The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.os; |
| 18 | |
| 19 | import java.io.FileOutputStream; |
| 20 | import java.io.IOException; |
| 21 | import java.io.OutputStreamWriter; |
| 22 | import java.io.PrintWriter; |
| 23 | |
| 24 | import org.apache.harmony.dalvik.ddmc.Chunk; |
| 25 | import org.apache.harmony.dalvik.ddmc.ChunkHandler; |
| 26 | import org.apache.harmony.dalvik.ddmc.DdmServer; |
| 27 | |
| 28 | import dalvik.bytecode.Opcodes; |
| 29 | import dalvik.system.VMDebug; |
| 30 | |
| 31 | |
| 32 | /** |
| 33 | * Provides various debugging functions for Android applications, including |
| 34 | * tracing and allocation counts. |
| 35 | * <p><strong>Logging Trace Files</strong></p> |
| 36 | * <p>Debug can create log files that give details about an application, such as |
| 37 | * a call stack and start/stop times for any running methods. See <a |
| 38 | href="{@docRoot}guide/developing/tools/traceview.html">Traceview: A Graphical Log Viewer</a> for |
| 39 | * information about reading trace files. To start logging trace files, call one |
| 40 | * of the startMethodTracing() methods. To stop tracing, call |
| 41 | * {@link #stopMethodTracing()}. |
| 42 | */ |
| 43 | public final class Debug |
| 44 | { |
| 45 | /** |
| 46 | * Flags for startMethodTracing(). These can be ORed together. |
| 47 | * |
| 48 | * TRACE_COUNT_ALLOCS adds the results from startAllocCounting to the |
| 49 | * trace key file. |
| 50 | */ |
| 51 | public static final int TRACE_COUNT_ALLOCS = VMDebug.TRACE_COUNT_ALLOCS; |
| 52 | |
| 53 | /** |
| 54 | * Flags for printLoadedClasses(). Default behavior is to only show |
| 55 | * the class name. |
| 56 | */ |
| 57 | public static final int SHOW_FULL_DETAIL = 1; |
| 58 | public static final int SHOW_CLASSLOADER = (1 << 1); |
| 59 | public static final int SHOW_INITIALIZED = (1 << 2); |
| 60 | |
| 61 | // set/cleared by waitForDebugger() |
| 62 | private static volatile boolean mWaiting = false; |
| 63 | |
| 64 | private Debug() {} |
| 65 | |
| 66 | /* |
| 67 | * How long to wait for the debugger to finish sending requests. I've |
| 68 | * seen this hit 800msec on the device while waiting for a response |
| 69 | * to travel over USB and get processed, so we take that and add |
| 70 | * half a second. |
| 71 | */ |
| 72 | private static final int MIN_DEBUGGER_IDLE = 1300; // msec |
| 73 | |
| 74 | /* how long to sleep when polling for activity */ |
| 75 | private static final int SPIN_DELAY = 200; // msec |
| 76 | |
| 77 | /** |
| 78 | * Default trace file path and file |
| 79 | */ |
| 80 | private static final String DEFAULT_TRACE_PATH_PREFIX = "/sdcard/"; |
| 81 | private static final String DEFAULT_TRACE_BODY = "dmtrace"; |
| 82 | private static final String DEFAULT_TRACE_EXTENSION = ".trace"; |
| 83 | private static final String DEFAULT_TRACE_FILE_PATH = |
| 84 | DEFAULT_TRACE_PATH_PREFIX + DEFAULT_TRACE_BODY |
| 85 | + DEFAULT_TRACE_EXTENSION; |
| 86 | |
| 87 | |
| 88 | /** |
| 89 | * This class is used to retrieved various statistics about the memory mappings for this |
| 90 | * process. The returns info broken down by dalvik, native, and other. All results are in kB. |
| 91 | */ |
| 92 | public static class MemoryInfo { |
| 93 | /** The proportional set size for dalvik. */ |
| 94 | public int dalvikPss; |
| 95 | /** The private dirty pages used by dalvik. */ |
| 96 | public int dalvikPrivateDirty; |
| 97 | /** The shared dirty pages used by dalvik. */ |
| 98 | public int dalvikSharedDirty; |
| 99 | |
| 100 | /** The proportional set size for the native heap. */ |
| 101 | public int nativePss; |
| 102 | /** The private dirty pages used by the native heap. */ |
| 103 | public int nativePrivateDirty; |
| 104 | /** The shared dirty pages used by the native heap. */ |
| 105 | public int nativeSharedDirty; |
| 106 | |
| 107 | /** The proportional set size for everything else. */ |
| 108 | public int otherPss; |
| 109 | /** The private dirty pages used by everything else. */ |
| 110 | public int otherPrivateDirty; |
| 111 | /** The shared dirty pages used by everything else. */ |
| 112 | public int otherSharedDirty; |
| 113 | } |
| 114 | |
| 115 | |
| 116 | /** |
| 117 | * Wait until a debugger attaches. As soon as the debugger attaches, |
| 118 | * this returns, so you will need to place a breakpoint after the |
| 119 | * waitForDebugger() call if you want to start tracing immediately. |
| 120 | */ |
| 121 | public static void waitForDebugger() { |
| 122 | if (!VMDebug.isDebuggingEnabled()) { |
| 123 | //System.out.println("debugging not enabled, not waiting"); |
| 124 | return; |
| 125 | } |
| 126 | if (isDebuggerConnected()) |
| 127 | return; |
| 128 | |
| 129 | // if DDMS is listening, inform them of our plight |
| 130 | System.out.println("Sending WAIT chunk"); |
| 131 | byte[] data = new byte[] { 0 }; // 0 == "waiting for debugger" |
| 132 | Chunk waitChunk = new Chunk(ChunkHandler.type("WAIT"), data, 0, 1); |
| 133 | DdmServer.sendChunk(waitChunk); |
| 134 | |
| 135 | mWaiting = true; |
| 136 | while (!isDebuggerConnected()) { |
| 137 | try { Thread.sleep(SPIN_DELAY); } |
| 138 | catch (InterruptedException ie) {} |
| 139 | } |
| 140 | mWaiting = false; |
| 141 | |
| 142 | System.out.println("Debugger has connected"); |
| 143 | |
| 144 | /* |
| 145 | * There is no "ready to go" signal from the debugger, and we're |
| 146 | * not allowed to suspend ourselves -- the debugger expects us to |
| 147 | * be running happily, and gets confused if we aren't. We need to |
| 148 | * allow the debugger a chance to set breakpoints before we start |
| 149 | * running again. |
| 150 | * |
| 151 | * Sit and spin until the debugger has been idle for a short while. |
| 152 | */ |
| 153 | while (true) { |
| 154 | long delta = VMDebug.lastDebuggerActivity(); |
| 155 | if (delta < 0) { |
| 156 | System.out.println("debugger detached?"); |
| 157 | break; |
| 158 | } |
| 159 | |
| 160 | if (delta < MIN_DEBUGGER_IDLE) { |
| 161 | System.out.println("waiting for debugger to settle..."); |
| 162 | try { Thread.sleep(SPIN_DELAY); } |
| 163 | catch (InterruptedException ie) {} |
| 164 | } else { |
| 165 | System.out.println("debugger has settled (" + delta + ")"); |
| 166 | break; |
| 167 | } |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Returns "true" if one or more threads is waiting for a debugger |
| 173 | * to attach. |
| 174 | */ |
| 175 | public static boolean waitingForDebugger() { |
| 176 | return mWaiting; |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Determine if a debugger is currently attached. |
| 181 | */ |
| 182 | public static boolean isDebuggerConnected() { |
| 183 | return VMDebug.isDebuggerConnected(); |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Change the JDWP port. |
| 188 | * |
| 189 | * @deprecated no longer needed or useful |
| 190 | */ |
| 191 | @Deprecated |
| 192 | public static void changeDebugPort(int port) {} |
| 193 | |
| 194 | /** |
| 195 | * This is the pathname to the sysfs file that enables and disables |
| 196 | * tracing on the qemu emulator. |
| 197 | */ |
| 198 | private static final String SYSFS_QEMU_TRACE_STATE = "/sys/qemu_trace/state"; |
| 199 | |
| 200 | /** |
| 201 | * Enable qemu tracing. For this to work requires running everything inside |
| 202 | * the qemu emulator; otherwise, this method will have no effect. The trace |
| 203 | * file is specified on the command line when the emulator is started. For |
| 204 | * example, the following command line <br /> |
| 205 | * <code>emulator -trace foo</code><br /> |
| 206 | * will start running the emulator and create a trace file named "foo". This |
| 207 | * method simply enables writing the trace records to the trace file. |
| 208 | * |
| 209 | * <p> |
| 210 | * The main differences between this and {@link #startMethodTracing()} are |
| 211 | * that tracing in the qemu emulator traces every cpu instruction of every |
| 212 | * process, including kernel code, so we have more complete information, |
| 213 | * including all context switches. We can also get more detailed information |
| 214 | * such as cache misses. The sequence of calls is determined by |
| 215 | * post-processing the instruction trace. The qemu tracing is also done |
| 216 | * without modifying the application or perturbing the timing of calls |
| 217 | * because no instrumentation is added to the application being traced. |
| 218 | * </p> |
| 219 | * |
| 220 | * <p> |
| 221 | * One limitation of using this method compared to using |
| 222 | * {@link #startMethodTracing()} on the real device is that the emulator |
| 223 | * does not model all of the real hardware effects such as memory and |
| 224 | * bus contention. The emulator also has a simple cache model and cannot |
| 225 | * capture all the complexities of a real cache. |
| 226 | * </p> |
| 227 | */ |
| 228 | public static void startNativeTracing() { |
| 229 | // Open the sysfs file for writing and write "1" to it. |
| 230 | PrintWriter outStream = null; |
| 231 | try { |
| 232 | FileOutputStream fos = new FileOutputStream(SYSFS_QEMU_TRACE_STATE); |
| 233 | outStream = new PrintWriter(new OutputStreamWriter(fos)); |
| 234 | outStream.println("1"); |
| 235 | } catch (Exception e) { |
| 236 | } finally { |
| 237 | if (outStream != null) |
| 238 | outStream.close(); |
| 239 | } |
| 240 | |
| 241 | VMDebug.startEmulatorTracing(); |
| 242 | } |
| 243 | |
| 244 | /** |
| 245 | * Stop qemu tracing. See {@link #startNativeTracing()} to start tracing. |
| 246 | * |
| 247 | * <p>Tracing can be started and stopped as many times as desired. When |
| 248 | * the qemu emulator itself is stopped then the buffered trace records |
| 249 | * are flushed and written to the trace file. In fact, it is not necessary |
| 250 | * to call this method at all; simply killing qemu is sufficient. But |
| 251 | * starting and stopping a trace is useful for examining a specific |
| 252 | * region of code.</p> |
| 253 | */ |
| 254 | public static void stopNativeTracing() { |
| 255 | VMDebug.stopEmulatorTracing(); |
| 256 | |
| 257 | // Open the sysfs file for writing and write "0" to it. |
| 258 | PrintWriter outStream = null; |
| 259 | try { |
| 260 | FileOutputStream fos = new FileOutputStream(SYSFS_QEMU_TRACE_STATE); |
| 261 | outStream = new PrintWriter(new OutputStreamWriter(fos)); |
| 262 | outStream.println("0"); |
| 263 | } catch (Exception e) { |
| 264 | // We could print an error message here but we probably want |
| 265 | // to quietly ignore errors if we are not running in the emulator. |
| 266 | } finally { |
| 267 | if (outStream != null) |
| 268 | outStream.close(); |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * Enable "emulator traces", in which information about the current |
| 274 | * method is made available to the "emulator -trace" feature. There |
| 275 | * is no corresponding "disable" call -- this is intended for use by |
| 276 | * the framework when tracing should be turned on and left that way, so |
| 277 | * that traces captured with F9/F10 will include the necessary data. |
| 278 | * |
| 279 | * This puts the VM into "profile" mode, which has performance |
| 280 | * consequences. |
| 281 | * |
| 282 | * To temporarily enable tracing, use {@link #startNativeTracing()}. |
| 283 | */ |
| 284 | public static void enableEmulatorTraceOutput() { |
| 285 | VMDebug.startEmulatorTracing(); |
| 286 | } |
| 287 | |
| 288 | /** |
| 289 | * Start method tracing with default log name and buffer size. See <a |
| 290 | href="{@docRoot}guide/developing/tools/traceview.html">Traceview: A Graphical Log Viewer</a> for |
| 291 | * information about reading these files. Call stopMethodTracing() to stop |
| 292 | * tracing. |
| 293 | */ |
| 294 | public static void startMethodTracing() { |
| 295 | VMDebug.startMethodTracing(DEFAULT_TRACE_FILE_PATH, 0, 0); |
| 296 | } |
| 297 | |
| 298 | /** |
| 299 | * Start method tracing, specifying the trace log file name. The trace |
| 300 | * file will be put under "/sdcard" unless an absolute path is given. |
| 301 | * See <a |
| 302 | href="{@docRoot}guide/developing/tools/traceview.html">Traceview: A Graphical Log Viewer</a> for |
| 303 | * information about reading trace files. |
| 304 | * |
| 305 | * @param traceName Name for the trace log file to create. |
| 306 | * If no name argument is given, this value defaults to "/sdcard/dmtrace.trace". |
| 307 | * If the files already exist, they will be truncated. |
| 308 | * If the trace file given does not end in ".trace", it will be appended for you. |
| 309 | */ |
| 310 | public static void startMethodTracing(String traceName) { |
| 311 | startMethodTracing(traceName, 0, 0); |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Start method tracing, specifying the trace log file name and the |
| 316 | * buffer size. The trace files will be put under "/sdcard" unless an |
| 317 | * absolute path is given. See <a |
| 318 | href="{@docRoot}guide/developing/tools/traceview.html">Traceview: A Graphical Log Viewer</a> for |
| 319 | * information about reading trace files. |
| 320 | * @param traceName Name for the trace log file to create. |
| 321 | * If no name argument is given, this value defaults to "/sdcard/dmtrace.trace". |
| 322 | * If the files already exist, they will be truncated. |
| 323 | * If the trace file given does not end in ".trace", it will be appended for you. |
| 324 | * |
| 325 | * @param bufferSize The maximum amount of trace data we gather. If not given, it defaults to 8MB. |
| 326 | */ |
| 327 | public static void startMethodTracing(String traceName, int bufferSize) { |
| 328 | startMethodTracing(traceName, bufferSize, 0); |
| 329 | } |
| 330 | |
| 331 | /** |
| 332 | * Start method tracing, specifying the trace log file name and the |
| 333 | * buffer size. The trace files will be put under "/sdcard" unless an |
| 334 | * absolute path is given. See <a |
| 335 | href="{@docRoot}guide/developing/tools/traceview.html">Traceview: A Graphical Log Viewer</a> for |
| 336 | * information about reading trace files. |
| 337 | * |
| 338 | * <p> |
| 339 | * When method tracing is enabled, the VM will run more slowly than |
| 340 | * usual, so the timings from the trace files should only be considered |
| 341 | * in relative terms (e.g. was run #1 faster than run #2). The times |
| 342 | * for native methods will not change, so don't try to use this to |
| 343 | * compare the performance of interpreted and native implementations of the |
| 344 | * same method. As an alternative, consider using "native" tracing |
| 345 | * in the emulator via {@link #startNativeTracing()}. |
| 346 | * </p> |
| 347 | * |
| 348 | * @param traceName Name for the trace log file to create. |
| 349 | * If no name argument is given, this value defaults to "/sdcard/dmtrace.trace". |
| 350 | * If the files already exist, they will be truncated. |
| 351 | * If the trace file given does not end in ".trace", it will be appended for you. |
| 352 | * @param bufferSize The maximum amount of trace data we gather. If not given, it defaults to 8MB. |
| 353 | */ |
| 354 | public static void startMethodTracing(String traceName, int bufferSize, |
| 355 | int flags) { |
| 356 | |
| 357 | String pathName = traceName; |
| 358 | if (pathName.charAt(0) != '/') |
| 359 | pathName = DEFAULT_TRACE_PATH_PREFIX + pathName; |
| 360 | if (!pathName.endsWith(DEFAULT_TRACE_EXTENSION)) |
| 361 | pathName = pathName + DEFAULT_TRACE_EXTENSION; |
| 362 | |
| 363 | VMDebug.startMethodTracing(pathName, bufferSize, flags); |
| 364 | } |
| 365 | |
| 366 | /** |
Andy McFadden | 0797083 | 2009-03-24 18:15:57 -0700 | [diff] [blame] | 367 | * Determine whether method tracing is currently active. |
| 368 | * @hide |
| 369 | */ |
| 370 | public static boolean isMethodTracingActive() { |
| 371 | return VMDebug.isMethodTracingActive(); |
| 372 | } |
| 373 | |
| 374 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 375 | * Stop method tracing. |
| 376 | */ |
| 377 | public static void stopMethodTracing() { |
| 378 | VMDebug.stopMethodTracing(); |
| 379 | } |
| 380 | |
| 381 | /** |
| 382 | * Get an indication of thread CPU usage. The value returned |
| 383 | * indicates the amount of time that the current thread has spent |
| 384 | * executing code or waiting for certain types of I/O. |
| 385 | * |
| 386 | * The time is expressed in nanoseconds, and is only meaningful |
| 387 | * when compared to the result from an earlier call. Note that |
| 388 | * nanosecond resolution does not imply nanosecond accuracy. |
| 389 | * |
| 390 | * On system which don't support this operation, the call returns -1. |
| 391 | */ |
| 392 | public static long threadCpuTimeNanos() { |
| 393 | return VMDebug.threadCpuTimeNanos(); |
| 394 | } |
| 395 | |
| 396 | /** |
| 397 | * Count the number and aggregate size of memory allocations between |
| 398 | * two points. |
| 399 | * |
| 400 | * The "start" function resets the counts and enables counting. The |
| 401 | * "stop" function disables the counting so that the analysis code |
| 402 | * doesn't cause additional allocations. The "get" function returns |
| 403 | * the specified value. |
| 404 | * |
| 405 | * Counts are kept for the system as a whole and for each thread. |
| 406 | * The per-thread counts for threads other than the current thread |
| 407 | * are not cleared by the "reset" or "start" calls. |
| 408 | */ |
| 409 | public static void startAllocCounting() { |
| 410 | VMDebug.startAllocCounting(); |
| 411 | } |
| 412 | public static void stopAllocCounting() { |
| 413 | VMDebug.stopAllocCounting(); |
| 414 | } |
| 415 | |
| 416 | public static int getGlobalAllocCount() { |
| 417 | return VMDebug.getAllocCount(VMDebug.KIND_GLOBAL_ALLOCATED_OBJECTS); |
| 418 | } |
| 419 | public static int getGlobalAllocSize() { |
| 420 | return VMDebug.getAllocCount(VMDebug.KIND_GLOBAL_ALLOCATED_BYTES); |
| 421 | } |
| 422 | public static int getGlobalFreedCount() { |
| 423 | return VMDebug.getAllocCount(VMDebug.KIND_GLOBAL_FREED_OBJECTS); |
| 424 | } |
| 425 | public static int getGlobalFreedSize() { |
| 426 | return VMDebug.getAllocCount(VMDebug.KIND_GLOBAL_FREED_BYTES); |
| 427 | } |
| 428 | public static int getGlobalExternalAllocCount() { |
| 429 | return VMDebug.getAllocCount(VMDebug.KIND_GLOBAL_EXT_ALLOCATED_OBJECTS); |
| 430 | } |
| 431 | public static int getGlobalExternalAllocSize() { |
| 432 | return VMDebug.getAllocCount(VMDebug.KIND_GLOBAL_EXT_ALLOCATED_BYTES); |
| 433 | } |
| 434 | public static int getGlobalExternalFreedCount() { |
| 435 | return VMDebug.getAllocCount(VMDebug.KIND_GLOBAL_EXT_FREED_OBJECTS); |
| 436 | } |
| 437 | public static int getGlobalExternalFreedSize() { |
| 438 | return VMDebug.getAllocCount(VMDebug.KIND_GLOBAL_EXT_FREED_BYTES); |
| 439 | } |
| 440 | public static int getGlobalGcInvocationCount() { |
| 441 | return VMDebug.getAllocCount(VMDebug.KIND_GLOBAL_GC_INVOCATIONS); |
| 442 | } |
| 443 | public static int getThreadAllocCount() { |
| 444 | return VMDebug.getAllocCount(VMDebug.KIND_THREAD_ALLOCATED_OBJECTS); |
| 445 | } |
| 446 | public static int getThreadAllocSize() { |
| 447 | return VMDebug.getAllocCount(VMDebug.KIND_THREAD_ALLOCATED_BYTES); |
| 448 | } |
| 449 | public static int getThreadExternalAllocCount() { |
| 450 | return VMDebug.getAllocCount(VMDebug.KIND_THREAD_EXT_ALLOCATED_OBJECTS); |
| 451 | } |
| 452 | public static int getThreadExternalAllocSize() { |
| 453 | return VMDebug.getAllocCount(VMDebug.KIND_THREAD_EXT_ALLOCATED_BYTES); |
| 454 | } |
| 455 | public static int getThreadGcInvocationCount() { |
| 456 | return VMDebug.getAllocCount(VMDebug.KIND_THREAD_GC_INVOCATIONS); |
| 457 | } |
| 458 | |
| 459 | public static void resetGlobalAllocCount() { |
| 460 | VMDebug.resetAllocCount(VMDebug.KIND_GLOBAL_ALLOCATED_OBJECTS); |
| 461 | } |
| 462 | public static void resetGlobalAllocSize() { |
| 463 | VMDebug.resetAllocCount(VMDebug.KIND_GLOBAL_ALLOCATED_BYTES); |
| 464 | } |
| 465 | public static void resetGlobalFreedCount() { |
| 466 | VMDebug.resetAllocCount(VMDebug.KIND_GLOBAL_FREED_OBJECTS); |
| 467 | } |
| 468 | public static void resetGlobalFreedSize() { |
| 469 | VMDebug.resetAllocCount(VMDebug.KIND_GLOBAL_FREED_BYTES); |
| 470 | } |
| 471 | public static void resetGlobalExternalAllocCount() { |
| 472 | VMDebug.resetAllocCount(VMDebug.KIND_GLOBAL_EXT_ALLOCATED_OBJECTS); |
| 473 | } |
| 474 | public static void resetGlobalExternalAllocSize() { |
| 475 | VMDebug.resetAllocCount(VMDebug.KIND_GLOBAL_EXT_ALLOCATED_BYTES); |
| 476 | } |
| 477 | public static void resetGlobalExternalFreedCount() { |
| 478 | VMDebug.resetAllocCount(VMDebug.KIND_GLOBAL_EXT_FREED_OBJECTS); |
| 479 | } |
| 480 | public static void resetGlobalExternalFreedSize() { |
| 481 | VMDebug.resetAllocCount(VMDebug.KIND_GLOBAL_EXT_FREED_BYTES); |
| 482 | } |
| 483 | public static void resetGlobalGcInvocationCount() { |
| 484 | VMDebug.resetAllocCount(VMDebug.KIND_GLOBAL_GC_INVOCATIONS); |
| 485 | } |
| 486 | public static void resetThreadAllocCount() { |
| 487 | VMDebug.resetAllocCount(VMDebug.KIND_THREAD_ALLOCATED_OBJECTS); |
| 488 | } |
| 489 | public static void resetThreadAllocSize() { |
| 490 | VMDebug.resetAllocCount(VMDebug.KIND_THREAD_ALLOCATED_BYTES); |
| 491 | } |
| 492 | public static void resetThreadExternalAllocCount() { |
| 493 | VMDebug.resetAllocCount(VMDebug.KIND_THREAD_EXT_ALLOCATED_OBJECTS); |
| 494 | } |
| 495 | public static void resetThreadExternalAllocSize() { |
| 496 | VMDebug.resetAllocCount(VMDebug.KIND_THREAD_EXT_ALLOCATED_BYTES); |
| 497 | } |
| 498 | public static void resetThreadGcInvocationCount() { |
| 499 | VMDebug.resetAllocCount(VMDebug.KIND_THREAD_GC_INVOCATIONS); |
| 500 | } |
| 501 | public static void resetAllCounts() { |
| 502 | VMDebug.resetAllocCount(VMDebug.KIND_ALL_COUNTS); |
| 503 | } |
| 504 | |
| 505 | /** |
| 506 | * Returns the size of the native heap. |
| 507 | * @return The size of the native heap in bytes. |
| 508 | */ |
| 509 | public static native long getNativeHeapSize(); |
| 510 | |
| 511 | /** |
| 512 | * Returns the amount of allocated memory in the native heap. |
| 513 | * @return The allocated size in bytes. |
| 514 | */ |
| 515 | public static native long getNativeHeapAllocatedSize(); |
| 516 | |
| 517 | /** |
| 518 | * Returns the amount of free memory in the native heap. |
| 519 | * @return The freed size in bytes. |
| 520 | */ |
| 521 | public static native long getNativeHeapFreeSize(); |
| 522 | |
| 523 | /** |
| 524 | * Retrieves information about this processes memory usages. This information is broken down by |
| 525 | * how much is in use by dalivk, the native heap, and everything else. |
| 526 | */ |
| 527 | public static native void getMemoryInfo(MemoryInfo memoryInfo); |
| 528 | |
| 529 | /** |
| 530 | * Establish an object allocation limit in the current thread. Useful |
| 531 | * for catching regressions in code that is expected to operate |
| 532 | * without causing any allocations. |
| 533 | * |
| 534 | * Pass in the maximum number of allowed allocations. Use -1 to disable |
| 535 | * the limit. Returns the previous limit. |
| 536 | * |
| 537 | * The preferred way to use this is: |
| 538 | * |
| 539 | * int prevLimit = -1; |
| 540 | * try { |
| 541 | * prevLimit = Debug.setAllocationLimit(0); |
| 542 | * ... do stuff that's not expected to allocate memory ... |
| 543 | * } finally { |
| 544 | * Debug.setAllocationLimit(prevLimit); |
| 545 | * } |
| 546 | * |
| 547 | * This allows limits to be nested. The try/finally ensures that the |
| 548 | * limit is reset if something fails. |
| 549 | * |
| 550 | * Exceeding the limit causes a dalvik.system.AllocationLimitError to |
| 551 | * be thrown from a memory allocation call. The limit is reset to -1 |
| 552 | * when this happens. |
| 553 | * |
| 554 | * The feature may be disabled in the VM configuration. If so, this |
| 555 | * call has no effect, and always returns -1. |
| 556 | */ |
| 557 | public static int setAllocationLimit(int limit) { |
| 558 | return VMDebug.setAllocationLimit(limit); |
| 559 | } |
| 560 | |
| 561 | /** |
| 562 | * Establish a global object allocation limit. This is similar to |
| 563 | * {@link #setAllocationLimit(int)} but applies to all threads in |
| 564 | * the VM. It will coexist peacefully with per-thread limits. |
| 565 | * |
| 566 | * [ The value of "limit" is currently restricted to 0 (no allocations |
| 567 | * allowed) or -1 (no global limit). This may be changed in a future |
| 568 | * release. ] |
| 569 | */ |
| 570 | public static int setGlobalAllocationLimit(int limit) { |
| 571 | if (limit != 0 && limit != -1) |
| 572 | throw new IllegalArgumentException("limit must be 0 or -1"); |
| 573 | return VMDebug.setGlobalAllocationLimit(limit); |
| 574 | } |
| 575 | |
| 576 | /** |
| 577 | * Dump a list of all currently loaded class to the log file. |
| 578 | * |
| 579 | * @param flags See constants above. |
| 580 | */ |
| 581 | public static void printLoadedClasses(int flags) { |
| 582 | VMDebug.printLoadedClasses(flags); |
| 583 | } |
| 584 | |
| 585 | /** |
| 586 | * Get the number of loaded classes. |
| 587 | * @return the number of loaded classes. |
| 588 | */ |
| 589 | public static int getLoadedClassCount() { |
| 590 | return VMDebug.getLoadedClassCount(); |
| 591 | } |
| 592 | |
| 593 | /** |
| 594 | * Dump "hprof" data to the specified file. This will cause a GC. |
| 595 | * |
| 596 | * @param fileName Full pathname of output file (e.g. "/sdcard/dump.hprof"). |
| 597 | * @throws UnsupportedOperationException if the VM was built without |
| 598 | * HPROF support. |
| 599 | * @throws IOException if an error occurs while opening or writing files. |
| 600 | */ |
| 601 | public static void dumpHprofData(String fileName) throws IOException { |
| 602 | VMDebug.dumpHprofData(fileName); |
| 603 | } |
| 604 | |
| 605 | /** |
| 606 | * Returns the number of sent transactions from this process. |
| 607 | * @return The number of sent transactions or -1 if it could not read t. |
| 608 | */ |
| 609 | public static native int getBinderSentTransactions(); |
| 610 | |
| 611 | /** |
| 612 | * Returns the number of received transactions from the binder driver. |
| 613 | * @return The number of received transactions or -1 if it could not read the stats. |
| 614 | */ |
| 615 | public static native int getBinderReceivedTransactions(); |
| 616 | |
| 617 | /** |
| 618 | * Returns the number of active local Binder objects that exist in the |
| 619 | * current process. |
| 620 | */ |
| 621 | public static final native int getBinderLocalObjectCount(); |
| 622 | |
| 623 | /** |
| 624 | * Returns the number of references to remote proxy Binder objects that |
| 625 | * exist in the current process. |
| 626 | */ |
| 627 | public static final native int getBinderProxyObjectCount(); |
| 628 | |
| 629 | /** |
| 630 | * Returns the number of death notification links to Binder objects that |
| 631 | * exist in the current process. |
| 632 | */ |
| 633 | public static final native int getBinderDeathObjectCount(); |
| 634 | |
| 635 | /** |
| 636 | * API for gathering and querying instruction counts. |
| 637 | * |
| 638 | * Example usage: |
| 639 | * Debug.InstructionCount icount = new Debug.InstructionCount(); |
| 640 | * icount.resetAndStart(); |
| 641 | * [... do lots of stuff ...] |
| 642 | * if (icount.collect()) { |
| 643 | * System.out.println("Total instructions executed: " |
| 644 | * + icount.globalTotal()); |
| 645 | * System.out.println("Method invocations: " |
| 646 | * + icount.globalMethodInvocations()); |
| 647 | * } |
| 648 | */ |
| 649 | public static class InstructionCount { |
| 650 | private static final int NUM_INSTR = 256; |
| 651 | |
| 652 | private int[] mCounts; |
| 653 | |
| 654 | public InstructionCount() { |
| 655 | mCounts = new int[NUM_INSTR]; |
| 656 | } |
| 657 | |
| 658 | /** |
| 659 | * Reset counters and ensure counts are running. Counts may |
| 660 | * have already been running. |
| 661 | * |
| 662 | * @return true if counting was started |
| 663 | */ |
| 664 | public boolean resetAndStart() { |
| 665 | try { |
| 666 | VMDebug.startInstructionCounting(); |
| 667 | VMDebug.resetInstructionCount(); |
| 668 | } catch (UnsupportedOperationException uoe) { |
| 669 | return false; |
| 670 | } |
| 671 | return true; |
| 672 | } |
| 673 | |
| 674 | /** |
| 675 | * Collect instruction counts. May or may not stop the |
| 676 | * counting process. |
| 677 | */ |
| 678 | public boolean collect() { |
| 679 | try { |
| 680 | VMDebug.stopInstructionCounting(); |
| 681 | VMDebug.getInstructionCount(mCounts); |
| 682 | } catch (UnsupportedOperationException uoe) { |
| 683 | return false; |
| 684 | } |
| 685 | return true; |
| 686 | } |
| 687 | |
| 688 | /** |
| 689 | * Return the total number of instructions executed globally (i.e. in |
| 690 | * all threads). |
| 691 | */ |
| 692 | public int globalTotal() { |
| 693 | int count = 0; |
| 694 | for (int i = 0; i < NUM_INSTR; i++) |
| 695 | count += mCounts[i]; |
| 696 | return count; |
| 697 | } |
| 698 | |
| 699 | /** |
| 700 | * Return the total number of method-invocation instructions |
| 701 | * executed globally. |
| 702 | */ |
| 703 | public int globalMethodInvocations() { |
| 704 | int count = 0; |
| 705 | |
| 706 | //count += mCounts[Opcodes.OP_EXECUTE_INLINE]; |
| 707 | count += mCounts[Opcodes.OP_INVOKE_VIRTUAL]; |
| 708 | count += mCounts[Opcodes.OP_INVOKE_SUPER]; |
| 709 | count += mCounts[Opcodes.OP_INVOKE_DIRECT]; |
| 710 | count += mCounts[Opcodes.OP_INVOKE_STATIC]; |
| 711 | count += mCounts[Opcodes.OP_INVOKE_INTERFACE]; |
| 712 | count += mCounts[Opcodes.OP_INVOKE_VIRTUAL_RANGE]; |
| 713 | count += mCounts[Opcodes.OP_INVOKE_SUPER_RANGE]; |
| 714 | count += mCounts[Opcodes.OP_INVOKE_DIRECT_RANGE]; |
| 715 | count += mCounts[Opcodes.OP_INVOKE_STATIC_RANGE]; |
| 716 | count += mCounts[Opcodes.OP_INVOKE_INTERFACE_RANGE]; |
| 717 | //count += mCounts[Opcodes.OP_INVOKE_DIRECT_EMPTY]; |
| 718 | count += mCounts[Opcodes.OP_INVOKE_VIRTUAL_QUICK]; |
| 719 | count += mCounts[Opcodes.OP_INVOKE_VIRTUAL_QUICK_RANGE]; |
| 720 | count += mCounts[Opcodes.OP_INVOKE_SUPER_QUICK]; |
| 721 | count += mCounts[Opcodes.OP_INVOKE_SUPER_QUICK_RANGE]; |
| 722 | return count; |
| 723 | } |
| 724 | }; |
| 725 | } |