--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/os/solaris/vm/os_solaris.hpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,377 @@
+/*
+ * Copyright 1997-2007 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 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_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_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 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_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_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");
+ }
+} ;