src/os/bsd/vm/os_bsd.hpp

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   1 /*
   2  * Copyright (c) 1999, 2013, 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  *


 114 
 115   static sigset_t* unblocked_signals();
 116   static sigset_t* vm_signals();
 117   static sigset_t* allowdebug_blocked_signals();
 118 
 119   // For signal-chaining
 120   static struct sigaction *get_chained_signal_action(int sig);
 121   static bool chained_handler(int sig, siginfo_t* siginfo, void* context);
 122 
 123   // Minimum stack size a thread can be created with (allowing
 124   // the VM to completely create the thread and enter user code)
 125   static size_t min_stack_allowed;
 126 
 127   // Return default stack size or guard size for the specified thread type
 128   static size_t default_stack_size(os::ThreadType thr_type);
 129   static size_t default_guard_size(os::ThreadType thr_type);
 130 
 131   // Real-time clock functions
 132   static void clock_init(void);
 133 
 134   static inline bool supports_monotonic_clock() {
 135     return _clock_gettime != NULL;
 136   }
 137 
 138   static int clock_gettime(clockid_t clock_id, struct timespec *tp) {
 139     return _clock_gettime ? _clock_gettime(clock_id, tp) : -1;
 140   }
 141 
 142   // Stack repair handling
 143 
 144   // none present
 145 
 146   // BsdThreads work-around for 6292965
 147   static int safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime);
 148 
 149 private:
 150   typedef int (*sched_getcpu_func_t)(void);
 151   typedef int (*numa_node_to_cpus_func_t)(int node, unsigned long *buffer, int bufferlen);
 152   typedef int (*numa_max_node_func_t)(void);
 153   typedef int (*numa_available_func_t)(void);
 154   typedef int (*numa_tonode_memory_func_t)(void *start, size_t size, int node);
 155   typedef void (*numa_interleave_memory_func_t)(void *start, size_t size, unsigned long *nodemask);
 156 
 157   static sched_getcpu_func_t _sched_getcpu;


   1 /*
   2  * Copyright (c) 1999, 2014, 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  *


 114 
 115   static sigset_t* unblocked_signals();
 116   static sigset_t* vm_signals();
 117   static sigset_t* allowdebug_blocked_signals();
 118 
 119   // For signal-chaining
 120   static struct sigaction *get_chained_signal_action(int sig);
 121   static bool chained_handler(int sig, siginfo_t* siginfo, void* context);
 122 
 123   // Minimum stack size a thread can be created with (allowing
 124   // the VM to completely create the thread and enter user code)
 125   static size_t min_stack_allowed;
 126 
 127   // Return default stack size or guard size for the specified thread type
 128   static size_t default_stack_size(os::ThreadType thr_type);
 129   static size_t default_guard_size(os::ThreadType thr_type);
 130 
 131   // Real-time clock functions
 132   static void clock_init(void);
 133 




 134   static int clock_gettime(clockid_t clock_id, struct timespec *tp) {
 135     return _clock_gettime ? _clock_gettime(clock_id, tp) : -1;
 136   }
 137 
 138   // Stack repair handling
 139 
 140   // none present
 141 
 142   // BsdThreads work-around for 6292965
 143   static int safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime);
 144 
 145 private:
 146   typedef int (*sched_getcpu_func_t)(void);
 147   typedef int (*numa_node_to_cpus_func_t)(int node, unsigned long *buffer, int bufferlen);
 148   typedef int (*numa_max_node_func_t)(void);
 149   typedef int (*numa_available_func_t)(void);
 150   typedef int (*numa_tonode_memory_func_t)(void *start, size_t size, int node);
 151   typedef void (*numa_interleave_memory_func_t)(void *start, size_t size, unsigned long *nodemask);
 152 
 153   static sched_getcpu_func_t _sched_getcpu;