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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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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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* 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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* implement.h (_PTHREAD_CANCEL_DEFAULTS): Remove. Bit fields
proved to be too cumbersome. Set the defaults in attr.c using the
public PTHREAD_CANCEL_* constants.
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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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* implement.h (_pthread_attr_t): Moved to a public definition in
pthread.h. There was little gain in hiding these details.
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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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* 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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* implement.h (_pthread_condattr_t): Remove shared attribute.
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* implement.h (_pthread_mutexattr_t): Remove shared attribute.
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* implement.h (PTHREADS_THREADS_MAX): Remove trailing semicolon.
(PTHREADS_STACK_MIN): Specify; needs confirming.
(_pthreads_attr_t): Define this type.
(_pthreads_condattr_t): Likewise.
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* implement.h (_pthread_mutex_attr_t): Define this implementation
internal type. Application programmers only see a mutex attribute
object as a void pointer.
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