Mercurial > hg > graal-compiler
annotate src/share/vm/utilities/debug.cpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 6c5b7a6becc8 |
| children | 145ffab733e7 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "code/codeCache.hpp" | |
| 28 #include "code/icBuffer.hpp" | |
| 29 #include "code/nmethod.hpp" | |
| 30 #include "code/vtableStubs.hpp" | |
| 31 #include "compiler/compileBroker.hpp" | |
| 32 #include "compiler/disassembler.hpp" | |
| 33 #include "gc_implementation/shared/markSweep.hpp" | |
| 34 #include "gc_interface/collectedHeap.hpp" | |
| 35 #include "interpreter/bytecodeHistogram.hpp" | |
| 36 #include "interpreter/interpreter.hpp" | |
| 37 #include "memory/resourceArea.hpp" | |
| 38 #include "memory/universe.hpp" | |
| 39 #include "oops/oop.inline.hpp" | |
| 40 #include "prims/privilegedStack.hpp" | |
| 41 #include "runtime/arguments.hpp" | |
| 42 #include "runtime/frame.hpp" | |
| 43 #include "runtime/java.hpp" | |
| 44 #include "runtime/sharedRuntime.hpp" | |
| 45 #include "runtime/stubCodeGenerator.hpp" | |
| 46 #include "runtime/stubRoutines.hpp" | |
| 47 #include "runtime/vframe.hpp" | |
| 48 #include "services/heapDumper.hpp" | |
| 49 #include "utilities/defaultStream.hpp" | |
| 50 #include "utilities/events.hpp" | |
| 51 #include "utilities/top.hpp" | |
| 52 #include "utilities/vmError.hpp" | |
| 53 #ifdef TARGET_OS_FAMILY_linux | |
| 54 # include "os_linux.inline.hpp" | |
| 55 # include "thread_linux.inline.hpp" | |
| 56 #endif | |
| 57 #ifdef TARGET_OS_FAMILY_solaris | |
| 58 # include "os_solaris.inline.hpp" | |
| 59 # include "thread_solaris.inline.hpp" | |
| 60 #endif | |
| 61 #ifdef TARGET_OS_FAMILY_windows | |
| 62 # include "os_windows.inline.hpp" | |
| 63 # include "thread_windows.inline.hpp" | |
| 64 #endif | |
| 3960 | 65 #ifdef TARGET_OS_FAMILY_bsd |
| 66 # include "os_bsd.inline.hpp" | |
| 67 # include "thread_bsd.inline.hpp" | |
| 68 #endif | |
| 0 | 69 |
| 70 #ifndef ASSERT | |
| 71 # ifdef _DEBUG | |
| 72 // NOTE: don't turn the lines below into a comment -- if you're getting | |
| 73 // a compile error here, change the settings to define ASSERT | |
| 74 ASSERT should be defined when _DEBUG is defined. It is not intended to be used for debugging | |
| 75 functions that do not slow down the system too much and thus can be left in optimized code. | |
| 76 On the other hand, the code should not be included in a production version. | |
| 77 # endif // _DEBUG | |
| 78 #endif // ASSERT | |
| 79 | |
| 80 | |
| 81 #ifdef _DEBUG | |
| 82 # ifndef ASSERT | |
| 83 configuration error: ASSERT must be defined in debug version | |
| 84 # endif // ASSERT | |
| 85 #endif // _DEBUG | |
| 86 | |
| 87 | |
| 88 #ifdef PRODUCT | |
| 89 # if -defined _DEBUG || -defined ASSERT | |
| 90 configuration error: ASSERT et al. must not be defined in PRODUCT version | |
| 91 # endif | |
| 92 #endif // PRODUCT | |
| 93 | |
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94 FormatBufferResource::FormatBufferResource(const char * format, ...) |
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95 : FormatBufferBase((char*)resource_allocate_bytes(RES_BUFSZ)) { |
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96 va_list argp; |
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97 va_start(argp, format); |
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98 jio_vsnprintf(_buf, RES_BUFSZ, format, argp); |
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99 va_end(argp); |
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100 } |
| 0 | 101 |
| 102 void warning(const char* format, ...) { | |
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103 if (PrintWarnings) { |
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104 // In case error happens before init or during shutdown |
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105 if (tty == NULL) ostream_init(); |
| 0 | 106 |
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107 tty->print("%s warning: ", VM_Version::vm_name()); |
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108 va_list ap; |
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109 va_start(ap, format); |
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110 tty->vprint_cr(format, ap); |
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111 va_end(ap); |
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112 } |
| 0 | 113 if (BreakAtWarning) BREAKPOINT; |
| 114 } | |
| 115 | |
| 116 #ifndef PRODUCT | |
| 117 | |
| 118 #define is_token_break(ch) (isspace(ch) || (ch) == ',') | |
| 119 | |
| 120 static const char* last_file_name = NULL; | |
| 121 static int last_line_no = -1; | |
| 122 | |
| 123 // assert/guarantee/... may happen very early during VM initialization. | |
| 124 // Don't rely on anything that is initialized by Threads::create_vm(). For | |
| 125 // example, don't use tty. | |
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126 bool error_is_suppressed(const char* file_name, int line_no) { |
| 0 | 127 // The following 1-element cache requires that passed-in |
| 128 // file names are always only constant literals. | |
| 129 if (file_name == last_file_name && line_no == last_line_no) return true; | |
| 130 | |
| 131 int file_name_len = (int)strlen(file_name); | |
| 132 char separator = os::file_separator()[0]; | |
| 133 const char* base_name = strrchr(file_name, separator); | |
| 134 if (base_name == NULL) | |
| 135 base_name = file_name; | |
| 136 | |
| 137 // scan the SuppressErrorAt option | |
| 138 const char* cp = SuppressErrorAt; | |
| 139 for (;;) { | |
| 140 const char* sfile; | |
| 141 int sfile_len; | |
| 142 int sline; | |
| 143 bool noisy; | |
| 144 while ((*cp) != '\0' && is_token_break(*cp)) cp++; | |
| 145 if ((*cp) == '\0') break; | |
| 146 sfile = cp; | |
| 147 while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++; | |
| 148 sfile_len = cp - sfile; | |
| 149 if ((*cp) == ':') cp++; | |
| 150 sline = 0; | |
| 151 while ((*cp) != '\0' && isdigit(*cp)) { | |
| 152 sline *= 10; | |
| 153 sline += (*cp) - '0'; | |
| 154 cp++; | |
| 155 } | |
| 156 // "file:line!" means the assert suppression is not silent | |
| 157 noisy = ((*cp) == '!'); | |
| 158 while ((*cp) != '\0' && !is_token_break(*cp)) cp++; | |
| 159 // match the line | |
| 160 if (sline != 0) { | |
| 161 if (sline != line_no) continue; | |
| 162 } | |
| 163 // match the file | |
| 164 if (sfile_len > 0) { | |
| 165 const char* look = file_name; | |
| 166 const char* look_max = file_name + file_name_len - sfile_len; | |
| 167 const char* foundp; | |
| 168 bool match = false; | |
| 169 while (!match | |
| 170 && (foundp = strchr(look, sfile[0])) != NULL | |
| 171 && foundp <= look_max) { | |
| 172 match = true; | |
| 173 for (int i = 1; i < sfile_len; i++) { | |
| 174 if (sfile[i] != foundp[i]) { | |
| 175 match = false; | |
| 176 break; | |
| 177 } | |
| 178 } | |
| 179 look = foundp + 1; | |
| 180 } | |
| 181 if (!match) continue; | |
| 182 } | |
| 183 // got a match! | |
| 184 if (noisy) { | |
| 185 fdStream out(defaultStream::output_fd()); | |
| 186 out.print_raw("[error suppressed at "); | |
| 187 out.print_raw(base_name); | |
| 188 char buf[16]; | |
| 189 jio_snprintf(buf, sizeof(buf), ":%d]", line_no); | |
| 190 out.print_raw_cr(buf); | |
| 191 } else { | |
| 192 // update 1-element cache for fast silent matches | |
| 193 last_file_name = file_name; | |
| 194 last_line_no = line_no; | |
| 195 } | |
| 196 return true; | |
| 197 } | |
| 198 | |
| 199 if (!is_error_reported()) { | |
| 200 // print a friendly hint: | |
| 201 fdStream out(defaultStream::output_fd()); | |
| 202 out.print_raw_cr("# To suppress the following error report, specify this argument"); | |
| 203 out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt="); | |
| 204 out.print_raw (base_name); | |
| 205 char buf[16]; | |
| 206 jio_snprintf(buf, sizeof(buf), ":%d", line_no); | |
| 207 out.print_raw_cr(buf); | |
| 208 } | |
| 209 return false; | |
| 210 } | |
| 211 | |
| 212 #undef is_token_break | |
| 213 | |
| 214 #else | |
| 215 | |
| 216 // Place-holder for non-existent suppression check: | |
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217 #define error_is_suppressed(file_name, line_no) (false) |
| 0 | 218 |
| 4006 | 219 #endif // !PRODUCT |
| 0 | 220 |
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221 void report_vm_error(const char* file, int line, const char* error_msg, |
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222 const char* detail_msg) |
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223 { |
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224 if (Debugging || error_is_suppressed(file, line)) return; |
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225 Thread* const thread = ThreadLocalStorage::get_thread_slow(); |
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226 VMError err(thread, file, line, error_msg, detail_msg); |
| 0 | 227 err.report_and_die(); |
| 228 } | |
| 229 | |
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230 void report_fatal(const char* file, int line, const char* message) |
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231 { |
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232 report_vm_error(file, line, "fatal error", message); |
| 0 | 233 } |
| 234 | |
| 235 // Used by report_vm_out_of_memory to detect recursion. | |
| 236 static jint _exiting_out_of_mem = 0; | |
| 237 | |
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238 void report_vm_out_of_memory(const char* file, int line, size_t size, |
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239 const char* message) { |
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240 if (Debugging) return; |
| 0 | 241 |
| 242 // We try to gather additional information for the first out of memory | |
| 243 // error only; gathering additional data might cause an allocation and a | |
| 244 // recursive out_of_memory condition. | |
| 245 | |
| 246 const jint exiting = 1; | |
| 247 // If we succeed in changing the value, we're the first one in. | |
| 248 bool first_time_here = Atomic::xchg(exiting, &_exiting_out_of_mem) != exiting; | |
| 249 | |
| 250 if (first_time_here) { | |
| 251 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
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252 VMError(thread, file, line, size, message).report_and_die(); |
| 0 | 253 } |
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254 |
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255 // Dump core and abort |
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256 vm_abort(true); |
| 0 | 257 } |
| 258 | |
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259 void report_should_not_call(const char* file, int line) { |
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260 report_vm_error(file, line, "ShouldNotCall()"); |
| 0 | 261 } |
| 262 | |
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263 void report_should_not_reach_here(const char* file, int line) { |
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264 report_vm_error(file, line, "ShouldNotReachHere()"); |
| 0 | 265 } |
| 266 | |
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267 void report_should_not_reach_here2(const char* file, int line, const char* message) { |
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268 report_vm_error(file, line, "ShouldNotReachHere()", message); |
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269 } |
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270 |
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271 void report_unimplemented(const char* file, int line) { |
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272 report_vm_error(file, line, "Unimplemented()"); |
| 0 | 273 } |
| 274 | |
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275 void report_untested(const char* file, int line, const char* message) { |
| 0 | 276 #ifndef PRODUCT |
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277 warning("Untested: %s in %s: %d\n", message, file, line); |
| 4006 | 278 #endif // !PRODUCT |
| 0 | 279 } |
| 280 | |
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281 void report_out_of_shared_space(SharedSpaceType shared_space) { |
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282 static const char* name[] = { |
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283 "native memory for metadata", |
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284 "shared read only space", |
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285 "shared read write space", |
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286 "shared miscellaneous data space" |
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287 }; |
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288 static const char* flag[] = { |
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289 "Metaspace", |
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290 "SharedReadOnlySize", |
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291 "SharedReadWriteSize", |
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292 "SharedMiscDataSize" |
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293 }; |
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294 |
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295 warning("\nThe %s is not large enough\n" |
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296 "to preload requested classes. Use -XX:%s=\n" |
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297 "to increase the initial size of %s.\n", |
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298 name[shared_space], flag[shared_space], name[shared_space]); |
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299 exit(2); |
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300 } |
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301 |
| 0 | 302 void report_java_out_of_memory(const char* message) { |
| 303 static jint out_of_memory_reported = 0; | |
| 304 | |
| 305 // A number of threads may attempt to report OutOfMemoryError at around the | |
| 306 // same time. To avoid dumping the heap or executing the data collection | |
| 307 // commands multiple times we just do it once when the first threads reports | |
| 308 // the error. | |
| 309 if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) { | |
| 310 // create heap dump before OnOutOfMemoryError commands are executed | |
| 311 if (HeapDumpOnOutOfMemoryError) { | |
| 312 tty->print_cr("java.lang.OutOfMemoryError: %s", message); | |
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313 HeapDumper::dump_heap_from_oome(); |
| 0 | 314 } |
| 315 | |
| 316 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { | |
| 317 VMError err(message); | |
| 318 err.report_java_out_of_memory(); | |
| 319 } | |
| 320 } | |
| 321 } | |
| 322 | |
| 323 static bool error_reported = false; | |
| 324 | |
| 325 // call this when the VM is dying--it might loosen some asserts | |
| 326 void set_error_reported() { | |
| 327 error_reported = true; | |
| 328 } | |
| 329 | |
| 330 bool is_error_reported() { | |
| 331 return error_reported; | |
| 332 } | |
| 333 | |
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334 #ifndef PRODUCT |
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335 #include <signal.h> |
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336 |
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337 void test_error_handler(size_t test_num) |
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338 { |
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339 if (test_num == 0) return; |
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340 |
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341 // If asserts are disabled, use the corresponding guarantee instead. |
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342 size_t n = test_num; |
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343 NOT_DEBUG(if (n <= 2) n += 2); |
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344 |
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345 const char* const str = "hello"; |
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346 const size_t num = (size_t)os::vm_page_size(); |
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347 |
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348 const char* const eol = os::line_separator(); |
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349 const char* const msg = "this message should be truncated during formatting"; |
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350 |
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351 // Keep this in sync with test/runtime/6888954/vmerrors.sh. |
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352 switch (n) { |
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353 case 1: assert(str == NULL, "expected null"); |
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354 case 2: assert(num == 1023 && *str == 'X', |
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355 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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356 case 3: guarantee(str == NULL, "expected null"); |
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357 case 4: guarantee(num == 1023 && *str == 'X', |
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358 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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359 case 5: fatal("expected null"); |
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360 case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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361 case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# " |
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362 "%s%s# %s%s# %s%s# %s%s# %s%s# " |
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363 "%s%s# %s%s# %s%s# %s%s# %s", |
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364 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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365 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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366 msg, eol, msg, eol, msg, eol, msg, eol, msg)); |
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367 case 8: vm_exit_out_of_memory(num, "ChunkPool::allocate"); |
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368 case 9: ShouldNotCallThis(); |
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369 case 10: ShouldNotReachHere(); |
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370 case 11: Unimplemented(); |
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371 // This is last because it does not generate an hs_err* file on Windows. |
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372 case 12: os::signal_raise(SIGSEGV); |
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373 |
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374 default: ShouldNotReachHere(); |
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375 } |
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376 } |
| 4006 | 377 #endif // !PRODUCT |
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378 |
| 0 | 379 // ------ helper functions for debugging go here ------------ |
| 380 | |
| 381 // All debug entries should be wrapped with a stack allocated | |
| 382 // Command object. It makes sure a resource mark is set and | |
| 383 // flushes the logfile to prevent file sharing problems. | |
| 384 | |
| 385 class Command : public StackObj { | |
| 386 private: | |
| 387 ResourceMark rm; | |
| 388 ResetNoHandleMark rnhm; | |
| 389 HandleMark hm; | |
| 390 bool debug_save; | |
| 391 public: | |
| 392 static int level; | |
| 393 Command(const char* str) { | |
| 394 debug_save = Debugging; | |
| 395 Debugging = true; | |
| 396 if (level++ > 0) return; | |
| 397 tty->cr(); | |
| 398 tty->print_cr("\"Executing %s\"", str); | |
| 399 } | |
| 400 | |
| 4006 | 401 ~Command() { |
| 402 tty->flush(); | |
| 403 Debugging = debug_save; | |
| 404 level--; | |
| 405 } | |
| 0 | 406 }; |
| 407 | |
| 408 int Command::level = 0; | |
| 409 | |
| 4006 | 410 #ifndef PRODUCT |
| 411 | |
| 0 | 412 extern "C" void blob(CodeBlob* cb) { |
| 413 Command c("blob"); | |
| 414 cb->print(); | |
| 415 } | |
| 416 | |
| 417 | |
| 418 extern "C" void dump_vtable(address p) { | |
| 419 Command c("dump_vtable"); | |
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420 Klass* k = (Klass*)p; |
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421 InstanceKlass::cast(k)->vtable()->print(); |
| 0 | 422 } |
| 423 | |
| 424 | |
| 425 extern "C" void nm(intptr_t p) { | |
| 426 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) | |
| 427 Command c("nm"); | |
| 428 CodeBlob* cb = CodeCache::find_blob((address)p); | |
| 429 if (cb == NULL) { | |
| 430 tty->print_cr("NULL"); | |
| 431 } else { | |
| 432 cb->print(); | |
| 433 } | |
| 434 } | |
| 435 | |
| 436 | |
| 437 extern "C" void disnm(intptr_t p) { | |
| 438 Command c("disnm"); | |
| 439 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 2008 | 440 nmethod* nm = cb->as_nmethod_or_null(); |
| 441 if (nm) { | |
| 442 nm->print(); | |
| 443 Disassembler::decode(nm); | |
| 444 } else { | |
| 445 cb->print(); | |
| 446 Disassembler::decode(cb); | |
| 447 } | |
| 0 | 448 } |
| 449 | |
| 450 | |
| 451 extern "C" void printnm(intptr_t p) { | |
| 452 char buffer[256]; | |
| 453 sprintf(buffer, "printnm: " INTPTR_FORMAT, p); | |
| 454 Command c(buffer); | |
| 455 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 456 if (cb->is_nmethod()) { | |
| 457 nmethod* nm = (nmethod*)cb; | |
| 458 nm->print_nmethod(true); | |
| 459 } | |
| 460 } | |
| 461 | |
| 462 | |
| 463 extern "C" void universe() { | |
| 464 Command c("universe"); | |
| 465 Universe::print(); | |
| 466 } | |
| 467 | |
| 468 | |
| 469 extern "C" void verify() { | |
| 470 // try to run a verify on the entire system | |
| 471 // note: this may not be safe if we're not at a safepoint; for debugging, | |
| 472 // this manipulates the safepoint settings to avoid assertion failures | |
| 473 Command c("universe verify"); | |
| 474 bool safe = SafepointSynchronize::is_at_safepoint(); | |
| 475 if (!safe) { | |
| 476 tty->print_cr("warning: not at safepoint -- verify may fail"); | |
| 477 SafepointSynchronize::set_is_at_safepoint(); | |
| 478 } | |
| 479 // Ensure Eden top is correct before verification | |
| 480 Universe::heap()->prepare_for_verify(); | |
| 481 Universe::verify(true); | |
| 482 if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); | |
| 483 } | |
| 484 | |
| 485 | |
| 486 extern "C" void pp(void* p) { | |
| 487 Command c("pp"); | |
| 488 FlagSetting fl(PrintVMMessages, true); | |
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489 FlagSetting f2(DisplayVMOutput, true); |
| 0 | 490 if (Universe::heap()->is_in(p)) { |
| 491 oop obj = oop(p); | |
| 492 obj->print(); | |
| 493 } else { | |
| 4006 | 494 tty->print(PTR_FORMAT, p); |
| 0 | 495 } |
| 496 } | |
| 497 | |
| 498 | |
| 499 // pv: print vm-printable object | |
| 500 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } | |
| 501 extern "C" void findpc(intptr_t x); | |
| 502 | |
| 4006 | 503 #endif // !PRODUCT |
| 504 | |
| 0 | 505 extern "C" void ps() { // print stack |
| 4006 | 506 if (Thread::current() == NULL) return; |
| 0 | 507 Command c("ps"); |
| 508 | |
| 509 | |
| 510 // Prints the stack of the current Java thread | |
| 511 JavaThread* p = JavaThread::active(); | |
| 512 tty->print(" for thread: "); | |
| 513 p->print(); | |
| 514 tty->cr(); | |
| 515 | |
| 516 if (p->has_last_Java_frame()) { | |
| 517 // If the last_Java_fp is set we are in C land and | |
| 518 // can call the standard stack_trace function. | |
| 4006 | 519 #ifdef PRODUCT |
| 520 p->print_stack(); | |
| 521 } else { | |
| 522 tty->print_cr("Cannot find the last Java frame, printing stack disabled."); | |
| 523 #else // !PRODUCT | |
| 0 | 524 p->trace_stack(); |
| 525 } else { | |
| 526 frame f = os::current_frame(); | |
| 527 RegisterMap reg_map(p); | |
| 528 f = f.sender(®_map); | |
| 529 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); | |
| 530 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); | |
| 531 pd_ps(f); | |
| 4006 | 532 #endif // PRODUCT |
| 0 | 533 } |
| 534 | |
| 535 } | |
| 536 | |
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537 extern "C" void pfl() { |
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538 // print frame layout |
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539 Command c("pfl"); |
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540 JavaThread* p = JavaThread::active(); |
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541 tty->print(" for thread: "); |
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542 p->print(); |
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543 tty->cr(); |
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544 if (p->has_last_Java_frame()) { |
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545 p->print_frame_layout(); |
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546 } |
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547 } |
| 0 | 548 |
| 4006 | 549 #ifndef PRODUCT |
| 550 | |
| 0 | 551 extern "C" void psf() { // print stack frames |
| 552 { | |
| 553 Command c("psf"); | |
| 554 JavaThread* p = JavaThread::active(); | |
| 555 tty->print(" for thread: "); | |
| 556 p->print(); | |
| 557 tty->cr(); | |
| 558 if (p->has_last_Java_frame()) { | |
| 559 p->trace_frames(); | |
| 560 } | |
| 561 } | |
| 562 } | |
| 563 | |
| 564 | |
| 565 extern "C" void threads() { | |
| 566 Command c("threads"); | |
| 567 Threads::print(false, true); | |
| 568 } | |
| 569 | |
| 570 | |
| 571 extern "C" void psd() { | |
| 572 Command c("psd"); | |
| 573 SystemDictionary::print(); | |
| 574 } | |
| 575 | |
| 576 | |
| 577 extern "C" void safepoints() { | |
| 578 Command c("safepoints"); | |
| 579 SafepointSynchronize::print_state(); | |
| 580 } | |
| 581 | |
| 4006 | 582 #endif // !PRODUCT |
| 0 | 583 |
| 584 extern "C" void pss() { // print all stacks | |
| 4006 | 585 if (Thread::current() == NULL) return; |
| 0 | 586 Command c("pss"); |
| 4006 | 587 Threads::print(true, PRODUCT_ONLY(false) NOT_PRODUCT(true)); |
| 0 | 588 } |
| 589 | |
| 4006 | 590 #ifndef PRODUCT |
| 0 | 591 |
| 592 extern "C" void debug() { // to set things up for compiler debugging | |
| 593 Command c("debug"); | |
| 594 WizardMode = true; | |
| 595 PrintVMMessages = PrintCompilation = true; | |
| 596 PrintInlining = PrintAssembly = true; | |
| 597 tty->flush(); | |
| 598 } | |
| 599 | |
| 600 | |
| 601 extern "C" void ndebug() { // undo debug() | |
| 602 Command c("ndebug"); | |
| 603 PrintCompilation = false; | |
| 604 PrintInlining = PrintAssembly = false; | |
| 605 tty->flush(); | |
| 606 } | |
| 607 | |
| 608 | |
| 609 extern "C" void flush() { | |
| 610 Command c("flush"); | |
| 611 tty->flush(); | |
| 612 } | |
| 613 | |
| 4944 | 614 extern "C" void events() { |
| 615 Command c("events"); | |
| 616 Events::print(); | |
| 617 } | |
| 0 | 618 |
| 619 // Given a heap address that was valid before the most recent GC, if | |
| 620 // the oop that used to contain it is still live, prints the new | |
| 621 // location of the oop and the address. Useful for tracking down | |
| 622 // certain kinds of naked oop and oop map bugs. | |
| 623 extern "C" void pnl(intptr_t old_heap_addr) { | |
| 624 // Print New Location of old heap address | |
| 625 Command c("pnl"); | |
| 626 #ifndef VALIDATE_MARK_SWEEP | |
| 627 tty->print_cr("Requires build with VALIDATE_MARK_SWEEP defined (debug build) and RecordMarkSweepCompaction enabled"); | |
| 628 #else | |
| 629 MarkSweep::print_new_location_of_heap_address((HeapWord*) old_heap_addr); | |
| 630 #endif | |
| 631 } | |
| 632 | |
| 633 | |
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634 extern "C" Method* findm(intptr_t pc) { |
| 0 | 635 Command c("findm"); |
| 636 nmethod* nm = CodeCache::find_nmethod((address)pc); | |
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637 return (nm == NULL) ? (Method*)NULL : nm->method(); |
| 0 | 638 } |
| 639 | |
| 640 | |
| 641 extern "C" nmethod* findnm(intptr_t addr) { | |
| 642 Command c("findnm"); | |
| 643 return CodeCache::find_nmethod((address)addr); | |
| 644 } | |
| 645 | |
| 646 static address same_page(address x, address y) { | |
| 647 intptr_t page_bits = -os::vm_page_size(); | |
| 648 if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) { | |
| 649 return x; | |
| 650 } else if (x > y) { | |
| 651 return (address)(intptr_t(y) | ~page_bits) + 1; | |
| 652 } else { | |
| 653 return (address)(intptr_t(y) & page_bits); | |
| 654 } | |
| 655 } | |
| 656 | |
| 657 | |
| 658 // Another interface that isn't ambiguous in dbx. | |
| 659 // Can we someday rename the other find to hsfind? | |
| 660 extern "C" void hsfind(intptr_t x) { | |
| 661 Command c("hsfind"); | |
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662 os::print_location(tty, x, false); |
| 0 | 663 } |
| 664 | |
| 665 | |
| 666 extern "C" void find(intptr_t x) { | |
| 667 Command c("find"); | |
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668 os::print_location(tty, x, false); |
| 0 | 669 } |
| 670 | |
| 671 | |
| 672 extern "C" void findpc(intptr_t x) { | |
| 673 Command c("findpc"); | |
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674 os::print_location(tty, x, true); |
| 0 | 675 } |
| 676 | |
| 677 | |
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678 // Need method pointer to find bcp, when not in permgen. |
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679 extern "C" void findbcp(intptr_t method, intptr_t bcp) { |
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680 Command c("findbcp"); |
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681 Method* mh = (Method*)method; |
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682 if (!mh->is_native()) { |
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683 tty->print_cr("bci_from(%p) = %d; print_codes():", |
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684 mh, mh->bci_from(address(bcp))); |
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685 mh->print_codes_on(tty); |
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686 } |
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687 } |
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688 |
| 0 | 689 // int versions of all methods to avoid having to type type casts in the debugger |
| 690 | |
| 691 void pp(intptr_t p) { pp((void*)p); } | |
| 692 void pp(oop p) { pp((void*)p); } | |
| 693 | |
| 694 void help() { | |
| 695 Command c("help"); | |
| 696 tty->print_cr("basic"); | |
| 697 tty->print_cr(" pp(void* p) - try to make sense of p"); | |
| 698 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); | |
| 699 tty->print_cr(" ps() - print current thread stack"); | |
| 700 tty->print_cr(" pss() - print all thread stacks"); | |
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701 tty->print_cr(" pm(int pc) - print Method* given compiled PC"); |
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702 tty->print_cr(" findm(intptr_t pc) - finds Method*"); |
| 0 | 703 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); |
| 704 | |
| 705 tty->print_cr("misc."); | |
| 706 tty->print_cr(" flush() - flushes the log file"); | |
| 4944 | 707 tty->print_cr(" events() - dump events from ring buffers"); |
| 0 | 708 |
| 709 | |
| 710 tty->print_cr("compiler debugging"); | |
| 711 tty->print_cr(" debug() - to set things up for compiler debugging"); | |
| 712 tty->print_cr(" ndebug() - undo debug"); | |
| 713 } | |
| 714 | |
| 715 #if 0 | |
| 716 | |
| 717 // BobV's command parser for debugging on windows when nothing else works. | |
| 718 | |
| 719 enum CommandID { | |
| 720 CMDID_HELP, | |
| 721 CMDID_QUIT, | |
| 722 CMDID_HSFIND, | |
| 723 CMDID_PSS, | |
| 724 CMDID_PS, | |
| 725 CMDID_PSF, | |
| 726 CMDID_FINDM, | |
| 727 CMDID_FINDNM, | |
| 728 CMDID_PP, | |
| 729 CMDID_BPT, | |
| 730 CMDID_EXIT, | |
| 731 CMDID_VERIFY, | |
| 732 CMDID_THREADS, | |
| 733 CMDID_ILLEGAL = 99 | |
| 734 }; | |
| 735 | |
| 736 struct CommandParser { | |
| 737 char *name; | |
| 738 CommandID code; | |
| 739 char *description; | |
| 740 }; | |
| 741 | |
| 742 struct CommandParser CommandList[] = { | |
| 743 (char *)"help", CMDID_HELP, " Dump this list", | |
| 744 (char *)"quit", CMDID_QUIT, " Return from this routine", | |
| 745 (char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address", | |
| 746 (char *)"ps", CMDID_PS, " Print Current Thread Stack Trace", | |
| 747 (char *)"pss", CMDID_PSS, " Print All Thread Stack Trace", | |
| 748 (char *)"psf", CMDID_PSF, " Print All Stack Frames", | |
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749 (char *)"findm", CMDID_FINDM, " Find a Method* from a PC", |
| 0 | 750 (char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC", |
| 751 (char *)"pp", CMDID_PP, " Find out something about a pointer", | |
| 752 (char *)"break", CMDID_BPT, " Execute a breakpoint", | |
| 753 (char *)"exitvm", CMDID_EXIT, "Exit the VM", | |
| 754 (char *)"verify", CMDID_VERIFY, "Perform a Heap Verify", | |
| 755 (char *)"thread", CMDID_THREADS, "Dump Info on all Threads", | |
| 756 (char *)0, CMDID_ILLEGAL | |
| 757 }; | |
| 758 | |
| 759 | |
| 760 // get_debug_command() | |
| 761 // | |
| 762 // Read a command from standard input. | |
| 763 // This is useful when you have a debugger | |
| 764 // which doesn't support calling into functions. | |
| 765 // | |
| 766 void get_debug_command() | |
| 767 { | |
| 768 ssize_t count; | |
| 769 int i,j; | |
| 770 bool gotcommand; | |
| 771 intptr_t addr; | |
| 772 char buffer[256]; | |
| 773 nmethod *nm; | |
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774 Method* m; |
| 0 | 775 |
| 776 tty->print_cr("You have entered the diagnostic command interpreter"); | |
| 777 tty->print("The supported commands are:\n"); | |
| 778 for ( i=0; ; i++ ) { | |
| 779 if ( CommandList[i].code == CMDID_ILLEGAL ) | |
| 780 break; | |
| 781 tty->print_cr(" %s \n", CommandList[i].name ); | |
| 782 } | |
| 783 | |
| 784 while ( 1 ) { | |
| 785 gotcommand = false; | |
| 786 tty->print("Please enter a command: "); | |
| 787 count = scanf("%s", buffer) ; | |
| 788 if ( count >=0 ) { | |
| 789 for ( i=0; ; i++ ) { | |
| 790 if ( CommandList[i].code == CMDID_ILLEGAL ) { | |
| 791 if (!gotcommand) tty->print("Invalid command, please try again\n"); | |
| 792 break; | |
| 793 } | |
| 794 if ( strcmp(buffer, CommandList[i].name) == 0 ) { | |
| 795 gotcommand = true; | |
| 796 switch ( CommandList[i].code ) { | |
| 797 case CMDID_PS: | |
| 798 ps(); | |
| 799 break; | |
| 800 case CMDID_PSS: | |
| 801 pss(); | |
| 802 break; | |
| 803 case CMDID_PSF: | |
| 804 psf(); | |
| 805 break; | |
| 806 case CMDID_FINDM: | |
| 807 tty->print("Please enter the hex addr to pass to findm: "); | |
| 808 scanf("%I64X", &addr); | |
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809 m = (Method*)findm(addr); |
| 0 | 810 tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m); |
| 811 break; | |
| 812 case CMDID_FINDNM: | |
| 813 tty->print("Please enter the hex addr to pass to findnm: "); | |
| 814 scanf("%I64X", &addr); | |
| 815 nm = (nmethod*)findnm(addr); | |
| 816 tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm); | |
| 817 break; | |
| 818 case CMDID_PP: | |
| 819 tty->print("Please enter the hex addr to pass to pp: "); | |
| 820 scanf("%I64X", &addr); | |
| 821 pp((void*)addr); | |
| 822 break; | |
| 823 case CMDID_EXIT: | |
| 824 exit(0); | |
| 825 case CMDID_HELP: | |
| 826 tty->print("Here are the supported commands: "); | |
| 827 for ( j=0; ; j++ ) { | |
| 828 if ( CommandList[j].code == CMDID_ILLEGAL ) | |
| 829 break; | |
| 830 tty->print_cr(" %s -- %s\n", CommandList[j].name, | |
| 831 CommandList[j].description ); | |
| 832 } | |
| 833 break; | |
| 834 case CMDID_QUIT: | |
| 835 return; | |
| 836 break; | |
| 837 case CMDID_BPT: | |
| 838 BREAKPOINT; | |
| 839 break; | |
| 840 case CMDID_VERIFY: | |
| 841 verify();; | |
| 842 break; | |
| 843 case CMDID_THREADS: | |
| 844 threads();; | |
| 845 break; | |
| 846 case CMDID_HSFIND: | |
| 847 tty->print("Please enter the hex addr to pass to hsfind: "); | |
| 848 scanf("%I64X", &addr); | |
| 849 tty->print("Calling hsfind(0x%I64X)\n", addr); | |
| 850 hsfind(addr); | |
| 851 break; | |
| 852 default: | |
| 853 case CMDID_ILLEGAL: | |
| 854 break; | |
| 855 } | |
| 856 } | |
| 857 } | |
| 858 } | |
| 859 } | |
| 860 } | |
| 861 #endif | |
| 862 | |
| 4006 | 863 #endif // !PRODUCT |