--- old/src/hotspot/os/solaris/os_solaris.hpp 2020-05-01 02:29:38.528323715 -0700 +++ /dev/null 2020-03-09 18:57:19.455001459 -0700 @@ -1,363 +0,0 @@ -/* - * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - * - */ - -#ifndef OS_SOLARIS_OS_SOLARIS_HPP -#define OS_SOLARIS_OS_SOLARIS_HPP - -// Solaris_OS defines the interface to Solaris operating systems - -// see thr_setprio(3T) for the basis of these numbers -#define MinimumPriority 0 -#define NormalPriority 64 -#define MaximumPriority 127 - -// FX/60 is critical thread class/priority on T4 -#define FXCriticalPriority 60 - -// Information about the protection of the page at address '0' on this os. -static bool zero_page_read_protected() { return true; } - -class Solaris { - friend class os; - - private: - - // Support for "new" libthread APIs for getting & setting thread context (2.8) -#define TRS_VALID 0 -#define TRS_NONVOLATILE 1 -#define TRS_LWPID 2 -#define TRS_INVALID 3 - - // initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization - static int_fnP_mutex_tP _mutex_lock; - static int_fnP_mutex_tP _mutex_trylock; - static int_fnP_mutex_tP _mutex_unlock; - static int_fnP_mutex_tP_i_vP _mutex_init; - static int_fnP_mutex_tP _mutex_destroy; - static int _mutex_scope; - - static int_fnP_cond_tP_mutex_tP_timestruc_tP _cond_timedwait; - static int_fnP_cond_tP_mutex_tP _cond_wait; - static int_fnP_cond_tP _cond_signal; - static int_fnP_cond_tP _cond_broadcast; - static int_fnP_cond_tP_i_vP _cond_init; - static int_fnP_cond_tP _cond_destroy; - static int _cond_scope; - - static bool _synchronization_initialized; - - typedef uintptr_t lgrp_cookie_t; - typedef id_t lgrp_id_t; - typedef int lgrp_rsrc_t; - typedef enum lgrp_view { - LGRP_VIEW_CALLER, // what's available to the caller - LGRP_VIEW_OS // what's available to operating system - } lgrp_view_t; - - typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id); - typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view); - typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie); - typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie); - typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent, - lgrp_id_t *lgrp_array, uint_t lgrp_array_size); - typedef int (*lgrp_resources_func_t)(lgrp_cookie_t cookie, lgrp_id_t lgrp, - lgrp_id_t *lgrp_array, uint_t lgrp_array_size, - lgrp_rsrc_t type); - typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie); - typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie); - - static lgrp_home_func_t _lgrp_home; - static lgrp_init_func_t _lgrp_init; - static lgrp_fini_func_t _lgrp_fini; - static lgrp_root_func_t _lgrp_root; - static lgrp_children_func_t _lgrp_children; - static lgrp_resources_func_t _lgrp_resources; - static lgrp_nlgrps_func_t _lgrp_nlgrps; - static lgrp_cookie_stale_func_t _lgrp_cookie_stale; - static lgrp_cookie_t _lgrp_cookie; - - // Large Page Support - static bool is_valid_page_size(size_t bytes); - static size_t page_size_for_alignment(size_t alignment); - static bool setup_large_pages(caddr_t start, size_t bytes, size_t align); - - static void try_enable_extended_io(); - - static struct sigaction *(*get_signal_action)(int); - static struct sigaction *get_preinstalled_handler(int); - static int (*get_libjsig_version)(); - static void save_preinstalled_handler(int, struct sigaction&); - static void check_signal_handler(int sig); - - typedef int (*pthread_setname_np_func_t)(pthread_t, const char*); - static pthread_setname_np_func_t _pthread_setname_np; - - public: - // Large Page Support--ISM. - static bool largepage_range(char* addr, size_t size); - - static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo - - static bool valid_ucontext(Thread* thread, const ucontext_t* valid, const ucontext_t* suspect); - static const ucontext_t* get_valid_uc_in_signal_handler(Thread* thread, - const ucontext_t* uc); - - static ExtendedPC ucontext_get_ExtendedPC(const ucontext_t* uc); - static intptr_t* ucontext_get_sp(const ucontext_t* uc); - // ucontext_get_fp() is only used by Solaris X86 (see note below) - static intptr_t* ucontext_get_fp(const ucontext_t* uc); - static address ucontext_get_pc(const ucontext_t* uc); - static void ucontext_set_pc(ucontext_t* uc, address pc); - - // For Analyzer Forte AsyncGetCallTrace profiling support: - // Parameter ret_fp is only used by Solaris X86. - // - // We should have different declarations of this interface in - // os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file - // provides extensions to the os class and not the Solaris class. - static ExtendedPC fetch_frame_from_ucontext(Thread* thread, const ucontext_t* uc, - intptr_t** ret_sp, intptr_t** ret_fp); - - static bool get_frame_at_stack_banging_point(JavaThread* thread, ucontext_t* uc, frame* fr); - - static void hotspot_sigmask(Thread* thread); - - // SR_handler - static void SR_handler(Thread* thread, ucontext_t* uc); - - static void init_thread_fpu_state(void); - - protected: - // Solaris-specific interface goes here - static julong available_memory(); - static julong physical_memory() { return _physical_memory; } - static julong _physical_memory; - static void initialize_system_info(); - static int _dev_zero_fd; - static int get_dev_zero_fd() { return _dev_zero_fd; } - static void set_dev_zero_fd(int fd) { _dev_zero_fd = fd; } - static int commit_memory_impl(char* addr, size_t bytes, bool exec); - static int commit_memory_impl(char* addr, size_t bytes, - size_t alignment_hint, bool exec); - static char* mmap_chunk(char *addr, size_t size, int flags, int prot); - static char* anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed); - static bool mpss_sanity_check(bool warn, size_t * page_size); - - // Workaround for 4352906. thr_stksegment sometimes returns - // a bad value for the primordial thread's stack base when - // it is called more than one time. - // Workaround is to cache the initial value to avoid further - // calls to thr_stksegment. - // It appears that someone (Hotspot?) is trashing the user's - // proc_t structure (note that this is a system struct). - static address _main_stack_base; - - static void print_distro_info(outputStream* st); - static void print_libversion_info(outputStream* st); - - public: - static void libthread_init(); - static void synchronization_init(); - static bool liblgrp_init(); - // This boolean allows users to forward their own non-matching signals - // to JVM_handle_solaris_signal, harmlessly. - static bool signal_handlers_are_installed; - - static void signal_sets_init(); - static void install_signal_handlers(); - static void set_signal_handler(int sig, bool set_installed, bool oktochain); - static void init_signal_mem(); - static void set_our_sigflags(int, int); - static int get_our_sigflags(int); - - // For signal-chaining - static bool libjsig_is_loaded; // libjsig that interposes sigaction(), - // signal(), sigset() is loaded - static struct sigaction *get_chained_signal_action(int sig); - static bool chained_handler(int sig, siginfo_t *siginfo, void *context); - - // Allows us to switch between lwp and thread -based synchronization - static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); } - static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); } - static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); } - static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); } - static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); } - static int mutex_scope() { return _mutex_scope; } - - static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; } - static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; } - static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; } - static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; } - static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; } - static void set_mutex_scope(int scope) { _mutex_scope = scope; } - - static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst) { return _cond_timedwait(cv, mx, abst); } - static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); } - static int cond_signal(cond_t *cv) { return _cond_signal(cv); } - static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); } - static int cond_init(cond_t *cv) { return _cond_init(cv, os::Solaris::cond_scope(), NULL); } - static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); } - static int cond_scope() { return _cond_scope; } - - static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func) { _cond_timedwait = func; } - static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; } - static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; } - static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; } - static void set_cond_init(int_fnP_cond_tP_i_vP func) { _cond_init = func; } - static void set_cond_destroy(int_fnP_cond_tP func) { _cond_destroy = func; } - static void set_cond_scope(int scope) { _cond_scope = scope; } - - static bool synchronization_initialized() { return _synchronization_initialized; } - - static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; } - static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; } - static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; } - static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; } - static void set_lgrp_children(lgrp_children_func_t func) { _lgrp_children = func; } - static void set_lgrp_resources(lgrp_resources_func_t func) { _lgrp_resources = func; } - static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func) { _lgrp_nlgrps = func; } - static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; } - static void set_lgrp_cookie(lgrp_cookie_t cookie) { _lgrp_cookie = cookie; } - - static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; } - static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; } - static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; } - static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; } - static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent, - lgrp_id_t *lgrp_array, uint_t lgrp_array_size) { - return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1; - } - static int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp, - lgrp_id_t *lgrp_array, uint_t lgrp_array_size, - lgrp_rsrc_t type) { - return _lgrp_resources != NULL ? _lgrp_resources(cookie, lgrp, lgrp_array, lgrp_array_size, type) : -1; - } - - static int lgrp_nlgrps(lgrp_cookie_t cookie) { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; } - static int lgrp_cookie_stale(lgrp_cookie_t cookie) { - return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1; - } - static lgrp_cookie_t lgrp_cookie() { return _lgrp_cookie; } - - static sigset_t* unblocked_signals(); - static sigset_t* vm_signals(); - - // %%% Following should be promoted to os.hpp: - // Trace number of created threads - static jint _os_thread_limit; - static volatile jint _os_thread_count; - - static void correct_stack_boundaries_for_primordial_thread(Thread* thr); - - // Stack repair handling - - // none present - -}; - -class PlatformEvent : public CHeapObj { - private: - double CachePad[4]; // increase odds that _mutex is sole occupant of cache line - volatile int _Event; - int _nParked; - int _pipev[2]; - mutex_t _mutex[1]; - cond_t _cond[1]; - double PostPad[2]; - - protected: - // Defining a protected ctor effectively gives us an abstract base class. - // That is, a PlatformEvent can never be instantiated "naked" but only - // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent). - // TODO-FIXME: make dtor private - ~PlatformEvent() { guarantee(0, "invariant"); } - PlatformEvent() { - int status; - status = os::Solaris::cond_init(_cond); - assert_status(status == 0, status, "cond_init"); - status = os::Solaris::mutex_init(_mutex); - assert_status(status == 0, status, "mutex_init"); - _Event = 0; - _nParked = 0; - _pipev[0] = _pipev[1] = -1; - } - - public: - // Exercise caution using reset() and fired() -- they may require MEMBARs - void reset() { _Event = 0; } - int fired() { return _Event; } - void park(); - int park(jlong millis); - void unpark(); -}; - -class PlatformParker : public CHeapObj { - protected: - mutex_t _mutex[1]; - cond_t _cond[1]; - - public: // TODO-FIXME: make dtor private - ~PlatformParker() { guarantee(0, "invariant"); } - - public: - PlatformParker() { - int status; - status = os::Solaris::cond_init(_cond); - assert_status(status == 0, status, "cond_init"); - status = os::Solaris::mutex_init(_mutex); - assert_status(status == 0, status, "mutex_init"); - } -}; - -// Platform specific implementations that underpin VM Mutex/Monitor classes - -class PlatformMutex : public CHeapObj { - NONCOPYABLE(PlatformMutex); - - protected: - mutex_t _mutex; // Native mutex for locking - - public: - PlatformMutex(); - ~PlatformMutex(); - void lock(); - void unlock(); - bool try_lock(); -}; - -class PlatformMonitor : public PlatformMutex { - private: - cond_t _cond; // Native condition variable for blocking - - NONCOPYABLE(PlatformMonitor); - - public: - PlatformMonitor(); - ~PlatformMonitor(); - int wait(jlong millis); - void notify(); - void notify_all(); -}; - -#endif // OS_SOLARIS_OS_SOLARIS_HPP