author | trims |
Thu, 27 May 2010 19:08:38 -0700 | |
changeset 5547 | f4b087cbb361 |
parent 1 | 489c9b5090e2 |
child 7397 | 5b173b4ca846 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1999, 2004, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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private: |
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int _thread_type; |
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public: |
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int thread_type() const { |
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return _thread_type; |
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} |
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void set_thread_type(int type) { |
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_thread_type = type; |
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} |
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private: |
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// _thread_id is kernel thread id (similar to LWP id on Solaris). Each |
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// thread has a unique thread_id (LinuxThreads or NPTL). It can be used |
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// to access /proc. |
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pid_t _thread_id; |
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// _pthread_id is the pthread id, which is used by library calls |
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// (e.g. pthread_kill). |
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pthread_t _pthread_id; |
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sigset_t _caller_sigmask; // Caller's signal mask |
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public: |
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// Methods to save/restore caller's signal mask |
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sigset_t caller_sigmask() const { return _caller_sigmask; } |
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void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; } |
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pid_t thread_id() const { |
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return _thread_id; |
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} |
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#ifndef PRODUCT |
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// Used for debugging, return a unique integer for each thread. |
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int thread_identifier() const { return _thread_id; } |
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#endif |
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#ifdef ASSERT |
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// We expect no reposition failures so kill vm if we get one. |
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// |
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bool valid_reposition_failure() { |
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return false; |
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} |
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#endif // ASSERT |
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void set_thread_id(pid_t id) { |
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_thread_id = id; |
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} |
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pthread_t pthread_id() const { |
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return _pthread_id; |
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} |
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void set_pthread_id(pthread_t tid) { |
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_pthread_id = tid; |
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} |
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// *************************************************************** |
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// suspension support. |
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// *************************************************************** |
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public: |
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// flags that support signal based suspend/resume on Linux are in a |
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// separate class to avoid confusion with many flags in OSThread that |
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// are used by VM level suspend/resume. |
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os::Linux::SuspendResume sr; |
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// _ucontext and _siginfo are used by SR_handler() to save thread context, |
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// and they will later be used to walk the stack or reposition thread PC. |
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// If the thread is not suspended in SR_handler() (e.g. self suspend), |
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// the value in _ucontext is meaningless, so we must use the last Java |
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// frame information as the frame. This will mean that for threads |
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// that are parked on a mutex the profiler (and safepoint mechanism) |
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// will see the thread as if it were still in the Java frame. This |
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// not a problem for the profiler since the Java frame is a close |
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// enough result. For the safepoint mechanism when the give it the |
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// Java frame we are not at a point where the safepoint needs the |
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// frame to that accurate (like for a compiled safepoint) since we |
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// should be in a place where we are native and will block ourselves |
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// if we transition. |
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private: |
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void* _siginfo; |
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ucontext_t* _ucontext; |
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int _expanding_stack; /* non zero if manually expanding stack */ |
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address _alt_sig_stack; /* address of base of alternate signal stack */ |
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public: |
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void* siginfo() const { return _siginfo; } |
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void set_siginfo(void* ptr) { _siginfo = ptr; } |
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ucontext_t* ucontext() const { return _ucontext; } |
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void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; } |
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void set_expanding_stack(void) { _expanding_stack = 1; } |
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void clear_expanding_stack(void) { _expanding_stack = 0; } |
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int expanding_stack(void) { return _expanding_stack; } |
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void set_alt_sig_stack(address val) { _alt_sig_stack = val; } |
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address alt_sig_stack(void) { return _alt_sig_stack; } |
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private: |
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Monitor* _startThread_lock; // sync parent and child in thread creation |
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public: |
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Monitor* startThread_lock() const { |
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return _startThread_lock; |
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} |
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// *************************************************************** |
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// Platform dependent initialization and cleanup |
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// *************************************************************** |
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private: |
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void pd_initialize(); |
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void pd_destroy(); |
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// Reconciliation History |
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// osThread_solaris.hpp 1.24 99/08/27 13:11:54 |
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// End |