对boost的多线程感觉挺好奇的,所以就追踪了以下。
设置在 < \boost\thread\win32\thread_primitives.hpp > 下面,为了调用windows api,boost是这么做的
# include <windows.h>
namespace boost
{
namespace detail
{
namespace win32
{
typedef ULONG_PTR ulong_ptr;
typedef HANDLE handle;
unsigned const infinite=INFINITE;
unsigned const timeout=WAIT_TIMEOUT;
handle const invalid_handle_value=INVALID_HANDLE_VALUE;
unsigned const event_modify_state=EVENT_MODIFY_STATE;
unsigned const synchronize=SYNCHRONIZE;
# ifdef BOOST_NO_ANSI_APIS
using ::CreateMutexW;
using ::CreateEventW;
using ::OpenEventW;
using ::CreateSemaphoreW;
# else
using ::CreateMutexA;
using ::CreateEventA;
using ::OpenEventA;
using ::CreateSemaphoreA;
# endif
using ::CloseHandle;
using ::ReleaseMutex;
using ::ReleaseSemaphore;
using ::SetEvent;
using ::ResetEvent;
using ::WaitForMultipleObjects;
using ::WaitForSingleObject;
using ::GetCurrentProcessId;
using ::GetCurrentThreadId;
using ::GetCurrentThread;
using ::GetCurrentProcess;
using ::DuplicateHandle;
using ::SleepEx;
using ::Sleep;
using ::QueueUserAPC;
using ::GetTickCount;
}
}
}
这样做的好处,就是其他头文件用到windows.h,就只需要包含这个头文件了,而且用到什么api函数都列出来了,更清晰吧,后面就是把其中几个函数适配了一下。有些是全局函数来适配的,当然要放命名空间的。还有些用类包装起来了。我看到basic_timed_mutex,其他不清楚,没有总结下去了。
下面几个宏定义:\boost_1_47_0\boost\detail\interlocked.hpp
# include <windows.h>
# define BOOST_INTERLOCKED_INCREMENT InterlockedIncrement
# define BOOST_INTERLOCKED_DECREMENT InterlockedDecrement
# define BOOST_INTERLOCKED_COMPARE_EXCHANGE InterlockedCompareExchange
# define BOOST_INTERLOCKED_EXCHANGE InterlockedExchange
# define BOOST_INTERLOCKED_EXCHANGE_ADD InterlockedExchangeAdd
# define BOOST_INTERLOCKED_COMPARE_EXCHANGE_POINTER InterlockedCompareExchangePointer
# define BOOST_INTERLOCKED_EXCHANGE_POINTER InterlockedExchangePointer
下面我打算试试看boost的多线程库,是不是方便很多。