Mercurial > hg > truffle
annotate src/os/solaris/vm/os_solaris.hpp @ 1682:e5dfb3ccb88b
6969569: assert(is_static() && is_constant()) failed: illegal call to constant_value()
Summary: Add missing is_static guard.
Reviewed-by: twisti
author | kvn |
---|---|
date | Fri, 23 Jul 2010 10:07:46 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
---|---|
0 | 1 /* |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
641
diff
changeset
|
2 * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
641
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
641
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
641
diff
changeset
|
21 * questions. |
0 | 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; | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
69 typedef int lgrp_rsrc_t; |
0 | 70 typedef enum lgrp_view { |
71 LGRP_VIEW_CALLER, /* what's available to the caller */ | |
72 LGRP_VIEW_OS /* what's available to operating system */ | |
73 } lgrp_view_t; | |
74 | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
462
diff
changeset
|
75 typedef uint_t (*getisax_func_t)(uint32_t* array, uint_t n); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
462
diff
changeset
|
76 |
0 | 77 typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id); |
78 typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view); | |
79 typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie); | |
80 typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie); | |
81 typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent, | |
82 lgrp_id_t *lgrp_array, uint_t lgrp_array_size); | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
83 typedef int (*lgrp_resources_func_t)(lgrp_cookie_t cookie, lgrp_id_t lgrp, |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
84 lgrp_id_t *lgrp_array, uint_t lgrp_array_size, |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
85 lgrp_rsrc_t type); |
0 | 86 typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie); |
87 typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie); | |
88 typedef int (*meminfo_func_t)(const uint64_t inaddr[], int addr_count, | |
89 const uint_t info_req[], int info_count, | |
90 uint64_t outdata[], uint_t validity[]); | |
91 | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
462
diff
changeset
|
92 static getisax_func_t _getisax; |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
462
diff
changeset
|
93 |
0 | 94 static lgrp_home_func_t _lgrp_home; |
95 static lgrp_init_func_t _lgrp_init; | |
96 static lgrp_fini_func_t _lgrp_fini; | |
97 static lgrp_root_func_t _lgrp_root; | |
98 static lgrp_children_func_t _lgrp_children; | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
99 static lgrp_resources_func_t _lgrp_resources; |
0 | 100 static lgrp_nlgrps_func_t _lgrp_nlgrps; |
101 static lgrp_cookie_stale_func_t _lgrp_cookie_stale; | |
102 static lgrp_cookie_t _lgrp_cookie; | |
103 | |
104 static meminfo_func_t _meminfo; | |
105 | |
106 // Large Page Support--mpss. | |
107 static bool set_mpss_range(caddr_t start, size_t bytes, size_t align); | |
108 | |
109 static void init_thread_fpu_state(void); | |
110 | |
111 static void try_enable_extended_io(); | |
112 | |
113 // For signal-chaining | |
114 static unsigned long sigs; // mask of signals that have | |
115 // preinstalled signal handlers | |
116 static struct sigaction *(*get_signal_action)(int); | |
117 static struct sigaction *get_preinstalled_handler(int); | |
118 static int (*get_libjsig_version)(); | |
119 static void save_preinstalled_handler(int, struct sigaction&); | |
120 static void check_signal_handler(int sig); | |
121 // For overridable signals | |
122 static int _SIGinterrupt; // user-overridable INTERRUPT_SIGNAL | |
123 static int _SIGasync; // user-overridable ASYNC_SIGNAL | |
124 static void set_SIGinterrupt(int newsig) { _SIGinterrupt = newsig; } | |
125 static void set_SIGasync(int newsig) { _SIGasync = newsig; } | |
126 | |
127 | |
128 public: | |
129 // Large Page Support--ISM. | |
130 static bool largepage_range(char* addr, size_t size); | |
131 | |
132 static int SIGinterrupt() { return _SIGinterrupt; } | |
133 static int SIGasync() { return _SIGasync; } | |
134 static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo | |
135 | |
136 static bool valid_stack_address(Thread* thread, address sp); | |
137 static bool valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect); | |
138 static ucontext_t* get_valid_uc_in_signal_handler(Thread* thread, | |
139 ucontext_t* uc); | |
140 | |
141 static ExtendedPC ucontext_get_ExtendedPC(ucontext_t* uc); | |
142 static intptr_t* ucontext_get_sp(ucontext_t* uc); | |
143 // ucontext_get_fp() is only used by Solaris X86 (see note below) | |
144 static intptr_t* ucontext_get_fp(ucontext_t* uc); | |
145 | |
146 // For Analyzer Forte AsyncGetCallTrace profiling support: | |
147 // Parameter ret_fp is only used by Solaris X86. | |
148 // | |
149 // We should have different declarations of this interface in | |
150 // os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file | |
151 // provides extensions to the os class and not the Solaris class. | |
152 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc, | |
153 intptr_t** ret_sp, intptr_t** ret_fp); | |
154 | |
155 static void hotspot_sigmask(Thread* thread); | |
156 | |
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 char* mmap_chunk(char *addr, size_t size, int flags, int prot); | |
60
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
167 static char* anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed); |
0 | 168 static bool mpss_sanity_check(bool warn, size_t * page_size); |
169 static bool ism_sanity_check (bool warn, size_t * page_size); | |
170 | |
171 // Workaround for 4352906. thr_stksegment sometimes returns | |
172 // a bad value for the primordial thread's stack base when | |
173 // it is called more than one time. | |
174 // Workaround is to cache the initial value to avoid further | |
175 // calls to thr_stksegment. | |
176 // It appears that someone (Hotspot?) is trashing the user's | |
177 // proc_t structure (note that this is a system struct). | |
178 static address _main_stack_base; | |
179 | |
180 public: | |
181 static void libthread_init(); | |
182 static void synchronization_init(); | |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
196
diff
changeset
|
183 static bool liblgrp_init(); |
0 | 184 // Load miscellaneous symbols. |
185 static void misc_sym_init(); | |
186 // This boolean allows users to forward their own non-matching signals | |
187 // to JVM_handle_solaris_signal, harmlessly. | |
188 static bool signal_handlers_are_installed; | |
189 | |
190 static void signal_sets_init(); | |
191 static void install_signal_handlers(); | |
192 static void set_signal_handler(int sig, bool set_installed, bool oktochain); | |
193 static void init_signal_mem(); | |
194 static bool is_sig_ignored(int sig); | |
195 static void set_our_sigflags(int, int); | |
196 static int get_our_sigflags(int); | |
197 | |
198 // For signal-chaining | |
199 static bool libjsig_is_loaded; // libjsig that interposes sigaction(), | |
200 // signal(), sigset() is loaded | |
201 static struct sigaction *get_chained_signal_action(int sig); | |
202 static bool chained_handler(int sig, siginfo_t *siginfo, void *context); | |
203 | |
204 // The following allow us to link against both the old and new libthread (2.8) | |
205 // and exploit the new libthread functionality if available. | |
206 | |
207 static bool T2_libthread() { return _T2_libthread; } | |
208 static void set_T2_libthread(bool T2_libthread) { _T2_libthread = T2_libthread; } | |
209 | |
210 static int thr_getstate(thread_t tid, int *flag, unsigned *lwp, stack_t *ss, gregset_t rs) | |
211 { return _thr_getstate(tid, flag, lwp, ss, rs); } | |
212 static void set_thr_getstate(int_fnP_thread_t_iP_uP_stack_tP_gregset_t func) | |
213 { _thr_getstate = func; } | |
214 | |
215 static int thr_setstate(thread_t tid, int flag, gregset_t rs) { return _thr_setstate(tid, flag, rs); } | |
216 static void set_thr_setstate(int_fnP_thread_t_i_gregset_t func) { _thr_setstate = func; } | |
217 | |
218 static int thr_setmutator(thread_t tid, int enabled) { return _thr_setmutator(tid, enabled); } | |
219 static void set_thr_setmutator(int_fnP_thread_t_i func) { _thr_setmutator = func; } | |
220 | |
221 static int thr_suspend_mutator(thread_t tid) { return _thr_suspend_mutator(tid); } | |
222 static void set_thr_suspend_mutator(int_fnP_thread_t func) { _thr_suspend_mutator = func; } | |
223 | |
224 static int thr_continue_mutator(thread_t tid) { return _thr_continue_mutator(tid); } | |
225 static void set_thr_continue_mutator(int_fnP_thread_t func) { _thr_continue_mutator = func; } | |
226 | |
227 // Allows us to switch between lwp and thread -based synchronization | |
228 static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); } | |
229 static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); } | |
230 static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); } | |
231 static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); } | |
232 static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); } | |
233 static int mutex_scope() { return _mutex_scope; } | |
234 | |
235 static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; } | |
236 static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; } | |
237 static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; } | |
238 static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; } | |
239 static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; } | |
240 static void set_mutex_scope(int scope) { _mutex_scope = scope; } | |
241 | |
242 static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst) | |
243 { return _cond_timedwait(cv, mx, abst); } | |
244 static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); } | |
245 static int cond_signal(cond_t *cv) { return _cond_signal(cv); } | |
246 static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); } | |
247 static int cond_init(cond_t *cv) { return _cond_init(cv, os::Solaris::cond_scope(), NULL); } | |
248 static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); } | |
249 static int cond_scope() { return _cond_scope; } | |
250 | |
251 static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func) | |
252 { _cond_timedwait = func; } | |
253 static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; } | |
254 static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; } | |
255 static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; } | |
256 static void set_cond_init(int_fnP_cond_tP_i_vP func) { _cond_init = func; } | |
257 static void set_cond_destroy(int_fnP_cond_tP func) { _cond_destroy = func; } | |
258 static void set_cond_scope(int scope) { _cond_scope = scope; } | |
259 | |
260 static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; } | |
261 static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; } | |
262 static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; } | |
263 static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; } | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
264 static void set_lgrp_children(lgrp_children_func_t func) { _lgrp_children = func; } |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
265 static void set_lgrp_resources(lgrp_resources_func_t func) { _lgrp_resources = func; } |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
266 static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func) { _lgrp_nlgrps = func; } |
0 | 267 static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; } |
268 static void set_lgrp_cookie(lgrp_cookie_t cookie) { _lgrp_cookie = cookie; } | |
269 | |
270 static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; } | |
271 static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; } | |
272 static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; } | |
273 static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; }; | |
274 static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent, | |
275 lgrp_id_t *lgrp_array, uint_t lgrp_array_size) { | |
276 return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1; | |
277 } | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
278 static int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp, |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
279 lgrp_id_t *lgrp_array, uint_t lgrp_array_size, |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
280 lgrp_rsrc_t type) { |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
281 return _lgrp_resources != NULL ? _lgrp_resources(cookie, lgrp, lgrp_array, lgrp_array_size, type) : -1; |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
282 } |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
60
diff
changeset
|
283 |
0 | 284 static int lgrp_nlgrps(lgrp_cookie_t cookie) { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; } |
285 static int lgrp_cookie_stale(lgrp_cookie_t cookie) { | |
286 return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1; | |
287 } | |
288 static lgrp_cookie_t lgrp_cookie() { return _lgrp_cookie; } | |
289 | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
462
diff
changeset
|
290 static bool supports_getisax() { return _getisax != NULL; } |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
462
diff
changeset
|
291 static uint_t getisax(uint32_t* array, uint_t n); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
462
diff
changeset
|
292 |
0 | 293 static void set_meminfo(meminfo_func_t func) { _meminfo = func; } |
294 static int meminfo (const uint64_t inaddr[], int addr_count, | |
295 const uint_t info_req[], int info_count, | |
296 uint64_t outdata[], uint_t validity[]) { | |
297 return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count, | |
298 outdata, validity) : -1; | |
299 } | |
300 | |
301 enum { | |
302 clear_interrupted = true | |
303 }; | |
304 static void setup_interruptible(JavaThread* thread); | |
305 static void setup_interruptible_already_blocked(JavaThread* thread); | |
306 static JavaThread* setup_interruptible(); | |
307 static void cleanup_interruptible(JavaThread* thread); | |
308 | |
309 // perf counter incrementers used by _INTERRUPTIBLE | |
310 | |
311 static void bump_interrupted_before_count(); | |
312 static void bump_interrupted_during_count(); | |
313 | |
314 #ifdef ASSERT | |
315 static JavaThread* setup_interruptible_native(); | |
316 static void cleanup_interruptible_native(JavaThread* thread); | |
317 #endif | |
318 | |
319 static sigset_t* unblocked_signals(); | |
320 static sigset_t* vm_signals(); | |
321 static sigset_t* allowdebug_blocked_signals(); | |
322 | |
323 // %%% Following should be promoted to os.hpp: | |
324 // Trace number of created threads | |
325 static jint _os_thread_limit; | |
326 static volatile jint _os_thread_count; | |
327 | |
328 // Minimum stack size a thread can be created with (allowing | |
329 // the VM to completely create the thread and enter user code) | |
330 | |
331 static size_t min_stack_allowed; | |
332 | |
333 // Stack overflow handling | |
334 | |
335 static int max_register_window_saves_before_flushing(); | |
336 | |
337 // Stack repair handling | |
338 | |
339 // none present | |
340 | |
341 }; | |
342 | |
343 class PlatformEvent : public CHeapObj { | |
344 private: | |
345 double CachePad [4] ; // increase odds that _mutex is sole occupant of cache line | |
346 volatile int _Event ; | |
347 int _nParked ; | |
348 int _pipev [2] ; | |
349 mutex_t _mutex [1] ; | |
350 cond_t _cond [1] ; | |
351 double PostPad [2] ; | |
352 | |
353 protected: | |
354 // Defining a protected ctor effectively gives us an abstract base class. | |
355 // That is, a PlatformEvent can never be instantiated "naked" but only | |
356 // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent). | |
357 // TODO-FIXME: make dtor private | |
358 ~PlatformEvent() { guarantee (0, "invariant") ; } | |
359 PlatformEvent() { | |
360 int status; | |
361 status = os::Solaris::cond_init(_cond); | |
362 assert_status(status == 0, status, "cond_init"); | |
363 status = os::Solaris::mutex_init(_mutex); | |
364 assert_status(status == 0, status, "mutex_init"); | |
365 _Event = 0 ; | |
366 _nParked = 0 ; | |
367 _pipev[0] = _pipev[1] = -1 ; | |
368 } | |
369 | |
370 public: | |
371 // Exercise caution using reset() and fired() -- they may require MEMBARs | |
372 void reset() { _Event = 0 ; } | |
373 int fired() { return _Event; } | |
374 void park () ; | |
375 int park (jlong millis) ; | |
376 int TryPark () ; | |
377 void unpark () ; | |
378 } ; | |
379 | |
380 class PlatformParker : public CHeapObj { | |
381 protected: | |
382 mutex_t _mutex [1] ; | |
383 cond_t _cond [1] ; | |
384 | |
385 public: // TODO-FIXME: make dtor private | |
386 ~PlatformParker() { guarantee (0, "invariant") ; } | |
387 | |
388 public: | |
389 PlatformParker() { | |
390 int status; | |
391 status = os::Solaris::cond_init(_cond); | |
392 assert_status(status == 0, status, "cond_init"); | |
393 status = os::Solaris::mutex_init(_mutex); | |
394 assert_status(status == 0, status, "mutex_init"); | |
395 } | |
396 } ; |