82a79b9c1b
Add framework for cancellation point support.
2016-12-09 08:13:28 -06:00
acaae12e8b
Add pthread_testcancel(), pthread_testcancel(), and definitiions for cancellation types.
2016-12-09 07:23:00 -06:00
ab43681f15
Update TODO and some comments.
2016-12-08 10:24:40 -06:00
a1fbc2ad0d
pthreads: Add pthread_cleanup_push() and pthread_cleanup_pop()
2016-12-08 09:27:13 -06:00
7632dfd6c7
Update some comments.
2016-12-08 07:52:02 -06:00
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
2d1765a014
Remove more of those annoying empty comment blocks.
2016-11-21 07:34:27 -06:00
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
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
f40fbaa4b9
sched/task: task_restart() test not supported on SMP systems. This is not fully implemented.
2016-11-19 11:41:05 -06:00
5ca9128c38
Update comments
2016-11-19 08:33:55 -06:00
ceacacbc63
vfork(): Fix a race condition in the SMP case. Existing logic depended on the fact that the child would not run until waitpid was called because the child had the same priority as the parent. BUT in the SMP case that is not true... the child may run immediately on a different CPU.
2016-11-19 07:30:01 -06:00
8669183852
sched/pthread and task: When a pthread is started, there is a small bit of logic that will run on the thread of execution of the new pthread. In the case where the new pthread has a lower priority than the parent thread, then this could cause both the parent thread and the new pthread to be blocked at the priority of the lower priority pthread (assuming that CONFIG_PRIORITY_INHERITANCE is not selected).
...
This change temporarily boosts the priority of the new pthread to at least the priority of the new pthread to at least the priority of the parent thread. When that bit of logic has executed on the thread of execution of the new pthread, it will then drop to the correct priority (if necessary) before calling into the new pthread's entry point.
2016-10-01 11:38:22 -06:00
75104b0808
Remove duplicate function prototype from wrong header file
2016-10-01 10:56:42 -06:00
952268274a
sched/: Fix misplaced right bracket; remove redundant assertion.
2016-09-06 12:27:12 -06:00
7582c2344c
sched/: Eliminate calculation of a possibly unused value.
2016-09-06 10:28:19 -06:00
e034c78516
improve some assertions; add some comments.
2016-09-06 10:21:41 -06:00
27919549f1
sched/: Simplify some child/parent logic
2016-09-06 08:40:55 -06:00
05aa586aa6
sched/: Move fields related to parent/child task relationship out of TCB into group structure.
2016-09-06 08:28:31 -06:00
858af4295c
The TCB nchildren field should not be incremented when pthreads are created.
2016-09-06 07:34:36 -06:00
13cac3b592
sched/: Change some *err() message to *info() messages if what was a *dbg() message does not indicate and error condition.
2016-06-11 16:42:42 -06:00
a1469a3e95
Add CONFIG_DEBUG_ERROR. Change names of *dbg() * *err()
2016-06-11 15:50:49 -06:00
86b79b33cf
Reserver the name 'err' for other purposes
2016-06-11 14:40:07 -06:00
1cdc746726
Rename CONFIG_DEBUG to CONFIG_DEBUG_FEATURES
2016-06-11 14:14:08 -06:00
fc3540cffe
Replace all occurrences of vdbg with vinfo
2016-06-11 11:59:51 -06:00
6cfe56202d
Backout 3f731241cb. It is a good idea, but has some unpleasant side effect... like SYSLOG and dbg() no longer work
2016-04-18 18:55:36 -06:00
3f731241cb
fs/inode/, fs/vfs/, and sched/task/: File and socket descriptors are no longer allocated for kernel threads. They must use SYSLOG for output and the low-level psock interfaces for network I/O. This saves a little memory which might be important for small footprint configurations.
2016-04-14 10:14:38 -06:00
3fba968bb0
Fix an error when a task with open message queue descriptors is killed via task_delete(). Noted by Anton Gropyanov.
2016-04-11 11:14:18 -06:00
f0671bae2f
SMP: Reorder some logic related to task exit() and restart() for logic of SMP.
2016-03-22 18:19:57 -06:00
7f19631338
sched/: Add option to buffer scheduler instrumentation data in memory.
2016-03-17 09:49:43 -06:00
0fb035f76b
Standardize some naming in code section comments
2016-02-21 18:09:04 -06:00
143d287f11
Fix some missing header file inclusions and a misplaced semi-colon from recent commits
2016-02-21 11:27:55 -06:00
a633353ec3
Add a CPU affinity set to the TCB if SMP is enable and use this CPU set as a mask for determining which CPUs the thread may run on. Add an affinity field to the attrributes to permit controlling which CPUs a pthread may run on. Implements pthread_att_setaffinity_np() and pthread_attr_getaffinity_np().
2016-02-19 17:33:35 -06:00
b50325bb38
SMP: Add funtions to perform atomic bit set/clear operations; fix two errors in SMP macros
2016-02-17 13:20:01 -06:00
3c46fa3f9f
Fix a contention problem in the previous critical section design
2016-02-15 08:50:20 -06:00
6e3107650d
nuttx/sched: Replace irqsave() with enter_critical_section(); replace irqrestore() with leave_critical_section()
2016-02-14 08:17:46 -06:00
85f663a8ee
SMP: Add non-reentrant spinlocks, fix pre-emption controls with SMP, and most of the basic scheduler support for SMP (still missing a few things)
2016-02-12 14:55:31 -06:00
c315479a04
SMP: Move IDLE thread init logic from sim to OS; need to assign unique IDs to each IDLE task
2016-02-11 14:11:26 -06:00
49227fa554
Scheduler: Replace the boolean 'prioritized' with a uint8_t bit set so that additional attributes of a list can be specified without adding more boolean values.
2016-02-11 08:06:33 -06:00
292d2fe648
Correct naming of a TCB flag; update some comments
2016-02-10 16:53:34 -06:00
74db48202e
sched/: Replace explict references to g_readytorun with indirect references via the this_task() macro
2016-02-06 17:44:41 -06:00
79d554939e
sched/: Fix some spacing issues
2015-10-07 19:59:14 -06:00
0b12dbf95d
Fix some spacing problems
2015-10-04 15:04:00 -06:00
16b32bbadd
Standardize the width of all comment boxes in C files
2015-10-03 07:25:53 -06:00
5b51a9fcdd
Standardize the width of all comment boxes in C files
2015-10-02 17:43:18 -06:00
cb9e27c3b0
Standardize naming used for public data and function groupings
2015-10-02 16:30:35 -06:00
3b89eabd50
Correct #if to #ifdef when the macro can be undefined. Fix bug in AT24XX driver: it should compare AT24XX_ADDRSIZE to 2.
2015-09-01 13:52:29 -04:00
51f386d08a
Fix more common typos
2015-08-16 11:07:23 -06:00
768d892188
Add si_errno to siginfo_t
2015-08-14 10:10:32 -06:00
12cdd2a8fe
Fix some bad conditional compilation
2015-07-24 12:27:15 -06:00
Gregory Nutt