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Contributed by - Alexander Terekhov.
* condvar.c: Fixed lost signal bug reported by Timur Aydin
(taydin@snet.net).
[RPJ (me) didn't translate the original algorithm
correctly.]
* semaphore.c: Added sem_post_multiple; this is a useful
routine, but it doesn't appear to be standard. For now it's
not an exported function.
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* create.c (pthread_create): Add priority inheritance
attributes.
* mutex.c (pthread_mutex_lock): Remove some overhead for
PTHREAD_MUTEX_NORMAL mutex types. Specifically, avoid
calling pthread_self() and pthread_equal() to check/set
the mutex owner. Introduce a new pseudo owner for this
type. Test results suggest increases in speed of up to
90% for non-blocking locks.
This is the default type of mutex used internally by other
synchronising objects, ie. condition variables and
read-write locks. The test rwlock7.c shows about a
30-35% speed increase over snapshot 2001-06-06. The
price of this is that the application developer
must ensure correct behaviour, or explicitly set the
mutex to a safer type such as PTHREAD_MUTEX_ERRORCHECK.
For example, PTHREAD_MUTEX_NORMAL (or PTHREAD_MUTEX_DEFAULT)
type mutexes will not return an error if a thread which is not
the owner calls pthread_mutex_unlock. The call will succeed
in unlocking the mutex if it is currently locked, but a
subsequent unlock by the true owner will then fail with EPERM.
This is however consistent with some other implementations.
(pthread_mutex_unlock): Likewise.
(pthread_mutex_trylock): Likewise.
(pthread_mutex_destroy): Likewise.
* attr.c (pthread_attr_init): PTHREAD_EXPLICIT_SCHED is the
default inheritance attribute; THREAD_PRIORITY_NORMAL is
the default priority for new threads.
* sched.c (pthread_attr_setschedpolicy): Added routine.
(pthread_attr_getschedpolicy): Added routine.
(pthread_attr_setinheritsched): Added routine.
(pthread_attr_getinheritsched): Added routine.
* pthread.h (sched_rr_set_interval): Added as a macro;
returns -1 with errno set to ENOSYS.
2001-06-23 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
*sched.c (pthread_attr_setschedparam): Add priority range
check.
(sched_setscheduler): New function; checks for a valid
pid and policy; checks for permission to set information
in the target process; expects pid to be a Win32 process ID,
not a process handle; the only scheduler policy allowed is
SCHED_OTHER.
(sched_getscheduler): Likewise, but checks for permission
to query.
* pthread.h (SCHED_*): Moved to sched.h as defined in the
POSIX standard.
* sched.h (SCHED_*): Moved from pthread.h.
(pid_t): Defined if necessary.
(sched_setscheduler): Defined.
(sched_getscheduler): Defined.
* pthread.def (sched_setscheduler): Exported.
(sched_getscheduler): Likewise.
2001-06-23 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
Contributed by - Ralf Brese <Ralf.Brese@pdb4.siemens.de>
* create.c (pthread_create): Set thread priority from
thread attributes.
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* Several: Fix typos from scripted edit session
yesterday.
* nonportable.c (pthread_mutexattr_setforcecs_np):
Moved this function from mutex.c.
(pthread_getw32threadhandle_np): New function to
return the win32 thread handle that the POSIX
thread is using.
* mutex.c (pthread_mutexattr_setforcecs_np):
Moved to new file "nonportable.c".
* pthread.h (PTW32_BUILD): Only redefine __except
and catch compiler keywords if we aren't building
the library (ie. PTW32_BUILD is not defined) -
this is safer than defining and then undefining
if not building the library.
* implement.h: Remove __except and catch undefines.
* Makefile (CFLAGS): Define PTW32_BUILD.
* GNUmakefile (CFLAGS): Define PTW32_BUILD.
* All appropriate: Change Pthread_exception* to
ptw32_exception* to be consistent with internal
identifier naming.
* private.c (ptw32_throw): New function to provide
a generic exception throw for all internal
exceptions and EH schemes.
(ptw32_threadStart): pthread_exit() value is now
returned via the thread structure exitStatus
element.
* exit.c (pthread_exit): pthread_exit() value is now
returned via the thread structure exitStatus
element.
* cancel.c (ptw32_cancel_self): Now uses ptw32_throw.
(pthread_setcancelstate): Ditto.
(pthread_setcanceltype): Ditto.
(pthread_testcancel): Ditto.
(pthread_cancel): Ditto.
* misc.c (CancelableWait): Ditto.
* exit.c (pthread_exit): Ditto.
* All applicable: Change PTW32_ prefix to
PTW32_ prefix to remove leading underscores
from private library identifiers.
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* sched.c (sched_get_priority_max): Handle different WinCE and
Win32 priority values together.
(sched_get_priority_min): Ditto.
- Tristan Savatier <tristan@mpegtv.com>
* create.c (pthread_create): Force new threads to wait until
pthread_create has the new thread's handle; we also retain
a local copy of the handle for internal use until
pthread_create returns.
* private.c (_pthread_threadStart): Initialise ei[].
(_pthread_threadStart): When beginthread is used to start the
thread, force waiting until the creator thread had the
thread handle.
* cancel.c (_pthread_cancel_thread): Include context switch
code for defined(_X86_) environments in addition to _M_IX86.
* rwlock.c (pthread_rwlock_destroy): Assignment changed
to avoid compiler warning.
* private.c (_pthread_get_exception_services_code): Cast
NULL return value to avoid compiler warning.
* cleanup.c (pthread_pop_cleanup): Initialise "cleanup" variable
to avoid compiler warnings.
* misc.c (_pthread_new): Change "new" variable to "t" to avoid
confusion with the C++ keyword of the same name.
* condvar.c (cond_wait_cleanup): Initialise lastWaiter variable.
(cond_timedwait): Remove unused local variables. to avoid
compiler warnings.
* dll.c (dllMain): Remove 2000-07-21 change - problem
appears to be in pthread_create().
2000-07-22 Ross Johnson <rpj@special.ise.canberra.edu.au>
* tsd.c (pthread_key_create): If a destructor was given
and the pthread_mutex_init failed, then would try to
reference a NULL pointer (*key); eliminate this section of
code by using a dynamically initialised mutex
(PTHREAD_MUTEX_INITIALIZER).
* tsd.c (pthread_setspecific): Return an error if
unable to set the value; simplify cryptic conditional.
* tsd.c (pthread_key_delete): Locking threadsLock relied
on mutex_lock returning an error if the key has no destructor.
ThreadsLock is only initialised if the key has a destructor.
Making this mutex a static could reduce the number of mutexes
used by an application since it is actually created only at
first use and it's often destroyed soon after.
2000-07-22 Ross Johnson <rpj@special.ise.canberra.edu.au>
* FAQ: Added Q5 and Q6.
tests/ChangeLog:
2000-07-25 Ross Johnson <rpj@special.ise.canberra.edu.au>
* runtest.bat: modified to work under W98.
* runall.bat: Add new tests; modified to work under W98.
It was ok under NT.
* Makefile: Add new tests.
* exception1.c: New; Test passing exceptions back to the
application and retaining library internal exceptions.
* join0.c: New; Test a single join.
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* *.c (comments): Remove individual attributions - these are
documented sufficiently elsewhere.
* implement.h (pthread.h): Remove extraneous include.
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Sun Apr 4 11:05:57 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* sched.c (sched.h): Include.
* sched.h: New file for POSIX 1b scheduling.
* pthread.h: Move opaque structures to implement.h; move sched_*
prototypes out and into sched.h.
* implement.h: Add opaque structures from pthread.h.
* sched.c (sched_yield): New function.
* condvar.c (_pthread_sem_*): Rename to sem_*; except for
_pthread_sem_timedwait which is an private function.
Sat Apr 3 23:28:00 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* Makefile.in (OBJS): Add errno.o.
Fri Apr 2 11:08:50 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* implement.h (_pthread_sem_*): Remove prototypes now defined in
semaphore.h.
* pthread.h (sempahore.h): Include.
* semaphore.h: New file for POSIX 1b semaphores.
* pthread.h (_pthread_sem_t): Change to sem_t.
* semaphore.c (_pthread_sem_*): Change to sem_*; these functions
will be exported from the library; set errno on error.
- John Bossom <jebossom@cognos.com>
(_pthread_sem_timedwait): Moved to private.c.
* private.c (_pthread_sem_timedwait): Moved from semaphore.c;
set errno on error.
* errno.c (_errno): New file. New function.
- John Bossom
* pthread.h (pthread_t_): Add per-thread errno element.
tests/ChangeLog
Sun Apr 4 12:04:28 1999 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* tsd1.c (mythread): Change Sleep(0) to sched_yield().
(sched.h): Include.
* condvar3.c (mythread): Remove redundant Sleep().
* runtest.bat: Re-organised to make more informative.
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* all: Add GNU LGPL and Copyright and Warranty.
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This will be tagged as snapshot-1999-01-04-1305
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* {most}.c: Include <errno.h> to get POSIX error values.
* signal.c (pthread_sigmask): Only provide if HAVE_SIGSET_T is
defined.
* config.h: #undef features, don't #define them. This will be
generated by autoconf very soon.
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* windows.h (THREAD_PRIORITY_ERROR_RETURN): Add.
(THREAD_PRIORITY_LOWEST): Add.
(THREAD_PRIORITY_HIGHEST): Add.
* sched.c (is_attr): Add function.
(implement.h): Add include.
(pthread_setschedparam): Rename all instances of "sched_policy"
to "sched_priority".
(pthread_getschedparam): Ditto.
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* implement.h: Add _PTHREAD_VALID macro.
* sync.c (pthread_join): Modify to use the new thread
type and _pthread_delete_thread(). Rename "target" to "thread".
Remove extra local variable "target".
(pthread_detach): Ditto.
* signal.c (pthread_sigmask): Move init of "us" out of inner block.
Fix instance of "this" should have been "us". Rename "us" to "thread".
* sched.c (pthread_setschedparam): Modify to use the new thread
type.
(pthread_getschedparam): Ditto.
* private.c (_pthread_find_thread): Fix return type and arg.
* implement.h: Remove _PTHREAD_YES and _PTHREAD_NO.
(_pthread_new_thread): Add prototype.
(_pthread_find_thread): Ditto.
(_pthread_delete_thread): Ditto.
(_pthread_new_thread_entry): Remove prototype.
(_pthread_find_thread_entry): Ditto.
(_pthread_delete_thread_entry): Ditto.
( _PTHREAD_NEW, _PTHREAD_INUSE, _PTHREAD_EXITED, _PTHREAD_REUSE):
Add.
* create.c (pthread_create): Minor rename "us" to "new" (I need
these cues but it doesn't stop me coming out with some major bugs
at times).
Load start_routine and arg into the thread so the wrapper can
call it.
* exit.c (pthread_exit): Fix pthread_this should be pthread_self.
* cancel.c (pthread_setcancelstate): Change
_pthread_threads_thread_t * to pthread_t and init with
pthread_this().
(pthread_setcanceltype): Ditto.
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* sched.c (pthread_setschedparam): Implement.
(pthread_getschedparam): Implement.
(sched_get_priority_max): Validate policy argument.
(sched_get_priority_min): Likewise.
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* sched.c: New file.
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