45 ALLOCATED, // Memory has been allocated but not initialized
46 INITIALIZED, // The thread has been initialized but yet started
47 RUNNABLE, // Has been started and is runnable, but not necessarily running
48 MONITOR_WAIT, // Waiting on a contended monitor lock
49 CONDVAR_WAIT, // Waiting on a condition variable
50 OBJECT_WAIT, // Waiting on an Object.wait() call
51 BREAKPOINTED, // Suspended at breakpoint
52 SLEEPING, // Thread.sleep()
53 ZOMBIE // All done, but not reclaimed yet
54 };
55
56 typedef int (*OSThreadStartFunc)(void*);
57
58 class OSThread: public CHeapObj<mtThread> {
59 friend class VMStructs;
60 friend class JVMCIVMStructs;
61 private:
62 OSThreadStartFunc _start_proc; // Thread start routine
63 void* _start_parm; // Thread start routine parameter
64 volatile ThreadState _state; // Thread state *hint*
65 volatile jint _interrupted; // Thread.isInterrupted state
66
67 // Note: _interrupted must be jint, so that Java intrinsics can access it.
68 // The value stored there must be either 0 or 1. It must be possible
69 // for Java to emulate Thread.currentThread().isInterrupted() by performing
70 // the double indirection Thread::current()->_osthread->_interrupted.
71
72 // Methods
73 public:
74 void set_state(ThreadState state) { _state = state; }
75 ThreadState get_state() { return _state; }
76
77 OSThread(OSThreadStartFunc start_proc, void* start_parm);
78 ~OSThread();
79
80 // Accessors
81 OSThreadStartFunc start_proc() const { return _start_proc; }
82 void set_start_proc(OSThreadStartFunc start_proc) { _start_proc = start_proc; }
83 void* start_parm() const { return _start_parm; }
84 void set_start_parm(void* start_parm) { _start_parm = start_parm; }
85 // These are specialized on Windows.
86 #ifndef _WINDOWS
87 volatile bool interrupted() const { return _interrupted != 0; }
88 void set_interrupted(bool z) { _interrupted = z ? 1 : 0; }
89 #endif
90 // Printing
91 void print_on(outputStream* st) const;
92 void print() const;
93
94 // For java intrinsics:
95 static ByteSize interrupted_offset() { return byte_offset_of(OSThread, _interrupted); }
96
97 // Platform dependent stuff
98 #include OS_HEADER(osThread)
99
100 public:
101 static ByteSize thread_id_offset() { return byte_offset_of(OSThread, _thread_id); }
102 static size_t thread_id_size() { return sizeof(thread_id_t); }
103
104 thread_id_t thread_id() const { return _thread_id; }
105
106 void set_thread_id(thread_id_t id) { _thread_id = id; }
107
108 private:
109 // _thread_id is kernel thread id (similar to LWP id on Solaris). Each
110 // thread has a unique thread_id (BsdThreads or NPTL). It can be used
111 // to access /proc.
112 thread_id_t _thread_id;
113 };
114
115
|
45 ALLOCATED, // Memory has been allocated but not initialized
46 INITIALIZED, // The thread has been initialized but yet started
47 RUNNABLE, // Has been started and is runnable, but not necessarily running
48 MONITOR_WAIT, // Waiting on a contended monitor lock
49 CONDVAR_WAIT, // Waiting on a condition variable
50 OBJECT_WAIT, // Waiting on an Object.wait() call
51 BREAKPOINTED, // Suspended at breakpoint
52 SLEEPING, // Thread.sleep()
53 ZOMBIE // All done, but not reclaimed yet
54 };
55
56 typedef int (*OSThreadStartFunc)(void*);
57
58 class OSThread: public CHeapObj<mtThread> {
59 friend class VMStructs;
60 friend class JVMCIVMStructs;
61 private:
62 OSThreadStartFunc _start_proc; // Thread start routine
63 void* _start_parm; // Thread start routine parameter
64 volatile ThreadState _state; // Thread state *hint*
65
66 // Methods
67 public:
68 void set_state(ThreadState state) { _state = state; }
69 ThreadState get_state() { return _state; }
70
71 OSThread(OSThreadStartFunc start_proc, void* start_parm);
72 ~OSThread();
73
74 // Accessors
75 OSThreadStartFunc start_proc() const { return _start_proc; }
76 void set_start_proc(OSThreadStartFunc start_proc) { _start_proc = start_proc; }
77 void* start_parm() const { return _start_parm; }
78 void set_start_parm(void* start_parm) { _start_parm = start_parm; }
79 // This is specialized on Windows.
80 #ifndef _WINDOWS
81 void set_interrupted(bool z) { /* nothing to do */ }
82 #endif
83 // Printing
84 void print_on(outputStream* st) const;
85 void print() const;
86
87 // Platform dependent stuff
88 #include OS_HEADER(osThread)
89
90 public:
91 static ByteSize thread_id_offset() { return byte_offset_of(OSThread, _thread_id); }
92 static size_t thread_id_size() { return sizeof(thread_id_t); }
93
94 thread_id_t thread_id() const { return _thread_id; }
95
96 void set_thread_id(thread_id_t id) { _thread_id = id; }
97
98 private:
99 // _thread_id is kernel thread id (similar to LWP id on Solaris). Each
100 // thread has a unique thread_id (BsdThreads or NPTL). It can be used
101 // to access /proc.
102 thread_id_t _thread_id;
103 };
104
105
|