PIThreadPoolExecutor & PIBlockingDequeue improvements

- add support move & copy semantic
- introduce submit method for executor with future result

tests/concurrent/MutexIntegrationTest.cpp

@@ -3,12 +3,12 @@
 #include "pithread.h"
 #include "testutil.h"
 
-class Mutex : public ::testing::Test, public TestUtil {
+class MutexIntegartionTest : public ::testing::Test, public TestUtil {
 public:
 	PIMutex* m = new PIMutex();
 };
 
-TEST_F(Mutex, lock_is_protect) {
+TEST_F(MutexIntegartionTest, lock_is_protect) {
     m->lock();
     bool* isProtect = new bool(true);
 
@@ -20,7 +20,7 @@ TEST_F(Mutex, lock_is_protect) {
     ASSERT_TRUE(*isProtect);
 }
 
-TEST_F(Mutex, unlock_is_release) {
+TEST_F(MutexIntegartionTest, unlock_is_release) {
     m->lock();
     bool* isReleased = new bool(false);
     m->unlock();
@@ -33,7 +33,7 @@ TEST_F(Mutex, unlock_is_release) {
     ASSERT_TRUE(*isReleased);
 }
 
-TEST_F(Mutex, tryLock_is_false_when_locked) {
+TEST_F(MutexIntegartionTest, tryLock_is_false_when_locked) {
     createThread([&](){
         m->lock();
         piMSleep(WAIT_THREAD_TIME_MS);
@@ -41,11 +41,11 @@ TEST_F(Mutex, tryLock_is_false_when_locked) {
     ASSERT_FALSE(m->tryLock());
 }
 
-TEST_F(Mutex, tryLock_is_true_when_unlocked) {
+TEST_F(MutexIntegartionTest, tryLock_is_true_when_unlocked) {
     ASSERT_TRUE(m->tryLock());
 }
 
-TEST_F(Mutex, tryLock_is_recursive_lock_enable) {
+TEST_F(MutexIntegartionTest, tryLock_is_recursive_lock_enable) {
     m->lock();
     ASSERT_TRUE(m->tryLock());
 }