1 /* 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef OS_SOLARIS_VM_OS_SOLARIS_HPP 26 #define OS_SOLARIS_VM_OS_SOLARIS_HPP 27 28 // Solaris_OS defines the interface to Solaris operating systems 29 30 class Solaris { 31 friend class os; 32 33 private: 34 35 // Support for "new" libthread APIs for getting & setting thread context (2.8) 36 #define TRS_VALID 0 37 #define TRS_NONVOLATILE 1 38 #define TRS_LWPID 2 39 #define TRS_INVALID 3 40 41 // _T2_libthread is true if we believe we are running with the newer 42 // SunSoft lib/lwp/libthread: default Solaris 9, available Solaris 8 43 // which is a lightweight libthread that also supports all T1 44 static bool _T2_libthread; 45 // These refer to new libthread interface functions 46 // They get intialized if we dynamically detect new libthread 47 static int_fnP_thread_t_iP_uP_stack_tP_gregset_t _thr_getstate; 48 static int_fnP_thread_t_i_gregset_t _thr_setstate; 49 static int_fnP_thread_t_i _thr_setmutator; 50 static int_fnP_thread_t _thr_suspend_mutator; 51 static int_fnP_thread_t _thr_continue_mutator; 52 // libthread_init sets the above, if the new functionality is detected 53 54 // initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization 55 static int_fnP_mutex_tP _mutex_lock; 56 static int_fnP_mutex_tP _mutex_trylock; 57 static int_fnP_mutex_tP _mutex_unlock; 58 static int_fnP_mutex_tP_i_vP _mutex_init; 59 static int_fnP_mutex_tP _mutex_destroy; 60 static int _mutex_scope; 61 62 static int_fnP_cond_tP_mutex_tP_timestruc_tP _cond_timedwait; 63 static int_fnP_cond_tP_mutex_tP _cond_wait; 64 static int_fnP_cond_tP _cond_signal; 65 static int_fnP_cond_tP _cond_broadcast; 66 static int_fnP_cond_tP_i_vP _cond_init; 67 static int_fnP_cond_tP _cond_destroy; 68 static int _cond_scope; 69 70 typedef uintptr_t lgrp_cookie_t; 71 typedef id_t lgrp_id_t; 72 typedef int lgrp_rsrc_t; 73 typedef enum lgrp_view { 74 LGRP_VIEW_CALLER, /* what's available to the caller */ 75 LGRP_VIEW_OS /* what's available to operating system */ 76 } lgrp_view_t; 77 78 typedef uint_t (*getisax_func_t)(uint32_t* array, uint_t n); 79 80 typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id); 81 typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view); 82 typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie); 83 typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie); 84 typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent, 85 lgrp_id_t *lgrp_array, uint_t lgrp_array_size); 86 typedef int (*lgrp_resources_func_t)(lgrp_cookie_t cookie, lgrp_id_t lgrp, 87 lgrp_id_t *lgrp_array, uint_t lgrp_array_size, 88 lgrp_rsrc_t type); 89 typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie); 90 typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie); 91 typedef int (*meminfo_func_t)(const uint64_t inaddr[], int addr_count, 92 const uint_t info_req[], int info_count, 93 uint64_t outdata[], uint_t validity[]); 94 95 static getisax_func_t _getisax; 96 97 static lgrp_home_func_t _lgrp_home; 98 static lgrp_init_func_t _lgrp_init; 99 static lgrp_fini_func_t _lgrp_fini; 100 static lgrp_root_func_t _lgrp_root; 101 static lgrp_children_func_t _lgrp_children; 102 static lgrp_resources_func_t _lgrp_resources; 103 static lgrp_nlgrps_func_t _lgrp_nlgrps; 104 static lgrp_cookie_stale_func_t _lgrp_cookie_stale; 105 static lgrp_cookie_t _lgrp_cookie; 106 107 static meminfo_func_t _meminfo; 108 109 // Large Page Support--mpss. 110 static bool set_mpss_range(caddr_t start, size_t bytes, size_t align); 111 112 static void init_thread_fpu_state(void); 113 114 static void try_enable_extended_io(); 115 116 // For signal-chaining 117 static unsigned long sigs; // mask of signals that have 118 // preinstalled signal handlers 119 static struct sigaction *(*get_signal_action)(int); 120 static struct sigaction *get_preinstalled_handler(int); 121 static int (*get_libjsig_version)(); 122 static void save_preinstalled_handler(int, struct sigaction&); 123 static void check_signal_handler(int sig); 124 // For overridable signals 125 static int _SIGinterrupt; // user-overridable INTERRUPT_SIGNAL 126 static int _SIGasync; // user-overridable ASYNC_SIGNAL 127 static void set_SIGinterrupt(int newsig) { _SIGinterrupt = newsig; } 128 static void set_SIGasync(int newsig) { _SIGasync = newsig; } 129 130 131 public: 132 // Large Page Support--ISM. 133 static bool largepage_range(char* addr, size_t size); 134 135 static int SIGinterrupt() { return _SIGinterrupt; } 136 static int SIGasync() { return _SIGasync; } 137 static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo 138 139 static bool valid_stack_address(Thread* thread, address sp); 140 static bool valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect); 141 static ucontext_t* get_valid_uc_in_signal_handler(Thread* thread, 142 ucontext_t* uc); 143 144 static ExtendedPC ucontext_get_ExtendedPC(ucontext_t* uc); 145 static intptr_t* ucontext_get_sp(ucontext_t* uc); 146 // ucontext_get_fp() is only used by Solaris X86 (see note below) 147 static intptr_t* ucontext_get_fp(ucontext_t* uc); 148 149 // For Analyzer Forte AsyncGetCallTrace profiling support: 150 // Parameter ret_fp is only used by Solaris X86. 151 // 152 // We should have different declarations of this interface in 153 // os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file 154 // provides extensions to the os class and not the Solaris class. 155 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc, 156 intptr_t** ret_sp, intptr_t** ret_fp); 157 158 static void hotspot_sigmask(Thread* thread); 159 160 protected: 161 // Solaris-specific interface goes here 162 static julong available_memory(); 163 static julong physical_memory() { return _physical_memory; } 164 static julong _physical_memory; 165 static void initialize_system_info(); 166 static int _dev_zero_fd; 167 static int get_dev_zero_fd() { return _dev_zero_fd; } 168 static void set_dev_zero_fd(int fd) { _dev_zero_fd = fd; } 169 static char* mmap_chunk(char *addr, size_t size, int flags, int prot); 170 static char* anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed); 171 static bool mpss_sanity_check(bool warn, size_t * page_size); 172 static bool ism_sanity_check (bool warn, size_t * page_size); 173 174 // Workaround for 4352906. thr_stksegment sometimes returns 175 // a bad value for the primordial thread's stack base when 176 // it is called more than one time. 177 // Workaround is to cache the initial value to avoid further 178 // calls to thr_stksegment. 179 // It appears that someone (Hotspot?) is trashing the user's 180 // proc_t structure (note that this is a system struct). 181 static address _main_stack_base; 182 183 public: 184 static void libthread_init(); 185 static void synchronization_init(); 186 static bool liblgrp_init(); 187 // Load miscellaneous symbols. 188 static void misc_sym_init(); 189 // This boolean allows users to forward their own non-matching signals 190 // to JVM_handle_solaris_signal, harmlessly. 191 static bool signal_handlers_are_installed; 192 193 static void signal_sets_init(); 194 static void install_signal_handlers(); 195 static void set_signal_handler(int sig, bool set_installed, bool oktochain); 196 static void init_signal_mem(); 197 static bool is_sig_ignored(int sig); 198 static void set_our_sigflags(int, int); 199 static int get_our_sigflags(int); 200 201 // For signal-chaining 202 static bool libjsig_is_loaded; // libjsig that interposes sigaction(), 203 // signal(), sigset() is loaded 204 static struct sigaction *get_chained_signal_action(int sig); 205 static bool chained_handler(int sig, siginfo_t *siginfo, void *context); 206 207 // The following allow us to link against both the old and new libthread (2.8) 208 // and exploit the new libthread functionality if available. 209 210 static bool T2_libthread() { return _T2_libthread; } 211 static void set_T2_libthread(bool T2_libthread) { _T2_libthread = T2_libthread; } 212 213 static int thr_getstate(thread_t tid, int *flag, unsigned *lwp, stack_t *ss, gregset_t rs) 214 { return _thr_getstate(tid, flag, lwp, ss, rs); } 215 static void set_thr_getstate(int_fnP_thread_t_iP_uP_stack_tP_gregset_t func) 216 { _thr_getstate = func; } 217 218 static int thr_setstate(thread_t tid, int flag, gregset_t rs) { return _thr_setstate(tid, flag, rs); } 219 static void set_thr_setstate(int_fnP_thread_t_i_gregset_t func) { _thr_setstate = func; } 220 221 static int thr_setmutator(thread_t tid, int enabled) { return _thr_setmutator(tid, enabled); } 222 static void set_thr_setmutator(int_fnP_thread_t_i func) { _thr_setmutator = func; } 223 224 static int thr_suspend_mutator(thread_t tid) { return _thr_suspend_mutator(tid); } 225 static void set_thr_suspend_mutator(int_fnP_thread_t func) { _thr_suspend_mutator = func; } 226 227 static int thr_continue_mutator(thread_t tid) { return _thr_continue_mutator(tid); } 228 static void set_thr_continue_mutator(int_fnP_thread_t func) { _thr_continue_mutator = func; } 229 230 // Allows us to switch between lwp and thread -based synchronization 231 static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); } 232 static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); } 233 static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); } 234 static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); } 235 static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); } 236 static int mutex_scope() { return _mutex_scope; } 237 238 static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; } 239 static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; } 240 static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; } 241 static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; } 242 static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; } 243 static void set_mutex_scope(int scope) { _mutex_scope = scope; } 244 245 static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst) 246 { return _cond_timedwait(cv, mx, abst); } 247 static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); } 248 static int cond_signal(cond_t *cv) { return _cond_signal(cv); } 249 static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); } 250 static int cond_init(cond_t *cv) { return _cond_init(cv, os::Solaris::cond_scope(), NULL); } 251 static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); } 252 static int cond_scope() { return _cond_scope; } 253 254 static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func) 255 { _cond_timedwait = func; } 256 static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; } 257 static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; } 258 static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; } 259 static void set_cond_init(int_fnP_cond_tP_i_vP func) { _cond_init = func; } 260 static void set_cond_destroy(int_fnP_cond_tP func) { _cond_destroy = func; } 261 static void set_cond_scope(int scope) { _cond_scope = scope; } 262 263 static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; } 264 static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; } 265 static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; } 266 static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; } 267 static void set_lgrp_children(lgrp_children_func_t func) { _lgrp_children = func; } 268 static void set_lgrp_resources(lgrp_resources_func_t func) { _lgrp_resources = func; } 269 static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func) { _lgrp_nlgrps = func; } 270 static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; } 271 static void set_lgrp_cookie(lgrp_cookie_t cookie) { _lgrp_cookie = cookie; } 272 273 static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; } 274 static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; } 275 static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; } 276 static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; }; 277 static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent, 278 lgrp_id_t *lgrp_array, uint_t lgrp_array_size) { 279 return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1; 280 } 281 static int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp, 282 lgrp_id_t *lgrp_array, uint_t lgrp_array_size, 283 lgrp_rsrc_t type) { 284 return _lgrp_resources != NULL ? _lgrp_resources(cookie, lgrp, lgrp_array, lgrp_array_size, type) : -1; 285 } 286 287 static int lgrp_nlgrps(lgrp_cookie_t cookie) { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; } 288 static int lgrp_cookie_stale(lgrp_cookie_t cookie) { 289 return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1; 290 } 291 static lgrp_cookie_t lgrp_cookie() { return _lgrp_cookie; } 292 293 static bool supports_getisax() { return _getisax != NULL; } 294 static uint_t getisax(uint32_t* array, uint_t n); 295 296 static void set_meminfo(meminfo_func_t func) { _meminfo = func; } 297 static int meminfo (const uint64_t inaddr[], int addr_count, 298 const uint_t info_req[], int info_count, 299 uint64_t outdata[], uint_t validity[]) { 300 return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count, 301 outdata, validity) : -1; 302 } 303 304 enum { 305 clear_interrupted = true 306 }; 307 static void setup_interruptible(JavaThread* thread); 308 static void setup_interruptible_already_blocked(JavaThread* thread); 309 static JavaThread* setup_interruptible(); 310 static void cleanup_interruptible(JavaThread* thread); 311 312 // perf counter incrementers used by _INTERRUPTIBLE 313 314 static void bump_interrupted_before_count(); 315 static void bump_interrupted_during_count(); 316 317 #ifdef ASSERT 318 static JavaThread* setup_interruptible_native(); 319 static void cleanup_interruptible_native(JavaThread* thread); 320 #endif 321 322 static sigset_t* unblocked_signals(); 323 static sigset_t* vm_signals(); 324 static sigset_t* allowdebug_blocked_signals(); 325 326 // %%% Following should be promoted to os.hpp: 327 // Trace number of created threads 328 static jint _os_thread_limit; 329 static volatile jint _os_thread_count; 330 331 // Minimum stack size a thread can be created with (allowing 332 // the VM to completely create the thread and enter user code) 333 334 static size_t min_stack_allowed; 335 336 // Stack overflow handling 337 338 static int max_register_window_saves_before_flushing(); 339 340 // Stack repair handling 341 342 // none present 343 344 }; 345 346 class PlatformEvent : public CHeapObj { 347 private: 348 double CachePad [4] ; // increase odds that _mutex is sole occupant of cache line 349 volatile int _Event ; 350 int _nParked ; 351 int _pipev [2] ; 352 mutex_t _mutex [1] ; 353 cond_t _cond [1] ; 354 double PostPad [2] ; 355 356 protected: 357 // Defining a protected ctor effectively gives us an abstract base class. 358 // That is, a PlatformEvent can never be instantiated "naked" but only 359 // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent). 360 // TODO-FIXME: make dtor private 361 ~PlatformEvent() { guarantee (0, "invariant") ; } 362 PlatformEvent() { 363 int status; 364 status = os::Solaris::cond_init(_cond); 365 assert_status(status == 0, status, "cond_init"); 366 status = os::Solaris::mutex_init(_mutex); 367 assert_status(status == 0, status, "mutex_init"); 368 _Event = 0 ; 369 _nParked = 0 ; 370 _pipev[0] = _pipev[1] = -1 ; 371 } 372 373 public: 374 // Exercise caution using reset() and fired() -- they may require MEMBARs 375 void reset() { _Event = 0 ; } 376 int fired() { return _Event; } 377 void park () ; 378 int park (jlong millis) ; 379 int TryPark () ; 380 void unpark () ; 381 } ; 382 383 class PlatformParker : public CHeapObj { 384 protected: 385 mutex_t _mutex [1] ; 386 cond_t _cond [1] ; 387 388 public: // TODO-FIXME: make dtor private 389 ~PlatformParker() { guarantee (0, "invariant") ; } 390 391 public: 392 PlatformParker() { 393 int status; 394 status = os::Solaris::cond_init(_cond); 395 assert_status(status == 0, status, "cond_init"); 396 status = os::Solaris::mutex_init(_mutex); 397 assert_status(status == 0, status, "mutex_init"); 398 } 399 } ; 400 401 #endif // OS_SOLARIS_VM_OS_SOLARIS_HPP