mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-26 22:51:12 +00:00
367 lines
No EOL
13 KiB
C++
367 lines
No EOL
13 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
#include "os_thread_manager_impl.pthread.hpp"
|
|
#include "os_thread_manager.hpp"
|
|
|
|
#include <pthread.h>
|
|
|
|
#if defined(ATMOSPHERE_OS_LINUX)
|
|
#include <sched.h>
|
|
#elif defined(ATMOSPHERE_OS_MACOS)
|
|
#include <sys/types.h>
|
|
#include <sys/sysctl.h>
|
|
#include <mach/mach.h>
|
|
|
|
namespace {
|
|
|
|
struct cpu_set_t {
|
|
uint64_t affinity_mask;
|
|
};
|
|
|
|
ALWAYS_INLINE void CPU_ZERO(cpu_set_t *cs) { cs->affinity_mask = 0; }
|
|
ALWAYS_INLINE void CPU_SET(int core, cpu_set_t *cs) { cs->affinity_mask |= (UINT64_C(1) << core); }
|
|
ALWAYS_INLINE bool CPU_ISSET(int core, cpu_set_t *cs) { return cs->affinity_mask & (UINT64_C(1) << core); }
|
|
|
|
constexpr size_t CPU_SETSIZE = BITSIZEOF(cpu_set_t{}.affinity_mask);
|
|
|
|
int sched_getaffinity(pid_t pid, size_t cpu_size, cpu_set_t *cs) {
|
|
/* Ignore the process id/cpu size arguments. */
|
|
static_cast<void>(pid);
|
|
static_cast<void>(cpu_size);
|
|
|
|
/* Get the core count. */
|
|
int32_t core_count = 0;
|
|
size_t size = sizeof(core_count);
|
|
if (const auto ret = ::sysctlbyname("machdep.cpu.core_count", std::addressof(core_count), std::addressof(size), 0, 0); ret != 0) {
|
|
return ret;
|
|
}
|
|
|
|
/* Set our cpu set structure. */
|
|
cs->affinity_mask = 0;
|
|
for (auto i = 0; i < core_count; ++i) {
|
|
cs->affinity_mask |= (UINT64_C(1) << i);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int pthread_setaffinity_np(pthread_t thread, size_t cpu_size, cpu_set_t *cs) {
|
|
/* Ignore the cpu size argument. */
|
|
static_cast<void>(cpu_size);
|
|
|
|
/* If the thread is allowed to be on more than one core, we'll ignore it. */
|
|
/* TODO: Do this properly? */
|
|
if (const auto pc = std::popcount(cs->affinity_mask); pc == 0 || pc > 1) {
|
|
return 0;
|
|
}
|
|
|
|
/* Create policy to bind to the core. */
|
|
thread_affinity_policy_data_t policy = { std::countr_zero(cs->affinity_mask) };
|
|
|
|
/* Get the underlying mach thread. */
|
|
thread_port_t mach_thread = pthread_mach_thread_np(thread);
|
|
|
|
/* Set the policy. */
|
|
thread_policy_set(mach_thread, THREAD_AFFINITY_POLICY, reinterpret_cast<thread_policy_t>(std::addressof(policy)), 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
#else
|
|
#error "Unknown OS for pthread CoreId get"
|
|
#endif
|
|
|
|
namespace ams::os::impl {
|
|
|
|
namespace {
|
|
|
|
constexpr size_t DefaultStackSize = 1_MB;
|
|
|
|
void *InvokeThread(void *arg) {
|
|
ThreadType *thread = static_cast<ThreadType *>(arg);
|
|
|
|
/* Invoke the thread. */
|
|
ThreadManager::InvokeThread(thread);
|
|
|
|
/* Set exit state. */
|
|
{
|
|
std::scoped_lock lk(util::GetReference(thread->cs_pthread_exit));
|
|
AMS_ASSERT(thread->exited_pthread == false);
|
|
|
|
thread->exited_pthread = true;
|
|
util::GetReference(thread->cv_pthread_exit).Broadcast();
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
os::ThreadType *DynamicAllocateAndRegisterThreadType() {
|
|
/* Get the thread manager. */
|
|
auto &thread_manager = GetThreadManager();
|
|
|
|
/* Allocate a thread. */
|
|
auto *thread = thread_manager.AllocateThreadType();
|
|
AMS_ABORT_UNLESS(thread != nullptr);
|
|
|
|
/* Setup the thread object. */
|
|
SetupThreadObjectUnsafe(thread, nullptr, nullptr, nullptr, nullptr, 0, DefaultThreadPriority);
|
|
thread->state = ThreadType::State_Started;
|
|
thread->auto_registered = true;
|
|
|
|
/* Set the thread's pthread handle. */
|
|
thread->pthread = pthread_self();
|
|
thread->ideal_core = thread_manager.GetCurrentCoreNumber();
|
|
thread->affinity_mask = thread_manager.GetThreadAvailableCoreMask();
|
|
|
|
/* Place the object under the thread manager. */
|
|
thread_manager.PlaceThreadObjectUnderThreadManagerSafe(thread);
|
|
|
|
return thread;
|
|
}
|
|
|
|
}
|
|
|
|
ThreadManagerPthreadImpl::ThreadManagerPthreadImpl(ThreadType *main_thread) {
|
|
/* Create tls slot for thread pointer. */
|
|
AMS_ABORT_UNLESS(pthread_key_create(std::addressof(m_tls_key), nullptr) == 0);
|
|
|
|
/* Setup the main thread object. */
|
|
SetupThreadObjectUnsafe(main_thread, nullptr, nullptr, nullptr, nullptr, DefaultStackSize, DefaultThreadPriority);
|
|
|
|
/* Setup the main thread's pthread information. */
|
|
main_thread->pthread = pthread_self();
|
|
main_thread->ideal_core = this->GetCurrentCoreNumber();
|
|
main_thread->affinity_mask = this->GetThreadAvailableCoreMask();
|
|
}
|
|
|
|
Result ThreadManagerPthreadImpl::CreateThread(ThreadType *thread, s32 ideal_core) {
|
|
/* Create the assert. */
|
|
/* TODO: Check for failure properly. */
|
|
pthread_t pthread;
|
|
const auto res = pthread_create(std::addressof(pthread), nullptr, &InvokeThread, thread);
|
|
AMS_ASSERT(res == 0);
|
|
|
|
/* Set the thread's pthread handle information. */
|
|
thread->pthread = pthread;
|
|
thread->ideal_core = ideal_core;
|
|
thread->affinity_mask = this->GetThreadAvailableCoreMask();
|
|
|
|
R_SUCCEED();
|
|
}
|
|
|
|
void ThreadManagerPthreadImpl::DestroyThreadUnsafe(ThreadType *thread) {
|
|
/* The thread must have exited. */
|
|
{
|
|
std::scoped_lock lk(util::GetReference(thread->cs_pthread_exit));
|
|
AMS_ABORT_UNLESS(thread->exited_pthread);
|
|
}
|
|
|
|
/* Join the thread. */
|
|
const auto ret = pthread_join(thread->pthread, nullptr);
|
|
AMS_ASSERT(ret == 0);
|
|
AMS_UNUSED(ret);
|
|
}
|
|
|
|
void ThreadManagerPthreadImpl::StartThread(const ThreadType *thread) {
|
|
/* Nothing is actually needed here, because pthreads cannot start suspended. */
|
|
/* TODO: Should we add a condvar/mutex for thread start? */
|
|
AMS_UNUSED(thread);
|
|
}
|
|
|
|
void ThreadManagerPthreadImpl::WaitForThreadExit(ThreadType *thread) {
|
|
/* Wait for the thread to exit. */
|
|
{
|
|
std::scoped_lock lk(util::GetReference(thread->cs_pthread_exit));
|
|
while (!thread->exited_pthread) {
|
|
util::GetReference(thread->cv_pthread_exit).Wait(util::GetPointer(thread->cs_pthread_exit));
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ThreadManagerPthreadImpl::TryWaitForThreadExit(ThreadType *thread) {
|
|
/* Check if the thread has exited. */
|
|
std::scoped_lock lk(util::GetReference(thread->cs_pthread_exit));
|
|
|
|
return thread->exited_pthread;
|
|
}
|
|
|
|
void ThreadManagerPthreadImpl::YieldThread() {
|
|
#if defined(ATMOSPHERE_OS_MACOS)
|
|
sched_yield();
|
|
#else
|
|
const auto ret = pthread_yield();
|
|
AMS_ASSERT(ret == 0);
|
|
AMS_UNUSED(ret);
|
|
#endif
|
|
}
|
|
|
|
bool ThreadManagerPthreadImpl::ChangePriority(ThreadType *thread, s32 priority) {
|
|
/* TODO: Should we set the thread's niceness value? */
|
|
AMS_UNUSED(thread, priority);
|
|
return true;
|
|
}
|
|
|
|
s32 ThreadManagerPthreadImpl::GetCurrentPriority(const ThreadType *thread) const {
|
|
return thread->base_priority;
|
|
}
|
|
|
|
ThreadId ThreadManagerPthreadImpl::GetThreadId(const ThreadType *thread) const {
|
|
#if defined(AMS_OS_IMPL_USE_PTHREADID_NP_FOR_THREAD_ID)
|
|
ThreadId tid;
|
|
const auto ret = pthread_threadid_np(thread->pthread, std::addressof(tid));
|
|
AMS_ABORT_UNLESS(ret == 0);
|
|
|
|
return tid;
|
|
#else
|
|
return thread->pthread;
|
|
#endif
|
|
}
|
|
|
|
void ThreadManagerPthreadImpl::SuspendThreadUnsafe(ThreadType *thread) {
|
|
AMS_UNUSED(thread);
|
|
AMS_ABORT("TODO: Linux SuspendThread Signal/Pause impl?");
|
|
}
|
|
|
|
void ThreadManagerPthreadImpl::ResumeThreadUnsafe(ThreadType *thread) {
|
|
AMS_UNUSED(thread);
|
|
AMS_ABORT("TODO: ResumeThread Signal/Pause impl?");
|
|
}
|
|
|
|
void ThreadManagerPthreadImpl::NotifyThreadNameChangedImpl(const ThreadType *thread) const {
|
|
/* TODO */
|
|
AMS_UNUSED(thread);
|
|
}
|
|
|
|
void ThreadManagerPthreadImpl::SetCurrentThread(ThreadType *thread) const {
|
|
const auto ret = pthread_setspecific(m_tls_key, thread);
|
|
AMS_ASSERT(ret == 0);
|
|
AMS_UNUSED(ret);
|
|
}
|
|
|
|
ThreadType *ThreadManagerPthreadImpl::GetCurrentThread() const {
|
|
/* Get the thread from tls index. */
|
|
ThreadType *thread = static_cast<ThreadType *>(pthread_getspecific(m_tls_key));
|
|
|
|
/* If the thread's TLS isn't set, we need to find it (and set tls) or make it. */
|
|
if (thread == nullptr) {
|
|
/* Get the current thread id. */
|
|
ThreadId self_tid;
|
|
pthread_t self_thread = pthread_self();
|
|
#if defined(AMS_OS_IMPL_USE_PTHREADID_NP_FOR_THREAD_ID)
|
|
const auto ret = pthread_threadid_np(self_thread, std::addressof(self_tid));
|
|
AMS_ABORT_UNLESS(ret == 0);
|
|
#else
|
|
self_tid = self_thread;
|
|
#endif
|
|
|
|
/* Try to find the thread. */
|
|
thread = GetThreadManager().FindThreadTypeById(self_tid);
|
|
if (thread == nullptr) {
|
|
/* Create the thread. */
|
|
thread = DynamicAllocateAndRegisterThreadType();
|
|
}
|
|
|
|
/* Set the thread's TLS. */
|
|
this->SetCurrentThread(thread);
|
|
}
|
|
|
|
return thread;
|
|
}
|
|
|
|
s32 ThreadManagerPthreadImpl::GetCurrentCoreNumber() const {
|
|
#if defined(ATMOSPHERE_OS_LINUX)
|
|
const auto core = sched_getcpu();
|
|
AMS_ABORT_UNLESS(core >= 0);
|
|
return core;
|
|
#elif defined(ATMOSPHERE_OS_MACOS)
|
|
return 0;
|
|
#else
|
|
AMS_ABORT("TODO: Unknown OS GetCurrentCoreNumber() under pthreads");
|
|
#endif
|
|
}
|
|
|
|
void ThreadManagerPthreadImpl::SetThreadCoreMask(ThreadType *thread, s32 ideal_core, u64 affinity_mask) const {
|
|
/* If we should use the default, set the actual ideal core. */
|
|
if (ideal_core == IdealCoreUseDefault) {
|
|
affinity_mask = this->GetThreadAvailableCoreMask();
|
|
ideal_core = util::CountTrailingZeros(affinity_mask);
|
|
affinity_mask = static_cast<decltype(affinity_mask)>(1) << ideal_core;
|
|
}
|
|
|
|
/* Lock the thread. */
|
|
std::scoped_lock lk(util::GetReference(thread->cs_thread));
|
|
|
|
/* Build the cpu affinity. */
|
|
cpu_set_t cpuset;
|
|
CPU_ZERO(std::addressof(cpuset));
|
|
for (size_t i = 0; i < std::min<size_t>(BITSIZEOF(affinity_mask), CPU_SETSIZE); ++i) {
|
|
if ((static_cast<decltype(affinity_mask)>(1) << i) & affinity_mask) {
|
|
CPU_SET(i, std::addressof(cpuset));
|
|
}
|
|
}
|
|
|
|
/* Set the cpu affinity. */
|
|
const auto ret = pthread_setaffinity_np(thread->pthread, sizeof(cpuset), std::addressof(cpuset));
|
|
AMS_ABORT_UNLESS(ret == 0);
|
|
|
|
/* Set the ideal core. */
|
|
if (ideal_core != IdealCoreNoUpdate) {
|
|
thread->ideal_core = ideal_core;
|
|
}
|
|
|
|
/* Set the tracked affinity mask. */
|
|
thread->affinity_mask = affinity_mask;
|
|
}
|
|
|
|
void ThreadManagerPthreadImpl::GetThreadCoreMask(s32 *out_ideal_core, u64 *out_affinity_mask, const ThreadType *thread) const {
|
|
/* Lock the thread. */
|
|
std::scoped_lock lk(util::GetReference(thread->cs_thread));
|
|
|
|
/* Set the output. */
|
|
if (out_ideal_core != nullptr) {
|
|
*out_ideal_core = thread->ideal_core;
|
|
}
|
|
if (out_affinity_mask != nullptr) {
|
|
*out_affinity_mask = thread->affinity_mask;
|
|
}
|
|
}
|
|
|
|
u64 ThreadManagerPthreadImpl::GetThreadAvailableCoreMask() const {
|
|
#if defined(ATMOSPHERE_OS_LINUX) || defined(ATMOSPHERE_OS_MACOS)
|
|
cpu_set_t cpuset;
|
|
CPU_ZERO(std::addressof(cpuset));
|
|
|
|
const auto ret = sched_getaffinity(0, sizeof(cpuset), std::addressof(cpuset));
|
|
AMS_ASSERT(ret == 0);
|
|
AMS_UNUSED(ret);
|
|
|
|
u64 mask = 0;
|
|
for (size_t i = 0; i < std::min<size_t>(BITSIZEOF(mask), CPU_SETSIZE); ++i) {
|
|
if (CPU_ISSET(i, std::addressof(cpuset))) {
|
|
mask |= static_cast<decltype(mask)>(1) << i;
|
|
}
|
|
}
|
|
|
|
AMS_ASSERT(mask != 0);
|
|
return mask;
|
|
#else
|
|
AMS_ABORT("TODO: Unknown OS GetThreadAvailableCoreMask() under pthreads");
|
|
#endif
|
|
}
|
|
|
|
} |