我有相当简单的代码,我发现的每个例子看起来都很相似。我确定我遗漏了一些基本的东西,所以任何帮助都会非常感激。
/*-------------------------------------
State
--------------------------------------*/
void Receiver::start(int num_threads = 1) {
_kill_mtx.lock();
_kill_state = false;
_kill_mtx.unlock();
for (int i=0; i<num_threads; ++i)
threads.push_back(std::thread(thread_func)); // LINE 24
std::cout << threads.size() << " now running.\n";
std::cout << std::thread::hardware_concurrency() << " concurrent threads are supported.\n";
}
void Receiver::stop() {
}
/*-------------------------------------
Thread
--------------------------------------*/
void Receiver::thread_func() {
while(true) {
if (_kill_mtx.try_lock()) {
if (_kill_state) {
break;
}
_kill_mtx.unlock();
}
std::cout << "Still Alive!" << std::endl;
}
}
使用-std=c++0x -lstdc++ -ldbus-c++-1 -pthread
进行编译并输出错误:
communication.cpp: In member function 'void Receiver::start(int)':
| communication.cpp:24:47: error: no matching function for call to 'std::thread::thread(<unresolved
overloaded function type>, int&)'
| communication.cpp:24:47: note: candidates are:
| /home/toor/bluegiga-sdk/build/tmp/sysroots/apx4devkit/usr/include/c++/thread:133:7: note: std::th
read::thread(_Callable&&, _Args&& ...) [with _Callable = void (Receiver::*)(int), _Args = {int&}]
| /home/toor/bluegiga-sdk/build/tmp/sysroots/apx4devkit/usr/include/c++/thread:133:7: note: no kn
own conversion for argument 1 from '<unresolved overloaded function type>' to 'void (Receiver::*&&)
(int)'
GCC编译器是我正在构建的SDK提供的ARM编译器。到目前为止它已经支持了我尝试过的大多数其他C ++ 11功能,所以我不认为这是问题,但我不确定。
答案 0 :(得分:1)
我猜测Receiver::thread_func
是一个非静态成员函数,在这种情况下你需要传递隐含的第一个参数。假设您希望线程在同一实例中运行,则需要传递this
。否则,您需要将指针传递给另一个Receiver
实例:
threads.push_back(std::thread(&Receiver::thread_func, this));