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author | Subv <subv2112@gmail.com> | 2017-01-05 19:12:39 +0100 |
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committer | Subv <subv2112@gmail.com> | 2017-01-05 19:12:39 +0100 |
commit | 933df2606a34d4e609e890f45d0bef11e01da0ee (patch) | |
tree | 902f603a836ddc4679d86fd66da9db7ce9547ad4 /src/core/hle | |
parent | Merge pull request #2393 from Subv/synch (diff) | |
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Diffstat (limited to 'src/core/hle')
-rw-r--r-- | src/core/hle/kernel/thread.cpp | 27 |
1 files changed, 0 insertions, 27 deletions
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp index 9109bd10b..5ff75803f 100644 --- a/src/core/hle/kernel/thread.cpp +++ b/src/core/hle/kernel/thread.cpp @@ -156,28 +156,6 @@ void ArbitrateAllThreads(u32 address) { } } -/// Boost low priority threads (temporarily) that have been starved -static void PriorityBoostStarvedThreads() { - u64 current_ticks = CoreTiming::GetTicks(); - - for (auto& thread : thread_list) { - // TODO(bunnei): Threads that have been waiting to be scheduled for `boost_ticks` (or - // longer) will have their priority temporarily adjusted to 1 higher than the highest - // priority thread to prevent thread starvation. This general behavior has been verified - // on hardware. However, this is almost certainly not perfect, and the real CTR OS scheduler - // should probably be reversed to verify this. - - const u64 boost_timeout = 2000000; // Boost threads that have been ready for > this long - - u64 delta = current_ticks - thread->last_running_ticks; - - if (thread->status == THREADSTATUS_READY && delta > boost_timeout) { - const s32 priority = std::max(ready_queue.get_first()->current_priority - 1, 0); - thread->BoostPriority(priority); - } - } -} - /** * Switches the CPU's active thread context to that of the specified thread * @param new_thread The thread to switch to @@ -211,9 +189,6 @@ static void SwitchContext(Thread* new_thread) { ready_queue.remove(new_thread->current_priority, new_thread); new_thread->status = THREADSTATUS_RUNNING; - // Restores thread to its nominal priority if it has been temporarily changed - new_thread->current_priority = new_thread->nominal_priority; - Core::CPU().LoadContext(new_thread->context); Core::CPU().SetCP15Register(CP15_THREAD_URO, new_thread->GetTLSAddress()); } else { @@ -557,8 +532,6 @@ SharedPtr<Thread> SetupMainThread(u32 entry_point, s32 priority) { } void Reschedule() { - PriorityBoostStarvedThreads(); - Thread* cur = GetCurrentThread(); Thread* next = PopNextReadyThread(); |