Gregory Nutt
031fbfc6bc
sched/: Remove dangling space at the end of lines.
2017-06-28 13:33:04 -06:00
Gregory Nutt
5e8037390c
Fix problems in last commit noted by Jeongchan Kim: last change returned -EINVAL vs EINVAL; Treat the case where the mutex is already unlocked just like the case where the mutex is held by another thread -- return EPERM.
2017-06-22 06:26:00 -06:00
Gregory Nutt
0c3aef9591
Trivial typo fix
2017-06-21 06:48:13 -06:00
Gregory Nutt
6618336a39
pthread_mutex_unlock(): Missing check for the case where pthread_mutex_lock() is called when the mutex is not locked. In that case, it would increment the underlying semaphore avove 1. This is the fix for a problem noted by initialkjc@yahoo.com.
2017-06-21 06:40:09 -06:00
Gregory Nutt
23a6ff5846
pthreads: Move pthread_barrier_init, pthread_barrier_destroy, and pthread_barrier_wait from sched/pthreads to libc/pthreads. This just coordinate other OS interface calls but are not a fundamental OS interfaces and, hence, do not belong within the OS.
2017-06-14 07:59:54 -06:00
Gregory Nutt
ae168bffa0
pthreads: Move pthread_cond_init and pthread_cond_destory from sched/pthreads to libc/pthreads. This just coordinate other OS interface calls but are not a fundamental OS interfaces and, hence, do not belong within the OS.
2017-06-14 07:48:45 -06:00
Gregory Nutt
557fd6504f
pthreads: Move pthread_once from sched/pthreads to libc/pthreads. pthread_once just coordinates other OS interface calls but is not a fundamental OS interface and, hence, does not belong within the OS.
2017-06-14 07:31:10 -06:00
Gregory Nutt
8ae5450268
pthreads: Move pthread_yield from sched/pthreads to libc/pthreads. it is a simple wrapper for sched_yield and does not belong within the OS.
2017-06-14 07:31:10 -06:00
Gregory Nutt
0fe9c2f3f9
pthread mutex: Remove bogus DEBUGASSERT. Problem noted by Jussi Kivilinna
2017-06-01 06:28:23 -06:00
Gregory Nutt
90dda9357e
pthread robust mutexes: Fix memmory trashing problem: the main task may also use mutexes; need to check thread type before accessing pthread-specific mutex data structures. Problem noted by Jussi Kivilinna.
2017-05-31 10:55:37 -06:00
Gregory Nutt
a8708424c2
pthread_trylock: Fixes a problem in pthread_trylock() noted by initialkjc@yahoo.com. When CONFIG_PTHREAD_MUTEX_UNSAFE=y, the special return value EAGAIN was not being detected due to differences in reporting of returned values.
2017-05-29 07:05:06 -06:00
Gregory Nutt
0de294a586
Fix lots of occurrences of 'the the', 'the there', 'the these', 'the then', 'the they.
2017-05-11 13:35:56 -06:00
Gregory Nutt
ba12817f9c
Upate some comments
2017-05-11 13:15:31 -06:00
EunBong Song
03bd3688bc
pthread: Fix compilation error on pthread_cond_wait when CONFIG_CANCELLATION_POINTS and CONFIG_PTHREAD_MUTEX_UNSAFE are enabled.
2017-05-02 07:14:04 -06:00
Jussi Kivilinna
c57d49f420
clock: Add new type ssystime_t for relative 64-bit ticks, change ticks<->time conversion functions to use ssystime_t
2017-04-21 08:51:31 -06:00
Juha Niskanen (Haltian)
b4747286b1
Add logic to disable cancellation points within the OS. This is useful when an internal OS function that is NOT a cancellation point calls an OS function which is a cancellation point. In that case, irrecoverable states may occur if the cancellation is within the OS.
2017-04-11 11:03:25 -06:00
Gregory Nutt
c08ba10d32
include/: Add some definitions needed by apps/wireless/wapi
2017-04-10 14:56:23 -06:00
Gregory Nutt
c36bf090f0
pthread: Minor logic fix in pthread_mutex_consistent. Updat some comments.
2017-04-10 10:10:41 -06:00
Gregory Nutt
948332ca34
pthreads: Backed most of last pthread changes. Found the 'real' root poblem. A one like error in pthread_mutex.c.
2017-04-10 09:51:03 -06:00
Gregory Nutt
b51b72b2db
pthreads: Re-order some operations so that mutexes are placed in the inconsistent state BEFORE the clean-up callbacks are called.
2017-04-10 08:11:16 -06:00
Gregory Nutt
eb344d7260
Fix an assertion noted by Jussi Kivilinna.
...
This was a consequence of the recent robust mutex changes. If robust mutexes are selected, then each mutex that a thread takes is retained in a list in threads TCB. If the thread exits and that list is not empty, then we know that the thread exitted while holding mutexes. And, in that case, each will be marked as inconsistent and the any waiter for the thread is awakened.
For the case of pthread_mutex_trywait(), the mutex was not being added to the list! while not usually a fatal error, this was caught by an assertion when pthread_mutex_unlock() was called: It tried to remove the mutex from the TCB list and it was not there when, of course, it shoule be.
The fix was to add pthread_mutex_trytake() which does sem_trywait() and if successful, does correctly add the mutext to the TCB list. This should eliminated the assertion.
2017-03-29 07:50:40 -06:00
Gregory Nutt
b07d3fc305
Rename CONFIG_MUTEX_TYPES to CONFIG_PTHREAD_MUTEX_TYPES
2017-03-27 09:08:14 -06:00
Gregory Nutt
f2f798cb29
pthread mutexes: Finish logic to support configuration mutex robustness.
2017-03-27 08:50:45 -06:00
Gregory Nutt
666208cf23
pthread mutexes: Add option to support both unsafe and robust mutexes via pthread_mutexattr_get/setrobust().
2017-03-26 18:37:24 -06:00
Gregory Nutt
8b3c554e45
pthreads: Add a configuration option to disable robust mutexes and revert to the traditional unsafe mutexes.
2017-03-26 17:37:28 -06:00
Gregory Nutt
86ab384d77
Forget to add some files in previous commits
2017-03-26 15:46:19 -06:00
Gregory Nutt
8b23c16b90
pthreads: pthread_mutex_consistent() needs to clear flags.
2017-03-26 14:44:57 -06:00
Gregory Nutt
34c5e1c18f
Minor cleanup from recent changes.
2017-03-26 14:04:07 -06:00
Gregory Nutt
5a69453e16
pthreads: Add some assertions.
2017-03-26 13:54:43 -06:00
Gregory Nutt
fe03ef02c4
when pthread exits or is cancelled, mutexes held by thread are marked inconsistent and the highest priority thread waiting for the mutex is awakened.
2017-03-26 13:37:05 -06:00
Gregory Nutt
6e623ce06f
pthreads: Partial implementation of final part of robust mutexes: Keep list of all mutexes held by a thread in a list in the TCB.
2017-03-26 12:46:57 -06:00
Gregory Nutt
2c37d369ab
pthread: Fix return value of pthread_give/takesemaphore(). Add option to pthread_takesemaphore to ignore EINTR or not.
2017-03-26 11:22:17 -06:00
Gregory Nutt
363403fb1f
pthreads: Add more robustness characteristics: pthread_mutex_lock() and trylock() will now return EOWNERDEAD if the mutex is locked by a thread that no longer exists. Add pthread_mutex_consistent() to recover from this situation.
2017-03-26 10:35:23 -06:00
Gregory Nutt
5fb85451cb
Update some comments
2017-03-22 08:08:43 -06:00
Gregory Nutt
4dbc0a27c6
pthread_create: g_pthreadname[] is not used if CONFIG_TASK_NAME_SIZE==0.
2017-02-26 18:15:16 -06:00
Gregory Nutt
cb7c5f9921
Implement strings.h macros as inline functions when possible for better C++ compatibility.
2017-02-22 10:20:58 -06:00
Gregory Nutt
d5b1ca14e2
Update README and some comments.
2017-01-02 13:54:07 -06:00
Gregory Nutt
d648f9c8b4
Add task_testcancel()
2016-12-10 16:34:14 -06:00
Gregory Nutt
f132960789
Add task_setcanceltype()
2016-12-10 16:06:14 -06:00
Gregory Nutt
5fb207eb36
Add task_setcancelstate()
2016-12-10 15:16:46 -06:00
Gregory Nutt
698597a838
task_delete() now obeys all cancellation point semantics.
2016-12-10 14:39:19 -06:00
Gregory Nutt
b52e4e5ecd
Move cancellation point definitions to their own header file.
2016-12-10 09:08:26 -06:00
Gregory Nutt
bc3ca25cc7
Cancellation points: Close up some logic to eliminte some race conditions.
2016-12-10 08:36:58 -06:00
Gregory Nutt
e62b3bccd3
pthread_setcanceltype() and pthread_testcancel() do not have to be system calls if cancellation points are not enabled.
2016-12-10 07:40:48 -06:00
Gregory Nutt
a0f567f4a3
Update TODO, cosmetic changes, spelling -- US English spells it canceled and canceling vs cancelled and cancelling. No idea why.
2016-12-09 18:39:40 -06:00
Gregory Nutt
a76e729b0d
Trivial, cosmetic
2016-12-09 17:27:57 -06:00
Gregory Nutt
78cdc9f113
Fix a typo in a debug assertion.
2016-12-09 16:59:10 -06:00
Gregory Nutt
7ee0862e67
Merge remote-tracking branch 'origin/master' into cancelpt
2016-12-09 16:54:15 -06:00
Gregory Nutt
b07964461e
pthread_mutex_destroy(): Fix an error in destorynig a mutex which can occur after a pthread has been canceled while holding the mutex.
2016-12-09 16:53:29 -06:00
Gregory Nutt
7fce8022c6
Finishes all cancellation point logic
2016-12-09 16:50:34 -06:00
