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 // see thr_setprio(3T) for the basis of these numbers 31 #define MinimumPriority 0 32 #define NormalPriority 64 33 #define MaximumPriority 127 34 35 // FX/60 is critical thread class/priority on T4 36 #define FXCriticalPriority 60 37 38 // Information about the protection of the page at address '0' on this os. 39 static bool zero_page_read_protected() { return true; } 40 41 class Solaris { 42 friend class os; 43 44 private: 45 46 // Support for "new" libthread APIs for getting & setting thread context (2.8) 47 #define TRS_VALID 0 48 #define TRS_NONVOLATILE 1 49 #define TRS_LWPID 2 50 #define TRS_INVALID 3 51 52 // initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization 53 static int_fnP_mutex_tP _mutex_lock; 54 static int_fnP_mutex_tP _mutex_trylock; 55 static int_fnP_mutex_tP _mutex_unlock; 56 static int_fnP_mutex_tP_i_vP _mutex_init; 57 static int_fnP_mutex_tP _mutex_destroy; 58 static int _mutex_scope; 59 60 static int_fnP_cond_tP_mutex_tP_timestruc_tP _cond_timedwait; 61 static int_fnP_cond_tP_mutex_tP _cond_wait; 62 static int_fnP_cond_tP _cond_signal; 63 static int_fnP_cond_tP _cond_broadcast; 64 static int_fnP_cond_tP_i_vP _cond_init; 65 static int_fnP_cond_tP _cond_destroy; 66 static int _cond_scope; 67 68 typedef uintptr_t lgrp_cookie_t; 69 typedef id_t lgrp_id_t; 70 typedef int lgrp_rsrc_t; 71 typedef enum lgrp_view { 72 LGRP_VIEW_CALLER, // what's available to the caller 73 LGRP_VIEW_OS // what's available to operating system 74 } lgrp_view_t; 75 76 typedef uint_t (*getisax_func_t)(uint32_t* array, uint_t n); 77 78 typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id); 79 typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view); 80 typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie); 81 typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie); 82 typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent, 83 lgrp_id_t *lgrp_array, uint_t lgrp_array_size); 84 typedef int (*lgrp_resources_func_t)(lgrp_cookie_t cookie, lgrp_id_t lgrp, 85 lgrp_id_t *lgrp_array, uint_t lgrp_array_size, 86 lgrp_rsrc_t type); 87 typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie); 88 typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie); 89 typedef int (*meminfo_func_t)(const uint64_t inaddr[], int addr_count, 90 const uint_t info_req[], int info_count, 91 uint64_t outdata[], uint_t validity[]); 92 93 static getisax_func_t _getisax; 94 95 static lgrp_home_func_t _lgrp_home; 96 static lgrp_init_func_t _lgrp_init; 97 static lgrp_fini_func_t _lgrp_fini; 98 static lgrp_root_func_t _lgrp_root; 99 static lgrp_children_func_t _lgrp_children; 100 static lgrp_resources_func_t _lgrp_resources; 101 static lgrp_nlgrps_func_t _lgrp_nlgrps; 102 static lgrp_cookie_stale_func_t _lgrp_cookie_stale; 103 static lgrp_cookie_t _lgrp_cookie; 104 105 static meminfo_func_t _meminfo; 106 107 // Large Page Support 108 static bool is_valid_page_size(size_t bytes); 109 static size_t page_size_for_alignment(size_t alignment); 110 static bool setup_large_pages(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 _SIGasync; // user-overridable ASYNC_SIGNAL 126 static void set_SIGasync(int newsig) { _SIGasync = newsig; } 127 128 public: 129 // Large Page Support--ISM. 130 static bool largepage_range(char* addr, size_t size); 131 132 static int SIGasync() { return _SIGasync; } 133 static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo 134 135 static bool valid_stack_address(Thread* thread, address sp); 136 static bool valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect); 137 static ucontext_t* get_valid_uc_in_signal_handler(Thread* thread, 138 ucontext_t* uc); 139 140 static ExtendedPC ucontext_get_ExtendedPC(ucontext_t* uc); 141 static intptr_t* ucontext_get_sp(ucontext_t* uc); 142 // ucontext_get_fp() is only used by Solaris X86 (see note below) 143 static intptr_t* ucontext_get_fp(ucontext_t* uc); 144 static address ucontext_get_pc(ucontext_t* uc); 145 static void ucontext_set_pc(ucontext_t* uc, address pc); 146 147 // For Analyzer Forte AsyncGetCallTrace profiling support: 148 // Parameter ret_fp is only used by Solaris X86. 149 // 150 // We should have different declarations of this interface in 151 // os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file 152 // provides extensions to the os class and not the Solaris class. 153 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc, 154 intptr_t** ret_sp, intptr_t** ret_fp); 155 156 static void hotspot_sigmask(Thread* thread); 157 158 // SR_handler 159 static void SR_handler(Thread* thread, ucontext_t* uc); 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 int commit_memory_impl(char* addr, size_t bytes, bool exec); 170 static int commit_memory_impl(char* addr, size_t bytes, 171 size_t alignment_hint, bool exec); 172 static char* mmap_chunk(char *addr, size_t size, int flags, int prot); 173 static char* anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed); 174 static bool mpss_sanity_check(bool warn, size_t * page_size); 175 176 // Workaround for 4352906. thr_stksegment sometimes returns 177 // a bad value for the primordial thread's stack base when 178 // it is called more than one time. 179 // Workaround is to cache the initial value to avoid further 180 // calls to thr_stksegment. 181 // It appears that someone (Hotspot?) is trashing the user's 182 // proc_t structure (note that this is a system struct). 183 static address _main_stack_base; 184 185 static void print_distro_info(outputStream* st); 186 static void print_libversion_info(outputStream* st); 187 188 public: 189 static void libthread_init(); 190 static void synchronization_init(); 191 static bool liblgrp_init(); 192 // Load miscellaneous symbols. 193 static void misc_sym_init(); 194 // This boolean allows users to forward their own non-matching signals 195 // to JVM_handle_solaris_signal, harmlessly. 196 static bool signal_handlers_are_installed; 197 198 static void signal_sets_init(); 199 static void install_signal_handlers(); 200 static void set_signal_handler(int sig, bool set_installed, bool oktochain); 201 static void init_signal_mem(); 202 static bool is_sig_ignored(int sig); 203 static void set_our_sigflags(int, int); 204 static int get_our_sigflags(int); 205 206 // For signal-chaining 207 static bool libjsig_is_loaded; // libjsig that interposes sigaction(), 208 // signal(), sigset() is loaded 209 static struct sigaction *get_chained_signal_action(int sig); 210 static bool chained_handler(int sig, siginfo_t *siginfo, void *context); 211 212 // Allows us to switch between lwp and thread -based synchronization 213 static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); } 214 static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); } 215 static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); } 216 static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); } 217 static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); } 218 static int mutex_scope() { return _mutex_scope; } 219 220 static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; } 221 static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; } 222 static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; } 223 static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; } 224 static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; } 225 static void set_mutex_scope(int scope) { _mutex_scope = scope; } 226 227 static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst) { return _cond_timedwait(cv, mx, abst); } 228 static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); } 229 static int cond_signal(cond_t *cv) { return _cond_signal(cv); } 230 static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); } 231 static int cond_init(cond_t *cv) { return _cond_init(cv, os::Solaris::cond_scope(), NULL); } 232 static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); } 233 static int cond_scope() { return _cond_scope; } 234 235 static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func) { _cond_timedwait = func; } 236 static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; } 237 static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; } 238 static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; } 239 static void set_cond_init(int_fnP_cond_tP_i_vP func) { _cond_init = func; } 240 static void set_cond_destroy(int_fnP_cond_tP func) { _cond_destroy = func; } 241 static void set_cond_scope(int scope) { _cond_scope = scope; } 242 243 static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; } 244 static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; } 245 static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; } 246 static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; } 247 static void set_lgrp_children(lgrp_children_func_t func) { _lgrp_children = func; } 248 static void set_lgrp_resources(lgrp_resources_func_t func) { _lgrp_resources = func; } 249 static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func) { _lgrp_nlgrps = func; } 250 static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; } 251 static void set_lgrp_cookie(lgrp_cookie_t cookie) { _lgrp_cookie = cookie; } 252 253 static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; } 254 static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; } 255 static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; } 256 static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; } 257 static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent, 258 lgrp_id_t *lgrp_array, uint_t lgrp_array_size) { 259 return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1; 260 } 261 static int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp, 262 lgrp_id_t *lgrp_array, uint_t lgrp_array_size, 263 lgrp_rsrc_t type) { 264 return _lgrp_resources != NULL ? _lgrp_resources(cookie, lgrp, lgrp_array, lgrp_array_size, type) : -1; 265 } 266 267 static int lgrp_nlgrps(lgrp_cookie_t cookie) { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; } 268 static int lgrp_cookie_stale(lgrp_cookie_t cookie) { 269 return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1; 270 } 271 static lgrp_cookie_t lgrp_cookie() { return _lgrp_cookie; } 272 273 static bool supports_getisax() { return _getisax != NULL; } 274 static uint_t getisax(uint32_t* array, uint_t n); 275 276 static void set_meminfo(meminfo_func_t func) { _meminfo = func; } 277 static int meminfo (const uint64_t inaddr[], int addr_count, 278 const uint_t info_req[], int info_count, 279 uint64_t outdata[], uint_t validity[]) { 280 return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count, 281 outdata, validity) : -1; 282 } 283 284 static sigset_t* unblocked_signals(); 285 static sigset_t* vm_signals(); 286 static sigset_t* allowdebug_blocked_signals(); 287 288 // %%% Following should be promoted to os.hpp: 289 // Trace number of created threads 290 static jint _os_thread_limit; 291 static volatile jint _os_thread_count; 292 293 // Minimum stack size a thread can be created with (allowing 294 // the VM to completely create the thread and enter user code) 295 296 static size_t min_stack_allowed; 297 298 // Stack overflow handling 299 300 static int max_register_window_saves_before_flushing(); 301 302 // Stack repair handling 303 304 // none present 305 306 }; 307 308 class PlatformEvent : public CHeapObj<mtInternal> { 309 private: 310 double CachePad[4]; // increase odds that _mutex is sole occupant of cache line 311 volatile int _Event; 312 int _nParked; 313 int _pipev[2]; 314 mutex_t _mutex[1]; 315 cond_t _cond[1]; 316 double PostPad[2]; 317 318 protected: 319 // Defining a protected ctor effectively gives us an abstract base class. 320 // That is, a PlatformEvent can never be instantiated "naked" but only 321 // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent). 322 // TODO-FIXME: make dtor private 323 ~PlatformEvent() { guarantee(0, "invariant"); } 324 PlatformEvent() { 325 int status; 326 status = os::Solaris::cond_init(_cond); 327 assert_status(status == 0, status, "cond_init"); 328 status = os::Solaris::mutex_init(_mutex); 329 assert_status(status == 0, status, "mutex_init"); 330 _Event = 0; 331 _nParked = 0; 332 _pipev[0] = _pipev[1] = -1; 333 } 334 335 public: 336 // Exercise caution using reset() and fired() -- they may require MEMBARs 337 void reset() { _Event = 0; } 338 int fired() { return _Event; } 339 void park(); 340 int park(jlong millis); 341 void unpark(); 342 }; 343 344 class PlatformParker : public CHeapObj<mtInternal> { 345 protected: 346 mutex_t _mutex[1]; 347 cond_t _cond[1]; 348 349 public: // TODO-FIXME: make dtor private 350 ~PlatformParker() { guarantee(0, "invariant"); } 351 352 public: 353 PlatformParker() { 354 int status; 355 status = os::Solaris::cond_init(_cond); 356 assert_status(status == 0, status, "cond_init"); 357 status = os::Solaris::mutex_init(_mutex); 358 assert_status(status == 0, status, "mutex_init"); 359 } 360 }; 361 362 #endif // OS_SOLARIS_VM_OS_SOLARIS_HPP