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