--- /dev/null Wed Sep 14 12:50:21 2011 +++ new/src/os/bsd/vm/osThread_bsd.hpp Wed Sep 14 12:50:45 2011 @@ -0,0 +1,165 @@ +/* + * Copyright (c) 1999, 2010, 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 _ALLBSD_SOURCE + // _thread_id and _pthread_id are the same on BSD + // keep both to minimize code divergence in os_bsd.cpp + pthread_t _thread_id; + pthread_t _pthread_id; +#else + // _thread_id is kernel thread id (similar to LWP id on Solaris). Each + // thread has a unique thread_id (BsdThreads or NPTL). It can be used + // to access /proc. + pid_t _thread_id; + + // _pthread_id is the pthread id, which is used by library calls + // (e.g. pthread_kill). + pthread_t _pthread_id; +#endif + + 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; } + +#ifdef _ALLBSD_SOURCE + pthread_t thread_id() const { + return _thread_id; + } +#else + pid_t thread_id() const { + return _thread_id; + } +#endif +#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 +#ifdef _ALLBSD_SOURCE + void set_thread_id(pthread_t id) { + _thread_id = id; + } +#else + void set_thread_id(pid_t id) { + _thread_id = id; + } +#endif + pthread_t pthread_id() const { + return _pthread_id; + } + void set_pthread_id(pthread_t tid) { + _pthread_id = tid; + } + + // *************************************************************** + // 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::Bsd::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