no message

test/src/cpp11/CMakeLists.txt

@@ -1,11 +1,10 @@
 cmake_minimum_required(VERSION 3.12)
 project(cpp11)
-add_definitions(-std=c++11)
 
 
 set(CMAKE_BUILD_TYPE DEBUG)
-set(CMAKE_CXX_FLAGS " /MDd ")
-set(CMAKE_CXX_FLAGS_DEBUG "/DEBUG")
+set(CMAKE_CXX_FLAGS " /MTd /std:c++11 /EHsc")
+set(CMAKE_CXX_FLAGS_DEBUG "/DEBUG  /std:c++11 /EHsc")
 set(CMAKE_CXX_FLAGS_RELEASE "")
 
 

test/src/cpp11/gtest.cpp

@@ -1,7 +1,7 @@
 /*
  * @Author: your name
  * @Date: 2021-11-18 14:07:21
- * @LastEditTime: 2021-11-18 14:43:21
+ * @LastEditTime: 2021-11-26 11:27:50
  * @LastEditors: Please set LastEditors
  * @Description: <EFBFBD>枏<EFBFBD>koroFileHeader<EFBFBD>亦<EFBFBD><EFBFBD>滨蔭 餈𥡝?諹?曄蔭: https://github.com/OBKoro1/koro1FileHeader/wiki/%E9%85%8D%E7%BD%AE
  * @FilePath: \cpp11\gtest.cpp
@@ -9,6 +9,55 @@
 
 #include "gtest/gtest.h"
 
+#include <type_traits>      // std::(enable_if, result_of)
+
+void test(int) {}
+int foo() { return 0; }
+
+template<
+    class T,  class R, class... Args,
+    class T_ref = T&,
+    typename std::enable_if<
+        !std::is_void<
+            std::result_of_t<T_ref(Args...)>
+            >::value
+        >::type* = nullptr
+    >
+int test2(R& ret_param, Args... args)
+{
+    static_assert( std::is_same<
+        R,
+        std::result_of_t<T_ref(Args...)>
+        >::value, "!" );
+    T* test_call = foo;
+    ret_param = test_call(args...);
+    return 0;
+}
+
+template<
+    class T, class... Args,
+    class T_ref = T&,
+    typename std::enable_if<
+        std::is_void<
+            std::result_of_t<T_ref(Args...)>
+            >::value
+        >::type* = nullptr
+    >
+int test2(Args... args)
+{
+    T* test_call = test;
+    test_call(args...);
+    return 0;   
+}
+
+TEST(ResultOfTest,HandleZeroInput)
+{
+    test2<decltype(test)>( 1 );
+
+    int result;
+    test2<decltype(foo)>( result );
+}
+
 int Foo(int a,int b) {
     if(a==0||b==0)
     {

test/src/cpp11/thread_usage.cpp

@@ -27,8 +27,7 @@ void independentThread() {
     std::cout << "Exiting concurrent thread.\n";
 }
 
-void TestThreadDetach() 
-{
+void TestThreadDetach() {
     std::cout << "Starting thread caller.\n";
     std::thread t(independentThread);
     // t.detach();
@@ -83,14 +82,19 @@ void go(){
     gCv.notify_all(); // 唤醒所有线程.
 }
 
+void go_once(){
+    gReady = true;
+    gCv.notify_one(); // 唤醒所有线程.
+}
+
 int TestConditionVariable() {
     std::thread threads[10];
     // spawn 10 threads:
     for (int i = 0; i < 10; ++i)
         threads[i] = std::thread(do_print_id, i);
     std::cout << "10 threads ready to race...\n";
-    go();
-    
+    go_once();
+
     for (auto & th:threads)
         th.join();
     return 0;
@@ -238,28 +242,21 @@ int TestFuntionParadim() {
     return 0;
 }
 
-
 // 一个异步线程的封装
-template<typename T>
+template<class Function,class Ret,class ... Args>
 class ASyncProcess {
     public:
-    ASyncProcess(T t){
+    ASyncProcess(Function t,Ret &ret,Args... args){
         std::cout<<"ASyncProcess construct"<<std::endl;
-        mThread = new std::thread([&](){
-            this->Run();
-            this->Done(t);
+        mThread = new std::thread([t,&ret,args...](){
+            ret = t(args...);
         });
     }
     bool Finish(){
         return m_finish;
     }
-    virtual void Run() {
-        std::cout<<"ASyncProcess::Run()"<<std::endl;
-    };
-    virtual void Done(T t) {
-        std::cout<<"ASyncProcess::Done()"<<std::endl;
-    };
-    virtual ~ASyncProcess(){
+
+    virtual ~ASyncProcess() {
         mThread->detach();
     }
     private:
@@ -267,31 +264,35 @@ class ASyncProcess {
         std::thread *mThread;
 };
 
-class TestProcess : public ASyncProcess<int>{
-public:
-    TestProcess(int x )
-        :ASyncProcess<int>(x)
-    {
 
-    }
-    void Run(){
-        Sleep(5000);
-        std::cout<<"ASyncProcess\r\n";
-    }
-    void Done(int i){
-        std::cout<<"Done\r\n";
-        i = 4;
-    }
-};
 
+template<typename R, typename... Args>
+int test2(R(&f)(Args...), R& ret_param, Args... args) {
+    ret_param = f(args...);
+    return 0;   
+}
+
+template<typename... Args>
+int test2(void(&f)(Args...), Args... args)
+{
+    f(args...);
+    return 0;   
+}
+
+
+int ss(int p,int w){
+    return 1;
+}
 int main()
 {
-    TestFuntionParadim();
-    int j =111;
-    int &x = j;
-    TestProcess p1(x);
+    TestConditionVariable();
+    int result =200;
+    ASyncProcess<std::function<int(int)>,int,int>([](int p) -> int{
+        std::cout<<p;
+        return 100;
+    },result,22);
     getchar();
-    std::cout<<x<<std::endl;
+    std::cout<<result;
 
 }
 

test/src/cpp11/thread_usage.h

@@ -1,7 +1,7 @@
 /*
  * @Author: your name
  * @Date: 2021-10-09 10:03:45
- * @LastEditTime: 2021-11-25 16:43:43
+ * @LastEditTime: 2021-11-26 10:40:22
  * @LastEditors: Please set LastEditors
  * @Description: 打开koroFileHeader查看配置 进行设置: https://github.com/OBKoro1/koro1FileHeader/wiki/%E9%85%8D%E7%BD%AE
  * @FilePath: \cpp11\thread_usage.h
@@ -28,6 +28,8 @@
 #include <objbase.h>
 #include <functional>
 #include <tuple>
+#include <type_traits>
+
 
 using namespace std;