mirror of
https://github.com/Lime3DS/Lime3DS.git
synced 2024-11-25 11:06:57 +01:00
93 lines
3.2 KiB
C++
93 lines
3.2 KiB
C++
// Copyright 2014 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#include "common/common_types.h"
|
|
#include "common/logging/log.h"
|
|
#include "core/hle/kernel/address_arbiter.h"
|
|
#include "core/hle/kernel/thread.h"
|
|
#include "core/memory.h"
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Kernel namespace
|
|
|
|
namespace Kernel {
|
|
|
|
AddressArbiter::AddressArbiter() {}
|
|
AddressArbiter::~AddressArbiter() {}
|
|
|
|
SharedPtr<AddressArbiter> AddressArbiter::Create(std::string name) {
|
|
SharedPtr<AddressArbiter> address_arbiter(new AddressArbiter);
|
|
|
|
address_arbiter->name = std::move(name);
|
|
|
|
return address_arbiter;
|
|
}
|
|
|
|
ResultCode AddressArbiter::ArbitrateAddress(ArbitrationType type, VAddr address, s32 value,
|
|
u64 nanoseconds) {
|
|
switch (type) {
|
|
|
|
// Signal thread(s) waiting for arbitrate address...
|
|
case ArbitrationType::Signal:
|
|
// Negative value means resume all threads
|
|
if (value < 0) {
|
|
ArbitrateAllThreads(address);
|
|
} else {
|
|
// Resume first N threads
|
|
for (int i = 0; i < value; i++)
|
|
ArbitrateHighestPriorityThread(address);
|
|
}
|
|
break;
|
|
|
|
// Wait current thread (acquire the arbiter)...
|
|
case ArbitrationType::WaitIfLessThan:
|
|
if ((s32)Memory::Read32(address) < value) {
|
|
Kernel::WaitCurrentThread_ArbitrateAddress(address);
|
|
}
|
|
break;
|
|
case ArbitrationType::WaitIfLessThanWithTimeout:
|
|
if ((s32)Memory::Read32(address) < value) {
|
|
Kernel::WaitCurrentThread_ArbitrateAddress(address);
|
|
GetCurrentThread()->WakeAfterDelay(nanoseconds);
|
|
}
|
|
break;
|
|
case ArbitrationType::DecrementAndWaitIfLessThan: {
|
|
s32 memory_value = Memory::Read32(address);
|
|
if (memory_value < value) {
|
|
// Only change the memory value if the thread should wait
|
|
Memory::Write32(address, (s32)memory_value - 1);
|
|
Kernel::WaitCurrentThread_ArbitrateAddress(address);
|
|
}
|
|
break;
|
|
}
|
|
case ArbitrationType::DecrementAndWaitIfLessThanWithTimeout: {
|
|
s32 memory_value = Memory::Read32(address);
|
|
if (memory_value < value) {
|
|
// Only change the memory value if the thread should wait
|
|
Memory::Write32(address, (s32)memory_value - 1);
|
|
Kernel::WaitCurrentThread_ArbitrateAddress(address);
|
|
GetCurrentThread()->WakeAfterDelay(nanoseconds);
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
LOG_ERROR(Kernel, "unknown type=%d", type);
|
|
return ResultCode(ErrorDescription::InvalidEnumValue, ErrorModule::Kernel,
|
|
ErrorSummary::WrongArgument, ErrorLevel::Usage);
|
|
}
|
|
|
|
// The calls that use a timeout seem to always return a Timeout error even if they did not put
|
|
// the thread to sleep
|
|
if (type == ArbitrationType::WaitIfLessThanWithTimeout ||
|
|
type == ArbitrationType::DecrementAndWaitIfLessThanWithTimeout) {
|
|
|
|
return ResultCode(ErrorDescription::Timeout, ErrorModule::OS, ErrorSummary::StatusChanged,
|
|
ErrorLevel::Info);
|
|
}
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
} // namespace Kernel
|