1 /*
2 * Copyright (c) 1997, 2017, 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 *
171 // calls to thr_stksegment.
172 // It appears that someone (Hotspot?) is trashing the user's
173 // proc_t structure (note that this is a system struct).
174 static address _main_stack_base;
175
176 static void print_distro_info(outputStream* st);
177 static void print_libversion_info(outputStream* st);
178
179 public:
180 static void libthread_init();
181 static void synchronization_init();
182 static bool liblgrp_init();
183 // This boolean allows users to forward their own non-matching signals
184 // to JVM_handle_solaris_signal, harmlessly.
185 static bool signal_handlers_are_installed;
186
187 static void signal_sets_init();
188 static void install_signal_handlers();
189 static void set_signal_handler(int sig, bool set_installed, bool oktochain);
190 static void init_signal_mem();
191 static bool is_sig_ignored(int sig);
192 static void set_our_sigflags(int, int);
193 static int get_our_sigflags(int);
194
195 // For signal-chaining
196 static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
197 // signal(), sigset() is loaded
198 static struct sigaction *get_chained_signal_action(int sig);
199 static bool chained_handler(int sig, siginfo_t *siginfo, void *context);
200
201 // Allows us to switch between lwp and thread -based synchronization
202 static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); }
203 static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); }
204 static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); }
205 static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); }
206 static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); }
207 static int mutex_scope() { return _mutex_scope; }
208
209 static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; }
210 static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; }
211 static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; }
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1 /*
2 * Copyright (c) 1997, 2018, 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 *
171 // calls to thr_stksegment.
172 // It appears that someone (Hotspot?) is trashing the user's
173 // proc_t structure (note that this is a system struct).
174 static address _main_stack_base;
175
176 static void print_distro_info(outputStream* st);
177 static void print_libversion_info(outputStream* st);
178
179 public:
180 static void libthread_init();
181 static void synchronization_init();
182 static bool liblgrp_init();
183 // This boolean allows users to forward their own non-matching signals
184 // to JVM_handle_solaris_signal, harmlessly.
185 static bool signal_handlers_are_installed;
186
187 static void signal_sets_init();
188 static void install_signal_handlers();
189 static void set_signal_handler(int sig, bool set_installed, bool oktochain);
190 static void init_signal_mem();
191 static void set_our_sigflags(int, int);
192 static int get_our_sigflags(int);
193
194 // For signal-chaining
195 static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
196 // signal(), sigset() is loaded
197 static struct sigaction *get_chained_signal_action(int sig);
198 static bool chained_handler(int sig, siginfo_t *siginfo, void *context);
199
200 // Allows us to switch between lwp and thread -based synchronization
201 static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); }
202 static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); }
203 static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); }
204 static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); }
205 static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); }
206 static int mutex_scope() { return _mutex_scope; }
207
208 static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; }
209 static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; }
210 static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; }
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