Mercurial > hg > truffle
annotate src/share/vm/utilities/debug.cpp @ 2008:2f644f85485d
6961690: load oops from constant table on SPARC
Summary: oops should be loaded from the constant table of an nmethod instead of materializing them with a long code sequence.
Reviewed-by: never, kvn
| author | twisti |
|---|---|
| date | Fri, 03 Dec 2010 01:34:31 -0800 |
| parents | f95d63e2154a |
| children | 36c186bcc085 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2010, 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 | |
| 0 | 65 |
| 66 #ifndef ASSERT | |
| 67 # ifdef _DEBUG | |
| 68 // NOTE: don't turn the lines below into a comment -- if you're getting | |
| 69 // a compile error here, change the settings to define ASSERT | |
| 70 ASSERT should be defined when _DEBUG is defined. It is not intended to be used for debugging | |
| 71 functions that do not slow down the system too much and thus can be left in optimized code. | |
| 72 On the other hand, the code should not be included in a production version. | |
| 73 # endif // _DEBUG | |
| 74 #endif // ASSERT | |
| 75 | |
| 76 | |
| 77 #ifdef _DEBUG | |
| 78 # ifndef ASSERT | |
| 79 configuration error: ASSERT must be defined in debug version | |
| 80 # endif // ASSERT | |
| 81 #endif // _DEBUG | |
| 82 | |
| 83 | |
| 84 #ifdef PRODUCT | |
| 85 # if -defined _DEBUG || -defined ASSERT | |
| 86 configuration error: ASSERT et al. must not be defined in PRODUCT version | |
| 87 # endif | |
| 88 #endif // PRODUCT | |
| 89 | |
| 90 | |
| 91 void warning(const char* format, ...) { | |
|
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92 if (PrintWarnings) { |
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93 // In case error happens before init or during shutdown |
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94 if (tty == NULL) ostream_init(); |
| 0 | 95 |
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96 tty->print("%s warning: ", VM_Version::vm_name()); |
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97 va_list ap; |
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98 va_start(ap, format); |
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99 tty->vprint_cr(format, ap); |
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100 va_end(ap); |
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101 } |
| 0 | 102 if (BreakAtWarning) BREAKPOINT; |
| 103 } | |
| 104 | |
| 105 #ifndef PRODUCT | |
| 106 | |
| 107 #define is_token_break(ch) (isspace(ch) || (ch) == ',') | |
| 108 | |
| 109 static const char* last_file_name = NULL; | |
| 110 static int last_line_no = -1; | |
| 111 | |
| 112 // assert/guarantee/... may happen very early during VM initialization. | |
| 113 // Don't rely on anything that is initialized by Threads::create_vm(). For | |
| 114 // example, don't use tty. | |
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115 bool error_is_suppressed(const char* file_name, int line_no) { |
| 0 | 116 // The following 1-element cache requires that passed-in |
| 117 // file names are always only constant literals. | |
| 118 if (file_name == last_file_name && line_no == last_line_no) return true; | |
| 119 | |
| 120 int file_name_len = (int)strlen(file_name); | |
| 121 char separator = os::file_separator()[0]; | |
| 122 const char* base_name = strrchr(file_name, separator); | |
| 123 if (base_name == NULL) | |
| 124 base_name = file_name; | |
| 125 | |
| 126 // scan the SuppressErrorAt option | |
| 127 const char* cp = SuppressErrorAt; | |
| 128 for (;;) { | |
| 129 const char* sfile; | |
| 130 int sfile_len; | |
| 131 int sline; | |
| 132 bool noisy; | |
| 133 while ((*cp) != '\0' && is_token_break(*cp)) cp++; | |
| 134 if ((*cp) == '\0') break; | |
| 135 sfile = cp; | |
| 136 while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++; | |
| 137 sfile_len = cp - sfile; | |
| 138 if ((*cp) == ':') cp++; | |
| 139 sline = 0; | |
| 140 while ((*cp) != '\0' && isdigit(*cp)) { | |
| 141 sline *= 10; | |
| 142 sline += (*cp) - '0'; | |
| 143 cp++; | |
| 144 } | |
| 145 // "file:line!" means the assert suppression is not silent | |
| 146 noisy = ((*cp) == '!'); | |
| 147 while ((*cp) != '\0' && !is_token_break(*cp)) cp++; | |
| 148 // match the line | |
| 149 if (sline != 0) { | |
| 150 if (sline != line_no) continue; | |
| 151 } | |
| 152 // match the file | |
| 153 if (sfile_len > 0) { | |
| 154 const char* look = file_name; | |
| 155 const char* look_max = file_name + file_name_len - sfile_len; | |
| 156 const char* foundp; | |
| 157 bool match = false; | |
| 158 while (!match | |
| 159 && (foundp = strchr(look, sfile[0])) != NULL | |
| 160 && foundp <= look_max) { | |
| 161 match = true; | |
| 162 for (int i = 1; i < sfile_len; i++) { | |
| 163 if (sfile[i] != foundp[i]) { | |
| 164 match = false; | |
| 165 break; | |
| 166 } | |
| 167 } | |
| 168 look = foundp + 1; | |
| 169 } | |
| 170 if (!match) continue; | |
| 171 } | |
| 172 // got a match! | |
| 173 if (noisy) { | |
| 174 fdStream out(defaultStream::output_fd()); | |
| 175 out.print_raw("[error suppressed at "); | |
| 176 out.print_raw(base_name); | |
| 177 char buf[16]; | |
| 178 jio_snprintf(buf, sizeof(buf), ":%d]", line_no); | |
| 179 out.print_raw_cr(buf); | |
| 180 } else { | |
| 181 // update 1-element cache for fast silent matches | |
| 182 last_file_name = file_name; | |
| 183 last_line_no = line_no; | |
| 184 } | |
| 185 return true; | |
| 186 } | |
| 187 | |
| 188 if (!is_error_reported()) { | |
| 189 // print a friendly hint: | |
| 190 fdStream out(defaultStream::output_fd()); | |
| 191 out.print_raw_cr("# To suppress the following error report, specify this argument"); | |
| 192 out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt="); | |
| 193 out.print_raw (base_name); | |
| 194 char buf[16]; | |
| 195 jio_snprintf(buf, sizeof(buf), ":%d", line_no); | |
| 196 out.print_raw_cr(buf); | |
| 197 } | |
| 198 return false; | |
| 199 } | |
| 200 | |
| 201 #undef is_token_break | |
| 202 | |
| 203 #else | |
| 204 | |
| 205 // Place-holder for non-existent suppression check: | |
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206 #define error_is_suppressed(file_name, line_no) (false) |
| 0 | 207 |
| 208 #endif //PRODUCT | |
| 209 | |
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210 void report_vm_error(const char* file, int line, const char* error_msg, |
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211 const char* detail_msg) |
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212 { |
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213 if (Debugging || error_is_suppressed(file, line)) return; |
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214 Thread* const thread = ThreadLocalStorage::get_thread_slow(); |
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215 VMError err(thread, file, line, error_msg, detail_msg); |
| 0 | 216 err.report_and_die(); |
| 217 } | |
| 218 | |
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219 void report_fatal(const char* file, int line, const char* message) |
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220 { |
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221 report_vm_error(file, line, "fatal error", message); |
| 0 | 222 } |
| 223 | |
| 224 // Used by report_vm_out_of_memory to detect recursion. | |
| 225 static jint _exiting_out_of_mem = 0; | |
| 226 | |
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227 void report_vm_out_of_memory(const char* file, int line, size_t size, |
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228 const char* message) { |
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229 if (Debugging || error_is_suppressed(file, line)) return; |
| 0 | 230 |
| 231 // We try to gather additional information for the first out of memory | |
| 232 // error only; gathering additional data might cause an allocation and a | |
| 233 // recursive out_of_memory condition. | |
| 234 | |
| 235 const jint exiting = 1; | |
| 236 // If we succeed in changing the value, we're the first one in. | |
| 237 bool first_time_here = Atomic::xchg(exiting, &_exiting_out_of_mem) != exiting; | |
| 238 | |
| 239 if (first_time_here) { | |
| 240 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
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241 VMError(thread, file, line, size, message).report_and_die(); |
| 0 | 242 } |
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227
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243 |
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244 // Dump core and abort |
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245 vm_abort(true); |
| 0 | 246 } |
| 247 | |
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248 void report_should_not_call(const char* file, int line) { |
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249 report_vm_error(file, line, "ShouldNotCall()"); |
| 0 | 250 } |
| 251 | |
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252 void report_should_not_reach_here(const char* file, int line) { |
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253 report_vm_error(file, line, "ShouldNotReachHere()"); |
| 0 | 254 } |
| 255 | |
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256 void report_unimplemented(const char* file, int line) { |
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257 report_vm_error(file, line, "Unimplemented()"); |
| 0 | 258 } |
| 259 | |
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260 void report_untested(const char* file, int line, const char* message) { |
| 0 | 261 #ifndef PRODUCT |
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262 warning("Untested: %s in %s: %d\n", message, file, line); |
| 0 | 263 #endif // PRODUCT |
| 264 } | |
| 265 | |
| 266 void report_java_out_of_memory(const char* message) { | |
| 267 static jint out_of_memory_reported = 0; | |
| 268 | |
| 269 // A number of threads may attempt to report OutOfMemoryError at around the | |
| 270 // same time. To avoid dumping the heap or executing the data collection | |
| 271 // commands multiple times we just do it once when the first threads reports | |
| 272 // the error. | |
| 273 if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) { | |
| 274 // create heap dump before OnOutOfMemoryError commands are executed | |
| 275 if (HeapDumpOnOutOfMemoryError) { | |
| 276 tty->print_cr("java.lang.OutOfMemoryError: %s", message); | |
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277 HeapDumper::dump_heap_from_oome(); |
| 0 | 278 } |
| 279 | |
| 280 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { | |
| 281 VMError err(message); | |
| 282 err.report_java_out_of_memory(); | |
| 283 } | |
| 284 } | |
| 285 } | |
| 286 | |
| 287 | |
| 288 extern "C" void ps(); | |
| 289 | |
| 290 static bool error_reported = false; | |
| 291 | |
| 292 // call this when the VM is dying--it might loosen some asserts | |
| 293 void set_error_reported() { | |
| 294 error_reported = true; | |
| 295 } | |
| 296 | |
| 297 bool is_error_reported() { | |
| 298 return error_reported; | |
| 299 } | |
| 300 | |
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301 #ifndef PRODUCT |
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302 #include <signal.h> |
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303 |
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304 void test_error_handler(size_t test_num) |
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305 { |
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306 if (test_num == 0) return; |
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307 |
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308 // If asserts are disabled, use the corresponding guarantee instead. |
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309 size_t n = test_num; |
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310 NOT_DEBUG(if (n <= 2) n += 2); |
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311 |
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312 const char* const str = "hello"; |
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313 const size_t num = (size_t)os::vm_page_size(); |
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314 |
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315 const char* const eol = os::line_separator(); |
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316 const char* const msg = "this message should be truncated during formatting"; |
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317 |
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318 // Keep this in sync with test/runtime/6888954/vmerrors.sh. |
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319 switch (n) { |
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320 case 1: assert(str == NULL, "expected null"); |
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321 case 2: assert(num == 1023 && *str == 'X', |
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322 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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323 case 3: guarantee(str == NULL, "expected null"); |
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324 case 4: guarantee(num == 1023 && *str == 'X', |
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325 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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326 case 5: fatal("expected null"); |
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327 case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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328 case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# " |
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329 "%s%s# %s%s# %s%s# %s%s# %s%s# " |
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330 "%s%s# %s%s# %s%s# %s%s# %s", |
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331 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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332 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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333 msg, eol, msg, eol, msg, eol, msg, eol, msg)); |
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334 case 8: vm_exit_out_of_memory(num, "ChunkPool::allocate"); |
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335 case 9: ShouldNotCallThis(); |
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336 case 10: ShouldNotReachHere(); |
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337 case 11: Unimplemented(); |
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338 // This is last because it does not generate an hs_err* file on Windows. |
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339 case 12: os::signal_raise(SIGSEGV); |
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340 |
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341 default: ShouldNotReachHere(); |
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342 } |
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343 } |
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344 #endif // #ifndef PRODUCT |
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345 |
| 0 | 346 // ------ helper functions for debugging go here ------------ |
| 347 | |
| 348 #ifndef PRODUCT | |
| 349 // All debug entries should be wrapped with a stack allocated | |
| 350 // Command object. It makes sure a resource mark is set and | |
| 351 // flushes the logfile to prevent file sharing problems. | |
| 352 | |
| 353 class Command : public StackObj { | |
| 354 private: | |
| 355 ResourceMark rm; | |
| 356 ResetNoHandleMark rnhm; | |
| 357 HandleMark hm; | |
| 358 bool debug_save; | |
| 359 public: | |
| 360 static int level; | |
| 361 Command(const char* str) { | |
| 362 debug_save = Debugging; | |
| 363 Debugging = true; | |
| 364 if (level++ > 0) return; | |
| 365 tty->cr(); | |
| 366 tty->print_cr("\"Executing %s\"", str); | |
| 367 } | |
| 368 | |
| 369 ~Command() { tty->flush(); Debugging = debug_save; level--; } | |
| 370 }; | |
| 371 | |
| 372 int Command::level = 0; | |
| 373 | |
| 374 extern "C" void blob(CodeBlob* cb) { | |
| 375 Command c("blob"); | |
| 376 cb->print(); | |
| 377 } | |
| 378 | |
| 379 | |
| 380 extern "C" void dump_vtable(address p) { | |
| 381 Command c("dump_vtable"); | |
| 382 klassOop k = (klassOop)p; | |
| 383 instanceKlass::cast(k)->vtable()->print(); | |
| 384 } | |
| 385 | |
| 386 | |
| 387 extern "C" void nm(intptr_t p) { | |
| 388 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) | |
| 389 Command c("nm"); | |
| 390 CodeBlob* cb = CodeCache::find_blob((address)p); | |
| 391 if (cb == NULL) { | |
| 392 tty->print_cr("NULL"); | |
| 393 } else { | |
| 394 cb->print(); | |
| 395 } | |
| 396 } | |
| 397 | |
| 398 | |
| 399 extern "C" void disnm(intptr_t p) { | |
| 400 Command c("disnm"); | |
| 401 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 2008 | 402 nmethod* nm = cb->as_nmethod_or_null(); |
| 403 if (nm) { | |
| 404 nm->print(); | |
| 405 Disassembler::decode(nm); | |
| 406 } else { | |
| 407 cb->print(); | |
| 408 Disassembler::decode(cb); | |
| 409 } | |
| 0 | 410 } |
| 411 | |
| 412 | |
| 413 extern "C" void printnm(intptr_t p) { | |
| 414 char buffer[256]; | |
| 415 sprintf(buffer, "printnm: " INTPTR_FORMAT, p); | |
| 416 Command c(buffer); | |
| 417 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 418 if (cb->is_nmethod()) { | |
| 419 nmethod* nm = (nmethod*)cb; | |
| 420 nm->print_nmethod(true); | |
| 421 } | |
| 422 } | |
| 423 | |
| 424 | |
| 425 extern "C" void universe() { | |
| 426 Command c("universe"); | |
| 427 Universe::print(); | |
| 428 } | |
| 429 | |
| 430 | |
| 431 extern "C" void verify() { | |
| 432 // try to run a verify on the entire system | |
| 433 // note: this may not be safe if we're not at a safepoint; for debugging, | |
| 434 // this manipulates the safepoint settings to avoid assertion failures | |
| 435 Command c("universe verify"); | |
| 436 bool safe = SafepointSynchronize::is_at_safepoint(); | |
| 437 if (!safe) { | |
| 438 tty->print_cr("warning: not at safepoint -- verify may fail"); | |
| 439 SafepointSynchronize::set_is_at_safepoint(); | |
| 440 } | |
| 441 // Ensure Eden top is correct before verification | |
| 442 Universe::heap()->prepare_for_verify(); | |
| 443 Universe::verify(true); | |
| 444 if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); | |
| 445 } | |
| 446 | |
| 447 | |
| 448 extern "C" void pp(void* p) { | |
| 449 Command c("pp"); | |
| 450 FlagSetting fl(PrintVMMessages, true); | |
| 451 if (Universe::heap()->is_in(p)) { | |
| 452 oop obj = oop(p); | |
| 453 obj->print(); | |
| 454 } else { | |
| 455 tty->print("%#p", p); | |
| 456 } | |
| 457 } | |
| 458 | |
| 459 | |
| 460 // pv: print vm-printable object | |
| 461 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } | |
| 462 extern "C" void findpc(intptr_t x); | |
| 463 | |
| 464 extern "C" void ps() { // print stack | |
| 465 Command c("ps"); | |
| 466 | |
| 467 | |
| 468 // Prints the stack of the current Java thread | |
| 469 JavaThread* p = JavaThread::active(); | |
| 470 tty->print(" for thread: "); | |
| 471 p->print(); | |
| 472 tty->cr(); | |
| 473 | |
| 474 if (p->has_last_Java_frame()) { | |
| 475 // If the last_Java_fp is set we are in C land and | |
| 476 // can call the standard stack_trace function. | |
| 477 p->trace_stack(); | |
| 478 } else { | |
| 479 frame f = os::current_frame(); | |
| 480 RegisterMap reg_map(p); | |
| 481 f = f.sender(®_map); | |
| 482 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); | |
| 483 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); | |
| 484 pd_ps(f); | |
| 485 } | |
| 486 | |
| 487 } | |
| 488 | |
| 489 | |
| 490 extern "C" void psf() { // print stack frames | |
| 491 { | |
| 492 Command c("psf"); | |
| 493 JavaThread* p = JavaThread::active(); | |
| 494 tty->print(" for thread: "); | |
| 495 p->print(); | |
| 496 tty->cr(); | |
| 497 if (p->has_last_Java_frame()) { | |
| 498 p->trace_frames(); | |
| 499 } | |
| 500 } | |
| 501 } | |
| 502 | |
| 503 | |
| 504 extern "C" void threads() { | |
| 505 Command c("threads"); | |
| 506 Threads::print(false, true); | |
| 507 } | |
| 508 | |
| 509 | |
| 510 extern "C" void psd() { | |
| 511 Command c("psd"); | |
| 512 SystemDictionary::print(); | |
| 513 } | |
| 514 | |
| 515 | |
| 516 extern "C" void safepoints() { | |
| 517 Command c("safepoints"); | |
| 518 SafepointSynchronize::print_state(); | |
| 519 } | |
| 520 | |
| 521 | |
| 522 extern "C" void pss() { // print all stacks | |
| 523 Command c("pss"); | |
| 524 Threads::print(true, true); | |
| 525 } | |
| 526 | |
| 527 | |
| 528 extern "C" void debug() { // to set things up for compiler debugging | |
| 529 Command c("debug"); | |
| 530 WizardMode = true; | |
| 531 PrintVMMessages = PrintCompilation = true; | |
| 532 PrintInlining = PrintAssembly = true; | |
| 533 tty->flush(); | |
| 534 } | |
| 535 | |
| 536 | |
| 537 extern "C" void ndebug() { // undo debug() | |
| 538 Command c("ndebug"); | |
| 539 PrintCompilation = false; | |
| 540 PrintInlining = PrintAssembly = false; | |
| 541 tty->flush(); | |
| 542 } | |
| 543 | |
| 544 | |
| 545 extern "C" void flush() { | |
| 546 Command c("flush"); | |
| 547 tty->flush(); | |
| 548 } | |
| 549 | |
| 550 | |
| 551 extern "C" void events() { | |
| 552 Command c("events"); | |
| 553 Events::print_last(tty, 50); | |
| 554 } | |
| 555 | |
| 556 | |
| 557 extern "C" void nevents(int n) { | |
| 558 Command c("events"); | |
| 559 Events::print_last(tty, n); | |
| 560 } | |
| 561 | |
| 562 | |
| 563 // Given a heap address that was valid before the most recent GC, if | |
| 564 // the oop that used to contain it is still live, prints the new | |
| 565 // location of the oop and the address. Useful for tracking down | |
| 566 // certain kinds of naked oop and oop map bugs. | |
| 567 extern "C" void pnl(intptr_t old_heap_addr) { | |
| 568 // Print New Location of old heap address | |
| 569 Command c("pnl"); | |
| 570 #ifndef VALIDATE_MARK_SWEEP | |
| 571 tty->print_cr("Requires build with VALIDATE_MARK_SWEEP defined (debug build) and RecordMarkSweepCompaction enabled"); | |
| 572 #else | |
| 573 MarkSweep::print_new_location_of_heap_address((HeapWord*) old_heap_addr); | |
| 574 #endif | |
| 575 } | |
| 576 | |
| 577 | |
| 578 extern "C" methodOop findm(intptr_t pc) { | |
| 579 Command c("findm"); | |
| 580 nmethod* nm = CodeCache::find_nmethod((address)pc); | |
| 581 return (nm == NULL) ? (methodOop)NULL : nm->method(); | |
| 582 } | |
| 583 | |
| 584 | |
| 585 extern "C" nmethod* findnm(intptr_t addr) { | |
| 586 Command c("findnm"); | |
| 587 return CodeCache::find_nmethod((address)addr); | |
| 588 } | |
| 589 | |
| 590 static address same_page(address x, address y) { | |
| 591 intptr_t page_bits = -os::vm_page_size(); | |
| 592 if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) { | |
| 593 return x; | |
| 594 } else if (x > y) { | |
| 595 return (address)(intptr_t(y) | ~page_bits) + 1; | |
| 596 } else { | |
| 597 return (address)(intptr_t(y) & page_bits); | |
| 598 } | |
| 599 } | |
| 600 | |
| 601 class LookForRefInGenClosure : public OopsInGenClosure { | |
| 602 public: | |
| 603 oop target; | |
| 604 void do_oop(oop* o) { | |
| 605 if (o != NULL && *o == target) { | |
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606 tty->print_cr(INTPTR_FORMAT, o); |
| 0 | 607 } |
| 608 } | |
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609 void do_oop(narrowOop* o) { ShouldNotReachHere(); } |
| 0 | 610 }; |
| 611 | |
| 612 | |
| 613 class LookForRefInObjectClosure : public ObjectClosure { | |
| 614 private: | |
| 615 LookForRefInGenClosure look_in_object; | |
| 616 public: | |
| 617 LookForRefInObjectClosure(oop target) { look_in_object.target = target; } | |
| 618 void do_object(oop obj) { | |
| 619 obj->oop_iterate(&look_in_object); | |
| 620 } | |
| 621 }; | |
| 622 | |
| 623 | |
| 624 static void findref(intptr_t x) { | |
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625 CollectedHeap *ch = Universe::heap(); |
| 0 | 626 LookForRefInGenClosure lookFor; |
| 627 lookFor.target = (oop) x; | |
| 628 LookForRefInObjectClosure look_in_object((oop) x); | |
| 629 | |
| 630 tty->print_cr("Searching heap:"); | |
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631 ch->object_iterate(&look_in_object); |
| 0 | 632 |
| 633 tty->print_cr("Searching strong roots:"); | |
| 634 Universe::oops_do(&lookFor, false); | |
| 635 JNIHandles::oops_do(&lookFor); // Global (strong) JNI handles | |
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636 Threads::oops_do(&lookFor, NULL); |
| 0 | 637 ObjectSynchronizer::oops_do(&lookFor); |
| 638 //FlatProfiler::oops_do(&lookFor); | |
| 639 SystemDictionary::oops_do(&lookFor); | |
| 640 | |
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641 tty->print_cr("Searching code cache:"); |
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642 CodeCache::oops_do(&lookFor); |
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643 |
| 0 | 644 tty->print_cr("Done."); |
| 645 } | |
| 646 | |
| 647 class FindClassObjectClosure: public ObjectClosure { | |
| 648 private: | |
| 649 const char* _target; | |
| 650 public: | |
| 651 FindClassObjectClosure(const char name[]) { _target = name; } | |
| 652 | |
| 653 virtual void do_object(oop obj) { | |
| 654 if (obj->is_klass()) { | |
| 655 Klass* k = klassOop(obj)->klass_part(); | |
| 656 if (k->name() != NULL) { | |
| 657 ResourceMark rm; | |
| 658 const char* ext = k->external_name(); | |
| 659 if ( strcmp(_target, ext) == 0 ) { | |
| 660 tty->print_cr("Found " INTPTR_FORMAT, obj); | |
| 661 obj->print(); | |
| 662 } | |
| 663 } | |
| 664 } | |
| 665 } | |
| 666 }; | |
| 667 | |
| 668 // | |
| 669 extern "C" void findclass(const char name[]) { | |
| 670 Command c("findclass"); | |
| 671 if (name != NULL) { | |
| 672 tty->print_cr("Finding class %s -> ", name); | |
| 673 FindClassObjectClosure srch(name); | |
| 674 Universe::heap()->permanent_object_iterate(&srch); | |
| 675 } | |
| 676 } | |
| 677 | |
| 678 // Another interface that isn't ambiguous in dbx. | |
| 679 // Can we someday rename the other find to hsfind? | |
| 680 extern "C" void hsfind(intptr_t x) { | |
| 681 Command c("hsfind"); | |
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682 os::print_location(tty, x, false); |
| 0 | 683 } |
| 684 | |
| 685 | |
| 686 extern "C" void hsfindref(intptr_t x) { | |
| 687 Command c("hsfindref"); | |
| 688 findref(x); | |
| 689 } | |
| 690 | |
| 691 extern "C" void find(intptr_t x) { | |
| 692 Command c("find"); | |
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693 os::print_location(tty, x, false); |
| 0 | 694 } |
| 695 | |
| 696 | |
| 697 extern "C" void findpc(intptr_t x) { | |
| 698 Command c("findpc"); | |
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699 os::print_location(tty, x, true); |
| 0 | 700 } |
| 701 | |
| 702 | |
| 703 // int versions of all methods to avoid having to type type casts in the debugger | |
| 704 | |
| 705 void pp(intptr_t p) { pp((void*)p); } | |
| 706 void pp(oop p) { pp((void*)p); } | |
| 707 | |
| 708 void help() { | |
| 709 Command c("help"); | |
| 710 tty->print_cr("basic"); | |
| 711 tty->print_cr(" pp(void* p) - try to make sense of p"); | |
| 712 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); | |
| 713 tty->print_cr(" ps() - print current thread stack"); | |
| 714 tty->print_cr(" pss() - print all thread stacks"); | |
| 715 tty->print_cr(" pm(int pc) - print methodOop given compiled PC"); | |
| 716 tty->print_cr(" findm(intptr_t pc) - finds methodOop"); | |
| 717 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); | |
| 718 | |
| 719 tty->print_cr("misc."); | |
| 720 tty->print_cr(" flush() - flushes the log file"); | |
| 721 tty->print_cr(" events() - dump last 50 events"); | |
| 722 | |
| 723 | |
| 724 tty->print_cr("compiler debugging"); | |
| 725 tty->print_cr(" debug() - to set things up for compiler debugging"); | |
| 726 tty->print_cr(" ndebug() - undo debug"); | |
| 727 } | |
| 728 | |
| 729 #if 0 | |
| 730 | |
| 731 // BobV's command parser for debugging on windows when nothing else works. | |
| 732 | |
| 733 enum CommandID { | |
| 734 CMDID_HELP, | |
| 735 CMDID_QUIT, | |
| 736 CMDID_HSFIND, | |
| 737 CMDID_PSS, | |
| 738 CMDID_PS, | |
| 739 CMDID_PSF, | |
| 740 CMDID_FINDM, | |
| 741 CMDID_FINDNM, | |
| 742 CMDID_PP, | |
| 743 CMDID_BPT, | |
| 744 CMDID_EXIT, | |
| 745 CMDID_VERIFY, | |
| 746 CMDID_THREADS, | |
| 747 CMDID_ILLEGAL = 99 | |
| 748 }; | |
| 749 | |
| 750 struct CommandParser { | |
| 751 char *name; | |
| 752 CommandID code; | |
| 753 char *description; | |
| 754 }; | |
| 755 | |
| 756 struct CommandParser CommandList[] = { | |
| 757 (char *)"help", CMDID_HELP, " Dump this list", | |
| 758 (char *)"quit", CMDID_QUIT, " Return from this routine", | |
| 759 (char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address", | |
| 760 (char *)"ps", CMDID_PS, " Print Current Thread Stack Trace", | |
| 761 (char *)"pss", CMDID_PSS, " Print All Thread Stack Trace", | |
| 762 (char *)"psf", CMDID_PSF, " Print All Stack Frames", | |
| 763 (char *)"findm", CMDID_FINDM, " Find a methodOop from a PC", | |
| 764 (char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC", | |
| 765 (char *)"pp", CMDID_PP, " Find out something about a pointer", | |
| 766 (char *)"break", CMDID_BPT, " Execute a breakpoint", | |
| 767 (char *)"exitvm", CMDID_EXIT, "Exit the VM", | |
| 768 (char *)"verify", CMDID_VERIFY, "Perform a Heap Verify", | |
| 769 (char *)"thread", CMDID_THREADS, "Dump Info on all Threads", | |
| 770 (char *)0, CMDID_ILLEGAL | |
| 771 }; | |
| 772 | |
| 773 | |
| 774 // get_debug_command() | |
| 775 // | |
| 776 // Read a command from standard input. | |
| 777 // This is useful when you have a debugger | |
| 778 // which doesn't support calling into functions. | |
| 779 // | |
| 780 void get_debug_command() | |
| 781 { | |
| 782 ssize_t count; | |
| 783 int i,j; | |
| 784 bool gotcommand; | |
| 785 intptr_t addr; | |
| 786 char buffer[256]; | |
| 787 nmethod *nm; | |
| 788 methodOop m; | |
| 789 | |
| 790 tty->print_cr("You have entered the diagnostic command interpreter"); | |
| 791 tty->print("The supported commands are:\n"); | |
| 792 for ( i=0; ; i++ ) { | |
| 793 if ( CommandList[i].code == CMDID_ILLEGAL ) | |
| 794 break; | |
| 795 tty->print_cr(" %s \n", CommandList[i].name ); | |
| 796 } | |
| 797 | |
| 798 while ( 1 ) { | |
| 799 gotcommand = false; | |
| 800 tty->print("Please enter a command: "); | |
| 801 count = scanf("%s", buffer) ; | |
| 802 if ( count >=0 ) { | |
| 803 for ( i=0; ; i++ ) { | |
| 804 if ( CommandList[i].code == CMDID_ILLEGAL ) { | |
| 805 if (!gotcommand) tty->print("Invalid command, please try again\n"); | |
| 806 break; | |
| 807 } | |
| 808 if ( strcmp(buffer, CommandList[i].name) == 0 ) { | |
| 809 gotcommand = true; | |
| 810 switch ( CommandList[i].code ) { | |
| 811 case CMDID_PS: | |
| 812 ps(); | |
| 813 break; | |
| 814 case CMDID_PSS: | |
| 815 pss(); | |
| 816 break; | |
| 817 case CMDID_PSF: | |
| 818 psf(); | |
| 819 break; | |
| 820 case CMDID_FINDM: | |
| 821 tty->print("Please enter the hex addr to pass to findm: "); | |
| 822 scanf("%I64X", &addr); | |
| 823 m = (methodOop)findm(addr); | |
| 824 tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m); | |
| 825 break; | |
| 826 case CMDID_FINDNM: | |
| 827 tty->print("Please enter the hex addr to pass to findnm: "); | |
| 828 scanf("%I64X", &addr); | |
| 829 nm = (nmethod*)findnm(addr); | |
| 830 tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm); | |
| 831 break; | |
| 832 case CMDID_PP: | |
| 833 tty->print("Please enter the hex addr to pass to pp: "); | |
| 834 scanf("%I64X", &addr); | |
| 835 pp((void*)addr); | |
| 836 break; | |
| 837 case CMDID_EXIT: | |
| 838 exit(0); | |
| 839 case CMDID_HELP: | |
| 840 tty->print("Here are the supported commands: "); | |
| 841 for ( j=0; ; j++ ) { | |
| 842 if ( CommandList[j].code == CMDID_ILLEGAL ) | |
| 843 break; | |
| 844 tty->print_cr(" %s -- %s\n", CommandList[j].name, | |
| 845 CommandList[j].description ); | |
| 846 } | |
| 847 break; | |
| 848 case CMDID_QUIT: | |
| 849 return; | |
| 850 break; | |
| 851 case CMDID_BPT: | |
| 852 BREAKPOINT; | |
| 853 break; | |
| 854 case CMDID_VERIFY: | |
| 855 verify();; | |
| 856 break; | |
| 857 case CMDID_THREADS: | |
| 858 threads();; | |
| 859 break; | |
| 860 case CMDID_HSFIND: | |
| 861 tty->print("Please enter the hex addr to pass to hsfind: "); | |
| 862 scanf("%I64X", &addr); | |
| 863 tty->print("Calling hsfind(0x%I64X)\n", addr); | |
| 864 hsfind(addr); | |
| 865 break; | |
| 866 default: | |
| 867 case CMDID_ILLEGAL: | |
| 868 break; | |
| 869 } | |
| 870 } | |
| 871 } | |
| 872 } | |
| 873 } | |
| 874 } | |
| 875 #endif | |
| 876 | |
| 877 #endif // PRODUCT |