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* Revert "cygserver: Revamp thread sleep handling"Corinna Vinschen2017-06-201-49/+95
| | | | This reverts commit b80b2c011936f7f075b76b6e59f9e8a5ec49caa1.
* cygserver: Speed up non-debug scenarioCorinna Vinschen2017-03-241-3/+3
| | | | | | | | | _log/_vlog were always called so we always had a function call hit even if we're not debugging. Expand on the debugging macros so the decision to call _log/_vlog is done in the caller already. Also, make a log level difference between syscall_printf and system_printf. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* cygserver: Small code cleanupCorinna Vinschen2017-03-241-1/+1
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* cygserver: Revamp thread sleep handlingCorinna Vinschen2017-03-241-95/+49
| | | | | | | | | | | | | | | | | | | | The current implementation is a very simple approach to implement a statically sized sleep queue. The problem is that this code requires a certain amount of synchronization because the slots in the queue are used dynamically. To top it off, the Event objects used for sync'ing are created and destroyed on demand. This is complicated, slow, and error prone. There's also a blatant bug here: The number of slots in the queue was wrongly computed in size. It was too small if XSI IPC was used a lot. Make the code more robust. Let the queue have the right size. Every slot is now used for a specific IPC object. All sync objects (switched to Semaphores) are only created when first required, but never destroyed. This reduces the usage of a critical section to the creation of a new sync object. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout optioncygwin-2_5_2-releaseCorinna Vinschen2016-06-231-2/+0
| | | | | | | | | | | | | | Bump GPLv2+ to GPLv3+ for some files, clarify BSD 2-clause. Everything else stays under GPLv3+. New Linking Exception exempts resulting executables from LGPLv3 section 4. Add CONTRIBUTORS file to keep track of licensing. Remove 'Copyright Red Hat Inc' comments. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* * bsd_helper.h: Throughout, convert "struct thread" to "class thread".Corinna Vinschen2015-01-191-4/+3
| | | | | | | | | | | | | | | | | | | * bsd_mutex.cc (_msleep): Fetch signal_arrived handle from thread's ipcblk. * process.h (class process): Drop _signal_arrived and align methods. (process_cache::process): Drop signal_arrived parameter. * process.cc (process::process): Ditto. Drop related code. (process::~process): Drop closing signal_arrived handle. (process_cache::process): Drop signal_arrived parameter in call to process::process. (thread::dup_signal_arrived): New method duplicating thread's signal_arrived handle. (thread::close_signal_arrived): New method closing thread's signal_arrived handle. * msg.cc (client_request_msg::serve): Drop signal_arrived parameter from call to process_cache::process. Use thread constructor to initialize td. * sem.cc (client_request_sem::serve): Ditto. * shm.cc (client_request_shm::serve): Ditto.
* * bsd_mutex.cc (msleep_sync_array::~msleep_sync_array): New destructorCorinna Vinschen2014-05-191-0/+2
| | | | to make Coverity happy (CID 59838).
* * Throughout, fix format specifiers in debug statements to accommodateCorinna Vinschen2014-03-121-9/+9
| | | | x86_64.
* * Merge in cygwin-64bit-branch.Corinna Vinschen2013-04-231-3/+3
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* * bsd_helper.cc: Replace %E __small_printf format specifier with %luCorinna Vinschen2008-02-061-8/+10
| | | | | | | and call to GetLastError throughout. * bsd_mutex.cc: Ditto. * sysv_sem.cc (semget): Replace %X __small_printf format specifier with %llx.
* Throughout remove using wincap.Corinna Vinschen2007-02-231-7/+4
| | | | | | | | | | | * Makefile.in (OBJS): Remove wincap.o. * README: Don't mention 9x. * bsd_mutex.cc (_mtx_unlock): Drop checking for 9x error codes. * cygserver.cc (server_submission_loop::request_loop): Add FIXME comment. * wincap.cc: Remove. * wincap.h: Remove. * woutsup.h: Don't include wincap.h.
* * bsd_mutex.cc (msleep_cnt): Remove.Corinna Vinschen2005-04-081-71/+123
| | | | | | | | | | | | | (msleep_max_cnt): Remove. (msleep_arr): Remove. (class msleep_sync_array): New class to encapsulate msleep/wakeup thread synchronization. (msleep_sync): New object pointer. (msleep_init): Initialize new msleep_sync object. (_mutex): Just call msleep_sync->enter() and msleep_sync->leave() for thread synchronization. Improve debug output a bit more. (wakeup): Just call msleep_sync->wakeup(). (wakeup_all): Whitespace fix.
* * bsd_helper.cc (ipcexit_hookthread): Fix whitespace and handle leak.Corinna Vinschen2005-04-061-135/+105
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * bsd_mutex.cc: Include stdlib.h, sys/msg.h and sys/sem.h. (mtx_init): Initialize lock counter to 0. (_mtx_lock): Increment and log mutex lock counter. (mtx_owned): Add winpid argument. Return true only if mutex is actually owned by process winpid. (_mtx_assert): Add winpid argument accordingly. (_mtx_unlock): Log owner and lock count. (MSLEEP_MUTEX): Remove. (MSLEEP_SEM): Ditto. (MSLEEP_EVENT): Ditto. (msleep_event_name): Ditto. (msleep_cs): New global critical section. (msleep_cnt): New global variable indicating msleep record usage. (msleep_max_cnt): New global variable indicating msleep record size. (msleep_arr): New global pointer to msleep records. (msleep_init): Initialize msleep_cs. Allocate msleep_arr array. (_msleep): Rewrite using new msleep_cs/msleep_arr based thread synchronization. Don't be shy with debug output. (wakeup): Rewrite using new msleep_cs/msleep_arr based thread synchronization. * bsd_mutex.h (struct mtx): Add lock counter for better debugging. (mtx_owned): Declare with winpid argument. (_mtx_assert): Ditto. (mtx_assert): Define with winpid argument. * cygserver.cc (version): Remove. (SERVER_VERSION): New define, decoupling server version information from source code control system. (print_version): Simplify printing server version. * process.cc (process::process): Fix wrong bracketing (and handle leak). (process::~process): Only try to close _signal_arrived if valid. * sysv_sem.cc: Include sys/smallprint.h. (semundo_clear): Define with additional struct thread pointer argument. Accomodate throughout. (SEMUNDO_LOCKASSERT): Define with winpid argument. Accomodate throughout. (struct sem_undo): Define un_proc as pid_t on Cygwin. Accomodate throughout. (seminit): Improve debugging by adding the semid to the mutex name. (semget): Correctly print key value as 64 bit hex value in debug output. (semexit_myhook): Remove Cygwin specific unlocking of mutexes owned by exiting process. Keep semaphore global lock throughout whole function to avoid races. * sysv_shm.cc (GIANT_REQUIRED): Define empty on Cygwin. We know that Giant is locked.
* * bsd_mutex.cc (_msleep): Whitespace fix.Corinna Vinschen2005-04-011-2/+2
| | | | | * process.cc (process::process): Handle invalid signal_arrived values more gracefully.
* * bsd_mutex.cc: Include limits.h.Corinna Vinschen2004-12-301-22/+113
| | | | | | | | | | | (MSLEEP_MUTEX): New define for third parameter to msleep_event_name. (MSLEEP_SEM): Ditto. (MSLEEP_EVENT): Ditto. (msleep_event_name): Add third parameter to allow multiple synchronization objects per ident. (_msleep): Implement new synchronization technique to make sure that all threads have been woken up by a corresponding wakeup call. (wakeup): Ditto.
* * bsd_mutex.cc (_msleep): Simplify event creation. Revert change fromCorinna Vinschen2004-10-041-5/+1
| | | | | | | | | | | | | 2004-08-24. It should be unnecessary now. * msg.cc (client_request_msg::serve): Release process critical section as early as possible. * sem.cc (client_request_sem::serve): Ditto. * shm.cc (client_request_shm::serve): Ditto. * process.cc: Use hold and release method calls instead of EnterCriticalSection/LeaveCriticalSection calls throughout. * process.h (_hold): Rename from hold. Take filename and linenumber parameter for logging. Define matching hold macro. (release): Ditto.
* Fix copyright throughout.Corinna Vinschen2004-09-151-2/+2
| | | | | | | | | | | | | Eliminate use of _impure_ptr outside Cygwin. * bsd_helper.cc: Include errno.h instead of cygerrno.h. * bsd_mutex.cc : Ditto. * client.cc: Ditto. * cygserver.cc: Ditto. * process.cc: Don't build functions inside Cygwin. Don't include cygerrno.h. Don't set errno. * transport_pipes.cc (SET_ERRNO): New define. Use througout. * transport_sockets.cc (SET_ERRNO): Ditto. (GET_ERRNO): Ditto.
* * bsd_mutex.cc (_msleep): Disable resetting event object for now.Corinna Vinschen2004-09-061-0/+7
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* * bsd_mutex.cc (_msleep): Release process object while waiting.Corinna Vinschen2004-08-241-0/+2
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* * bsd_mutex.cc (_msleep): Reset event object and close it beforeCorinna Vinschen2004-07-301-2/+4
| | | | entering mutex. Turn order of conditional for better readability.
* * bsd_helper.cc: Whitespace fixes.Corinna Vinschen2004-07-201-3/+3
| | | | * bsd_mutex.cc: Ditto.
* * bsd_mutex.cc (win_priority): Actually calculate p from priority.Corinna Vinschen2004-07-191-1/+1
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* * bsd_mutex.cc (win_priority): Move to msleep helper function section.Corinna Vinschen2004-02-071-32/+38
| | | | | (set_priority): Ditto. Fix formatting. (_msleep): Cleanup obj formatting. Rearrange obj order.
* * bsd_mutex.cc (_msleep): Handle PCATCH using signal_arrived event.Corinna Vinschen2004-02-061-3/+11
| | | | | | | | | | | | | | | | * client.cc: Include sigproc.h. * msg.cc (client_request_msg::serve): Accomodate third parameter to process::process. * sem.cc (client_request_sem::serve): Ditto. * shm.cc (client_request_shm::serve): Ditto. * process.cc (process::process): Duplicate signal_arrived into Cygserver process space. (process::~process): Close _signal_arrived handle. (process_cache::process): Add signal_arrived handling. * process.h (process::process): Add signal_arrived parameter. (process:signal_arrived): New read accessor. (process:_signal_arrived): New member. (process_cache::process): Add signal_arrived parameter.
* Don't use safe_new but new throughout. Fix copyright datesCorinna Vinschen2003-11-191-0/+253
throughout. * Makefile.in: Accomodate all new files and name changes. Add a *.d dependency. (sbindir): Add. (etcdir): Drop in favor of more appropriate sysconfdir definition. (sysconfdir): Add. (CXXFLAGS): Add -MMD flag. Add SYSCONFDIR definition. (.SUFFIXES): Add. (install): Add action items. (libclean): New target. (fullclean): Ditto. * bsd_helper.cc: New file. * bsd_helper.h: Ditto. * bsd_log.cc: Ditto. * bsd_log.h: Ditto. * bsd_mutex.cc: Ditto. * bsd_mutex.h: Ditto. * client.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. (client_request::handle_request): Add Message Queue and Semaphore handling. * cygserver.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. Use new debug/log/panic logging functions. (DEF_CONFIG_FILE): New definition for configuration file. Use throughout. (getfunc): Remove. (__cygserver__printf): Remove. (client_request_attach_tty::serve): Return error if impersonation fails. (print_usage): Pump up help message. (print_version): Add output of default configuration file. (main): Accommodate new options. Allow overwrite of threading options from config file. Call several new initialization functions. Drop printing dots. Don't define SIGHANDLE inline. * cygserver.conf: New file. * cygserver_process.h: Rename to process.h. * cygserver_transport.h: Rename to transport.h. * cygserver_transport_pipes.h: Rename to transport_pipes.h. * cygserver_transport_sockets.h: Rename to transport_sockets.h. * msg.cc: Rewrite. * sem.cc: Rewrite. * shm.cc: Rewrite. * sysv_msg.cc: New file, derived from FreeBSD version 1.52. * sysv_sem.cc: New file, derived from FreeBSD version 1.66. * sysv_shm.cc: New file, derived from FreeBSD version 1.89. * threaded_queue.cc: Rearrange to build as less as possible if __INSIDE_CYGWIN__. * transport.cc (transport_layer_base::impersonate_client): Define bool. (transport_layer_base::revert_to_self): Ditto. * transport.h (transport_layer_base::impersonate_client): Declare bool. (transport_layer_base::revert_to_self): Ditto. * transport_pipes.cc (transport_layer_pipes::transport_layer_pipes): Don't call init_security. (init_security): Remove. (transport_layer_pipes::accept): Use global sec_all_nih. (transport_layer_pipes::connect): Ditto. (transport_layer_pipes::impersonate_client): Define bool. (transport_layer_pipes::revert_to_self): Ditt. * transport_pipes.h (transport_layer_pipes::impersonate_client): Declare bool. (transport_layer_pipes::revert_to_self): Ditto. * woutsup.h: Include bsd compatibility headers. (SIGHANDLE): Add definition. (__cygserver__printf): Remove definition. (__noop_printf): Ditto. (debug_printf): Define using debug. (syscall_printf): Define using log. (system_printf): Ditto. Drop all other _printf definitions.
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