AndroidRuntime.cpp revision f7d01dd7e14e01420c39e7fb8eca3cfa0f5f31b6
1/* 2 * Copyright (C) 2006 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#define ATRACE_TAG ATRACE_TAG_DALVIK 18#define LOG_TAG "AndroidRuntime" 19#define LOG_NDEBUG 1 20 21#include <android_runtime/AndroidRuntime.h> 22 23#include <android-base/properties.h> 24#include <binder/IBinder.h> 25#include <binder/IPCThreadState.h> 26#include <binder/IServiceManager.h> 27#include <utils/Log.h> 28#include <utils/misc.h> 29#include <utils/Trace.h> 30#include <binder/Parcel.h> 31#include <utils/threads.h> 32#include <cutils/properties.h> 33 34#include <SkGraphics.h> 35 36#include "jni.h" 37#include <nativehelper/JNIHelp.h> 38#include <nativehelper/JniInvocation.h> 39#include "android_util_Binder.h" 40 41#include <stdio.h> 42#include <signal.h> 43#include <sys/stat.h> 44#include <sys/types.h> 45#include <signal.h> 46#include <dirent.h> 47#include <assert.h> 48 49#include <string> 50#include <vector> 51 52using namespace android; 53using android::base::GetProperty; 54 55extern int register_android_os_Binder(JNIEnv* env); 56extern int register_android_os_Process(JNIEnv* env); 57extern int register_android_graphics_Bitmap(JNIEnv*); 58extern int register_android_graphics_BitmapFactory(JNIEnv*); 59extern int register_android_graphics_BitmapRegionDecoder(JNIEnv*); 60extern int register_android_graphics_ByteBufferStreamAdaptor(JNIEnv* env); 61extern int register_android_graphics_Camera(JNIEnv* env); 62extern int register_android_graphics_CreateJavaOutputStreamAdaptor(JNIEnv* env); 63extern int register_android_graphics_GraphicBuffer(JNIEnv* env); 64extern int register_android_graphics_Graphics(JNIEnv* env); 65extern int register_android_graphics_ImageDecoder(JNIEnv*); 66extern int register_android_graphics_drawable_AnimatedImageDrawable(JNIEnv*); 67extern int register_android_graphics_Interpolator(JNIEnv* env); 68extern int register_android_graphics_MaskFilter(JNIEnv* env); 69extern int register_android_graphics_Movie(JNIEnv* env); 70extern int register_android_graphics_NinePatch(JNIEnv*); 71extern int register_android_graphics_PathEffect(JNIEnv* env); 72extern int register_android_graphics_Shader(JNIEnv* env); 73extern int register_android_graphics_Typeface(JNIEnv* env); 74extern int register_android_graphics_YuvImage(JNIEnv* env); 75 76extern int register_com_google_android_gles_jni_EGLImpl(JNIEnv* env); 77extern int register_com_google_android_gles_jni_GLImpl(JNIEnv* env); 78extern int register_android_opengl_jni_EGL14(JNIEnv* env); 79extern int register_android_opengl_jni_EGLExt(JNIEnv* env); 80extern int register_android_opengl_jni_GLES10(JNIEnv* env); 81extern int register_android_opengl_jni_GLES10Ext(JNIEnv* env); 82extern int register_android_opengl_jni_GLES11(JNIEnv* env); 83extern int register_android_opengl_jni_GLES11Ext(JNIEnv* env); 84extern int register_android_opengl_jni_GLES20(JNIEnv* env); 85extern int register_android_opengl_jni_GLES30(JNIEnv* env); 86extern int register_android_opengl_jni_GLES31(JNIEnv* env); 87extern int register_android_opengl_jni_GLES31Ext(JNIEnv* env); 88extern int register_android_opengl_jni_GLES32(JNIEnv* env); 89 90extern int register_android_hardware_Camera(JNIEnv *env); 91extern int register_android_hardware_camera2_CameraMetadata(JNIEnv *env); 92extern int register_android_hardware_camera2_legacy_LegacyCameraDevice(JNIEnv *env); 93extern int register_android_hardware_camera2_legacy_PerfMeasurement(JNIEnv *env); 94extern int register_android_hardware_camera2_DngCreator(JNIEnv *env); 95extern int register_android_hardware_HardwareBuffer(JNIEnv *env); 96extern int register_android_hardware_SensorManager(JNIEnv *env); 97extern int register_android_hardware_SerialPort(JNIEnv *env); 98extern int register_android_hardware_SoundTrigger(JNIEnv *env); 99extern int register_android_hardware_UsbDevice(JNIEnv *env); 100extern int register_android_hardware_UsbDeviceConnection(JNIEnv *env); 101extern int register_android_hardware_UsbRequest(JNIEnv *env); 102extern int register_android_hardware_location_ActivityRecognitionHardware(JNIEnv* env); 103 104extern int register_android_media_AudioRecord(JNIEnv *env); 105extern int register_android_media_AudioSystem(JNIEnv *env); 106extern int register_android_media_AudioTrack(JNIEnv *env); 107extern int register_android_media_JetPlayer(JNIEnv *env); 108extern int register_android_media_ToneGenerator(JNIEnv *env); 109 110namespace android { 111 112/* 113 * JNI-based registration functions. Note these are properly contained in 114 * namespace android. 115 */ 116extern int register_android_app_admin_SecurityLog(JNIEnv* env); 117extern int register_android_content_AssetManager(JNIEnv* env); 118extern int register_android_util_EventLog(JNIEnv* env); 119extern int register_android_util_StatsLog(JNIEnv* env); 120extern int register_android_util_Log(JNIEnv* env); 121extern int register_android_util_MemoryIntArray(JNIEnv* env); 122extern int register_android_util_PathParser(JNIEnv* env); 123extern int register_android_content_StringBlock(JNIEnv* env); 124extern int register_android_content_XmlBlock(JNIEnv* env); 125extern int register_android_graphics_Canvas(JNIEnv* env); 126extern int register_android_graphics_CanvasProperty(JNIEnv* env); 127extern int register_android_graphics_ColorFilter(JNIEnv* env); 128extern int register_android_graphics_DrawFilter(JNIEnv* env); 129extern int register_android_graphics_FontFamily(JNIEnv* env); 130extern int register_android_graphics_Matrix(JNIEnv* env); 131extern int register_android_graphics_Paint(JNIEnv* env); 132extern int register_android_graphics_Path(JNIEnv* env); 133extern int register_android_graphics_PathMeasure(JNIEnv* env); 134extern int register_android_graphics_Picture(JNIEnv*); 135extern int register_android_graphics_Region(JNIEnv* env); 136extern int register_android_graphics_SurfaceTexture(JNIEnv* env); 137extern int register_android_graphics_drawable_AnimatedVectorDrawable(JNIEnv* env); 138extern int register_android_graphics_drawable_VectorDrawable(JNIEnv* env); 139extern int register_android_graphics_pdf_PdfDocument(JNIEnv* env); 140extern int register_android_graphics_pdf_PdfEditor(JNIEnv* env); 141extern int register_android_graphics_pdf_PdfRenderer(JNIEnv* env); 142extern int register_android_view_DisplayEventReceiver(JNIEnv* env); 143extern int register_android_view_DisplayListCanvas(JNIEnv* env); 144extern int register_android_view_HardwareLayer(JNIEnv* env); 145extern int register_android_view_RenderNode(JNIEnv* env); 146extern int register_android_view_RenderNodeAnimator(JNIEnv* env); 147extern int register_android_view_Surface(JNIEnv* env); 148extern int register_android_view_SurfaceControl(JNIEnv* env); 149extern int register_android_view_SurfaceSession(JNIEnv* env); 150extern int register_android_view_TextureView(JNIEnv* env); 151extern int register_android_view_ThreadedRenderer(JNIEnv* env); 152extern int register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper(JNIEnv *env); 153extern int register_android_database_CursorWindow(JNIEnv* env); 154extern int register_android_database_SQLiteConnection(JNIEnv* env); 155extern int register_android_database_SQLiteGlobal(JNIEnv* env); 156extern int register_android_database_SQLiteDebug(JNIEnv* env); 157extern int register_android_nio_utils(JNIEnv* env); 158extern int register_android_os_Debug(JNIEnv* env); 159extern int register_android_os_GraphicsEnvironment(JNIEnv* env); 160extern int register_android_os_HidlSupport(JNIEnv* env); 161extern int register_android_os_HwBinder(JNIEnv *env); 162extern int register_android_os_HwBlob(JNIEnv *env); 163extern int register_android_os_HwParcel(JNIEnv *env); 164extern int register_android_os_HwRemoteBinder(JNIEnv *env); 165extern int register_android_os_MessageQueue(JNIEnv* env); 166extern int register_android_os_Parcel(JNIEnv* env); 167extern int register_android_os_SELinux(JNIEnv* env); 168extern int register_android_os_VintfObject(JNIEnv *env); 169extern int register_android_os_VintfRuntimeInfo(JNIEnv *env); 170extern int register_android_os_SystemProperties(JNIEnv *env); 171extern int register_android_os_SystemClock(JNIEnv* env); 172extern int register_android_os_Trace(JNIEnv* env); 173extern int register_android_os_FileObserver(JNIEnv *env); 174extern int register_android_os_UEventObserver(JNIEnv* env); 175extern int register_android_os_MemoryFile(JNIEnv* env); 176extern int register_android_os_SharedMemory(JNIEnv* env); 177extern int register_android_net_LocalSocketImpl(JNIEnv* env); 178extern int register_android_net_NetworkUtils(JNIEnv* env); 179extern int register_android_text_AndroidCharacter(JNIEnv *env); 180extern int register_android_text_Hyphenator(JNIEnv *env); 181extern int register_android_text_MeasuredParagraph(JNIEnv* env); 182extern int register_android_text_StaticLayout(JNIEnv *env); 183extern int register_android_opengl_classes(JNIEnv *env); 184extern int register_android_ddm_DdmHandleNativeHeap(JNIEnv *env); 185extern int register_android_server_NetworkManagementSocketTagger(JNIEnv* env); 186extern int register_android_backup_BackupDataInput(JNIEnv *env); 187extern int register_android_backup_BackupDataOutput(JNIEnv *env); 188extern int register_android_backup_FileBackupHelperBase(JNIEnv *env); 189extern int register_android_backup_BackupHelperDispatcher(JNIEnv *env); 190extern int register_android_app_backup_FullBackup(JNIEnv *env); 191extern int register_android_app_Activity(JNIEnv *env); 192extern int register_android_app_ActivityThread(JNIEnv *env); 193extern int register_android_app_NativeActivity(JNIEnv *env); 194extern int register_android_media_RemoteDisplay(JNIEnv *env); 195extern int register_android_util_jar_StrictJarFile(JNIEnv* env); 196extern int register_android_view_InputChannel(JNIEnv* env); 197extern int register_android_view_InputDevice(JNIEnv* env); 198extern int register_android_view_InputEventReceiver(JNIEnv* env); 199extern int register_android_view_InputEventSender(JNIEnv* env); 200extern int register_android_view_InputQueue(JNIEnv* env); 201extern int register_android_view_KeyCharacterMap(JNIEnv *env); 202extern int register_android_view_KeyEvent(JNIEnv* env); 203extern int register_android_view_MotionEvent(JNIEnv* env); 204extern int register_android_view_PointerIcon(JNIEnv* env); 205extern int register_android_view_VelocityTracker(JNIEnv* env); 206extern int register_android_content_res_ObbScanner(JNIEnv* env); 207extern int register_android_content_res_Configuration(JNIEnv* env); 208extern int register_android_animation_PropertyValuesHolder(JNIEnv *env); 209extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env); 210extern int register_com_android_internal_net_NetworkStatsFactory(JNIEnv *env); 211extern int register_com_android_internal_os_ClassLoaderFactory(JNIEnv* env); 212extern int register_com_android_internal_os_FuseAppLoop(JNIEnv* env); 213extern int register_com_android_internal_os_Zygote(JNIEnv *env); 214extern int register_com_android_internal_os_ZygoteInit(JNIEnv *env); 215extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env); 216 217static AndroidRuntime* gCurRuntime = NULL; 218 219/* 220 * Code written in the Java Programming Language calls here from main(). 221 */ 222static void com_android_internal_os_RuntimeInit_nativeFinishInit(JNIEnv* env, jobject clazz) 223{ 224 gCurRuntime->onStarted(); 225} 226 227static void com_android_internal_os_ZygoteInit_nativeZygoteInit(JNIEnv* env, jobject clazz) 228{ 229 gCurRuntime->onZygoteInit(); 230} 231 232static void com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup(JNIEnv* env, 233 jobject clazz, jboolean exitWithoutCleanup) 234{ 235 gCurRuntime->setExitWithoutCleanup(exitWithoutCleanup); 236} 237 238/* 239 * JNI registration. 240 */ 241 242int register_com_android_internal_os_RuntimeInit(JNIEnv* env) 243{ 244 const JNINativeMethod methods[] = { 245 { "nativeFinishInit", "()V", 246 (void*) com_android_internal_os_RuntimeInit_nativeFinishInit }, 247 { "nativeSetExitWithoutCleanup", "(Z)V", 248 (void*) com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup }, 249 }; 250 return jniRegisterNativeMethods(env, "com/android/internal/os/RuntimeInit", 251 methods, NELEM(methods)); 252} 253 254int register_com_android_internal_os_ZygoteInit_nativeZygoteInit(JNIEnv* env) 255{ 256 const JNINativeMethod methods[] = { 257 { "nativeZygoteInit", "()V", 258 (void*) com_android_internal_os_ZygoteInit_nativeZygoteInit }, 259 }; 260 return jniRegisterNativeMethods(env, "com/android/internal/os/ZygoteInit", 261 methods, NELEM(methods)); 262} 263 264// ---------------------------------------------------------------------- 265 266/*static*/ JavaVM* AndroidRuntime::mJavaVM = NULL; 267 268AndroidRuntime::AndroidRuntime(char* argBlockStart, const size_t argBlockLength) : 269 mExitWithoutCleanup(false), 270 mArgBlockStart(argBlockStart), 271 mArgBlockLength(argBlockLength) 272{ 273 SkGraphics::Init(); 274 275 // Pre-allocate enough space to hold a fair number of options. 276 mOptions.setCapacity(20); 277 278 assert(gCurRuntime == NULL); // one per process 279 gCurRuntime = this; 280} 281 282AndroidRuntime::~AndroidRuntime() 283{ 284} 285 286/* 287 * Register native methods using JNI. 288 */ 289/*static*/ int AndroidRuntime::registerNativeMethods(JNIEnv* env, 290 const char* className, const JNINativeMethod* gMethods, int numMethods) 291{ 292 return jniRegisterNativeMethods(env, className, gMethods, numMethods); 293} 294 295void AndroidRuntime::setArgv0(const char* argv0, bool setProcName) { 296 if (setProcName) { 297 int len = strlen(argv0); 298 if (len < 15) { 299 pthread_setname_np(pthread_self(), argv0); 300 } else { 301 pthread_setname_np(pthread_self(), argv0 + len - 15); 302 } 303 } 304 memset(mArgBlockStart, 0, mArgBlockLength); 305 strlcpy(mArgBlockStart, argv0, mArgBlockLength); 306} 307 308status_t AndroidRuntime::callMain(const String8& className, jclass clazz, 309 const Vector<String8>& args) 310{ 311 JNIEnv* env; 312 jmethodID methodId; 313 314 ALOGD("Calling main entry %s", className.string()); 315 316 env = getJNIEnv(); 317 if (clazz == NULL || env == NULL) { 318 return UNKNOWN_ERROR; 319 } 320 321 methodId = env->GetStaticMethodID(clazz, "main", "([Ljava/lang/String;)V"); 322 if (methodId == NULL) { 323 ALOGE("ERROR: could not find method %s.main(String[])\n", className.string()); 324 return UNKNOWN_ERROR; 325 } 326 327 /* 328 * We want to call main() with a String array with our arguments in it. 329 * Create an array and populate it. 330 */ 331 jclass stringClass; 332 jobjectArray strArray; 333 334 const size_t numArgs = args.size(); 335 stringClass = env->FindClass("java/lang/String"); 336 strArray = env->NewObjectArray(numArgs, stringClass, NULL); 337 338 for (size_t i = 0; i < numArgs; i++) { 339 jstring argStr = env->NewStringUTF(args[i].string()); 340 env->SetObjectArrayElement(strArray, i, argStr); 341 } 342 343 env->CallStaticVoidMethod(clazz, methodId, strArray); 344 return NO_ERROR; 345} 346 347/* 348 * The VM calls this through the "exit" hook. 349 */ 350static void runtime_exit(int code) 351{ 352 gCurRuntime->exit(code); 353} 354 355/* 356 * The VM calls this through the "vfprintf" hook. 357 * 358 * We ignore "fp" and just write the results to the log file. 359 */ 360static void runtime_vfprintf(FILE* fp, const char* format, va_list ap) 361{ 362 LOG_PRI_VA(ANDROID_LOG_INFO, "vm-printf", format, ap); 363} 364 365/** 366 * The VM calls this when mutex contention debugging is enabled to 367 * determine whether or not the blocked thread was a "sensitive thread" 368 * for user responsiveness/smoothess. 369 * 370 * Our policy for this is whether or not we're tracing any StrictMode 371 * events on this thread (which we might've inherited via Binder calls 372 * into us) 373 */ 374static bool runtime_isSensitiveThread() { 375 IPCThreadState* state = IPCThreadState::selfOrNull(); 376 return state && state->getStrictModePolicy() != 0; 377} 378 379static int hasDir(const char* dir) 380{ 381 struct stat s; 382 int res = stat(dir, &s); 383 if (res == 0) { 384 return S_ISDIR(s.st_mode); 385 } 386 return 0; 387} 388 389static bool hasFile(const char* file) { 390 struct stat s; 391 int res = stat(file, &s); 392 if (res == 0) { 393 return S_ISREG(s.st_mode); 394 } 395 return false; 396} 397 398/* 399 * Read the persistent locale. Inspects the following system properties 400 * (in order) and returns the first non-empty property in the list : 401 * 402 * (1) persist.sys.locale 403 * (2) persist.sys.language/country/localevar (country and localevar are 404 * inspected iff. language is non-empty. 405 * (3) ro.product.locale 406 * (4) ro.product.locale.language/region 407 * 408 * Note that we need to inspect persist.sys.language/country/localevar to 409 * preserve language settings for devices that are upgrading from Lollipop 410 * to M. The same goes for ro.product.locale.language/region as well. 411 */ 412const std::string readLocale() 413{ 414 const std::string locale = GetProperty("persist.sys.locale", ""); 415 if (!locale.empty()) { 416 return locale; 417 } 418 419 const std::string language = GetProperty("persist.sys.language", ""); 420 if (!language.empty()) { 421 const std::string country = GetProperty("persist.sys.country", ""); 422 const std::string variant = GetProperty("persist.sys.localevar", ""); 423 424 std::string out = language; 425 if (!country.empty()) { 426 out = out + "-" + country; 427 } 428 429 if (!variant.empty()) { 430 out = out + "-" + variant; 431 } 432 433 return out; 434 } 435 436 const std::string productLocale = GetProperty("ro.product.locale", ""); 437 if (!productLocale.empty()) { 438 return productLocale; 439 } 440 441 // If persist.sys.locale and ro.product.locale are missing, 442 // construct a locale value from the individual locale components. 443 const std::string productLanguage = GetProperty("ro.product.locale.language", "en"); 444 const std::string productRegion = GetProperty("ro.product.locale.region", "US"); 445 446 return productLanguage + "-" + productRegion; 447} 448 449void AndroidRuntime::addOption(const char* optionString, void* extraInfo) 450{ 451 JavaVMOption opt; 452 opt.optionString = optionString; 453 opt.extraInfo = extraInfo; 454 mOptions.add(opt); 455} 456 457/* 458 * Parse a property containing space-separated options that should be 459 * passed directly to the VM, e.g. "-Xmx32m -verbose:gc -Xregenmap". 460 * 461 * This will cut up "extraOptsBuf" as we chop it into individual options. 462 * 463 * If "quotingArg" is non-null, it is passed before each extra option in mOptions. 464 * 465 * Adds the strings, if any, to mOptions. 466 */ 467void AndroidRuntime::parseExtraOpts(char* extraOptsBuf, const char* quotingArg) 468{ 469 char* start = extraOptsBuf; 470 char* end = NULL; 471 while (*start != '\0') { 472 while (*start == ' ') /* skip leading whitespace */ 473 start++; 474 if (*start == '\0') /* was trailing ws, bail */ 475 break; 476 477 end = start+1; 478 while (*end != ' ' && *end != '\0') /* find end of token */ 479 end++; 480 if (*end == ' ') 481 *end++ = '\0'; /* mark end, advance to indicate more */ 482 483 if (quotingArg != NULL) { 484 addOption(quotingArg); 485 } 486 addOption(start); 487 start = end; 488 } 489} 490 491/* 492 * Reads a "property" into "buffer" with a default of "defaultArg". If 493 * the property is non-empty, it is treated as a runtime option such 494 * as "-Xmx32m". 495 * 496 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx". 497 * 498 * If an argument is found, it is added to mOptions. 499 * 500 * If an option is found, it is added to mOptions and true is 501 * returned. Otherwise false is returned. 502 */ 503bool AndroidRuntime::parseRuntimeOption(const char* property, 504 char* buffer, 505 const char* runtimeArg, 506 const char* defaultArg) 507{ 508 strcpy(buffer, runtimeArg); 509 size_t runtimeArgLen = strlen(runtimeArg); 510 property_get(property, buffer+runtimeArgLen, defaultArg); 511 if (buffer[runtimeArgLen] == '\0') { 512 return false; 513 } 514 addOption(buffer); 515 return true; 516} 517 518/* 519 * Reads a "property" into "buffer". If the property is non-empty, it 520 * is treated as a dex2oat compiler option that should be 521 * passed as a quoted option, e.g. "-Ximage-compiler-option --compiler-filter=assume-verified". 522 * 523 * The "compilerArg" is a prefix for the option such as "--compiler-filter=". 524 * 525 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option". 526 * 527 * If an option is found, it is added to mOptions and true is 528 * returned. Otherwise false is returned. 529 */ 530bool AndroidRuntime::parseCompilerOption(const char* property, 531 char* buffer, 532 const char* compilerArg, 533 const char* quotingArg) 534{ 535 strcpy(buffer, compilerArg); 536 size_t compilerArgLen = strlen(compilerArg); 537 property_get(property, buffer+compilerArgLen, ""); 538 if (buffer[compilerArgLen] == '\0') { 539 return false; 540 } 541 addOption(quotingArg); 542 addOption(buffer); 543 return true; 544} 545 546/* 547 * Reads a "property" into "buffer". If the property is non-empty, it 548 * is treated as a dex2oat compiler runtime option that should be 549 * passed as a quoted option, e.g. "-Ximage-compiler-option 550 * --runtime-arg -Ximage-compiler-option -Xmx32m". 551 * 552 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx". 553 * 554 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option". 555 * 556 * If an option is found, it is added to mOptions and true is 557 * returned. Otherwise false is returned. 558 */ 559bool AndroidRuntime::parseCompilerRuntimeOption(const char* property, 560 char* buffer, 561 const char* runtimeArg, 562 const char* quotingArg) 563{ 564 strcpy(buffer, runtimeArg); 565 size_t runtimeArgLen = strlen(runtimeArg); 566 property_get(property, buffer+runtimeArgLen, ""); 567 if (buffer[runtimeArgLen] == '\0') { 568 return false; 569 } 570 addOption(quotingArg); 571 addOption("--runtime-arg"); 572 addOption(quotingArg); 573 addOption(buffer); 574 return true; 575} 576 577/* 578 * Start the Dalvik Virtual Machine. 579 * 580 * Various arguments, most determined by system properties, are passed in. 581 * The "mOptions" vector is updated. 582 * 583 * CAUTION: when adding options in here, be careful not to put the 584 * char buffer inside a nested scope. Adding the buffer to the 585 * options using mOptions.add() does not copy the buffer, so if the 586 * buffer goes out of scope the option may be overwritten. It's best 587 * to put the buffer at the top of the function so that it is more 588 * unlikely that someone will surround it in a scope at a later time 589 * and thus introduce a bug. 590 * 591 * Returns 0 on success. 592 */ 593int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv, bool zygote) 594{ 595 JavaVMInitArgs initArgs; 596 char propBuf[PROPERTY_VALUE_MAX]; 597 char stackTraceFileBuf[sizeof("-Xstacktracefile:")-1 + PROPERTY_VALUE_MAX]; 598 char jniOptsBuf[sizeof("-Xjniopts:")-1 + PROPERTY_VALUE_MAX]; 599 char heapstartsizeOptsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX]; 600 char heapsizeOptsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX]; 601 char heapgrowthlimitOptsBuf[sizeof("-XX:HeapGrowthLimit=")-1 + PROPERTY_VALUE_MAX]; 602 char heapminfreeOptsBuf[sizeof("-XX:HeapMinFree=")-1 + PROPERTY_VALUE_MAX]; 603 char heapmaxfreeOptsBuf[sizeof("-XX:HeapMaxFree=")-1 + PROPERTY_VALUE_MAX]; 604 char usejitOptsBuf[sizeof("-Xusejit:")-1 + PROPERTY_VALUE_MAX]; 605 char jitmaxsizeOptsBuf[sizeof("-Xjitmaxsize:")-1 + PROPERTY_VALUE_MAX]; 606 char jitinitialsizeOptsBuf[sizeof("-Xjitinitialsize:")-1 + PROPERTY_VALUE_MAX]; 607 char jitthresholdOptsBuf[sizeof("-Xjitthreshold:")-1 + PROPERTY_VALUE_MAX]; 608 char useJitProfilesOptsBuf[sizeof("-Xjitsaveprofilinginfo:")-1 + PROPERTY_VALUE_MAX]; 609 char jitprithreadweightOptBuf[sizeof("-Xjitprithreadweight:")-1 + PROPERTY_VALUE_MAX]; 610 char jittransitionweightOptBuf[sizeof("-Xjittransitionweight:")-1 + PROPERTY_VALUE_MAX]; 611 char hotstartupsamplesOptsBuf[sizeof("-Xps-hot-startup-method-samples:")-1 + PROPERTY_VALUE_MAX]; 612 char madviseRandomOptsBuf[sizeof("-XX:MadviseRandomAccess:")-1 + PROPERTY_VALUE_MAX]; 613 char gctypeOptsBuf[sizeof("-Xgc:")-1 + PROPERTY_VALUE_MAX]; 614 char backgroundgcOptsBuf[sizeof("-XX:BackgroundGC=")-1 + PROPERTY_VALUE_MAX]; 615 char heaptargetutilizationOptsBuf[sizeof("-XX:HeapTargetUtilization=")-1 + PROPERTY_VALUE_MAX]; 616 char foregroundHeapGrowthMultiplierOptsBuf[ 617 sizeof("-XX:ForegroundHeapGrowthMultiplier=")-1 + PROPERTY_VALUE_MAX]; 618 char cachePruneBuf[sizeof("-Xzygote-max-boot-retry=")-1 + PROPERTY_VALUE_MAX]; 619 char dex2oatXmsImageFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX]; 620 char dex2oatXmxImageFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX]; 621 char dex2oatXmsFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX]; 622 char dex2oatXmxFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX]; 623 char dex2oatCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX]; 624 char dex2oatImageCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX]; 625 char dex2oatThreadsBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX]; 626 char dex2oatThreadsImageBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX]; 627 char dex2oat_isa_variant_key[PROPERTY_KEY_MAX]; 628 char dex2oat_isa_variant[sizeof("--instruction-set-variant=") -1 + PROPERTY_VALUE_MAX]; 629 char dex2oat_isa_features_key[PROPERTY_KEY_MAX]; 630 char dex2oat_isa_features[sizeof("--instruction-set-features=") -1 + PROPERTY_VALUE_MAX]; 631 char dex2oatFlagsBuf[PROPERTY_VALUE_MAX]; 632 char dex2oatImageFlagsBuf[PROPERTY_VALUE_MAX]; 633 char extraOptsBuf[PROPERTY_VALUE_MAX]; 634 char voldDecryptBuf[PROPERTY_VALUE_MAX]; 635 enum { 636 kEMDefault, 637 kEMIntPortable, 638 kEMIntFast, 639 kEMJitCompiler, 640 } executionMode = kEMDefault; 641 char localeOption[sizeof("-Duser.locale=") + PROPERTY_VALUE_MAX]; 642 char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:")-1 + PROPERTY_VALUE_MAX]; 643 char nativeBridgeLibrary[sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX]; 644 char cpuAbiListBuf[sizeof("--cpu-abilist=") + PROPERTY_VALUE_MAX]; 645 char methodTraceFileBuf[sizeof("-Xmethod-trace-file:") + PROPERTY_VALUE_MAX]; 646 char methodTraceFileSizeBuf[sizeof("-Xmethod-trace-file-size:") + PROPERTY_VALUE_MAX]; 647 std::string fingerprintBuf; 648 char jdwpProviderBuf[sizeof("-XjdwpProvider:") - 1 + PROPERTY_VALUE_MAX]; 649 650 bool checkJni = false; 651 property_get("dalvik.vm.checkjni", propBuf, ""); 652 if (strcmp(propBuf, "true") == 0) { 653 checkJni = true; 654 } else if (strcmp(propBuf, "false") != 0) { 655 /* property is neither true nor false; fall back on kernel parameter */ 656 property_get("ro.kernel.android.checkjni", propBuf, ""); 657 if (propBuf[0] == '1') { 658 checkJni = true; 659 } 660 } 661 ALOGV("CheckJNI is %s\n", checkJni ? "ON" : "OFF"); 662 if (checkJni) { 663 /* extended JNI checking */ 664 addOption("-Xcheck:jni"); 665 666 /* with -Xcheck:jni, this provides a JNI function call trace */ 667 //addOption("-verbose:jni"); 668 } 669 670 property_get("dalvik.vm.execution-mode", propBuf, ""); 671 if (strcmp(propBuf, "int:portable") == 0) { 672 executionMode = kEMIntPortable; 673 } else if (strcmp(propBuf, "int:fast") == 0) { 674 executionMode = kEMIntFast; 675 } else if (strcmp(propBuf, "int:jit") == 0) { 676 executionMode = kEMJitCompiler; 677 } 678 679 // If dalvik.vm.stack-trace-dir is set, it enables the "new" stack trace 680 // dump scheme and a new file is created for each stack dump. If it isn't set, 681 // the old scheme is enabled. 682 property_get("dalvik.vm.stack-trace-dir", propBuf, ""); 683 if (strlen(propBuf) > 0) { 684 addOption("-Xusetombstonedtraces"); 685 } else { 686 parseRuntimeOption("dalvik.vm.stack-trace-file", stackTraceFileBuf, "-Xstacktracefile:"); 687 } 688 689 strcpy(jniOptsBuf, "-Xjniopts:"); 690 if (parseRuntimeOption("dalvik.vm.jniopts", jniOptsBuf, "-Xjniopts:")) { 691 ALOGI("JNI options: '%s'\n", jniOptsBuf); 692 } 693 694 /* route exit() to our handler */ 695 addOption("exit", (void*) runtime_exit); 696 697 /* route fprintf() to our handler */ 698 addOption("vfprintf", (void*) runtime_vfprintf); 699 700 /* register the framework-specific "is sensitive thread" hook */ 701 addOption("sensitiveThread", (void*) runtime_isSensitiveThread); 702 703 /* enable verbose; standard options are { jni, gc, class } */ 704 //addOption("-verbose:jni"); 705 addOption("-verbose:gc"); 706 //addOption("-verbose:class"); 707 708 /* 709 * The default starting and maximum size of the heap. Larger 710 * values should be specified in a product property override. 711 */ 712 parseRuntimeOption("dalvik.vm.heapstartsize", heapstartsizeOptsBuf, "-Xms", "4m"); 713 parseRuntimeOption("dalvik.vm.heapsize", heapsizeOptsBuf, "-Xmx", "16m"); 714 715 parseRuntimeOption("dalvik.vm.heapgrowthlimit", heapgrowthlimitOptsBuf, "-XX:HeapGrowthLimit="); 716 parseRuntimeOption("dalvik.vm.heapminfree", heapminfreeOptsBuf, "-XX:HeapMinFree="); 717 parseRuntimeOption("dalvik.vm.heapmaxfree", heapmaxfreeOptsBuf, "-XX:HeapMaxFree="); 718 parseRuntimeOption("dalvik.vm.heaptargetutilization", 719 heaptargetutilizationOptsBuf, 720 "-XX:HeapTargetUtilization="); 721 722 /* Foreground heap growth multiplier option */ 723 parseRuntimeOption("dalvik.vm.foreground-heap-growth-multiplier", 724 foregroundHeapGrowthMultiplierOptsBuf, 725 "-XX:ForegroundHeapGrowthMultiplier="); 726 727 /* 728 * JIT related options. 729 */ 730 parseRuntimeOption("dalvik.vm.usejit", usejitOptsBuf, "-Xusejit:"); 731 parseRuntimeOption("dalvik.vm.jitmaxsize", jitmaxsizeOptsBuf, "-Xjitmaxsize:"); 732 parseRuntimeOption("dalvik.vm.jitinitialsize", jitinitialsizeOptsBuf, "-Xjitinitialsize:"); 733 parseRuntimeOption("dalvik.vm.jitthreshold", jitthresholdOptsBuf, "-Xjitthreshold:"); 734 property_get("dalvik.vm.usejitprofiles", useJitProfilesOptsBuf, ""); 735 if (strcmp(useJitProfilesOptsBuf, "true") == 0) { 736 addOption("-Xjitsaveprofilinginfo"); 737 } 738 739 parseRuntimeOption("dalvik.vm.jitprithreadweight", 740 jitprithreadweightOptBuf, 741 "-Xjitprithreadweight:"); 742 743 parseRuntimeOption("dalvik.vm.jittransitionweight", 744 jittransitionweightOptBuf, 745 "-Xjittransitionweight:"); 746 747 /* 748 * Madvise related options. 749 */ 750 parseRuntimeOption("dalvik.vm.madvise-random", madviseRandomOptsBuf, "-XX:MadviseRandomAccess:"); 751 752 /* 753 * Profile related options. 754 */ 755 parseRuntimeOption("dalvik.vm.hot-startup-method-samples", hotstartupsamplesOptsBuf, 756 "-Xps-hot-startup-method-samples:"); 757 758 property_get("ro.config.low_ram", propBuf, ""); 759 if (strcmp(propBuf, "true") == 0) { 760 addOption("-XX:LowMemoryMode"); 761 } 762 763 parseRuntimeOption("dalvik.vm.gctype", gctypeOptsBuf, "-Xgc:"); 764 parseRuntimeOption("dalvik.vm.backgroundgctype", backgroundgcOptsBuf, "-XX:BackgroundGC="); 765 766 /* 767 * Enable debugging only for apps forked from zygote. 768 * Set suspend=y to pause during VM init and use android ADB transport. 769 */ 770 if (zygote) { 771 addOption("-XjdwpOptions:suspend=n,server=y"); 772 } 773 774 // Set the JDWP provider. By default let the runtime choose. 775 parseRuntimeOption("dalvik.vm.jdwp-provider", 776 jdwpProviderBuf, 777 "-XjdwpProvider:", 778 "default"); 779 780 parseRuntimeOption("dalvik.vm.lockprof.threshold", 781 lockProfThresholdBuf, 782 "-Xlockprofthreshold:"); 783 784 if (executionMode == kEMIntPortable) { 785 addOption("-Xint:portable"); 786 } else if (executionMode == kEMIntFast) { 787 addOption("-Xint:fast"); 788 } else if (executionMode == kEMJitCompiler) { 789 addOption("-Xint:jit"); 790 } 791 792 // If we are booting without the real /data, don't spend time compiling. 793 property_get("vold.decrypt", voldDecryptBuf, ""); 794 bool skip_compilation = ((strcmp(voldDecryptBuf, "trigger_restart_min_framework") == 0) || 795 (strcmp(voldDecryptBuf, "1") == 0)); 796 797 // Extra options for boot.art/boot.oat image generation. 798 parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xms", dex2oatXmsImageFlagsBuf, 799 "-Xms", "-Ximage-compiler-option"); 800 parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xmx", dex2oatXmxImageFlagsBuf, 801 "-Xmx", "-Ximage-compiler-option"); 802 if (skip_compilation) { 803 addOption("-Ximage-compiler-option"); 804 addOption("--compiler-filter=assume-verified"); 805 } else { 806 parseCompilerOption("dalvik.vm.image-dex2oat-filter", dex2oatImageCompilerFilterBuf, 807 "--compiler-filter=", "-Ximage-compiler-option"); 808 } 809 810 // If there is a boot profile, it takes precedence over the image and preloaded classes. 811 if (hasFile("/system/etc/boot-image.prof")) { 812 addOption("-Ximage-compiler-option"); 813 addOption("--profile-file=/system/etc/boot-image.prof"); 814 addOption("-Ximage-compiler-option"); 815 addOption("--compiler-filter=speed-profile"); 816 } else { 817 // Make sure there is a preloaded-classes file. 818 if (!hasFile("/system/etc/preloaded-classes")) { 819 ALOGE("Missing preloaded-classes file, /system/etc/preloaded-classes not found: %s\n", 820 strerror(errno)); 821 return -1; 822 } 823 addOption("-Ximage-compiler-option"); 824 addOption("--image-classes=/system/etc/preloaded-classes"); 825 826 // If there is a compiled-classes file, push it. 827 if (hasFile("/system/etc/compiled-classes")) { 828 addOption("-Ximage-compiler-option"); 829 addOption("--compiled-classes=/system/etc/compiled-classes"); 830 } 831 832 // If there is a dirty-image-objects file, push it. 833 if (hasFile("/system/etc/dirty-image-objects")) { 834 addOption("-Ximage-compiler-option"); 835 addOption("--dirty-image-objects=/system/etc/dirty-image-objects"); 836 } 837 } 838 839 property_get("dalvik.vm.image-dex2oat-flags", dex2oatImageFlagsBuf, ""); 840 parseExtraOpts(dex2oatImageFlagsBuf, "-Ximage-compiler-option"); 841 842 // Extra options for DexClassLoader. 843 parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xms", dex2oatXmsFlagsBuf, 844 "-Xms", "-Xcompiler-option"); 845 parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xmx", dex2oatXmxFlagsBuf, 846 "-Xmx", "-Xcompiler-option"); 847 if (skip_compilation) { 848 addOption("-Xcompiler-option"); 849 addOption("--compiler-filter=assume-verified"); 850 851 // We skip compilation when a minimal runtime is brought up for decryption. In that case 852 // /data is temporarily backed by a tmpfs, which is usually small. 853 // If the system image contains prebuilts, they will be relocated into the tmpfs. In this 854 // specific situation it is acceptable to *not* relocate and run out of the prebuilts 855 // directly instead. 856 addOption("--runtime-arg"); 857 addOption("-Xnorelocate"); 858 } else { 859 parseCompilerOption("dalvik.vm.dex2oat-filter", dex2oatCompilerFilterBuf, 860 "--compiler-filter=", "-Xcompiler-option"); 861 } 862 parseCompilerOption("dalvik.vm.dex2oat-threads", dex2oatThreadsBuf, "-j", "-Xcompiler-option"); 863 parseCompilerOption("dalvik.vm.image-dex2oat-threads", dex2oatThreadsImageBuf, "-j", 864 "-Ximage-compiler-option"); 865 866 // The runtime will compile a boot image, when necessary, not using installd. Thus, we need to 867 // pass the instruction-set-features/variant as an image-compiler-option. 868 // TODO: Find a better way for the instruction-set. 869#if defined(__arm__) 870 constexpr const char* instruction_set = "arm"; 871#elif defined(__aarch64__) 872 constexpr const char* instruction_set = "arm64"; 873#elif defined(__mips__) && !defined(__LP64__) 874 constexpr const char* instruction_set = "mips"; 875#elif defined(__mips__) && defined(__LP64__) 876 constexpr const char* instruction_set = "mips64"; 877#elif defined(__i386__) 878 constexpr const char* instruction_set = "x86"; 879#elif defined(__x86_64__) 880 constexpr const char* instruction_set = "x86_64"; 881#else 882 constexpr const char* instruction_set = "unknown"; 883#endif 884 // Note: it is OK to reuse the buffer, as the values are exactly the same between 885 // * compiler-option, used for runtime compilation (DexClassLoader) 886 // * image-compiler-option, used for boot-image compilation on device 887 888 // Copy the variant. 889 sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set); 890 parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant, 891 "--instruction-set-variant=", "-Ximage-compiler-option"); 892 parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant, 893 "--instruction-set-variant=", "-Xcompiler-option"); 894 // Copy the features. 895 sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set); 896 parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features, 897 "--instruction-set-features=", "-Ximage-compiler-option"); 898 parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features, 899 "--instruction-set-features=", "-Xcompiler-option"); 900 901 902 property_get("dalvik.vm.dex2oat-flags", dex2oatFlagsBuf, ""); 903 parseExtraOpts(dex2oatFlagsBuf, "-Xcompiler-option"); 904 905 /* extra options; parse this late so it overrides others */ 906 property_get("dalvik.vm.extra-opts", extraOptsBuf, ""); 907 parseExtraOpts(extraOptsBuf, NULL); 908 909 /* Set the properties for locale */ 910 { 911 strcpy(localeOption, "-Duser.locale="); 912 const std::string locale = readLocale(); 913 strncat(localeOption, locale.c_str(), PROPERTY_VALUE_MAX); 914 addOption(localeOption); 915 } 916 917 // Trace files are stored in /data/misc/trace which is writable only in debug mode. 918 property_get("ro.debuggable", propBuf, "0"); 919 if (strcmp(propBuf, "1") == 0) { 920 property_get("dalvik.vm.method-trace", propBuf, "false"); 921 if (strcmp(propBuf, "true") == 0) { 922 addOption("-Xmethod-trace"); 923 parseRuntimeOption("dalvik.vm.method-trace-file", 924 methodTraceFileBuf, 925 "-Xmethod-trace-file:"); 926 parseRuntimeOption("dalvik.vm.method-trace-file-siz", 927 methodTraceFileSizeBuf, 928 "-Xmethod-trace-file-size:"); 929 property_get("dalvik.vm.method-trace-stream", propBuf, "false"); 930 if (strcmp(propBuf, "true") == 0) { 931 addOption("-Xmethod-trace-stream"); 932 } 933 } 934 } 935 936 // Native bridge library. "0" means that native bridge is disabled. 937 property_get("ro.dalvik.vm.native.bridge", propBuf, ""); 938 if (propBuf[0] == '\0') { 939 ALOGW("ro.dalvik.vm.native.bridge is not expected to be empty"); 940 } else if (strcmp(propBuf, "0") != 0) { 941 snprintf(nativeBridgeLibrary, sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX, 942 "-XX:NativeBridge=%s", propBuf); 943 addOption(nativeBridgeLibrary); 944 } 945 946#if defined(__LP64__) 947 const char* cpu_abilist_property_name = "ro.product.cpu.abilist64"; 948#else 949 const char* cpu_abilist_property_name = "ro.product.cpu.abilist32"; 950#endif // defined(__LP64__) 951 property_get(cpu_abilist_property_name, propBuf, ""); 952 if (propBuf[0] == '\0') { 953 ALOGE("%s is not expected to be empty", cpu_abilist_property_name); 954 return -1; 955 } 956 snprintf(cpuAbiListBuf, sizeof(cpuAbiListBuf), "--cpu-abilist=%s", propBuf); 957 addOption(cpuAbiListBuf); 958 959 // Dalvik-cache pruning counter. 960 parseRuntimeOption("dalvik.vm.zygote.max-boot-retry", cachePruneBuf, 961 "-Xzygote-max-boot-retry="); 962 963 /* 964 * When running with debug.generate-debug-info, add --generate-debug-info to 965 * the compiler options so that the boot image, if it is compiled on device, 966 * will include native debugging information. 967 */ 968 property_get("debug.generate-debug-info", propBuf, ""); 969 if (strcmp(propBuf, "true") == 0) { 970 addOption("-Xcompiler-option"); 971 addOption("--generate-debug-info"); 972 addOption("-Ximage-compiler-option"); 973 addOption("--generate-debug-info"); 974 } 975 976 /* 977 * Retrieve the build fingerprint and provide it to the runtime. That way, ANR dumps will 978 * contain the fingerprint and can be parsed. 979 * Fingerprints are potentially longer than PROPERTY_VALUE_MAX, so parseRuntimeOption() cannot 980 * be used here. 981 * Do not ever re-assign fingerprintBuf as its c_str() value is stored in mOptions. 982 */ 983 std::string fingerprint = GetProperty("ro.build.fingerprint", ""); 984 if (!fingerprint.empty()) { 985 fingerprintBuf = "-Xfingerprint:" + fingerprint; 986 addOption(fingerprintBuf.c_str()); 987 } 988 989 initArgs.version = JNI_VERSION_1_4; 990 initArgs.options = mOptions.editArray(); 991 initArgs.nOptions = mOptions.size(); 992 initArgs.ignoreUnrecognized = JNI_FALSE; 993 994 /* 995 * Initialize the VM. 996 * 997 * The JavaVM* is essentially per-process, and the JNIEnv* is per-thread. 998 * If this call succeeds, the VM is ready, and we can start issuing 999 * JNI calls. 1000 */ 1001 if (JNI_CreateJavaVM(pJavaVM, pEnv, &initArgs) < 0) { 1002 ALOGE("JNI_CreateJavaVM failed\n"); 1003 return -1; 1004 } 1005 1006 return 0; 1007} 1008 1009char* AndroidRuntime::toSlashClassName(const char* className) 1010{ 1011 char* result = strdup(className); 1012 for (char* cp = result; *cp != '\0'; cp++) { 1013 if (*cp == '.') { 1014 *cp = '/'; 1015 } 1016 } 1017 return result; 1018} 1019 1020/** Create a Java string from an ASCII or Latin-1 string */ 1021jstring AndroidRuntime::NewStringLatin1(JNIEnv* env, const char* bytes) { 1022 if (!bytes) return NULL; 1023 int length = strlen(bytes); 1024 jchar* buffer = (jchar *)alloca(length * sizeof(jchar)); 1025 if (!buffer) return NULL; 1026 jchar* chp = buffer; 1027 for (int i = 0; i < length; i++) { 1028 *chp++ = *bytes++; 1029 } 1030 return env->NewString(buffer, length); 1031} 1032 1033 1034/* 1035 * Start the Android runtime. This involves starting the virtual machine 1036 * and calling the "static void main(String[] args)" method in the class 1037 * named by "className". 1038 * 1039 * Passes the main function two arguments, the class name and the specified 1040 * options string. 1041 */ 1042void AndroidRuntime::start(const char* className, const Vector<String8>& options, bool zygote) 1043{ 1044 ALOGD(">>>>>> START %s uid %d <<<<<<\n", 1045 className != NULL ? className : "(unknown)", getuid()); 1046 1047 static const String8 startSystemServer("start-system-server"); 1048 1049 /* 1050 * 'startSystemServer == true' means runtime is obsolete and not run from 1051 * init.rc anymore, so we print out the boot start event here. 1052 */ 1053 for (size_t i = 0; i < options.size(); ++i) { 1054 if (options[i] == startSystemServer) { 1055 /* track our progress through the boot sequence */ 1056 const int LOG_BOOT_PROGRESS_START = 3000; 1057 LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START, ns2ms(systemTime(SYSTEM_TIME_MONOTONIC))); 1058 } 1059 } 1060 1061 const char* rootDir = getenv("ANDROID_ROOT"); 1062 if (rootDir == NULL) { 1063 rootDir = "/system"; 1064 if (!hasDir("/system")) { 1065 LOG_FATAL("No root directory specified, and /android does not exist."); 1066 return; 1067 } 1068 setenv("ANDROID_ROOT", rootDir, 1); 1069 } 1070 1071 //const char* kernelHack = getenv("LD_ASSUME_KERNEL"); 1072 //ALOGD("Found LD_ASSUME_KERNEL='%s'\n", kernelHack); 1073 1074 /* start the virtual machine */ 1075 JniInvocation jni_invocation; 1076 jni_invocation.Init(NULL); 1077 JNIEnv* env; 1078 if (startVm(&mJavaVM, &env, zygote) != 0) { 1079 return; 1080 } 1081 onVmCreated(env); 1082 1083 /* 1084 * Register android functions. 1085 */ 1086 if (startReg(env) < 0) { 1087 ALOGE("Unable to register all android natives\n"); 1088 return; 1089 } 1090 1091 /* 1092 * We want to call main() with a String array with arguments in it. 1093 * At present we have two arguments, the class name and an option string. 1094 * Create an array to hold them. 1095 */ 1096 jclass stringClass; 1097 jobjectArray strArray; 1098 jstring classNameStr; 1099 1100 stringClass = env->FindClass("java/lang/String"); 1101 assert(stringClass != NULL); 1102 strArray = env->NewObjectArray(options.size() + 1, stringClass, NULL); 1103 assert(strArray != NULL); 1104 classNameStr = env->NewStringUTF(className); 1105 assert(classNameStr != NULL); 1106 env->SetObjectArrayElement(strArray, 0, classNameStr); 1107 1108 for (size_t i = 0; i < options.size(); ++i) { 1109 jstring optionsStr = env->NewStringUTF(options.itemAt(i).string()); 1110 assert(optionsStr != NULL); 1111 env->SetObjectArrayElement(strArray, i + 1, optionsStr); 1112 } 1113 1114 /* 1115 * Start VM. This thread becomes the main thread of the VM, and will 1116 * not return until the VM exits. 1117 */ 1118 char* slashClassName = toSlashClassName(className != NULL ? className : ""); 1119 jclass startClass = env->FindClass(slashClassName); 1120 if (startClass == NULL) { 1121 ALOGE("JavaVM unable to locate class '%s'\n", slashClassName); 1122 /* keep going */ 1123 } else { 1124 jmethodID startMeth = env->GetStaticMethodID(startClass, "main", 1125 "([Ljava/lang/String;)V"); 1126 if (startMeth == NULL) { 1127 ALOGE("JavaVM unable to find main() in '%s'\n", className); 1128 /* keep going */ 1129 } else { 1130 env->CallStaticVoidMethod(startClass, startMeth, strArray); 1131 1132#if 0 1133 if (env->ExceptionCheck()) 1134 threadExitUncaughtException(env); 1135#endif 1136 } 1137 } 1138 free(slashClassName); 1139 1140 ALOGD("Shutting down VM\n"); 1141 if (mJavaVM->DetachCurrentThread() != JNI_OK) 1142 ALOGW("Warning: unable to detach main thread\n"); 1143 if (mJavaVM->DestroyJavaVM() != 0) 1144 ALOGW("Warning: VM did not shut down cleanly\n"); 1145} 1146 1147void AndroidRuntime::exit(int code) 1148{ 1149 if (mExitWithoutCleanup) { 1150 ALOGI("VM exiting with result code %d, cleanup skipped.", code); 1151 ::_exit(code); 1152 } else { 1153 ALOGI("VM exiting with result code %d.", code); 1154 onExit(code); 1155 ::exit(code); 1156 } 1157} 1158 1159void AndroidRuntime::onVmCreated(JNIEnv* env) 1160{ 1161 // If AndroidRuntime had anything to do here, we'd have done it in 'start'. 1162} 1163 1164/* 1165 * Get the JNIEnv pointer for this thread. 1166 * 1167 * Returns NULL if the slot wasn't allocated or populated. 1168 */ 1169/*static*/ JNIEnv* AndroidRuntime::getJNIEnv() 1170{ 1171 JNIEnv* env; 1172 JavaVM* vm = AndroidRuntime::getJavaVM(); 1173 assert(vm != NULL); 1174 1175 if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) 1176 return NULL; 1177 return env; 1178} 1179 1180/* 1181 * Makes the current thread visible to the VM. 1182 * 1183 * The JNIEnv pointer returned is only valid for the current thread, and 1184 * thus must be tucked into thread-local storage. 1185 */ 1186static int javaAttachThread(const char* threadName, JNIEnv** pEnv) 1187{ 1188 JavaVMAttachArgs args; 1189 JavaVM* vm; 1190 jint result; 1191 1192 vm = AndroidRuntime::getJavaVM(); 1193 assert(vm != NULL); 1194 1195 args.version = JNI_VERSION_1_4; 1196 args.name = (char*) threadName; 1197 args.group = NULL; 1198 1199 result = vm->AttachCurrentThread(pEnv, (void*) &args); 1200 if (result != JNI_OK) 1201 ALOGI("NOTE: attach of thread '%s' failed\n", threadName); 1202 1203 return result; 1204} 1205 1206/* 1207 * Detach the current thread from the set visible to the VM. 1208 */ 1209static int javaDetachThread(void) 1210{ 1211 JavaVM* vm; 1212 jint result; 1213 1214 vm = AndroidRuntime::getJavaVM(); 1215 assert(vm != NULL); 1216 1217 result = vm->DetachCurrentThread(); 1218 if (result != JNI_OK) 1219 ALOGE("ERROR: thread detach failed\n"); 1220 return result; 1221} 1222 1223/* 1224 * When starting a native thread that will be visible from the VM, we 1225 * bounce through this to get the right attach/detach action. 1226 * Note that this function calls free(args) 1227 */ 1228/*static*/ int AndroidRuntime::javaThreadShell(void* args) { 1229 void* start = ((void**)args)[0]; 1230 void* userData = ((void **)args)[1]; 1231 char* name = (char*) ((void **)args)[2]; // we own this storage 1232 free(args); 1233 JNIEnv* env; 1234 int result; 1235 1236 /* hook us into the VM */ 1237 if (javaAttachThread(name, &env) != JNI_OK) 1238 return -1; 1239 1240 /* start the thread running */ 1241 result = (*(android_thread_func_t)start)(userData); 1242 1243 /* unhook us */ 1244 javaDetachThread(); 1245 free(name); 1246 1247 return result; 1248} 1249 1250/* 1251 * This is invoked from androidCreateThreadEtc() via the callback 1252 * set with androidSetCreateThreadFunc(). 1253 * 1254 * We need to create the new thread in such a way that it gets hooked 1255 * into the VM before it really starts executing. 1256 */ 1257/*static*/ int AndroidRuntime::javaCreateThreadEtc( 1258 android_thread_func_t entryFunction, 1259 void* userData, 1260 const char* threadName, 1261 int32_t threadPriority, 1262 size_t threadStackSize, 1263 android_thread_id_t* threadId) 1264{ 1265 void** args = (void**) malloc(3 * sizeof(void*)); // javaThreadShell must free 1266 int result; 1267 1268 LOG_ALWAYS_FATAL_IF(threadName == nullptr, "threadName not provided to javaCreateThreadEtc"); 1269 1270 args[0] = (void*) entryFunction; 1271 args[1] = userData; 1272 args[2] = (void*) strdup(threadName); // javaThreadShell must free 1273 1274 result = androidCreateRawThreadEtc(AndroidRuntime::javaThreadShell, args, 1275 threadName, threadPriority, threadStackSize, threadId); 1276 return result; 1277} 1278 1279/* 1280 * Create a thread that is visible from the VM. 1281 * 1282 * This is called from elsewhere in the library. 1283 */ 1284/*static*/ android_thread_id_t AndroidRuntime::createJavaThread(const char* name, 1285 void (*start)(void *), void* arg) 1286{ 1287 android_thread_id_t threadId = 0; 1288 javaCreateThreadEtc((android_thread_func_t) start, arg, name, 1289 ANDROID_PRIORITY_DEFAULT, 0, &threadId); 1290 return threadId; 1291} 1292 1293#if 0 1294static void quickTest(void* arg) 1295{ 1296 const char* str = (const char*) arg; 1297 1298 printf("In quickTest: %s\n", str); 1299} 1300#endif 1301 1302#ifdef NDEBUG 1303 #define REG_JNI(name) { name } 1304 struct RegJNIRec { 1305 int (*mProc)(JNIEnv*); 1306 }; 1307#else 1308 #define REG_JNI(name) { name, #name } 1309 struct RegJNIRec { 1310 int (*mProc)(JNIEnv*); 1311 const char* mName; 1312 }; 1313#endif 1314 1315typedef void (*RegJAMProc)(); 1316 1317static int register_jni_procs(const RegJNIRec array[], size_t count, JNIEnv* env) 1318{ 1319 for (size_t i = 0; i < count; i++) { 1320 if (array[i].mProc(env) < 0) { 1321#ifndef NDEBUG 1322 ALOGD("----------!!! %s failed to load\n", array[i].mName); 1323#endif 1324 return -1; 1325 } 1326 } 1327 return 0; 1328} 1329 1330static const RegJNIRec gRegJNI[] = { 1331 REG_JNI(register_com_android_internal_os_RuntimeInit), 1332 REG_JNI(register_com_android_internal_os_ZygoteInit_nativeZygoteInit), 1333 REG_JNI(register_android_os_SystemClock), 1334 REG_JNI(register_android_util_EventLog), 1335 REG_JNI(register_android_util_Log), 1336 REG_JNI(register_android_util_MemoryIntArray), 1337 REG_JNI(register_android_util_PathParser), 1338 REG_JNI(register_android_util_StatsLog), 1339 REG_JNI(register_android_app_admin_SecurityLog), 1340 REG_JNI(register_android_content_AssetManager), 1341 REG_JNI(register_android_content_StringBlock), 1342 REG_JNI(register_android_content_XmlBlock), 1343 REG_JNI(register_android_text_AndroidCharacter), 1344 REG_JNI(register_android_text_Hyphenator), 1345 REG_JNI(register_android_text_MeasuredParagraph), 1346 REG_JNI(register_android_text_StaticLayout), 1347 REG_JNI(register_android_view_InputDevice), 1348 REG_JNI(register_android_view_KeyCharacterMap), 1349 REG_JNI(register_android_os_Process), 1350 REG_JNI(register_android_os_SystemProperties), 1351 REG_JNI(register_android_os_Binder), 1352 REG_JNI(register_android_os_Parcel), 1353 REG_JNI(register_android_os_HidlSupport), 1354 REG_JNI(register_android_os_HwBinder), 1355 REG_JNI(register_android_os_HwBlob), 1356 REG_JNI(register_android_os_HwParcel), 1357 REG_JNI(register_android_os_HwRemoteBinder), 1358 REG_JNI(register_android_os_VintfObject), 1359 REG_JNI(register_android_os_VintfRuntimeInfo), 1360 REG_JNI(register_android_nio_utils), 1361 REG_JNI(register_android_graphics_Canvas), 1362 REG_JNI(register_android_graphics_Graphics), 1363 REG_JNI(register_android_view_DisplayEventReceiver), 1364 REG_JNI(register_android_view_RenderNode), 1365 REG_JNI(register_android_view_RenderNodeAnimator), 1366 REG_JNI(register_android_view_DisplayListCanvas), 1367 REG_JNI(register_android_view_HardwareLayer), 1368 REG_JNI(register_android_view_ThreadedRenderer), 1369 REG_JNI(register_android_view_Surface), 1370 REG_JNI(register_android_view_SurfaceControl), 1371 REG_JNI(register_android_view_SurfaceSession), 1372 REG_JNI(register_android_view_TextureView), 1373 REG_JNI(register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper), 1374 REG_JNI(register_com_google_android_gles_jni_EGLImpl), 1375 REG_JNI(register_com_google_android_gles_jni_GLImpl), 1376 REG_JNI(register_android_opengl_jni_EGL14), 1377 REG_JNI(register_android_opengl_jni_EGLExt), 1378 REG_JNI(register_android_opengl_jni_GLES10), 1379 REG_JNI(register_android_opengl_jni_GLES10Ext), 1380 REG_JNI(register_android_opengl_jni_GLES11), 1381 REG_JNI(register_android_opengl_jni_GLES11Ext), 1382 REG_JNI(register_android_opengl_jni_GLES20), 1383 REG_JNI(register_android_opengl_jni_GLES30), 1384 REG_JNI(register_android_opengl_jni_GLES31), 1385 REG_JNI(register_android_opengl_jni_GLES31Ext), 1386 REG_JNI(register_android_opengl_jni_GLES32), 1387 1388 REG_JNI(register_android_graphics_Bitmap), 1389 REG_JNI(register_android_graphics_BitmapFactory), 1390 REG_JNI(register_android_graphics_BitmapRegionDecoder), 1391 REG_JNI(register_android_graphics_ByteBufferStreamAdaptor), 1392 REG_JNI(register_android_graphics_Camera), 1393 REG_JNI(register_android_graphics_CreateJavaOutputStreamAdaptor), 1394 REG_JNI(register_android_graphics_CanvasProperty), 1395 REG_JNI(register_android_graphics_ColorFilter), 1396 REG_JNI(register_android_graphics_DrawFilter), 1397 REG_JNI(register_android_graphics_FontFamily), 1398 REG_JNI(register_android_graphics_GraphicBuffer), 1399 REG_JNI(register_android_graphics_ImageDecoder), 1400 REG_JNI(register_android_graphics_drawable_AnimatedImageDrawable), 1401 REG_JNI(register_android_graphics_Interpolator), 1402 REG_JNI(register_android_graphics_MaskFilter), 1403 REG_JNI(register_android_graphics_Matrix), 1404 REG_JNI(register_android_graphics_Movie), 1405 REG_JNI(register_android_graphics_NinePatch), 1406 REG_JNI(register_android_graphics_Paint), 1407 REG_JNI(register_android_graphics_Path), 1408 REG_JNI(register_android_graphics_PathMeasure), 1409 REG_JNI(register_android_graphics_PathEffect), 1410 REG_JNI(register_android_graphics_Picture), 1411 REG_JNI(register_android_graphics_Region), 1412 REG_JNI(register_android_graphics_Shader), 1413 REG_JNI(register_android_graphics_SurfaceTexture), 1414 REG_JNI(register_android_graphics_Typeface), 1415 REG_JNI(register_android_graphics_YuvImage), 1416 REG_JNI(register_android_graphics_drawable_AnimatedVectorDrawable), 1417 REG_JNI(register_android_graphics_drawable_VectorDrawable), 1418 REG_JNI(register_android_graphics_pdf_PdfDocument), 1419 REG_JNI(register_android_graphics_pdf_PdfEditor), 1420 REG_JNI(register_android_graphics_pdf_PdfRenderer), 1421 1422 REG_JNI(register_android_database_CursorWindow), 1423 REG_JNI(register_android_database_SQLiteConnection), 1424 REG_JNI(register_android_database_SQLiteGlobal), 1425 REG_JNI(register_android_database_SQLiteDebug), 1426 REG_JNI(register_android_os_Debug), 1427 REG_JNI(register_android_os_FileObserver), 1428 REG_JNI(register_android_os_GraphicsEnvironment), 1429 REG_JNI(register_android_os_MessageQueue), 1430 REG_JNI(register_android_os_SELinux), 1431 REG_JNI(register_android_os_Trace), 1432 REG_JNI(register_android_os_UEventObserver), 1433 REG_JNI(register_android_net_LocalSocketImpl), 1434 REG_JNI(register_android_net_NetworkUtils), 1435 REG_JNI(register_android_os_MemoryFile), 1436 REG_JNI(register_android_os_SharedMemory), 1437 REG_JNI(register_com_android_internal_os_ClassLoaderFactory), 1438 REG_JNI(register_com_android_internal_os_Zygote), 1439 REG_JNI(register_com_android_internal_os_ZygoteInit), 1440 REG_JNI(register_com_android_internal_util_VirtualRefBasePtr), 1441 REG_JNI(register_android_hardware_Camera), 1442 REG_JNI(register_android_hardware_camera2_CameraMetadata), 1443 REG_JNI(register_android_hardware_camera2_legacy_LegacyCameraDevice), 1444 REG_JNI(register_android_hardware_camera2_legacy_PerfMeasurement), 1445 REG_JNI(register_android_hardware_camera2_DngCreator), 1446 REG_JNI(register_android_hardware_HardwareBuffer), 1447 REG_JNI(register_android_hardware_SensorManager), 1448 REG_JNI(register_android_hardware_SerialPort), 1449 REG_JNI(register_android_hardware_SoundTrigger), 1450 REG_JNI(register_android_hardware_UsbDevice), 1451 REG_JNI(register_android_hardware_UsbDeviceConnection), 1452 REG_JNI(register_android_hardware_UsbRequest), 1453 REG_JNI(register_android_hardware_location_ActivityRecognitionHardware), 1454 REG_JNI(register_android_media_AudioRecord), 1455 REG_JNI(register_android_media_AudioSystem), 1456 REG_JNI(register_android_media_AudioTrack), 1457 REG_JNI(register_android_media_JetPlayer), 1458 REG_JNI(register_android_media_RemoteDisplay), 1459 REG_JNI(register_android_media_ToneGenerator), 1460 1461 REG_JNI(register_android_opengl_classes), 1462 REG_JNI(register_android_server_NetworkManagementSocketTagger), 1463 REG_JNI(register_android_ddm_DdmHandleNativeHeap), 1464 REG_JNI(register_android_backup_BackupDataInput), 1465 REG_JNI(register_android_backup_BackupDataOutput), 1466 REG_JNI(register_android_backup_FileBackupHelperBase), 1467 REG_JNI(register_android_backup_BackupHelperDispatcher), 1468 REG_JNI(register_android_app_backup_FullBackup), 1469 REG_JNI(register_android_app_Activity), 1470 REG_JNI(register_android_app_ActivityThread), 1471 REG_JNI(register_android_app_NativeActivity), 1472 REG_JNI(register_android_util_jar_StrictJarFile), 1473 REG_JNI(register_android_view_InputChannel), 1474 REG_JNI(register_android_view_InputEventReceiver), 1475 REG_JNI(register_android_view_InputEventSender), 1476 REG_JNI(register_android_view_InputQueue), 1477 REG_JNI(register_android_view_KeyEvent), 1478 REG_JNI(register_android_view_MotionEvent), 1479 REG_JNI(register_android_view_PointerIcon), 1480 REG_JNI(register_android_view_VelocityTracker), 1481 1482 REG_JNI(register_android_content_res_ObbScanner), 1483 REG_JNI(register_android_content_res_Configuration), 1484 1485 REG_JNI(register_android_animation_PropertyValuesHolder), 1486 REG_JNI(register_com_android_internal_content_NativeLibraryHelper), 1487 REG_JNI(register_com_android_internal_net_NetworkStatsFactory), 1488 REG_JNI(register_com_android_internal_os_FuseAppLoop), 1489}; 1490 1491/* 1492 * Register android native functions with the VM. 1493 */ 1494/*static*/ int AndroidRuntime::startReg(JNIEnv* env) 1495{ 1496 ATRACE_NAME("RegisterAndroidNatives"); 1497 /* 1498 * This hook causes all future threads created in this process to be 1499 * attached to the JavaVM. (This needs to go away in favor of JNI 1500 * Attach calls.) 1501 */ 1502 androidSetCreateThreadFunc((android_create_thread_fn) javaCreateThreadEtc); 1503 1504 ALOGV("--- registering native functions ---\n"); 1505 1506 /* 1507 * Every "register" function calls one or more things that return 1508 * a local reference (e.g. FindClass). Because we haven't really 1509 * started the VM yet, they're all getting stored in the base frame 1510 * and never released. Use Push/Pop to manage the storage. 1511 */ 1512 env->PushLocalFrame(200); 1513 1514 if (register_jni_procs(gRegJNI, NELEM(gRegJNI), env) < 0) { 1515 env->PopLocalFrame(NULL); 1516 return -1; 1517 } 1518 env->PopLocalFrame(NULL); 1519 1520 //createJavaThread("fubar", quickTest, (void*) "hello"); 1521 1522 return 0; 1523} 1524 1525AndroidRuntime* AndroidRuntime::getRuntime() 1526{ 1527 return gCurRuntime; 1528} 1529 1530/** 1531 * Used by surface flinger's DdmConnection to register native methods from 1532 * the framework. 1533 */ 1534extern "C" jint registerFrameworkNatives(JNIEnv* env) { 1535 return register_jni_procs(gRegJNI, NELEM(gRegJNI), env); 1536} 1537} // namespace android 1538