Core: Refactor CpuCoreManager to CpuManager and Cpu to Core Manager.

This commit instends on better naming the new purpose of this classes.

src/core/cpu_manager.cpp

@@ -0,0 +1,84 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/assert.h"
+#include "core/arm/exclusive_monitor.h"
+#include "core/core.h"
+#include "core/core_manager.h"
+#include "core/core_timing.h"
+#include "core/cpu_manager.h"
+#include "core/gdbstub/gdbstub.h"
+#include "core/settings.h"
+
+namespace Core {
+
+CpuManager::CpuManager(System& system) : system{system} {}
+CpuManager::~CpuManager() = default;
+
+void CpuManager::Initialize() {
+
+    for (std::size_t index = 0; index < core_managers.size(); ++index) {
+        core_managers[index] = std::make_unique<CoreManager>(system, index);
+    }
+}
+
+void CpuManager::Shutdown() {
+    for (auto& cpu_core : core_managers) {
+        cpu_core.reset();
+    }
+}
+
+CoreManager& CpuManager::GetCoreManager(std::size_t index) {
+    return *core_managers.at(index);
+}
+
+const CoreManager& CpuManager::GetCoreManager(std::size_t index) const {
+    return *core_managers.at(index);
+}
+
+CoreManager& CpuManager::GetCurrentCoreManager() {
+    // Otherwise, use single-threaded mode active_core variable
+    return *core_managers[active_core];
+}
+
+const CoreManager& CpuManager::GetCurrentCoreManager() const {
+    // Otherwise, use single-threaded mode active_core variable
+    return *core_managers[active_core];
+}
+
+void CpuManager::RunLoop(bool tight_loop) {
+    if (GDBStub::IsServerEnabled()) {
+        GDBStub::HandlePacket();
+
+        // If the loop is halted and we want to step, use a tiny (1) number of instructions to
+        // execute. Otherwise, get out of the loop function.
+        if (GDBStub::GetCpuHaltFlag()) {
+            if (GDBStub::GetCpuStepFlag()) {
+                tight_loop = false;
+            } else {
+                return;
+            }
+        }
+    }
+
+    auto& core_timing = system.CoreTiming();
+    core_timing.ResetRun();
+    bool keep_running{};
+    do {
+        keep_running = false;
+        for (active_core = 0; active_core < NUM_CPU_CORES; ++active_core) {
+            core_timing.SwitchContext(active_core);
+            if (core_timing.CanCurrentContextRun()) {
+                core_managers[active_core]->RunLoop(tight_loop);
+            }
+            keep_running |= core_timing.CanCurrentContextRun();
+        }
+    } while (keep_running);
+
+    if (GDBStub::IsServerEnabled()) {
+        GDBStub::SetCpuStepFlag(false);
+    }
+}
+
+} // namespace Core