jdk8-mips64-public/hotspot: src/os/bsd/vm/osThread

src/os/bsd/vm/osThread_bsd.hpp@04ff2f6cd0eb (annotated)

src/os/bsd/vm/osThread_bsd.hpp

Tue, 17 Oct 2017 12:58:25 +0800

author: aoqi
date: Tue, 17 Oct 2017 12:58:25 +0800
changeset 7994: 04ff2f6cd0eb
parent 6876: 710a3c8b516e
permissions: -rw-r--r--

merge

 /*
  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef OS_BSD_VM_OSTHREAD_BSD_HPP
 #define OS_BSD_VM_OSTHREAD_BSD_HPP
  private:
   int _thread_type;
  public:
   int thread_type() const {
     return _thread_type;
   }
   void set_thread_type(int type) {
     _thread_type = type;
   }
  private:
 #ifdef __APPLE__
   typedef thread_t thread_id_t;
 #else
   typedef pid_t thread_id_t;
 #endif
   // _pthread_id is the pthread id, which is used by library calls
   // (e.g. pthread_kill).
   pthread_t _pthread_id;
   // This is the "thread_id" from struct thread_identifier_info. According to a
   // comment in thread_info.h, this is a "system-wide unique 64-bit thread id".
   // The value is used by SA to correlate threads.
   uint64_t _unique_thread_id;
   sigset_t _caller_sigmask; // Caller's signal mask
  public:
   // Methods to save/restore caller's signal mask
   sigset_t  caller_sigmask() const       { return _caller_sigmask; }
   void    set_caller_sigmask(sigset_t sigmask)  { _caller_sigmask = sigmask; }
 #ifndef PRODUCT
   // Used for debugging, return a unique integer for each thread.
   intptr_t thread_identifier() const   { return (intptr_t)_pthread_id; }
 #endif
 #ifdef ASSERT
   // We expect no reposition failures so kill vm if we get one.
   //
   bool valid_reposition_failure() {
     return false;
   }
 #endif // ASSERT
   pthread_t pthread_id() const {
     return _pthread_id;
   }
   void set_pthread_id(pthread_t tid) {
     _pthread_id = tid;
   }
   void set_unique_thread_id(uint64_t id) {
     _unique_thread_id = id;
   }
   // ***************************************************************
   // suspension support.
   // ***************************************************************
 public:
   // flags that support signal based suspend/resume on Bsd are in a
   // separate class to avoid confusion with many flags in OSThread that
   // are used by VM level suspend/resume.
   os::SuspendResume sr;
   // _ucontext and _siginfo are used by SR_handler() to save thread context,
   // and they will later be used to walk the stack or reposition thread PC.
   // If the thread is not suspended in SR_handler() (e.g. self suspend),
   // the value in _ucontext is meaningless, so we must use the last Java
   // frame information as the frame. This will mean that for threads
   // that are parked on a mutex the profiler (and safepoint mechanism)
   // will see the thread as if it were still in the Java frame. This
   // not a problem for the profiler since the Java frame is a close
   // enough result. For the safepoint mechanism when the give it the
   // Java frame we are not at a point where the safepoint needs the
   // frame to that accurate (like for a compiled safepoint) since we
   // should be in a place where we are native and will block ourselves
   // if we transition.
 private:
   void* _siginfo;
   ucontext_t* _ucontext;
   int _expanding_stack;                 /* non zero if manually expanding stack */
   address _alt_sig_stack;               /* address of base of alternate signal stack */
 public:
   void* siginfo() const                   { return _siginfo;  }
   void set_siginfo(void* ptr)             { _siginfo = ptr;   }
   ucontext_t* ucontext() const            { return _ucontext; }
   void set_ucontext(ucontext_t* ptr)      { _ucontext = ptr;  }
   void set_expanding_stack(void)          { _expanding_stack = 1;  }
   void clear_expanding_stack(void)        { _expanding_stack = 0;  }
   int  expanding_stack(void)              { return _expanding_stack;  }
   void set_alt_sig_stack(address val)     { _alt_sig_stack = val; }
   address alt_sig_stack(void)             { return _alt_sig_stack; }
 private:
   Monitor* _startThread_lock;     // sync parent and child in thread creation
 public:
   Monitor* startThread_lock() const {
     return _startThread_lock;
   }
   // ***************************************************************
   // Platform dependent initialization and cleanup
   // ***************************************************************
 private:
   void pd_initialize();
   void pd_destroy();
 // Reconciliation History
 // osThread_solaris.hpp 1.24 99/08/27 13:11:54
 // End
 #endif // OS_BSD_VM_OSTHREAD_BSD_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/os/bsd/vm/osThread_bsd.hpp@04ff2f6cd0eb (annotated)

src/os/bsd/vm/osThread_bsd.hpp