(msgsnd): Call msleep with timeout value. Handle EWOULDBLOCK. Make
sure it's clear from where msleep has been called in debug output.
(msgrcv): Make sure it's clear from where msleep has been called in
debug output.
* Makefile.in (CYGWIN_OBJS): Remove smallprint.o.
(cygserver.exe): Remove strfuncs.o
(strfuncs.o): Drop rule.
* bsd_log.cc (_vlog): Use snprintf/vsnprintf instead of
__small_sprintf/__small_vsprintf.
* sysv_sem.cc (seminit): Use sys_malloc instead of malloc. Use
snprintf instead of __small_sprintf.
(semunload): Free the above allocated sema_mtx names here.
bool parameter.
* cygserver.conf: Add a description for the kern.ipc.shm_allow_removed
parameter.
* sysv_shm.cc (shminit): Set shm_allow_removed variable according to
kern.ipc.shm_allow_removed setting.
* sysv_sem.cc (__semctl): Check copyin return value (from 1.76).
* sysv_shm.cc (shminit): Actually use the iterating variable in the
for loop when trying to avoid overflow (from 1.102).
of security related variables from ipcinit here.
* bsd_helper.h (securityinit): Add prototype.
* cygserver.cc (main): Call securityinit right after wincap.init.
* process.cc (process_cache::process): Fix maximum process condition.
* README: Add description for new -p/--process-cache option.
* bsd_helper.cc (default_tun_check): Add kern.srv.process_cache_size
entry to tunable_params. Set max value of kern.srv.request_threads
to 310.
* cygserver.cc (SERVER_VERSION): Set to 1.20.
(print_usage): Print usage of new parameter -p.
(main): Add process cache parameter handling. Accomodate new max
value of request threads.
* cygserver.conf: Add kern.srv.process_cache_size tunable parameter.
Accomodate new max value of kern.srv.request_threads.
* process.cc: Fix a comment.
(process_cache::process_cache): Add max process cache size parameter.
Change _cache_add_trigger to manual reset event.
(struct pcache_wait_t): New struct used as parameter to
pcache_wait_thread.
(pcache_wait_thread): New thread function used for threaded process
cache.
(process_cache::wait_for_processes): Use threaded waiting if number
of processes to wait for is bigger than 62. Always check all processes
to avoid race under heavy load.
(process_cache::sync_wait_array): Remove useless assert. Reset
_cache_add_trigger right at the start since it's manual reset now.
Accomodate threaded waiting.
* process.h (process_cache::process_cache): Add max_procs parameter.
(process_cache::_max_process_count): New member.
(process_cache::_wait_array: Raise to allow up to 5 wait threads.
(process_cache::_process_array): Ditto.
(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_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.
(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.
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.
1.68: Reduce the overhead of semop() by using the kernel stack
instead of malloc'd memory to store the operations array if it
is small enough to fit.
1.69: Adjust the number of processes waiting on a semaphore properly
if we're woken up in the middle of sleeping.
process struct pointer, which isn't fixed under Cygwin.
(semexit_myhook): Ditto. Adjust debug print statements to print
Cygwin and Windows PIDs instead of process pointer under Cygwin.
(CYGWIN_LIB): Delete.
(cygserver.exe target): Add -L$(cygwin_build) to the link line to force linker
to use build tree version of the library. Remove specific inclusion of
libcygwin.a from the link line.
kern.ipc.msgtql. Raise max value for kern.ipc.msgseg to 65535.
* cygserver.conf: Add kern.ipc.msgmnb and kern.ipc.msgtql.
* sysv_msg.cc (msginit): Add TUNABLE_INT_FETCH call for
kern.ipc.msgmnb and kern.ipc.msgtql.
Christopher Faylor
Corinna Vinschen