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src/os/solaris/vm/os_solaris.hpp@6bdd6923ba16 (annotated)

src/os/solaris/vm/os_solaris.hpp

Wed, 25 Mar 2009 14:19:20 -0400

author

coleenp

date

Wed, 25 Mar 2009 14:19:20 -0400

changeset 1091

6bdd6923ba16

parent 1076

6af0a709d52b

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6541756: Reduce executable C-heap
Summary: Add executable parameters to reserve_memory and commit_memory to reduce executable memory to only the Code Heap.
Reviewed-by: xlu, kvn, acorn

duke@435	1	/*
twisti@1076	2	* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// Solaris_OS defines the interface to Solaris operating systems
duke@435	26
duke@435	27	class Solaris {
duke@435	28	friend class os;
duke@435	29
duke@435	30	private:
duke@435	31
duke@435	32	// Support for "new" libthread APIs for getting & setting thread context (2.8)
duke@435	33	#define TRS_VALID 0
duke@435	34	#define TRS_NONVOLATILE 1
duke@435	35	#define TRS_LWPID 2
duke@435	36	#define TRS_INVALID 3
duke@435	37
duke@435	38	// _T2_libthread is true if we believe we are running with the newer
duke@435	39	// SunSoft lib/lwp/libthread: default Solaris 9, available Solaris 8
duke@435	40	// which is a lightweight libthread that also supports all T1
duke@435	41	static bool _T2_libthread;
duke@435	42	// These refer to new libthread interface functions
duke@435	43	// They get intialized if we dynamically detect new libthread
duke@435	44	static int_fnP_thread_t_iP_uP_stack_tP_gregset_t _thr_getstate;
duke@435	45	static int_fnP_thread_t_i_gregset_t _thr_setstate;
duke@435	46	static int_fnP_thread_t_i _thr_setmutator;
duke@435	47	static int_fnP_thread_t _thr_suspend_mutator;
duke@435	48	static int_fnP_thread_t _thr_continue_mutator;
duke@435	49	// libthread_init sets the above, if the new functionality is detected
duke@435	50
duke@435	51	// initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization
duke@435	52	static int_fnP_mutex_tP _mutex_lock;
duke@435	53	static int_fnP_mutex_tP _mutex_trylock;
duke@435	54	static int_fnP_mutex_tP _mutex_unlock;
duke@435	55	static int_fnP_mutex_tP_i_vP _mutex_init;
duke@435	56	static int_fnP_mutex_tP _mutex_destroy;
duke@435	57	static int _mutex_scope;
duke@435	58
duke@435	59	static int_fnP_cond_tP_mutex_tP_timestruc_tP _cond_timedwait;
duke@435	60	static int_fnP_cond_tP_mutex_tP _cond_wait;
duke@435	61	static int_fnP_cond_tP _cond_signal;
duke@435	62	static int_fnP_cond_tP _cond_broadcast;
duke@435	63	static int_fnP_cond_tP_i_vP _cond_init;
duke@435	64	static int_fnP_cond_tP _cond_destroy;
duke@435	65	static int _cond_scope;
duke@435	66
duke@435	67	typedef uintptr_t lgrp_cookie_t;
duke@435	68	typedef id_t lgrp_id_t;
iveresov@579	69	typedef int lgrp_rsrc_t;
duke@435	70	typedef enum lgrp_view {
duke@435	71	LGRP_VIEW_CALLER, /* what's available to the caller */
duke@435	72	LGRP_VIEW_OS /* what's available to operating system */
duke@435	73	} lgrp_view_t;
duke@435	74
twisti@1076	75	typedef uint_t (*getisax_func_t)(uint32_t* array, uint_t n);
twisti@1076	76
duke@435	77	typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id);
duke@435	78	typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view);
duke@435	79	typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie);
duke@435	80	typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie);
duke@435	81	typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent,
duke@435	82	lgrp_id_t *lgrp_array, uint_t lgrp_array_size);
iveresov@579	83	typedef int (*lgrp_resources_func_t)(lgrp_cookie_t cookie, lgrp_id_t lgrp,
iveresov@579	84	lgrp_id_t *lgrp_array, uint_t lgrp_array_size,
iveresov@579	85	lgrp_rsrc_t type);
duke@435	86	typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie);
duke@435	87	typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie);
duke@435	88	typedef int (*meminfo_func_t)(const uint64_t inaddr[], int addr_count,
duke@435	89	const uint_t info_req[], int info_count,
duke@435	90	uint64_t outdata[], uint_t validity[]);
duke@435	91
twisti@1076	92	static getisax_func_t _getisax;
twisti@1076	93
duke@435	94	static lgrp_home_func_t _lgrp_home;
duke@435	95	static lgrp_init_func_t _lgrp_init;
duke@435	96	static lgrp_fini_func_t _lgrp_fini;
duke@435	97	static lgrp_root_func_t _lgrp_root;
duke@435	98	static lgrp_children_func_t _lgrp_children;
iveresov@579	99	static lgrp_resources_func_t _lgrp_resources;
duke@435	100	static lgrp_nlgrps_func_t _lgrp_nlgrps;
duke@435	101	static lgrp_cookie_stale_func_t _lgrp_cookie_stale;
duke@435	102	static lgrp_cookie_t _lgrp_cookie;
duke@435	103
duke@435	104	static meminfo_func_t _meminfo;
duke@435	105
duke@435	106	// Large Page Support--mpss.
duke@435	107	static bool set_mpss_range(caddr_t start, size_t bytes, size_t align);
duke@435	108
duke@435	109	static void init_thread_fpu_state(void);
duke@435	110
duke@435	111	static void try_enable_extended_io();
duke@435	112
duke@435	113	// For signal-chaining
duke@435	114	static unsigned long sigs; // mask of signals that have
duke@435	115	// preinstalled signal handlers
duke@435	116	static struct sigaction *(*get_signal_action)(int);
duke@435	117	static struct sigaction *get_preinstalled_handler(int);
duke@435	118	static int (*get_libjsig_version)();
duke@435	119	static void save_preinstalled_handler(int, struct sigaction&);
duke@435	120	static void check_signal_handler(int sig);
duke@435	121	// For overridable signals
duke@435	122	static int _SIGinterrupt; // user-overridable INTERRUPT_SIGNAL
duke@435	123	static int _SIGasync; // user-overridable ASYNC_SIGNAL
duke@435	124	static void set_SIGinterrupt(int newsig) { _SIGinterrupt = newsig; }
duke@435	125	static void set_SIGasync(int newsig) { _SIGasync = newsig; }
duke@435	126
duke@435	127
duke@435	128	public:
duke@435	129	// Large Page Support--ISM.
duke@435	130	static bool largepage_range(char* addr, size_t size);
duke@435	131
duke@435	132	static int SIGinterrupt() { return _SIGinterrupt; }
duke@435	133	static int SIGasync() { return _SIGasync; }
duke@435	134	static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo
duke@435	135
duke@435	136	static bool valid_stack_address(Thread* thread, address sp);
duke@435	137	static bool valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect);
duke@435	138	static ucontext_t* get_valid_uc_in_signal_handler(Thread* thread,
duke@435	139	ucontext_t* uc);
duke@435	140
duke@435	141	static ExtendedPC ucontext_get_ExtendedPC(ucontext_t* uc);
duke@435	142	static intptr_t* ucontext_get_sp(ucontext_t* uc);
duke@435	143	// ucontext_get_fp() is only used by Solaris X86 (see note below)
duke@435	144	static intptr_t* ucontext_get_fp(ucontext_t* uc);
duke@435	145
duke@435	146	// For Analyzer Forte AsyncGetCallTrace profiling support:
duke@435	147	// Parameter ret_fp is only used by Solaris X86.
duke@435	148	//
duke@435	149	// We should have different declarations of this interface in
duke@435	150	// os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file
duke@435	151	// provides extensions to the os class and not the Solaris class.
duke@435	152	static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc,
duke@435	153	intptr_t** ret_sp, intptr_t** ret_fp);
duke@435	154
duke@435	155	static void hotspot_sigmask(Thread* thread);
duke@435	156
duke@435	157	protected:
duke@435	158	// Solaris-specific interface goes here
duke@435	159	static julong available_memory();
duke@435	160	static julong physical_memory() { return _physical_memory; }
duke@435	161	static julong _physical_memory;
duke@435	162	static void initialize_system_info();
duke@435	163	static int _dev_zero_fd;
duke@435	164	static int get_dev_zero_fd() { return _dev_zero_fd; }
duke@435	165	static void set_dev_zero_fd(int fd) { _dev_zero_fd = fd; }
duke@435	166	static char* mmap_chunk(char *addr, size_t size, int flags, int prot);
sbohne@495	167	static char* anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed);
duke@435	168	static bool mpss_sanity_check(bool warn, size_t * page_size);
duke@435	169	static bool ism_sanity_check (bool warn, size_t * page_size);
duke@435	170
duke@435	171	// Workaround for 4352906. thr_stksegment sometimes returns
duke@435	172	// a bad value for the primordial thread's stack base when
duke@435	173	// it is called more than one time.
duke@435	174	// Workaround is to cache the initial value to avoid further
duke@435	175	// calls to thr_stksegment.
duke@435	176	// It appears that someone (Hotspot?) is trashing the user's
duke@435	177	// proc_t structure (note that this is a system struct).
duke@435	178	static address _main_stack_base;
duke@435	179
duke@435	180	public:
duke@435	181	static void libthread_init();
duke@435	182	static void synchronization_init();
iveresov@897	183	static bool liblgrp_init();
duke@435	184	// Load miscellaneous symbols.
duke@435	185	static void misc_sym_init();
duke@435	186	// This boolean allows users to forward their own non-matching signals
duke@435	187	// to JVM_handle_solaris_signal, harmlessly.
duke@435	188	static bool signal_handlers_are_installed;
duke@435	189
duke@435	190	static void signal_sets_init();
duke@435	191	static void install_signal_handlers();
duke@435	192	static void set_signal_handler(int sig, bool set_installed, bool oktochain);
duke@435	193	static void init_signal_mem();
duke@435	194	static bool is_sig_ignored(int sig);
duke@435	195	static void set_our_sigflags(int, int);
duke@435	196	static int get_our_sigflags(int);
duke@435	197
duke@435	198	// For signal-chaining
duke@435	199	static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
duke@435	200	// signal(), sigset() is loaded
duke@435	201	static struct sigaction *get_chained_signal_action(int sig);
duke@435	202	static bool chained_handler(int sig, siginfo_t *siginfo, void *context);
duke@435	203
duke@435	204	// The following allow us to link against both the old and new libthread (2.8)
duke@435	205	// and exploit the new libthread functionality if available.
duke@435	206
duke@435	207	static bool T2_libthread() { return _T2_libthread; }
duke@435	208	static void set_T2_libthread(bool T2_libthread) { _T2_libthread = T2_libthread; }
duke@435	209
duke@435	210	static int thr_getstate(thread_t tid, int *flag, unsigned *lwp, stack_t *ss, gregset_t rs)
duke@435	211	{ return _thr_getstate(tid, flag, lwp, ss, rs); }
duke@435	212	static void set_thr_getstate(int_fnP_thread_t_iP_uP_stack_tP_gregset_t func)
duke@435	213	{ _thr_getstate = func; }
duke@435	214
duke@435	215	static int thr_setstate(thread_t tid, int flag, gregset_t rs) { return _thr_setstate(tid, flag, rs); }
duke@435	216	static void set_thr_setstate(int_fnP_thread_t_i_gregset_t func) { _thr_setstate = func; }
duke@435	217
duke@435	218	static int thr_setmutator(thread_t tid, int enabled) { return _thr_setmutator(tid, enabled); }
duke@435	219	static void set_thr_setmutator(int_fnP_thread_t_i func) { _thr_setmutator = func; }
duke@435	220
duke@435	221	static int thr_suspend_mutator(thread_t tid) { return _thr_suspend_mutator(tid); }
duke@435	222	static void set_thr_suspend_mutator(int_fnP_thread_t func) { _thr_suspend_mutator = func; }
duke@435	223
duke@435	224	static int thr_continue_mutator(thread_t tid) { return _thr_continue_mutator(tid); }
duke@435	225	static void set_thr_continue_mutator(int_fnP_thread_t func) { _thr_continue_mutator = func; }
duke@435	226
duke@435	227	// Allows us to switch between lwp and thread -based synchronization
duke@435	228	static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); }
duke@435	229	static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); }
duke@435	230	static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); }
duke@435	231	static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); }
duke@435	232	static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); }
duke@435	233	static int mutex_scope() { return _mutex_scope; }
duke@435	234
duke@435	235	static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; }
duke@435	236	static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; }
duke@435	237	static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; }
duke@435	238	static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; }
duke@435	239	static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; }
duke@435	240	static void set_mutex_scope(int scope) { _mutex_scope = scope; }
duke@435	241
duke@435	242	static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst)
duke@435	243	{ return _cond_timedwait(cv, mx, abst); }
duke@435	244	static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); }
duke@435	245	static int cond_signal(cond_t *cv) { return _cond_signal(cv); }
duke@435	246	static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); }
duke@435	247	static int cond_init(cond_t *cv) { return _cond_init(cv, os::Solaris::cond_scope(), NULL); }
duke@435	248	static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); }
duke@435	249	static int cond_scope() { return _cond_scope; }
duke@435	250
duke@435	251	static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func)
duke@435	252	{ _cond_timedwait = func; }
duke@435	253	static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; }
duke@435	254	static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; }
duke@435	255	static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; }
duke@435	256	static void set_cond_init(int_fnP_cond_tP_i_vP func) { _cond_init = func; }
duke@435	257	static void set_cond_destroy(int_fnP_cond_tP func) { _cond_destroy = func; }
duke@435	258	static void set_cond_scope(int scope) { _cond_scope = scope; }
duke@435	259
duke@435	260	static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; }
duke@435	261	static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; }
duke@435	262	static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; }
duke@435	263	static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; }
iveresov@579	264	static void set_lgrp_children(lgrp_children_func_t func) { _lgrp_children = func; }
iveresov@579	265	static void set_lgrp_resources(lgrp_resources_func_t func) { _lgrp_resources = func; }
iveresov@579	266	static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func) { _lgrp_nlgrps = func; }
duke@435	267	static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; }
duke@435	268	static void set_lgrp_cookie(lgrp_cookie_t cookie) { _lgrp_cookie = cookie; }
duke@435	269
duke@435	270	static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; }
duke@435	271	static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; }
duke@435	272	static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; }
duke@435	273	static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; };
duke@435	274	static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent,
duke@435	275	lgrp_id_t *lgrp_array, uint_t lgrp_array_size) {
duke@435	276	return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1;
duke@435	277	}
iveresov@579	278	static int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp,
iveresov@579	279	lgrp_id_t *lgrp_array, uint_t lgrp_array_size,
iveresov@579	280	lgrp_rsrc_t type) {
iveresov@579	281	return _lgrp_resources != NULL ? _lgrp_resources(cookie, lgrp, lgrp_array, lgrp_array_size, type) : -1;
iveresov@579	282	}
iveresov@579	283
duke@435	284	static int lgrp_nlgrps(lgrp_cookie_t cookie) { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; }
duke@435	285	static int lgrp_cookie_stale(lgrp_cookie_t cookie) {
duke@435	286	return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1;
duke@435	287	}
duke@435	288	static lgrp_cookie_t lgrp_cookie() { return _lgrp_cookie; }
duke@435	289
twisti@1076	290	static bool supports_getisax() { return _getisax != NULL; }
twisti@1076	291	static uint_t getisax(uint32_t* array, uint_t n);
twisti@1076	292
duke@435	293	static void set_meminfo(meminfo_func_t func) { _meminfo = func; }
duke@435	294	static int meminfo (const uint64_t inaddr[], int addr_count,
duke@435	295	const uint_t info_req[], int info_count,
duke@435	296	uint64_t outdata[], uint_t validity[]) {
duke@435	297	return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count,
duke@435	298	outdata, validity) : -1;
duke@435	299	}
duke@435	300
duke@435	301	enum {
duke@435	302	clear_interrupted = true
duke@435	303	};
duke@435	304	static void setup_interruptible(JavaThread* thread);
duke@435	305	static void setup_interruptible_already_blocked(JavaThread* thread);
duke@435	306	static JavaThread* setup_interruptible();
duke@435	307	static void cleanup_interruptible(JavaThread* thread);
duke@435	308
duke@435	309	// perf counter incrementers used by _INTERRUPTIBLE
duke@435	310
duke@435	311	static void bump_interrupted_before_count();
duke@435	312	static void bump_interrupted_during_count();
duke@435	313
duke@435	314	#ifdef ASSERT
duke@435	315	static JavaThread* setup_interruptible_native();
duke@435	316	static void cleanup_interruptible_native(JavaThread* thread);
duke@435	317	#endif
duke@435	318
duke@435	319	static sigset_t* unblocked_signals();
duke@435	320	static sigset_t* vm_signals();
duke@435	321	static sigset_t* allowdebug_blocked_signals();
duke@435	322
duke@435	323	// %%% Following should be promoted to os.hpp:
duke@435	324	// Trace number of created threads
duke@435	325	static jint _os_thread_limit;
duke@435	326	static volatile jint _os_thread_count;
duke@435	327
duke@435	328	// Minimum stack size a thread can be created with (allowing
duke@435	329	// the VM to completely create the thread and enter user code)
duke@435	330
duke@435	331	static size_t min_stack_allowed;
duke@435	332
duke@435	333	// Stack overflow handling
duke@435	334
duke@435	335	static int max_register_window_saves_before_flushing();
duke@435	336
duke@435	337	// Stack repair handling
duke@435	338
duke@435	339	// none present
duke@435	340
duke@435	341	};
duke@435	342
duke@435	343	class PlatformEvent : public CHeapObj {
duke@435	344	private:
duke@435	345	double CachePad [4] ; // increase odds that _mutex is sole occupant of cache line
duke@435	346	volatile int _Event ;
duke@435	347	int _nParked ;
duke@435	348	int _pipev [2] ;
duke@435	349	mutex_t _mutex [1] ;
duke@435	350	cond_t _cond [1] ;
duke@435	351	double PostPad [2] ;
duke@435	352
duke@435	353	protected:
duke@435	354	// Defining a protected ctor effectively gives us an abstract base class.
duke@435	355	// That is, a PlatformEvent can never be instantiated "naked" but only
duke@435	356	// as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent).
duke@435	357	// TODO-FIXME: make dtor private
duke@435	358	~PlatformEvent() { guarantee (0, "invariant") ; }
duke@435	359	PlatformEvent() {
duke@435	360	int status;
duke@435	361	status = os::Solaris::cond_init(_cond);
duke@435	362	assert_status(status == 0, status, "cond_init");
duke@435	363	status = os::Solaris::mutex_init(_mutex);
duke@435	364	assert_status(status == 0, status, "mutex_init");
duke@435	365	_Event = 0 ;
duke@435	366	_nParked = 0 ;
duke@435	367	_pipev[0] = _pipev[1] = -1 ;
duke@435	368	}
duke@435	369
duke@435	370	public:
duke@435	371	// Exercise caution using reset() and fired() -- they may require MEMBARs
duke@435	372	void reset() { _Event = 0 ; }
duke@435	373	int fired() { return _Event; }
duke@435	374	void park () ;
duke@435	375	int park (jlong millis) ;
duke@435	376	int TryPark () ;
duke@435	377	void unpark () ;
duke@435	378	} ;
duke@435	379
duke@435	380	class PlatformParker : public CHeapObj {
duke@435	381	protected:
duke@435	382	mutex_t _mutex [1] ;
duke@435	383	cond_t _cond [1] ;
duke@435	384
duke@435	385	public: // TODO-FIXME: make dtor private
duke@435	386	~PlatformParker() { guarantee (0, "invariant") ; }
duke@435	387
duke@435	388	public:
duke@435	389	PlatformParker() {
duke@435	390	int status;
duke@435	391	status = os::Solaris::cond_init(_cond);
duke@435	392	assert_status(status == 0, status, "cond_init");
duke@435	393	status = os::Solaris::mutex_init(_mutex);
duke@435	394	assert_status(status == 0, status, "mutex_init");
duke@435	395	}
duke@435	396	} ;