AndroidRuntime.cpp revision 5fa6c7424a041e78a8d4976ec52ef6f684fa3270 
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 LOG_TAG "AndroidRuntime"
18//#define LOG_NDEBUG 0
19
20#include <android_runtime/AndroidRuntime.h>
21#include <binder/IBinder.h>
22#include <binder/IPCThreadState.h>
23#include <binder/IServiceManager.h>
24#include <utils/Log.h>
25#include <utils/misc.h>
26#include <binder/Parcel.h>
27#include <utils/threads.h>
28#include <cutils/properties.h>
29
30#include <SkGraphics.h>
31#include <SkImageDecoder.h>
32
33#include "jni.h"
34#include "JNIHelp.h"
35#include "JniInvocation.h"
36#include "android_util_Binder.h"
37
38#include <stdio.h>
39#include <signal.h>
40#include <sys/stat.h>
41#include <sys/types.h>
42#include <signal.h>
43#include <dirent.h>
44#include <assert.h>
45
46#include <string>
47#include <vector>
48
49
50using namespace android;
51
52extern int register_android_os_Binder(JNIEnv* env);
53extern int register_android_os_Process(JNIEnv* env);
54extern int register_android_graphics_Bitmap(JNIEnv*);
55extern int register_android_graphics_BitmapFactory(JNIEnv*);
56extern int register_android_graphics_BitmapRegionDecoder(JNIEnv*);
57extern int register_android_graphics_Camera(JNIEnv* env);
58extern int register_android_graphics_CreateJavaOutputStreamAdaptor(JNIEnv* env);
59extern int register_android_graphics_Graphics(JNIEnv* env);
60extern int register_android_graphics_Interpolator(JNIEnv* env);
61extern int register_android_graphics_MaskFilter(JNIEnv* env);
62extern int register_android_graphics_Movie(JNIEnv* env);
63extern int register_android_graphics_NinePatch(JNIEnv*);
64extern int register_android_graphics_PathEffect(JNIEnv* env);
65extern int register_android_graphics_Shader(JNIEnv* env);
66extern int register_android_graphics_Typeface(JNIEnv* env);
67extern int register_android_graphics_YuvImage(JNIEnv* env);
68
69extern int register_com_google_android_gles_jni_EGLImpl(JNIEnv* env);
70extern int register_com_google_android_gles_jni_GLImpl(JNIEnv* env);
71extern int register_android_opengl_jni_EGL14(JNIEnv* env);
72extern int register_android_opengl_jni_EGLExt(JNIEnv* env);
73extern int register_android_opengl_jni_GLES10(JNIEnv* env);
74extern int register_android_opengl_jni_GLES10Ext(JNIEnv* env);
75extern int register_android_opengl_jni_GLES11(JNIEnv* env);
76extern int register_android_opengl_jni_GLES11Ext(JNIEnv* env);
77extern int register_android_opengl_jni_GLES20(JNIEnv* env);
78extern int register_android_opengl_jni_GLES30(JNIEnv* env);
79extern int register_android_opengl_jni_GLES31(JNIEnv* env);
80extern int register_android_opengl_jni_GLES31Ext(JNIEnv* env);
81
82extern int register_android_hardware_Camera(JNIEnv *env);
83extern int register_android_hardware_camera2_CameraMetadata(JNIEnv *env);
84extern int register_android_hardware_camera2_legacy_LegacyCameraDevice(JNIEnv *env);
85extern int register_android_hardware_camera2_legacy_PerfMeasurement(JNIEnv *env);
86extern int register_android_hardware_camera2_DngCreator(JNIEnv *env);
87extern int register_android_hardware_Radio(JNIEnv *env);
88extern int register_android_hardware_SensorManager(JNIEnv *env);
89extern int register_android_hardware_SerialPort(JNIEnv *env);
90extern int register_android_hardware_SoundTrigger(JNIEnv *env);
91extern int register_android_hardware_UsbDevice(JNIEnv *env);
92extern int register_android_hardware_UsbDeviceConnection(JNIEnv *env);
93extern int register_android_hardware_UsbRequest(JNIEnv *env);
94extern int register_android_hardware_location_ActivityRecognitionHardware(JNIEnv* env);
95
96extern int register_android_media_AudioRecord(JNIEnv *env);
97extern int register_android_media_AudioSystem(JNIEnv *env);
98extern int register_android_media_AudioTrack(JNIEnv *env);
99extern int register_android_media_JetPlayer(JNIEnv *env);
100extern int register_android_media_ToneGenerator(JNIEnv *env);
101
102namespace android {
103
104/*
105 * JNI-based registration functions.  Note these are properly contained in
106 * namespace android.
107 */
108extern int register_android_content_AssetManager(JNIEnv* env);
109extern int register_android_util_EventLog(JNIEnv* env);
110extern int register_android_util_Log(JNIEnv* env);
111extern int register_android_content_StringBlock(JNIEnv* env);
112extern int register_android_content_XmlBlock(JNIEnv* env);
113extern int register_android_graphics_Canvas(JNIEnv* env);
114extern int register_android_graphics_CanvasProperty(JNIEnv* env);
115extern int register_android_graphics_ColorFilter(JNIEnv* env);
116extern int register_android_graphics_DrawFilter(JNIEnv* env);
117extern int register_android_graphics_FontFamily(JNIEnv* env);
118extern int register_android_graphics_LayerRasterizer(JNIEnv*);
119extern int register_android_graphics_Matrix(JNIEnv* env);
120extern int register_android_graphics_Paint(JNIEnv* env);
121extern int register_android_graphics_Path(JNIEnv* env);
122extern int register_android_graphics_PathMeasure(JNIEnv* env);
123extern int register_android_graphics_Picture(JNIEnv*);
124extern int register_android_graphics_PorterDuff(JNIEnv* env);
125extern int register_android_graphics_Rasterizer(JNIEnv* env);
126extern int register_android_graphics_Region(JNIEnv* env);
127extern int register_android_graphics_SurfaceTexture(JNIEnv* env);
128extern int register_android_graphics_Xfermode(JNIEnv* env);
129extern int register_android_graphics_pdf_PdfDocument(JNIEnv* env);
130extern int register_android_graphics_pdf_PdfEditor(JNIEnv* env);
131extern int register_android_graphics_pdf_PdfRenderer(JNIEnv* env);
132extern int register_android_view_DisplayEventReceiver(JNIEnv* env);
133extern int register_android_view_DisplayListCanvas(JNIEnv* env);
134extern int register_android_view_GraphicBuffer(JNIEnv* env);
135extern int register_android_view_HardwareLayer(JNIEnv* env);
136extern int register_android_view_RenderNode(JNIEnv* env);
137extern int register_android_view_RenderNodeAnimator(JNIEnv* env);
138extern int register_android_view_Surface(JNIEnv* env);
139extern int register_android_view_SurfaceControl(JNIEnv* env);
140extern int register_android_view_SurfaceSession(JNIEnv* env);
141extern int register_android_view_TextureView(JNIEnv* env);
142extern int register_android_view_ThreadedRenderer(JNIEnv* env);
143extern int register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper(JNIEnv *env);
144extern int register_android_database_CursorWindow(JNIEnv* env);
145extern int register_android_database_SQLiteConnection(JNIEnv* env);
146extern int register_android_database_SQLiteGlobal(JNIEnv* env);
147extern int register_android_database_SQLiteDebug(JNIEnv* env);
148extern int register_android_nio_utils(JNIEnv* env);
149extern int register_android_os_Debug(JNIEnv* env);
150extern int register_android_os_MessageQueue(JNIEnv* env);
151extern int register_android_os_Parcel(JNIEnv* env);
152extern int register_android_os_SELinux(JNIEnv* env);
153extern int register_android_os_SystemProperties(JNIEnv *env);
154extern int register_android_os_SystemClock(JNIEnv* env);
155extern int register_android_os_Trace(JNIEnv* env);
156extern int register_android_os_FileObserver(JNIEnv *env);
157extern int register_android_os_UEventObserver(JNIEnv* env);
158extern int register_android_os_MemoryFile(JNIEnv* env);
159extern int register_android_net_LocalSocketImpl(JNIEnv* env);
160extern int register_android_net_NetworkUtils(JNIEnv* env);
161extern int register_android_net_TrafficStats(JNIEnv* env);
162extern int register_android_text_AndroidCharacter(JNIEnv *env);
163extern int register_android_text_StaticLayout(JNIEnv *env);
164extern int register_android_text_AndroidBidi(JNIEnv *env);
165extern int register_android_opengl_classes(JNIEnv *env);
166extern int register_android_ddm_DdmHandleNativeHeap(JNIEnv *env);
167extern int register_android_server_NetworkManagementSocketTagger(JNIEnv* env);
168extern int register_android_backup_BackupDataInput(JNIEnv *env);
169extern int register_android_backup_BackupDataOutput(JNIEnv *env);
170extern int register_android_backup_FileBackupHelperBase(JNIEnv *env);
171extern int register_android_backup_BackupHelperDispatcher(JNIEnv *env);
172extern int register_android_app_backup_FullBackup(JNIEnv *env);
173extern int register_android_app_ActivityThread(JNIEnv *env);
174extern int register_android_app_NativeActivity(JNIEnv *env);
175extern int register_android_media_RemoteDisplay(JNIEnv *env);
176extern int register_android_view_InputChannel(JNIEnv* env);
177extern int register_android_view_InputDevice(JNIEnv* env);
178extern int register_android_view_InputEventReceiver(JNIEnv* env);
179extern int register_android_view_InputEventSender(JNIEnv* env);
180extern int register_android_view_InputQueue(JNIEnv* env);
181extern int register_android_view_KeyCharacterMap(JNIEnv *env);
182extern int register_android_view_KeyEvent(JNIEnv* env);
183extern int register_android_view_MotionEvent(JNIEnv* env);
184extern int register_android_view_PointerIcon(JNIEnv* env);
185extern int register_android_view_VelocityTracker(JNIEnv* env);
186extern int register_android_content_res_ObbScanner(JNIEnv* env);
187extern int register_android_content_res_Configuration(JNIEnv* env);
188extern int register_android_animation_PropertyValuesHolder(JNIEnv *env);
189extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env);
190extern int register_com_android_internal_net_NetworkStatsFactory(JNIEnv *env);
191extern int register_com_android_internal_os_Zygote(JNIEnv *env);
192extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env);
193
194static AndroidRuntime* gCurRuntime = NULL;
195
196/*
197 * Code written in the Java Programming Language calls here from main().
198 */
199static void com_android_internal_os_RuntimeInit_nativeFinishInit(JNIEnv* env, jobject clazz)
200{
201    gCurRuntime->onStarted();
202}
203
204static void com_android_internal_os_RuntimeInit_nativeZygoteInit(JNIEnv* env, jobject clazz)
205{
206    gCurRuntime->onZygoteInit();
207}
208
209static void com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup(JNIEnv* env,
210        jobject clazz, jboolean exitWithoutCleanup)
211{
212    gCurRuntime->setExitWithoutCleanup(exitWithoutCleanup);
213}
214
215/*
216 * JNI registration.
217 */
218static JNINativeMethod gMethods[] = {
219    { "nativeFinishInit", "()V",
220        (void*) com_android_internal_os_RuntimeInit_nativeFinishInit },
221    { "nativeZygoteInit", "()V",
222        (void*) com_android_internal_os_RuntimeInit_nativeZygoteInit },
223    { "nativeSetExitWithoutCleanup", "(Z)V",
224        (void*) com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup },
225};
226
227int register_com_android_internal_os_RuntimeInit(JNIEnv* env)
228{
229    return jniRegisterNativeMethods(env, "com/android/internal/os/RuntimeInit",
230        gMethods, NELEM(gMethods));
231}
232
233// ----------------------------------------------------------------------
234
235/*static*/ JavaVM* AndroidRuntime::mJavaVM = NULL;
236
237AndroidRuntime::AndroidRuntime(char* argBlockStart, const size_t argBlockLength) :
238        mExitWithoutCleanup(false),
239        mArgBlockStart(argBlockStart),
240        mArgBlockLength(argBlockLength)
241{
242    SkGraphics::Init();
243    // There is also a global font cache, but its budget is specified by
244    // SK_DEFAULT_FONT_CACHE_COUNT_LIMIT and SK_DEFAULT_FONT_CACHE_LIMIT.
245
246    // Pre-allocate enough space to hold a fair number of options.
247    mOptions.setCapacity(20);
248
249    assert(gCurRuntime == NULL);        // one per process
250    gCurRuntime = this;
251}
252
253AndroidRuntime::~AndroidRuntime()
254{
255    SkGraphics::Term();
256}
257
258/*
259 * Register native methods using JNI.
260 */
261/*static*/ int AndroidRuntime::registerNativeMethods(JNIEnv* env,
262    const char* className, const JNINativeMethod* gMethods, int numMethods)
263{
264    return jniRegisterNativeMethods(env, className, gMethods, numMethods);
265}
266
267void AndroidRuntime::setArgv0(const char* argv0) {
268    memset(mArgBlockStart, 0, mArgBlockLength);
269    strlcpy(mArgBlockStart, argv0, mArgBlockLength);
270}
271
272status_t AndroidRuntime::callMain(const String8& className, jclass clazz,
273    const Vector<String8>& args)
274{
275    JNIEnv* env;
276    jmethodID methodId;
277
278    ALOGD("Calling main entry %s", className.string());
279
280    env = getJNIEnv();
281    if (clazz == NULL || env == NULL) {
282        return UNKNOWN_ERROR;
283    }
284
285    methodId = env->GetStaticMethodID(clazz, "main", "([Ljava/lang/String;)V");
286    if (methodId == NULL) {
287        ALOGE("ERROR: could not find method %s.main(String[])\n", className.string());
288        return UNKNOWN_ERROR;
289    }
290
291    /*
292     * We want to call main() with a String array with our arguments in it.
293     * Create an array and populate it.
294     */
295    jclass stringClass;
296    jobjectArray strArray;
297
298    const size_t numArgs = args.size();
299    stringClass = env->FindClass("java/lang/String");
300    strArray = env->NewObjectArray(numArgs, stringClass, NULL);
301
302    for (size_t i = 0; i < numArgs; i++) {
303        jstring argStr = env->NewStringUTF(args[i].string());
304        env->SetObjectArrayElement(strArray, i, argStr);
305    }
306
307    env->CallStaticVoidMethod(clazz, methodId, strArray);
308    return NO_ERROR;
309}
310
311/*
312 * The VM calls this through the "exit" hook.
313 */
314static void runtime_exit(int code)
315{
316    gCurRuntime->exit(code);
317}
318
319/*
320 * The VM calls this through the "vfprintf" hook.
321 *
322 * We ignore "fp" and just write the results to the log file.
323 */
324static void runtime_vfprintf(FILE* fp, const char* format, va_list ap)
325{
326    LOG_PRI_VA(ANDROID_LOG_INFO, "vm-printf", format, ap);
327}
328
329/**
330 * The VM calls this when mutex contention debugging is enabled to
331 * determine whether or not the blocked thread was a "sensitive thread"
332 * for user responsiveness/smoothess.
333 *
334 * Our policy for this is whether or not we're tracing any StrictMode
335 * events on this thread (which we might've inherited via Binder calls
336 * into us)
337 */
338static bool runtime_isSensitiveThread() {
339    IPCThreadState* state = IPCThreadState::selfOrNull();
340    return state && state->getStrictModePolicy() != 0;
341}
342
343static int hasDir(const char* dir)
344{
345    struct stat s;
346    int res = stat(dir, &s);
347    if (res == 0) {
348        return S_ISDIR(s.st_mode);
349    }
350    return 0;
351}
352
353static bool hasFile(const char* file) {
354    struct stat s;
355    int res = stat(file, &s);
356    if (res == 0) {
357        return S_ISREG(s.st_mode);
358    }
359    return false;
360}
361
362// Convenience wrapper over the property API that returns an
363// std::string.
364std::string getProperty(const char* key, const char* defaultValue) {
365    std::vector<char> temp(PROPERTY_VALUE_MAX);
366    const int len = property_get(key, &temp[0], defaultValue);
367    if (len < 0) {
368        return "";
369    }
370    return std::string(&temp[0], len);
371}
372
373/*
374 * Read the persistent locale. Inspects the following system properties
375 * (in order) and returns the first non-empty property in the list :
376 *
377 * (1) persist.sys.locale
378 * (2) persist.sys.language/country/localevar (country and localevar are
379 * inspected iff. language is non-empty.
380 * (3) ro.product.locale
381 * (4) ro.product.locale.language/region
382 *
383 * Note that we need to inspect persist.sys.language/country/localevar to
384 * preserve language settings for devices that are upgrading from Lollipop
385 * to M. The same goes for ro.product.locale.language/region as well.
386 */
387const std::string readLocale()
388{
389    const std::string locale = getProperty("persist.sys.locale", "");
390    if (!locale.empty()) {
391        return locale;
392    }
393
394    const std::string language = getProperty("persist.sys.language", "");
395    if (!language.empty()) {
396        const std::string country = getProperty("persist.sys.country", "");
397        const std::string variant = getProperty("persist.sys.localevar", "");
398
399        std::string out = language;
400        if (!country.empty()) {
401            out = out + "-" + country;
402        }
403
404        if (!variant.empty()) {
405            out = out + "-" + variant;
406        }
407
408        return out;
409    }
410
411    const std::string productLocale = getProperty("ro.product.locale", "");
412    if (!productLocale.empty()) {
413        return productLocale;
414    }
415
416    // If persist.sys.locale and ro.product.locale are missing,
417    // construct a locale value from the individual locale components.
418    const std::string productLanguage = getProperty("ro.product.locale.language", "en");
419    const std::string productRegion = getProperty("ro.product.locale.region", "US");
420
421    return productLanguage + "-" + productRegion;
422}
423
424void AndroidRuntime::addOption(const char* optionString, void* extraInfo)
425{
426    JavaVMOption opt;
427    opt.optionString = optionString;
428    opt.extraInfo = extraInfo;
429    mOptions.add(opt);
430}
431
432/*
433 * Parse a property containing space-separated options that should be
434 * passed directly to the VM, e.g. "-Xmx32m -verbose:gc -Xregenmap".
435 *
436 * This will cut up "extraOptsBuf" as we chop it into individual options.
437 *
438 * If "quotingArg" is non-null, it is passed before each extra option in mOptions.
439 *
440 * Adds the strings, if any, to mOptions.
441 */
442void AndroidRuntime::parseExtraOpts(char* extraOptsBuf, const char* quotingArg)
443{
444    char* start = extraOptsBuf;
445    char* end = NULL;
446    while (*start != '\0') {
447        while (*start == ' ')                   /* skip leading whitespace */
448            start++;
449        if (*start == '\0')                     /* was trailing ws, bail */
450            break;
451
452        end = start+1;
453        while (*end != ' ' && *end != '\0')     /* find end of token */
454            end++;
455        if (*end == ' ')
456            *end++ = '\0';          /* mark end, advance to indicate more */
457
458        if (quotingArg != NULL) {
459            addOption(quotingArg);
460        }
461        addOption(start);
462        start = end;
463    }
464}
465
466/*
467 * Reads a "property" into "buffer" with a default of "defaultArg". If
468 * the property is non-empty, it is treated as a runtime option such
469 * as "-Xmx32m".
470 *
471 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
472 *
473 * If an argument is found, it is added to mOptions.
474 *
475 * If an option is found, it is added to mOptions and true is
476 * returned. Otherwise false is returned.
477 */
478bool AndroidRuntime::parseRuntimeOption(const char* property,
479                                        char* buffer,
480                                        const char* runtimeArg,
481                                        const char* defaultArg)
482{
483    strcpy(buffer, runtimeArg);
484    size_t runtimeArgLen = strlen(runtimeArg);
485    property_get(property, buffer+runtimeArgLen, defaultArg);
486    if (buffer[runtimeArgLen] == '\0') {
487        return false;
488    }
489    addOption(buffer);
490    return true;
491}
492
493/*
494 * Reads a "property" into "buffer". If the property is non-empty, it
495 * is treated as a dex2oat compiler option that should be
496 * passed as a quoted option, e.g. "-Ximage-compiler-option --compiler-filter=verify-none".
497 *
498 * The "compilerArg" is a prefix for the option such as "--compiler-filter=".
499 *
500 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
501 *
502 * If an option is found, it is added to mOptions and true is
503 * returned. Otherwise false is returned.
504 */
505bool AndroidRuntime::parseCompilerOption(const char* property,
506                                         char* buffer,
507                                         const char* compilerArg,
508                                         const char* quotingArg)
509{
510    strcpy(buffer, compilerArg);
511    size_t compilerArgLen = strlen(compilerArg);
512    property_get(property, buffer+compilerArgLen, "");
513    if (buffer[compilerArgLen] == '\0') {
514        return false;
515    }
516    addOption(quotingArg);
517    addOption(buffer);
518    return true;
519}
520
521/*
522 * Reads a "property" into "buffer". If the property is non-empty, it
523 * is treated as a dex2oat compiler runtime option that should be
524 * passed as a quoted option, e.g. "-Ximage-compiler-option
525 * --runtime-arg -Ximage-compiler-option -Xmx32m".
526 *
527 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
528 *
529 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
530 *
531 * If an option is found, it is added to mOptions and true is
532 * returned. Otherwise false is returned.
533 */
534bool AndroidRuntime::parseCompilerRuntimeOption(const char* property,
535                                                char* buffer,
536                                                const char* runtimeArg,
537                                                const char* quotingArg)
538{
539    strcpy(buffer, runtimeArg);
540    size_t runtimeArgLen = strlen(runtimeArg);
541    property_get(property, buffer+runtimeArgLen, "");
542    if (buffer[runtimeArgLen] == '\0') {
543        return false;
544    }
545    addOption(quotingArg);
546    addOption("--runtime-arg");
547    addOption(quotingArg);
548    addOption(buffer);
549    return true;
550}
551
552/*
553 * Start the Dalvik Virtual Machine.
554 *
555 * Various arguments, most determined by system properties, are passed in.
556 * The "mOptions" vector is updated.
557 *
558 * CAUTION: when adding options in here, be careful not to put the
559 * char buffer inside a nested scope.  Adding the buffer to the
560 * options using mOptions.add() does not copy the buffer, so if the
561 * buffer goes out of scope the option may be overwritten.  It's best
562 * to put the buffer at the top of the function so that it is more
563 * unlikely that someone will surround it in a scope at a later time
564 * and thus introduce a bug.
565 *
566 * Returns 0 on success.
567 */
568int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv, bool zygote)
569{
570    JavaVMInitArgs initArgs;
571    char propBuf[PROPERTY_VALUE_MAX];
572    char stackTraceFileBuf[sizeof("-Xstacktracefile:")-1 + PROPERTY_VALUE_MAX];
573    char jniOptsBuf[sizeof("-Xjniopts:")-1 + PROPERTY_VALUE_MAX];
574    char heapstartsizeOptsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
575    char heapsizeOptsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
576    char heapgrowthlimitOptsBuf[sizeof("-XX:HeapGrowthLimit=")-1 + PROPERTY_VALUE_MAX];
577    char heapminfreeOptsBuf[sizeof("-XX:HeapMinFree=")-1 + PROPERTY_VALUE_MAX];
578    char heapmaxfreeOptsBuf[sizeof("-XX:HeapMaxFree=")-1 + PROPERTY_VALUE_MAX];
579    char usejitOptsBuf[sizeof("-Xusejit:")-1 + PROPERTY_VALUE_MAX];
580    char jitcodecachesizeOptsBuf[sizeof("-Xjitcodecachesize:")-1 + PROPERTY_VALUE_MAX];
581    char jitthresholdOptsBuf[sizeof("-Xjitthreshold:")-1 + PROPERTY_VALUE_MAX];
582    char gctypeOptsBuf[sizeof("-Xgc:")-1 + PROPERTY_VALUE_MAX];
583    char backgroundgcOptsBuf[sizeof("-XX:BackgroundGC=")-1 + PROPERTY_VALUE_MAX];
584    char heaptargetutilizationOptsBuf[sizeof("-XX:HeapTargetUtilization=")-1 + PROPERTY_VALUE_MAX];
585    char cachePruneBuf[sizeof("-Xzygote-max-boot-retry=")-1 + PROPERTY_VALUE_MAX];
586    char dex2oatXmsImageFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
587    char dex2oatXmxImageFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
588    char dex2oatXmsFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
589    char dex2oatXmxFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
590    char dex2oatCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
591    char dex2oatImageCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
592    char dex2oatThreadsBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
593    char dex2oatThreadsImageBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
594    char dex2oat_isa_variant_key[PROPERTY_KEY_MAX];
595    char dex2oat_isa_variant[sizeof("--instruction-set-variant=") -1 + PROPERTY_VALUE_MAX];
596    char dex2oat_isa_features_key[PROPERTY_KEY_MAX];
597    char dex2oat_isa_features[sizeof("--instruction-set-features=") -1 + PROPERTY_VALUE_MAX];
598    char dex2oatFlagsBuf[PROPERTY_VALUE_MAX];
599    char dex2oatImageFlagsBuf[PROPERTY_VALUE_MAX];
600    char extraOptsBuf[PROPERTY_VALUE_MAX];
601    char voldDecryptBuf[PROPERTY_VALUE_MAX];
602    enum {
603      kEMDefault,
604      kEMIntPortable,
605      kEMIntFast,
606      kEMJitCompiler,
607    } executionMode = kEMDefault;
608    char profilePeriod[sizeof("-Xprofile-period:")-1 + PROPERTY_VALUE_MAX];
609    char profileDuration[sizeof("-Xprofile-duration:")-1 + PROPERTY_VALUE_MAX];
610    char profileInterval[sizeof("-Xprofile-interval:")-1 + PROPERTY_VALUE_MAX];
611    char profileBackoff[sizeof("-Xprofile-backoff:")-1 + PROPERTY_VALUE_MAX];
612    char profileTopKThreshold[sizeof("-Xprofile-top-k-threshold:")-1 + PROPERTY_VALUE_MAX];
613    char profileTopKChangeThreshold[sizeof("-Xprofile-top-k-change-threshold:")-1 +
614                                    PROPERTY_VALUE_MAX];
615    char profileType[sizeof("-Xprofile-type:")-1 + PROPERTY_VALUE_MAX];
616    char profileMaxStackDepth[sizeof("-Xprofile-max-stack-depth:")-1 + PROPERTY_VALUE_MAX];
617    char localeOption[sizeof("-Duser.locale=") + PROPERTY_VALUE_MAX];
618    char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:")-1 + PROPERTY_VALUE_MAX];
619    char nativeBridgeLibrary[sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX];
620    char cpuAbiListBuf[sizeof("--cpu-abilist=") + PROPERTY_VALUE_MAX];
621    char methodTraceFileBuf[sizeof("-Xmethod-trace-file:") + PROPERTY_VALUE_MAX];
622    char methodTraceFileSizeBuf[sizeof("-Xmethod-trace-file-size:") + PROPERTY_VALUE_MAX];
623    char fingerprintBuf[sizeof("-Xfingerprint:") + PROPERTY_VALUE_MAX];
624
625    bool checkJni = false;
626    property_get("dalvik.vm.checkjni", propBuf, "");
627    if (strcmp(propBuf, "true") == 0) {
628        checkJni = true;
629    } else if (strcmp(propBuf, "false") != 0) {
630        /* property is neither true nor false; fall back on kernel parameter */
631        property_get("ro.kernel.android.checkjni", propBuf, "");
632        if (propBuf[0] == '1') {
633            checkJni = true;
634        }
635    }
636    ALOGD("CheckJNI is %s\n", checkJni ? "ON" : "OFF");
637    if (checkJni) {
638        /* extended JNI checking */
639        addOption("-Xcheck:jni");
640
641        /* with -Xcheck:jni, this provides a JNI function call trace */
642        //addOption("-verbose:jni");
643    }
644
645    property_get("dalvik.vm.execution-mode", propBuf, "");
646    if (strcmp(propBuf, "int:portable") == 0) {
647        executionMode = kEMIntPortable;
648    } else if (strcmp(propBuf, "int:fast") == 0) {
649        executionMode = kEMIntFast;
650    } else if (strcmp(propBuf, "int:jit") == 0) {
651        executionMode = kEMJitCompiler;
652    }
653
654    parseRuntimeOption("dalvik.vm.stack-trace-file", stackTraceFileBuf, "-Xstacktracefile:");
655
656    strcpy(jniOptsBuf, "-Xjniopts:");
657    if (parseRuntimeOption("dalvik.vm.jniopts", jniOptsBuf, "-Xjniopts:")) {
658        ALOGI("JNI options: '%s'\n", jniOptsBuf);
659    }
660
661    /* route exit() to our handler */
662    addOption("exit", (void*) runtime_exit);
663
664    /* route fprintf() to our handler */
665    addOption("vfprintf", (void*) runtime_vfprintf);
666
667    /* register the framework-specific "is sensitive thread" hook */
668    addOption("sensitiveThread", (void*) runtime_isSensitiveThread);
669
670    /* enable verbose; standard options are { jni, gc, class } */
671    //addOption("-verbose:jni");
672    addOption("-verbose:gc");
673    //addOption("-verbose:class");
674
675    /*
676     * The default starting and maximum size of the heap.  Larger
677     * values should be specified in a product property override.
678     */
679    parseRuntimeOption("dalvik.vm.heapstartsize", heapstartsizeOptsBuf, "-Xms", "4m");
680    parseRuntimeOption("dalvik.vm.heapsize", heapsizeOptsBuf, "-Xmx", "16m");
681
682    parseRuntimeOption("dalvik.vm.heapgrowthlimit", heapgrowthlimitOptsBuf, "-XX:HeapGrowthLimit=");
683    parseRuntimeOption("dalvik.vm.heapminfree", heapminfreeOptsBuf, "-XX:HeapMinFree=");
684    parseRuntimeOption("dalvik.vm.heapmaxfree", heapmaxfreeOptsBuf, "-XX:HeapMaxFree=");
685    parseRuntimeOption("dalvik.vm.heaptargetutilization",
686                       heaptargetutilizationOptsBuf,
687                       "-XX:HeapTargetUtilization=");
688
689    /*
690     * JIT related options.
691     */
692    parseRuntimeOption("dalvik.vm.usejit", usejitOptsBuf, "-Xusejit:");
693    parseRuntimeOption("dalvik.vm.jitcodecachesize", jitcodecachesizeOptsBuf, "-Xjitcodecachesize:");
694    parseRuntimeOption("dalvik.vm.jitthreshold", jitthresholdOptsBuf, "-Xjitthreshold:");
695
696    property_get("ro.config.low_ram", propBuf, "");
697    if (strcmp(propBuf, "true") == 0) {
698      addOption("-XX:LowMemoryMode");
699    }
700
701    parseRuntimeOption("dalvik.vm.gctype", gctypeOptsBuf, "-Xgc:");
702    parseRuntimeOption("dalvik.vm.backgroundgctype", backgroundgcOptsBuf, "-XX:BackgroundGC=");
703
704    /*
705     * Enable debugging only for apps forked from zygote.
706     * Set suspend=y to pause during VM init and use android ADB transport.
707     */
708    if (zygote) {
709      addOption("-agentlib:jdwp=transport=dt_android_adb,suspend=n,server=y");
710    }
711
712    parseRuntimeOption("dalvik.vm.lockprof.threshold",
713                       lockProfThresholdBuf,
714                       "-Xlockprofthreshold:");
715
716    if (executionMode == kEMIntPortable) {
717        addOption("-Xint:portable");
718    } else if (executionMode == kEMIntFast) {
719        addOption("-Xint:fast");
720    } else if (executionMode == kEMJitCompiler) {
721        addOption("-Xint:jit");
722    }
723
724    // If we are booting without the real /data, don't spend time compiling.
725    property_get("vold.decrypt", voldDecryptBuf, "");
726    bool skip_compilation = ((strcmp(voldDecryptBuf, "trigger_restart_min_framework") == 0) ||
727                             (strcmp(voldDecryptBuf, "1") == 0));
728
729    // Extra options for boot.art/boot.oat image generation.
730    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xms", dex2oatXmsImageFlagsBuf,
731                               "-Xms", "-Ximage-compiler-option");
732    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xmx", dex2oatXmxImageFlagsBuf,
733                               "-Xmx", "-Ximage-compiler-option");
734    if (skip_compilation) {
735        addOption("-Ximage-compiler-option");
736        addOption("--compiler-filter=verify-none");
737    } else {
738        parseCompilerOption("dalvik.vm.image-dex2oat-filter", dex2oatImageCompilerFilterBuf,
739                            "--compiler-filter=", "-Ximage-compiler-option");
740    }
741
742    // Make sure there is a preloaded-classes file.
743    if (!hasFile("/system/etc/preloaded-classes")) {
744        ALOGE("Missing preloaded-classes file, /system/etc/preloaded-classes not found: %s\n",
745              strerror(errno));
746        return -1;
747    }
748    addOption("-Ximage-compiler-option");
749    addOption("--image-classes=/system/etc/preloaded-classes");
750
751    // If there is a compiled-classes file, push it.
752    if (hasFile("/system/etc/compiled-classes")) {
753        addOption("-Ximage-compiler-option");
754        addOption("--compiled-classes=/system/etc/compiled-classes");
755    }
756
757    property_get("dalvik.vm.image-dex2oat-flags", dex2oatImageFlagsBuf, "");
758    parseExtraOpts(dex2oatImageFlagsBuf, "-Ximage-compiler-option");
759
760    // Extra options for DexClassLoader.
761    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xms", dex2oatXmsFlagsBuf,
762                               "-Xms", "-Xcompiler-option");
763    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xmx", dex2oatXmxFlagsBuf,
764                               "-Xmx", "-Xcompiler-option");
765    if (skip_compilation) {
766        addOption("-Xcompiler-option");
767        addOption("--compiler-filter=verify-none");
768
769        // We skip compilation when a minimal runtime is brought up for decryption. In that case
770        // /data is temporarily backed by a tmpfs, which is usually small.
771        // If the system image contains prebuilts, they will be relocated into the tmpfs. In this
772        // specific situation it is acceptable to *not* relocate and run out of the prebuilts
773        // directly instead.
774        addOption("--runtime-arg");
775        addOption("-Xnorelocate");
776    } else {
777        parseCompilerOption("dalvik.vm.dex2oat-filter", dex2oatCompilerFilterBuf,
778                            "--compiler-filter=", "-Xcompiler-option");
779    }
780    parseCompilerOption("dalvik.vm.dex2oat-threads", dex2oatThreadsBuf, "-j", "-Xcompiler-option");
781    parseCompilerOption("dalvik.vm.image-dex2oat-threads", dex2oatThreadsImageBuf, "-j",
782                        "-Ximage-compiler-option");
783
784    // The runtime will compile a boot image, when necessary, not using installd. Thus, we need to
785    // pass the instruction-set-features/variant as an image-compiler-option.
786    // TODO: Find a better way for the instruction-set.
787#if defined(__arm__)
788    constexpr const char* instruction_set = "arm";
789#elif defined(__aarch64__)
790    constexpr const char* instruction_set = "arm64";
791#elif defined(__mips__) && !defined(__LP64__)
792    constexpr const char* instruction_set = "mips";
793#elif defined(__mips__) && defined(__LP64__)
794    constexpr const char* instruction_set = "mips64";
795#elif defined(__i386__)
796    constexpr const char* instruction_set = "x86";
797#elif defined(__x86_64__)
798    constexpr const char* instruction_set = "x86_64";
799#else
800    constexpr const char* instruction_set = "unknown";
801#endif
802    // Note: it is OK to reuse the buffer, as the values are exactly the same between
803    //       * compiler-option, used for runtime compilation (DexClassLoader)
804    //       * image-compiler-option, used for boot-image compilation on device
805
806    // Copy the variant.
807    sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set);
808    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
809                        "--instruction-set-variant=", "-Ximage-compiler-option");
810    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
811                        "--instruction-set-variant=", "-Xcompiler-option");
812    // Copy the features.
813    sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set);
814    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
815                        "--instruction-set-features=", "-Ximage-compiler-option");
816    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
817                        "--instruction-set-features=", "-Xcompiler-option");
818
819
820    property_get("dalvik.vm.dex2oat-flags", dex2oatFlagsBuf, "");
821    parseExtraOpts(dex2oatFlagsBuf, "-Xcompiler-option");
822
823    /* extra options; parse this late so it overrides others */
824    property_get("dalvik.vm.extra-opts", extraOptsBuf, "");
825    parseExtraOpts(extraOptsBuf, NULL);
826
827    /* Set the properties for locale */
828    {
829        strcpy(localeOption, "-Duser.locale=");
830        const std::string locale = readLocale();
831        strncat(localeOption, locale.c_str(), PROPERTY_VALUE_MAX);
832        addOption(localeOption);
833    }
834
835    /*
836     * Set profiler options
837     */
838    // Whether or not the profiler should be enabled.
839    property_get("dalvik.vm.profiler", propBuf, "0");
840    if (propBuf[0] == '1') {
841        addOption("-Xenable-profiler");
842    }
843
844    // Whether the profile should start upon app startup or be delayed by some random offset
845    // (in seconds) that is bound between 0 and a fixed value.
846    property_get("dalvik.vm.profile.start-immed", propBuf, "0");
847    if (propBuf[0] == '1') {
848        addOption("-Xprofile-start-immediately");
849    }
850
851    // Number of seconds during profile runs.
852    parseRuntimeOption("dalvik.vm.profile.period-secs", profilePeriod, "-Xprofile-period:");
853
854    // Length of each profile run (seconds).
855    parseRuntimeOption("dalvik.vm.profile.duration-secs",
856                       profileDuration,
857                       "-Xprofile-duration:");
858
859    // Polling interval during profile run (microseconds).
860    parseRuntimeOption("dalvik.vm.profile.interval-us", profileInterval, "-Xprofile-interval:");
861
862    // Coefficient for period backoff.  The the period is multiplied
863    // by this value after each profile run.
864    parseRuntimeOption("dalvik.vm.profile.backoff-coeff", profileBackoff, "-Xprofile-backoff:");
865
866    // Top K% of samples that are considered relevant when
867    // deciding if the app should be recompiled.
868    parseRuntimeOption("dalvik.vm.profile.top-k-thr",
869                       profileTopKThreshold,
870                       "-Xprofile-top-k-threshold:");
871
872    // The threshold after which a change in the structure of the
873    // top K% profiled samples becomes significant and triggers
874    // recompilation. A change in profile is considered
875    // significant if X% (top-k-change-threshold) of the top K%
876    // (top-k-threshold property) samples has changed.
877    parseRuntimeOption("dalvik.vm.profile.top-k-ch-thr",
878                       profileTopKChangeThreshold,
879                       "-Xprofile-top-k-change-threshold:");
880
881    // Type of profile data.
882    parseRuntimeOption("dalvik.vm.profiler.type", profileType, "-Xprofile-type:");
883
884    // Depth of bounded stack data
885    parseRuntimeOption("dalvik.vm.profile.stack-depth",
886                       profileMaxStackDepth,
887                       "-Xprofile-max-stack-depth:");
888
889    /*
890     * Tracing options.
891     */
892    property_get("dalvik.vm.method-trace", propBuf, "false");
893    if (strcmp(propBuf, "true") == 0) {
894        addOption("-Xmethod-trace");
895        parseRuntimeOption("dalvik.vm.method-trace-file",
896                           methodTraceFileBuf,
897                           "-Xmethod-trace-file:");
898        parseRuntimeOption("dalvik.vm.method-trace-file-siz",
899                           methodTraceFileSizeBuf,
900                           "-Xmethod-trace-file-size:");
901        property_get("dalvik.vm.method-trace-stream", propBuf, "false");
902        if (strcmp(propBuf, "true") == 0) {
903            addOption("-Xmethod-trace-stream");
904        }
905    }
906
907    // Native bridge library. "0" means that native bridge is disabled.
908    property_get("ro.dalvik.vm.native.bridge", propBuf, "");
909    if (propBuf[0] == '\0') {
910        ALOGW("ro.dalvik.vm.native.bridge is not expected to be empty");
911    } else if (strcmp(propBuf, "0") != 0) {
912        snprintf(nativeBridgeLibrary, sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX,
913                 "-XX:NativeBridge=%s", propBuf);
914        addOption(nativeBridgeLibrary);
915    }
916
917#if defined(__LP64__)
918    const char* cpu_abilist_property_name = "ro.product.cpu.abilist64";
919#else
920    const char* cpu_abilist_property_name = "ro.product.cpu.abilist32";
921#endif  // defined(__LP64__)
922    property_get(cpu_abilist_property_name, propBuf, "");
923    if (propBuf[0] == '\0') {
924        ALOGE("%s is not expected to be empty", cpu_abilist_property_name);
925        return -1;
926    }
927    snprintf(cpuAbiListBuf, sizeof(cpuAbiListBuf), "--cpu-abilist=%s", propBuf);
928    addOption(cpuAbiListBuf);
929
930    // Dalvik-cache pruning counter.
931    parseRuntimeOption("dalvik.vm.zygote.max-boot-retry", cachePruneBuf,
932                       "-Xzygote-max-boot-retry=");
933
934    /*
935     * When running with debug.generate-debug-info, add --generate-debug-info to
936     * the compiler options so that the boot image, if it is compiled on device,
937     * will include native debugging information.
938     */
939    property_get("debug.generate-debug-info", propBuf, "");
940    if (strcmp(propBuf, "true") == 0) {
941        addOption("-Xcompiler-option");
942        addOption("--generate-debug-info");
943        addOption("-Ximage-compiler-option");
944        addOption("--generate-debug-info");
945    }
946
947    /*
948     * Retrieve the build fingerprint and provide it to the runtime. That way, ANR dumps will
949     * contain the fingerprint and can be parsed.
950     */
951    parseRuntimeOption("ro.build.fingerprint", fingerprintBuf, "-Xfingerprint:");
952
953    initArgs.version = JNI_VERSION_1_4;
954    initArgs.options = mOptions.editArray();
955    initArgs.nOptions = mOptions.size();
956    initArgs.ignoreUnrecognized = JNI_FALSE;
957
958    /*
959     * Initialize the VM.
960     *
961     * The JavaVM* is essentially per-process, and the JNIEnv* is per-thread.
962     * If this call succeeds, the VM is ready, and we can start issuing
963     * JNI calls.
964     */
965    if (JNI_CreateJavaVM(pJavaVM, pEnv, &initArgs) < 0) {
966        ALOGE("JNI_CreateJavaVM failed\n");
967        return -1;
968    }
969
970    return 0;
971}
972
973char* AndroidRuntime::toSlashClassName(const char* className)
974{
975    char* result = strdup(className);
976    for (char* cp = result; *cp != '\0'; cp++) {
977        if (*cp == '.') {
978            *cp = '/';
979        }
980    }
981    return result;
982}
983
984/** Create a Java string from an ASCII or Latin-1 string */
985jstring AndroidRuntime::NewStringLatin1(JNIEnv* env, const char* bytes) {
986    if (!bytes) return NULL;
987    int length = strlen(bytes);
988    jchar* buffer = (jchar *)alloca(length * sizeof(jchar));
989    if (!buffer) return NULL;
990    jchar* chp = buffer;
991    for (int i = 0; i < length; i++) {
992        *chp++ = *bytes++;
993    }
994    return env->NewString(buffer, length);
995}
996
997
998/*
999 * Start the Android runtime.  This involves starting the virtual machine
1000 * and calling the "static void main(String[] args)" method in the class
1001 * named by "className".
1002 *
1003 * Passes the main function two arguments, the class name and the specified
1004 * options string.
1005 */
1006void AndroidRuntime::start(const char* className, const Vector<String8>& options, bool zygote)
1007{
1008    ALOGD(">>>>>> START %s uid %d <<<<<<\n",
1009            className != NULL ? className : "(unknown)", getuid());
1010
1011    static const String8 startSystemServer("start-system-server");
1012
1013    /*
1014     * 'startSystemServer == true' means runtime is obsolete and not run from
1015     * init.rc anymore, so we print out the boot start event here.
1016     */
1017    for (size_t i = 0; i < options.size(); ++i) {
1018        if (options[i] == startSystemServer) {
1019           /* track our progress through the boot sequence */
1020           const int LOG_BOOT_PROGRESS_START = 3000;
1021           LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START,  ns2ms(systemTime(SYSTEM_TIME_MONOTONIC)));
1022        }
1023    }
1024
1025    const char* rootDir = getenv("ANDROID_ROOT");
1026    if (rootDir == NULL) {
1027        rootDir = "/system";
1028        if (!hasDir("/system")) {
1029            LOG_FATAL("No root directory specified, and /android does not exist.");
1030            return;
1031        }
1032        setenv("ANDROID_ROOT", rootDir, 1);
1033    }
1034
1035    //const char* kernelHack = getenv("LD_ASSUME_KERNEL");
1036    //ALOGD("Found LD_ASSUME_KERNEL='%s'\n", kernelHack);
1037
1038    /* start the virtual machine */
1039    JniInvocation jni_invocation;
1040    jni_invocation.Init(NULL);
1041    JNIEnv* env;
1042    if (startVm(&mJavaVM, &env, zygote) != 0) {
1043        return;
1044    }
1045    onVmCreated(env);
1046
1047    /*
1048     * Register android functions.
1049     */
1050    if (startReg(env) < 0) {
1051        ALOGE("Unable to register all android natives\n");
1052        return;
1053    }
1054
1055    /*
1056     * We want to call main() with a String array with arguments in it.
1057     * At present we have two arguments, the class name and an option string.
1058     * Create an array to hold them.
1059     */
1060    jclass stringClass;
1061    jobjectArray strArray;
1062    jstring classNameStr;
1063
1064    stringClass = env->FindClass("java/lang/String");
1065    assert(stringClass != NULL);
1066    strArray = env->NewObjectArray(options.size() + 1, stringClass, NULL);
1067    assert(strArray != NULL);
1068    classNameStr = env->NewStringUTF(className);
1069    assert(classNameStr != NULL);
1070    env->SetObjectArrayElement(strArray, 0, classNameStr);
1071
1072    for (size_t i = 0; i < options.size(); ++i) {
1073        jstring optionsStr = env->NewStringUTF(options.itemAt(i).string());
1074        assert(optionsStr != NULL);
1075        env->SetObjectArrayElement(strArray, i + 1, optionsStr);
1076    }
1077
1078    /*
1079     * Start VM.  This thread becomes the main thread of the VM, and will
1080     * not return until the VM exits.
1081     */
1082    char* slashClassName = toSlashClassName(className);
1083    jclass startClass = env->FindClass(slashClassName);
1084    if (startClass == NULL) {
1085        ALOGE("JavaVM unable to locate class '%s'\n", slashClassName);
1086        /* keep going */
1087    } else {
1088        jmethodID startMeth = env->GetStaticMethodID(startClass, "main",
1089            "([Ljava/lang/String;)V");
1090        if (startMeth == NULL) {
1091            ALOGE("JavaVM unable to find main() in '%s'\n", className);
1092            /* keep going */
1093        } else {
1094            env->CallStaticVoidMethod(startClass, startMeth, strArray);
1095
1096#if 0
1097            if (env->ExceptionCheck())
1098                threadExitUncaughtException(env);
1099#endif
1100        }
1101    }
1102    free(slashClassName);
1103
1104    ALOGD("Shutting down VM\n");
1105    if (mJavaVM->DetachCurrentThread() != JNI_OK)
1106        ALOGW("Warning: unable to detach main thread\n");
1107    if (mJavaVM->DestroyJavaVM() != 0)
1108        ALOGW("Warning: VM did not shut down cleanly\n");
1109}
1110
1111void AndroidRuntime::exit(int code)
1112{
1113    if (mExitWithoutCleanup) {
1114        ALOGI("VM exiting with result code %d, cleanup skipped.", code);
1115        ::_exit(code);
1116    } else {
1117        ALOGI("VM exiting with result code %d.", code);
1118        onExit(code);
1119        ::exit(code);
1120    }
1121}
1122
1123void AndroidRuntime::onVmCreated(JNIEnv* env)
1124{
1125    // If AndroidRuntime had anything to do here, we'd have done it in 'start'.
1126}
1127
1128/*
1129 * Get the JNIEnv pointer for this thread.
1130 *
1131 * Returns NULL if the slot wasn't allocated or populated.
1132 */
1133/*static*/ JNIEnv* AndroidRuntime::getJNIEnv()
1134{
1135    JNIEnv* env;
1136    JavaVM* vm = AndroidRuntime::getJavaVM();
1137    assert(vm != NULL);
1138
1139    if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK)
1140        return NULL;
1141    return env;
1142}
1143
1144/*
1145 * Makes the current thread visible to the VM.
1146 *
1147 * The JNIEnv pointer returned is only valid for the current thread, and
1148 * thus must be tucked into thread-local storage.
1149 */
1150static int javaAttachThread(const char* threadName, JNIEnv** pEnv)
1151{
1152    JavaVMAttachArgs args;
1153    JavaVM* vm;
1154    jint result;
1155
1156    vm = AndroidRuntime::getJavaVM();
1157    assert(vm != NULL);
1158
1159    args.version = JNI_VERSION_1_4;
1160    args.name = (char*) threadName;
1161    args.group = NULL;
1162
1163    result = vm->AttachCurrentThread(pEnv, (void*) &args);
1164    if (result != JNI_OK)
1165        ALOGI("NOTE: attach of thread '%s' failed\n", threadName);
1166
1167    return result;
1168}
1169
1170/*
1171 * Detach the current thread from the set visible to the VM.
1172 */
1173static int javaDetachThread(void)
1174{
1175    JavaVM* vm;
1176    jint result;
1177
1178    vm = AndroidRuntime::getJavaVM();
1179    assert(vm != NULL);
1180
1181    result = vm->DetachCurrentThread();
1182    if (result != JNI_OK)
1183        ALOGE("ERROR: thread detach failed\n");
1184    return result;
1185}
1186
1187/*
1188 * When starting a native thread that will be visible from the VM, we
1189 * bounce through this to get the right attach/detach action.
1190 * Note that this function calls free(args)
1191 */
1192/*static*/ int AndroidRuntime::javaThreadShell(void* args) {
1193    void* start = ((void**)args)[0];
1194    void* userData = ((void **)args)[1];
1195    char* name = (char*) ((void **)args)[2];        // we own this storage
1196    free(args);
1197    JNIEnv* env;
1198    int result;
1199
1200    /* hook us into the VM */
1201    if (javaAttachThread(name, &env) != JNI_OK)
1202        return -1;
1203
1204    /* start the thread running */
1205    result = (*(android_thread_func_t)start)(userData);
1206
1207    /* unhook us */
1208    javaDetachThread();
1209    free(name);
1210
1211    return result;
1212}
1213
1214/*
1215 * This is invoked from androidCreateThreadEtc() via the callback
1216 * set with androidSetCreateThreadFunc().
1217 *
1218 * We need to create the new thread in such a way that it gets hooked
1219 * into the VM before it really starts executing.
1220 */
1221/*static*/ int AndroidRuntime::javaCreateThreadEtc(
1222                                android_thread_func_t entryFunction,
1223                                void* userData,
1224                                const char* threadName,
1225                                int32_t threadPriority,
1226                                size_t threadStackSize,
1227                                android_thread_id_t* threadId)
1228{
1229    void** args = (void**) malloc(3 * sizeof(void*));   // javaThreadShell must free
1230    int result;
1231
1232    if (!threadName)
1233        threadName = "unnamed thread";
1234
1235    args[0] = (void*) entryFunction;
1236    args[1] = userData;
1237    args[2] = (void*) strdup(threadName);   // javaThreadShell must free
1238
1239    result = androidCreateRawThreadEtc(AndroidRuntime::javaThreadShell, args,
1240        threadName, threadPriority, threadStackSize, threadId);
1241    return result;
1242}
1243
1244/*
1245 * Create a thread that is visible from the VM.
1246 *
1247 * This is called from elsewhere in the library.
1248 */
1249/*static*/ android_thread_id_t AndroidRuntime::createJavaThread(const char* name,
1250    void (*start)(void *), void* arg)
1251{
1252    android_thread_id_t threadId = 0;
1253    javaCreateThreadEtc((android_thread_func_t) start, arg, name,
1254        ANDROID_PRIORITY_DEFAULT, 0, &threadId);
1255    return threadId;
1256}
1257
1258#if 0
1259static void quickTest(void* arg)
1260{
1261    const char* str = (const char*) arg;
1262
1263    printf("In quickTest: %s\n", str);
1264}
1265#endif
1266
1267#ifdef NDEBUG
1268    #define REG_JNI(name)      { name }
1269    struct RegJNIRec {
1270        int (*mProc)(JNIEnv*);
1271    };
1272#else
1273    #define REG_JNI(name)      { name, #name }
1274    struct RegJNIRec {
1275        int (*mProc)(JNIEnv*);
1276        const char* mName;
1277    };
1278#endif
1279
1280typedef void (*RegJAMProc)();
1281
1282static int register_jni_procs(const RegJNIRec array[], size_t count, JNIEnv* env)
1283{
1284    for (size_t i = 0; i < count; i++) {
1285        if (array[i].mProc(env) < 0) {
1286#ifndef NDEBUG
1287            ALOGD("----------!!! %s failed to load\n", array[i].mName);
1288#endif
1289            return -1;
1290        }
1291    }
1292    return 0;
1293}
1294
1295static const RegJNIRec gRegJNI[] = {
1296    REG_JNI(register_com_android_internal_os_RuntimeInit),
1297    REG_JNI(register_android_os_SystemClock),
1298    REG_JNI(register_android_util_EventLog),
1299    REG_JNI(register_android_util_Log),
1300    REG_JNI(register_android_content_AssetManager),
1301    REG_JNI(register_android_content_StringBlock),
1302    REG_JNI(register_android_content_XmlBlock),
1303    REG_JNI(register_android_text_AndroidCharacter),
1304    REG_JNI(register_android_text_StaticLayout),
1305    REG_JNI(register_android_text_AndroidBidi),
1306    REG_JNI(register_android_view_InputDevice),
1307    REG_JNI(register_android_view_KeyCharacterMap),
1308    REG_JNI(register_android_os_Process),
1309    REG_JNI(register_android_os_SystemProperties),
1310    REG_JNI(register_android_os_Binder),
1311    REG_JNI(register_android_os_Parcel),
1312    REG_JNI(register_android_nio_utils),
1313    REG_JNI(register_android_graphics_Graphics),
1314    REG_JNI(register_android_view_DisplayEventReceiver),
1315    REG_JNI(register_android_view_RenderNode),
1316    REG_JNI(register_android_view_RenderNodeAnimator),
1317    REG_JNI(register_android_view_GraphicBuffer),
1318    REG_JNI(register_android_view_DisplayListCanvas),
1319    REG_JNI(register_android_view_HardwareLayer),
1320    REG_JNI(register_android_view_ThreadedRenderer),
1321    REG_JNI(register_android_view_Surface),
1322    REG_JNI(register_android_view_SurfaceControl),
1323    REG_JNI(register_android_view_SurfaceSession),
1324    REG_JNI(register_android_view_TextureView),
1325    REG_JNI(register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper),
1326    REG_JNI(register_com_google_android_gles_jni_EGLImpl),
1327    REG_JNI(register_com_google_android_gles_jni_GLImpl),
1328    REG_JNI(register_android_opengl_jni_EGL14),
1329    REG_JNI(register_android_opengl_jni_EGLExt),
1330    REG_JNI(register_android_opengl_jni_GLES10),
1331    REG_JNI(register_android_opengl_jni_GLES10Ext),
1332    REG_JNI(register_android_opengl_jni_GLES11),
1333    REG_JNI(register_android_opengl_jni_GLES11Ext),
1334    REG_JNI(register_android_opengl_jni_GLES20),
1335    REG_JNI(register_android_opengl_jni_GLES30),
1336    REG_JNI(register_android_opengl_jni_GLES31),
1337    REG_JNI(register_android_opengl_jni_GLES31Ext),
1338
1339    REG_JNI(register_android_graphics_Bitmap),
1340    REG_JNI(register_android_graphics_BitmapFactory),
1341    REG_JNI(register_android_graphics_BitmapRegionDecoder),
1342    REG_JNI(register_android_graphics_Camera),
1343    REG_JNI(register_android_graphics_CreateJavaOutputStreamAdaptor),
1344    REG_JNI(register_android_graphics_Canvas),
1345    REG_JNI(register_android_graphics_CanvasProperty),
1346    REG_JNI(register_android_graphics_ColorFilter),
1347    REG_JNI(register_android_graphics_DrawFilter),
1348    REG_JNI(register_android_graphics_FontFamily),
1349    REG_JNI(register_android_graphics_Interpolator),
1350    REG_JNI(register_android_graphics_LayerRasterizer),
1351    REG_JNI(register_android_graphics_MaskFilter),
1352    REG_JNI(register_android_graphics_Matrix),
1353    REG_JNI(register_android_graphics_Movie),
1354    REG_JNI(register_android_graphics_NinePatch),
1355    REG_JNI(register_android_graphics_Paint),
1356    REG_JNI(register_android_graphics_Path),
1357    REG_JNI(register_android_graphics_PathMeasure),
1358    REG_JNI(register_android_graphics_PathEffect),
1359    REG_JNI(register_android_graphics_Picture),
1360    REG_JNI(register_android_graphics_PorterDuff),
1361    REG_JNI(register_android_graphics_Rasterizer),
1362    REG_JNI(register_android_graphics_Region),
1363    REG_JNI(register_android_graphics_Shader),
1364    REG_JNI(register_android_graphics_SurfaceTexture),
1365    REG_JNI(register_android_graphics_Typeface),
1366    REG_JNI(register_android_graphics_Xfermode),
1367    REG_JNI(register_android_graphics_YuvImage),
1368    REG_JNI(register_android_graphics_pdf_PdfDocument),
1369    REG_JNI(register_android_graphics_pdf_PdfEditor),
1370    REG_JNI(register_android_graphics_pdf_PdfRenderer),
1371
1372    REG_JNI(register_android_database_CursorWindow),
1373    REG_JNI(register_android_database_SQLiteConnection),
1374    REG_JNI(register_android_database_SQLiteGlobal),
1375    REG_JNI(register_android_database_SQLiteDebug),
1376    REG_JNI(register_android_os_Debug),
1377    REG_JNI(register_android_os_FileObserver),
1378    REG_JNI(register_android_os_MessageQueue),
1379    REG_JNI(register_android_os_SELinux),
1380    REG_JNI(register_android_os_Trace),
1381    REG_JNI(register_android_os_UEventObserver),
1382    REG_JNI(register_android_net_LocalSocketImpl),
1383    REG_JNI(register_android_net_NetworkUtils),
1384    REG_JNI(register_android_net_TrafficStats),
1385    REG_JNI(register_android_os_MemoryFile),
1386    REG_JNI(register_com_android_internal_os_Zygote),
1387    REG_JNI(register_com_android_internal_util_VirtualRefBasePtr),
1388    REG_JNI(register_android_hardware_Camera),
1389    REG_JNI(register_android_hardware_camera2_CameraMetadata),
1390    REG_JNI(register_android_hardware_camera2_legacy_LegacyCameraDevice),
1391    REG_JNI(register_android_hardware_camera2_legacy_PerfMeasurement),
1392    REG_JNI(register_android_hardware_camera2_DngCreator),
1393    REG_JNI(register_android_hardware_Radio),
1394    REG_JNI(register_android_hardware_SensorManager),
1395    REG_JNI(register_android_hardware_SerialPort),
1396    REG_JNI(register_android_hardware_SoundTrigger),
1397    REG_JNI(register_android_hardware_UsbDevice),
1398    REG_JNI(register_android_hardware_UsbDeviceConnection),
1399    REG_JNI(register_android_hardware_UsbRequest),
1400    REG_JNI(register_android_hardware_location_ActivityRecognitionHardware),
1401    REG_JNI(register_android_media_AudioRecord),
1402    REG_JNI(register_android_media_AudioSystem),
1403    REG_JNI(register_android_media_AudioTrack),
1404    REG_JNI(register_android_media_JetPlayer),
1405    REG_JNI(register_android_media_RemoteDisplay),
1406    REG_JNI(register_android_media_ToneGenerator),
1407
1408    REG_JNI(register_android_opengl_classes),
1409    REG_JNI(register_android_server_NetworkManagementSocketTagger),
1410    REG_JNI(register_android_ddm_DdmHandleNativeHeap),
1411    REG_JNI(register_android_backup_BackupDataInput),
1412    REG_JNI(register_android_backup_BackupDataOutput),
1413    REG_JNI(register_android_backup_FileBackupHelperBase),
1414    REG_JNI(register_android_backup_BackupHelperDispatcher),
1415    REG_JNI(register_android_app_backup_FullBackup),
1416    REG_JNI(register_android_app_ActivityThread),
1417    REG_JNI(register_android_app_NativeActivity),
1418    REG_JNI(register_android_view_InputChannel),
1419    REG_JNI(register_android_view_InputEventReceiver),
1420    REG_JNI(register_android_view_InputEventSender),
1421    REG_JNI(register_android_view_InputQueue),
1422    REG_JNI(register_android_view_KeyEvent),
1423    REG_JNI(register_android_view_MotionEvent),
1424    REG_JNI(register_android_view_PointerIcon),
1425    REG_JNI(register_android_view_VelocityTracker),
1426
1427    REG_JNI(register_android_content_res_ObbScanner),
1428    REG_JNI(register_android_content_res_Configuration),
1429
1430    REG_JNI(register_android_animation_PropertyValuesHolder),
1431    REG_JNI(register_com_android_internal_content_NativeLibraryHelper),
1432    REG_JNI(register_com_android_internal_net_NetworkStatsFactory),
1433};
1434
1435/*
1436 * Register android native functions with the VM.
1437 */
1438/*static*/ int AndroidRuntime::startReg(JNIEnv* env)
1439{
1440    /*
1441     * This hook causes all future threads created in this process to be
1442     * attached to the JavaVM.  (This needs to go away in favor of JNI
1443     * Attach calls.)
1444     */
1445    androidSetCreateThreadFunc((android_create_thread_fn) javaCreateThreadEtc);
1446
1447    ALOGV("--- registering native functions ---\n");
1448
1449    /*
1450     * Every "register" function calls one or more things that return
1451     * a local reference (e.g. FindClass).  Because we haven't really
1452     * started the VM yet, they're all getting stored in the base frame
1453     * and never released.  Use Push/Pop to manage the storage.
1454     */
1455    env->PushLocalFrame(200);
1456
1457    if (register_jni_procs(gRegJNI, NELEM(gRegJNI), env) < 0) {
1458        env->PopLocalFrame(NULL);
1459        return -1;
1460    }
1461    env->PopLocalFrame(NULL);
1462
1463    //createJavaThread("fubar", quickTest, (void*) "hello");
1464
1465    return 0;
1466}
1467
1468AndroidRuntime* AndroidRuntime::getRuntime()
1469{
1470    return gCurRuntime;
1471}
1472
1473/**
1474 * Used by surface flinger's DdmConnection to register native methods from
1475 * the framework.
1476 */
1477extern "C" jint registerFrameworkNatives(JNIEnv* env) {
1478    return register_jni_procs(gRegJNI, NELEM(gRegJNI), env);
1479}
1480}   // namespace android
1481