Gregory Nutt
698597a838
task_delete() now obeys all cancellation point semantics.
2016-12-10 14:39:19 -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
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
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.
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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
Gregory Nutt
f40fbaa4b9
sched/task: task_restart() test not supported on SMP systems. This is not fully implemented.
2016-11-19 11:41:05 -06:00
Gregory Nutt
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).
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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
Gregory Nutt
86b79b33cf
Reserver the name 'err' for other purposes
2016-06-11 14:40:07 -06:00
Gregory Nutt
f0671bae2f
SMP: Reorder some logic related to task exit() and restart() for logic of SMP.
2016-03-22 18:19:57 -06:00
Gregory Nutt
6e3107650d
nuttx/sched: Replace irqsave() with enter_critical_section(); replace irqrestore() with leave_critical_section()
2016-02-14 08:17:46 -06:00
Gregory Nutt
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
Gregory Nutt
74db48202e
sched/: Replace explict references to g_readytorun with indirect references via the this_task() macro
2016-02-06 17:44:41 -06:00
Gregory Nutt
79d554939e
sched/: Fix some spacing issues
2015-10-07 19:59:14 -06:00
Gregory Nutt
cb9e27c3b0
Standardize naming used for public data and function groupings
2015-10-02 16:30:35 -06:00
Paul A. Patience
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
Gregory Nutt
b4423c1eed
Make some file section headers more consistent with standard
2015-04-08 06:47:36 -06:00
Gregory Nutt
d798dd37a7
Replace os_internal.h with sched/sched.h in files that actually reference something in sched.h
2014-08-08 17:53:55 -06:00
Gregory Nutt
23a334c066
Move task control files from sched/ to sched/task
2014-08-08 16:44:08 -06:00
