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author | Lioncash <mathew1800@gmail.com> | 2019-03-05 17:54:06 +0100 |
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committer | Lioncash <mathew1800@gmail.com> | 2019-03-05 18:58:26 +0100 |
commit | ec6664f6d61f46569a2686b864ba3e9a0f85fc60 (patch) | |
tree | 67a78607f085efd3e4258fd90afd2aa2036d0448 /src/core/hle/kernel/address_arbiter.cpp | |
parent | Merge pull request #2185 from FearlessTobi/port-4630 (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/address_arbiter.cpp | 117 |
1 files changed, 58 insertions, 59 deletions
diff --git a/src/core/hle/kernel/address_arbiter.cpp b/src/core/hle/kernel/address_arbiter.cpp index a250d088d..f14283cca 100644 --- a/src/core/hle/kernel/address_arbiter.cpp +++ b/src/core/hle/kernel/address_arbiter.cpp @@ -9,6 +9,7 @@ #include "common/common_types.h" #include "core/core.h" #include "core/core_cpu.h" +#include "core/hle/kernel/address_arbiter.h" #include "core/hle/kernel/errors.h" #include "core/hle/kernel/object.h" #include "core/hle/kernel/process.h" @@ -17,53 +18,10 @@ #include "core/hle/result.h" #include "core/memory.h" -namespace Kernel::AddressArbiter { - -// Performs actual address waiting logic. -static ResultCode WaitForAddress(VAddr address, s64 timeout) { - SharedPtr<Thread> current_thread = GetCurrentThread(); - current_thread->SetArbiterWaitAddress(address); - current_thread->SetStatus(ThreadStatus::WaitArb); - current_thread->InvalidateWakeupCallback(); - - current_thread->WakeAfterDelay(timeout); - - Core::System::GetInstance().CpuCore(current_thread->GetProcessorID()).PrepareReschedule(); - return RESULT_TIMEOUT; -} - -// Gets the threads waiting on an address. -static std::vector<SharedPtr<Thread>> GetThreadsWaitingOnAddress(VAddr address) { - const auto RetrieveWaitingThreads = [](std::size_t core_index, - std::vector<SharedPtr<Thread>>& waiting_threads, - VAddr arb_addr) { - const auto& scheduler = Core::System::GetInstance().Scheduler(core_index); - const auto& thread_list = scheduler.GetThreadList(); - - for (const auto& thread : thread_list) { - if (thread->GetArbiterWaitAddress() == arb_addr) - waiting_threads.push_back(thread); - } - }; - - // Retrieve all threads that are waiting for this address. - std::vector<SharedPtr<Thread>> threads; - RetrieveWaitingThreads(0, threads, address); - RetrieveWaitingThreads(1, threads, address); - RetrieveWaitingThreads(2, threads, address); - RetrieveWaitingThreads(3, threads, address); - - // Sort them by priority, such that the highest priority ones come first. - std::sort(threads.begin(), threads.end(), - [](const SharedPtr<Thread>& lhs, const SharedPtr<Thread>& rhs) { - return lhs->GetPriority() < rhs->GetPriority(); - }); - - return threads; -} - +namespace Kernel { +namespace { // Wake up num_to_wake (or all) threads in a vector. -static void WakeThreads(std::vector<SharedPtr<Thread>>& waiting_threads, s32 num_to_wake) { +void WakeThreads(std::vector<SharedPtr<Thread>>& waiting_threads, s32 num_to_wake) { // Only process up to 'target' threads, unless 'target' is <= 0, in which case process // them all. std::size_t last = waiting_threads.size(); @@ -78,17 +36,20 @@ static void WakeThreads(std::vector<SharedPtr<Thread>>& waiting_threads, s32 num waiting_threads[i]->ResumeFromWait(); } } +} // Anonymous namespace -// Signals an address being waited on. -ResultCode SignalToAddress(VAddr address, s32 num_to_wake) { +AddressArbiter::AddressArbiter() = default; +AddressArbiter::~AddressArbiter() = default; + +ResultCode AddressArbiter::SignalToAddress(VAddr address, s32 num_to_wake) { std::vector<SharedPtr<Thread>> waiting_threads = GetThreadsWaitingOnAddress(address); WakeThreads(waiting_threads, num_to_wake); return RESULT_SUCCESS; } -// Signals an address being waited on and increments its value if equal to the value argument. -ResultCode IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake) { +ResultCode AddressArbiter::IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, + s32 num_to_wake) { // Ensure that we can write to the address. if (!Memory::IsValidVirtualAddress(address)) { return ERR_INVALID_ADDRESS_STATE; @@ -103,10 +64,8 @@ ResultCode IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_ return SignalToAddress(address, num_to_wake); } -// Signals an address being waited on and modifies its value based on waiting thread count if equal -// to the value argument. -ResultCode ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value, - s32 num_to_wake) { +ResultCode AddressArbiter::ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value, + s32 num_to_wake) { // Ensure that we can write to the address. if (!Memory::IsValidVirtualAddress(address)) { return ERR_INVALID_ADDRESS_STATE; @@ -135,8 +94,8 @@ ResultCode ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 valu return RESULT_SUCCESS; } -// Waits on an address if the value passed is less than the argument value, optionally decrementing. -ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout, bool should_decrement) { +ResultCode AddressArbiter::WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout, + bool should_decrement) { // Ensure that we can read the address. if (!Memory::IsValidVirtualAddress(address)) { return ERR_INVALID_ADDRESS_STATE; @@ -158,8 +117,7 @@ ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout, bool return WaitForAddress(address, timeout); } -// Waits on an address if the value passed is equal to the argument value. -ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout) { +ResultCode AddressArbiter::WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout) { // Ensure that we can read the address. if (!Memory::IsValidVirtualAddress(address)) { return ERR_INVALID_ADDRESS_STATE; @@ -175,4 +133,45 @@ ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout) { return WaitForAddress(address, timeout); } -} // namespace Kernel::AddressArbiter + +ResultCode AddressArbiter::WaitForAddress(VAddr address, s64 timeout) { + SharedPtr<Thread> current_thread = GetCurrentThread(); + current_thread->SetArbiterWaitAddress(address); + current_thread->SetStatus(ThreadStatus::WaitArb); + current_thread->InvalidateWakeupCallback(); + + current_thread->WakeAfterDelay(timeout); + + Core::System::GetInstance().CpuCore(current_thread->GetProcessorID()).PrepareReschedule(); + return RESULT_TIMEOUT; +} + +std::vector<SharedPtr<Thread>> AddressArbiter::GetThreadsWaitingOnAddress(VAddr address) const { + const auto RetrieveWaitingThreads = [](std::size_t core_index, + std::vector<SharedPtr<Thread>>& waiting_threads, + VAddr arb_addr) { + const auto& scheduler = Core::System::GetInstance().Scheduler(core_index); + const auto& thread_list = scheduler.GetThreadList(); + + for (const auto& thread : thread_list) { + if (thread->GetArbiterWaitAddress() == arb_addr) + waiting_threads.push_back(thread); + } + }; + + // Retrieve all threads that are waiting for this address. + std::vector<SharedPtr<Thread>> threads; + RetrieveWaitingThreads(0, threads, address); + RetrieveWaitingThreads(1, threads, address); + RetrieveWaitingThreads(2, threads, address); + RetrieveWaitingThreads(3, threads, address); + + // Sort them by priority, such that the highest priority ones come first. + std::sort(threads.begin(), threads.end(), + [](const SharedPtr<Thread>& lhs, const SharedPtr<Thread>& rhs) { + return lhs->GetPriority() < rhs->GetPriority(); + }); + + return threads; +} +} // namespace Kernel |