os_solaris.hpp revision 5990:b0133e4187d3
1/* 2 * Copyright (c) 1997, 2013, 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// Information about the protection of the page at address '0' on this os. 31static bool zero_page_read_protected() { return true; } 32 33class Solaris { 34 friend class os; 35 36 private: 37 38 // Support for "new" libthread APIs for getting & setting thread context (2.8) 39 #define TRS_VALID 0 40 #define TRS_NONVOLATILE 1 41 #define TRS_LWPID 2 42 #define TRS_INVALID 3 43 44 // _T2_libthread is true if we believe we are running with the newer 45 // SunSoft lib/lwp/libthread: default Solaris 9, available Solaris 8 46 // which is a lightweight libthread that also supports all T1 47 static bool _T2_libthread; 48 // These refer to new libthread interface functions 49 // They get intialized if we dynamically detect new libthread 50 static int_fnP_thread_t_iP_uP_stack_tP_gregset_t _thr_getstate; 51 static int_fnP_thread_t_i_gregset_t _thr_setstate; 52 static int_fnP_thread_t_i _thr_setmutator; 53 static int_fnP_thread_t _thr_suspend_mutator; 54 static int_fnP_thread_t _thr_continue_mutator; 55 // libthread_init sets the above, if the new functionality is detected 56 57 // initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization 58 static int_fnP_mutex_tP _mutex_lock; 59 static int_fnP_mutex_tP _mutex_trylock; 60 static int_fnP_mutex_tP _mutex_unlock; 61 static int_fnP_mutex_tP_i_vP _mutex_init; 62 static int_fnP_mutex_tP _mutex_destroy; 63 static int _mutex_scope; 64 65 static int_fnP_cond_tP_mutex_tP_timestruc_tP _cond_timedwait; 66 static int_fnP_cond_tP_mutex_tP _cond_wait; 67 static int_fnP_cond_tP _cond_signal; 68 static int_fnP_cond_tP _cond_broadcast; 69 static int_fnP_cond_tP_i_vP _cond_init; 70 static int_fnP_cond_tP _cond_destroy; 71 static int _cond_scope; 72 73 typedef uintptr_t lgrp_cookie_t; 74 typedef id_t lgrp_id_t; 75 typedef int lgrp_rsrc_t; 76 typedef enum lgrp_view { 77 LGRP_VIEW_CALLER, /* what's available to the caller */ 78 LGRP_VIEW_OS /* what's available to operating system */ 79 } lgrp_view_t; 80 81 typedef uint_t (*getisax_func_t)(uint32_t* array, uint_t n); 82 83 typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id); 84 typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view); 85 typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie); 86 typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie); 87 typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent, 88 lgrp_id_t *lgrp_array, uint_t lgrp_array_size); 89 typedef int (*lgrp_resources_func_t)(lgrp_cookie_t cookie, lgrp_id_t lgrp, 90 lgrp_id_t *lgrp_array, uint_t lgrp_array_size, 91 lgrp_rsrc_t type); 92 typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie); 93 typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie); 94 typedef int (*meminfo_func_t)(const uint64_t inaddr[], int addr_count, 95 const uint_t info_req[], int info_count, 96 uint64_t outdata[], uint_t validity[]); 97 98 static getisax_func_t _getisax; 99 100 static lgrp_home_func_t _lgrp_home; 101 static lgrp_init_func_t _lgrp_init; 102 static lgrp_fini_func_t _lgrp_fini; 103 static lgrp_root_func_t _lgrp_root; 104 static lgrp_children_func_t _lgrp_children; 105 static lgrp_resources_func_t _lgrp_resources; 106 static lgrp_nlgrps_func_t _lgrp_nlgrps; 107 static lgrp_cookie_stale_func_t _lgrp_cookie_stale; 108 static lgrp_cookie_t _lgrp_cookie; 109 110 static meminfo_func_t _meminfo; 111 112 // Large Page Support 113 static bool setup_large_pages(caddr_t start, size_t bytes, size_t align); 114 115 static void init_thread_fpu_state(void); 116 117 static void try_enable_extended_io(); 118 119 // For signal-chaining 120 static unsigned long sigs; // mask of signals that have 121 // preinstalled signal handlers 122 static struct sigaction *(*get_signal_action)(int); 123 static struct sigaction *get_preinstalled_handler(int); 124 static int (*get_libjsig_version)(); 125 static void save_preinstalled_handler(int, struct sigaction&); 126 static void check_signal_handler(int sig); 127 // For overridable signals 128 static int _SIGinterrupt; // user-overridable INTERRUPT_SIGNAL 129 static int _SIGasync; // user-overridable ASYNC_SIGNAL 130 static void set_SIGinterrupt(int newsig) { _SIGinterrupt = newsig; } 131 static void set_SIGasync(int newsig) { _SIGasync = newsig; } 132 133 public: 134 // Large Page Support--ISM. 135 static bool largepage_range(char* addr, size_t size); 136 137 static int SIGinterrupt() { return _SIGinterrupt; } 138 static int SIGasync() { return _SIGasync; } 139 static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo 140 141 static bool valid_stack_address(Thread* thread, address sp); 142 static bool valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect); 143 static ucontext_t* get_valid_uc_in_signal_handler(Thread* thread, 144 ucontext_t* uc); 145 146 static ExtendedPC ucontext_get_ExtendedPC(ucontext_t* uc); 147 static intptr_t* ucontext_get_sp(ucontext_t* uc); 148 // ucontext_get_fp() is only used by Solaris X86 (see note below) 149 static intptr_t* ucontext_get_fp(ucontext_t* uc); 150 static address ucontext_get_pc(ucontext_t* uc); 151 152 // For Analyzer Forte AsyncGetCallTrace profiling support: 153 // Parameter ret_fp is only used by Solaris X86. 154 // 155 // We should have different declarations of this interface in 156 // os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file 157 // provides extensions to the os class and not the Solaris class. 158 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc, 159 intptr_t** ret_sp, intptr_t** ret_fp); 160 161 static void hotspot_sigmask(Thread* thread); 162 163 // SR_handler 164 static void SR_handler(Thread* thread, ucontext_t* uc); 165 protected: 166 // Solaris-specific interface goes here 167 static julong available_memory(); 168 static julong physical_memory() { return _physical_memory; } 169 static julong _physical_memory; 170 static void initialize_system_info(); 171 static int _dev_zero_fd; 172 static int get_dev_zero_fd() { return _dev_zero_fd; } 173 static void set_dev_zero_fd(int fd) { _dev_zero_fd = fd; } 174 static int commit_memory_impl(char* addr, size_t bytes, bool exec); 175 static int commit_memory_impl(char* addr, size_t bytes, 176 size_t alignment_hint, bool exec); 177 static char* mmap_chunk(char *addr, size_t size, int flags, int prot); 178 static char* anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed); 179 static bool mpss_sanity_check(bool warn, size_t * page_size); 180 181 // Workaround for 4352906. thr_stksegment sometimes returns 182 // a bad value for the primordial thread's stack base when 183 // it is called more than one time. 184 // Workaround is to cache the initial value to avoid further 185 // calls to thr_stksegment. 186 // It appears that someone (Hotspot?) is trashing the user's 187 // proc_t structure (note that this is a system struct). 188 static address _main_stack_base; 189 190 static void print_distro_info(outputStream* st); 191 static void print_libversion_info(outputStream* st); 192 193 public: 194 static void libthread_init(); 195 static void synchronization_init(); 196 static bool liblgrp_init(); 197 // Load miscellaneous symbols. 198 static void misc_sym_init(); 199 // This boolean allows users to forward their own non-matching signals 200 // to JVM_handle_solaris_signal, harmlessly. 201 static bool signal_handlers_are_installed; 202 203 static void signal_sets_init(); 204 static void install_signal_handlers(); 205 static void set_signal_handler(int sig, bool set_installed, bool oktochain); 206 static void init_signal_mem(); 207 static bool is_sig_ignored(int sig); 208 static void set_our_sigflags(int, int); 209 static int get_our_sigflags(int); 210 211 // For signal-chaining 212 static bool libjsig_is_loaded; // libjsig that interposes sigaction(), 213 // signal(), sigset() is loaded 214 static struct sigaction *get_chained_signal_action(int sig); 215 static bool chained_handler(int sig, siginfo_t *siginfo, void *context); 216 217 // The following allow us to link against both the old and new libthread (2.8) 218 // and exploit the new libthread functionality if available. 219 220 static bool T2_libthread() { return _T2_libthread; } 221 static void set_T2_libthread(bool T2_libthread) { _T2_libthread = T2_libthread; } 222 223 static int thr_getstate(thread_t tid, int *flag, unsigned *lwp, stack_t *ss, gregset_t rs) 224 { return _thr_getstate(tid, flag, lwp, ss, rs); } 225 static void set_thr_getstate(int_fnP_thread_t_iP_uP_stack_tP_gregset_t func) 226 { _thr_getstate = func; } 227 228 static int thr_setstate(thread_t tid, int flag, gregset_t rs) { return _thr_setstate(tid, flag, rs); } 229 static void set_thr_setstate(int_fnP_thread_t_i_gregset_t func) { _thr_setstate = func; } 230 231 static int thr_setmutator(thread_t tid, int enabled) { return _thr_setmutator(tid, enabled); } 232 static void set_thr_setmutator(int_fnP_thread_t_i func) { _thr_setmutator = func; } 233 234 static int thr_suspend_mutator(thread_t tid) { return _thr_suspend_mutator(tid); } 235 static void set_thr_suspend_mutator(int_fnP_thread_t func) { _thr_suspend_mutator = func; } 236 237 static int thr_continue_mutator(thread_t tid) { return _thr_continue_mutator(tid); } 238 static void set_thr_continue_mutator(int_fnP_thread_t func) { _thr_continue_mutator = func; } 239 240 // Allows us to switch between lwp and thread -based synchronization 241 static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); } 242 static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); } 243 static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); } 244 static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); } 245 static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); } 246 static int mutex_scope() { return _mutex_scope; } 247 248 static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; } 249 static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; } 250 static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; } 251 static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; } 252 static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; } 253 static void set_mutex_scope(int scope) { _mutex_scope = scope; } 254 255 static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst) 256 { return _cond_timedwait(cv, mx, abst); } 257 static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); } 258 static int cond_signal(cond_t *cv) { return _cond_signal(cv); } 259 static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); } 260 static int cond_init(cond_t *cv) { return _cond_init(cv, os::Solaris::cond_scope(), NULL); } 261 static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); } 262 static int cond_scope() { return _cond_scope; } 263 264 static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func) 265 { _cond_timedwait = func; } 266 static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; } 267 static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; } 268 static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; } 269 static void set_cond_init(int_fnP_cond_tP_i_vP func) { _cond_init = func; } 270 static void set_cond_destroy(int_fnP_cond_tP func) { _cond_destroy = func; } 271 static void set_cond_scope(int scope) { _cond_scope = scope; } 272 273 static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; } 274 static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; } 275 static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; } 276 static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; } 277 static void set_lgrp_children(lgrp_children_func_t func) { _lgrp_children = func; } 278 static void set_lgrp_resources(lgrp_resources_func_t func) { _lgrp_resources = func; } 279 static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func) { _lgrp_nlgrps = func; } 280 static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; } 281 static void set_lgrp_cookie(lgrp_cookie_t cookie) { _lgrp_cookie = cookie; } 282 283 static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; } 284 static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; } 285 static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; } 286 static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; }; 287 static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent, 288 lgrp_id_t *lgrp_array, uint_t lgrp_array_size) { 289 return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1; 290 } 291 static int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp, 292 lgrp_id_t *lgrp_array, uint_t lgrp_array_size, 293 lgrp_rsrc_t type) { 294 return _lgrp_resources != NULL ? _lgrp_resources(cookie, lgrp, lgrp_array, lgrp_array_size, type) : -1; 295 } 296 297 static int lgrp_nlgrps(lgrp_cookie_t cookie) { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; } 298 static int lgrp_cookie_stale(lgrp_cookie_t cookie) { 299 return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1; 300 } 301 static lgrp_cookie_t lgrp_cookie() { return _lgrp_cookie; } 302 303 static bool supports_getisax() { return _getisax != NULL; } 304 static uint_t getisax(uint32_t* array, uint_t n); 305 306 static void set_meminfo(meminfo_func_t func) { _meminfo = func; } 307 static int meminfo (const uint64_t inaddr[], int addr_count, 308 const uint_t info_req[], int info_count, 309 uint64_t outdata[], uint_t validity[]) { 310 return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count, 311 outdata, validity) : -1; 312 } 313 314 enum { 315 clear_interrupted = true 316 }; 317 static void setup_interruptible(JavaThread* thread); 318 static void setup_interruptible_already_blocked(JavaThread* thread); 319 static JavaThread* setup_interruptible(); 320 static void cleanup_interruptible(JavaThread* thread); 321 322 // perf counter incrementers used by _INTERRUPTIBLE 323 324 static void bump_interrupted_before_count(); 325 static void bump_interrupted_during_count(); 326 327#ifdef ASSERT 328 static JavaThread* setup_interruptible_native(); 329 static void cleanup_interruptible_native(JavaThread* thread); 330#endif 331 332 static sigset_t* unblocked_signals(); 333 static sigset_t* vm_signals(); 334 static sigset_t* allowdebug_blocked_signals(); 335 336 // %%% Following should be promoted to os.hpp: 337 // Trace number of created threads 338 static jint _os_thread_limit; 339 static volatile jint _os_thread_count; 340 341 // Minimum stack size a thread can be created with (allowing 342 // the VM to completely create the thread and enter user code) 343 344 static size_t min_stack_allowed; 345 346 // Stack overflow handling 347 348 static int max_register_window_saves_before_flushing(); 349 350 // Stack repair handling 351 352 // none present 353 354}; 355 356class PlatformEvent : public CHeapObj<mtInternal> { 357 private: 358 double CachePad [4] ; // increase odds that _mutex is sole occupant of cache line 359 volatile int _Event ; 360 int _nParked ; 361 int _pipev [2] ; 362 mutex_t _mutex [1] ; 363 cond_t _cond [1] ; 364 double PostPad [2] ; 365 366 protected: 367 // Defining a protected ctor effectively gives us an abstract base class. 368 // That is, a PlatformEvent can never be instantiated "naked" but only 369 // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent). 370 // TODO-FIXME: make dtor private 371 ~PlatformEvent() { guarantee (0, "invariant") ; } 372 PlatformEvent() { 373 int status; 374 status = os::Solaris::cond_init(_cond); 375 assert_status(status == 0, status, "cond_init"); 376 status = os::Solaris::mutex_init(_mutex); 377 assert_status(status == 0, status, "mutex_init"); 378 _Event = 0 ; 379 _nParked = 0 ; 380 _pipev[0] = _pipev[1] = -1 ; 381 } 382 383 public: 384 // Exercise caution using reset() and fired() -- they may require MEMBARs 385 void reset() { _Event = 0 ; } 386 int fired() { return _Event; } 387 void park () ; 388 int park (jlong millis) ; 389 int TryPark () ; 390 void unpark () ; 391} ; 392 393class PlatformParker : public CHeapObj<mtInternal> { 394 protected: 395 mutex_t _mutex [1] ; 396 cond_t _cond [1] ; 397 398 public: // TODO-FIXME: make dtor private 399 ~PlatformParker() { guarantee (0, "invariant") ; } 400 401 public: 402 PlatformParker() { 403 int status; 404 status = os::Solaris::cond_init(_cond); 405 assert_status(status == 0, status, "cond_init"); 406 status = os::Solaris::mutex_init(_mutex); 407 assert_status(status == 0, status, "mutex_init"); 408 } 409} ; 410 411#endif // OS_SOLARIS_VM_OS_SOLARIS_HPP 412