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f132960789
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1017 Commits

Author SHA1 Message Date
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
6997cda1b5 Grrr... cloned typos! 2016-12-10 09:45:55 -06:00
Gregory Nutt
842ec7e612 ifdef out some non-reachable code 2016-12-10 09:43:04 -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
018eb7c1d2 Cancellation points no longer depend on EXPERIMENTAL 2016-12-09 17:44:37 -06:00
Gregory Nutt
a76e729b0d Trivial, cosmetic 2016-12-09 17:27:57 -06:00
Gregory Nutt
113d8bdcca Fix some SMP-related compilation errors 2016-12-09 17:10:59 -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
Gregory Nutt
d8783a7345 Update Documentation 2016-12-09 14:41:54 -06:00
Gregory Nutt
3eba0acb1c More cancellation points. 2016-12-09 13:49:36 -06:00
Gregory Nutt
c9ca97b4b5 cancellation points are basically function. More tested is needed and additional cancellation points must be implemented before this can be merged back to master. 2016-12-09 12:01:18 -06:00
Gregory Nutt
018db84567 Flesh out more cancellation point logic. 2016-12-09 10:31:40 -06:00
Gregory Nutt
d35e589d56 Flesh basic cancellation point support 2016-12-09 09:44:23 -06:00
Gregory Nutt
82a79b9c1b Add framework for cancellation point support. 2016-12-09 08:13:28 -06:00
Gregory Nutt
acaae12e8b Add pthread_testcancel(), pthread_testcancel(), and definitiions for cancellation types. 2016-12-09 07:23:00 -06:00
Gregory Nutt
6224e47533 pthread cleanup stack: Replace critical section with sched_lock/unlock(). The cleanup stack modification only needs to have the TCB stationary. The stack is never modified from interrupt level logic 2016-12-08 14:33:02 -06:00
Gregory Nutt
ab43681f15 Update TODO and some comments. 2016-12-08 10:24:40 -06:00
Gregory Nutt
a1fbc2ad0d pthreads: Add pthread_cleanup_push() and pthread_cleanup_pop() 2016-12-08 09:27:13 -06:00
Gregory Nutt
7632dfd6c7 Update some comments. 2016-12-08 07:52:02 -06:00
Gregory Nutt
a7b688e87b sched notes: Add additional note to see if/when CPU is started in SMP mode. 2016-12-07 09:08:20 -06:00
Gregory Nutt
9ed0387379 Olimex-LPC1766-STK: Enable procfs in NSH configuration. Automount /proc on startup. 2016-12-05 08:52:40 -06:00
Masayuki Ishikawa
13c9031a8d Fix DEBUGASSERT() in group_signal.c 2016-12-04 06:52:08 -06:00
Gregory Nutt
b78c3fcc30 Finish backing out previous change 2016-11-30 08:13:43 -06:00
Gregory Nutt
e6eb2e8bfa Back out the last change. I just noticed some complexities that need to be verified before this is released onto the world. 2016-11-30 07:41:48 -06:00
Gregory Nutt
8453343426 scheduler instrumentation: Add a little more protection for the SMP case 2016-11-30 07:24:15 -06:00
Gregory Nutt
9ee3f3b933 sched_note: Permit spinlock and critical section notes in in-memory buffer iff sched_not_get() interfaces is disabled. 2016-11-28 18:36:26 -06:00
Gregory Nutt
00215fbc98 sched_note: Add spinlock instrumentation; In SMP configurations, select to log only notes from certain CPUs 2016-11-28 10:33:46 -06:00
Gregory Nutt
d65be718c2 sched_note: Extend OS instrumentation to include some SMP events. 2016-11-27 17:14:57 -06:00
Gregory Nutt
e3fe320e08 SMP: Add support for linking spinlocks into a special, non-cached memory region. 2016-11-26 08:47:03 -06:00
Gregory Nutt
1d06e786e1 SMP: Clean-up and simplication of logic that I implemented late last night. 2016-11-26 07:05:27 -06:00
Gregory Nutt
a0e1af2614 SMP: Fix yet another potential deadlock 2016-11-25 23:04:27 -06:00
Gregory Nutt
eb9f8074c0 Update comments 2016-11-24 09:56:43 -06:00
Gregory Nutt
7bec4ffeec Update some comments 2016-11-23 17:40:01 -06:00
Gregory Nutt
d4037a30aa Update some comments 2016-11-23 13:20:18 -06:00
Gregory Nutt
f90525a5d1 SMP: Update some comments; trivial improvement by inlining static function. 2016-11-22 16:48:57 -06:00
Gregory Nutt
bac7153609 SMP: Add logic to avoid a deadlock condition when CPU1 is hung waiting for g_cpu_irqlock and CPU0 is waitin for g_cpu_paused 2016-11-22 11:34:16 -06:00
Gregory Nutt
130bfa3f6b Remove a assertion condition that appears to rarely cause false-alarm assertions. Teported by Petteri Aimonen 2016-11-21 14:43:56 -06:00
Gregory Nutt
558784d06f Spinlocks: Added capability to provide architecture-specific memory barriers. This was for i.MX6 but does not help with the SMP problems. It is still a good feature. 2016-11-21 11:55:59 -06:00
Gregory Nutt
2d1765a014 Remove more of those annoying empty comment blocks. 2016-11-21 07:34:27 -06:00
Gregory Nutt
0029c04dad task_restart: Make sure new task starts with pre-emption disabled and not in a critical section. 2016-11-21 07:33:23 -06:00
Gregory Nutt
cee8d59b58 Update TODO list 2016-11-20 12:26:08 -06:00
Gregory Nutt
e24f281401 This commit adds a new internal interfaces and fixes a problem with three APIs in the SMP configuration. The new internal interface is sched_cpu_pause(tcb). This function will pause a CPU if the task associated with 'tcb' is running on that CPU. This allows a different CPU to modify that OS data stuctures associated with the CPU. When the other CPU is resumed, those modifications can safely take place. 
The three fixes are to handle cases in the SMP configuration where one CPU does need to make modifications to TCB and data structures on a task that could be running running on another CPU.  Those three cases are task_delete(), task_restart(), and execution of signal handles.  In all three cases the solutions is basically the same:  (1) Call sched_cpu_pause(tcb) to pause the CPU on which the task is running, (2) perform the necessary operations, then (3) call up_cpu_resume() to restart the paused CPU.
 2016-11-20 07:57:18 -06:00