Mercurial > hg > graal-jvmci-8
annotate src/share/vm/utilities/debug.cpp @ 24234:ea6f94ab283b default tip
Added tag jvmci-0.36 for changeset 8128b98d4736
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Mon, 18 Sep 2017 18:49:45 +0200 |
| parents | b5f3a471e646 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2016, 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" | |
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47 #include "runtime/thread.inline.hpp" |
| 1972 | 48 #include "runtime/vframe.hpp" |
| 49 #include "services/heapDumper.hpp" | |
| 50 #include "utilities/defaultStream.hpp" | |
| 51 #include "utilities/events.hpp" | |
| 52 #include "utilities/top.hpp" | |
| 53 #include "utilities/vmError.hpp" | |
| 54 #ifdef TARGET_OS_FAMILY_linux | |
| 55 # include "os_linux.inline.hpp" | |
| 56 #endif | |
| 57 #ifdef TARGET_OS_FAMILY_solaris | |
| 58 # include "os_solaris.inline.hpp" | |
| 59 #endif | |
| 60 #ifdef TARGET_OS_FAMILY_windows | |
| 61 # include "os_windows.inline.hpp" | |
| 62 #endif | |
| 3960 | 63 #ifdef TARGET_OS_FAMILY_bsd |
| 64 # include "os_bsd.inline.hpp" | |
| 65 #endif | |
| 0 | 66 |
| 67 #ifndef ASSERT | |
| 68 # ifdef _DEBUG | |
| 69 // NOTE: don't turn the lines below into a comment -- if you're getting | |
| 70 // a compile error here, change the settings to define ASSERT | |
| 71 ASSERT should be defined when _DEBUG is defined. It is not intended to be used for debugging | |
| 72 functions that do not slow down the system too much and thus can be left in optimized code. | |
| 73 On the other hand, the code should not be included in a production version. | |
| 74 # endif // _DEBUG | |
| 75 #endif // ASSERT | |
| 76 | |
| 77 | |
| 78 #ifdef _DEBUG | |
| 79 # ifndef ASSERT | |
| 80 configuration error: ASSERT must be defined in debug version | |
| 81 # endif // ASSERT | |
| 82 #endif // _DEBUG | |
| 83 | |
| 84 | |
| 85 #ifdef PRODUCT | |
| 86 # if -defined _DEBUG || -defined ASSERT | |
| 87 configuration error: ASSERT et al. must not be defined in PRODUCT version | |
| 88 # endif | |
| 89 #endif // PRODUCT | |
| 90 | |
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91 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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92 |
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93 FormatBufferResource::FormatBufferResource(const char * format, ...) |
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94 : FormatBufferBase((char*)resource_allocate_bytes(RES_BUFSZ)) { |
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95 va_list argp; |
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96 va_start(argp, format); |
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97 jio_vsnprintf(_buf, RES_BUFSZ, format, argp); |
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98 va_end(argp); |
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99 } |
| 0 | 100 |
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101 ATTRIBUTE_PRINTF(1, 2) |
| 0 | 102 void warning(const char* format, ...) { |
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103 if (PrintWarnings) { |
| 6759 | 104 FILE* const err = defaultStream::error_stream(); |
| 105 jio_fprintf(err, "%s warning: ", VM_Version::vm_name()); | |
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106 va_list ap; |
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107 va_start(ap, format); |
| 6759 | 108 vfprintf(err, format, ap); |
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109 va_end(ap); |
| 6759 | 110 fputc('\n', err); |
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111 } |
| 0 | 112 if (BreakAtWarning) BREAKPOINT; |
| 113 } | |
| 114 | |
| 115 #ifndef PRODUCT | |
| 116 | |
| 117 #define is_token_break(ch) (isspace(ch) || (ch) == ',') | |
| 118 | |
| 119 static const char* last_file_name = NULL; | |
| 120 static int last_line_no = -1; | |
| 121 | |
| 122 // assert/guarantee/... may happen very early during VM initialization. | |
| 123 // Don't rely on anything that is initialized by Threads::create_vm(). For | |
| 124 // example, don't use tty. | |
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125 bool error_is_suppressed(const char* file_name, int line_no) { |
| 0 | 126 // The following 1-element cache requires that passed-in |
| 127 // file names are always only constant literals. | |
| 128 if (file_name == last_file_name && line_no == last_line_no) return true; | |
| 129 | |
| 130 int file_name_len = (int)strlen(file_name); | |
| 131 char separator = os::file_separator()[0]; | |
| 132 const char* base_name = strrchr(file_name, separator); | |
| 133 if (base_name == NULL) | |
| 134 base_name = file_name; | |
| 135 | |
| 136 // scan the SuppressErrorAt option | |
| 137 const char* cp = SuppressErrorAt; | |
| 138 for (;;) { | |
| 139 const char* sfile; | |
| 140 int sfile_len; | |
| 141 int sline; | |
| 142 bool noisy; | |
| 143 while ((*cp) != '\0' && is_token_break(*cp)) cp++; | |
| 144 if ((*cp) == '\0') break; | |
| 145 sfile = cp; | |
| 146 while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++; | |
| 147 sfile_len = cp - sfile; | |
| 148 if ((*cp) == ':') cp++; | |
| 149 sline = 0; | |
| 150 while ((*cp) != '\0' && isdigit(*cp)) { | |
| 151 sline *= 10; | |
| 152 sline += (*cp) - '0'; | |
| 153 cp++; | |
| 154 } | |
| 155 // "file:line!" means the assert suppression is not silent | |
| 156 noisy = ((*cp) == '!'); | |
| 157 while ((*cp) != '\0' && !is_token_break(*cp)) cp++; | |
| 158 // match the line | |
| 159 if (sline != 0) { | |
| 160 if (sline != line_no) continue; | |
| 161 } | |
| 162 // match the file | |
| 163 if (sfile_len > 0) { | |
| 164 const char* look = file_name; | |
| 165 const char* look_max = file_name + file_name_len - sfile_len; | |
| 166 const char* foundp; | |
| 167 bool match = false; | |
| 168 while (!match | |
| 169 && (foundp = strchr(look, sfile[0])) != NULL | |
| 170 && foundp <= look_max) { | |
| 171 match = true; | |
| 172 for (int i = 1; i < sfile_len; i++) { | |
| 173 if (sfile[i] != foundp[i]) { | |
| 174 match = false; | |
| 175 break; | |
| 176 } | |
| 177 } | |
| 178 look = foundp + 1; | |
| 179 } | |
| 180 if (!match) continue; | |
| 181 } | |
| 182 // got a match! | |
| 183 if (noisy) { | |
| 184 fdStream out(defaultStream::output_fd()); | |
| 185 out.print_raw("[error suppressed at "); | |
| 186 out.print_raw(base_name); | |
| 187 char buf[16]; | |
| 188 jio_snprintf(buf, sizeof(buf), ":%d]", line_no); | |
| 189 out.print_raw_cr(buf); | |
| 190 } else { | |
| 191 // update 1-element cache for fast silent matches | |
| 192 last_file_name = file_name; | |
| 193 last_line_no = line_no; | |
| 194 } | |
| 195 return true; | |
| 196 } | |
| 197 | |
| 198 if (!is_error_reported()) { | |
| 199 // print a friendly hint: | |
| 200 fdStream out(defaultStream::output_fd()); | |
| 201 out.print_raw_cr("# To suppress the following error report, specify this argument"); | |
| 202 out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt="); | |
| 203 out.print_raw (base_name); | |
| 204 char buf[16]; | |
| 205 jio_snprintf(buf, sizeof(buf), ":%d", line_no); | |
| 206 out.print_raw_cr(buf); | |
| 207 } | |
| 208 return false; | |
| 209 } | |
| 210 | |
| 211 #undef is_token_break | |
| 212 | |
| 213 #else | |
| 214 | |
| 215 // Place-holder for non-existent suppression check: | |
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216 #define error_is_suppressed(file_name, line_no) (false) |
| 0 | 217 |
| 4006 | 218 #endif // !PRODUCT |
| 0 | 219 |
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220 void report_vm_error(const char* file, int line, const char* error_msg, |
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221 const char* detail_msg) |
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222 { |
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223 if (Debugging || error_is_suppressed(file, line)) return; |
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224 Thread* const thread = ThreadLocalStorage::get_thread_slow(); |
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225 VMError err(thread, file, line, error_msg, detail_msg); |
| 0 | 226 err.report_and_die(); |
| 227 } | |
| 228 | |
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229 void report_fatal(const char* file, int line, const char* message) |
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230 { |
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231 report_vm_error(file, line, "fatal error", message); |
| 0 | 232 } |
| 233 | |
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234 void report_vm_out_of_memory(const char* file, int line, size_t size, |
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235 VMErrorType vm_err_type, const char* message) { |
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236 if (Debugging) return; |
| 0 | 237 |
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238 Thread* thread = ThreadLocalStorage::get_thread_slow(); |
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239 VMError(thread, file, line, size, vm_err_type, message).report_and_die(); |
| 0 | 240 |
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241 // The UseOSErrorReporting option in report_and_die() may allow a return |
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242 // to here. If so then we'll have to figure out how to handle it. |
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243 guarantee(false, "report_and_die() should not return here"); |
| 0 | 244 } |
| 245 | |
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246 void report_should_not_call(const char* file, int line) { |
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247 report_vm_error(file, line, "ShouldNotCall()"); |
| 0 | 248 } |
| 249 | |
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250 void report_should_not_reach_here(const char* file, int line) { |
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251 report_vm_error(file, line, "ShouldNotReachHere()"); |
| 0 | 252 } |
| 253 | |
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254 void report_unimplemented(const char* file, int line) { |
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255 report_vm_error(file, line, "Unimplemented()"); |
| 0 | 256 } |
| 257 | |
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258 void report_untested(const char* file, int line, const char* message) { |
| 0 | 259 #ifndef PRODUCT |
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260 warning("Untested: %s in %s: %d\n", message, file, line); |
| 4006 | 261 #endif // !PRODUCT |
| 0 | 262 } |
| 263 | |
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264 void report_out_of_shared_space(SharedSpaceType shared_space) { |
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265 static const char* name[] = { |
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266 "native memory for metadata", |
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267 "shared read only space", |
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268 "shared read write space", |
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269 "shared miscellaneous data space", |
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270 "shared miscellaneous code space" |
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271 }; |
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272 static const char* flag[] = { |
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273 "Metaspace", |
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274 "SharedReadOnlySize", |
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275 "SharedReadWriteSize", |
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276 "SharedMiscDataSize", |
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277 "SharedMiscCodeSize" |
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278 }; |
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279 |
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280 warning("\nThe %s is not large enough\n" |
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281 "to preload requested classes. Use -XX:%s=<size>\n" |
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282 "to increase the initial size of %s.\n", |
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283 name[shared_space], flag[shared_space], name[shared_space]); |
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284 exit(2); |
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285 } |
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286 |
| 0 | 287 void report_java_out_of_memory(const char* message) { |
| 288 static jint out_of_memory_reported = 0; | |
| 289 | |
| 290 // A number of threads may attempt to report OutOfMemoryError at around the | |
| 291 // same time. To avoid dumping the heap or executing the data collection | |
| 292 // commands multiple times we just do it once when the first threads reports | |
| 293 // the error. | |
| 294 if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) { | |
| 295 // create heap dump before OnOutOfMemoryError commands are executed | |
| 296 if (HeapDumpOnOutOfMemoryError) { | |
| 297 tty->print_cr("java.lang.OutOfMemoryError: %s", message); | |
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298 HeapDumper::dump_heap_from_oome(); |
| 0 | 299 } |
| 300 | |
| 301 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { | |
| 302 VMError err(message); | |
| 303 err.report_java_out_of_memory(); | |
| 304 } | |
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305 |
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306 if (CrashOnOutOfMemoryError) { |
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307 tty->print_cr("Aborting due to java.lang.OutOfMemoryError: %s", message); |
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308 fatal(err_msg("OutOfMemory encountered: %s", message)); |
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309 } |
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310 |
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311 if (ExitOnOutOfMemoryError) { |
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312 tty->print_cr("Terminating due to java.lang.OutOfMemoryError: %s", message); |
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313 exit(3); |
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314 } |
| 0 | 315 } |
| 316 } | |
| 317 | |
| 318 static bool error_reported = false; | |
| 319 | |
| 320 // call this when the VM is dying--it might loosen some asserts | |
| 321 void set_error_reported() { | |
| 322 error_reported = true; | |
| 323 } | |
| 324 | |
| 325 bool is_error_reported() { | |
| 326 return error_reported; | |
| 327 } | |
| 328 | |
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329 #ifndef PRODUCT |
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330 #include <signal.h> |
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331 |
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332 void test_error_handler() { |
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333 uintx test_num = ErrorHandlerTest; |
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334 if (test_num == 0) return; |
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335 |
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336 // If asserts are disabled, use the corresponding guarantee instead. |
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337 size_t n = test_num; |
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338 NOT_DEBUG(if (n <= 2) n += 2); |
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339 |
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340 const char* const str = "hello"; |
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341 const size_t num = (size_t)os::vm_page_size(); |
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342 |
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343 const char* const eol = os::line_separator(); |
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344 const char* const msg = "this message should be truncated during formatting"; |
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345 char * const dataPtr = NULL; // bad data pointer |
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346 const void (*funcPtr)(void) = (const void(*)()) 0xF; // bad function pointer |
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347 |
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348 // Keep this in sync with test/runtime/6888954/vmerrors.sh. |
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349 switch (n) { |
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350 case 1: assert(str == NULL, "expected null"); |
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351 case 2: assert(num == 1023 && *str == 'X', |
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352 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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353 case 3: guarantee(str == NULL, "expected null"); |
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354 case 4: guarantee(num == 1023 && *str == 'X', |
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355 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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356 case 5: fatal("expected null"); |
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357 case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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358 case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# " |
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359 "%s%s# %s%s# %s%s# %s%s# %s%s# " |
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360 "%s%s# %s%s# %s%s# %s%s# %s", |
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361 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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362 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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363 msg, eol, msg, eol, msg, eol, msg, eol, msg)); |
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364 case 8: vm_exit_out_of_memory(num, OOM_MALLOC_ERROR, "ChunkPool::allocate"); |
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365 case 9: ShouldNotCallThis(); |
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366 case 10: ShouldNotReachHere(); |
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367 case 11: Unimplemented(); |
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368 // There's no guarantee the bad data pointer will crash us |
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369 // so "break" out to the ShouldNotReachHere(). |
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370 case 12: *dataPtr = '\0'; break; |
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371 // There's no guarantee the bad function pointer will crash us |
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372 // so "break" out to the ShouldNotReachHere(). |
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373 case 13: (*funcPtr)(); break; |
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374 |
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375 default: tty->print_cr("ERROR: %d: unexpected test_num value.", n); |
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376 } |
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377 ShouldNotReachHere(); |
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378 } |
| 4006 | 379 #endif // !PRODUCT |
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380 |
| 0 | 381 // ------ helper functions for debugging go here ------------ |
| 382 | |
| 383 // All debug entries should be wrapped with a stack allocated | |
| 384 // Command object. It makes sure a resource mark is set and | |
| 385 // flushes the logfile to prevent file sharing problems. | |
| 386 | |
| 387 class Command : public StackObj { | |
| 388 private: | |
| 389 ResourceMark rm; | |
| 390 ResetNoHandleMark rnhm; | |
| 391 HandleMark hm; | |
| 392 bool debug_save; | |
| 393 public: | |
| 394 static int level; | |
| 395 Command(const char* str) { | |
| 396 debug_save = Debugging; | |
| 397 Debugging = true; | |
| 398 if (level++ > 0) return; | |
| 399 tty->cr(); | |
| 400 tty->print_cr("\"Executing %s\"", str); | |
| 401 } | |
| 402 | |
| 4006 | 403 ~Command() { |
| 404 tty->flush(); | |
| 405 Debugging = debug_save; | |
| 406 level--; | |
| 407 } | |
| 0 | 408 }; |
| 409 | |
| 410 int Command::level = 0; | |
| 411 | |
| 4006 | 412 #ifndef PRODUCT |
| 413 | |
| 0 | 414 extern "C" void blob(CodeBlob* cb) { |
| 415 Command c("blob"); | |
| 416 cb->print(); | |
| 417 } | |
| 418 | |
| 419 | |
| 420 extern "C" void dump_vtable(address p) { | |
| 421 Command c("dump_vtable"); | |
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422 Klass* k = (Klass*)p; |
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423 InstanceKlass::cast(k)->vtable()->print(); |
| 0 | 424 } |
| 425 | |
| 426 | |
| 427 extern "C" void nm(intptr_t p) { | |
| 428 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) | |
| 429 Command c("nm"); | |
| 430 CodeBlob* cb = CodeCache::find_blob((address)p); | |
| 431 if (cb == NULL) { | |
| 432 tty->print_cr("NULL"); | |
| 433 } else { | |
| 434 cb->print(); | |
| 435 } | |
| 436 } | |
| 437 | |
| 438 | |
| 439 extern "C" void disnm(intptr_t p) { | |
| 440 Command c("disnm"); | |
| 441 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 2008 | 442 nmethod* nm = cb->as_nmethod_or_null(); |
| 443 if (nm) { | |
| 444 nm->print(); | |
| 445 Disassembler::decode(nm); | |
| 446 } else { | |
| 447 cb->print(); | |
| 448 Disassembler::decode(cb); | |
| 449 } | |
| 0 | 450 } |
| 451 | |
| 452 | |
| 453 extern "C" void printnm(intptr_t p) { | |
| 454 char buffer[256]; | |
| 455 sprintf(buffer, "printnm: " INTPTR_FORMAT, p); | |
| 456 Command c(buffer); | |
| 457 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 458 if (cb->is_nmethod()) { | |
| 459 nmethod* nm = (nmethod*)cb; | |
| 460 nm->print_nmethod(true); | |
| 461 } | |
| 462 } | |
| 463 | |
| 464 | |
| 465 extern "C" void universe() { | |
| 466 Command c("universe"); | |
| 467 Universe::print(); | |
| 468 } | |
| 469 | |
| 470 | |
| 471 extern "C" void verify() { | |
| 472 // try to run a verify on the entire system | |
| 473 // note: this may not be safe if we're not at a safepoint; for debugging, | |
| 474 // this manipulates the safepoint settings to avoid assertion failures | |
| 475 Command c("universe verify"); | |
| 476 bool safe = SafepointSynchronize::is_at_safepoint(); | |
| 477 if (!safe) { | |
| 478 tty->print_cr("warning: not at safepoint -- verify may fail"); | |
| 479 SafepointSynchronize::set_is_at_safepoint(); | |
| 480 } | |
| 481 // Ensure Eden top is correct before verification | |
| 482 Universe::heap()->prepare_for_verify(); | |
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483 Universe::verify(); |
| 0 | 484 if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); |
| 485 } | |
| 486 | |
| 487 | |
| 488 extern "C" void pp(void* p) { | |
| 489 Command c("pp"); | |
| 490 FlagSetting fl(PrintVMMessages, true); | |
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491 FlagSetting f2(DisplayVMOutput, true); |
| 0 | 492 if (Universe::heap()->is_in(p)) { |
| 493 oop obj = oop(p); | |
| 494 obj->print(); | |
| 495 } else { | |
| 4006 | 496 tty->print(PTR_FORMAT, p); |
| 0 | 497 } |
| 498 } | |
| 499 | |
| 500 | |
| 501 // pv: print vm-printable object | |
| 502 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } | |
| 503 extern "C" void findpc(intptr_t x); | |
| 504 | |
| 4006 | 505 #endif // !PRODUCT |
| 506 | |
| 0 | 507 extern "C" void ps() { // print stack |
| 4006 | 508 if (Thread::current() == NULL) return; |
| 0 | 509 Command c("ps"); |
| 510 | |
| 511 | |
| 512 // Prints the stack of the current Java thread | |
| 513 JavaThread* p = JavaThread::active(); | |
| 514 tty->print(" for thread: "); | |
| 515 p->print(); | |
| 516 tty->cr(); | |
| 517 | |
| 518 if (p->has_last_Java_frame()) { | |
| 519 // If the last_Java_fp is set we are in C land and | |
| 520 // can call the standard stack_trace function. | |
| 4006 | 521 #ifdef PRODUCT |
| 522 p->print_stack(); | |
| 523 } else { | |
| 524 tty->print_cr("Cannot find the last Java frame, printing stack disabled."); | |
| 525 #else // !PRODUCT | |
| 0 | 526 p->trace_stack(); |
| 527 } else { | |
| 528 frame f = os::current_frame(); | |
| 529 RegisterMap reg_map(p); | |
| 530 f = f.sender(®_map); | |
| 531 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); | |
| 532 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); | |
| 533 pd_ps(f); | |
| 4006 | 534 #endif // PRODUCT |
| 0 | 535 } |
| 536 | |
| 537 } | |
| 538 | |
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539 extern "C" void pfl() { |
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540 // print frame layout |
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541 Command c("pfl"); |
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542 JavaThread* p = JavaThread::active(); |
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543 tty->print(" for thread: "); |
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544 p->print(); |
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545 tty->cr(); |
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546 if (p->has_last_Java_frame()) { |
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547 p->print_frame_layout(); |
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548 } |
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549 } |
| 0 | 550 |
| 4006 | 551 #ifndef PRODUCT |
| 552 | |
| 0 | 553 extern "C" void psf() { // print stack frames |
| 554 { | |
| 555 Command c("psf"); | |
| 556 JavaThread* p = JavaThread::active(); | |
| 557 tty->print(" for thread: "); | |
| 558 p->print(); | |
| 559 tty->cr(); | |
| 560 if (p->has_last_Java_frame()) { | |
| 561 p->trace_frames(); | |
| 562 } | |
| 563 } | |
| 564 } | |
| 565 | |
| 566 | |
| 567 extern "C" void threads() { | |
| 568 Command c("threads"); | |
| 569 Threads::print(false, true); | |
| 570 } | |
| 571 | |
| 572 | |
| 573 extern "C" void psd() { | |
| 574 Command c("psd"); | |
| 575 SystemDictionary::print(); | |
| 576 } | |
| 577 | |
| 578 | |
| 579 extern "C" void safepoints() { | |
| 580 Command c("safepoints"); | |
| 581 SafepointSynchronize::print_state(); | |
| 582 } | |
| 583 | |
| 4006 | 584 #endif // !PRODUCT |
| 0 | 585 |
| 586 extern "C" void pss() { // print all stacks | |
| 4006 | 587 if (Thread::current() == NULL) return; |
| 0 | 588 Command c("pss"); |
| 4006 | 589 Threads::print(true, PRODUCT_ONLY(false) NOT_PRODUCT(true)); |
| 0 | 590 } |
| 591 | |
| 4006 | 592 #ifndef PRODUCT |
| 0 | 593 |
| 594 extern "C" void debug() { // to set things up for compiler debugging | |
| 595 Command c("debug"); | |
| 596 WizardMode = true; | |
| 597 PrintVMMessages = PrintCompilation = true; | |
| 598 PrintInlining = PrintAssembly = true; | |
| 599 tty->flush(); | |
| 600 } | |
| 601 | |
| 602 | |
| 603 extern "C" void ndebug() { // undo debug() | |
| 604 Command c("ndebug"); | |
| 605 PrintCompilation = false; | |
| 606 PrintInlining = PrintAssembly = false; | |
| 607 tty->flush(); | |
| 608 } | |
| 609 | |
| 610 | |
| 611 extern "C" void flush() { | |
| 612 Command c("flush"); | |
| 613 tty->flush(); | |
| 614 } | |
| 615 | |
| 4944 | 616 extern "C" void events() { |
| 617 Command c("events"); | |
| 618 Events::print(); | |
| 619 } | |
| 0 | 620 |
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621 extern "C" Method* findm(intptr_t pc) { |
| 0 | 622 Command c("findm"); |
| 623 nmethod* nm = CodeCache::find_nmethod((address)pc); | |
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624 return (nm == NULL) ? (Method*)NULL : nm->method(); |
| 0 | 625 } |
| 626 | |
| 627 | |
| 628 extern "C" nmethod* findnm(intptr_t addr) { | |
| 629 Command c("findnm"); | |
| 630 return CodeCache::find_nmethod((address)addr); | |
| 631 } | |
| 632 | |
| 633 // Another interface that isn't ambiguous in dbx. | |
| 634 // Can we someday rename the other find to hsfind? | |
| 635 extern "C" void hsfind(intptr_t x) { | |
| 636 Command c("hsfind"); | |
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637 os::print_location(tty, x, false); |
| 0 | 638 } |
| 639 | |
| 640 | |
| 641 extern "C" void find(intptr_t x) { | |
| 642 Command c("find"); | |
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643 os::print_location(tty, x, false); |
| 0 | 644 } |
| 645 | |
| 646 | |
| 647 extern "C" void findpc(intptr_t x) { | |
| 648 Command c("findpc"); | |
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649 os::print_location(tty, x, true); |
| 0 | 650 } |
| 651 | |
| 652 | |
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653 // Need method pointer to find bcp, when not in permgen. |
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654 extern "C" void findbcp(intptr_t method, intptr_t bcp) { |
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655 Command c("findbcp"); |
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656 Method* mh = (Method*)method; |
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657 if (!mh->is_native()) { |
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658 tty->print_cr("bci_from(%p) = %d; print_codes():", |
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659 mh, mh->bci_from(address(bcp))); |
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660 mh->print_codes_on(tty); |
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661 } |
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662 } |
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663 |
| 0 | 664 // int versions of all methods to avoid having to type type casts in the debugger |
| 665 | |
| 666 void pp(intptr_t p) { pp((void*)p); } | |
| 667 void pp(oop p) { pp((void*)p); } | |
| 668 | |
| 669 void help() { | |
| 670 Command c("help"); | |
| 671 tty->print_cr("basic"); | |
| 672 tty->print_cr(" pp(void* p) - try to make sense of p"); | |
| 673 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); | |
| 674 tty->print_cr(" ps() - print current thread stack"); | |
| 675 tty->print_cr(" pss() - print all thread stacks"); | |
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676 tty->print_cr(" pm(int pc) - print Method* given compiled PC"); |
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677 tty->print_cr(" findm(intptr_t pc) - finds Method*"); |
| 0 | 678 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); |
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679 tty->print_cr(" pns(void* sp, void* fp, void* pc) - print native (i.e. mixed) stack trace. E.g."); |
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680 tty->print_cr(" pns($sp, $rbp, $pc) on Linux/amd64 and Solaris/amd64 or"); |
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681 tty->print_cr(" pns($sp, $ebp, $pc) on Linux/x86 or"); |
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682 tty->print_cr(" pns($sp, 0, $pc) on Linux/ppc64 or"); |
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683 tty->print_cr(" pns($sp + 0x7ff, 0, $pc) on Solaris/SPARC"); |
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684 tty->print_cr(" - in gdb do 'set overload-resolution off' before calling pns()"); |
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685 tty->print_cr(" - in dbx do 'frame 1' before calling pns()"); |
| 0 | 686 |
| 687 tty->print_cr("misc."); | |
| 688 tty->print_cr(" flush() - flushes the log file"); | |
| 4944 | 689 tty->print_cr(" events() - dump events from ring buffers"); |
| 0 | 690 |
| 691 | |
| 692 tty->print_cr("compiler debugging"); | |
| 693 tty->print_cr(" debug() - to set things up for compiler debugging"); | |
| 694 tty->print_cr(" ndebug() - undo debug"); | |
| 695 } | |
| 696 | |
| 4006 | 697 #endif // !PRODUCT |
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698 |
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699 void print_native_stack(outputStream* st, frame fr, Thread* t, char* buf, int buf_size) { |
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700 |
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701 // see if it's a valid frame |
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702 if (fr.pc()) { |
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703 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)"); |
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704 |
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705 int count = 0; |
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706 while (count++ < StackPrintLimit) { |
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707 fr.print_on_error(st, buf, buf_size); |
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708 st->cr(); |
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709 // Compiled code may use EBP register on x86 so it looks like |
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710 // non-walkable C frame. Use frame.sender() for java frames. |
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711 if (t && t->is_Java_thread()) { |
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712 // Catch very first native frame by using stack address. |
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713 // For JavaThread stack_base and stack_size should be set. |
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714 if (!t->on_local_stack((address)(fr.real_fp() + 1))) { |
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715 break; |
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716 } |
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717 if (fr.is_java_frame() || fr.is_native_frame() || fr.is_runtime_frame()) { |
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718 RegisterMap map((JavaThread*)t, false); // No update |
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719 fr = fr.sender(&map); |
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720 } else { |
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721 fr = os::get_sender_for_C_frame(&fr); |
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722 } |
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723 } else { |
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724 // is_first_C_frame() does only simple checks for frame pointer, |
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725 // it will pass if java compiled code has a pointer in EBP. |
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726 if (os::is_first_C_frame(&fr)) break; |
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727 fr = os::get_sender_for_C_frame(&fr); |
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728 } |
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729 } |
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730 |
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731 if (count > StackPrintLimit) { |
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732 st->print_cr("...<more frames>..."); |
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733 } |
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734 |
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735 st->cr(); |
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736 } |
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737 } |
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738 |
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739 #ifndef PRODUCT |
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740 |
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741 extern "C" void pns(void* sp, void* fp, void* pc) { // print native stack |
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742 Command c("pns"); |
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743 static char buf[O_BUFLEN]; |
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744 Thread* t = ThreadLocalStorage::get_thread_slow(); |
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745 // Call generic frame constructor (certain arguments may be ignored) |
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746 frame fr(sp, fp, pc); |
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747 print_native_stack(tty, fr, t, buf, sizeof(buf)); |
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748 } |
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749 |
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750 #endif // !PRODUCT |