_fixup_after_exec ();
|
||||
void __stdcall wait_for_sigthread ();
|
||||
void __stdcall sigalloc ();
|
||||
void __stdcall create_signal_arrived ();
|
||||
|
||||
@ -92,7 +91,5 @@ extern char myself_nowait_dummy[];
|
||||
|
||||
extern struct sigaction *global_sigs;
|
||||
|
||||
#define WAIT_SIG_PRIORITY THREAD_PRIORITY_NORMAL
|
||||
|
||||
#define myself_nowait ((_pinfo *) myself_nowait_dummy)
|
||||
#endif /*_SIGPROC_H*/
|
||||
|
||||
@ -253,7 +253,7 @@ timer_tracker::settime (int in_flags, const itimerspec *value, itimerspec *ovalu
|
||||
syncthread = CreateEvent (&sec_none_nih, TRUE, FALSE, NULL);
|
||||
else
|
||||
ResetEvent (syncthread);
|
||||
new cygthread (timer_thread, 0, this, "itimer", syncthread);
|
||||
new cygthread (timer_thread, this, "itimer", syncthread);
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
@ -111,7 +111,7 @@ HWND ()
|
||||
if (!hwnd)
|
||||
{
|
||||
_lock.upforgrabs ();
|
||||
cygthread *h = new cygthread (::winthread, 0, this, "win");
|
||||
cygthread *h = new cygthread (::winthread, this, "win");
|
||||
h->SetThreadPriority (THREAD_PRIORITY_HIGHEST);
|
||||
h->zap_h ();
|
||||
lock ();
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user