1 /* 2 * Copyright (c) 1997, 2015, 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. 31 static bool zero_page_read_protected() { return true; } 32 33 class 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 // initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization 45 static int_fnP_mutex_tP _mutex_lock; 46 static int_fnP_mutex_tP _mutex_trylock; 47 static int_fnP_mutex_tP _mutex_unlock; 48 static int_fnP_mutex_tP_i_vP _mutex_init; 49 static int_fnP_mutex_tP _mutex_destroy; 50 static int _mutex_scope; 51 52 static int_fnP_cond_tP_mutex_tP_timestruc_tP _cond_timedwait; 53 static int_fnP_cond_tP_mutex_tP _cond_wait; 54 static int_fnP_cond_tP _cond_signal; 55 static int_fnP_cond_tP _cond_broadcast; 56 static int_fnP_cond_tP_i_vP _cond_init; 57 static int_fnP_cond_tP _cond_destroy; 58 static int _cond_scope; 59 60 typedef uintptr_t lgrp_cookie_t; 61 typedef id_t lgrp_id_t; 62 typedef int lgrp_rsrc_t; 63 typedef enum lgrp_view { 64 LGRP_VIEW_CALLER, // what's available to the caller 65 LGRP_VIEW_OS // what's available to operating system 66 } lgrp_view_t; 67 68 typedef uint_t (*getisax_func_t)(uint32_t* array, uint_t n); 69 70 typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id); 71 typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view); 72 typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie); 73 typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie); 74 typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent, 75 lgrp_id_t *lgrp_array, uint_t lgrp_array_size); 76 typedef int (*lgrp_resources_func_t)(lgrp_cookie_t cookie, lgrp_id_t lgrp, 77 lgrp_id_t *lgrp_array, uint_t lgrp_array_size, 78 lgrp_rsrc_t type); 79 typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie); 80 typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie); 81 typedef int (*meminfo_func_t)(const uint64_t inaddr[], int addr_count, 82 const uint_t info_req[], int info_count, 83 uint64_t outdata[], uint_t validity[]); 84 85 static getisax_func_t _getisax; 86 87 static lgrp_home_func_t _lgrp_home; 88 static lgrp_init_func_t _lgrp_init; 89 static lgrp_fini_func_t _lgrp_fini; 90 static lgrp_root_func_t _lgrp_root; 91 static lgrp_children_func_t _lgrp_children; 92 static lgrp_resources_func_t _lgrp_resources; 93 static lgrp_nlgrps_func_t _lgrp_nlgrps; 94 static lgrp_cookie_stale_func_t _lgrp_cookie_stale; 95 static lgrp_cookie_t _lgrp_cookie; 96 97 static meminfo_func_t _meminfo; 98 99 // Large Page Support 100 static bool is_valid_page_size(size_t bytes); 101 static size_t page_size_for_alignment(size_t alignment); 102 static bool setup_large_pages(caddr_t start, size_t bytes, size_t align); 103 104 static void init_thread_fpu_state(void); 105 106 static void try_enable_extended_io(); 107 108 // For signal-chaining 109 static unsigned long sigs; // mask of signals that have 110 // preinstalled signal handlers 111 static struct sigaction *(*get_signal_action)(int); 112 static struct sigaction *get_preinstalled_handler(int); 113 static int (*get_libjsig_version)(); 114 static void save_preinstalled_handler(int, struct sigaction&); 115 static void check_signal_handler(int sig); 116 // For overridable signals 117 static int _SIGinterrupt; // user-overridable INTERRUPT_SIGNAL 118 static int _SIGasync; // user-overridable ASYNC_SIGNAL 119 static void set_SIGinterrupt(int newsig) { _SIGinterrupt = newsig; } 120 static void set_SIGasync(int newsig) { _SIGasync = newsig; } 121 122 public: 123 // Large Page Support--ISM. 124 static bool largepage_range(char* addr, size_t size); 125 126 static int SIGinterrupt() { return _SIGinterrupt; } 127 static int SIGasync() { return _SIGasync; } 128 static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo 129 130 static bool valid_stack_address(Thread* thread, address sp); 131 static bool valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect); 132 static ucontext_t* get_valid_uc_in_signal_handler(Thread* thread, 133 ucontext_t* uc); 134 135 static ExtendedPC ucontext_get_ExtendedPC(ucontext_t* uc); 136 static intptr_t* ucontext_get_sp(ucontext_t* uc); 137 // ucontext_get_fp() is only used by Solaris X86 (see note below) 138 static intptr_t* ucontext_get_fp(ucontext_t* uc); 139 static address ucontext_get_pc(ucontext_t* uc); 140 static void ucontext_set_pc(ucontext_t* uc, address pc); 141 142 // For Analyzer Forte AsyncGetCallTrace profiling support: 143 // Parameter ret_fp is only used by Solaris X86. 144 // 145 // We should have different declarations of this interface in 146 // os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file 147 // provides extensions to the os class and not the Solaris class. 148 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc, 149 intptr_t** ret_sp, intptr_t** ret_fp); 150 151 static bool get_frame_at_stack_banging_point(JavaThread* thread, ucontext_t* uc, frame* fr); 152 153 static void hotspot_sigmask(Thread* thread); 154 155 // SR_handler 156 static void SR_handler(Thread* thread, ucontext_t* uc); 157 protected: 158 // Solaris-specific interface goes here 159 static julong available_memory(); 160 static julong physical_memory() { return _physical_memory; } 161 static julong _physical_memory; 162 static void initialize_system_info(); 163 static int _dev_zero_fd; 164 static int get_dev_zero_fd() { return _dev_zero_fd; } 165 static void set_dev_zero_fd(int fd) { _dev_zero_fd = fd; } 166 static int commit_memory_impl(char* addr, size_t bytes, bool exec); 167 static int commit_memory_impl(char* addr, size_t bytes, 168 size_t alignment_hint, bool exec); 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); 172 173 // Workaround for 4352906. thr_stksegment sometimes returns 174 // a bad value for the primordial thread's stack base when 175 // it is called more than one time. 176 // Workaround is to cache the initial value to avoid further 177 // calls to thr_stksegment. 178 // It appears that someone (Hotspot?) is trashing the user's 179 // proc_t structure (note that this is a system struct). 180 static address _main_stack_base; 181 182 static void print_distro_info(outputStream* st); 183 static void print_libversion_info(outputStream* st); 184 185 public: 186 static void libthread_init(); 187 static void synchronization_init(); 188 static bool liblgrp_init(); 189 // Load miscellaneous symbols. 190 static void misc_sym_init(); 191 // This boolean allows users to forward their own non-matching signals 192 // to JVM_handle_solaris_signal, harmlessly. 193 static bool signal_handlers_are_installed; 194 195 static void signal_sets_init(); 196 static void install_signal_handlers(); 197 static void set_signal_handler(int sig, bool set_installed, bool oktochain); 198 static void init_signal_mem(); 199 static bool is_sig_ignored(int sig); 200 static void set_our_sigflags(int, int); 201 static int get_our_sigflags(int); 202 203 // For signal-chaining 204 static bool libjsig_is_loaded; // libjsig that interposes sigaction(), 205 // signal(), sigset() is loaded 206 static struct sigaction *get_chained_signal_action(int sig); 207 static bool chained_handler(int sig, siginfo_t *siginfo, void *context); 208 209 // Allows us to switch between lwp and thread -based synchronization 210 static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); } 211 static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); } 212 static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); } 213 static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); } 214 static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); } 215 static int mutex_scope() { return _mutex_scope; } 216 217 static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; } 218 static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; } 219 static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; } 220 static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; } 221 static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; } 222 static void set_mutex_scope(int scope) { _mutex_scope = scope; } 223 224 static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst) { return _cond_timedwait(cv, mx, abst); } 225 static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); } 226 static int cond_signal(cond_t *cv) { return _cond_signal(cv); } 227 static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); } 228 static int cond_init(cond_t *cv) { return _cond_init(cv, os::Solaris::cond_scope(), NULL); } 229 static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); } 230 static int cond_scope() { return _cond_scope; } 231 232 static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func) { _cond_timedwait = func; } 233 static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; } 234 static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; } 235 static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; } 236 static void set_cond_init(int_fnP_cond_tP_i_vP func) { _cond_init = func; } 237 static void set_cond_destroy(int_fnP_cond_tP func) { _cond_destroy = func; } 238 static void set_cond_scope(int scope) { _cond_scope = scope; } 239 240 static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; } 241 static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; } 242 static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; } 243 static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; } 244 static void set_lgrp_children(lgrp_children_func_t func) { _lgrp_children = func; } 245 static void set_lgrp_resources(lgrp_resources_func_t func) { _lgrp_resources = func; } 246 static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func) { _lgrp_nlgrps = func; } 247 static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; } 248 static void set_lgrp_cookie(lgrp_cookie_t cookie) { _lgrp_cookie = cookie; } 249 250 static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; } 251 static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; } 252 static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; } 253 static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; } 254 static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent, 255 lgrp_id_t *lgrp_array, uint_t lgrp_array_size) { 256 return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1; 257 } 258 static int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp, 259 lgrp_id_t *lgrp_array, uint_t lgrp_array_size, 260 lgrp_rsrc_t type) { 261 return _lgrp_resources != NULL ? _lgrp_resources(cookie, lgrp, lgrp_array, lgrp_array_size, type) : -1; 262 } 263 264 static int lgrp_nlgrps(lgrp_cookie_t cookie) { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; } 265 static int lgrp_cookie_stale(lgrp_cookie_t cookie) { 266 return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1; 267 } 268 static lgrp_cookie_t lgrp_cookie() { return _lgrp_cookie; } 269 270 static bool supports_getisax() { return _getisax != NULL; } 271 static uint_t getisax(uint32_t* array, uint_t n); 272 273 static void set_meminfo(meminfo_func_t func) { _meminfo = func; } 274 static int meminfo (const uint64_t inaddr[], int addr_count, 275 const uint_t info_req[], int info_count, 276 uint64_t outdata[], uint_t validity[]) { 277 return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count, 278 outdata, validity) : -1; 279 } 280 281 static sigset_t* unblocked_signals(); 282 static sigset_t* vm_signals(); 283 static sigset_t* allowdebug_blocked_signals(); 284 285 // %%% Following should be promoted to os.hpp: 286 // Trace number of created threads 287 static jint _os_thread_limit; 288 static volatile jint _os_thread_count; 289 290 // Minimum stack size a thread can be created with (allowing 291 // the VM to completely create the thread and enter user code) 292 293 static size_t min_stack_allowed; 294 295 // Stack overflow handling 296 297 static int max_register_window_saves_before_flushing(); 298 299 // Stack repair handling 300 301 // none present 302 303 }; 304 305 class PlatformEvent : public CHeapObj<mtInternal> { 306 private: 307 double CachePad[4]; // increase odds that _mutex is sole occupant of cache line 308 volatile int _Event; 309 int _nParked; 310 int _pipev[2]; 311 mutex_t _mutex[1]; 312 cond_t _cond[1]; 313 double PostPad[2]; 314 315 protected: 316 // Defining a protected ctor effectively gives us an abstract base class. 317 // That is, a PlatformEvent can never be instantiated "naked" but only 318 // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent). 319 // TODO-FIXME: make dtor private 320 ~PlatformEvent() { guarantee(0, "invariant"); } 321 PlatformEvent() { 322 int status; 323 status = os::Solaris::cond_init(_cond); 324 assert_status(status == 0, status, "cond_init"); 325 status = os::Solaris::mutex_init(_mutex); 326 assert_status(status == 0, status, "mutex_init"); 327 _Event = 0; 328 _nParked = 0; 329 _pipev[0] = _pipev[1] = -1; 330 } 331 332 public: 333 // Exercise caution using reset() and fired() -- they may require MEMBARs 334 void reset() { _Event = 0; } 335 int fired() { return _Event; } 336 void park(); 337 int park(jlong millis); 338 void unpark(); 339 }; 340 341 class PlatformParker : public CHeapObj<mtInternal> { 342 protected: 343 mutex_t _mutex[1]; 344 cond_t _cond[1]; 345 346 public: // TODO-FIXME: make dtor private 347 ~PlatformParker() { guarantee(0, "invariant"); } 348 349 public: 350 PlatformParker() { 351 int status; 352 status = os::Solaris::cond_init(_cond); 353 assert_status(status == 0, status, "cond_init"); 354 status = os::Solaris::mutex_init(_mutex); 355 assert_status(status == 0, status, "mutex_init"); 356 } 357 }; 358 359 #endif // OS_SOLARIS_VM_OS_SOLARIS_HPP