Fix marco definition

src/ProcessSemaphore_Linux.cpp

@@ -1,4 +1,5 @@
-#ifdef __linux__ /// Linux
+#if (defined(__linux__)&&!defined(_TRY_POSIX)) /// Linux platform without trying posix.
+
 #include "SemaphoreWrapper.h"
 
 #include <fcntl.h>

src/ProcessSemaphore_Posix.cpp

@@ -1,4 +1,4 @@
-#if (!defined(_WIN32)&&!defined(__linux__)) /// Not Windows or linux... Try posix.
+#ifdef _TRY_POSIX /// Try posix.
 
 #include "SemaphoreWrapper.h"
 #include <fcntl.h>
@@ -42,6 +42,7 @@ ProcessSemaphore::ProcessSemaphore(int key, int action, int default_value) : _p(
         }
         else
         {
+            /// Notice: Most platform reports "Function not implemented" on sem_open.
             dprintf("Failed to sem_open. %s\n",strerror(errno));
         }
     }
@@ -86,4 +87,4 @@ int ProcessSemaphore::notify()
     return v();
 }
 
-#endif
+#endif /// End of Try Posix

src/ProcessSemaphore_Windows.cpp

@@ -1,4 +1,4 @@
-#ifdef _WIN32
+#if (defined(_WIN32)&&!defined(_TRY_POSIX)) /// Windows platform without trying posix.
 
 #include "SemaphoreWrapper.h"
 #include <windows.h>