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comparison src/os/solaris/vm/os_solaris.hpp @ 0:a61af66fc99e jdk7-b24

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date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 // Solaris_OS defines the interface to Solaris operating systems
26
27 class Solaris {
28 friend class os;
29
30 private:
31
32 // Support for "new" libthread APIs for getting & setting thread context (2.8)
33 #define TRS_VALID 0
34 #define TRS_NONVOLATILE 1
35 #define TRS_LWPID 2
36 #define TRS_INVALID 3
37
38 // _T2_libthread is true if we believe we are running with the newer
39 // SunSoft lib/lwp/libthread: default Solaris 9, available Solaris 8
40 // which is a lightweight libthread that also supports all T1
41 static bool _T2_libthread;
42 // These refer to new libthread interface functions
43 // They get intialized if we dynamically detect new libthread
44 static int_fnP_thread_t_iP_uP_stack_tP_gregset_t _thr_getstate;
45 static int_fnP_thread_t_i_gregset_t _thr_setstate;
46 static int_fnP_thread_t_i _thr_setmutator;
47 static int_fnP_thread_t _thr_suspend_mutator;
48 static int_fnP_thread_t _thr_continue_mutator;
49 // libthread_init sets the above, if the new functionality is detected
50
51 // initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization
52 static int_fnP_mutex_tP _mutex_lock;
53 static int_fnP_mutex_tP _mutex_trylock;
54 static int_fnP_mutex_tP _mutex_unlock;
55 static int_fnP_mutex_tP_i_vP _mutex_init;
56 static int_fnP_mutex_tP _mutex_destroy;
57 static int _mutex_scope;
58
59 static int_fnP_cond_tP_mutex_tP_timestruc_tP _cond_timedwait;
60 static int_fnP_cond_tP_mutex_tP _cond_wait;
61 static int_fnP_cond_tP _cond_signal;
62 static int_fnP_cond_tP _cond_broadcast;
63 static int_fnP_cond_tP_i_vP _cond_init;
64 static int_fnP_cond_tP _cond_destroy;
65 static int _cond_scope;
66
67 typedef uintptr_t lgrp_cookie_t;
68 typedef id_t lgrp_id_t;
69 typedef enum lgrp_view {
70 LGRP_VIEW_CALLER, /* what's available to the caller */
71 LGRP_VIEW_OS /* what's available to operating system */
72 } lgrp_view_t;
73
74 typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id);
75 typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view);
76 typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie);
77 typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie);
78 typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent,
79 lgrp_id_t *lgrp_array, uint_t lgrp_array_size);
80 typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie);
81 typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie);
82 typedef int (*meminfo_func_t)(const uint64_t inaddr[], int addr_count,
83 const uint_t info_req[], int info_count,
84 uint64_t outdata[], uint_t validity[]);
85
86 static lgrp_home_func_t _lgrp_home;
87 static lgrp_init_func_t _lgrp_init;
88 static lgrp_fini_func_t _lgrp_fini;
89 static lgrp_root_func_t _lgrp_root;
90 static lgrp_children_func_t _lgrp_children;
91 static lgrp_nlgrps_func_t _lgrp_nlgrps;
92 static lgrp_cookie_stale_func_t _lgrp_cookie_stale;
93 static lgrp_cookie_t _lgrp_cookie;
94
95 static meminfo_func_t _meminfo;
96
97 // Large Page Support--mpss.
98 static bool set_mpss_range(caddr_t start, size_t bytes, size_t align);
99
100 static void init_thread_fpu_state(void);
101
102 static void try_enable_extended_io();
103
104 // For signal-chaining
105 static unsigned long sigs; // mask of signals that have
106 // preinstalled signal handlers
107 static struct sigaction *(*get_signal_action)(int);
108 static struct sigaction *get_preinstalled_handler(int);
109 static int (*get_libjsig_version)();
110 static void save_preinstalled_handler(int, struct sigaction&);
111 static void check_signal_handler(int sig);
112
113 // For overridable signals
114 static int _SIGinterrupt; // user-overridable INTERRUPT_SIGNAL
115 static int _SIGasync; // user-overridable ASYNC_SIGNAL
116 static void set_SIGinterrupt(int newsig) { _SIGinterrupt = newsig; }
117 static void set_SIGasync(int newsig) { _SIGasync = newsig; }
118
119
120 public:
121 // Large Page Support--ISM.
122 static bool largepage_range(char* addr, size_t size);
123
124 static int SIGinterrupt() { return _SIGinterrupt; }
125 static int SIGasync() { return _SIGasync; }
126 static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo
127
128 static bool valid_stack_address(Thread* thread, address sp);
129 static bool valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect);
130 static ucontext_t* get_valid_uc_in_signal_handler(Thread* thread,
131 ucontext_t* uc);
132
133 static ExtendedPC ucontext_get_ExtendedPC(ucontext_t* uc);
134 static intptr_t* ucontext_get_sp(ucontext_t* uc);
135 // ucontext_get_fp() is only used by Solaris X86 (see note below)
136 static intptr_t* ucontext_get_fp(ucontext_t* uc);
137
138 // For Analyzer Forte AsyncGetCallTrace profiling support:
139 // Parameter ret_fp is only used by Solaris X86.
140 //
141 // We should have different declarations of this interface in
142 // os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file
143 // provides extensions to the os class and not the Solaris class.
144 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc,
145 intptr_t** ret_sp, intptr_t** ret_fp);
146
147 static void hotspot_sigmask(Thread* thread);
148
149 protected:
150 // Solaris-specific interface goes here
151 static julong available_memory();
152 static julong physical_memory() { return _physical_memory; }
153 static julong _physical_memory;
154 static void initialize_system_info();
155 static int _dev_zero_fd;
156 static int get_dev_zero_fd() { return _dev_zero_fd; }
157 static void set_dev_zero_fd(int fd) { _dev_zero_fd = fd; }
158 static char* mmap_chunk(char *addr, size_t size, int flags, int prot);
159 static bool mpss_sanity_check(bool warn, size_t * page_size);
160 static bool ism_sanity_check (bool warn, size_t * page_size);
161
162 // Workaround for 4352906. thr_stksegment sometimes returns
163 // a bad value for the primordial thread's stack base when
164 // it is called more than one time.
165 // Workaround is to cache the initial value to avoid further
166 // calls to thr_stksegment.
167 // It appears that someone (Hotspot?) is trashing the user's
168 // proc_t structure (note that this is a system struct).
169 static address _main_stack_base;
170
171 public:
172 static void libthread_init();
173 static void synchronization_init();
174 static void liblgrp_init();
175 // Load miscellaneous symbols.
176 static void misc_sym_init();
177 // This boolean allows users to forward their own non-matching signals
178 // to JVM_handle_solaris_signal, harmlessly.
179 static bool signal_handlers_are_installed;
180
181 static void signal_sets_init();
182 static void install_signal_handlers();
183 static void set_signal_handler(int sig, bool set_installed, bool oktochain);
184 static void init_signal_mem();
185 static bool is_sig_ignored(int sig);
186 static void set_our_sigflags(int, int);
187 static int get_our_sigflags(int);
188
189 // For signal-chaining
190 static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
191 // signal(), sigset() is loaded
192 static struct sigaction *get_chained_signal_action(int sig);
193 static bool chained_handler(int sig, siginfo_t *siginfo, void *context);
194
195 // The following allow us to link against both the old and new libthread (2.8)
196 // and exploit the new libthread functionality if available.
197
198 static bool T2_libthread() { return _T2_libthread; }
199 static void set_T2_libthread(bool T2_libthread) { _T2_libthread = T2_libthread; }
200
201 static int thr_getstate(thread_t tid, int *flag, unsigned *lwp, stack_t *ss, gregset_t rs)
202 { return _thr_getstate(tid, flag, lwp, ss, rs); }
203 static void set_thr_getstate(int_fnP_thread_t_iP_uP_stack_tP_gregset_t func)
204 { _thr_getstate = func; }
205
206 static int thr_setstate(thread_t tid, int flag, gregset_t rs) { return _thr_setstate(tid, flag, rs); }
207 static void set_thr_setstate(int_fnP_thread_t_i_gregset_t func) { _thr_setstate = func; }
208
209 static int thr_setmutator(thread_t tid, int enabled) { return _thr_setmutator(tid, enabled); }
210 static void set_thr_setmutator(int_fnP_thread_t_i func) { _thr_setmutator = func; }
211
212 static int thr_suspend_mutator(thread_t tid) { return _thr_suspend_mutator(tid); }
213 static void set_thr_suspend_mutator(int_fnP_thread_t func) { _thr_suspend_mutator = func; }
214
215 static int thr_continue_mutator(thread_t tid) { return _thr_continue_mutator(tid); }
216 static void set_thr_continue_mutator(int_fnP_thread_t func) { _thr_continue_mutator = func; }
217
218 // Allows us to switch between lwp and thread -based synchronization
219 static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); }
220 static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); }
221 static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); }
222 static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); }
223 static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); }
224 static int mutex_scope() { return _mutex_scope; }
225
226 static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; }
227 static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; }
228 static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; }
229 static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; }
230 static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; }
231 static void set_mutex_scope(int scope) { _mutex_scope = scope; }
232
233 static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst)
234 { return _cond_timedwait(cv, mx, abst); }
235 static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); }
236 static int cond_signal(cond_t *cv) { return _cond_signal(cv); }
237 static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); }
238 static int cond_init(cond_t *cv) { return _cond_init(cv, os::Solaris::cond_scope(), NULL); }
239 static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); }
240 static int cond_scope() { return _cond_scope; }
241
242 static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func)
243 { _cond_timedwait = func; }
244 static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; }
245 static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; }
246 static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; }
247 static void set_cond_init(int_fnP_cond_tP_i_vP func) { _cond_init = func; }
248 static void set_cond_destroy(int_fnP_cond_tP func) { _cond_destroy = func; }
249 static void set_cond_scope(int scope) { _cond_scope = scope; }
250
251 static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; }
252 static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; }
253 static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; }
254 static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; }
255 static void set_lgrp_children(lgrp_children_func_t func) { _lgrp_children = func; }
256 static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func) { _lgrp_nlgrps = func; }
257 static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; }
258 static void set_lgrp_cookie(lgrp_cookie_t cookie) { _lgrp_cookie = cookie; }
259
260 static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; }
261 static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; }
262 static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; }
263 static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; };
264 static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent,
265 lgrp_id_t *lgrp_array, uint_t lgrp_array_size) {
266 return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1;
267 }
268 static int lgrp_nlgrps(lgrp_cookie_t cookie) { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; }
269 static int lgrp_cookie_stale(lgrp_cookie_t cookie) {
270 return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1;
271 }
272 static lgrp_cookie_t lgrp_cookie() { return _lgrp_cookie; }
273
274 static void set_meminfo(meminfo_func_t func) { _meminfo = func; }
275 static int meminfo (const uint64_t inaddr[], int addr_count,
276 const uint_t info_req[], int info_count,
277 uint64_t outdata[], uint_t validity[]) {
278 return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count,
279 outdata, validity) : -1;
280 }
281
282 enum {
283 clear_interrupted = true
284 };
285 static void setup_interruptible(JavaThread* thread);
286 static void setup_interruptible_already_blocked(JavaThread* thread);
287 static JavaThread* setup_interruptible();
288 static void cleanup_interruptible(JavaThread* thread);
289
290 // perf counter incrementers used by _INTERRUPTIBLE
291
292 static void bump_interrupted_before_count();
293 static void bump_interrupted_during_count();
294
295 #ifdef ASSERT
296 static JavaThread* setup_interruptible_native();
297 static void cleanup_interruptible_native(JavaThread* thread);
298 #endif
299
300 static sigset_t* unblocked_signals();
301 static sigset_t* vm_signals();
302 static sigset_t* allowdebug_blocked_signals();
303
304 // %%% Following should be promoted to os.hpp:
305 // Trace number of created threads
306 static jint _os_thread_limit;
307 static volatile jint _os_thread_count;
308
309 // Minimum stack size a thread can be created with (allowing
310 // the VM to completely create the thread and enter user code)
311
312 static size_t min_stack_allowed;
313
314 // Stack overflow handling
315
316 static int max_register_window_saves_before_flushing();
317
318 // Stack repair handling
319
320 // none present
321
322 };
323
324 class PlatformEvent : public CHeapObj {
325 private:
326 double CachePad [4] ; // increase odds that _mutex is sole occupant of cache line
327 volatile int _Event ;
328 int _nParked ;
329 int _pipev [2] ;
330 mutex_t _mutex [1] ;
331 cond_t _cond [1] ;
332 double PostPad [2] ;
333
334 protected:
335 // Defining a protected ctor effectively gives us an abstract base class.
336 // That is, a PlatformEvent can never be instantiated "naked" but only
337 // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent).
338 // TODO-FIXME: make dtor private
339 ~PlatformEvent() { guarantee (0, "invariant") ; }
340 PlatformEvent() {
341 int status;
342 status = os::Solaris::cond_init(_cond);
343 assert_status(status == 0, status, "cond_init");
344 status = os::Solaris::mutex_init(_mutex);
345 assert_status(status == 0, status, "mutex_init");
346 _Event = 0 ;
347 _nParked = 0 ;
348 _pipev[0] = _pipev[1] = -1 ;
349 }
350
351 public:
352 // Exercise caution using reset() and fired() -- they may require MEMBARs
353 void reset() { _Event = 0 ; }
354 int fired() { return _Event; }
355 void park () ;
356 int park (jlong millis) ;
357 int TryPark () ;
358 void unpark () ;
359 } ;
360
361 class PlatformParker : public CHeapObj {
362 protected:
363 mutex_t _mutex [1] ;
364 cond_t _cond [1] ;
365
366 public: // TODO-FIXME: make dtor private
367 ~PlatformParker() { guarantee (0, "invariant") ; }
368
369 public:
370 PlatformParker() {
371 int status;
372 status = os::Solaris::cond_init(_cond);
373 assert_status(status == 0, status, "cond_init");
374 status = os::Solaris::mutex_init(_mutex);
375 assert_status(status == 0, status, "mutex_init");
376 }
377 } ;