Mercurial > hg > truffle
annotate src/os/bsd/vm/os_bsd.hpp @ 14475:6c9332549827
6546236: Thread interrupt() of Thread.sleep() can be lost on Solaris due to race with signal handler
Reviewed-by: dholmes, dcubed
| author | fparain |
|---|---|
| date | Wed, 19 Feb 2014 16:22:15 +0000 |
| parents | faff125a1ead |
| children | bb9356ec5967 |
| rev | line source |
|---|---|
| 3960 | 1 /* |
|
14475
6c9332549827
6546236: Thread interrupt() of Thread.sleep() can be lost on Solaris due to race with signal handler
fparain
parents:
12809
diff
changeset
|
2 * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved. |
| 3960 | 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 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef OS_BSD_VM_OS_BSD_HPP | |
| 26 #define OS_BSD_VM_OS_BSD_HPP | |
| 27 | |
| 28 // Bsd_OS defines the interface to Bsd operating systems | |
| 29 | |
| 30 /* pthread_getattr_np comes with BsdThreads-0.9-7 on RedHat 7.1 */ | |
| 31 typedef int (*pthread_getattr_func_type) (pthread_t, pthread_attr_t *); | |
| 32 | |
| 33 #ifdef __APPLE__ | |
| 34 // Mac OS X doesn't support clock_gettime. Stub out the type, it is | |
| 35 // unused | |
| 36 typedef int clockid_t; | |
| 37 #endif | |
| 38 | |
| 39 class Bsd { | |
| 40 friend class os; | |
| 41 | |
| 42 // For signal-chaining | |
| 43 #define MAXSIGNUM 32 | |
| 44 static struct sigaction sigact[MAXSIGNUM]; // saved preinstalled sigactions | |
| 45 static unsigned int sigs; // mask of signals that have | |
| 46 // preinstalled signal handlers | |
| 47 static bool libjsig_is_loaded; // libjsig that interposes sigaction(), | |
| 48 // __sigaction(), signal() is loaded | |
| 49 static struct sigaction *(*get_signal_action)(int); | |
| 50 static struct sigaction *get_preinstalled_handler(int); | |
| 51 static void save_preinstalled_handler(int, struct sigaction&); | |
| 52 | |
| 53 static void check_signal_handler(int sig); | |
| 54 | |
| 55 // For signal flags diagnostics | |
| 56 static int sigflags[MAXSIGNUM]; | |
| 57 | |
| 58 static int (*_clock_gettime)(clockid_t, struct timespec *); | |
| 59 | |
| 60 static GrowableArray<int>* _cpu_to_node; | |
| 61 | |
| 62 protected: | |
| 63 | |
| 64 static julong _physical_memory; | |
| 65 static pthread_t _main_thread; | |
| 66 static int _page_size; | |
| 67 | |
| 68 static julong available_memory(); | |
| 69 static julong physical_memory() { return _physical_memory; } | |
| 70 static void initialize_system_info(); | |
| 71 | |
| 72 static bool supports_variable_stack_size(); | |
| 73 | |
| 74 static void rebuild_cpu_to_node_map(); | |
| 75 static GrowableArray<int>* cpu_to_node() { return _cpu_to_node; } | |
| 76 | |
| 77 static bool hugetlbfs_sanity_check(bool warn, size_t page_size); | |
| 78 | |
| 79 public: | |
| 80 | |
| 81 static void init_thread_fpu_state(); | |
| 82 static pthread_t main_thread(void) { return _main_thread; } | |
| 83 | |
| 84 static void hotspot_sigmask(Thread* thread); | |
| 85 | |
| 86 static bool is_initial_thread(void); | |
|
12809
faff125a1ead
8022616: u4 should not be used as a type for thread_id
dsamersoff
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changeset
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87 static pid_t gettid(); |
| 3960 | 88 |
| 89 static int page_size(void) { return _page_size; } | |
| 90 static void set_page_size(int val) { _page_size = val; } | |
| 91 | |
| 92 static address ucontext_get_pc(ucontext_t* uc); | |
| 93 static intptr_t* ucontext_get_sp(ucontext_t* uc); | |
| 94 static intptr_t* ucontext_get_fp(ucontext_t* uc); | |
| 95 | |
| 96 // For Analyzer Forte AsyncGetCallTrace profiling support: | |
| 97 // | |
| 98 // This interface should be declared in os_bsd_i486.hpp, but | |
| 99 // that file provides extensions to the os class and not the | |
| 100 // Bsd class. | |
| 101 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc, | |
| 102 intptr_t** ret_sp, intptr_t** ret_fp); | |
| 103 | |
| 104 // This boolean allows users to forward their own non-matching signals | |
| 105 // to JVM_handle_bsd_signal, harmlessly. | |
| 106 static bool signal_handlers_are_installed; | |
| 107 | |
| 108 static int get_our_sigflags(int); | |
| 109 static void set_our_sigflags(int, int); | |
| 110 static void signal_sets_init(); | |
| 111 static void install_signal_handlers(); | |
| 112 static void set_signal_handler(int, bool); | |
| 113 static bool is_sig_ignored(int sig); | |
| 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; | |
| 154 static numa_node_to_cpus_func_t _numa_node_to_cpus; | |
| 155 static numa_max_node_func_t _numa_max_node; | |
| 156 static numa_available_func_t _numa_available; | |
| 157 static numa_tonode_memory_func_t _numa_tonode_memory; | |
| 158 static numa_interleave_memory_func_t _numa_interleave_memory; | |
| 159 static unsigned long* _numa_all_nodes; | |
| 160 | |
| 161 static void set_sched_getcpu(sched_getcpu_func_t func) { _sched_getcpu = func; } | |
| 162 static void set_numa_node_to_cpus(numa_node_to_cpus_func_t func) { _numa_node_to_cpus = func; } | |
| 163 static void set_numa_max_node(numa_max_node_func_t func) { _numa_max_node = func; } | |
| 164 static void set_numa_available(numa_available_func_t func) { _numa_available = func; } | |
| 165 static void set_numa_tonode_memory(numa_tonode_memory_func_t func) { _numa_tonode_memory = func; } | |
| 166 static void set_numa_interleave_memory(numa_interleave_memory_func_t func) { _numa_interleave_memory = func; } | |
| 167 static void set_numa_all_nodes(unsigned long* ptr) { _numa_all_nodes = ptr; } | |
| 168 public: | |
| 169 static int sched_getcpu() { return _sched_getcpu != NULL ? _sched_getcpu() : -1; } | |
| 170 static int numa_node_to_cpus(int node, unsigned long *buffer, int bufferlen) { | |
| 171 return _numa_node_to_cpus != NULL ? _numa_node_to_cpus(node, buffer, bufferlen) : -1; | |
| 172 } | |
| 173 static int numa_max_node() { return _numa_max_node != NULL ? _numa_max_node() : -1; } | |
| 174 static int numa_available() { return _numa_available != NULL ? _numa_available() : -1; } | |
| 175 static int numa_tonode_memory(void *start, size_t size, int node) { | |
| 176 return _numa_tonode_memory != NULL ? _numa_tonode_memory(start, size, node) : -1; | |
| 177 } | |
| 178 static void numa_interleave_memory(void *start, size_t size) { | |
| 179 if (_numa_interleave_memory != NULL && _numa_all_nodes != NULL) { | |
| 180 _numa_interleave_memory(start, size, _numa_all_nodes); | |
| 181 } | |
| 182 } | |
| 183 static int get_node_by_cpu(int cpu_id); | |
| 184 }; | |
| 185 | |
| 186 | |
| 6197 | 187 class PlatformEvent : public CHeapObj<mtInternal> { |
| 3960 | 188 private: |
| 189 double CachePad [4] ; // increase odds that _mutex is sole occupant of cache line | |
| 190 volatile int _Event ; | |
| 191 volatile int _nParked ; | |
| 192 pthread_mutex_t _mutex [1] ; | |
| 193 pthread_cond_t _cond [1] ; | |
| 194 double PostPad [2] ; | |
| 195 Thread * _Assoc ; | |
| 196 | |
| 197 public: // TODO-FIXME: make dtor private | |
| 198 ~PlatformEvent() { guarantee (0, "invariant") ; } | |
| 199 | |
| 200 public: | |
| 201 PlatformEvent() { | |
| 202 int status; | |
| 203 status = pthread_cond_init (_cond, NULL); | |
| 204 assert_status(status == 0, status, "cond_init"); | |
| 205 status = pthread_mutex_init (_mutex, NULL); | |
| 206 assert_status(status == 0, status, "mutex_init"); | |
| 207 _Event = 0 ; | |
| 208 _nParked = 0 ; | |
| 209 _Assoc = NULL ; | |
| 210 } | |
| 211 | |
| 212 // Use caution with reset() and fired() -- they may require MEMBARs | |
| 213 void reset() { _Event = 0 ; } | |
| 214 int fired() { return _Event; } | |
| 215 void park () ; | |
| 216 void unpark () ; | |
| 217 int TryPark () ; | |
| 218 int park (jlong millis) ; | |
| 219 void SetAssociation (Thread * a) { _Assoc = a ; } | |
| 10405 | 220 }; |
| 3960 | 221 |
| 6197 | 222 class PlatformParker : public CHeapObj<mtInternal> { |
| 3960 | 223 protected: |
| 224 pthread_mutex_t _mutex [1] ; | |
| 225 pthread_cond_t _cond [1] ; | |
| 226 | |
| 227 public: // TODO-FIXME: make dtor private | |
| 228 ~PlatformParker() { guarantee (0, "invariant") ; } | |
| 229 | |
| 230 public: | |
| 231 PlatformParker() { | |
| 232 int status; | |
| 233 status = pthread_cond_init (_cond, NULL); | |
| 234 assert_status(status == 0, status, "cond_init"); | |
| 235 status = pthread_mutex_init (_mutex, NULL); | |
| 236 assert_status(status == 0, status, "mutex_init"); | |
| 237 } | |
| 10405 | 238 }; |
| 3960 | 239 |
| 240 #endif // OS_BSD_VM_OS_BSD_HPP |