/* * Copyright 1997-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // Solaris_OS defines the interface to Solaris operating systems class Solaris { friend class os; private: // Support for "new" libthread APIs for getting & setting thread context (2.8) #define TRS_VALID 0 #define TRS_NONVOLATILE 1 #define TRS_LWPID 2 #define TRS_INVALID 3 // _T2_libthread is true if we believe we are running with the newer // SunSoft lib/lwp/libthread: default Solaris 9, available Solaris 8 // which is a lightweight libthread that also supports all T1 static bool _T2_libthread; // These refer to new libthread interface functions // They get intialized if we dynamically detect new libthread static int_fnP_thread_t_iP_uP_stack_tP_gregset_t _thr_getstate; static int_fnP_thread_t_i_gregset_t _thr_setstate; static int_fnP_thread_t_i _thr_setmutator; static int_fnP_thread_t _thr_suspend_mutator; static int_fnP_thread_t _thr_continue_mutator; // libthread_init sets the above, if the new functionality is detected // initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization static int_fnP_mutex_tP _mutex_lock; static int_fnP_mutex_tP _mutex_trylock; static int_fnP_mutex_tP _mutex_unlock; static int_fnP_mutex_tP_i_vP _mutex_init; static int_fnP_mutex_tP _mutex_destroy; static int _mutex_scope; static int_fnP_cond_tP_mutex_tP_timestruc_tP _cond_timedwait; static int_fnP_cond_tP_mutex_tP _cond_wait; static int_fnP_cond_tP _cond_signal; static int_fnP_cond_tP _cond_broadcast; static int_fnP_cond_tP_i_vP _cond_init; static int_fnP_cond_tP _cond_destroy; static int _cond_scope; typedef uintptr_t lgrp_cookie_t; typedef id_t lgrp_id_t; typedef int lgrp_rsrc_t; typedef enum lgrp_view { LGRP_VIEW_CALLER, /* what's available to the caller */ LGRP_VIEW_OS /* what's available to operating system */ } lgrp_view_t; typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id); typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view); typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie); typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie); typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent, lgrp_id_t *lgrp_array, uint_t lgrp_array_size); typedef int (*lgrp_resources_func_t)(lgrp_cookie_t cookie, lgrp_id_t lgrp, lgrp_id_t *lgrp_array, uint_t lgrp_array_size, lgrp_rsrc_t type); typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie); typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie); typedef int (*meminfo_func_t)(const uint64_t inaddr[], int addr_count, const uint_t info_req[], int info_count, uint64_t outdata[], uint_t validity[]); static lgrp_home_func_t _lgrp_home; static lgrp_init_func_t _lgrp_init; static lgrp_fini_func_t _lgrp_fini; static lgrp_root_func_t _lgrp_root; static lgrp_children_func_t _lgrp_children; static lgrp_resources_func_t _lgrp_resources; static lgrp_nlgrps_func_t _lgrp_nlgrps; static lgrp_cookie_stale_func_t _lgrp_cookie_stale; static lgrp_cookie_t _lgrp_cookie; static meminfo_func_t _meminfo; // Large Page Support--mpss. static bool set_mpss_range(caddr_t start, size_t bytes, size_t align); static void init_thread_fpu_state(void); static void try_enable_extended_io(); // For signal-chaining static unsigned long sigs; // mask of signals that have // preinstalled signal handlers static struct sigaction *(*get_signal_action)(int); static struct sigaction *get_preinstalled_handler(int); static int (*get_libjsig_version)(); static void save_preinstalled_handler(int, struct sigaction&); static void check_signal_handler(int sig); // For overridable signals static int _SIGinterrupt; // user-overridable INTERRUPT_SIGNAL static int _SIGasync; // user-overridable ASYNC_SIGNAL static void set_SIGinterrupt(int newsig) { _SIGinterrupt = newsig; } static void set_SIGasync(int newsig) { _SIGasync = newsig; } public: // Large Page Support--ISM. static bool largepage_range(char* addr, size_t size); static int SIGinterrupt() { return _SIGinterrupt; } static int SIGasync() { return _SIGasync; } static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo static bool valid_stack_address(Thread* thread, address sp); static bool valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect); static ucontext_t* get_valid_uc_in_signal_handler(Thread* thread, ucontext_t* uc); static ExtendedPC ucontext_get_ExtendedPC(ucontext_t* uc); static intptr_t* ucontext_get_sp(ucontext_t* uc); // ucontext_get_fp() is only used by Solaris X86 (see note below) static intptr_t* ucontext_get_fp(ucontext_t* uc); // For Analyzer Forte AsyncGetCallTrace profiling support: // Parameter ret_fp is only used by Solaris X86. // // We should have different declarations of this interface in // os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file // provides extensions to the os class and not the Solaris class. static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc, intptr_t** ret_sp, intptr_t** ret_fp); static void hotspot_sigmask(Thread* thread); protected: // Solaris-specific interface goes here static julong available_memory(); static julong physical_memory() { return _physical_memory; } static julong _physical_memory; static void initialize_system_info(); static int _dev_zero_fd; static int get_dev_zero_fd() { return _dev_zero_fd; } static void set_dev_zero_fd(int fd) { _dev_zero_fd = fd; } static char* mmap_chunk(char *addr, size_t size, int flags, int prot); static char* anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed); static bool mpss_sanity_check(bool warn, size_t * page_size); static bool ism_sanity_check (bool warn, size_t * page_size); // Workaround for 4352906. thr_stksegment sometimes returns // a bad value for the primordial thread's stack base when // it is called more than one time. // Workaround is to cache the initial value to avoid further // calls to thr_stksegment. // It appears that someone (Hotspot?) is trashing the user's // proc_t structure (note that this is a system struct). static address _main_stack_base; public: static void libthread_init(); static void synchronization_init(); static void liblgrp_init(); // Load miscellaneous symbols. static void misc_sym_init(); // This boolean allows users to forward their own non-matching signals // to JVM_handle_solaris_signal, harmlessly. static bool signal_handlers_are_installed; static void signal_sets_init(); static void install_signal_handlers(); static void set_signal_handler(int sig, bool set_installed, bool oktochain); static void init_signal_mem(); static bool is_sig_ignored(int sig); static void set_our_sigflags(int, int); static int get_our_sigflags(int); // For signal-chaining static bool libjsig_is_loaded; // libjsig that interposes sigaction(), // signal(), sigset() is loaded static struct sigaction *get_chained_signal_action(int sig); static bool chained_handler(int sig, siginfo_t *siginfo, void *context); // The following allow us to link against both the old and new libthread (2.8) // and exploit the new libthread functionality if available. static bool T2_libthread() { return _T2_libthread; } static void set_T2_libthread(bool T2_libthread) { _T2_libthread = T2_libthread; } static int thr_getstate(thread_t tid, int *flag, unsigned *lwp, stack_t *ss, gregset_t rs) { return _thr_getstate(tid, flag, lwp, ss, rs); } static void set_thr_getstate(int_fnP_thread_t_iP_uP_stack_tP_gregset_t func) { _thr_getstate = func; } static int thr_setstate(thread_t tid, int flag, gregset_t rs) { return _thr_setstate(tid, flag, rs); } static void set_thr_setstate(int_fnP_thread_t_i_gregset_t func) { _thr_setstate = func; } static int thr_setmutator(thread_t tid, int enabled) { return _thr_setmutator(tid, enabled); } static void set_thr_setmutator(int_fnP_thread_t_i func) { _thr_setmutator = func; } static int thr_suspend_mutator(thread_t tid) { return _thr_suspend_mutator(tid); } static void set_thr_suspend_mutator(int_fnP_thread_t func) { _thr_suspend_mutator = func; } static int thr_continue_mutator(thread_t tid) { return _thr_continue_mutator(tid); } static void set_thr_continue_mutator(int_fnP_thread_t func) { _thr_continue_mutator = func; } // Allows us to switch between lwp and thread -based synchronization static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); } static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); } static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); } static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); } static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); } static int mutex_scope() { return _mutex_scope; } static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; } static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; } static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; } static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; } static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; } static void set_mutex_scope(int scope) { _mutex_scope = scope; } static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst) { return _cond_timedwait(cv, mx, abst); } static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); } static int cond_signal(cond_t *cv) { return _cond_signal(cv); } static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); } static int cond_init(cond_t *cv) { return _cond_init(cv, os::Solaris::cond_scope(), NULL); } static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); } static int cond_scope() { return _cond_scope; } static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func) { _cond_timedwait = func; } static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; } static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; } static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; } static void set_cond_init(int_fnP_cond_tP_i_vP func) { _cond_init = func; } static void set_cond_destroy(int_fnP_cond_tP func) { _cond_destroy = func; } static void set_cond_scope(int scope) { _cond_scope = scope; } static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; } static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; } static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; } static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; } static void set_lgrp_children(lgrp_children_func_t func) { _lgrp_children = func; } static void set_lgrp_resources(lgrp_resources_func_t func) { _lgrp_resources = func; } static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func) { _lgrp_nlgrps = func; } static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; } static void set_lgrp_cookie(lgrp_cookie_t cookie) { _lgrp_cookie = cookie; } static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; } static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; } static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; } static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; }; static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent, lgrp_id_t *lgrp_array, uint_t lgrp_array_size) { return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1; } static int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp, lgrp_id_t *lgrp_array, uint_t lgrp_array_size, lgrp_rsrc_t type) { return _lgrp_resources != NULL ? _lgrp_resources(cookie, lgrp, lgrp_array, lgrp_array_size, type) : -1; } static int lgrp_nlgrps(lgrp_cookie_t cookie) { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; } static int lgrp_cookie_stale(lgrp_cookie_t cookie) { return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1; } static lgrp_cookie_t lgrp_cookie() { return _lgrp_cookie; } static void set_meminfo(meminfo_func_t func) { _meminfo = func; } static int meminfo (const uint64_t inaddr[], int addr_count, const uint_t info_req[], int info_count, uint64_t outdata[], uint_t validity[]) { return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count, outdata, validity) : -1; } enum { clear_interrupted = true }; static void setup_interruptible(JavaThread* thread); static void setup_interruptible_already_blocked(JavaThread* thread); static JavaThread* setup_interruptible(); static void cleanup_interruptible(JavaThread* thread); // perf counter incrementers used by _INTERRUPTIBLE static void bump_interrupted_before_count(); static void bump_interrupted_during_count(); #ifdef ASSERT static JavaThread* setup_interruptible_native(); static void cleanup_interruptible_native(JavaThread* thread); #endif static sigset_t* unblocked_signals(); static sigset_t* vm_signals(); static sigset_t* allowdebug_blocked_signals(); // %%% Following should be promoted to os.hpp: // Trace number of created threads static jint _os_thread_limit; static volatile jint _os_thread_count; // Minimum stack size a thread can be created with (allowing // the VM to completely create the thread and enter user code) static size_t min_stack_allowed; // Stack overflow handling static int max_register_window_saves_before_flushing(); // Stack repair handling // none present }; class PlatformEvent : public CHeapObj { private: double CachePad [4] ; // increase odds that _mutex is sole occupant of cache line volatile int _Event ; int _nParked ; int _pipev [2] ; mutex_t _mutex [1] ; cond_t _cond [1] ; double PostPad [2] ; protected: // Defining a protected ctor effectively gives us an abstract base class. // That is, a PlatformEvent can never be instantiated "naked" but only // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent). // TODO-FIXME: make dtor private ~PlatformEvent() { guarantee (0, "invariant") ; } PlatformEvent() { int status; status = os::Solaris::cond_init(_cond); assert_status(status == 0, status, "cond_init"); status = os::Solaris::mutex_init(_mutex); assert_status(status == 0, status, "mutex_init"); _Event = 0 ; _nParked = 0 ; _pipev[0] = _pipev[1] = -1 ; } public: // Exercise caution using reset() and fired() -- they may require MEMBARs void reset() { _Event = 0 ; } int fired() { return _Event; } void park () ; int park (jlong millis) ; int TryPark () ; void unpark () ; } ; class PlatformParker : public CHeapObj { protected: mutex_t _mutex [1] ; cond_t _cond [1] ; public: // TODO-FIXME: make dtor private ~PlatformParker() { guarantee (0, "invariant") ; } public: PlatformParker() { int status; status = os::Solaris::cond_init(_cond); assert_status(status == 0, status, "cond_init"); status = os::Solaris::mutex_init(_mutex); assert_status(status == 0, status, "mutex_init"); } } ;