36
37 // The thread states represented by the ThreadState values are platform-specific
38 // and are likely to be only approximate, because most OSes don't give you access
39 // to precise thread state information.
40
41 // Note: the ThreadState is legacy code and is not correctly implemented.
42 // Uses of ThreadState need to be replaced by the state in the JavaThread.
43
44 enum ThreadState {
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 // I'd make OSThread a ValueObj embedded in Thread to avoid an indirection, but
57 // the assembler test in java.cpp expects that it can install the OSThread of
58 // the main thread into its own Thread at will.
59
60
61 class OSThread: public CHeapObj<mtThread> {
62 friend class VMStructs;
63 friend class JVMCIVMStructs;
64 private:
65 OSThreadStartFunc _start_proc; // Thread start routine
66 void* _start_parm; // Thread start routine parameter
67 volatile ThreadState _state; // Thread state *hint*
68 volatile jint _interrupted; // Thread.isInterrupted state
69
70 // Note: _interrupted must be jint, so that Java intrinsics can access it.
71 // The value stored there must be either 0 or 1. It must be possible
72 // for Java to emulate Thread.currentThread().isInterrupted() by performing
73 // the double indirection Thread::current()->_osthread->_interrupted.
74
75 // Methods
76 public:
77 void set_state(ThreadState state) { _state = state; }
78 ThreadState get_state() { return _state; }
79
80 OSThread(OSThreadStartFunc start_proc, void* start_parm);
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36
37 // The thread states represented by the ThreadState values are platform-specific
38 // and are likely to be only approximate, because most OSes don't give you access
39 // to precise thread state information.
40
41 // Note: the ThreadState is legacy code and is not correctly implemented.
42 // Uses of ThreadState need to be replaced by the state in the JavaThread.
43
44 enum ThreadState {
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 class OSThread: public CHeapObj<mtThread> {
57 friend class VMStructs;
58 friend class JVMCIVMStructs;
59 private:
60 OSThreadStartFunc _start_proc; // Thread start routine
61 void* _start_parm; // Thread start routine parameter
62 volatile ThreadState _state; // Thread state *hint*
63 volatile jint _interrupted; // Thread.isInterrupted state
64
65 // Note: _interrupted must be jint, so that Java intrinsics can access it.
66 // The value stored there must be either 0 or 1. It must be possible
67 // for Java to emulate Thread.currentThread().isInterrupted() by performing
68 // the double indirection Thread::current()->_osthread->_interrupted.
69
70 // Methods
71 public:
72 void set_state(ThreadState state) { _state = state; }
73 ThreadState get_state() { return _state; }
74
75 OSThread(OSThreadStartFunc start_proc, void* start_parm);
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