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140 lines
4.9 KiB
140 lines
4.9 KiB
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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// SPDX-FileCopyrightText: 2013 Dolphin Emulator Project
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// SPDX-FileCopyrightText: 2014 Citra Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <string>
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#include <thread>
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#include "common/error.h"
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#include "common/logging/log.h"
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#include "common/assert.h"
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#include "common/thread.h"
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#ifdef __APPLE__
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#include <mach/mach.h>
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#elif defined(__HAIKU__)
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#include <kernel/OS.h>
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#elif defined(_WIN32)
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#include <windows.h>
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#include "common/string_util.h"
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#else
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#if defined(__Bitrig__) || defined(__DragonFly__) || defined(__FreeBSD__) || defined(__OpenBSD__)
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#include <sys/cpuset.h>
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#include <sys/_cpuset.h>
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#include <pthread_np.h>
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#endif
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#include <pthread.h>
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#include <sched.h>
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#endif
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#ifndef _WIN32
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#include <unistd.h>
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#endif
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#ifdef __FreeBSD__
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# define cpu_set_t cpuset_t
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#endif
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namespace Common {
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void SetCurrentThreadPriority(ThreadPriority new_priority) {
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#ifdef _WIN32
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int windows_priority = [&]() {
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switch (new_priority) {
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case ThreadPriority::Low: return THREAD_PRIORITY_BELOW_NORMAL;
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case ThreadPriority::Normal: return THREAD_PRIORITY_NORMAL;
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case ThreadPriority::High: return THREAD_PRIORITY_ABOVE_NORMAL;
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case ThreadPriority::VeryHigh: return THREAD_PRIORITY_HIGHEST;
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case ThreadPriority::Critical: return THREAD_PRIORITY_TIME_CRITICAL;
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default: return THREAD_PRIORITY_NORMAL;
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}
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}();
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SetThreadPriority(GetCurrentThread(), windows_priority);
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#elif defined(__HAIKU__)
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// TODO: We have priorities for 3D rendering applications - may help lavapipe?
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int priority = [&]() {
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switch (new_priority) {
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case ThreadPriority::Low: return B_LOW_PRIORITY;
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case ThreadPriority::Normal: return B_NORMAL_PRIORITY;
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case ThreadPriority::High: return B_DISPLAY_PRIORITY;
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case ThreadPriority::VeryHigh: return B_URGENT_DISPLAY_PRIORITY;
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case ThreadPriority::Critical: return B_URGENT_PRIORITY;
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default: return B_NORMAL_PRIORITY;
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}
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}();
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set_thread_priority(find_thread(NULL), priority);
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#else
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pthread_t this_thread = pthread_self();
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const auto scheduling_type = SCHED_OTHER;
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s32 max_prio = sched_get_priority_max(scheduling_type);
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s32 min_prio = sched_get_priority_min(scheduling_type);
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u32 level = (std::max)(u32(new_priority) + 1, 4U);
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struct sched_param params;
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if (max_prio > min_prio) {
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params.sched_priority = min_prio + ((max_prio - min_prio) * level) / 4;
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} else {
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params.sched_priority = min_prio - ((min_prio - max_prio) * level) / 4;
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}
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pthread_setschedparam(this_thread, scheduling_type, ¶ms);
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#endif
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}
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void SetCurrentThreadName(const char* name) {
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#ifdef _MSC_VER
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// Sets the debugger-visible name of the current thread.
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if (auto pf = (decltype(&SetThreadDescription))(void*)GetProcAddress(GetModuleHandle(TEXT("KernelBase.dll")), "SetThreadDescription"); pf)
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pf(GetCurrentThread(), UTF8ToUTF16W(name).data()); // Windows 10+
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else
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; // No-op
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#elif defined(__APPLE__)
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pthread_setname_np(name);
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#elif defined(__HAIKU__)
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rename_thread(find_thread(NULL), name);
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#elif defined(__Bitrig__) || defined(__DragonFly__) || defined(__FreeBSD__) || defined(__OpenBSD__)
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pthread_set_name_np(pthread_self(), name);
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#elif defined(__NetBSD__)
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pthread_setname_np(pthread_self(), "%s", (void*)name);
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#elif defined(__linux__) || defined(__CYGWIN__) || defined(__sun__) || defined(__glibc__) || defined(__managarm__)
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int ret = pthread_setname_np(pthread_self(), name);
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if (ret == ERANGE) {
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// Linux limits thread names to 15 characters and will outright reject any
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// attempt to set a longer name with ERANGE.
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char buf[16];
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size_t const len = std::min<size_t>(std::strlen(name), sizeof(buf) - 1);
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std::memcpy(buf, name, len);
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buf[len] = '\0';
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pthread_setname_np(pthread_self(), buf);
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}
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#elif defined(_WIN32)
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// MinGW with the POSIX threading model does not support pthread_setname_np
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// See for reference
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// https://gitlab.freedesktop.org/mesa/mesa/-/blame/main/src/util/u_thread.c?ref_type=heads#L75
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(void)name;
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#else
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pthread_setname_np(pthread_self(), name);
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#endif
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}
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void PinCurrentThreadToPerformanceCore(size_t core_id) {
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ASSERT(core_id < 4);
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// If we set a flag for a CPU that doesn't exist, the thread may not be allowed to
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// run in ANY processor!
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auto const total_cores = std::thread::hardware_concurrency();
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if (core_id < total_cores) {
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#if defined(__linux__) || defined(__FreeBSD__)
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cpu_set_t set;
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CPU_ZERO(&set);
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CPU_SET(core_id, &set);
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pthread_setaffinity_np(pthread_self(), sizeof(set), &set);
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#elif defined(_WIN32)
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DWORD set = 1UL << core_id;
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SetThreadAffinityMask(GetCurrentThread(), set);
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#else
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// No pin functionality implemented
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#endif
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}
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}
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} // namespace Common
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