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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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* private.c (_pthread_new_thread): Increment _pthread_threads_count.
(_pthread_delete_thread): Decrement _pthread_threads_count.
Remove some comments.
* exit.c (_pthread_exit): : Fix two pthread_mutex_lock() calls that
should have been pthread_mutex_unlock() calls.
(_pthread_vacuum): Remove call to _pthread_destructor_pop_all().
* create.c (pthread_create): Fix two pthread_mutex_lock() calls that
should have been pthread_mutex_unlock() calls.
* global.c (_pthread_tsd_mutex): Add mutex for TSD operations.
* tsd.c (pthread_key_create): Add critical section.
(pthread_setspecific): Ditto.
(pthread_getspecific): Ditto.
(pthread_key_delete): Ditto.
* sync.c (pthread_join): Fix two pthread_mutex_lock() calls that
should have been pthread_mutex_unlock() calls.
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* implement.h (_pthread_tsd_key_table): New.
* create.c (_pthread_start_call): Initialise per-thread TSD keys
to NULL.
* misc.c (pthread_once): Correct typo in comment.
* implement.h (_pthread_destructor_push): Remove.
(_pthread_destructor_pop): Remove.
(_pthread_destructor_run_all): Rename from _pthread_destructor_pop_all.
(_PTHREAD_TSD_KEY_DELETED): Add enum.
(_PTHREAD_TSD_KEY_INUSE): Add enum.
* cleanup.c (_pthread_destructor_push): Remove.
(_pthread_destructor_pop): Remove.
(_pthread_destructor_run_all): Totally revamped TSD.
* dll.c (_pthread_TSD_keys_TlsIndex): Initialise.
* tsd.c (pthread_setspecific): Totally revamped TSD.
(pthread_getspecific): Ditto.
(pthread_create): Ditto.
(pthread_delete): Ditto.
Sun Oct 11 22:44:55 1998 Ross Johnson <rpj@ixobrychus.canberra.edu.au>
* global.c (_pthread_tsd_key_table): Add new global.
* implement.h (_pthread_tsd_key_t and struct _pthread_tsd_key):
Add.
(struct _pthread): Remove destructorstack.
* cleanup.c (_pthread_destructor_run_all): Rename from
_pthread_destructor_pop_all. The key destructor stack was made
global rather than per-thread. No longer removes destructor nodes
from the stack. Comments updated.
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* create.c (_pthread_start_call): Add STDCALL prefix.
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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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Thu Aug 6 15:19:22 1998 Ross Johnson <rpj@swan.canberra.edu.au>
* create.c (pthread_create): Typecast (HANDLE) NULL.
Typecast (unsigned (*)(void *)) start_routine.
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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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* implement.h: Remove _pthread_find_entry() prototype.
* private.c: Extend comments.
Remove _pthread_find_entry() - no longer needed.
* create.c (_pthread_start_call): Add call to TlsSetValue() to
store the thread ID.
* dll.c (PthreadsEntryPoint): Implement. This is called
whenever a process loads the DLL. Used to initialise thread
local storage.
* implement.h: Add _pthread_threadID_TlsIndex.
Add ()s around _PTHREAD_VALID expression.
* misc.c (pthread_self): Re-implement using Win32 TLS to store
the threads own ID.
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* cleanup.c (_pthread_handler_push): Same as below.
* create.c (pthread_create): Same as below.
* private.c (_pthread_new_thread): Rename "new" to "new_thread".
Since when has a C programmer been required to know C++?
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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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* create.c (_pthread_start_call): Insert missing ")".
Add "us" arg to _pthread_exit() call.
(pthread_create): Modify to use new thread allocation scheme.
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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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* exit.c (_pthread_exit): New function. Called from pthread_exit()
and _pthread_start_call() to exit the thread. It allows an extra
argument which is the return code passed to _endthreadex().
* create.c (_pthread_start_call): Change pthread_exit() call to
_pthread_exit() call.
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* exit.c (_pthread_vacuum): Add thread entry deletion code
moved from _pthread_start_call(). See next item.
(pthread_exit): Remove longjmp(). Add mutex lock around thread table
manipulation code. This routine now calls _enthreadex().
* create.c (_pthread_start_call): Remove setjmp() call and move
cleanup code out. Call pthread_exit(NULL) to terminate the thread.
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* sync.c: Rename all instances of _pthread_count_mutex to
_pthread_table_mutex.
* implement.h: Rename _pthread_count_mutex to
_pthread_table_mutex.
* global.c: Rename _pthread_count_mutex to
_pthread_table_mutex.
* create.c (pthread_create): Add critical sections.
(_pthread_start_call): Rename _pthread_count_mutex to
_pthread_table_mutex.
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* condvar.c (cond_wait): Add cancelation point. This applies the
point to both pthread_cond_wait() and pthread_cond_timedwait().
* exit.c (pthread_exit): Rename "this" to "us".
* implement.h: Add comment.
* sync.c (pthread_join): I've satisfied myself that pthread_detach()
does set the detached attribute in the thread entry attributes
to PTHREAD_CREATE_DETACHED. "if" conditions were changed to test
that attribute instead of a separate flag.
* create.c (pthread_create): Rename "this" to "us".
(pthread_create): cancelstate and canceltype are not attributes
so the copy to thread entry attribute storage was removed.
Only the thread itself can change it's cancelstate or canceltype,
ie. the thread must exist already.
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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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* create.c (pthread_create): Change . to -> in sigmask memcpy() args.
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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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* sync.c (pthread_detach): Use equality test, not assignment.
* create.c (_pthread_start_call): Add call to Win32 CloseHandle()
if thread is detached.
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pthread_exit() to use.
* private.c (_pthread_new_thread_entry): Initialise joinvalueptr to
NULL.
* create.c (_pthread_start_call): Rewrite to facilitate joins.
pthread_exit() will do a longjmp() back to here. Does appropriate
cleanup and exit/return from the thread.
(pthread_create): _beginthreadex() now passes a pointer to our
thread table entry instead of just the call member of that entry.
* implement.h (_pthread_threads_thread): New member
void ** joinvalueptr.
(_pthread_call_t): New member jmpbuf env.
* exit.c (pthread_exit): Major rewrite to handle joins and handing
value pointer to joining thread. Uses longjmp() back to
_pthread_start_call().
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* create.c (pthread_create): Ensure values of new attribute members
are copied to the thread attribute object.
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* create.c (pthread_create): Arg to _pthread_new_thread_entry()
changed. See next entry. Move mutex locks out. Changes made yesterday
and today allow us to start the new thread running rather than
temporarily suspended.
* private.c (_pthread_new_thread_entry): _pthread_thread_table
was changed back to a table of thread structures rather than pointers.
As such we're trading storage for increaded speed. This routine
was modified to work with the new table. Mutex lock put in around
global data accesses.
(_pthread_find_thread_entry): Ditto
(_pthread_delete_thread_entry): Ditto
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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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* 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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* 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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* create.c (pthread_create): A dummy stub right now.
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