Mercurial > hg > truffle
annotate src/share/vm/utilities/debug.cpp @ 20586:03e6d34be1f5
8038268: VM Crashes in MetaspaceShared::generate_vtable_methods while creating CDS archive with limiting SharedMiscCodeSize
Summary: estimate the minimum required size for the misc code region and check if the specified misc code region size meets the minimum size requirement
Reviewed-by: jiangli, dholmes
| author | ccheung |
|---|---|
| date | Thu, 30 Oct 2014 13:38:00 -0700 |
| parents | 78bbf4d43a14 |
| children | 7848fc12602b |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2014, 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 } | |
| 305 } | |
| 306 } | |
| 307 | |
| 308 static bool error_reported = false; | |
| 309 | |
| 310 // call this when the VM is dying--it might loosen some asserts | |
| 311 void set_error_reported() { | |
| 312 error_reported = true; | |
| 313 } | |
| 314 | |
| 315 bool is_error_reported() { | |
| 316 return error_reported; | |
| 317 } | |
| 318 | |
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319 #ifndef PRODUCT |
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320 #include <signal.h> |
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321 |
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322 void test_error_handler() { |
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323 uintx test_num = ErrorHandlerTest; |
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324 if (test_num == 0) return; |
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325 |
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326 // If asserts are disabled, use the corresponding guarantee instead. |
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327 size_t n = test_num; |
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328 NOT_DEBUG(if (n <= 2) n += 2); |
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329 |
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330 const char* const str = "hello"; |
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331 const size_t num = (size_t)os::vm_page_size(); |
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332 |
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333 const char* const eol = os::line_separator(); |
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334 const char* const msg = "this message should be truncated during formatting"; |
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335 char * const dataPtr = NULL; // bad data pointer |
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336 const void (*funcPtr)(void) = (const void(*)()) 0xF; // bad function pointer |
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337 |
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338 // Keep this in sync with test/runtime/6888954/vmerrors.sh. |
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339 switch (n) { |
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340 case 1: assert(str == NULL, "expected null"); |
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341 case 2: assert(num == 1023 && *str == 'X', |
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342 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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343 case 3: guarantee(str == NULL, "expected null"); |
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344 case 4: guarantee(num == 1023 && *str == 'X', |
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345 err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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346 case 5: fatal("expected null"); |
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347 case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
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348 case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# " |
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349 "%s%s# %s%s# %s%s# %s%s# %s%s# " |
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350 "%s%s# %s%s# %s%s# %s%s# %s", |
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351 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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352 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
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353 msg, eol, msg, eol, msg, eol, msg, eol, msg)); |
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354 case 8: vm_exit_out_of_memory(num, OOM_MALLOC_ERROR, "ChunkPool::allocate"); |
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355 case 9: ShouldNotCallThis(); |
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356 case 10: ShouldNotReachHere(); |
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357 case 11: Unimplemented(); |
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358 // There's no guarantee the bad data pointer will crash us |
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359 // so "break" out to the ShouldNotReachHere(). |
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360 case 12: *dataPtr = '\0'; break; |
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361 // There's no guarantee the bad function pointer will crash us |
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362 // so "break" out to the ShouldNotReachHere(). |
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363 case 13: (*funcPtr)(); break; |
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364 |
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365 default: tty->print_cr("ERROR: %d: unexpected test_num value.", n); |
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366 } |
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367 ShouldNotReachHere(); |
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368 } |
| 4006 | 369 #endif // !PRODUCT |
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370 |
| 0 | 371 // ------ helper functions for debugging go here ------------ |
| 372 | |
| 373 // All debug entries should be wrapped with a stack allocated | |
| 374 // Command object. It makes sure a resource mark is set and | |
| 375 // flushes the logfile to prevent file sharing problems. | |
| 376 | |
| 377 class Command : public StackObj { | |
| 378 private: | |
| 379 ResourceMark rm; | |
| 380 ResetNoHandleMark rnhm; | |
| 381 HandleMark hm; | |
| 382 bool debug_save; | |
| 383 public: | |
| 384 static int level; | |
| 385 Command(const char* str) { | |
| 386 debug_save = Debugging; | |
| 387 Debugging = true; | |
| 388 if (level++ > 0) return; | |
| 389 tty->cr(); | |
| 390 tty->print_cr("\"Executing %s\"", str); | |
| 391 } | |
| 392 | |
| 4006 | 393 ~Command() { |
| 394 tty->flush(); | |
| 395 Debugging = debug_save; | |
| 396 level--; | |
| 397 } | |
| 0 | 398 }; |
| 399 | |
| 400 int Command::level = 0; | |
| 401 | |
| 4006 | 402 #ifndef PRODUCT |
| 403 | |
| 0 | 404 extern "C" void blob(CodeBlob* cb) { |
| 405 Command c("blob"); | |
| 406 cb->print(); | |
| 407 } | |
| 408 | |
| 409 | |
| 410 extern "C" void dump_vtable(address p) { | |
| 411 Command c("dump_vtable"); | |
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412 Klass* k = (Klass*)p; |
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413 InstanceKlass::cast(k)->vtable()->print(); |
| 0 | 414 } |
| 415 | |
| 416 | |
| 417 extern "C" void nm(intptr_t p) { | |
| 418 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) | |
| 419 Command c("nm"); | |
| 420 CodeBlob* cb = CodeCache::find_blob((address)p); | |
| 421 if (cb == NULL) { | |
| 422 tty->print_cr("NULL"); | |
| 423 } else { | |
| 424 cb->print(); | |
| 425 } | |
| 426 } | |
| 427 | |
| 428 | |
| 429 extern "C" void disnm(intptr_t p) { | |
| 430 Command c("disnm"); | |
| 431 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 2008 | 432 nmethod* nm = cb->as_nmethod_or_null(); |
| 433 if (nm) { | |
| 434 nm->print(); | |
| 435 Disassembler::decode(nm); | |
| 436 } else { | |
| 437 cb->print(); | |
| 438 Disassembler::decode(cb); | |
| 439 } | |
| 0 | 440 } |
| 441 | |
| 442 | |
| 443 extern "C" void printnm(intptr_t p) { | |
| 444 char buffer[256]; | |
| 445 sprintf(buffer, "printnm: " INTPTR_FORMAT, p); | |
| 446 Command c(buffer); | |
| 447 CodeBlob* cb = CodeCache::find_blob((address) p); | |
| 448 if (cb->is_nmethod()) { | |
| 449 nmethod* nm = (nmethod*)cb; | |
| 450 nm->print_nmethod(true); | |
| 451 } | |
| 452 } | |
| 453 | |
| 454 | |
| 455 extern "C" void universe() { | |
| 456 Command c("universe"); | |
| 457 Universe::print(); | |
| 458 } | |
| 459 | |
| 460 | |
| 461 extern "C" void verify() { | |
| 462 // try to run a verify on the entire system | |
| 463 // note: this may not be safe if we're not at a safepoint; for debugging, | |
| 464 // this manipulates the safepoint settings to avoid assertion failures | |
| 465 Command c("universe verify"); | |
| 466 bool safe = SafepointSynchronize::is_at_safepoint(); | |
| 467 if (!safe) { | |
| 468 tty->print_cr("warning: not at safepoint -- verify may fail"); | |
| 469 SafepointSynchronize::set_is_at_safepoint(); | |
| 470 } | |
| 471 // Ensure Eden top is correct before verification | |
| 472 Universe::heap()->prepare_for_verify(); | |
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473 Universe::verify(); |
| 0 | 474 if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); |
| 475 } | |
| 476 | |
| 477 | |
| 478 extern "C" void pp(void* p) { | |
| 479 Command c("pp"); | |
| 480 FlagSetting fl(PrintVMMessages, true); | |
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481 FlagSetting f2(DisplayVMOutput, true); |
| 0 | 482 if (Universe::heap()->is_in(p)) { |
| 483 oop obj = oop(p); | |
| 484 obj->print(); | |
| 485 } else { | |
| 4006 | 486 tty->print(PTR_FORMAT, p); |
| 0 | 487 } |
| 488 } | |
| 489 | |
| 490 | |
| 491 // pv: print vm-printable object | |
| 492 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } | |
| 493 extern "C" void findpc(intptr_t x); | |
| 494 | |
| 4006 | 495 #endif // !PRODUCT |
| 496 | |
| 0 | 497 extern "C" void ps() { // print stack |
| 4006 | 498 if (Thread::current() == NULL) return; |
| 0 | 499 Command c("ps"); |
| 500 | |
| 501 | |
| 502 // Prints the stack of the current Java thread | |
| 503 JavaThread* p = JavaThread::active(); | |
| 504 tty->print(" for thread: "); | |
| 505 p->print(); | |
| 506 tty->cr(); | |
| 507 | |
| 508 if (p->has_last_Java_frame()) { | |
| 509 // If the last_Java_fp is set we are in C land and | |
| 510 // can call the standard stack_trace function. | |
| 4006 | 511 #ifdef PRODUCT |
| 512 p->print_stack(); | |
| 513 } else { | |
| 514 tty->print_cr("Cannot find the last Java frame, printing stack disabled."); | |
| 515 #else // !PRODUCT | |
| 0 | 516 p->trace_stack(); |
| 517 } else { | |
| 518 frame f = os::current_frame(); | |
| 519 RegisterMap reg_map(p); | |
| 520 f = f.sender(®_map); | |
| 521 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); | |
| 522 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); | |
| 523 pd_ps(f); | |
| 4006 | 524 #endif // PRODUCT |
| 0 | 525 } |
| 526 | |
| 527 } | |
| 528 | |
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529 extern "C" void pfl() { |
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530 // print frame layout |
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531 Command c("pfl"); |
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532 JavaThread* p = JavaThread::active(); |
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533 tty->print(" for thread: "); |
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534 p->print(); |
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535 tty->cr(); |
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536 if (p->has_last_Java_frame()) { |
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537 p->print_frame_layout(); |
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538 } |
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539 } |
| 0 | 540 |
| 4006 | 541 #ifndef PRODUCT |
| 542 | |
| 0 | 543 extern "C" void psf() { // print stack frames |
| 544 { | |
| 545 Command c("psf"); | |
| 546 JavaThread* p = JavaThread::active(); | |
| 547 tty->print(" for thread: "); | |
| 548 p->print(); | |
| 549 tty->cr(); | |
| 550 if (p->has_last_Java_frame()) { | |
| 551 p->trace_frames(); | |
| 552 } | |
| 553 } | |
| 554 } | |
| 555 | |
| 556 | |
| 557 extern "C" void threads() { | |
| 558 Command c("threads"); | |
| 559 Threads::print(false, true); | |
| 560 } | |
| 561 | |
| 562 | |
| 563 extern "C" void psd() { | |
| 564 Command c("psd"); | |
| 565 SystemDictionary::print(); | |
| 566 } | |
| 567 | |
| 568 | |
| 569 extern "C" void safepoints() { | |
| 570 Command c("safepoints"); | |
| 571 SafepointSynchronize::print_state(); | |
| 572 } | |
| 573 | |
| 4006 | 574 #endif // !PRODUCT |
| 0 | 575 |
| 576 extern "C" void pss() { // print all stacks | |
| 4006 | 577 if (Thread::current() == NULL) return; |
| 0 | 578 Command c("pss"); |
| 4006 | 579 Threads::print(true, PRODUCT_ONLY(false) NOT_PRODUCT(true)); |
| 0 | 580 } |
| 581 | |
| 4006 | 582 #ifndef PRODUCT |
| 0 | 583 |
| 584 extern "C" void debug() { // to set things up for compiler debugging | |
| 585 Command c("debug"); | |
| 586 WizardMode = true; | |
| 587 PrintVMMessages = PrintCompilation = true; | |
| 588 PrintInlining = PrintAssembly = true; | |
| 589 tty->flush(); | |
| 590 } | |
| 591 | |
| 592 | |
| 593 extern "C" void ndebug() { // undo debug() | |
| 594 Command c("ndebug"); | |
| 595 PrintCompilation = false; | |
| 596 PrintInlining = PrintAssembly = false; | |
| 597 tty->flush(); | |
| 598 } | |
| 599 | |
| 600 | |
| 601 extern "C" void flush() { | |
| 602 Command c("flush"); | |
| 603 tty->flush(); | |
| 604 } | |
| 605 | |
| 4944 | 606 extern "C" void events() { |
| 607 Command c("events"); | |
| 608 Events::print(); | |
| 609 } | |
| 0 | 610 |
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611 extern "C" Method* findm(intptr_t pc) { |
| 0 | 612 Command c("findm"); |
| 613 nmethod* nm = CodeCache::find_nmethod((address)pc); | |
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614 return (nm == NULL) ? (Method*)NULL : nm->method(); |
| 0 | 615 } |
| 616 | |
| 617 | |
| 618 extern "C" nmethod* findnm(intptr_t addr) { | |
| 619 Command c("findnm"); | |
| 620 return CodeCache::find_nmethod((address)addr); | |
| 621 } | |
| 622 | |
| 623 // Another interface that isn't ambiguous in dbx. | |
| 624 // Can we someday rename the other find to hsfind? | |
| 625 extern "C" void hsfind(intptr_t x) { | |
| 626 Command c("hsfind"); | |
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627 os::print_location(tty, x, false); |
| 0 | 628 } |
| 629 | |
| 630 | |
| 631 extern "C" void find(intptr_t x) { | |
| 632 Command c("find"); | |
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633 os::print_location(tty, x, false); |
| 0 | 634 } |
| 635 | |
| 636 | |
| 637 extern "C" void findpc(intptr_t x) { | |
| 638 Command c("findpc"); | |
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639 os::print_location(tty, x, true); |
| 0 | 640 } |
| 641 | |
| 642 | |
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643 // Need method pointer to find bcp, when not in permgen. |
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644 extern "C" void findbcp(intptr_t method, intptr_t bcp) { |
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645 Command c("findbcp"); |
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646 Method* mh = (Method*)method; |
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647 if (!mh->is_native()) { |
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648 tty->print_cr("bci_from(%p) = %d; print_codes():", |
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649 mh, mh->bci_from(address(bcp))); |
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650 mh->print_codes_on(tty); |
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651 } |
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652 } |
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653 |
| 0 | 654 // int versions of all methods to avoid having to type type casts in the debugger |
| 655 | |
| 656 void pp(intptr_t p) { pp((void*)p); } | |
| 657 void pp(oop p) { pp((void*)p); } | |
| 658 | |
| 659 void help() { | |
| 660 Command c("help"); | |
| 661 tty->print_cr("basic"); | |
| 662 tty->print_cr(" pp(void* p) - try to make sense of p"); | |
| 663 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); | |
| 664 tty->print_cr(" ps() - print current thread stack"); | |
| 665 tty->print_cr(" pss() - print all thread stacks"); | |
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666 tty->print_cr(" pm(int pc) - print Method* given compiled PC"); |
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667 tty->print_cr(" findm(intptr_t pc) - finds Method*"); |
| 0 | 668 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); |
| 669 | |
| 670 tty->print_cr("misc."); | |
| 671 tty->print_cr(" flush() - flushes the log file"); | |
| 4944 | 672 tty->print_cr(" events() - dump events from ring buffers"); |
| 0 | 673 |
| 674 | |
| 675 tty->print_cr("compiler debugging"); | |
| 676 tty->print_cr(" debug() - to set things up for compiler debugging"); | |
| 677 tty->print_cr(" ndebug() - undo debug"); | |
| 678 } | |
| 679 | |
| 4006 | 680 #endif // !PRODUCT |