Qt/Core: implement max llvm compile threads

rpcs3/Emu/Cell/PPUThread.cpp

@@ -1161,7 +1161,9 @@ extern void ppu_initialize(const ppu_module& info)
 	static semaphore<> jmutex;
 
 	// Initialize semaphore with the max number of threads
-	semaphore<INT32_MAX> jcores(std::thread::hardware_concurrency());
+	u32 max_threads = static_cast<u32>(g_cfg.core.llvm_threads);
+	s32 thread_count = max_threads > 0 ? std::min(max_threads, std::thread::hardware_concurrency()) : std::thread::hardware_concurrency();
+	semaphore<INT32_MAX> jcores(thread_count);
 
 	if (!jcores.get())
 	{

rpcs3/Emu/System.h

@@ -285,6 +285,7 @@ struct cfg_root : cfg::node
 		cfg::_bool ppu_debug{this, "PPU Debug"};
 		cfg::_bool llvm_logs{this, "Save LLVM logs"};
 		cfg::string llvm_cpu{this, "Use LLVM CPU"};
+		cfg::_int<0, INT32_MAX> llvm_threads{this, "Max LLVM Compile Threads", 0};
 
 #ifdef _WIN32
 		cfg::_bool thread_scheduler_enabled{ this, "Enable thread scheduler", true };

rpcs3/Json/tooltips.json

@@ -64,6 +64,7 @@
 			"gs_resizeOnBoot": "Automatically resizes the game window on boot.\nThis does not change the internal game resolution.",
 			"showTrophyPopups": "Show trophy popups when a trophy is unlocked.",
 			"gs_disableMouse": "Disables the activation of fullscreen mode per doubleclick while the game screen is active.\nCheck this if you want to play with mouse and keyboard (for example with UCR).",
+			"maxLLVMThreads": "Limits the maximum number of threads used for PPU Module compilation.\nLower this in order to increase performance of other open applications.\nThe default uses all available threads.",
 			"useNativeInterface": "Enables use of native HUD within the game window that can interacts with the game controllers.\nWhen disabled, regular Qt dialogs are used instead.\nNot all languages are currently supported (English only)"
 		}
 	},

rpcs3/rpcs3qt/emu_settings.cpp

@@ -222,13 +222,15 @@ void emu_settings::SaveSettings()
 	m_config.write(out.c_str(), out.size());
 }
 
-void emu_settings::EnhanceComboBox(QComboBox* combobox, SettingsType type, bool is_ranged)
+void emu_settings::EnhanceComboBox(QComboBox* combobox, SettingsType type, bool is_ranged, bool use_max, int max)
 {
 	if (is_ranged)
 	{
 		QStringList range = GetSettingOptions(type);
 
-		for (int i = range.first().toInt(); i <= range.last().toInt(); i++)
+		int max_item = use_max ? max : range.last().toInt();
+
+		for (int i = range.first().toInt(); i <= max_item; i++)
 		{
 			combobox->addItem(QString::number(i), QVariant(QString::number(i)));
 		}

rpcs3/rpcs3qt/emu_settings.h

@@ -36,6 +36,7 @@ public:
 		PreferredSPUThreads,
 		PPUDebug,
 		SPUDebug,
+		MaxLLVMThreads,
 
 		// Graphics
 		Renderer,
@@ -143,7 +144,7 @@ public:
 	~emu_settings();
 
 	/** Connects a combo box with the target settings type*/
-	void EnhanceComboBox(QComboBox* combobox, SettingsType type, bool is_ranged = false);
+	void EnhanceComboBox(QComboBox* combobox, SettingsType type, bool is_ranged = false, bool use_max = false, int max = 0);
 
 	/** Connects a check box with the target settings type*/
 	void EnhanceCheckBox(QCheckBox* checkbox, SettingsType type);
@@ -193,6 +194,7 @@ private:
 		{ PreferredSPUThreads,      { "Core", "Preferred SPU Threads"}},
 		{ PPUDebug,                 { "Core", "PPU Debug"}},
 		{ SPUDebug,                 { "Core", "SPU Debug"}},
+		{ MaxLLVMThreads,           { "Core", "Max LLVM Compile Threads"}},
 
 		// Graphics Tab
 		{ Renderer,                 { "Video", "Renderer"}},

rpcs3/rpcs3qt/settings_dialog.cpp

@@ -22,6 +22,7 @@
 #include "Crypto/unself.h"
 
 #include <unordered_set>
+#include <thread>
 
 inline std::string sstr(const QString& _in) { return _in.toStdString(); }
 inline std::string sstr(const QVariant& _in) { return sstr(_in.toString()); }
@@ -692,6 +693,10 @@ settings_dialog::settings_dialog(std::shared_ptr<gui_settings> guiSettings, std:
 
 	// Comboboxes
 
+	xemu_settings->EnhanceComboBox(ui->maxLLVMThreads, emu_settings::MaxLLVMThreads, true, true, std::thread::hardware_concurrency());
+	SubscribeTooltip(ui->maxLLVMThreads, json_emu_misc["maxLLVMThreads"].toString());
+	ui->maxLLVMThreads->setItemText(ui->maxLLVMThreads->findData("0"), tr("All (%1)").arg(std::thread::hardware_concurrency()));
+
 	SubscribeTooltip(ui->combo_configs, json_emu_gui["configs"].toString());
 
 	SubscribeTooltip(ui->combo_stylesheets, json_emu_gui["stylesheets"].toString());
@@ -727,7 +732,6 @@ settings_dialog::settings_dialog(std::shared_ptr<gui_settings> guiSettings, std:
 	if (game)
 	{
 		ui->gb_stylesheets->setEnabled(false);
-		ui->gb_configs->setEnabled(false);
 		ui->gb_settings->setEnabled(false);
 		ui->gb_colors->setEnabled(false);
 		ui->gb_viewport->setEnabled(false);

rpcs3/rpcs3qt/settings_dialog.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>787</width>
-    <height>566</height>
+    <width>1011</width>
+    <height>775</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -1377,20 +1377,13 @@
          <item>
           <layout class="QVBoxLayout" name="verticalLayout_58">
            <item>
-            <widget class="QGroupBox" name="gb_configs">
+            <widget class="QGroupBox" name="groupBox_2">
              <property name="title">
-              <string>UI Configurations</string>
+              <string>Max LLVM Compile Threads</string>
              </property>
-             <layout class="QVBoxLayout" name="verticalLayout_44">
+             <layout class="QVBoxLayout" name="verticalLayout_63">
               <item>
-               <widget class="QComboBox" name="combo_configs"/>
-              </item>
-              <item>
-               <widget class="QPushButton" name="pb_apply_config">
-                <property name="text">
-                 <string>Apply</string>
-                </property>
-               </widget>
+               <widget class="QComboBox" name="maxLLVMThreads"/>
               </item>
              </layout>
             </widget>
@@ -1439,12 +1432,22 @@
                 </property>
                 <property name="sizeHint" stdset="0">
                  <size>
-                  <width>0</width>
+                  <width>20</width>
                   <height>0</height>
                  </size>
                 </property>
                </spacer>
               </item>
+              <item>
+               <widget class="QComboBox" name="combo_configs"/>
+              </item>
+              <item>
+               <widget class="QPushButton" name="pb_apply_config">
+                <property name="text">
+                 <string>Apply</string>
+                </property>
+               </widget>
+              </item>
              </layout>
             </widget>
            </item>