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* config.h: Create. This is a temporary stand-in for autoconf yet
to be done.
(HAVE_SIGNAL_H): Add.
* pthread.h: Minor rearrangement for temporary config.h.
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* Makefile (SRCS): Create. Preliminary.
* windows.h: Create. Contains Win32 definitions for compile
testing. This is just a standin for the real one.
* pthread.h (SIG_UNBLOCK): Fix typo. Was SIG_BLOCK.
(windows.h): Add include. Required for CRITICAL_SECTION.
(pthread_cond_t): Move enum declaration outside of struct
definition.
(unistd.h): Add include - may be temporary.
* condvar.c (windows.h): Add include.
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* create.c (pthread_create): Start of rewrite. Not completed yet.
* private.c (_pthread_new_thread_entry): Start of rewrite. Not
complete.
* implement.h (_pthread_threads_thread): Rename, remove thread
member, add win32handle and ptstatus members.
(_pthread_t): Add.
* pthread.h: pthread_t is no longer mapped directly to a Win32
HANDLE type. This is so we can let the Win32 thread terminate and
reuse the HANDLE while pthreads holds it's own thread ID until
the last waiting join exits.
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* mutex.c (pthread_mutexattr_setpshared): Not supported; remove.
(pthread_mutexattr_getpshared): Likewise.
* pthread.h (pthread_mutexattr_setpshared): Remove prototype.
(pthread_mutexattr_getpshared): Likewise.
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* pthread.h: Converting PTHREAD_* defines to alias the (const int)
values in global.c.
* global.c: Started converting PTHREAD_* defines to (const int) as
a part of making the eventual pthreads DLL binary compatible
through version changes.
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* private.c (_pthread_delete_thread_entry): Mutex locks removed.
Mutexes must be applied at the caller level.
(_pthread_new_thread_entry): Ditto.
(_pthread_new_thread_entry): Init cancelstate, canceltype, and
cancel_pending to default values.
(_pthread_new_thread_entry): Rename "this" to "new".
(_pthread_find_thread_entry): Rename "this" to "entry".
(_pthread_delete_thread_entry): Rename "thread_entry" to "entry".
* create.c (_pthread_start_call): Mutexes changed to
_pthread_count_mutex. All access to the threads table entries is
under the one mutex. Otherwise chaos reigns.
Sat Jul 25 23:16:51 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* implement.h (_pthread_threads_thread): Move cancelstate and
canceltype members out of pthread_attr_t into here.
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* create.c (_pthread_start_call): Set thread priority. Ensure our
thread entry is removed from the thread table but only if
pthread_detach() was called and there are no waiting joins.
(pthread_create): Set detach flag in thread entry if the
thread is created PTHREAD_CREATE_DETACHED.
* pthread.h (pthread_attr_t): Rename member "detachedstate".
* attr.c (pthread_attr_init): Rename attr members.
* exit.c (pthread_exit): Fix indirection mistake.
* implement.h (_PTHREAD_THREADS_TABLE_INDEX): Add.
* exit.c (_pthread_vacuum): Fix incorrect args to
_pthread_handler_pop_all() calls.
Make thread entry removal conditional.
* sync.c (pthread_join): Add multiple join and async detach handling.
* implement.h (_PTHREAD_THREADS_TABLE_INDEX): Add.
* global.c (_pthread_threads_mutex_table): Add.
* implement.h (_pthread_once_flag): Remove.
(_pthread_once_lock): Ditto.
(_pthread_threads_mutex_table): Add.
* global.c (_pthread_once_flag): Remove.
(_pthread_once_lock): Ditto.
* sync.c (pthread_join): Fix tests involving new return value
from _pthread_find_thread_entry().
(pthread_detach): Ditto.
* private.c (_pthread_find_thread_entry): Failure return code
changed from -1 to NULL.
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* pthread.h: (pthread_cancel): Add function prototype.
(pthread_testcancel): Ditto.
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* pthread.h (pthread_condattr_t): Rename dummy structure member.
(pthread_mutexattr_t): Likewise.
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* cancel.c (pthread_cancel): Implement.
(pthread_testcancel): Implement.
* exit.c (pthread_exit): Add comment explaining the longjmp().
* implement.h (_pthread_threads_thread_t): New member cancelthread.
(_PTHREAD_YES): Define.
(_PTHREAD_NO): Define.
(RND_SIZEOF): Remove.
* create.c (pthread_create): Rename cancelability to cancelstate.
* pthread.h (pthread_attr_t): Rename cancelability to cancelstate.
(PTHREAD_CANCELED): Define.
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* pthread.h (SIG_BLOCK): Define if not already defined.
(SIG_UNBLOCK): Likewise.
(SIG_SETMASK): Likewise.
(pthread_attr_t): Add signal mask member.
(pthread_sigmask): Add function prototype.
* signal.c (pthread_sigmask): Implement.
* create.c: #include <string.h> to get a prototype for memcpy().
(pthread_create): New threads inherit their creator's signal
mask. Copy the signal mask to the new thread structure.
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* fork.c (pthread_atfork): Add all the necessary push calls.
Local implementation semantics:
If we get an ENOMEM at any time then ALL handlers
(including those from previous pthread_atfork() calls) will be
popped off each of the three atfork stacks before we return.
(fork): Add all the necessary pop calls. Add the thread cancellation
and join calls to the child fork.
Add #includes.
* implement.h: (_pthread_handler_push): Fix return type and stack arg
type in prototype.
(_pthread_handler_pop): Fix stack arg type in prototype.
(_pthread_handler_pop_all): Fix stack arg type in prototype.
* cleanup.c (_pthread_handler_push): Change return type to int and
return ENOMEM if malloc() fails.
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* attr.c (pthread_attr_destroy): Fix merge conflicts.
(pthread_attr_getdetachstate): Fix merge conflicts.
(pthread_attr_setdetachstate): Fix merge conflicts.
* pthread.h: Fix merge conflicts.
* sync.c (pthread_join): Fix merge conflicts.
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* pthread.h (PTHREAD_CREATE_JOINABLE): Define.
(PTHREAD_CREATE_DETACHED): Likewise.
(pthread_attr_t): Add new structure member `detached'.
(pthread_attr_getdetachstate): Add function prototype.
(pthread_attr_setdetachstate): Likewise.
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* pthread.h (sched_param): Define this type.
(pthread_attr_getschedparam): Add function prototype.
(pthread_attr_setschedparam): Likewise.
(pthread_setcancelstate): Likewise.
(pthread_setcanceltype): Likewise.
(sched_get_priority_min): Likewise.
(sched_get_priority_max): Likewise.
(pthread_mutexattr_setprotocol): Remove; not supported.
(pthread_mutexattr_getprotocol): Likewise.
(pthread_mutexattr_setprioceiling): Likewise.
(pthread_mutexattr_getprioceiling): Likewise.
(pthread_attr_t): Add canceltype member. Update comments.
(SCHED_OTHER): Define this scheduling policy constant.
(SCHED_FIFO): Likewise.
(SCHED_RR): Likewise.
(SCHED_MIN): Define the lowest possible value for this constant.
(SCHED_MAX): Likewise, the maximum possible value.
(PTHREAD_CANCEL_ASYNCHRONOUS): Redefine.
(PTHREAD_CANCEL_DEFERRED): Likewise.
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pthread.h.
* pthread.h: Move implementation hidden definitions into
implement.h.
* implement.h: Move implementation hidden definitions from
pthread.h. Add constants to index into the different handler stacks.
* cleanup.c (_pthread_handler_push): Simplify args. Restructure.
(_pthread_handler_pop): Simplify args. Restructure.
(_pthread_handler_pop_all): Simplify args. Restructure.
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* attr.c, implement.h, pthread.h, ChangeLog: Resolve CVS merge
conflicts.
* private.c (_pthread_find_thread_entry): Changes to return type
to support leaner _pthread_threads_table[] which now only stores
_pthread_thread_thread_t *.
(_pthread_new_thread_entry): Internal changes.
(_pthread_delete_thread_entry): Internal changes to avoid contention.
Calling routines changed accordingly.
* pthread.h: Modified cleanup macros to use new generic push and pop.
Added destructor and atfork stacks to _pthread_threads_thread_t.
* cleanup.c (_pthread_handler_push, _pthread_handler_pop,
_pthread_handler_pop_all): Renamed cleanup push and pop routines
and made generic to handle destructors and atfork handlers as
well.
* create.c (_pthread_start_call): New function is a wrapper for
all new threads. It allows us to do some cleanup when the thread
returns, ie. that is otherwise only done if the thread is cancelled.
* exit.c (_pthread_vacuum): New function contains code from
pthread_exit() that we need in the new _pthread_start_call()
as well.
* implement.h: Various additions and minor changes.
* pthread.h: Various additions and minor changes.
Change cleanup handler macros to use generic handler push and pop
functions.
* attr.c: Minor mods to all functions.
(is_attr): Implemented missing function.
* create.c (pthread_create): More clean up.
* private.c (_pthread_find_thread_entry): Implement.
(_pthread_delete_thread_entry): Implement.
(_pthread_new_thread_entry): Implement.
These functions manipulate the implementations internal thread
table and are part of general code cleanup and modularisation.
They replace _pthread_getthreadindex() which was removed.
* exit.c (pthread_exit): Changed to use the new code above.
* pthread.h: Add cancelability constants. Update comments.
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* attr.c (pthread_setstacksize): Update test of attr argument.
(pthread_getstacksize): Likewise.
(pthread_setstackaddr): Likewise.
(pthread_getstackaddr): Likewise.
(pthread_attr_init): No need to allocate any storage.
(pthread_attr_destroy): No need to free any storage.
* mutex.c (is_attr): Not likely to be needed; remove.
(remove_attr): Likewise.
(insert_attr): Likewise.
* pthread.h (pthread_attr_t): Moved here from implement.h.
* implement.h (_pthread_mutexattr_t): Moved to a public definition
in pthread.h. There was little gain in hiding these details.
(_pthread_condattr_t): Likewise.
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* pthread.h (pthread_atfork): Add function prototype.
* fork.c (pthread_atfork): Preliminary implementation.
(_pthread_fork): Likewise.
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* cleanup.c (_pthread_cleanup_push): Implement.
(_pthread_cleanup_pop): Implement.
(_pthread_do_cancellation): Implement.
These are private to the implementation. The real cleanup functions
are macros. See below.
* pthread.h (pthread_cleanup_push): Implement as a macro.
(pthread_cleanup_pop): Implement as a macro.
Because these are macros which start and end a block, the POSIX scoping
requirement is observed. See the comment in the file.
* exit.c (pthread_exit): Refine the code.
* create.c (pthread_create): Code cleanup.
* implement.h (RND_SIZEOF): Add RND_SIZEOF(T) to round sizeof(T)
up to multiple of DWORD.
Add function prototypes.
* private.c (_pthread_getthreadindex): "*thread" should have been
"thread". Detect empty slot fail condition.
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* pthread.h (_pthread_once_flag): Remove.
(_pthread_once_lock): Remove.
(pthread_once): Add function prototype.
(pthread_once_t): Define this type.
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* pthread.h (_pthread_once_flag): Add new variable.
(_pthread_once_lock): Add new mutex lock to ensure integrity of
access to _pthread_once_flag.
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* private.c (_pthread_getthreadindex): Implement.
* pthread.h: Add application static data dependent on
_PTHREADS_BUILD_DLL define. This is needed to avoid allocating
non-sharable static data within the pthread DLL.
* implement.h: Add _pthread_cleanup_stack_t, _pthread_cleanup_node_t
and _PTHREAD_HASH_INDEX.
* exit.c (pthread_exit): Begin work on cleanup and de-allocate
thread-private storage.
* create.c (pthread_create): Add thread to thread table.
Keep a thread-private copy of the attributes with default values
filled in when necessary. Same for the cleanup stack. Make
pthread_create C run-time library friendly by using _beginthreadex()
instead of CreateThread(). Fix error returns.
Sun Jul 19 16:26:23 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* implement.h: Rename pthreads_thread_count to _pthread_threads_count.
Create _pthread_threads_thread_t struct to keep thread specific data.
* create.c: Rename pthreads_thread_count to _pthread_threads_count.
(pthread_create): Handle errors from CreateThread().
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* pthread.h (pthread_key_t): Define this type.
(pthread_key_create): Add function prototype.
(pthread_setspecific): Likewise.
(pthread_getspecific): Likwise.
(pthread_key_delete): Likewise.
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* pthread.h (pthread_cond_t): Fix for u_int. Do not assume that
the mutex contained withing the pthread_cond_t structure will be a
critical section. Use our new POSIX type!
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* pthread.h (pthread_cond_init): Add function protoype.
(pthread_cond_broadcast): Likewise.
(pthread_cond_signal): Likewise.
(pthread_cond_timedwait): Likewise.
(pthread_cond_wait): Likewise.
(pthread_cond_destroy): Likewise.
(pthread_cond_t): Define this type.
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* pthread.h (PTHREADS_PROCESS_PRIVATE): Remove.
(PTHREAD_PROCESS_SHARED): Likewise. No support for mutexes shared
across processes for now.
(pthread_mutex_t): Use a Win32 CRITICAL_SECTION type for better
performance.
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* pthread.h (pthread_attr_init): Add function prototype.
(pthread_attr_destroy): Likewise.
(pthread_attr_setstacksize): Likewise.
(pthread_attr_getstacksize): Likewise.
(pthread_attr_setstackaddr): Likewise.
(pthread_attr_getstackaddr): Likewise.
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* pthread.h (pthread_condattr_setpshared): Fix typo.
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* pthread.h (pthread_condattr_t): Define this type.
(pthread_condattr_init): Likewise.
(pthread_condattr_destroy): Likewise.
(pthread_condattr_setpshared): Likewise.
(pthread_condattr_getpshared): Likewise.
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* pthread.h (pthread_mutex_t): Define this type.
(pthread_mutex_destroy): Add function prototype.
(pthread_lock): Likewise.
(pthread_trylock): Likewise.
(pthread_unlock): Likewise.
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* pthread.h (pthread_mutexattr_init): Add function prototype.
(pthread_mutexattr_destroy): Likewise.
(pthread_mutexattr_setpshared): Likewise.
(pthread_mutexattr_getpshared): Likewise.
(PTHREAD_PROCESS_PRIVATE): Define.
(PTHREAD_PROCESS_SHARED): Define.
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* pthread.h (pthread_mutexattr_t): Define this type.
(pthread_mutexattr_setprotocol): Add function prototype.
(pthread_mutexattr_getprotocol): Likewise.
(pthread_mutexattr_setprioceiling): Likewise.
(pthread_mutexattr_getprioceiling): Likewise.
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* pthread.h (pthread_join): Add function prototype.
(pthread_equal): Likewise.
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* pthread.h (pthread_self): Add function prototype.
(pthread_t): Define this type.
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* pthread.h (pthread_exit): Add function prototype.
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* pthread.h (pthread_create): Add function prototype.
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