Gave threads default attributes for RAM gainz.

Threads for sampman and the VMU profiler were created just using
std::thread from C++11, which doesn't allow for configuration of its
stack size or label.

Wrote a small wrapper around KOS threads (and std::threads as fallback)
which takes arguments for configuring thread label, stack size, and
whether to detach it.

1) Added common/thread/thread.h/.c thread abstraction layer.
2) Updated Makefiles
3) VmuProfiler
    - averages only 10 frames now, which is avg FPS over a second
    - subclasses dc::Thread and only has a 2KB stack now
    - got a label for thread dumps
4) Sampman (liberty/miami)
    - now uses dc::Thread
    - now only needs 2KB stack size
    - got a label for thread dumps

liberty/common.mk

@@ -268,6 +268,7 @@ RE3_OBJS = \
 	../src/liberty/extras/screendroplets.o \
 	\
 	../src/common/vmu/vmu.o \
+	../src/common/thread/thread.o \
 	../vendor/miniLZO/minilzo.o \
 	\
 

miami/common.mk

@@ -284,7 +284,8 @@ RE3_OBJS = \
 	\
 	../vendor/miniLZO/minilzo.o \
 	\
-	../src/common/vmu/vmu.o
+	../src/common/vmu/vmu.o \
+	../src/common/thread/thread.o
 
 # Excluded \
 	../src/miami/extras/custompipes.o \

src/common/vmu/vmu.cpp

@@ -24,7 +24,6 @@ VmuProfiler *VmuProfiler::getInstance() {
 void VmuProfiler::destroyInstance() {
     if(instance_) {
         instance_->stopRequest_ = true;
-        instance_->join();
         instance_.reset();
     }
 }
@@ -74,12 +73,15 @@ float VmuProfiler::vertexBufferUtilization() {
 // ===== INSTANCE METHODS =====
 
 VmuProfiler::VmuProfiler():
-    std::thread(std::bind_front(&VmuProfiler::run, this))
-{}
-
-VmuProfiler::~VmuProfiler() {
-    stopRequest_ = true;
-}
+    dc::Thread("VMU Profiler",
+               1024 * 2,
+               false,
+               [](void *param) -> void* {
+                   static_cast<VmuProfiler*>(param)->run();
+                   return nullptr;
+               },
+               this)
+    {}
 
 void VmuProfiler::run() {
     while(!stopRequest_) {

src/common/vmu/vmu.h

@@ -4,6 +4,8 @@
 #include "common.h"
 #include "sampman.h"
 
+#include "thread/thread.h"
+
 #include <thread>
 #include <mutex>
 #include <shared_mutex>
@@ -40,13 +42,13 @@ public:
     ~RAIIVmuBeeper();
 };
 
-class VmuProfiler: public std::thread {
+class VmuProfiler: public dc::Thread {
 private:
     constexpr static auto         updateRate_  = std::chrono::milliseconds(100);
-    constexpr static size_t       fpsSamples   = 20;
+    constexpr static size_t       fpsSamples   = 10;
 
     static inline 
-    std::unique_ptr<VmuProfiler> instance_     = {};
+    std::unique_ptr<VmuProfiler>  instance_    = {};
     
     mutable std::shared_mutex     mtx_         = {};
     bool                          updated_     = false;
@@ -74,9 +76,6 @@ public:
     static VmuProfiler *getInstance();
     static void destroyInstance();
 
-    // Automatically signals thread to exit
-    ~VmuProfiler();
-
     // To be called every frame, so we can update FPS stats too!
     void updateVertexBufferUsage();
 };

src/liberty/audio/sampman_dc.cpp

@@ -21,6 +21,8 @@
 #include "Frontend.h"
 #include "Timer.h"
 
+#include "thread/thread.h"
+
 #include <dc/spu.h>
 #include <dc/g2bus.h>
 #include <dc/sound/aica_comm.h>
@@ -312,7 +314,8 @@ static struct {
 // 	return si->buffer;
 // }
 
-std::thread snd_thread;
+static dc::Thread snd_thread;
+
 bool8
 cSampleManager::Initialise(void)
 {
@@ -345,8 +348,8 @@ cSampleManager::Initialise(void)
 
 	if (!InitialiseSampleBanks())
 		return FALSE;
-	
-	snd_thread = std::thread([]() {
+
+	snd_thread.spawn("Audio Streamer", 1024 * 2, true, [](void*) -> void* {
 		for(;;) {
 			{
 				std::lock_guard<std::mutex> lk(channel_mtx);
@@ -446,6 +449,7 @@ cSampleManager::Initialise(void)
 			}
 			thd_sleep(50);
 		}
+		return nullptr;
 	});
 	
 	nPedSfxReqNextId = 1;

src/miami/audio/sampman_dc.cpp

@@ -9,6 +9,7 @@
 
 #include "common.h"
 #include "crossplatform.h"
+#include "thread/thread.h"
 
 #if !defined(AUDIO_OAL) &&  !defined(AUDIO_MSS)
 #define verbosef(...) // dbglog(DBG_CRITICAL, __VA_ARGS__)
@@ -318,7 +319,8 @@ static struct {
 // 	return si->buffer;
 // }
 
-std::thread snd_thread;
+static dc::Thread snd_thread;
+
 bool8
 cSampleManager::Initialise(void)
 {
@@ -351,8 +353,8 @@ cSampleManager::Initialise(void)
 
 	if (!InitialiseSampleBanks())
 		return FALSE;
-	
-	snd_thread = std::thread([]() {
+
+	snd_thread.spawn("Audio Streamer", 1024 * 2, true, [](void*) -> void* {
 		for(;;) {
 			{
 				std::lock_guard<std::mutex> lk(channel_mtx);
@@ -452,6 +454,7 @@ cSampleManager::Initialise(void)
 			}
 			thd_sleep(50);
 		}
+		return nullptr;
 	});
 	
 	nPedSfxReqNextId = 1;