nonlib/Thread: Separate running() logic from thread descriptor.

nonlib/Thread.C

@@ -30,12 +30,14 @@ pthread_key_t Thread::_current = 0;
 Thread::Thread ( )
 {
     _thread = 0;
+    _running = false;
     _name = 0;
 }
 
 Thread::Thread ( const char *name )
 {
     _thread = 0;
+    _running = false;
     _name = name;
 }
 
@@ -57,6 +59,7 @@ Thread::set ( const char *name )
 {
     _thread = pthread_self();
     _name = name;
+    _running = true;
 
     pthread_setspecific( _current, (void*)this );
 }
@@ -83,6 +86,8 @@ Thread::run_thread ( void *arg )
 
     pthread_setspecific( _current, td.t );
 
+    ((Thread*)td.t)->_running = true;
+
     return td.entry_point( td.arg );
 }
 
@@ -130,5 +135,6 @@ Thread::join ( void )
 void
 Thread::exit ( void *retval )
 {
+    _running = false;
     pthread_exit( retval );
 }

nonlib/Thread.H

@@ -31,6 +31,8 @@ class Thread
     pthread_t _thread;
     const char * _name;
 
+    volatile bool _running;
+
     static void * run_thread ( void *arg );
 
 public:
@@ -46,7 +48,7 @@ public:
     const char *name ( void ) const { return _name; }
     void name ( const char *name ) { _name = name; }
 
-    bool running ( void ) const { return _thread; }
+    bool running ( void ) const { return _running; }
     void set ( const char *name );
     void set ( void ) { set( _name ); }
     bool clone ( void *(*entry_point)(void *), void *arg );