kernel: Rewrite pthread emulation (#1440)

* libkernel: Cleanup some function places

* kernel: Refactor thread functions

* kernel: It builds

* kernel: Fix a bunch of bugs, kernel thread heap

* kernel: File cleanup pt1

* File cleanup pt2

* File cleanup pt3

* File cleanup pt4

* kernel: Add missing funcs

* kernel: Add basic exceptions for linux

* gnmdriver: Add workload functions

* kernel: Fix new pthreads code on macOS. (#1441)

* kernel: Downgrade edeadlk to log

* gnmdriver: Add sceGnmSubmitCommandBuffersForWorkload

* exception: Add context register population for macOS. (#1444)

* kernel: Pthread rewrite touchups for Windows

* kernel: Multiplatform thread implementation

* mutex: Remove spamming log

* pthread_spec: Make assert into a log

* pthread_spec: Zero initialize array

* Attempt to fix non-Windows builds

* hotfix: change incorrect NID for scePthreadAttrSetaffinity

* scePthreadAttrSetaffinity implementation

* Attempt to fix Linux

* windows: Address a bunch of address space problems

* address_space: Fix unmap of region surrounded by placeholders

* libs: Reduce logging

* pthread: Implement condvar with waitable atomics and sleepqueue

* sleepq: Separate and make faster

* time: Remove delay execution

* Causes high cpu usage in Tohou Luna Nights

* kernel: Cleanup files again

* pthread: Add missing include

* semaphore: Use binary_semaphore instead of condvar

* Seems more reliable

* libraries/sysmodule: log module on `sceSysmoduleIsLoaded`

* libraries/kernel: implement `scePthreadSetPrio`

---------

Co-authored-by: squidbus <175574877+squidbus@users.noreply.github.com>
Co-authored-by: Daniel R. <47796739+polybiusproxy@users.noreply.github.com>

src/core/thread.cpp

@@ -0,0 +1,46 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "thread.h"
+
+#ifdef _WIN64
+#include <windows.h>
+#else
+#include <pthread.h>
+#endif
+
+namespace Core {
+
+Thread::Thread() : native_handle{0} {}
+
+Thread::~Thread() {}
+
+int Thread::Create(ThreadFunc func, void* arg) {
+#ifdef _WIN64
+    native_handle = CreateThread(nullptr, 0, (LPTHREAD_START_ROUTINE)func, arg, 0, nullptr);
+    return native_handle ? 0 : -1;
+#else
+    pthread_t* pthr = reinterpret_cast<pthread_t*>(&native_handle);
+    pthread_attr_t pattr;
+    pthread_attr_init(&pattr);
+    return pthread_create(pthr, &pattr, (PthreadFunc)func, arg);
+#endif
+}
+
+void Thread::Exit() {
+    if (!native_handle) {
+        return;
+    }
+
+#ifdef _WIN64
+    CloseHandle(native_handle);
+    native_handle = nullptr;
+
+    // We call this assuming the thread has finished execution.
+    ExitThread(0);
+#else
+    pthread_exit(nullptr);
+#endif
+}
+
+} // namespace Core