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24 
25 #ifndef OS_BSD_VM_OSTHREAD_BSD_HPP
26 #define OS_BSD_VM_OSTHREAD_BSD_HPP
27 
28  private:
29   int _thread_type;
30 
31  public:
32 
33   int thread_type() const {
34     return _thread_type;
35   }
set_thread_type(int type)36   void set_thread_type(int type) {
37     _thread_type = type;
38   }
39 
40  private:
41 
42 #ifdef __APPLE__
43   typedef thread_t thread_id_t;
44 #else
45   typedef pid_t thread_id_t;
46 #endif
47 
48   // _pthread_id is the pthread id, which is used by library calls
49   // (e.g. pthread_kill).
50   pthread_t _pthread_id;
51 
52   // This is the "thread_id" from struct thread_identifier_info. According to a
53   // comment in thread_info.h, this is a "system-wide unique 64-bit thread id".
54   // The value is used by SA to correlate threads.
55   uint64_t _unique_thread_id;
56 
57   sigset_t _caller_sigmask; // Caller's signal mask
58 
59  public:
60 
61   // Methods to save/restore caller's signal mask
62   sigset_t  caller_sigmask() const       { return _caller_sigmask; }
set_caller_sigmask(sigset_t sigmask)63   void    set_caller_sigmask(sigset_t sigmask)  { _caller_sigmask = sigmask; }
64 
65 #ifndef PRODUCT
66   // Used for debugging, return a unique integer for each thread.
thread_identifier() const67   intptr_t thread_identifier() const   { return (intptr_t)_pthread_id; }
68 #endif
69 
70 #ifdef ASSERT
71   // We expect no reposition failures so kill vm if we get one.
72   //
valid_reposition_failure()73   bool valid_reposition_failure() {
74     return false;
75   }
76 #endif // ASSERT
77 
pthread_id() const78   pthread_t pthread_id() const {
79     return _pthread_id;
80   }
set_pthread_id(pthread_t tid)81   void set_pthread_id(pthread_t tid) {
82     _pthread_id = tid;
83   }
84 
set_unique_thread_id(uint64_t id)85   void set_unique_thread_id(uint64_t id) {
86     _unique_thread_id = id;
87   }
88 
89   // ***************************************************************
90   // suspension support.
91   // ***************************************************************
92 
93 public:
94   // flags that support signal based suspend/resume on Bsd are in a
95   // separate class to avoid confusion with many flags in OSThread that
96   // are used by VM level suspend/resume.
97   os::SuspendResume sr;
98 
99   // _ucontext and _siginfo are used by SR_handler() to save thread context,
100   // and they will later be used to walk the stack or reposition thread PC.
101   // If the thread is not suspended in SR_handler() (e.g. self suspend),
102   // the value in _ucontext is meaningless, so we must use the last Java
103   // frame information as the frame. This will mean that for threads
104   // that are parked on a mutex the profiler (and safepoint mechanism)
105   // will see the thread as if it were still in the Java frame. This
106   // not a problem for the profiler since the Java frame is a close
107   // enough result. For the safepoint mechanism when the give it the
108   // Java frame we are not at a point where the safepoint needs the
109   // frame to that accurate (like for a compiled safepoint) since we
110   // should be in a place where we are native and will block ourselves
111   // if we transition.
112 private:
113   void* _siginfo;
114   ucontext_t* _ucontext;
115   int _expanding_stack;                 /* non zero if manually expanding stack */
116   address _alt_sig_stack;               /* address of base of alternate signal stack */
117 
118 public:
119   void* siginfo() const                   { return _siginfo;  }
set_siginfo(void * ptr)120   void set_siginfo(void* ptr)             { _siginfo = ptr;   }
ucontext() const121   ucontext_t* ucontext() const            { return _ucontext; }
set_ucontext(ucontext_t * ptr)122   void set_ucontext(ucontext_t* ptr)      { _ucontext = ptr;  }
set_expanding_stack(void)123   void set_expanding_stack(void)          { _expanding_stack = 1;  }
clear_expanding_stack(void)124   void clear_expanding_stack(void)        { _expanding_stack = 0;  }
expanding_stack(void)125   int  expanding_stack(void)              { return _expanding_stack;  }
126 
set_alt_sig_stack(address val)127   void set_alt_sig_stack(address val)     { _alt_sig_stack = val; }
alt_sig_stack(void)128   address alt_sig_stack(void)             { return _alt_sig_stack; }
129 
130 private:
131   Monitor* _startThread_lock;     // sync parent and child in thread creation
132 
133 public:
134 
135   Monitor* startThread_lock() const {
136     return _startThread_lock;
137   }
138 
139   // ***************************************************************
140   // Platform dependent initialization and cleanup
141   // ***************************************************************
142 
143 private:
144 
145   void pd_initialize();
146   void pd_destroy();
147 
148 // Reconciliation History
149 // osThread_solaris.hpp 1.24 99/08/27 13:11:54
150 // End
151 
152 #endif // OS_BSD_VM_OSTHREAD_BSD_HPP
153