Mercurial > hg > truffle
annotate src/share/vm/runtime/os.hpp @ 12258:69f26e8e09f9
8024760: add more types, fields and constants to VMStructs
Reviewed-by: kvn, coleenp
author | twisti |
---|---|
date | Fri, 13 Sep 2013 16:55:44 -0700 |
parents | c636758ea616 |
children | da051ce490eb |
rev | line source |
---|---|
0 | 1 /* |
7623
203f64878aab
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
7433
diff
changeset
|
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1320
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1320
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1320
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_OS_HPP |
26 #define SHARE_VM_RUNTIME_OS_HPP | |
27 | |
28 #include "jvmtifiles/jvmti.h" | |
29 #include "runtime/atomic.hpp" | |
30 #include "runtime/extendedPC.hpp" | |
31 #include "runtime/handles.hpp" | |
32 #include "utilities/top.hpp" | |
33 #ifdef TARGET_OS_FAMILY_linux | |
34 # include "jvm_linux.h" | |
11151 | 35 # include <setjmp.h> |
1972 | 36 #endif |
37 #ifdef TARGET_OS_FAMILY_solaris | |
38 # include "jvm_solaris.h" | |
11151 | 39 # include <setjmp.h> |
1972 | 40 #endif |
41 #ifdef TARGET_OS_FAMILY_windows | |
42 # include "jvm_windows.h" | |
43 #endif | |
3960 | 44 #ifdef TARGET_OS_FAMILY_bsd |
45 # include "jvm_bsd.h" | |
11151 | 46 # include <setjmp.h> |
3960 | 47 #endif |
1972 | 48 |
12117
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
49 class AgentLibrary; |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
50 |
0 | 51 // os defines the interface to operating system; this includes traditional |
52 // OS services (time, I/O) as well as other functionality with system- | |
53 // dependent code. | |
54 | |
55 typedef void (*dll_func)(...); | |
56 | |
57 class Thread; | |
58 class JavaThread; | |
59 class Event; | |
60 class DLL; | |
61 class FileHandle; | |
141 | 62 template<class E> class GrowableArray; |
0 | 63 |
64 // %%%%% Moved ThreadState, START_FN, OSThread to new osThread.hpp. -- Rose | |
65 | |
66 // Platform-independent error return values from OS functions | |
67 enum OSReturn { | |
68 OS_OK = 0, // Operation was successful | |
69 OS_ERR = -1, // Operation failed | |
70 OS_INTRPT = -2, // Operation was interrupted | |
71 OS_TIMEOUT = -3, // Operation timed out | |
72 OS_NOMEM = -5, // Operation failed for lack of memory | |
73 OS_NORESOURCE = -6 // Operation failed for lack of nonmemory resource | |
74 }; | |
75 | |
76 enum ThreadPriority { // JLS 20.20.1-3 | |
77 NoPriority = -1, // Initial non-priority value | |
78 MinPriority = 1, // Minimum priority | |
79 NormPriority = 5, // Normal (non-daemon) priority | |
80 NearMaxPriority = 9, // High priority, used for VMThread | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4755
diff
changeset
|
81 MaxPriority = 10, // Highest priority, used for WatcherThread |
0 | 82 // ensures that VMThread doesn't starve profiler |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4755
diff
changeset
|
83 CriticalPriority = 11 // Critical thread priority |
0 | 84 }; |
85 | |
10969
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
86 // Executable parameter flag for os::commit_memory() and |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
87 // os::commit_memory_or_exit(). |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
88 const bool ExecMem = true; |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
89 |
0 | 90 // Typedef for structured exception handling support |
91 typedef void (*java_call_t)(JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread); | |
92 | |
93 class os: AllStatic { | |
12258
69f26e8e09f9
8024760: add more types, fields and constants to VMStructs
twisti
parents:
12147
diff
changeset
|
94 friend class VMStructs; |
69f26e8e09f9
8024760: add more types, fields and constants to VMStructs
twisti
parents:
12147
diff
changeset
|
95 |
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
1078
diff
changeset
|
96 public: |
0 | 97 enum { page_sizes_max = 9 }; // Size of _page_sizes array (8 plus a sentinel) |
98 | |
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
1078
diff
changeset
|
99 private: |
0 | 100 static OSThread* _starting_thread; |
101 static address _polling_page; | |
102 static volatile int32_t * _mem_serialize_page; | |
103 static uintptr_t _serialize_page_mask; | |
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
1078
diff
changeset
|
104 public: |
0 | 105 static size_t _page_sizes[page_sizes_max]; |
106 | |
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
1078
diff
changeset
|
107 private: |
0 | 108 static void init_page_sizes(size_t default_page_size) { |
109 _page_sizes[0] = default_page_size; | |
110 _page_sizes[1] = 0; // sentinel | |
111 } | |
112 | |
6197 | 113 static char* pd_reserve_memory(size_t bytes, char* addr = 0, |
114 size_t alignment_hint = 0); | |
115 static char* pd_attempt_reserve_memory_at(size_t bytes, char* addr); | |
116 static void pd_split_reserved_memory(char *base, size_t size, | |
117 size_t split, bool realloc); | |
10969
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
118 static bool pd_commit_memory(char* addr, size_t bytes, bool executable); |
6197 | 119 static bool pd_commit_memory(char* addr, size_t size, size_t alignment_hint, |
10969
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
120 bool executable); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
121 // Same as pd_commit_memory() that either succeeds or calls |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
122 // vm_exit_out_of_memory() with the specified mesg. |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
123 static void pd_commit_memory_or_exit(char* addr, size_t bytes, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
124 bool executable, const char* mesg); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
125 static void pd_commit_memory_or_exit(char* addr, size_t size, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
126 size_t alignment_hint, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
127 bool executable, const char* mesg); |
6197 | 128 static bool pd_uncommit_memory(char* addr, size_t bytes); |
129 static bool pd_release_memory(char* addr, size_t bytes); | |
130 | |
131 static char* pd_map_memory(int fd, const char* file_name, size_t file_offset, | |
132 char *addr, size_t bytes, bool read_only = false, | |
133 bool allow_exec = false); | |
134 static char* pd_remap_memory(int fd, const char* file_name, size_t file_offset, | |
135 char *addr, size_t bytes, bool read_only, | |
136 bool allow_exec); | |
137 static bool pd_unmap_memory(char *addr, size_t bytes); | |
138 static void pd_free_memory(char *addr, size_t bytes, size_t alignment_hint); | |
139 static void pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint); | |
140 | |
141 | |
0 | 142 public: |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
143 static void init(void); // Called before command line parsing |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
144 static jint init_2(void); // Called after command line parsing |
4749
7ab5f6318694
7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64
phh
parents:
4717
diff
changeset
|
145 static void init_globals(void) { // Called from init_globals() in init.cpp |
7ab5f6318694
7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64
phh
parents:
4717
diff
changeset
|
146 init_globals_ext(); |
7ab5f6318694
7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64
phh
parents:
4717
diff
changeset
|
147 } |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
148 static void init_3(void); // Called at the end of vm init |
0 | 149 |
150 // File names are case-insensitive on windows only | |
151 // Override me as needed | |
152 static int file_name_strcmp(const char* s1, const char* s2); | |
153 | |
154 static bool getenv(const char* name, char* buffer, int len); | |
155 static bool have_special_privileges(); | |
156 | |
157 static jlong javaTimeMillis(); | |
158 static jlong javaTimeNanos(); | |
159 static void javaTimeNanos_info(jvmtiTimerInfo *info_ptr); | |
160 static void run_periodic_checks(); | |
161 | |
162 | |
163 // Returns the elapsed time in seconds since the vm started. | |
164 static double elapsedTime(); | |
165 | |
166 // Returns real time in seconds since an arbitrary point | |
167 // in the past. | |
168 static bool getTimesSecs(double* process_real_time, | |
169 double* process_user_time, | |
170 double* process_system_time); | |
171 | |
172 // Interface to the performance counter | |
173 static jlong elapsed_counter(); | |
174 static jlong elapsed_frequency(); | |
175 | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
176 // The "virtual time" of a thread is the amount of time a thread has |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
177 // actually run. The first function indicates whether the OS supports |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
178 // this functionality for the current thread, and if so: |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
179 // * the second enables vtime tracking (if that is required). |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
180 // * the third tells whether vtime is enabled. |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
181 // * the fourth returns the elapsed virtual time for the current |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
182 // thread. |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
183 static bool supports_vtime(); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
184 static bool enable_vtime(); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
185 static bool vtime_enabled(); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
186 static double elapsedVTime(); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
141
diff
changeset
|
187 |
0 | 188 // Return current local time in a string (YYYY-MM-DD HH:MM:SS). |
189 // It is MT safe, but not async-safe, as reading time zone | |
190 // information may require a lock on some platforms. | |
548
773234c55e8c
6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents:
477
diff
changeset
|
191 static char* local_time_string(char *buf, size_t buflen); |
773234c55e8c
6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
ysr
parents:
477
diff
changeset
|
192 static struct tm* localtime_pd (const time_t* clock, struct tm* res); |
0 | 193 // Fill in buffer with current local time as an ISO-8601 string. |
194 // E.g., YYYY-MM-DDThh:mm:ss.mmm+zzzz. | |
195 // Returns buffer, or NULL if it failed. | |
196 static char* iso8601_time(char* buffer, size_t buffer_length); | |
197 | |
198 // Interface for detecting multiprocessor system | |
199 static inline bool is_MP() { | |
200 assert(_processor_count > 0, "invalid processor count"); | |
8845
1b90c7607451
2178143: JVM crashes if the number of bound CPUs changed during runtime
minqi
parents:
7623
diff
changeset
|
201 return _processor_count > 1 || AssumeMP; |
0 | 202 } |
203 static julong available_memory(); | |
204 static julong physical_memory(); | |
8854
754c24457b20
7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM
tschatzl
parents:
7623
diff
changeset
|
205 static bool has_allocatable_memory_limit(julong* limit); |
0 | 206 static bool is_server_class_machine(); |
207 | |
208 // number of CPUs | |
209 static int processor_count() { | |
210 return _processor_count; | |
211 } | |
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
1078
diff
changeset
|
212 static void set_processor_count(int count) { _processor_count = count; } |
0 | 213 |
214 // Returns the number of CPUs this process is currently allowed to run on. | |
215 // Note that on some OSes this can change dynamically. | |
216 static int active_processor_count(); | |
217 | |
218 // Bind processes to processors. | |
219 // This is a two step procedure: | |
220 // first you generate a distribution of processes to processors, | |
221 // then you bind processes according to that distribution. | |
222 // Compute a distribution for number of processes to processors. | |
223 // Stores the processor id's into the distribution array argument. | |
224 // Returns true if it worked, false if it didn't. | |
225 static bool distribute_processes(uint length, uint* distribution); | |
226 // Binds the current process to a processor. | |
227 // Returns true if it worked, false if it didn't. | |
228 static bool bind_to_processor(uint processor_id); | |
229 | |
4006 | 230 // Give a name to the current thread. |
231 static void set_native_thread_name(const char *name); | |
232 | |
0 | 233 // Interface for stack banging (predetect possible stack overflow for |
234 // exception processing) There are guard pages, and above that shadow | |
235 // pages for stack overflow checking. | |
236 static bool uses_stack_guard_pages(); | |
237 static bool allocate_stack_guard_pages(); | |
238 static void bang_stack_shadow_pages(); | |
239 static bool stack_shadow_pages_available(Thread *thread, methodHandle method); | |
240 | |
241 // OS interface to Virtual Memory | |
242 | |
243 // Return the default page size. | |
244 static int vm_page_size(); | |
245 | |
246 // Return the page size to use for a region of memory. The min_pages argument | |
247 // is a hint intended to limit fragmentation; it says the returned page size | |
248 // should be <= region_max_size / min_pages. Because min_pages is a hint, | |
249 // this routine may return a size larger than region_max_size / min_pages. | |
250 // | |
251 // The current implementation ignores min_pages if a larger page size is an | |
252 // exact multiple of both region_min_size and region_max_size. This allows | |
253 // larger pages to be used when doing so would not cause fragmentation; in | |
254 // particular, a single page can be used when region_min_size == | |
255 // region_max_size == a supported page size. | |
256 static size_t page_size_for_region(size_t region_min_size, | |
257 size_t region_max_size, | |
258 uint min_pages); | |
259 | |
3859 | 260 // Methods for tracing page sizes returned by the above method; enabled by |
0 | 261 // TracePageSizes. The region_{min,max}_size parameters should be the values |
262 // passed to page_size_for_region() and page_size should be the result of that | |
263 // call. The (optional) base and size parameters should come from the | |
264 // ReservedSpace base() and size() methods. | |
3859 | 265 static void trace_page_sizes(const char* str, const size_t* page_sizes, |
266 int count) PRODUCT_RETURN; | |
0 | 267 static void trace_page_sizes(const char* str, const size_t region_min_size, |
268 const size_t region_max_size, | |
269 const size_t page_size, | |
270 const char* base = NULL, | |
271 const size_t size = 0) PRODUCT_RETURN; | |
272 | |
273 static int vm_allocation_granularity(); | |
274 static char* reserve_memory(size_t bytes, char* addr = 0, | |
275 size_t alignment_hint = 0); | |
10221
c18152e0554e
8013120: NMT: Kitchensink crashes with assert(next_region == NULL || !next_region->is_committed_region()) failed: Sanity check
zgu
parents:
10195
diff
changeset
|
276 static char* reserve_memory(size_t bytes, char* addr, |
c18152e0554e
8013120: NMT: Kitchensink crashes with assert(next_region == NULL || !next_region->is_committed_region()) failed: Sanity check
zgu
parents:
10195
diff
changeset
|
277 size_t alignment_hint, MEMFLAGS flags); |
7433
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
parents:
6966
diff
changeset
|
278 static char* reserve_memory_aligned(size_t size, size_t alignment); |
0 | 279 static char* attempt_reserve_memory_at(size_t bytes, char* addr); |
280 static void split_reserved_memory(char *base, size_t size, | |
281 size_t split, bool realloc); | |
10969
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
282 static bool commit_memory(char* addr, size_t bytes, bool executable); |
656 | 283 static bool commit_memory(char* addr, size_t size, size_t alignment_hint, |
10969
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
284 bool executable); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
285 // Same as commit_memory() that either succeeds or calls |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
286 // vm_exit_out_of_memory() with the specified mesg. |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
287 static void commit_memory_or_exit(char* addr, size_t bytes, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
288 bool executable, const char* mesg); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
289 static void commit_memory_or_exit(char* addr, size_t size, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
290 size_t alignment_hint, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
291 bool executable, const char* mesg); |
0 | 292 static bool uncommit_memory(char* addr, size_t bytes); |
293 static bool release_memory(char* addr, size_t bytes); | |
237
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
196
diff
changeset
|
294 |
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
196
diff
changeset
|
295 enum ProtType { MEM_PROT_NONE, MEM_PROT_READ, MEM_PROT_RW, MEM_PROT_RWX }; |
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
196
diff
changeset
|
296 static bool protect_memory(char* addr, size_t bytes, ProtType prot, |
477
24fda36852ce
6727377: VM stack guard pages on Windows should PAGE_READWRITE not PAGE_EXECUTE_READWRITE
coleenp
parents:
356
diff
changeset
|
297 bool is_committed = true); |
237
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
196
diff
changeset
|
298 |
0 | 299 static bool guard_memory(char* addr, size_t bytes); |
300 static bool unguard_memory(char* addr, size_t bytes); | |
1320
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
301 static bool create_stack_guard_pages(char* addr, size_t bytes); |
6197 | 302 static bool pd_create_stack_guard_pages(char* addr, size_t bytes); |
1320
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
303 static bool remove_stack_guard_pages(char* addr, size_t bytes); |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
304 |
0 | 305 static char* map_memory(int fd, const char* file_name, size_t file_offset, |
306 char *addr, size_t bytes, bool read_only = false, | |
307 bool allow_exec = false); | |
308 static char* remap_memory(int fd, const char* file_name, size_t file_offset, | |
309 char *addr, size_t bytes, bool read_only, | |
310 bool allow_exec); | |
311 static bool unmap_memory(char *addr, size_t bytes); | |
4734
20bfb6d15a94
7124829: NUMA: memory leak on Linux with large pages
iveresov
parents:
4717
diff
changeset
|
312 static void free_memory(char *addr, size_t bytes, size_t alignment_hint); |
0 | 313 static void realign_memory(char *addr, size_t bytes, size_t alignment_hint); |
314 | |
315 // NUMA-specific interface | |
141 | 316 static bool numa_has_static_binding(); |
317 static bool numa_has_group_homing(); | |
318 static void numa_make_local(char *addr, size_t bytes, int lgrp_hint); | |
0 | 319 static void numa_make_global(char *addr, size_t bytes); |
320 static size_t numa_get_groups_num(); | |
321 static size_t numa_get_leaf_groups(int *ids, size_t size); | |
322 static bool numa_topology_changed(); | |
323 static int numa_get_group_id(); | |
324 | |
325 // Page manipulation | |
326 struct page_info { | |
327 size_t size; | |
328 int lgrp_id; | |
329 }; | |
330 static bool get_page_info(char *start, page_info* info); | |
331 static char* scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found); | |
332 | |
333 static char* non_memory_address_word(); | |
334 // reserve, commit and pin the entire memory region | |
12110
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11153
diff
changeset
|
335 static char* reserve_memory_special(size_t size, size_t alignment, |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11153
diff
changeset
|
336 char* addr, bool executable); |
0 | 337 static bool release_memory_special(char* addr, size_t bytes); |
3318
188c9a5d6a6d
7040485: Use transparent huge page on linux by default
iveresov
parents:
2469
diff
changeset
|
338 static void large_page_init(); |
0 | 339 static size_t large_page_size(); |
340 static bool can_commit_large_page_memory(); | |
79
82db0859acbe
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
61
diff
changeset
|
341 static bool can_execute_large_page_memory(); |
0 | 342 |
343 // OS interface to polling page | |
344 static address get_polling_page() { return _polling_page; } | |
345 static void set_polling_page(address page) { _polling_page = page; } | |
346 static bool is_poll_address(address addr) { return addr >= _polling_page && addr < (_polling_page + os::vm_page_size()); } | |
347 static void make_polling_page_unreadable(); | |
348 static void make_polling_page_readable(); | |
349 | |
350 // Routines used to serialize the thread state without using membars | |
351 static void serialize_thread_states(); | |
352 | |
353 // Since we write to the serialize page from every thread, we | |
354 // want stores to be on unique cache lines whenever possible | |
355 // in order to minimize CPU cross talk. We pre-compute the | |
356 // amount to shift the thread* to make this offset unique to | |
357 // each thread. | |
358 static int get_serialize_page_shift_count() { | |
359 return SerializePageShiftCount; | |
360 } | |
361 | |
362 static void set_serialize_page_mask(uintptr_t mask) { | |
363 _serialize_page_mask = mask; | |
364 } | |
365 | |
366 static unsigned int get_serialize_page_mask() { | |
367 return _serialize_page_mask; | |
368 } | |
369 | |
370 static void set_memory_serialize_page(address page); | |
371 | |
372 static address get_memory_serialize_page() { | |
373 return (address)_mem_serialize_page; | |
374 } | |
375 | |
376 static inline void write_memory_serialize_page(JavaThread *thread) { | |
377 uintptr_t page_offset = ((uintptr_t)thread >> | |
378 get_serialize_page_shift_count()) & | |
379 get_serialize_page_mask(); | |
380 *(volatile int32_t *)((uintptr_t)_mem_serialize_page+page_offset) = 1; | |
381 } | |
382 | |
383 static bool is_memory_serialize_page(JavaThread *thread, address addr) { | |
384 if (UseMembar) return false; | |
1078 | 385 // Previously this function calculated the exact address of this |
386 // thread's serialize page, and checked if the faulting address | |
387 // was equal. However, some platforms mask off faulting addresses | |
388 // to the page size, so now we just check that the address is | |
389 // within the page. This makes the thread argument unnecessary, | |
390 // but we retain the NULL check to preserve existing behaviour. | |
0 | 391 if (thread == NULL) return false; |
1078 | 392 address page = (address) _mem_serialize_page; |
393 return addr >= page && addr < (page + os::vm_page_size()); | |
0 | 394 } |
395 | |
396 static void block_on_serialize_page_trap(); | |
397 | |
398 // threads | |
399 | |
400 enum ThreadType { | |
401 vm_thread, | |
402 cgc_thread, // Concurrent GC thread | |
403 pgc_thread, // Parallel GC thread | |
404 java_thread, | |
405 compiler_thread, | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
406 watcher_thread, |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
407 os_thread |
0 | 408 }; |
409 | |
410 static bool create_thread(Thread* thread, | |
411 ThreadType thr_type, | |
412 size_t stack_size = 0); | |
413 static bool create_main_thread(JavaThread* thread); | |
414 static bool create_attached_thread(JavaThread* thread); | |
415 static void pd_start_thread(Thread* thread); | |
416 static void start_thread(Thread* thread); | |
417 | |
6768
716e6ef4482a
7190089: NMT ON: NMT failed assertion on thread's stack base address
zgu
parents:
6200
diff
changeset
|
418 static void initialize_thread(Thread* thr); |
0 | 419 static void free_thread(OSThread* osthread); |
420 | |
421 // thread id on Linux/64bit is 64bit, on Windows and Solaris, it's 32bit | |
422 static intx current_thread_id(); | |
423 static int current_process_id(); | |
424 static int sleep(Thread* thread, jlong ms, bool interruptable); | |
425 static int naked_sleep(); | |
426 static void infinite_sleep(); // never returns, use with CAUTION | |
427 static void yield(); // Yields to all threads with same priority | |
428 enum YieldResult { | |
429 YIELD_SWITCHED = 1, // caller descheduled, other ready threads exist & ran | |
430 YIELD_NONEREADY = 0, // No other runnable/ready threads. | |
431 // platform-specific yield return immediately | |
432 YIELD_UNKNOWN = -1 // Unknown: platform doesn't support _SWITCHED or _NONEREADY | |
433 // YIELD_SWITCHED and YIELD_NONREADY imply the platform supports a "strong" | |
434 // yield that can be used in lieu of blocking. | |
435 } ; | |
436 static YieldResult NakedYield () ; | |
437 static void yield_all(int attempts = 0); // Yields to all other threads including lower priority | |
438 static void loop_breaker(int attempts); // called from within tight loops to possibly influence time-sharing | |
439 static OSReturn set_priority(Thread* thread, ThreadPriority priority); | |
440 static OSReturn get_priority(const Thread* const thread, ThreadPriority& priority); | |
441 | |
442 static void interrupt(Thread* thread); | |
443 static bool is_interrupted(Thread* thread, bool clear_interrupted); | |
444 | |
445 static int pd_self_suspend_thread(Thread* thread); | |
446 | |
447 static ExtendedPC fetch_frame_from_context(void* ucVoid, intptr_t** sp, intptr_t** fp); | |
448 static frame fetch_frame_from_context(void* ucVoid); | |
449 | |
450 static ExtendedPC get_thread_pc(Thread *thread); | |
451 static void breakpoint(); | |
452 | |
453 static address current_stack_pointer(); | |
454 static address current_stack_base(); | |
455 static size_t current_stack_size(); | |
456 | |
5903
da4be62fb889
7147740: add assertions to check stack alignment on VM entry from generated code (x64)
roland
parents:
4854
diff
changeset
|
457 static void verify_stack_alignment() PRODUCT_RETURN; |
da4be62fb889
7147740: add assertions to check stack alignment on VM entry from generated code (x64)
roland
parents:
4854
diff
changeset
|
458 |
0 | 459 static int message_box(const char* title, const char* message); |
460 static char* do_you_want_to_debug(const char* message); | |
461 | |
462 // run cmd in a separate process and return its exit code; or -1 on failures | |
463 static int fork_and_exec(char *cmd); | |
464 | |
465 // Set file to send error reports. | |
466 static void set_error_file(const char *logfile); | |
467 | |
468 // os::exit() is merged with vm_exit() | |
469 // static void exit(int num); | |
470 | |
471 // Terminate the VM, but don't exit the process | |
472 static void shutdown(); | |
473 | |
474 // Terminate with an error. Default is to generate a core file on platforms | |
475 // that support such things. This calls shutdown() and then aborts. | |
476 static void abort(bool dump_core = true); | |
477 | |
478 // Die immediately, no exit hook, no abort hook, no cleanup. | |
479 static void die(); | |
480 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
481 // File i/o operations |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
482 static const int default_file_open_flags(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
483 static int open(const char *path, int oflag, int mode); |
10195
e12c9b3740db
8012260: ciReplay: Include PID into the name of replay data file
vlivanov
parents:
8859
diff
changeset
|
484 static FILE* open(int fd, const char* mode); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
485 static int close(int fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
486 static jlong lseek(int fd, jlong offset, int whence); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
487 static char* native_path(char *path); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
488 static int ftruncate(int fd, jlong length); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
489 static int fsync(int fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
490 static int available(int fd, jlong *bytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
491 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
492 //File i/o operations |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
493 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
494 static size_t read(int fd, void *buf, unsigned int nBytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
495 static size_t restartable_read(int fd, void *buf, unsigned int nBytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
496 static size_t write(int fd, const void *buf, unsigned int nBytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
497 |
0 | 498 // Reading directories. |
499 static DIR* opendir(const char* dirname); | |
500 static int readdir_buf_size(const char *path); | |
501 static struct dirent* readdir(DIR* dirp, dirent* dbuf); | |
502 static int closedir(DIR* dirp); | |
503 | |
504 // Dynamic library extension | |
505 static const char* dll_file_extension(); | |
506 | |
507 static const char* get_temp_directory(); | |
10195
e12c9b3740db
8012260: ciReplay: Include PID into the name of replay data file
vlivanov
parents:
8859
diff
changeset
|
508 static const char* get_current_directory(char *buf, size_t buflen); |
0 | 509 |
242 | 510 // Builds a platform-specific full library path given a ld path and lib name |
6966
6cb0d32b828b
8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents:
6768
diff
changeset
|
511 // Returns true if buffer contains full path to existing file, false otherwise |
6cb0d32b828b
8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
bpittore
parents:
6768
diff
changeset
|
512 static bool dll_build_name(char* buffer, size_t size, |
242 | 513 const char* pathname, const char* fname); |
514 | |
0 | 515 // Symbol lookup, find nearest function name; basically it implements |
516 // dladdr() for all platforms. Name of the nearest function is copied | |
11092
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
10969
diff
changeset
|
517 // to buf. Distance from its base address is optionally returned as offset. |
0 | 518 // If function name is not found, buf[0] is set to '\0' and offset is |
11092
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
10969
diff
changeset
|
519 // set to -1 (if offset is non-NULL). |
0 | 520 static bool dll_address_to_function_name(address addr, char* buf, |
521 int buflen, int* offset); | |
522 | |
523 // Locate DLL/DSO. On success, full path of the library is copied to | |
11092
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
10969
diff
changeset
|
524 // buf, and offset is optionally set to be the distance between addr |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
10969
diff
changeset
|
525 // and the library's base address. On failure, buf[0] is set to '\0' |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
10969
diff
changeset
|
526 // and offset is set to -1 (if offset is non-NULL). |
0 | 527 static bool dll_address_to_library_name(address addr, char* buf, |
528 int buflen, int* offset); | |
529 | |
530 // Find out whether the pc is in the static code for jvm.dll/libjvm.so. | |
531 static bool address_is_in_vm(address addr); | |
532 | |
533 // Loads .dll/.so and | |
534 // in case of error it checks if .dll/.so was built for the | |
535 // same architecture as Hotspot is running on | |
536 static void* dll_load(const char *name, char *ebuf, int ebuflen); | |
537 | |
242 | 538 // lookup symbol in a shared library |
539 static void* dll_lookup(void* handle, const char* name); | |
540 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
541 // Unload library |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
542 static void dll_unload(void *lib); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
543 |
12117
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
544 // Return the handle of this process |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
545 static void* get_default_process_handle(); |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
546 |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
547 // Check for static linked agent library |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
548 static bool find_builtin_agent(AgentLibrary *agent_lib, const char *syms[], |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
549 size_t syms_len); |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
550 |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
551 // Find agent entry point |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
552 static void *find_agent_function(AgentLibrary *agent_lib, bool check_lib, |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
553 const char *syms[], size_t syms_len); |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
554 |
0 | 555 // Print out system information; they are called by fatal error handler. |
556 // Output format may be different on different platforms. | |
557 static void print_os_info(outputStream* st); | |
6080
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
5903
diff
changeset
|
558 static void print_os_info_brief(outputStream* st); |
0 | 559 static void print_cpu_info(outputStream* st); |
3800
bf6481e5f96d
7061225: os::print_cpu_info() should support os-specific data
jcoomes
parents:
3318
diff
changeset
|
560 static void pd_print_cpu_info(outputStream* st); |
0 | 561 static void print_memory_info(outputStream* st); |
562 static void print_dll_info(outputStream* st); | |
563 static void print_environment_variables(outputStream* st, const char** env_list, char* buffer, int len); | |
564 static void print_context(outputStream* st, void* context); | |
1907 | 565 static void print_register_info(outputStream* st, void* context); |
0 | 566 static void print_siginfo(outputStream* st, void* siginfo); |
567 static void print_signal_handlers(outputStream* st, char* buf, size_t buflen); | |
568 static void print_date_and_time(outputStream* st); | |
569 | |
1907 | 570 static void print_location(outputStream* st, intptr_t x, bool verbose = false); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
571 static size_t lasterror(char *buf, size_t len); |
4750
b16494a69d3d
7126185: Clean up lasterror handling, add os::get_last_error()
phh
parents:
4749
diff
changeset
|
572 static int get_last_error(); |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
573 |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2204
diff
changeset
|
574 // Determines whether the calling process is being debugged by a user-mode debugger. |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2204
diff
changeset
|
575 static bool is_debugger_attached(); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2204
diff
changeset
|
576 |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2204
diff
changeset
|
577 // wait for a key press if PauseAtExit is set |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2204
diff
changeset
|
578 static void wait_for_keypress_at_exit(void); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2204
diff
changeset
|
579 |
0 | 580 // The following two functions are used by fatal error handler to trace |
581 // native (C) frames. They are not part of frame.hpp/frame.cpp because | |
582 // frame.hpp/cpp assume thread is JavaThread, and also because different | |
583 // OS/compiler may have different convention or provide different API to | |
584 // walk C frames. | |
585 // | |
586 // We don't attempt to become a debugger, so we only follow frames if that | |
587 // does not require a lookup in the unwind table, which is part of the binary | |
588 // file but may be unsafe to read after a fatal error. So on x86, we can | |
589 // only walk stack if %ebp is used as frame pointer; on ia64, it's not | |
590 // possible to walk C stack without having the unwind table. | |
591 static bool is_first_C_frame(frame *fr); | |
592 static frame get_sender_for_C_frame(frame *fr); | |
593 | |
594 // return current frame. pc() and sp() are set to NULL on failure. | |
595 static frame current_frame(); | |
596 | |
597 static void print_hex_dump(outputStream* st, address start, address end, int unitsize); | |
598 | |
599 // returns a string to describe the exception/signal; | |
600 // returns NULL if exception_code is not an OS exception/signal. | |
601 static const char* exception_name(int exception_code, char* buf, size_t buflen); | |
602 | |
603 // Returns native Java library, loads if necessary | |
604 static void* native_java_library(); | |
605 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
606 // Fills in path to jvm.dll/libjvm.so (used by the Disassembler) |
0 | 607 static void jvm_path(char *buf, jint buflen); |
608 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
609 // Returns true if we are running in a headless jre. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
610 static bool is_headless_jre(); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
611 |
0 | 612 // JNI names |
613 static void print_jni_name_prefix_on(outputStream* st, int args_size); | |
614 static void print_jni_name_suffix_on(outputStream* st, int args_size); | |
615 | |
616 // File conventions | |
617 static const char* file_separator(); | |
618 static const char* line_separator(); | |
619 static const char* path_separator(); | |
620 | |
621 // Init os specific system properties values | |
622 static void init_system_properties_values(); | |
623 | |
624 // IO operations, non-JVM_ version. | |
625 static int stat(const char* path, struct stat* sbuf); | |
626 static bool dir_is_empty(const char* path); | |
627 | |
628 // IO operations on binary files | |
629 static int create_binary_file(const char* path, bool rewrite_existing); | |
630 static jlong current_file_offset(int fd); | |
631 static jlong seek_to_file_offset(int fd, jlong offset); | |
632 | |
633 // Thread Local Storage | |
634 static int allocate_thread_local_storage(); | |
635 static void thread_local_storage_at_put(int index, void* value); | |
636 static void* thread_local_storage_at(int index); | |
637 static void free_thread_local_storage(int index); | |
638 | |
6197 | 639 // Stack walk |
640 static address get_caller_pc(int n = 0); | |
641 | |
0 | 642 // General allocation (must be MT-safe) |
6197 | 643 static void* malloc (size_t size, MEMFLAGS flags, address caller_pc = 0); |
644 static void* realloc (void *memblock, size_t size, MEMFLAGS flags, address caller_pc = 0); | |
645 static void free (void *memblock, MEMFLAGS flags = mtNone); | |
0 | 646 static bool check_heap(bool force = false); // verify C heap integrity |
6197 | 647 static char* strdup(const char *, MEMFLAGS flags = mtInternal); // Like strdup |
0 | 648 |
649 #ifndef PRODUCT | |
2250 | 650 static julong num_mallocs; // # of calls to malloc/realloc |
651 static julong alloc_bytes; // # of bytes allocated | |
652 static julong num_frees; // # of calls to free | |
653 static julong free_bytes; // # of bytes freed | |
0 | 654 #endif |
655 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
656 // SocketInterface (ex HPI SocketInterface ) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
657 static int socket(int domain, int type, int protocol); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
658 static int socket_close(int fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
659 static int socket_shutdown(int fd, int howto); |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
660 static int recv(int fd, char* buf, size_t nBytes, uint flags); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
661 static int send(int fd, char* buf, size_t nBytes, uint flags); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
662 static int raw_send(int fd, char* buf, size_t nBytes, uint flags); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
663 static int timeout(int fd, long timeout); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
664 static int listen(int fd, int count); |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
665 static int connect(int fd, struct sockaddr* him, socklen_t len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
666 static int bind(int fd, struct sockaddr* him, socklen_t len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
667 static int accept(int fd, struct sockaddr* him, socklen_t* len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
668 static int recvfrom(int fd, char* buf, size_t nbytes, uint flags, |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
669 struct sockaddr* from, socklen_t* fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
670 static int get_sock_name(int fd, struct sockaddr* him, socklen_t* len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
671 static int sendto(int fd, char* buf, size_t len, uint flags, |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
672 struct sockaddr* to, socklen_t tolen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
673 static int socket_available(int fd, jint* pbytes); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
674 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
675 static int get_sock_opt(int fd, int level, int optname, |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
676 char* optval, socklen_t* optlen); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
677 static int set_sock_opt(int fd, int level, int optname, |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
678 const char* optval, socklen_t optlen); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
679 static int get_host_name(char* name, int namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
680 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
681 static struct hostent* get_host_by_name(char* name); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
682 |
0 | 683 // Support for signals (see JVM_RaiseSignal, JVM_RegisterSignal) |
684 static void signal_init(); | |
685 static void signal_init_pd(); | |
686 static void signal_notify(int signal_number); | |
687 static void* signal(int signal_number, void* handler); | |
688 static void signal_raise(int signal_number); | |
689 static int signal_wait(); | |
690 static int signal_lookup(); | |
691 static void* user_handler(); | |
692 static void terminate_signal_thread(); | |
693 static int sigexitnum_pd(); | |
694 | |
695 // random number generation | |
696 static long random(); // return 32bit pseudorandom number | |
697 static void init_random(long initval); // initialize random sequence | |
698 | |
699 // Structured OS Exception support | |
700 static void os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread); | |
701 | |
2204
63d374c54045
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
2192
diff
changeset
|
702 // On Windows this will create an actual minidump, on Linux/Solaris it will simply check core dump limits |
63d374c54045
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
2192
diff
changeset
|
703 static void check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize); |
63d374c54045
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
2192
diff
changeset
|
704 |
6200
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
705 // Get the default path to the core file |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
706 // Returns the length of the string |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
707 static int get_core_path(char* buffer, size_t bufferSize); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
708 |
0 | 709 // JVMTI & JVM monitoring and management support |
710 // The thread_cpu_time() and current_thread_cpu_time() are only | |
711 // supported if is_thread_cpu_time_supported() returns true. | |
712 // They are not supported on Solaris T1. | |
713 | |
714 // Thread CPU Time - return the fast estimate on a platform | |
715 // On Solaris - call gethrvtime (fast) - user time only | |
716 // On Linux - fast clock_gettime where available - user+sys | |
717 // - otherwise: very slow /proc fs - user+sys | |
718 // On Windows - GetThreadTimes - user+sys | |
719 static jlong current_thread_cpu_time(); | |
720 static jlong thread_cpu_time(Thread* t); | |
721 | |
722 // Thread CPU Time with user_sys_cpu_time parameter. | |
723 // | |
724 // If user_sys_cpu_time is true, user+sys time is returned. | |
725 // Otherwise, only user time is returned | |
726 static jlong current_thread_cpu_time(bool user_sys_cpu_time); | |
727 static jlong thread_cpu_time(Thread* t, bool user_sys_cpu_time); | |
728 | |
729 // Return a bunch of info about the timers. | |
730 // Note that the returned info for these two functions may be different | |
731 // on some platforms | |
732 static void current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr); | |
733 static void thread_cpu_time_info(jvmtiTimerInfo *info_ptr); | |
734 | |
735 static bool is_thread_cpu_time_supported(); | |
736 | |
737 // System loadavg support. Returns -1 if load average cannot be obtained. | |
738 static int loadavg(double loadavg[], int nelem); | |
739 | |
740 // Hook for os specific jvm options that we don't want to abort on seeing | |
741 static bool obsolete_option(const JavaVMOption *option); | |
742 | |
4749
7ab5f6318694
7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64
phh
parents:
4717
diff
changeset
|
743 // Extensions |
7ab5f6318694
7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64
phh
parents:
4717
diff
changeset
|
744 #include "runtime/os_ext.hpp" |
7ab5f6318694
7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64
phh
parents:
4717
diff
changeset
|
745 |
7ab5f6318694
7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64
phh
parents:
4717
diff
changeset
|
746 public: |
11151 | 747 class CrashProtectionCallback : public StackObj { |
748 public: | |
749 virtual void call() = 0; | |
750 }; | |
4749
7ab5f6318694
7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64
phh
parents:
4717
diff
changeset
|
751 |
0 | 752 // Platform dependent stuff |
1972 | 753 #ifdef TARGET_OS_FAMILY_linux |
754 # include "os_linux.hpp" | |
6080
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
5903
diff
changeset
|
755 # include "os_posix.hpp" |
1972 | 756 #endif |
757 #ifdef TARGET_OS_FAMILY_solaris | |
758 # include "os_solaris.hpp" | |
6080
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
5903
diff
changeset
|
759 # include "os_posix.hpp" |
1972 | 760 #endif |
761 #ifdef TARGET_OS_FAMILY_windows | |
762 # include "os_windows.hpp" | |
763 #endif | |
3960 | 764 #ifdef TARGET_OS_FAMILY_bsd |
6080
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
5903
diff
changeset
|
765 # include "os_posix.hpp" |
3960 | 766 # include "os_bsd.hpp" |
767 #endif | |
1972 | 768 #ifdef TARGET_OS_ARCH_linux_x86 |
769 # include "os_linux_x86.hpp" | |
770 #endif | |
771 #ifdef TARGET_OS_ARCH_linux_sparc | |
772 # include "os_linux_sparc.hpp" | |
773 #endif | |
774 #ifdef TARGET_OS_ARCH_linux_zero | |
775 # include "os_linux_zero.hpp" | |
776 #endif | |
777 #ifdef TARGET_OS_ARCH_solaris_x86 | |
778 # include "os_solaris_x86.hpp" | |
779 #endif | |
780 #ifdef TARGET_OS_ARCH_solaris_sparc | |
781 # include "os_solaris_sparc.hpp" | |
782 #endif | |
783 #ifdef TARGET_OS_ARCH_windows_x86 | |
784 # include "os_windows_x86.hpp" | |
785 #endif | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1980
diff
changeset
|
786 #ifdef TARGET_OS_ARCH_linux_arm |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1980
diff
changeset
|
787 # include "os_linux_arm.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1980
diff
changeset
|
788 #endif |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1980
diff
changeset
|
789 #ifdef TARGET_OS_ARCH_linux_ppc |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1980
diff
changeset
|
790 # include "os_linux_ppc.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1980
diff
changeset
|
791 #endif |
3960 | 792 #ifdef TARGET_OS_ARCH_bsd_x86 |
793 # include "os_bsd_x86.hpp" | |
794 #endif | |
795 #ifdef TARGET_OS_ARCH_bsd_zero | |
796 # include "os_bsd_zero.hpp" | |
797 #endif | |
1972 | 798 |
4749
7ab5f6318694
7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64
phh
parents:
4717
diff
changeset
|
799 public: |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
800 // debugging support (mostly used by debug.cpp but also fatal error handler) |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
801 static bool find(address pc, outputStream* st = tty); // OS specific function to make sense out of an address |
0 | 802 |
803 static bool dont_yield(); // when true, JVM_Yield() is nop | |
804 static void print_statistics(); | |
805 | |
806 // Thread priority helpers (implemented in OS-specific part) | |
807 static OSReturn set_native_priority(Thread* thread, int native_prio); | |
808 static OSReturn get_native_priority(const Thread* const thread, int* priority_ptr); | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4755
diff
changeset
|
809 static int java_to_os_priority[CriticalPriority + 1]; |
0 | 810 // Hint to the underlying OS that a task switch would not be good. |
811 // Void return because it's a hint and can fail. | |
812 static void hint_no_preempt(); | |
813 | |
814 // Used at creation if requested by the diagnostic flag PauseAtStartup. | |
815 // Causes the VM to wait until an external stimulus has been applied | |
816 // (for Unix, that stimulus is a signal, for Windows, an external | |
817 // ResumeThread call) | |
818 static void pause(); | |
819 | |
12117
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
820 // Builds a platform dependent Agent_OnLoad_<libname> function name |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
821 // which is used to find statically linked in agents. |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
822 static char* build_agent_function_name(const char *sym, const char *cname, |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
823 bool is_absolute_path); |
f92b82d454fa
8014135: The JVMTI specification does not conform to recent changes in JNI specification
bpittore
parents:
11153
diff
changeset
|
824 |
10405 | 825 class SuspendedThreadTaskContext { |
826 public: | |
827 SuspendedThreadTaskContext(Thread* thread, void *ucontext) : _thread(thread), _ucontext(ucontext) {} | |
828 Thread* thread() const { return _thread; } | |
829 void* ucontext() const { return _ucontext; } | |
830 private: | |
831 Thread* _thread; | |
832 void* _ucontext; | |
833 }; | |
834 | |
835 class SuspendedThreadTask { | |
836 public: | |
837 SuspendedThreadTask(Thread* thread) : _thread(thread), _done(false) {} | |
838 virtual ~SuspendedThreadTask() {} | |
839 void run(); | |
840 bool is_done() { return _done; } | |
841 virtual void do_task(const SuspendedThreadTaskContext& context) = 0; | |
842 protected: | |
843 private: | |
844 void internal_do_task(); | |
845 Thread* _thread; | |
846 bool _done; | |
847 }; | |
848 | |
849 #ifndef TARGET_OS_FAMILY_windows | |
850 // Suspend/resume support | |
851 // Protocol: | |
852 // | |
853 // a thread starts in SR_RUNNING | |
854 // | |
855 // SR_RUNNING can go to | |
856 // * SR_SUSPEND_REQUEST when the WatcherThread wants to suspend it | |
857 // SR_SUSPEND_REQUEST can go to | |
858 // * SR_RUNNING if WatcherThread decides it waited for SR_SUSPENDED too long (timeout) | |
859 // * SR_SUSPENDED if the stopped thread receives the signal and switches state | |
860 // SR_SUSPENDED can go to | |
861 // * SR_WAKEUP_REQUEST when the WatcherThread has done the work and wants to resume | |
862 // SR_WAKEUP_REQUEST can go to | |
863 // * SR_RUNNING when the stopped thread receives the signal | |
864 // * SR_WAKEUP_REQUEST on timeout (resend the signal and try again) | |
865 class SuspendResume { | |
866 public: | |
867 enum State { | |
868 SR_RUNNING, | |
869 SR_SUSPEND_REQUEST, | |
870 SR_SUSPENDED, | |
871 SR_WAKEUP_REQUEST | |
872 }; | |
873 | |
874 private: | |
875 volatile State _state; | |
876 | |
877 private: | |
878 /* try to switch state from state "from" to state "to" | |
879 * returns the state set after the method is complete | |
880 */ | |
881 State switch_state(State from, State to); | |
882 | |
883 public: | |
884 SuspendResume() : _state(SR_RUNNING) { } | |
885 | |
886 State state() const { return _state; } | |
887 | |
888 State request_suspend() { | |
889 return switch_state(SR_RUNNING, SR_SUSPEND_REQUEST); | |
890 } | |
891 | |
892 State cancel_suspend() { | |
893 return switch_state(SR_SUSPEND_REQUEST, SR_RUNNING); | |
894 } | |
895 | |
896 State suspended() { | |
897 return switch_state(SR_SUSPEND_REQUEST, SR_SUSPENDED); | |
898 } | |
899 | |
900 State request_wakeup() { | |
901 return switch_state(SR_SUSPENDED, SR_WAKEUP_REQUEST); | |
902 } | |
903 | |
904 State running() { | |
905 return switch_state(SR_WAKEUP_REQUEST, SR_RUNNING); | |
906 } | |
907 | |
908 bool is_running() const { | |
909 return _state == SR_RUNNING; | |
910 } | |
911 | |
912 bool is_suspend_request() const { | |
913 return _state == SR_SUSPEND_REQUEST; | |
914 } | |
915 | |
916 bool is_suspended() const { | |
917 return _state == SR_SUSPENDED; | |
918 } | |
919 }; | |
920 #endif | |
921 | |
922 | |
0 | 923 protected: |
924 static long _rand_seed; // seed for random number generator | |
925 static int _processor_count; // number of processors | |
926 | |
927 static char* format_boot_path(const char* format_string, | |
928 const char* home, | |
929 int home_len, | |
930 char fileSep, | |
931 char pathSep); | |
932 static bool set_boot_path(char fileSep, char pathSep); | |
691 | 933 static char** split_path(const char* path, int* n); |
11151 | 934 |
0 | 935 }; |
936 | |
937 // Note that "PAUSE" is almost always used with synchronization | |
938 // so arguably we should provide Atomic::SpinPause() instead | |
939 // of the global SpinPause() with C linkage. | |
940 // It'd also be eligible for inlining on many platforms. | |
941 | |
11127 | 942 extern "C" int SpinPause(); |
1972 | 943 |
944 #endif // SHARE_VM_RUNTIME_OS_HPP |