From b5279ecc51ff751ccd052fbb7c20efd529575f7e Mon Sep 17 00:00:00 2001 From: cvs2svn <> Date: Tue, 18 Feb 2014 19:58:41 +0000 Subject: This commit was manufactured by cvs2svn to create tag 'cygwin-pre-user-db'. Sprout from cygwin-1_7_29-release-branchpoint 2014-02-18 19:58:40 UTC cvs2svn 'This commit was manufactured by cvs2svn to create branch 'cygwin-1_7_29' Cherrypick from master 2014-02-08 22:25:11 UTC Corinna Vinschen 'Fix ChangeLog': winsup/cygwin/ChangeLog winsup/cygwin/miscfuncs.cc winsup/cygwin/miscfuncs.h winsup/cygwin/mount.cc Delete: winsup/COPYING winsup/CYGWIN_LICENSE winsup/ChangeLog winsup/Makefile.common winsup/Makefile.in winsup/README winsup/acinclude.m4 winsup/aclocal.m4 winsup/autogen.sh winsup/c++wrap winsup/ccwrap winsup/config.guess winsup/config.sub winsup/configure winsup/configure.ac winsup/configure.cygwin winsup/cygserver/ChangeLog winsup/cygserver/ChangeLog.64bit winsup/cygserver/Makefile.in winsup/cygserver/README winsup/cygserver/aclocal.m4 winsup/cygserver/autogen.sh winsup/cygserver/bsd_helper.cc winsup/cygserver/bsd_helper.h winsup/cygserver/bsd_log.cc winsup/cygserver/bsd_log.h winsup/cygserver/bsd_mutex.cc winsup/cygserver/bsd_mutex.h 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winsup/testsuite/winsup.api/pthread/test.h winsup/testsuite/winsup.api/pthread/threadidafterfork.c winsup/testsuite/winsup.api/pthread/tsd1.c winsup/testsuite/winsup.api/resethand.c winsup/testsuite/winsup.api/samples/sample-fail.c winsup/testsuite/winsup.api/samples/sample-miscompile.c winsup/testsuite/winsup.api/samples/sample-pass.c winsup/testsuite/winsup.api/semtest.c winsup/testsuite/winsup.api/shmtest.c winsup/testsuite/winsup.api/sigchld.c winsup/testsuite/winsup.api/signal-into-win32-api.c winsup/testsuite/winsup.api/systemcall.c winsup/testsuite/winsup.api/user_malloc.c winsup/testsuite/winsup.api/waitpid.c winsup/testsuite/winsup.api/winsup.exp winsup/utils/COPYING.dumper winsup/utils/ChangeLog winsup/utils/ChangeLog-2000 winsup/utils/ChangeLog.64bit winsup/utils/Makefile.in winsup/utils/aclocal.m4 winsup/utils/autogen.sh winsup/utils/bloda.cc winsup/utils/configure winsup/utils/configure.ac winsup/utils/cygcheck.cc winsup/utils/cygpath.cc winsup/utils/cygwin-console-helper.cc winsup/utils/dump_setup.cc winsup/utils/dumper.cc winsup/utils/dumper.h winsup/utils/getconf.c winsup/utils/getfacl.c winsup/utils/kill.cc winsup/utils/ldd.cc winsup/utils/ldh.cc winsup/utils/loadlib.h winsup/utils/locale.cc winsup/utils/minidumper.cc winsup/utils/mkgroup.c winsup/utils/mkpasswd.c winsup/utils/module_info.cc winsup/utils/mount.cc winsup/utils/parse_pe.cc winsup/utils/passwd.c winsup/utils/path.cc winsup/utils/path.h winsup/utils/pldd.c winsup/utils/ps.cc winsup/utils/regtool.cc winsup/utils/setfacl.c winsup/utils/setmetamode.c winsup/utils/ssp.c winsup/utils/ssp.txt winsup/utils/strace.cc winsup/utils/testsuite.cc winsup/utils/testsuite.h winsup/utils/tzset.c winsup/utils/umount.cc winsup/utils/utils.xml winsup/utils/wide_path.h --- winsup/cygserver/threaded_queue.cc | 410 ------------------------------------- 1 file changed, 410 deletions(-) delete mode 100644 winsup/cygserver/threaded_queue.cc (limited to 'winsup/cygserver/threaded_queue.cc') diff --git a/winsup/cygserver/threaded_queue.cc b/winsup/cygserver/threaded_queue.cc deleted file mode 100644 index 53dd6fa11..000000000 --- a/winsup/cygserver/threaded_queue.cc +++ /dev/null @@ -1,410 +0,0 @@ -/* threaded_queue.cc - - Copyright 2001, 2002, 2003 Red Hat Inc. - - Written by Robert Collins - -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. */ - -#ifdef __OUTSIDE_CYGWIN__ -#include "woutsup.h" - -#include -#include -#include -#include -#include -#include -#include "threaded_queue.h" - -/*****************************************************************************/ - -/* queue_request */ - -queue_request::~queue_request () -{} - -/*****************************************************************************/ - -/* threaded_queue */ - -threaded_queue::threaded_queue (const size_t initial_workers) - : _workers_count (0), - _running (false), - _submitters_head (NULL), - _requests_count (0), - _requests_head (NULL), - _requests_sem (NULL) -{ - InitializeCriticalSection (&_queue_lock); - - // This semaphore's count is the number of requests on the queue. - // The maximum count (129792) is calculated as MAXIMUM_WAIT_OBJECTS - // multiplied by max. threads per process (2028?), which is (a few) - // more requests than could ever be pending with the current design. - - _requests_sem = CreateSemaphore (NULL, // SECURITY_ATTRIBUTES - 0, // Initial count - 129792, // Maximum count - NULL); // Anonymous - - if (!_requests_sem) - { - system_printf (("failed to create the request queue semaphore, " - "error = %lu"), - GetLastError ()); - abort (); - } - - create_workers (initial_workers); -} - -threaded_queue::~threaded_queue () -{ - if (_running) - stop (); - - debug_printf ("deleting all pending queue requests"); - queue_request *reqptr = _requests_head; - while (reqptr) - { - queue_request *const ptr = reqptr; - reqptr = reqptr->_next; - delete ptr; - } - - DeleteCriticalSection (&_queue_lock); - if (_requests_sem) - (void) CloseHandle (_requests_sem); -} - -/* FIXME: return success or failure rather than quitting */ -void -threaded_queue::add_submission_loop (queue_submission_loop *const submitter) -{ - assert (this); - assert (submitter); - assert (submitter->_queue == this); - assert (!submitter->_next); - - submitter->_next = - TInterlockedExchangePointer (&_submitters_head, submitter); - - if (_running) - submitter->start (); -} - -bool -threaded_queue::start () -{ - EnterCriticalSection (&_queue_lock); - const bool was_running = _running; - _running = true; - queue_submission_loop *loopptr = _submitters_head; - LeaveCriticalSection (&_queue_lock); - - if (!was_running) - { - debug_printf ("starting all queue submission loops"); - - while (loopptr) - { - queue_submission_loop *const ptr = loopptr; - loopptr = loopptr->_next; - ptr->start (); - } - } - - return was_running; -} - -bool -threaded_queue::stop () -{ - EnterCriticalSection (&_queue_lock); - const bool was_running = _running; - _running = false; - queue_submission_loop *loopptr = _submitters_head; - LeaveCriticalSection (&_queue_lock); - - if (was_running) - { - debug_printf ("stopping all queue submission loops"); - while (loopptr) - { - queue_submission_loop *const ptr = loopptr; - loopptr = loopptr->_next; - ptr->stop (); - } - - ReleaseSemaphore (_requests_sem, _workers_count, NULL); - while (_workers_count) - { - debug_printf (("waiting for worker threads to terminate: " - "%lu still running"), - _workers_count); - Sleep (1000); - } - debug_printf ("all worker threads have terminated"); - } - - return was_running; -} - -/* FIXME: return success or failure */ -void -threaded_queue::add (queue_request *const therequest) -{ - assert (this); - assert (therequest); - assert (!therequest->_next); - - if (!_workers_count) - { - system_printf ("warning: no worker threads to handle request!"); - // FIXME: And then what? - } - - EnterCriticalSection (&_queue_lock); - if (!_requests_head) - _requests_head = therequest; - else - { - /* Add to the queue end. */ - queue_request *reqptr = _requests_head; - for (; reqptr->_next; reqptr = reqptr->_next) - {} - assert (reqptr); - assert (!reqptr->_next); - reqptr->_next = therequest; - } - - _requests_count += 1; - assert (_requests_count > 0); - LeaveCriticalSection (&_queue_lock); - - (void) ReleaseSemaphore (_requests_sem, 1, NULL); -} - -/*static*/ DWORD WINAPI -threaded_queue::start_routine (const LPVOID lpParam) -{ - class threaded_queue *const queue = (class threaded_queue *) lpParam; - assert (queue); - - queue->worker_loop (); - - const long count = InterlockedDecrement (&queue->_workers_count); - assert (count >= 0); - - if (queue->_running) - debug_printf ("worker loop has exited; thread about to terminate"); - - return 0; -} - -/* Called from the constructor: so no need to be thread-safe until the - * worker threads start to be created; thus the interlocked increment - * of the `_workers_count' field. - */ - -void -threaded_queue::create_workers (const size_t initial_workers) -{ - assert (initial_workers > 0); - - for (unsigned int i = 0; i != initial_workers; i++) - { - const long count = InterlockedIncrement (&_workers_count); - assert (count > 0); - - DWORD tid; - const HANDLE hThread = - CreateThread (NULL, 0, start_routine, this, 0, &tid); - - if (!hThread) - { - system_printf ("failed to create thread, error = %lu", - GetLastError ()); - abort (); - } - - (void) CloseHandle (hThread); - } -} - -void -threaded_queue::worker_loop () -{ - while (true) - { - const DWORD rc = WaitForSingleObject (_requests_sem, INFINITE); - if (rc == WAIT_FAILED) - { - system_printf ("wait for request semaphore failed, error = %lu", - GetLastError ()); - return; - } - assert (rc == WAIT_OBJECT_0); - - EnterCriticalSection (&_queue_lock); - if (!_running) - { - LeaveCriticalSection (&_queue_lock); - return; - } - - assert (_requests_head); - queue_request *const reqptr = _requests_head; - _requests_head = reqptr->_next; - - _requests_count -= 1; - assert (_requests_count >= 0); - LeaveCriticalSection (&_queue_lock); - - assert (reqptr); - reqptr->process (); - delete reqptr; - } -} - -/*****************************************************************************/ - -/* queue_submission_loop */ - -queue_submission_loop::queue_submission_loop (threaded_queue *const queue, - const bool ninterruptible) - : _running (false), - _interrupt_event (NULL), - _queue (queue), - _interruptible (ninterruptible), - _hThread (NULL), - _tid (0), - _next (NULL) -{ - if (_interruptible) - { - // verbose: debug_printf ("creating an interruptible processing thread"); - - _interrupt_event = CreateEvent (NULL, // SECURITY_ATTRIBUTES - FALSE, // Auto-reset - FALSE, // Initially non-signalled - NULL); // Anonymous - - if (!_interrupt_event) - { - system_printf ("failed to create interrupt event, error = %lu", - GetLastError ()); - abort (); - } - } -} - -queue_submission_loop::~queue_submission_loop () -{ - if (_running) - stop (); - if (_interrupt_event) - (void) CloseHandle (_interrupt_event); - if (_hThread) - (void) CloseHandle (_hThread); -} - -bool -queue_submission_loop::start () -{ - assert (this); - assert (!_hThread); - - const bool was_running = _running; - - if (!was_running) - { - _running = true; - - _hThread = CreateThread (NULL, 0, start_routine, this, 0, &_tid); - if (!_hThread) - { - system_printf ("failed to create thread, error = %lu", - GetLastError ()); - abort (); - } - } - - return was_running; -} - -bool -queue_submission_loop::stop () -{ - assert (this); - assert (_hThread && _hThread != INVALID_HANDLE_VALUE); - - const bool was_running = _running; - - if (_running) - { - _running = false; - - if (_interruptible) - { - assert (_interrupt_event - && _interrupt_event != INVALID_HANDLE_VALUE); - - SetEvent (_interrupt_event); - - if (WaitForSingleObject (_hThread, 1000) == WAIT_TIMEOUT) - { - system_printf (("request loop thread %lu failed to shutdown " - "when asked politely: about to get heavy"), - _tid); - - if (!TerminateThread (_hThread, 0)) - { - system_printf (("failed to kill request loop thread %lu" - ", error = %lu"), - _tid, GetLastError ()); - abort (); - } - } - } - else - { - // FIXME: could wait to see if the request loop notices that - // the submission loop is no longer running and shuts down - // voluntarily. - - debug_printf ("killing request loop thread %lu", _tid); - - if (!TerminateThread (_hThread, 0)) - system_printf (("failed to kill request loop thread %lu" - ", error = %lu"), - _tid, GetLastError ()); - } - } - - return was_running; -} - -/*static*/ DWORD WINAPI -queue_submission_loop::start_routine (const LPVOID lpParam) -{ - class queue_submission_loop *const submission_loop = - (class queue_submission_loop *) lpParam; - assert (submission_loop); - - submission_loop->request_loop (); - - debug_printf ("submission loop has exited; thread about to terminate"); - - submission_loop->stop (); - - return 0; -} - -/*****************************************************************************/ -#endif /* __OUTSIDE_CYGWIN__ */ -- cgit v1.2.3