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* pthread.h: Conditionally added some #defines from config.h
needed when not building the library. e.g. NEED_ERRNO, NEED_SEM.
(PTW32_DLLPORT): Now only defined if _DLL defined.
(_errno): Compiler directive was incorrectly including prototype.
* sched.h: Conditionally added some #defines from config.h
needed when not building the library.
* semaphore.h: Replace an instance of NEED_SEM that should
have been NEED_ERRNO. This change currently has nil effect.
* GNUmakefile: Correct some recent changes.
* Makefile: Add rule to generate pre-processor output.
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exit() rather than pthread_exit(). Add comments to explain
why.
* rwlock2_t.c: New test.
* rwlock3_t.c: New test.
* rwlock4_t.c: New test.
* rwlock5_t.c: New test.
* rwlock6_t.c: New test.
* rwlock6_t2.c: New test.
* rwlock6.c (main): Swap thread and result variables
to correspond to actual thread functions.
* rwlock1.c: Change test description comment to correspond
to the actual test.
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critical section to solve deadlock problem.
* pthread.c: Add all remaining C modules.
* pthread.h: Use dllexport/dllimport attributes on functions
to avoid using pthread.def.
* sched.h: Likewise.
* semaphore.h: Likewise.
* GNUmakefile: Add new targets for single translation
unit build to maximise inlining potential; generate
pthread.def automatically.
* Makefile: Likewise, but no longer uses pthread.def.
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conditional compilation; refinements; bug fixes. See the ChangeLog.
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to disable cancelation at the start of a thread's cancelation
run to prevent double cancelation. The main problem
arises if a thread is canceling and then receives a subsequent
async cancel request.
* private.c: Likewise.
* condvar.c: Place pragmas around cleanup_push/pop to turn
off inline optimisation (/Obn where n>0 - MSVC only). Various
optimisation switches in MSVC turn this on, which interferes with
the way that cleanup handlers are run in C++ EH and SEH
code. Application code compiled with inline optimisation must
also wrap cleanup_push/pop blocks with the pragmas, e.g.
#pragma inline_depth(0)
pthread_cleanup_push(...)
...
pthread_cleanup_pop(...)
#pragma inline_depth(8)
* rwlock.c: Likewise.
* mutex.c: Remove attempts to inline some functions.
* signal.c: Modify misleading comment.
tests/
* mutex8: New test.
* mutex8n: New test.
* mutex8e: New test.
* mutex8r: New test.
* cancel6a: New test.
* cancel6d: New test.
* cleanup0.c: Add pragmas for inline optimisation control.
* cleanup1.c: Add pragmas for inline optimisation control.
* cleanup2.c: Add pragmas for inline optimisation control.
* cleanup3.c: Add pragmas for inline optimisation control.
* condvar7.c: Add pragmas for inline optimisation control.
* condvar8.c: Add pragmas for inline optimisation control.
* condvar9.c: Add pragmas for inline optimisation control.
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* mutex.c (pthread_mutex_timedlock): New function suggested by
Alexander Terekhov. The logic required to implement this
properly came from Alexander, with some collaboration
with Thomas Pfaff.
(pthread_mutex_unlock): Wrap the waiters check and sema
post in a critical section to prevent a race with
pthread_mutex_timedlock.
(ptw32_timed_semwait): New function;
returns a special result if the absolute timeout parameter
represents a time already passed when called; used by
pthread_mutex_timedwait(). Have deliberately not reused
the name "ptw32_sem_timedwait" because they are not the same
routine.
* condvar.c (ptw32_cond_timedwait): Use the new sem_timedwait()
instead of ptw32_sem_timedwait(), which now has a different
function. See previous.
* implement.h: Remove prototype for ptw32_sem_timedwait.
See next.
(pthread_mutex_t_): Add critical section element for access
to lock_idx during mutex post-timeout processing.
* semaphore.h (sem_timedwait): See next.
* semaphore.c (sem_timedwait): See next.
* private.c (ptw32_sem_timedwait): Move to semaphore.c
and rename as sem_timedwait().
2002-01-18 Ross Johnson <rpj@special.ise.canberra.edu.au>
* sync.c (pthread_join): Was getting the exit code from the
calling thread rather than the joined thread if
defined(__MINGW32__) && !defined(__MSVCRT__).
2002-01-15 Ross Johnson <rpj@special.ise.canberra.edu.au>
* pthread.h: Unless the build explicitly defines __CLEANUP_SEH,
__CLEANUP_CXX, or __CLEANUP_C, then the build defaults to
__CLEANUP_C style cleanup. This style uses setjmp/longjmp
in the cancelation and thread exit implementations and therefore
won't do stack unwinding if linked to applications that have it
(e.g. C++ apps). This is currently consistent with most/all
commercial Unix POSIX threads implementations.
* spin.c (pthread_spin_init): Edit renamed function call.
* nonportable.c (pthread_num_processors_np): New.
(pthread_getprocessors_np): Renamed to ptw32_getprocessors
and moved to private.c.
* private.c (pthread_getprocessors): Moved here from
nonportable.c.
* pthread.def (pthread_getprocessors_np): Removed
from export list.
* rwlock.c (pthread_rwlockattr_init): New.
(pthread_rwlockattr_destroy): New.
(pthread_rwlockattr_getpshared): New.
(pthread_rwlockattr_setpshared): New.
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Remove unused autoconf files;
Add the file COPYING, which describes the pthread-win32 license
relative to the FSF LGPL.
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semaphores are used instead of the PulseEvent. Also improved
overall throughput by returning PTHREAD_BARRIER_SERIAL_THREAD
to the first waking thread.
* implement.h (pthread_barrier_t_): Revamped.
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* spin.c: Revamped and working; included static initialiser.
* barrier.c: Likewise.
* condvar.c: Macro constant change; inline auto init routine.
* mutex.c: Likewise.
* rwlock.c: Likewise.
* private.c: Add support for spinlock initialiser.
* global.c: Likewise.
* implement.h: Likewise.
* pthread.h (PTHREAD_SPINLOCK_INITIALIZER): Fix typo.
tests/ChangeLog:
* spin3.c: Changed test and fixed.
* spin4.c: Fixed.
* barrier3.c: Fixed.
* barrier4.c: Fixed.
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for this object.
* pthread.h (PTHREAD_BARRIER_INITIALIZER): Removed.
* rwlock.c (pthread_rwlock_wrlock): This routine is
not a cancelation point - disable deferred
cancelation around call to pthread_cond_wait().
tests/ChangeLog:
* spin1.c: New; testing spinlocks.
* spin2.c: New; testing spinlocks.
* spin3.c: New; testing spinlocks.
* spin4.c: New; testing spinlocks.
* barrier1.c: New; testing barriers.
* barrier2.c: New; testing barriers.
* barrier3.c: New; testing barriers.
* barrier4.c: New; testing barriers.
* GNUmakefile: Add new tests.
* Makefile: Add new tests.
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* spin.c: New module implementing spin locks.
* barrier.c: New module implementing barriers.
* pthread.h (_POSIX_SPIN_LOCKS): defined.
(_POSIX_BARRIERS): Defined.
(pthread_spin_*): Defined.
(pthread_barrier*): Defined.
(PTHREAD_BARRIER_SERIAL_THREAD): Defined.
* implement.h (pthread_spinlock_t_): Defined.
(pthread_barrier_t_): Defined.
(pthread_barrierattr_t_): Defined.
* mutex.c (pthread_mutex_lock): Return with the error
if an auto-initialiser initialisation fails.
* nonportable.c (pthread_getprocessors_np): New; gets the
number of available processors for the current process.
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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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* dll.c (dllMain): Moved UWIN process attach code
to pthread_win32_process_attach_np(); moved
instance of pthread_count to global.c.
* global.c (pthread_count): Moved from dll.c.
* nonportable.c (pthread_win32_process_attach_np):
Moved _UWIN code to here from dll.c.
* implement.h (pthread_count): Define extern int.
* create.c (pthread_count): Remove extern int.
* private.c (pthread_count): Likewise.
* exit.c (pthread_count): Likewise.
Contributed by - David Korn <dgk@research.att.com>
* dll.c: Added changes necessary to work with UWIN.
* create.c: Likewise.
* pthread.h: Likewise.
* misc.c: Likewise.
* exit.c: Likewise.
* private.c: Likewise.
* implement.h: Likewise.
There is some room at the start of struct pthread_t_
to implement the signal semantics in UWIN's posix.dll
although this is not yet complete.
* Nmakefile: Compatible with UWIN's Nmake utility.
* Nmakefile.tests: Likewise - for running the tests.
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Remove - should not have been included in the first place.
(pthread_mutex_getdefaultkind_np): Likewise.
* global.c (ptw32_mutex_default_kind): Likewise.
* mutex.c (pthread_mutex_init): Remove use of
ptw32_mutex_default_kind.
* pthread.h (pthread_mutex_setdefaultkind_np): Likewise.
(pthread_mutex_getdefaultkind_np): Likewise.
* pthread.def (pthread_mutexattr_setkind_np): Added.
(pthread_mutexattr_getkind_np): Likewise.
* README: Many changes that should have gone in before
the last snapshot.
* README.NONPORTABLE: New - referred to by ANNOUNCE
but never created; documents the non-portable routines
included in the library - moved from README with new
routines added.
* ANNOUNCE (pthread_mutexattr_setkind_np): Added to
compliance list.
(pthread_mutexattr_getkind_np): Likewise.
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* pthread.h (rand_r): Fake using _seed argument to quell
compiler warning (compiler should optimise this away later).
* GNUmakefile (OPT): Leave symbolic information out of the library
and increase optimisation level - for smaller faster prebuilt
dlls.
2001-05-29 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
Contributed by - Milan Gardian <Milan.Gardian@LEIBINGER.com>
* Makefile: fix typo.
* pthreads.h: Fix problems with stdcall/cdecl conventions, in particular
remove the need for PT_STDCALL everywhere; remove warning supression.
* (errno): Fix the longstanding "inconsistent dll linkage" problem
with errno; now also works with /MD debugging libs -
warnings emerged when compiling pthreads library with /MD (or /MDd)
compiler switch, instead of /MT (or /MTd) (i.e. when compiling pthreads
using Multithreaded DLL CRT instead of Multithreaded statically linked
CRT).
* create.c (pthread_create): Likewise; fix typo.
* private.c (ptw32_threadStart): Eliminate use of terminate() which doesn't
throw exceptions.
* Remove unnecessary #includes from a number of modules -
[I had to #include malloc.h in implement.h for gcc - rpj].
2001-05-29 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
Contributed by - Thomas Pfaff <tpfaff@gmx.net>
* pthread.h (PTHREAD_MUTEX_DEFAULT): New; equivalent to
PTHREAD_MUTEX_DEFAULT_NP.
* (PTHREAD_MUTEX_NORMAL): Similarly.
* (PTHREAD_MUTEX_ERRORCHECK): Similarly.
* (PTHREAD_MUTEX_RECURSIVE): Similarly.
* (pthread_mutex_setdefaultkind_np): New; Linux compatibility stub
for pthread_mutexattr_settype.
* (pthread_mutexattr_getkind_np): New; Linux compatibility stub
for pthread_mutexattr_gettype.
* mutex.c (pthread_mutexattr_settype): New; allow
the following types of mutex:
PTHREAD_MUTEX_DEFAULT_NP
PTHREAD_MUTEX_NORMAL_NP
PTHREAD_MUTEX_ERRORCHECK_NP
PTHREAD_MUTEX_RECURSIVE_NP
* Note that PTHREAD_MUTEX_DEFAULT is equivalent to
PTHREAD_MUTEX_NORMAL - ie. mutexes should no longer
be recursive by default, and a thread will deadlock if it
tries to relock a mutex it already owns. This is inline with
other pthreads implementations.
* (pthread_mutex_lock): Process the lock request
according to the mutex type.
* (pthread_mutex_init): Eliminate use of Win32 mutexes as the
basis of POSIX mutexes - instead, a combination of one critical section
and one semaphore are used in conjunction with Win32 Interlocked* routines.
* (pthread_mutex_destroy): Likewise.
* (pthread_mutex_lock): Likewise.
* (pthread_mutex_trylock): Likewise.
* (pthread_mutex_unlock): Likewise.
* Use longjmp/setjmp to implement cancelation when building the library
using a C compiler which doesn't support exceptions, e.g. gcc -x c (note
that gcc -x c++ uses exceptions).
* Also fixed some of the same typos and eliminated PT_STDCALL as
Milan Gardian's patches above.
2001-02-07 Ross Johnson <rpj@special.ise.canberra.edu.au>
Contributed by - Alexander Terekhov <TEREKHOV@de.ibm.com>
* rwlock.c: Revamped.
* implement.h (pthread_rwlock_t_): Redefined.
This implementation does not have reader/writer starvation problem.
Rwlock attempts to behave more like a normal mutex with
races and scheduling policy determining who is more important;
It also supports recursive locking,
has less synchronization overhead (no broadcasts at all,
readers are not blocked on any condition variable) and seem to
be faster than the current implementation [W98 appears to be
approximately 15 percent faster at least - on top of speed increase
from Thomas Pfaff's changes to mutex.c - rpj].
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2000-12-29 Ross Johnson <rpj@special.ise.canberra.edu.au>
* Makefile: Back-out "for" loops which don't work.
* GNUmakefile: Remove the fake.a target; add the "realclean"
target; don't remove built libs under the "clean" target.
* config.h: Add a guard against multiple inclusion.
* semaphore.h: Add some defines from config.h to make
semaphore.h independent of config.h when building apps.
* pthread.h (_errno): Back-out previous fix until we know how to
fix it properly.
* implement.h (lockCount): Add missing element to pthread_mutex_t_.
* sync.c (pthread_join): Spelling fix in comment.
* private.c (ptw32_threadStart): Reset original termination
function (C++).
(ptw32_threadStart): Cleanup detached threads early in case
the library is statically linked.
(ptw32_callUserDestroyRoutines): Remove [SEH] __try block from
destructor call so that unhandled exceptions will be passed through
to the system; call terminate() from [C++] try block for the same
reason.
* tsd.c (pthread_getspecific): Add comment.
* mutex.c (pthread_mutex_init): Initialise new elements in
pthread_mutex_t.
(pthread_mutex_unlock): Invert "pthread_equal()" test.
2000-12-28 Ross Johnson <rpj@special.ise.canberra.edu.au>
* semaphore.c (mode_t): Use ifndef HAVE_MODE_T to include definition.
* config.h.in (HAVE_MODE_T): Added.
(_UWIN): Start adding defines for the UWIN package.
./tests/ChangeLog:
2000-12-29 Ross Johnson <rpj@special.ise.canberra.edu.au>
* GNUmakefile: Add mutex4 test; ensure libpthreadw32.a is
removed for "clean" target.
* Makefile: Add mutex4 test.
* exception3.c: Remove SEH code; automatically pass the test
under SEH (which is an N/A environment).
* mutex4.c: New test.
* eyal1.c (do_work_unit): Add a dummy "if" to force the
optimiser to retain code; reduce thread work loads.
* condvar8.c (main): Add an additional "assert" for debugging;
increase pthread_cond_signal timeout.
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* misc.c (pthread_self): Restore Win32 "last error"
cleared by TlsGetValue() call in
pthread_getspecific()
- "Steven Reddie" <smr@essemer.com.au>
2000-09-20 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
* mutex.c (pthread_mutex_lock): Record the owner
of the mutex. This requires also keeping count of
recursive locks ourselves rather than leaving it
to Win32 since we need to know when to NULL the
thread owner when the mutex is unlocked.
(pthread_mutex_trylock): Likewise.
(pthread_mutex_unlock): Check that the calling
thread owns the mutex, decrement the recursive
lock count, and NULL the owner if zero. Return
EPERM if the mutex is owned by another thread.
* implement.h (pthread_mutex_t_): Add ownerThread
and lockCount members.
- reported by Arthur Kantor <akantor@bexusa.com>
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2000-12-28 Ross Johnson <rpj@special.ise.canberra.edu.au>
* private.c (ptw32_threadStart): Unhandled exceptions are
now passed through to the system to deal with. This is consistent
with normal Windows behaviour. C++ applications may use
set_terminate() to override the default behaviour which is
to call ptw32_terminate(). Ptw32_terminate() cleans up some
POSIX thread stuff before calling the system default function
which calls abort(). The users termination function should conform
to standard C++ semantics which is to not return. It should
exit the thread (call pthread_exit()) or exit the application.
* private.c (ptw32_terminate): Added as the default set_terminate()
function. It calls the system default function after cleaning up
some POSIX thread stuff.
* implement.h (ptw32_try_enter_critical_section): Move
declaration.
* global.c (ptw32_try_enter_critical_section): Moved
from dll.c.
* dll.c: Move process and thread attach/detach code into
functions in nonportable.c.
* nonportable.c (pthread_win32_process_attach_np): Process
attach code from dll.c is now available to static linked
applications.
* nonportable.c (pthread_win32_process_detach_np): Likewise.
* nonportable.c (pthread_win32_thread_attach_np): Likewise.
* nonportable.c (pthread_win32_thread_detach_np): Likewise.
* pthread.h: Add new non-portable prototypes for static
linked applications.
* GNUmakefile (OPT): Increase optimisation flag and remove
debug info flag.
* pthread.def: Add new non-portable exports for static
linked applications.
2000-12-11 Ross Johnson <rpj@special.ise.canberra.edu.au>
* FAQ: Update Answer 6 re getting a fully working
Mingw32 built library.
2000-09-09 Ross Johnson <rpj@special.ise.canberra.edu.au>
* pthread.h (ctime_r): Fix arg.
./tests/ChangeLog:
2000-12-28 Ross Johnson <rpj@special.ise.canberra.edu.au>
* eyal1.c: Increase thread work loads.
* exception2.c: New test.
* exception3.c: New test.
* Makefile: Add new tests exception2.c and exception3.c.
* GNUmakefile: Likewise.
2000-12-11 Ross Johnson <rpj@special.ise.canberra.edu.au>
* cleanup3.c: Remove unused variable.
* cleanup2.c: Likewise.
* exception1.c: Throw an exception rather than use
a deliberate zero divide so that catch(...) will
handle it under Mingw32. Mingw32 now builds the
library correctly to pass all tests - see Thomas
Pfaff's detailed instructions re needed changes
to Mingw32 in the Pthreads-Win32 FAQ.
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* cancel.c (pthread_cancel): Must get "self" through
calling pthread_self() which will ensure a POSIX thread
struct is built for non-POSIX threads; return an error
if this fails
- Ollie Leahy <ollie@mpt.ie>
(pthread_setcancelstate): Likewise.
(pthread_setcanceltype): Likewise.
* misc.c (ptw32_cancelable_wait): Likewise.
* private.c (ptw32_tkAssocCreate): Remove unused #if 0
wrapped code.
* pthread.h (ptw32_get_exception_services_code):
Needed to be forward declared unconditionally.
2000-09-06 Ross Johnson <rpj@special.ise.canberra.edu.au>
* cancel.c (pthread_cancel): If called from the main
thread "self" would be NULL; get "self" via pthread_self()
instead of directly from TLS so that an implicit
pthread object is created.
* misc.c (pthread_equal): Strengthen test for NULLs.
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* condvar.c (ptw32_cond_wait_cleanup): Ensure that all
waking threads check if they are the last, and notify
the broadcaster if so - even if an error occurs in the
waiter.
* semaphore.c (_decrease_semaphore): Should be
a call to ptw32_decrease_semaphore.
(_increase_semaphore): Should be a call to
ptw32_increase_semaphore.
* misc.c (ptw32_cancelable_wait): Renamed from
CancelableWait.
(cond_wait_cleanup*): Rename to ptw32_cond_wait_cleanup*.
(ptw32_cond_timedwait): Add comments.
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* private.c (ptw32_throw): Fix exception test;
move exceptionInformation declaration.
* tsd.c (pthread_key_create): newkey wrongly declared.
* pthread.h: Fix comment block.
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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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