AndroidRuntime.cpp revision cd0caf5e8e8056ee714d8da5d4f76d08feabca5c
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#include <binder/IBinder.h> 23#include <binder/IPCThreadState.h> 24#include <binder/IServiceManager.h> 25#include <utils/Log.h> 26#include <utils/misc.h> 27#include <utils/Trace.h> 28#include <binder/Parcel.h> 29#include <utils/threads.h> 30#include <cutils/properties.h> 31 32#include <SkGraphics.h> 33 34#include "jni.h" 35#include <nativehelper/JNIHelp.h> 36#include <nativehelper/JniInvocation.h> 37#include "android_util_Binder.h" 38 39#include <stdio.h> 40#include <signal.h> 41#include <sys/stat.h> 42#include <sys/types.h> 43#include <signal.h> 44#include <dirent.h> 45#include <assert.h> 46 47#include <string> 48#include <vector> 49 50 51using namespace android; 52 53extern int register_android_os_Binder(JNIEnv* env); 54extern int register_android_os_Process(JNIEnv* env); 55extern int register_android_graphics_Bitmap(JNIEnv*); 56extern int register_android_graphics_BitmapFactory(JNIEnv*); 57extern int register_android_graphics_BitmapRegionDecoder(JNIEnv*); 58extern int register_android_graphics_Camera(JNIEnv* env); 59extern int register_android_graphics_CreateJavaOutputStreamAdaptor(JNIEnv* env); 60extern int register_android_graphics_GraphicBuffer(JNIEnv* env); 61extern int register_android_graphics_Graphics(JNIEnv* env); 62extern int register_android_graphics_Interpolator(JNIEnv* env); 63extern int register_android_graphics_MaskFilter(JNIEnv* env); 64extern int register_android_graphics_Movie(JNIEnv* env); 65extern int register_android_graphics_NinePatch(JNIEnv*); 66extern int register_android_graphics_PathEffect(JNIEnv* env); 67extern int register_android_graphics_Shader(JNIEnv* env); 68extern int register_android_graphics_Typeface(JNIEnv* env); 69extern int register_android_graphics_YuvImage(JNIEnv* env); 70 71extern int register_com_google_android_gles_jni_EGLImpl(JNIEnv* env); 72extern int register_com_google_android_gles_jni_GLImpl(JNIEnv* env); 73extern int register_android_opengl_jni_EGL14(JNIEnv* env); 74extern int register_android_opengl_jni_EGLExt(JNIEnv* env); 75extern int register_android_opengl_jni_GLES10(JNIEnv* env); 76extern int register_android_opengl_jni_GLES10Ext(JNIEnv* env); 77extern int register_android_opengl_jni_GLES11(JNIEnv* env); 78extern int register_android_opengl_jni_GLES11Ext(JNIEnv* env); 79extern int register_android_opengl_jni_GLES20(JNIEnv* env); 80extern int register_android_opengl_jni_GLES30(JNIEnv* env); 81extern int register_android_opengl_jni_GLES31(JNIEnv* env); 82extern int register_android_opengl_jni_GLES31Ext(JNIEnv* env); 83extern int register_android_opengl_jni_GLES32(JNIEnv* env); 84 85extern int register_android_hardware_Camera(JNIEnv *env); 86extern int register_android_hardware_camera2_CameraMetadata(JNIEnv *env); 87extern int register_android_hardware_camera2_legacy_LegacyCameraDevice(JNIEnv *env); 88extern int register_android_hardware_camera2_legacy_PerfMeasurement(JNIEnv *env); 89extern int register_android_hardware_camera2_DngCreator(JNIEnv *env); 90extern int register_android_hardware_HardwareBuffer(JNIEnv *env); 91extern int register_android_hardware_SensorManager(JNIEnv *env); 92extern int register_android_hardware_SerialPort(JNIEnv *env); 93extern int register_android_hardware_SoundTrigger(JNIEnv *env); 94extern int register_android_hardware_UsbDevice(JNIEnv *env); 95extern int register_android_hardware_UsbDeviceConnection(JNIEnv *env); 96extern int register_android_hardware_UsbRequest(JNIEnv *env); 97extern int register_android_hardware_location_ActivityRecognitionHardware(JNIEnv* env); 98 99extern int register_android_media_AudioRecord(JNIEnv *env); 100extern int register_android_media_AudioSystem(JNIEnv *env); 101extern int register_android_media_AudioTrack(JNIEnv *env); 102extern int register_android_media_JetPlayer(JNIEnv *env); 103extern int register_android_media_ToneGenerator(JNIEnv *env); 104 105namespace android { 106 107/* 108 * JNI-based registration functions. Note these are properly contained in 109 * namespace android. 110 */ 111extern int register_android_app_admin_SecurityLog(JNIEnv* env); 112extern int register_android_content_AssetManager(JNIEnv* env); 113extern int register_android_util_EventLog(JNIEnv* env); 114extern int register_android_util_Log(JNIEnv* env); 115extern int register_android_util_MemoryIntArray(JNIEnv* env); 116extern int register_android_util_PathParser(JNIEnv* env); 117extern int register_android_content_StringBlock(JNIEnv* env); 118extern int register_android_content_XmlBlock(JNIEnv* env); 119extern int register_android_graphics_Canvas(JNIEnv* env); 120extern int register_android_graphics_CanvasProperty(JNIEnv* env); 121extern int register_android_graphics_ColorFilter(JNIEnv* env); 122extern int register_android_graphics_DrawFilter(JNIEnv* env); 123extern int register_android_graphics_FontFamily(JNIEnv* env); 124extern int register_android_graphics_Matrix(JNIEnv* env); 125extern int register_android_graphics_Paint(JNIEnv* env); 126extern int register_android_graphics_Path(JNIEnv* env); 127extern int register_android_graphics_PathMeasure(JNIEnv* env); 128extern int register_android_graphics_Picture(JNIEnv*); 129extern int register_android_graphics_Region(JNIEnv* env); 130extern int register_android_graphics_SurfaceTexture(JNIEnv* env); 131extern int register_android_graphics_drawable_AnimatedVectorDrawable(JNIEnv* env); 132extern int register_android_graphics_drawable_VectorDrawable(JNIEnv* env); 133extern int register_android_graphics_pdf_PdfDocument(JNIEnv* env); 134extern int register_android_graphics_pdf_PdfEditor(JNIEnv* env); 135extern int register_android_graphics_pdf_PdfRenderer(JNIEnv* env); 136extern int register_android_view_DisplayEventReceiver(JNIEnv* env); 137extern int register_android_view_DisplayListCanvas(JNIEnv* env); 138extern int register_android_view_HardwareLayer(JNIEnv* env); 139extern int register_android_view_RenderNode(JNIEnv* env); 140extern int register_android_view_RenderNodeAnimator(JNIEnv* env); 141extern int register_android_view_Surface(JNIEnv* env); 142extern int register_android_view_SurfaceControl(JNIEnv* env); 143extern int register_android_view_SurfaceSession(JNIEnv* env); 144extern int register_android_view_TextureView(JNIEnv* env); 145extern int register_android_view_ThreadedRenderer(JNIEnv* env); 146extern int register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper(JNIEnv *env); 147extern int register_android_database_CursorWindow(JNIEnv* env); 148extern int register_android_database_SQLiteConnection(JNIEnv* env); 149extern int register_android_database_SQLiteGlobal(JNIEnv* env); 150extern int register_android_database_SQLiteDebug(JNIEnv* env); 151extern int register_android_nio_utils(JNIEnv* env); 152extern int register_android_os_Debug(JNIEnv* env); 153extern int register_android_os_GraphicsEnvironment(JNIEnv* env); 154extern int register_android_os_HwBinder(JNIEnv *env); 155extern int register_android_os_HwBlob(JNIEnv *env); 156extern int register_android_os_HwParcel(JNIEnv *env); 157extern int register_android_os_HwRemoteBinder(JNIEnv *env); 158extern int register_android_os_MessageQueue(JNIEnv* env); 159extern int register_android_os_Parcel(JNIEnv* env); 160extern int register_android_os_SELinux(JNIEnv* env); 161extern int register_android_os_VintfObject(JNIEnv *env); 162extern int register_android_os_VintfRuntimeInfo(JNIEnv *env); 163extern int register_android_os_seccomp(JNIEnv* env); 164extern int register_android_os_SystemProperties(JNIEnv *env); 165extern int register_android_os_SystemClock(JNIEnv* env); 166extern int register_android_os_Trace(JNIEnv* env); 167extern int register_android_os_FileObserver(JNIEnv *env); 168extern int register_android_os_UEventObserver(JNIEnv* env); 169extern int register_android_os_MemoryFile(JNIEnv* env); 170extern int register_android_os_SharedMemory(JNIEnv* env); 171extern int register_android_net_LocalSocketImpl(JNIEnv* env); 172extern int register_android_net_NetworkUtils(JNIEnv* env); 173extern int register_android_net_TrafficStats(JNIEnv* env); 174extern int register_android_text_AndroidCharacter(JNIEnv *env); 175extern int register_android_text_StaticLayout(JNIEnv *env); 176extern int register_android_text_AndroidBidi(JNIEnv *env); 177extern int register_android_opengl_classes(JNIEnv *env); 178extern int register_android_ddm_DdmHandleNativeHeap(JNIEnv *env); 179extern int register_android_server_NetworkManagementSocketTagger(JNIEnv* env); 180extern int register_android_backup_BackupDataInput(JNIEnv *env); 181extern int register_android_backup_BackupDataOutput(JNIEnv *env); 182extern int register_android_backup_FileBackupHelperBase(JNIEnv *env); 183extern int register_android_backup_BackupHelperDispatcher(JNIEnv *env); 184extern int register_android_app_backup_FullBackup(JNIEnv *env); 185extern int register_android_app_Activity(JNIEnv *env); 186extern int register_android_app_ActivityThread(JNIEnv *env); 187extern int register_android_app_ApplicationLoaders(JNIEnv *env); 188extern int register_android_app_NativeActivity(JNIEnv *env); 189extern int register_android_media_RemoteDisplay(JNIEnv *env); 190extern int register_android_util_jar_StrictJarFile(JNIEnv* env); 191extern int register_android_view_InputChannel(JNIEnv* env); 192extern int register_android_view_InputDevice(JNIEnv* env); 193extern int register_android_view_InputEventReceiver(JNIEnv* env); 194extern int register_android_view_InputEventSender(JNIEnv* env); 195extern int register_android_view_InputQueue(JNIEnv* env); 196extern int register_android_view_KeyCharacterMap(JNIEnv *env); 197extern int register_android_view_KeyEvent(JNIEnv* env); 198extern int register_android_view_MotionEvent(JNIEnv* env); 199extern int register_android_view_PointerIcon(JNIEnv* env); 200extern int register_android_view_VelocityTracker(JNIEnv* env); 201extern int register_android_content_res_ObbScanner(JNIEnv* env); 202extern int register_android_content_res_Configuration(JNIEnv* env); 203extern int register_android_animation_PropertyValuesHolder(JNIEnv *env); 204extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env); 205extern int register_com_android_internal_net_NetworkStatsFactory(JNIEnv *env); 206extern int register_com_android_internal_os_ClassLoaderFactory(JNIEnv* env); 207extern int register_com_android_internal_os_FuseAppLoop(JNIEnv* env); 208extern int register_com_android_internal_os_Zygote(JNIEnv *env); 209extern int register_com_android_internal_os_ZygoteInit(JNIEnv *env); 210extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env); 211 212static AndroidRuntime* gCurRuntime = NULL; 213 214/* 215 * Code written in the Java Programming Language calls here from main(). 216 */ 217static void com_android_internal_os_RuntimeInit_nativeFinishInit(JNIEnv* env, jobject clazz) 218{ 219 gCurRuntime->onStarted(); 220} 221 222static void com_android_internal_os_ZygoteInit_nativeZygoteInit(JNIEnv* env, jobject clazz) 223{ 224 gCurRuntime->onZygoteInit(); 225} 226 227static void com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup(JNIEnv* env, 228 jobject clazz, jboolean exitWithoutCleanup) 229{ 230 gCurRuntime->setExitWithoutCleanup(exitWithoutCleanup); 231} 232 233/* 234 * JNI registration. 235 */ 236 237int register_com_android_internal_os_RuntimeInit(JNIEnv* env) 238{ 239 const JNINativeMethod methods[] = { 240 { "nativeFinishInit", "()V", 241 (void*) com_android_internal_os_RuntimeInit_nativeFinishInit }, 242 { "nativeSetExitWithoutCleanup", "(Z)V", 243 (void*) com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup }, 244 }; 245 return jniRegisterNativeMethods(env, "com/android/internal/os/RuntimeInit", 246 methods, NELEM(methods)); 247} 248 249int register_com_android_internal_os_ZygoteInit_nativeZygoteInit(JNIEnv* env) 250{ 251 const JNINativeMethod methods[] = { 252 { "nativeZygoteInit", "()V", 253 (void*) com_android_internal_os_ZygoteInit_nativeZygoteInit }, 254 }; 255 return jniRegisterNativeMethods(env, "com/android/internal/os/ZygoteInit", 256 methods, NELEM(methods)); 257} 258 259// ---------------------------------------------------------------------- 260 261/*static*/ JavaVM* AndroidRuntime::mJavaVM = NULL; 262 263AndroidRuntime::AndroidRuntime(char* argBlockStart, const size_t argBlockLength) : 264 mExitWithoutCleanup(false), 265 mArgBlockStart(argBlockStart), 266 mArgBlockLength(argBlockLength) 267{ 268 SkGraphics::Init(); 269 270 // Pre-allocate enough space to hold a fair number of options. 271 mOptions.setCapacity(20); 272 273 assert(gCurRuntime == NULL); // one per process 274 gCurRuntime = this; 275} 276 277AndroidRuntime::~AndroidRuntime() 278{ 279} 280 281/* 282 * Register native methods using JNI. 283 */ 284/*static*/ int AndroidRuntime::registerNativeMethods(JNIEnv* env, 285 const char* className, const JNINativeMethod* gMethods, int numMethods) 286{ 287 return jniRegisterNativeMethods(env, className, gMethods, numMethods); 288} 289 290void AndroidRuntime::setArgv0(const char* argv0, bool setProcName) { 291 if (setProcName) { 292 int len = strlen(argv0); 293 if (len < 15) { 294 pthread_setname_np(pthread_self(), argv0); 295 } else { 296 pthread_setname_np(pthread_self(), argv0 + len - 15); 297 } 298 } 299 memset(mArgBlockStart, 0, mArgBlockLength); 300 strlcpy(mArgBlockStart, argv0, mArgBlockLength); 301} 302 303status_t AndroidRuntime::callMain(const String8& className, jclass clazz, 304 const Vector<String8>& args) 305{ 306 JNIEnv* env; 307 jmethodID methodId; 308 309 ALOGD("Calling main entry %s", className.string()); 310 311 env = getJNIEnv(); 312 if (clazz == NULL || env == NULL) { 313 return UNKNOWN_ERROR; 314 } 315 316 methodId = env->GetStaticMethodID(clazz, "main", "([Ljava/lang/String;)V"); 317 if (methodId == NULL) { 318 ALOGE("ERROR: could not find method %s.main(String[])\n", className.string()); 319 return UNKNOWN_ERROR; 320 } 321 322 /* 323 * We want to call main() with a String array with our arguments in it. 324 * Create an array and populate it. 325 */ 326 jclass stringClass; 327 jobjectArray strArray; 328 329 const size_t numArgs = args.size(); 330 stringClass = env->FindClass("java/lang/String"); 331 strArray = env->NewObjectArray(numArgs, stringClass, NULL); 332 333 for (size_t i = 0; i < numArgs; i++) { 334 jstring argStr = env->NewStringUTF(args[i].string()); 335 env->SetObjectArrayElement(strArray, i, argStr); 336 } 337 338 env->CallStaticVoidMethod(clazz, methodId, strArray); 339 return NO_ERROR; 340} 341 342/* 343 * The VM calls this through the "exit" hook. 344 */ 345static void runtime_exit(int code) 346{ 347 gCurRuntime->exit(code); 348} 349 350/* 351 * The VM calls this through the "vfprintf" hook. 352 * 353 * We ignore "fp" and just write the results to the log file. 354 */ 355static void runtime_vfprintf(FILE* fp, const char* format, va_list ap) 356{ 357 LOG_PRI_VA(ANDROID_LOG_INFO, "vm-printf", format, ap); 358} 359 360/** 361 * The VM calls this when mutex contention debugging is enabled to 362 * determine whether or not the blocked thread was a "sensitive thread" 363 * for user responsiveness/smoothess. 364 * 365 * Our policy for this is whether or not we're tracing any StrictMode 366 * events on this thread (which we might've inherited via Binder calls 367 * into us) 368 */ 369static bool runtime_isSensitiveThread() { 370 IPCThreadState* state = IPCThreadState::selfOrNull(); 371 return state && state->getStrictModePolicy() != 0; 372} 373 374static int hasDir(const char* dir) 375{ 376 struct stat s; 377 int res = stat(dir, &s); 378 if (res == 0) { 379 return S_ISDIR(s.st_mode); 380 } 381 return 0; 382} 383 384static bool hasFile(const char* file) { 385 struct stat s; 386 int res = stat(file, &s); 387 if (res == 0) { 388 return S_ISREG(s.st_mode); 389 } 390 return false; 391} 392 393// Convenience wrapper over the property API that returns an 394// std::string. 395std::string getProperty(const char* key, const char* defaultValue) { 396 std::vector<char> temp(PROPERTY_VALUE_MAX); 397 const int len = property_get(key, &temp[0], defaultValue); 398 if (len < 0) { 399 return ""; 400 } 401 return std::string(&temp[0], len); 402} 403 404/* 405 * Read the persistent locale. Inspects the following system properties 406 * (in order) and returns the first non-empty property in the list : 407 * 408 * (1) persist.sys.locale 409 * (2) persist.sys.language/country/localevar (country and localevar are 410 * inspected iff. language is non-empty. 411 * (3) ro.product.locale 412 * (4) ro.product.locale.language/region 413 * 414 * Note that we need to inspect persist.sys.language/country/localevar to 415 * preserve language settings for devices that are upgrading from Lollipop 416 * to M. The same goes for ro.product.locale.language/region as well. 417 */ 418const std::string readLocale() 419{ 420 const std::string locale = getProperty("persist.sys.locale", ""); 421 if (!locale.empty()) { 422 return locale; 423 } 424 425 const std::string language = getProperty("persist.sys.language", ""); 426 if (!language.empty()) { 427 const std::string country = getProperty("persist.sys.country", ""); 428 const std::string variant = getProperty("persist.sys.localevar", ""); 429 430 std::string out = language; 431 if (!country.empty()) { 432 out = out + "-" + country; 433 } 434 435 if (!variant.empty()) { 436 out = out + "-" + variant; 437 } 438 439 return out; 440 } 441 442 const std::string productLocale = getProperty("ro.product.locale", ""); 443 if (!productLocale.empty()) { 444 return productLocale; 445 } 446 447 // If persist.sys.locale and ro.product.locale are missing, 448 // construct a locale value from the individual locale components. 449 const std::string productLanguage = getProperty("ro.product.locale.language", "en"); 450 const std::string productRegion = getProperty("ro.product.locale.region", "US"); 451 452 return productLanguage + "-" + productRegion; 453} 454 455void AndroidRuntime::addOption(const char* optionString, void* extraInfo) 456{ 457 JavaVMOption opt; 458 opt.optionString = optionString; 459 opt.extraInfo = extraInfo; 460 mOptions.add(opt); 461} 462 463/* 464 * Parse a property containing space-separated options that should be 465 * passed directly to the VM, e.g. "-Xmx32m -verbose:gc -Xregenmap". 466 * 467 * This will cut up "extraOptsBuf" as we chop it into individual options. 468 * 469 * If "quotingArg" is non-null, it is passed before each extra option in mOptions. 470 * 471 * Adds the strings, if any, to mOptions. 472 */ 473void AndroidRuntime::parseExtraOpts(char* extraOptsBuf, const char* quotingArg) 474{ 475 char* start = extraOptsBuf; 476 char* end = NULL; 477 while (*start != '\0') { 478 while (*start == ' ') /* skip leading whitespace */ 479 start++; 480 if (*start == '\0') /* was trailing ws, bail */ 481 break; 482 483 end = start+1; 484 while (*end != ' ' && *end != '\0') /* find end of token */ 485 end++; 486 if (*end == ' ') 487 *end++ = '\0'; /* mark end, advance to indicate more */ 488 489 if (quotingArg != NULL) { 490 addOption(quotingArg); 491 } 492 addOption(start); 493 start = end; 494 } 495} 496 497/* 498 * Reads a "property" into "buffer" with a default of "defaultArg". If 499 * the property is non-empty, it is treated as a runtime option such 500 * as "-Xmx32m". 501 * 502 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx". 503 * 504 * If an argument is found, it is added to mOptions. 505 * 506 * If an option is found, it is added to mOptions and true is 507 * returned. Otherwise false is returned. 508 */ 509bool AndroidRuntime::parseRuntimeOption(const char* property, 510 char* buffer, 511 const char* runtimeArg, 512 const char* defaultArg) 513{ 514 strcpy(buffer, runtimeArg); 515 size_t runtimeArgLen = strlen(runtimeArg); 516 property_get(property, buffer+runtimeArgLen, defaultArg); 517 if (buffer[runtimeArgLen] == '\0') { 518 return false; 519 } 520 addOption(buffer); 521 return true; 522} 523 524/* 525 * Reads a "property" into "buffer". If the property is non-empty, it 526 * is treated as a dex2oat compiler option that should be 527 * passed as a quoted option, e.g. "-Ximage-compiler-option --compiler-filter=assume-verified". 528 * 529 * The "compilerArg" is a prefix for the option such as "--compiler-filter=". 530 * 531 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option". 532 * 533 * If an option is found, it is added to mOptions and true is 534 * returned. Otherwise false is returned. 535 */ 536bool AndroidRuntime::parseCompilerOption(const char* property, 537 char* buffer, 538 const char* compilerArg, 539 const char* quotingArg) 540{ 541 strcpy(buffer, compilerArg); 542 size_t compilerArgLen = strlen(compilerArg); 543 property_get(property, buffer+compilerArgLen, ""); 544 if (buffer[compilerArgLen] == '\0') { 545 return false; 546 } 547 addOption(quotingArg); 548 addOption(buffer); 549 return true; 550} 551 552/* 553 * Reads a "property" into "buffer". If the property is non-empty, it 554 * is treated as a dex2oat compiler runtime option that should be 555 * passed as a quoted option, e.g. "-Ximage-compiler-option 556 * --runtime-arg -Ximage-compiler-option -Xmx32m". 557 * 558 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx". 559 * 560 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option". 561 * 562 * If an option is found, it is added to mOptions and true is 563 * returned. Otherwise false is returned. 564 */ 565bool AndroidRuntime::parseCompilerRuntimeOption(const char* property, 566 char* buffer, 567 const char* runtimeArg, 568 const char* quotingArg) 569{ 570 strcpy(buffer, runtimeArg); 571 size_t runtimeArgLen = strlen(runtimeArg); 572 property_get(property, buffer+runtimeArgLen, ""); 573 if (buffer[runtimeArgLen] == '\0') { 574 return false; 575 } 576 addOption(quotingArg); 577 addOption("--runtime-arg"); 578 addOption(quotingArg); 579 addOption(buffer); 580 return true; 581} 582 583/* 584 * Start the Dalvik Virtual Machine. 585 * 586 * Various arguments, most determined by system properties, are passed in. 587 * The "mOptions" vector is updated. 588 * 589 * CAUTION: when adding options in here, be careful not to put the 590 * char buffer inside a nested scope. Adding the buffer to the 591 * options using mOptions.add() does not copy the buffer, so if the 592 * buffer goes out of scope the option may be overwritten. It's best 593 * to put the buffer at the top of the function so that it is more 594 * unlikely that someone will surround it in a scope at a later time 595 * and thus introduce a bug. 596 * 597 * Returns 0 on success. 598 */ 599int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv, bool zygote) 600{ 601 JavaVMInitArgs initArgs; 602 char propBuf[PROPERTY_VALUE_MAX]; 603 char stackTraceFileBuf[sizeof("-Xstacktracefile:")-1 + PROPERTY_VALUE_MAX]; 604 char jniOptsBuf[sizeof("-Xjniopts:")-1 + PROPERTY_VALUE_MAX]; 605 char heapstartsizeOptsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX]; 606 char heapsizeOptsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX]; 607 char heapgrowthlimitOptsBuf[sizeof("-XX:HeapGrowthLimit=")-1 + PROPERTY_VALUE_MAX]; 608 char heapminfreeOptsBuf[sizeof("-XX:HeapMinFree=")-1 + PROPERTY_VALUE_MAX]; 609 char heapmaxfreeOptsBuf[sizeof("-XX:HeapMaxFree=")-1 + PROPERTY_VALUE_MAX]; 610 char usejitOptsBuf[sizeof("-Xusejit:")-1 + PROPERTY_VALUE_MAX]; 611 char jitmaxsizeOptsBuf[sizeof("-Xjitmaxsize:")-1 + PROPERTY_VALUE_MAX]; 612 char jitinitialsizeOptsBuf[sizeof("-Xjitinitialsize:")-1 + PROPERTY_VALUE_MAX]; 613 char jitthresholdOptsBuf[sizeof("-Xjitthreshold:")-1 + PROPERTY_VALUE_MAX]; 614 char useJitProfilesOptsBuf[sizeof("-Xjitsaveprofilinginfo:")-1 + PROPERTY_VALUE_MAX]; 615 char jitprithreadweightOptBuf[sizeof("-Xjitprithreadweight:")-1 + PROPERTY_VALUE_MAX]; 616 char jittransitionweightOptBuf[sizeof("-Xjittransitionweight:")-1 + PROPERTY_VALUE_MAX]; 617 char hotstartupsamplesOptsBuf[sizeof("-Xps-hot-startup-method-samples:")-1 + PROPERTY_VALUE_MAX]; 618 char madviseRandomOptsBuf[sizeof("-XX:MadviseRandomAccess:")-1 + PROPERTY_VALUE_MAX]; 619 char gctypeOptsBuf[sizeof("-Xgc:")-1 + PROPERTY_VALUE_MAX]; 620 char backgroundgcOptsBuf[sizeof("-XX:BackgroundGC=")-1 + PROPERTY_VALUE_MAX]; 621 char heaptargetutilizationOptsBuf[sizeof("-XX:HeapTargetUtilization=")-1 + PROPERTY_VALUE_MAX]; 622 char cachePruneBuf[sizeof("-Xzygote-max-boot-retry=")-1 + PROPERTY_VALUE_MAX]; 623 char dex2oatXmsImageFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX]; 624 char dex2oatXmxImageFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX]; 625 char dex2oatXmsFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX]; 626 char dex2oatXmxFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX]; 627 char dex2oatCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX]; 628 char dex2oatImageCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX]; 629 char dex2oatThreadsBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX]; 630 char dex2oatThreadsImageBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX]; 631 char dex2oat_isa_variant_key[PROPERTY_KEY_MAX]; 632 char dex2oat_isa_variant[sizeof("--instruction-set-variant=") -1 + PROPERTY_VALUE_MAX]; 633 char dex2oat_isa_features_key[PROPERTY_KEY_MAX]; 634 char dex2oat_isa_features[sizeof("--instruction-set-features=") -1 + PROPERTY_VALUE_MAX]; 635 char dex2oatFlagsBuf[PROPERTY_VALUE_MAX]; 636 char dex2oatImageFlagsBuf[PROPERTY_VALUE_MAX]; 637 char extraOptsBuf[PROPERTY_VALUE_MAX]; 638 char voldDecryptBuf[PROPERTY_VALUE_MAX]; 639 enum { 640 kEMDefault, 641 kEMIntPortable, 642 kEMIntFast, 643 kEMJitCompiler, 644 } executionMode = kEMDefault; 645 char localeOption[sizeof("-Duser.locale=") + PROPERTY_VALUE_MAX]; 646 char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:")-1 + PROPERTY_VALUE_MAX]; 647 char nativeBridgeLibrary[sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX]; 648 char cpuAbiListBuf[sizeof("--cpu-abilist=") + PROPERTY_VALUE_MAX]; 649 char methodTraceFileBuf[sizeof("-Xmethod-trace-file:") + PROPERTY_VALUE_MAX]; 650 char methodTraceFileSizeBuf[sizeof("-Xmethod-trace-file-size:") + PROPERTY_VALUE_MAX]; 651 char fingerprintBuf[sizeof("-Xfingerprint:") + PROPERTY_VALUE_MAX]; 652 653 bool checkJni = false; 654 property_get("dalvik.vm.checkjni", propBuf, ""); 655 if (strcmp(propBuf, "true") == 0) { 656 checkJni = true; 657 } else if (strcmp(propBuf, "false") != 0) { 658 /* property is neither true nor false; fall back on kernel parameter */ 659 property_get("ro.kernel.android.checkjni", propBuf, ""); 660 if (propBuf[0] == '1') { 661 checkJni = true; 662 } 663 } 664 ALOGV("CheckJNI is %s\n", checkJni ? "ON" : "OFF"); 665 if (checkJni) { 666 /* extended JNI checking */ 667 addOption("-Xcheck:jni"); 668 669 /* with -Xcheck:jni, this provides a JNI function call trace */ 670 //addOption("-verbose:jni"); 671 } 672 673 property_get("dalvik.vm.execution-mode", propBuf, ""); 674 if (strcmp(propBuf, "int:portable") == 0) { 675 executionMode = kEMIntPortable; 676 } else if (strcmp(propBuf, "int:fast") == 0) { 677 executionMode = kEMIntFast; 678 } else if (strcmp(propBuf, "int:jit") == 0) { 679 executionMode = kEMJitCompiler; 680 } 681 682 // If dalvik.vm.stack-trace-dir is set, it enables the "new" stack trace 683 // dump scheme and a new file is created for each stack dump. If it isn't set, 684 // the old scheme is enabled. 685 property_get("dalvik.vm.stack-trace-dir", propBuf, ""); 686 if (strlen(propBuf) > 0) { 687 addOption("-Xusetombstonedtraces"); 688 } else { 689 parseRuntimeOption("dalvik.vm.stack-trace-file", stackTraceFileBuf, "-Xstacktracefile:"); 690 } 691 692 strcpy(jniOptsBuf, "-Xjniopts:"); 693 if (parseRuntimeOption("dalvik.vm.jniopts", jniOptsBuf, "-Xjniopts:")) { 694 ALOGI("JNI options: '%s'\n", jniOptsBuf); 695 } 696 697 /* route exit() to our handler */ 698 addOption("exit", (void*) runtime_exit); 699 700 /* route fprintf() to our handler */ 701 addOption("vfprintf", (void*) runtime_vfprintf); 702 703 /* register the framework-specific "is sensitive thread" hook */ 704 addOption("sensitiveThread", (void*) runtime_isSensitiveThread); 705 706 /* enable verbose; standard options are { jni, gc, class } */ 707 //addOption("-verbose:jni"); 708 addOption("-verbose:gc"); 709 //addOption("-verbose:class"); 710 711 /* 712 * The default starting and maximum size of the heap. Larger 713 * values should be specified in a product property override. 714 */ 715 parseRuntimeOption("dalvik.vm.heapstartsize", heapstartsizeOptsBuf, "-Xms", "4m"); 716 parseRuntimeOption("dalvik.vm.heapsize", heapsizeOptsBuf, "-Xmx", "16m"); 717 718 parseRuntimeOption("dalvik.vm.heapgrowthlimit", heapgrowthlimitOptsBuf, "-XX:HeapGrowthLimit="); 719 parseRuntimeOption("dalvik.vm.heapminfree", heapminfreeOptsBuf, "-XX:HeapMinFree="); 720 parseRuntimeOption("dalvik.vm.heapmaxfree", heapmaxfreeOptsBuf, "-XX:HeapMaxFree="); 721 parseRuntimeOption("dalvik.vm.heaptargetutilization", 722 heaptargetutilizationOptsBuf, 723 "-XX:HeapTargetUtilization="); 724 725 /* 726 * JIT related options. 727 */ 728 parseRuntimeOption("dalvik.vm.usejit", usejitOptsBuf, "-Xusejit:"); 729 parseRuntimeOption("dalvik.vm.jitmaxsize", jitmaxsizeOptsBuf, "-Xjitmaxsize:"); 730 parseRuntimeOption("dalvik.vm.jitinitialsize", jitinitialsizeOptsBuf, "-Xjitinitialsize:"); 731 parseRuntimeOption("dalvik.vm.jitthreshold", jitthresholdOptsBuf, "-Xjitthreshold:"); 732 property_get("dalvik.vm.usejitprofiles", useJitProfilesOptsBuf, ""); 733 if (strcmp(useJitProfilesOptsBuf, "true") == 0) { 734 addOption("-Xjitsaveprofilinginfo"); 735 } 736 737 parseRuntimeOption("dalvik.vm.jitprithreadweight", 738 jitprithreadweightOptBuf, 739 "-Xjitprithreadweight:"); 740 741 parseRuntimeOption("dalvik.vm.jittransitionweight", 742 jittransitionweightOptBuf, 743 "-Xjittransitionweight:"); 744 745 /* 746 * Madvise related options. 747 */ 748 parseRuntimeOption("dalvik.vm.madvise-random", madviseRandomOptsBuf, "-XX:MadviseRandomAccess:"); 749 750 /* 751 * Profile related options. 752 */ 753 parseRuntimeOption("dalvik.vm.hot-startup-method-samples", hotstartupsamplesOptsBuf, 754 "-Xps-hot-startup-method-samples:"); 755 756 property_get("ro.config.low_ram", propBuf, ""); 757 if (strcmp(propBuf, "true") == 0) { 758 addOption("-XX:LowMemoryMode"); 759 } 760 761 parseRuntimeOption("dalvik.vm.gctype", gctypeOptsBuf, "-Xgc:"); 762 parseRuntimeOption("dalvik.vm.backgroundgctype", backgroundgcOptsBuf, "-XX:BackgroundGC="); 763 764 /* 765 * Enable debugging only for apps forked from zygote. 766 * Set suspend=y to pause during VM init and use android ADB transport. 767 */ 768 if (zygote) { 769 addOption("-agentlib:jdwp=transport=dt_android_adb,suspend=n,server=y"); 770 } 771 772 parseRuntimeOption("dalvik.vm.lockprof.threshold", 773 lockProfThresholdBuf, 774 "-Xlockprofthreshold:"); 775 776 if (executionMode == kEMIntPortable) { 777 addOption("-Xint:portable"); 778 } else if (executionMode == kEMIntFast) { 779 addOption("-Xint:fast"); 780 } else if (executionMode == kEMJitCompiler) { 781 addOption("-Xint:jit"); 782 } 783 784 // If we are booting without the real /data, don't spend time compiling. 785 property_get("vold.decrypt", voldDecryptBuf, ""); 786 bool skip_compilation = ((strcmp(voldDecryptBuf, "trigger_restart_min_framework") == 0) || 787 (strcmp(voldDecryptBuf, "1") == 0)); 788 789 // Extra options for boot.art/boot.oat image generation. 790 parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xms", dex2oatXmsImageFlagsBuf, 791 "-Xms", "-Ximage-compiler-option"); 792 parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xmx", dex2oatXmxImageFlagsBuf, 793 "-Xmx", "-Ximage-compiler-option"); 794 if (skip_compilation) { 795 addOption("-Ximage-compiler-option"); 796 addOption("--compiler-filter=assume-verified"); 797 } else { 798 parseCompilerOption("dalvik.vm.image-dex2oat-filter", dex2oatImageCompilerFilterBuf, 799 "--compiler-filter=", "-Ximage-compiler-option"); 800 } 801 802 // If there is a boot profile, it takes precedence over the image and preloaded classes. 803 if (hasFile("/system/etc/boot-image.prof")) { 804 addOption("-Ximage-compiler-option"); 805 addOption("--profile-file=/system/etc/boot-image.prof"); 806 addOption("-Ximage-compiler-option"); 807 addOption("--compiler-filter=speed-profile"); 808 } else { 809 // Make sure there is a preloaded-classes file. 810 if (!hasFile("/system/etc/preloaded-classes")) { 811 ALOGE("Missing preloaded-classes file, /system/etc/preloaded-classes not found: %s\n", 812 strerror(errno)); 813 return -1; 814 } 815 addOption("-Ximage-compiler-option"); 816 addOption("--image-classes=/system/etc/preloaded-classes"); 817 818 // If there is a compiled-classes file, push it. 819 if (hasFile("/system/etc/compiled-classes")) { 820 addOption("-Ximage-compiler-option"); 821 addOption("--compiled-classes=/system/etc/compiled-classes"); 822 } 823 824 // If there is a dirty-image-objects file, push it. 825 if (hasFile("/system/etc/dirty-image-objects")) { 826 addOption("-Ximage-compiler-option"); 827 addOption("--dirty-image-objects=/system/etc/dirty-image-objects"); 828 } 829 } 830 831 property_get("dalvik.vm.image-dex2oat-flags", dex2oatImageFlagsBuf, ""); 832 parseExtraOpts(dex2oatImageFlagsBuf, "-Ximage-compiler-option"); 833 834 // Extra options for DexClassLoader. 835 parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xms", dex2oatXmsFlagsBuf, 836 "-Xms", "-Xcompiler-option"); 837 parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xmx", dex2oatXmxFlagsBuf, 838 "-Xmx", "-Xcompiler-option"); 839 if (skip_compilation) { 840 addOption("-Xcompiler-option"); 841 addOption("--compiler-filter=assume-verified"); 842 843 // We skip compilation when a minimal runtime is brought up for decryption. In that case 844 // /data is temporarily backed by a tmpfs, which is usually small. 845 // If the system image contains prebuilts, they will be relocated into the tmpfs. In this 846 // specific situation it is acceptable to *not* relocate and run out of the prebuilts 847 // directly instead. 848 addOption("--runtime-arg"); 849 addOption("-Xnorelocate"); 850 } else { 851 parseCompilerOption("dalvik.vm.dex2oat-filter", dex2oatCompilerFilterBuf, 852 "--compiler-filter=", "-Xcompiler-option"); 853 } 854 parseCompilerOption("dalvik.vm.dex2oat-threads", dex2oatThreadsBuf, "-j", "-Xcompiler-option"); 855 parseCompilerOption("dalvik.vm.image-dex2oat-threads", dex2oatThreadsImageBuf, "-j", 856 "-Ximage-compiler-option"); 857 858 // The runtime will compile a boot image, when necessary, not using installd. Thus, we need to 859 // pass the instruction-set-features/variant as an image-compiler-option. 860 // TODO: Find a better way for the instruction-set. 861#if defined(__arm__) 862 constexpr const char* instruction_set = "arm"; 863#elif defined(__aarch64__) 864 constexpr const char* instruction_set = "arm64"; 865#elif defined(__mips__) && !defined(__LP64__) 866 constexpr const char* instruction_set = "mips"; 867#elif defined(__mips__) && defined(__LP64__) 868 constexpr const char* instruction_set = "mips64"; 869#elif defined(__i386__) 870 constexpr const char* instruction_set = "x86"; 871#elif defined(__x86_64__) 872 constexpr const char* instruction_set = "x86_64"; 873#else 874 constexpr const char* instruction_set = "unknown"; 875#endif 876 // Note: it is OK to reuse the buffer, as the values are exactly the same between 877 // * compiler-option, used for runtime compilation (DexClassLoader) 878 // * image-compiler-option, used for boot-image compilation on device 879 880 // Copy the variant. 881 sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set); 882 parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant, 883 "--instruction-set-variant=", "-Ximage-compiler-option"); 884 parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant, 885 "--instruction-set-variant=", "-Xcompiler-option"); 886 // Copy the features. 887 sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set); 888 parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features, 889 "--instruction-set-features=", "-Ximage-compiler-option"); 890 parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features, 891 "--instruction-set-features=", "-Xcompiler-option"); 892 893 894 property_get("dalvik.vm.dex2oat-flags", dex2oatFlagsBuf, ""); 895 parseExtraOpts(dex2oatFlagsBuf, "-Xcompiler-option"); 896 897 /* extra options; parse this late so it overrides others */ 898 property_get("dalvik.vm.extra-opts", extraOptsBuf, ""); 899 parseExtraOpts(extraOptsBuf, NULL); 900 901 /* Set the properties for locale */ 902 { 903 strcpy(localeOption, "-Duser.locale="); 904 const std::string locale = readLocale(); 905 strncat(localeOption, locale.c_str(), PROPERTY_VALUE_MAX); 906 addOption(localeOption); 907 } 908 909 // Trace files are stored in /data/misc/trace which is writable only in debug mode. 910 property_get("ro.debuggable", propBuf, "0"); 911 if (strcmp(propBuf, "1") == 0) { 912 property_get("dalvik.vm.method-trace", propBuf, "false"); 913 if (strcmp(propBuf, "true") == 0) { 914 addOption("-Xmethod-trace"); 915 parseRuntimeOption("dalvik.vm.method-trace-file", 916 methodTraceFileBuf, 917 "-Xmethod-trace-file:"); 918 parseRuntimeOption("dalvik.vm.method-trace-file-siz", 919 methodTraceFileSizeBuf, 920 "-Xmethod-trace-file-size:"); 921 property_get("dalvik.vm.method-trace-stream", propBuf, "false"); 922 if (strcmp(propBuf, "true") == 0) { 923 addOption("-Xmethod-trace-stream"); 924 } 925 } 926 } 927 928 // Native bridge library. "0" means that native bridge is disabled. 929 property_get("ro.dalvik.vm.native.bridge", propBuf, ""); 930 if (propBuf[0] == '\0') { 931 ALOGW("ro.dalvik.vm.native.bridge is not expected to be empty"); 932 } else if (strcmp(propBuf, "0") != 0) { 933 snprintf(nativeBridgeLibrary, sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX, 934 "-XX:NativeBridge=%s", propBuf); 935 addOption(nativeBridgeLibrary); 936 } 937 938#if defined(__LP64__) 939 const char* cpu_abilist_property_name = "ro.product.cpu.abilist64"; 940#else 941 const char* cpu_abilist_property_name = "ro.product.cpu.abilist32"; 942#endif // defined(__LP64__) 943 property_get(cpu_abilist_property_name, propBuf, ""); 944 if (propBuf[0] == '\0') { 945 ALOGE("%s is not expected to be empty", cpu_abilist_property_name); 946 return -1; 947 } 948 snprintf(cpuAbiListBuf, sizeof(cpuAbiListBuf), "--cpu-abilist=%s", propBuf); 949 addOption(cpuAbiListBuf); 950 951 // Dalvik-cache pruning counter. 952 parseRuntimeOption("dalvik.vm.zygote.max-boot-retry", cachePruneBuf, 953 "-Xzygote-max-boot-retry="); 954 955 /* 956 * When running with debug.generate-debug-info, add --generate-debug-info to 957 * the compiler options so that the boot image, if it is compiled on device, 958 * will include native debugging information. 959 */ 960 property_get("debug.generate-debug-info", propBuf, ""); 961 if (strcmp(propBuf, "true") == 0) { 962 addOption("-Xcompiler-option"); 963 addOption("--generate-debug-info"); 964 addOption("-Ximage-compiler-option"); 965 addOption("--generate-debug-info"); 966 } 967 968 /* 969 * Retrieve the build fingerprint and provide it to the runtime. That way, ANR dumps will 970 * contain the fingerprint and can be parsed. 971 */ 972 parseRuntimeOption("ro.build.fingerprint", fingerprintBuf, "-Xfingerprint:"); 973 974 initArgs.version = JNI_VERSION_1_4; 975 initArgs.options = mOptions.editArray(); 976 initArgs.nOptions = mOptions.size(); 977 initArgs.ignoreUnrecognized = JNI_FALSE; 978 979 /* 980 * Initialize the VM. 981 * 982 * The JavaVM* is essentially per-process, and the JNIEnv* is per-thread. 983 * If this call succeeds, the VM is ready, and we can start issuing 984 * JNI calls. 985 */ 986 if (JNI_CreateJavaVM(pJavaVM, pEnv, &initArgs) < 0) { 987 ALOGE("JNI_CreateJavaVM failed\n"); 988 return -1; 989 } 990 991 return 0; 992} 993 994char* AndroidRuntime::toSlashClassName(const char* className) 995{ 996 char* result = strdup(className); 997 for (char* cp = result; *cp != '\0'; cp++) { 998 if (*cp == '.') { 999 *cp = '/'; 1000 } 1001 } 1002 return result; 1003} 1004 1005/** Create a Java string from an ASCII or Latin-1 string */ 1006jstring AndroidRuntime::NewStringLatin1(JNIEnv* env, const char* bytes) { 1007 if (!bytes) return NULL; 1008 int length = strlen(bytes); 1009 jchar* buffer = (jchar *)alloca(length * sizeof(jchar)); 1010 if (!buffer) return NULL; 1011 jchar* chp = buffer; 1012 for (int i = 0; i < length; i++) { 1013 *chp++ = *bytes++; 1014 } 1015 return env->NewString(buffer, length); 1016} 1017 1018 1019/* 1020 * Start the Android runtime. This involves starting the virtual machine 1021 * and calling the "static void main(String[] args)" method in the class 1022 * named by "className". 1023 * 1024 * Passes the main function two arguments, the class name and the specified 1025 * options string. 1026 */ 1027void AndroidRuntime::start(const char* className, const Vector<String8>& options, bool zygote) 1028{ 1029 ALOGD(">>>>>> START %s uid %d <<<<<<\n", 1030 className != NULL ? className : "(unknown)", getuid()); 1031 1032 static const String8 startSystemServer("start-system-server"); 1033 1034 /* 1035 * 'startSystemServer == true' means runtime is obsolete and not run from 1036 * init.rc anymore, so we print out the boot start event here. 1037 */ 1038 for (size_t i = 0; i < options.size(); ++i) { 1039 if (options[i] == startSystemServer) { 1040 /* track our progress through the boot sequence */ 1041 const int LOG_BOOT_PROGRESS_START = 3000; 1042 LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START, ns2ms(systemTime(SYSTEM_TIME_MONOTONIC))); 1043 } 1044 } 1045 1046 const char* rootDir = getenv("ANDROID_ROOT"); 1047 if (rootDir == NULL) { 1048 rootDir = "/system"; 1049 if (!hasDir("/system")) { 1050 LOG_FATAL("No root directory specified, and /android does not exist."); 1051 return; 1052 } 1053 setenv("ANDROID_ROOT", rootDir, 1); 1054 } 1055 1056 //const char* kernelHack = getenv("LD_ASSUME_KERNEL"); 1057 //ALOGD("Found LD_ASSUME_KERNEL='%s'\n", kernelHack); 1058 1059 /* start the virtual machine */ 1060 JniInvocation jni_invocation; 1061 jni_invocation.Init(NULL); 1062 JNIEnv* env; 1063 if (startVm(&mJavaVM, &env, zygote) != 0) { 1064 return; 1065 } 1066 onVmCreated(env); 1067 1068 /* 1069 * Register android functions. 1070 */ 1071 if (startReg(env) < 0) { 1072 ALOGE("Unable to register all android natives\n"); 1073 return; 1074 } 1075 1076 /* 1077 * We want to call main() with a String array with arguments in it. 1078 * At present we have two arguments, the class name and an option string. 1079 * Create an array to hold them. 1080 */ 1081 jclass stringClass; 1082 jobjectArray strArray; 1083 jstring classNameStr; 1084 1085 stringClass = env->FindClass("java/lang/String"); 1086 assert(stringClass != NULL); 1087 strArray = env->NewObjectArray(options.size() + 1, stringClass, NULL); 1088 assert(strArray != NULL); 1089 classNameStr = env->NewStringUTF(className); 1090 assert(classNameStr != NULL); 1091 env->SetObjectArrayElement(strArray, 0, classNameStr); 1092 1093 for (size_t i = 0; i < options.size(); ++i) { 1094 jstring optionsStr = env->NewStringUTF(options.itemAt(i).string()); 1095 assert(optionsStr != NULL); 1096 env->SetObjectArrayElement(strArray, i + 1, optionsStr); 1097 } 1098 1099 /* 1100 * Start VM. This thread becomes the main thread of the VM, and will 1101 * not return until the VM exits. 1102 */ 1103 char* slashClassName = toSlashClassName(className != NULL ? className : ""); 1104 jclass startClass = env->FindClass(slashClassName); 1105 if (startClass == NULL) { 1106 ALOGE("JavaVM unable to locate class '%s'\n", slashClassName); 1107 /* keep going */ 1108 } else { 1109 jmethodID startMeth = env->GetStaticMethodID(startClass, "main", 1110 "([Ljava/lang/String;)V"); 1111 if (startMeth == NULL) { 1112 ALOGE("JavaVM unable to find main() in '%s'\n", className); 1113 /* keep going */ 1114 } else { 1115 env->CallStaticVoidMethod(startClass, startMeth, strArray); 1116 1117#if 0 1118 if (env->ExceptionCheck()) 1119 threadExitUncaughtException(env); 1120#endif 1121 } 1122 } 1123 free(slashClassName); 1124 1125 ALOGD("Shutting down VM\n"); 1126 if (mJavaVM->DetachCurrentThread() != JNI_OK) 1127 ALOGW("Warning: unable to detach main thread\n"); 1128 if (mJavaVM->DestroyJavaVM() != 0) 1129 ALOGW("Warning: VM did not shut down cleanly\n"); 1130} 1131 1132void AndroidRuntime::exit(int code) 1133{ 1134 if (mExitWithoutCleanup) { 1135 ALOGI("VM exiting with result code %d, cleanup skipped.", code); 1136 ::_exit(code); 1137 } else { 1138 ALOGI("VM exiting with result code %d.", code); 1139 onExit(code); 1140 ::exit(code); 1141 } 1142} 1143 1144void AndroidRuntime::onVmCreated(JNIEnv* env) 1145{ 1146 // If AndroidRuntime had anything to do here, we'd have done it in 'start'. 1147} 1148 1149/* 1150 * Get the JNIEnv pointer for this thread. 1151 * 1152 * Returns NULL if the slot wasn't allocated or populated. 1153 */ 1154/*static*/ JNIEnv* AndroidRuntime::getJNIEnv() 1155{ 1156 JNIEnv* env; 1157 JavaVM* vm = AndroidRuntime::getJavaVM(); 1158 assert(vm != NULL); 1159 1160 if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) 1161 return NULL; 1162 return env; 1163} 1164 1165/* 1166 * Makes the current thread visible to the VM. 1167 * 1168 * The JNIEnv pointer returned is only valid for the current thread, and 1169 * thus must be tucked into thread-local storage. 1170 */ 1171static int javaAttachThread(const char* threadName, JNIEnv** pEnv) 1172{ 1173 JavaVMAttachArgs args; 1174 JavaVM* vm; 1175 jint result; 1176 1177 vm = AndroidRuntime::getJavaVM(); 1178 assert(vm != NULL); 1179 1180 args.version = JNI_VERSION_1_4; 1181 args.name = (char*) threadName; 1182 args.group = NULL; 1183 1184 result = vm->AttachCurrentThread(pEnv, (void*) &args); 1185 if (result != JNI_OK) 1186 ALOGI("NOTE: attach of thread '%s' failed\n", threadName); 1187 1188 return result; 1189} 1190 1191/* 1192 * Detach the current thread from the set visible to the VM. 1193 */ 1194static int javaDetachThread(void) 1195{ 1196 JavaVM* vm; 1197 jint result; 1198 1199 vm = AndroidRuntime::getJavaVM(); 1200 assert(vm != NULL); 1201 1202 result = vm->DetachCurrentThread(); 1203 if (result != JNI_OK) 1204 ALOGE("ERROR: thread detach failed\n"); 1205 return result; 1206} 1207 1208/* 1209 * When starting a native thread that will be visible from the VM, we 1210 * bounce through this to get the right attach/detach action. 1211 * Note that this function calls free(args) 1212 */ 1213/*static*/ int AndroidRuntime::javaThreadShell(void* args) { 1214 void* start = ((void**)args)[0]; 1215 void* userData = ((void **)args)[1]; 1216 char* name = (char*) ((void **)args)[2]; // we own this storage 1217 free(args); 1218 JNIEnv* env; 1219 int result; 1220 1221 /* hook us into the VM */ 1222 if (javaAttachThread(name, &env) != JNI_OK) 1223 return -1; 1224 1225 /* start the thread running */ 1226 result = (*(android_thread_func_t)start)(userData); 1227 1228 /* unhook us */ 1229 javaDetachThread(); 1230 free(name); 1231 1232 return result; 1233} 1234 1235/* 1236 * This is invoked from androidCreateThreadEtc() via the callback 1237 * set with androidSetCreateThreadFunc(). 1238 * 1239 * We need to create the new thread in such a way that it gets hooked 1240 * into the VM before it really starts executing. 1241 */ 1242/*static*/ int AndroidRuntime::javaCreateThreadEtc( 1243 android_thread_func_t entryFunction, 1244 void* userData, 1245 const char* threadName, 1246 int32_t threadPriority, 1247 size_t threadStackSize, 1248 android_thread_id_t* threadId) 1249{ 1250 void** args = (void**) malloc(3 * sizeof(void*)); // javaThreadShell must free 1251 int result; 1252 1253 LOG_ALWAYS_FATAL_IF(threadName == nullptr, "threadName not provided to javaCreateThreadEtc"); 1254 1255 args[0] = (void*) entryFunction; 1256 args[1] = userData; 1257 args[2] = (void*) strdup(threadName); // javaThreadShell must free 1258 1259 result = androidCreateRawThreadEtc(AndroidRuntime::javaThreadShell, args, 1260 threadName, threadPriority, threadStackSize, threadId); 1261 return result; 1262} 1263 1264/* 1265 * Create a thread that is visible from the VM. 1266 * 1267 * This is called from elsewhere in the library. 1268 */ 1269/*static*/ android_thread_id_t AndroidRuntime::createJavaThread(const char* name, 1270 void (*start)(void *), void* arg) 1271{ 1272 android_thread_id_t threadId = 0; 1273 javaCreateThreadEtc((android_thread_func_t) start, arg, name, 1274 ANDROID_PRIORITY_DEFAULT, 0, &threadId); 1275 return threadId; 1276} 1277 1278#if 0 1279static void quickTest(void* arg) 1280{ 1281 const char* str = (const char*) arg; 1282 1283 printf("In quickTest: %s\n", str); 1284} 1285#endif 1286 1287#ifdef NDEBUG 1288 #define REG_JNI(name) { name } 1289 struct RegJNIRec { 1290 int (*mProc)(JNIEnv*); 1291 }; 1292#else 1293 #define REG_JNI(name) { name, #name } 1294 struct RegJNIRec { 1295 int (*mProc)(JNIEnv*); 1296 const char* mName; 1297 }; 1298#endif 1299 1300typedef void (*RegJAMProc)(); 1301 1302static int register_jni_procs(const RegJNIRec array[], size_t count, JNIEnv* env) 1303{ 1304 for (size_t i = 0; i < count; i++) { 1305 if (array[i].mProc(env) < 0) { 1306#ifndef NDEBUG 1307 ALOGD("----------!!! %s failed to load\n", array[i].mName); 1308#endif 1309 return -1; 1310 } 1311 } 1312 return 0; 1313} 1314 1315static const RegJNIRec gRegJNI[] = { 1316 REG_JNI(register_com_android_internal_os_RuntimeInit), 1317 REG_JNI(register_com_android_internal_os_ZygoteInit_nativeZygoteInit), 1318 REG_JNI(register_android_os_SystemClock), 1319 REG_JNI(register_android_util_EventLog), 1320 REG_JNI(register_android_util_Log), 1321 REG_JNI(register_android_util_MemoryIntArray), 1322 REG_JNI(register_android_util_PathParser), 1323 REG_JNI(register_android_app_admin_SecurityLog), 1324 REG_JNI(register_android_content_AssetManager), 1325 REG_JNI(register_android_content_StringBlock), 1326 REG_JNI(register_android_content_XmlBlock), 1327 REG_JNI(register_android_text_AndroidCharacter), 1328 REG_JNI(register_android_text_StaticLayout), 1329 REG_JNI(register_android_text_AndroidBidi), 1330 REG_JNI(register_android_view_InputDevice), 1331 REG_JNI(register_android_view_KeyCharacterMap), 1332 REG_JNI(register_android_os_Process), 1333 REG_JNI(register_android_os_SystemProperties), 1334 REG_JNI(register_android_os_Binder), 1335 REG_JNI(register_android_os_Parcel), 1336 REG_JNI(register_android_os_HwBinder), 1337 REG_JNI(register_android_os_HwBlob), 1338 REG_JNI(register_android_os_HwParcel), 1339 REG_JNI(register_android_os_HwRemoteBinder), 1340 REG_JNI(register_android_os_VintfObject), 1341 REG_JNI(register_android_os_VintfRuntimeInfo), 1342 REG_JNI(register_android_nio_utils), 1343 REG_JNI(register_android_graphics_Canvas), 1344 REG_JNI(register_android_graphics_Graphics), 1345 REG_JNI(register_android_view_DisplayEventReceiver), 1346 REG_JNI(register_android_view_RenderNode), 1347 REG_JNI(register_android_view_RenderNodeAnimator), 1348 REG_JNI(register_android_view_DisplayListCanvas), 1349 REG_JNI(register_android_view_HardwareLayer), 1350 REG_JNI(register_android_view_ThreadedRenderer), 1351 REG_JNI(register_android_view_Surface), 1352 REG_JNI(register_android_view_SurfaceControl), 1353 REG_JNI(register_android_view_SurfaceSession), 1354 REG_JNI(register_android_view_TextureView), 1355 REG_JNI(register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper), 1356 REG_JNI(register_com_google_android_gles_jni_EGLImpl), 1357 REG_JNI(register_com_google_android_gles_jni_GLImpl), 1358 REG_JNI(register_android_opengl_jni_EGL14), 1359 REG_JNI(register_android_opengl_jni_EGLExt), 1360 REG_JNI(register_android_opengl_jni_GLES10), 1361 REG_JNI(register_android_opengl_jni_GLES10Ext), 1362 REG_JNI(register_android_opengl_jni_GLES11), 1363 REG_JNI(register_android_opengl_jni_GLES11Ext), 1364 REG_JNI(register_android_opengl_jni_GLES20), 1365 REG_JNI(register_android_opengl_jni_GLES30), 1366 REG_JNI(register_android_opengl_jni_GLES31), 1367 REG_JNI(register_android_opengl_jni_GLES31Ext), 1368 REG_JNI(register_android_opengl_jni_GLES32), 1369 1370 REG_JNI(register_android_graphics_Bitmap), 1371 REG_JNI(register_android_graphics_BitmapFactory), 1372 REG_JNI(register_android_graphics_BitmapRegionDecoder), 1373 REG_JNI(register_android_graphics_Camera), 1374 REG_JNI(register_android_graphics_CreateJavaOutputStreamAdaptor), 1375 REG_JNI(register_android_graphics_CanvasProperty), 1376 REG_JNI(register_android_graphics_ColorFilter), 1377 REG_JNI(register_android_graphics_DrawFilter), 1378 REG_JNI(register_android_graphics_FontFamily), 1379 REG_JNI(register_android_graphics_GraphicBuffer), 1380 REG_JNI(register_android_graphics_Interpolator), 1381 REG_JNI(register_android_graphics_MaskFilter), 1382 REG_JNI(register_android_graphics_Matrix), 1383 REG_JNI(register_android_graphics_Movie), 1384 REG_JNI(register_android_graphics_NinePatch), 1385 REG_JNI(register_android_graphics_Paint), 1386 REG_JNI(register_android_graphics_Path), 1387 REG_JNI(register_android_graphics_PathMeasure), 1388 REG_JNI(register_android_graphics_PathEffect), 1389 REG_JNI(register_android_graphics_Picture), 1390 REG_JNI(register_android_graphics_Region), 1391 REG_JNI(register_android_graphics_Shader), 1392 REG_JNI(register_android_graphics_SurfaceTexture), 1393 REG_JNI(register_android_graphics_Typeface), 1394 REG_JNI(register_android_graphics_YuvImage), 1395 REG_JNI(register_android_graphics_drawable_AnimatedVectorDrawable), 1396 REG_JNI(register_android_graphics_drawable_VectorDrawable), 1397 REG_JNI(register_android_graphics_pdf_PdfDocument), 1398 REG_JNI(register_android_graphics_pdf_PdfEditor), 1399 REG_JNI(register_android_graphics_pdf_PdfRenderer), 1400 1401 REG_JNI(register_android_database_CursorWindow), 1402 REG_JNI(register_android_database_SQLiteConnection), 1403 REG_JNI(register_android_database_SQLiteGlobal), 1404 REG_JNI(register_android_database_SQLiteDebug), 1405 REG_JNI(register_android_os_Debug), 1406 REG_JNI(register_android_os_FileObserver), 1407 REG_JNI(register_android_os_GraphicsEnvironment), 1408 REG_JNI(register_android_os_MessageQueue), 1409 REG_JNI(register_android_os_SELinux), 1410 REG_JNI(register_android_os_seccomp), 1411 REG_JNI(register_android_os_Trace), 1412 REG_JNI(register_android_os_UEventObserver), 1413 REG_JNI(register_android_net_LocalSocketImpl), 1414 REG_JNI(register_android_net_NetworkUtils), 1415 REG_JNI(register_android_net_TrafficStats), 1416 REG_JNI(register_android_os_MemoryFile), 1417 REG_JNI(register_android_os_SharedMemory), 1418 REG_JNI(register_com_android_internal_os_ClassLoaderFactory), 1419 REG_JNI(register_com_android_internal_os_Zygote), 1420 REG_JNI(register_com_android_internal_os_ZygoteInit), 1421 REG_JNI(register_com_android_internal_util_VirtualRefBasePtr), 1422 REG_JNI(register_android_hardware_Camera), 1423 REG_JNI(register_android_hardware_camera2_CameraMetadata), 1424 REG_JNI(register_android_hardware_camera2_legacy_LegacyCameraDevice), 1425 REG_JNI(register_android_hardware_camera2_legacy_PerfMeasurement), 1426 REG_JNI(register_android_hardware_camera2_DngCreator), 1427 REG_JNI(register_android_hardware_HardwareBuffer), 1428 REG_JNI(register_android_hardware_SensorManager), 1429 REG_JNI(register_android_hardware_SerialPort), 1430 REG_JNI(register_android_hardware_SoundTrigger), 1431 REG_JNI(register_android_hardware_UsbDevice), 1432 REG_JNI(register_android_hardware_UsbDeviceConnection), 1433 REG_JNI(register_android_hardware_UsbRequest), 1434 REG_JNI(register_android_hardware_location_ActivityRecognitionHardware), 1435 REG_JNI(register_android_media_AudioRecord), 1436 REG_JNI(register_android_media_AudioSystem), 1437 REG_JNI(register_android_media_AudioTrack), 1438 REG_JNI(register_android_media_JetPlayer), 1439 REG_JNI(register_android_media_RemoteDisplay), 1440 REG_JNI(register_android_media_ToneGenerator), 1441 1442 REG_JNI(register_android_opengl_classes), 1443 REG_JNI(register_android_server_NetworkManagementSocketTagger), 1444 REG_JNI(register_android_ddm_DdmHandleNativeHeap), 1445 REG_JNI(register_android_backup_BackupDataInput), 1446 REG_JNI(register_android_backup_BackupDataOutput), 1447 REG_JNI(register_android_backup_FileBackupHelperBase), 1448 REG_JNI(register_android_backup_BackupHelperDispatcher), 1449 REG_JNI(register_android_app_backup_FullBackup), 1450 REG_JNI(register_android_app_Activity), 1451 REG_JNI(register_android_app_ActivityThread), 1452 REG_JNI(register_android_app_ApplicationLoaders), 1453 REG_JNI(register_android_app_NativeActivity), 1454 REG_JNI(register_android_util_jar_StrictJarFile), 1455 REG_JNI(register_android_view_InputChannel), 1456 REG_JNI(register_android_view_InputEventReceiver), 1457 REG_JNI(register_android_view_InputEventSender), 1458 REG_JNI(register_android_view_InputQueue), 1459 REG_JNI(register_android_view_KeyEvent), 1460 REG_JNI(register_android_view_MotionEvent), 1461 REG_JNI(register_android_view_PointerIcon), 1462 REG_JNI(register_android_view_VelocityTracker), 1463 1464 REG_JNI(register_android_content_res_ObbScanner), 1465 REG_JNI(register_android_content_res_Configuration), 1466 1467 REG_JNI(register_android_animation_PropertyValuesHolder), 1468 REG_JNI(register_com_android_internal_content_NativeLibraryHelper), 1469 REG_JNI(register_com_android_internal_net_NetworkStatsFactory), 1470 REG_JNI(register_com_android_internal_os_FuseAppLoop), 1471}; 1472 1473/* 1474 * Register android native functions with the VM. 1475 */ 1476/*static*/ int AndroidRuntime::startReg(JNIEnv* env) 1477{ 1478 ATRACE_NAME("RegisterAndroidNatives"); 1479 /* 1480 * This hook causes all future threads created in this process to be 1481 * attached to the JavaVM. (This needs to go away in favor of JNI 1482 * Attach calls.) 1483 */ 1484 androidSetCreateThreadFunc((android_create_thread_fn) javaCreateThreadEtc); 1485 1486 ALOGV("--- registering native functions ---\n"); 1487 1488 /* 1489 * Every "register" function calls one or more things that return 1490 * a local reference (e.g. FindClass). Because we haven't really 1491 * started the VM yet, they're all getting stored in the base frame 1492 * and never released. Use Push/Pop to manage the storage. 1493 */ 1494 env->PushLocalFrame(200); 1495 1496 if (register_jni_procs(gRegJNI, NELEM(gRegJNI), env) < 0) { 1497 env->PopLocalFrame(NULL); 1498 return -1; 1499 } 1500 env->PopLocalFrame(NULL); 1501 1502 //createJavaThread("fubar", quickTest, (void*) "hello"); 1503 1504 return 0; 1505} 1506 1507AndroidRuntime* AndroidRuntime::getRuntime() 1508{ 1509 return gCurRuntime; 1510} 1511 1512/** 1513 * Used by surface flinger's DdmConnection to register native methods from 1514 * the framework. 1515 */ 1516extern "C" jint registerFrameworkNatives(JNIEnv* env) { 1517 return register_jni_procs(gRegJNI, NELEM(gRegJNI), env); 1518} 1519} // namespace android 1520