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48 commits

Author SHA1 Message Date
bunnei
4b9e1b6586 kernel: scheduler: Minor cleanup to remove duplicated code. 2020-11-29 01:31:52 -08:00
bunnei
5fc6bf96d8
Merge pull request #4323 from ReinUsesLisp/no-spin 
kernel/scheduler: Use std::mutex instead of spin lock
 2020-09-11 23:23:53 -07:00
Lioncash
f808258ed9 kernel/scheduler: Mark SchedulerLock constructor as nodiscard 
Allows the compiler to warn about cases where the constructor is used
but then immediately discarded, which is a potential cause of
locking/unlocking bugs.
 2020-08-14 04:43:44 -04:00
ReinUsesLisp
9b38f4fc55 kernel/scheduler: Use std::mutex instead of spin lock 
Profiling shows that this is a highly contested mutex, causing dimishing
results compared to a OS lock. std::mutex implementations can spin for a
while before falling back to an OS lock.

This avoids wasting precious CPU cycles in a no-op.
 2020-07-12 21:27:24 -03:00
Fernando Sahmkow
2f8947583f Core/Common: Address Feedback. 2020-06-27 18:20:06 -04:00
Fernando Sahmkow
d240143588 Kernel: Correct Host Context on Threads and Scheduler. 2020-06-27 11:36:15 -04:00
Fernando Sahmkow
7e2ce2f7f4 SingleCore: Improve Cycle timing Behavior and replace mutex in global scheduler for spinlock. 2020-06-27 11:36:02 -04:00
Fernando Sahmkow
a439cdf22e CPU_Manager: Unload/Reload threads on preemption on SingleCore 2020-06-27 11:35:43 -04:00
Fernando Sahmkow
6515c6e8c6 Kernel: Fixes, corrections and asserts to scheduler and different svcs. 2020-06-27 11:35:40 -04:00
Fernando Sahmkow
1c672128c4 Scheduler: Release old thread fiber before trying to switch to the next thread fiber. 2020-06-27 11:35:28 -04:00
Fernando Sahmkow
07993ac8c8 Kernel: Corrections to Scheduling. 2020-06-27 11:35:23 -04:00
Fernando Sahmkow
2a8837ff51 General: Add Asserts 2020-06-27 11:35:21 -04:00
Fernando Sahmkow
15a79eb0d7 SVC: Correct SendSyncRequest. 2020-06-27 11:35:14 -04:00
Fernando Sahmkow
e31425df38 General: Recover Prometheus project from harddrive failure 
This commit: Implements CPU Interrupts, Replaces Cycle Timing for Host 
Timing, Reworks the Kernel's Scheduler, Introduce Idle State and 
Suspended State, Recreates the bootmanager, Initializes Multicore 
system.
 2020-06-27 11:35:06 -04:00
bunnei
c083ea7d78 core: Implement separate A32/A64 ARM interfaces. 2020-03-02 21:51:57 -05:00
Fernando Sahmkow
d219a96cc8 Kernel: Address Feedback. 2020-02-22 11:18:07 -04:00
Fernando Sahmkow
ea956c823e Kernel: Implement Scheduler locks 2020-02-22 11:18:07 -04:00
Fernando Sahmkow
0728dfef84 Kernel: Make global scheduler depend on KernelCore 2020-02-22 11:18:06 -04:00
Fernando Sahmkow
1e6f8aba04 Core: Set all hardware emulation constants in a single file. 2020-02-11 20:19:11 -04:00
Lioncash
c3e43c7e81 kernel: Remove unnecessary includes 
Over the course of the changes to the kernel code, a few includes are no
longer necessary, particularly with the change over to std::shared_ptr
from Boost's intrusive_ptr.
 2019-12-07 22:37:05 -05:00
bunnei
9046d4a548
kernel: Replace usage of boost::intrusive_ptr with std::shared_ptr for kernel objects. (#3154) 
* kernel: Replace usage of boost::intrusive_ptr with std::shared_ptr for kernel objects.

- See https://github.com/citra-emu/citra/pull/4710 for details.
 2019-11-24 20:15:51 -05:00
Lioncash
12dc918937 kernel: Resolve sign conversion warnings 
Uncovered a bug within Thread's SetCoreAndAffinityMask() where an
unsigned variable (ideal_core) was being compared against "< 0", which
would always be a false condition.

We can also get rid of an unused function (GetNextProcessorId) which contained a sign
mismatch warning.
 2019-11-12 07:55:39 -05:00
Lioncash
6c8f28813c scheduler: Mark parameter of AskForReselectionOrMarkRedundant() as const 
This is only compared against, so it can be made const.
 2019-10-27 23:35:50 -04:00
Lioncash
2fb0bbff29 scheduler: Initialize class members directly where applicable 
Reduces the overall amount of code.
 2019-10-27 22:13:55 -04:00
Lioncash
2dc469ceba scheduler: Amend documentation comments 
Adjusts the formatting of a few of the comments an ensures they get
recognized as proper Doxygen comments.
 2019-10-27 22:12:32 -04:00
Fernando Sahmkow
3073615dbc Kernel: Address Feedback. 2019-10-15 11:55:25 -04:00
Fernando Sahmkow
25f8606a6d Kernel Scheduler: Make sure the global scheduler shutdowns correctly. 2019-10-15 11:55:24 -04:00
Fernando Sahmkow
2d382de6fa Scheduler: Corrections to YieldAndBalanceLoad and Yield bombing protection. 2019-10-15 11:55:15 -04:00
Fernando Sahmkow
b49c0dab87 Kernel: Initial implementation of thread preemption. 2019-10-15 11:55:14 -04:00
Fernando Sahmkow
103f3a2fe5 Scheduler: Add protections for Yield bombing 
In case of redundant yields, the scheduler will now idle the core for 
it's timeslice, in order to avoid continuously yielding the same thing 
over and over.
 2019-10-15 11:55:13 -04:00
Fernando Sahmkow
82218c925a Kernel: Style and Corrections 2019-10-15 11:55:12 -04:00
Fernando Sahmkow
3a94e7ea33 Comment and reorganize the scheduler 2019-10-15 11:55:11 -04:00
Fernando Sahmkow
b164d8ee53 Implement a new Core Scheduler 2019-10-15 11:55:04 -04:00
Lioncash
824b8e4086 kernel/scheduler: Remove unused parameter to AddThread() 
This was made unused in b404fcdf14, but
the parameter itself wasn't removed.
 2019-03-30 05:29:33 -04:00
Fernando Sahmkow
dde0814837 Use MultiLevelQueue instead of old ThreadQueueList 2019-03-27 14:34:32 -04:00
Lioncash
fad20213e6 kernel/scheduler: Pass in system instance in constructor 
Avoids directly relying on the global system instance and instead makes
an arbitrary system instance an explicit dependency on construction.

This also allows removing dependencies on some global accessor functions
as well.
 2019-03-04 17:01:37 -05:00
Zach Hilman
b5af41a07b scheduler: Only work steal higher priority threads from other cores 2018-12-03 17:29:30 -05:00
Zach Hilman
820d81b9a5 scheduler: Add explanations for YieldWith and WithoutLoadBalancing 2018-11-22 00:33:53 -05:00
Zach Hilman
409dcf0e0a svc: Implement yield types 0 and -1 2018-11-18 23:44:19 -05:00
Lioncash
6594853eb1 svc: Implement svcGetInfo command 0xF0000002 
This retrieves:

if (curr_thread == handle_thread) {
   result = total_thread_ticks + (hardware_tick_count - last_context_switch_ticks);
} else if (curr_thread == handle_thread && sub_id == current_core_index) {
   result = hardware_tick_count - last_context_switch_ticks;
}
 2018-10-26 12:49:11 -04:00
Lioncash
a58eefa7e4 kernel/scheduler: Take ARM_Interface instance by reference in the constructor 
It doesn't make sense to allow a scheduler to be constructed around a
null pointer.
 2018-09-25 16:00:17 -04:00
Lioncash
43e0d865fa core: Namespace all code in the arm subdirectory under the Core namespace 
Gets all of these types and interfaces out of the global namespace.
 2018-08-24 21:50:39 -04:00
Lioncash
e850ff63bc scheduler: Make HaveReadyThreads() a const member function 
This function doesn't modify instance state, so the const qualifier can
be added to it.
 2018-08-12 12:55:58 -04:00
Lioncash
bf45092c61 kernel: Move object class to its own source files 
General moving to keep kernel object types separate from the direct
kernel code. Also essentially a preliminary cleanup before eliminating
global kernel state in the kernel code.
 2018-08-01 23:34:42 -04:00
Lioncash
a2304fad16 kernel: Remove unnecessary includes 
Removes unnecessary direct dependencies in some headers and also gets
rid of indirect dependencies that were being relied on to be included.
 2018-07-31 10:15:17 -04:00
bunnei
91af2f94e8 scheduler: Protect scheduling functions with a global mutex. 2018-05-10 19:34:52 -04:00
bunnei
8db80d8389 scheduler: Cleanup based on PR feedback. 2018-02-19 16:46:42 -05:00
bunnei
c78d495161 kernel: Add Scheduler, which encapsulates the scheduling loading from Thread module. 2018-02-18 14:58:40 -05:00