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* misc.c (pthreadCancelableWait): New function by John Bossom. Non-stand
ard
but provides a hook that can be used to implement cancellation points in
applications that use this library.
* pthread.h (pthread_cleanup_pop): C++ (non-WIN32) version uses
try/catch to emulate John Bossom's WIN32 __try/__finally behaviour.
In the WIN32 version __finally block, add a test for AbnormalTermination
otherwise
cleanup is only run if the cleanup_pop execute arg is non-zero. Cancella
tion
should cause the cleanup to run irrespective of the execute arg.
* condvar.c (pthread_condattr_init): Replaced by John Bossom's version.
(pthread_condattr_destroy): Replaced by John Bossom's version.
(pthread_condattr_getpshared): Replaced by John Bossom's version.
(pthread_condattr_setpshared): Replaced by John Bossom's version.
(pthread_cond_init): Replaced by John Bossom's version.
Fix comment (refered to mutex rather than condition variable).
(pthread_cond_destroy): Replaced by John Bossom's version.
(pthread_cond_wait): Replaced by John Bossom's version.
(pthread_cond_timedwait): Replaced by John Bossom's version.
(pthread_cond_signal): Replaced by John Bossom's version.
(pthread_cond_broadcast): Replaced by John Bossom's version.
Thu Dec 17 19:10:46 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* tsd.c (pthread_key_create): Replaced by John Bossom's version.
(pthread_key_delete): Replaced by John Bossom's version.
(pthread_setspecific): Replaced by John Bossom's version.
(pthread_getspecific): Replaced by John Bossom's version.
Mon Dec 7 09:44:40 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* cancel.c (pthread_setcancelstate): Replaced by John Bossom's version.
(pthread_setcanceltype): Replaced by John Bossom's version.
(pthread_testcancel): Replaced by John Bossom's version.
(pthread_cancel): Replaced by John Bossom's version.
* exit.c (pthread_exit): Replaced by John Bossom's version.
* misc.c (pthread_self): Replaced by John Bossom's version.
(pthread_equal): Replaced by John Bossom's version.
* sync.c (pthread_detach): Replaced by John Bossom's version.
(pthread_join): Replaced by John Bossom's version.
* create.c (pthread_create): Replaced by John Bossom's version.
* private.c (_pthread_processInitialize): New by John Bossom.
(_pthread_processTerminate): Non-public function by John Bossom.
(_pthread_threadStart): Non-public function by John Bossom.
(_pthread_threadDestroy): Non-public function by John Bossom.
(_pthread_cleanupStack): Non-public function by John Bossom.
(_pthread_tkAssocCreate): Non-public function by John Bossom.
(_pthread_tkAssocDestroy): Non-public function by John Bossom.
(_pthread_callUserDestroyRoutines): Non-public function by John Bossom.
* implement.h: Added John Bossom's non-API structures and
declarations.
* dll.c (PthreadsEntryPoint): Cast return value of GetProcAddress
to resolve compile warning from MSVC.
* dll.c (DLLmain): Replaced by John Bossom's version.
* dll.c (PthreadsEntryPoint):
Re-applied Anders Norlander's patch:-
Initialize _pthread_try_enter_critical_section at startup
and release kernel32 handle when DLL is being unloaded.
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* global.c (_pthread_tsd_key_table): Fix declaration.
* implement.h(_pthread_TSD_keys_TlsIndex): Add missing extern.
(_pthread_tsd_mutex): Ditto.
* create.c (_pthread_start_call): Fix "keys" array declaration.
Add comment.
* tsd.c (pthread_setspecific): Fix type declaration and cast.
(pthread_getspecific): Ditto.
* cleanup.c (_pthread_destructor_run_all): Declare missing loop
counter.
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* misc.c (pthread_once): Use the POSIX mutex primitives, not Win32.
Remove irrelevant FIXME comment.
* pthread.h (PTHREAD_ONCE_INIT): Define.
* tests/once1.c: New file; test for pthread_once(). Passes.
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* global.c (PTHREAD_MUTEX_INITIALIZER): Move to pthread.h.
* pthread.h (PTHREAD_MUTEX_INITIALIZER): Define.
(pthread_mutex_t): Reimplement as a struct containing a valid
flag. If the flag is ever down upon entry to a mutex operation,
we call pthread_mutex_create() to initialise the object. This
fixes the problem of how to handle statically initialised objects
that can't call InitializeCriticalSection() due to their context.
* mutex.c (pthread_mutex_init): Set valid flag.
(pthread_mutex_destroy): Clear valid flag.
(pthread_mutex_lock): Check and handle the valid flag.
(pthread_mutex_unlock): Likewise.
(pthread_mutex_trylock): Likewise.
* tests/mutex3.c: New file; test for the static initialisation
macro. Passes.
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* attr.c (pthread_attr_init): Only zero out the `sigmask' member
if we have the sigset_t type.
* pthread.h (pthread_sigmask): Only provide if we have the
sigset_t type.
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* pthread.h: No need to include <unistd.h>. It doesn't even exist
on Win32! Again, an artifact of cross-compilation.
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* process.h: Remove. This was a stand-in before we started doing
native compilation under Win32.
* pthread.h (pthread_mutex_init): Make `attr' argument const.
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* Makefile (LIB): Define.
(clean): Define target.
(all): Build a library not just the object files.
* pthread.h: Provide a definition for struct timespec if we don't
already have one.
* windows.c (TlsGetValue): Bug fix.
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* implement.h(_pthread_virgins): Add extern.
(_pthread_virgin_next): Ditto.
(_pthread_reuse): Ditto.
(_pthread_reuse_top): Ditto.
(_pthread_win32handle_map): Ditto.
(_pthread_threads_mutex_table): Ditto.
* global.c (_pthread_virgins): Changed from array to pointer.
Storage allocation for the array moved into dll.c.
(_pthread_reuse): Ditto.
(_pthread_win32handle_map): Ditto.
(_pthread_threads_mutex_table): Ditto.
* dll.c (PthreadsEntryPoint): Set up thread admin storage when
DLL is loaded.
* fork.c (pthread_atfork): Fix function pointer arg to all
_pthread_handler_push() calls. Change "arg" arg to NULL in child push.
* exit.c: Add windows.h and process.h includes.
(_pthread_exit): Add local detachstate declaration.
(_pthread_exit): Fix incorrect name for pthread_attr_getdetachstate().
* pthread.h (_POSIX_THREAD_ATTR_STACKSIZE): Move from global.c
(_POSIX_THREAD_ATTR_STACKADDR): Ditto.
* create.c (pthread_create): Fix #if should be #ifdef.
(_pthread_start_call): Remove usused variables.
* process.h: Create.
* windows.h: Move _beginthreadex and _endthreadex into
process.h
Mon Aug 3 21:19:57 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* condvar.c (pthread_cond_init): Add NULL attr to
pthread_mutex_init() call - default attributes will be used.
(cond_wait): Fix typo.
(cond_wait): Fix typo - cv was ev.
(pthread_cond_broadcast): Fix two identical typos.
* cleanup.c (_pthread_destructor_pop_all): Remove _ prefix from
PTHREAD_DESTRUCTOR_ITERATIONS.
* pthread.h: Move _POSIX_* values into posix.h
* pthread.h: Fix typo in pthread_mutex_init() prototype.
* attr.c (pthread_attr_init): Fix error in priority member init.
* windows.h (THREAD_PRIORITY_NORMAL): Add.
* pthread.h (sched_param): Add missing ';' to struct definition.
* attr.c (pthread_attr_init): Remove obsolete pthread_attr_t
member initialisation - cancelstate, canceltype, cancel_pending.
(is_attr): Make arg "attr" a const.
* implement.h (_PTHREAD_HANDLER_POP_LIFO): Remove definition.
(_PTHREAD_HANDLER_POP_FIFO): Ditto.
(_PTHREAD_VALID): Add missing newline escape (\).
(_pthread_handler_node): Make element "next" a pointer.
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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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