AndroidRuntime.cpp revision 60a2716f720e843a7de6e7209c2021d95538711e 
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_emoji_EmojiFactory(JNIEnv* env);
114extern int register_android_graphics_Canvas(JNIEnv* env);
115extern int register_android_graphics_CanvasProperty(JNIEnv* env);
116extern int register_android_graphics_ColorFilter(JNIEnv* env);
117extern int register_android_graphics_DrawFilter(JNIEnv* env);
118extern int register_android_graphics_FontFamily(JNIEnv* env);
119extern int register_android_graphics_LayerRasterizer(JNIEnv*);
120extern int register_android_graphics_Matrix(JNIEnv* env);
121extern int register_android_graphics_Paint(JNIEnv* env);
122extern int register_android_graphics_Path(JNIEnv* env);
123extern int register_android_graphics_PathMeasure(JNIEnv* env);
124extern int register_android_graphics_Picture(JNIEnv*);
125extern int register_android_graphics_PorterDuff(JNIEnv* env);
126extern int register_android_graphics_Rasterizer(JNIEnv* env);
127extern int register_android_graphics_Region(JNIEnv* env);
128extern int register_android_graphics_SurfaceTexture(JNIEnv* env);
129extern int register_android_graphics_Xfermode(JNIEnv* env);
130extern int register_android_graphics_pdf_PdfDocument(JNIEnv* env);
131extern int register_android_graphics_pdf_PdfEditor(JNIEnv* env);
132extern int register_android_graphics_pdf_PdfRenderer(JNIEnv* env);
133extern int register_android_view_DisplayEventReceiver(JNIEnv* env);
134extern int register_android_view_DisplayListCanvas(JNIEnv* env);
135extern int register_android_view_GraphicBuffer(JNIEnv* env);
136extern int register_android_view_HardwareLayer(JNIEnv* env);
137extern int register_android_view_RenderNode(JNIEnv* env);
138extern int register_android_view_RenderNodeAnimator(JNIEnv* env);
139extern int register_android_view_Surface(JNIEnv* env);
140extern int register_android_view_SurfaceControl(JNIEnv* env);
141extern int register_android_view_SurfaceSession(JNIEnv* env);
142extern int register_android_view_TextureView(JNIEnv* env);
143extern int register_android_view_ThreadedRenderer(JNIEnv* env);
144extern int register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper(JNIEnv *env);
145extern int register_android_database_CursorWindow(JNIEnv* env);
146extern int register_android_database_SQLiteConnection(JNIEnv* env);
147extern int register_android_database_SQLiteGlobal(JNIEnv* env);
148extern int register_android_database_SQLiteDebug(JNIEnv* env);
149extern int register_android_nio_utils(JNIEnv* env);
150extern int register_android_os_Debug(JNIEnv* env);
151extern int register_android_os_MessageQueue(JNIEnv* env);
152extern int register_android_os_Parcel(JNIEnv* env);
153extern int register_android_os_SELinux(JNIEnv* env);
154extern int register_android_os_SystemProperties(JNIEnv *env);
155extern int register_android_os_SystemClock(JNIEnv* env);
156extern int register_android_os_Trace(JNIEnv* env);
157extern int register_android_os_FileObserver(JNIEnv *env);
158extern int register_android_os_UEventObserver(JNIEnv* env);
159extern int register_android_os_MemoryFile(JNIEnv* env);
160extern int register_android_net_LocalSocketImpl(JNIEnv* env);
161extern int register_android_net_NetworkUtils(JNIEnv* env);
162extern int register_android_net_TrafficStats(JNIEnv* env);
163extern int register_android_text_AndroidCharacter(JNIEnv *env);
164extern int register_android_text_StaticLayout(JNIEnv *env);
165extern int register_android_text_AndroidBidi(JNIEnv *env);
166extern int register_android_opengl_classes(JNIEnv *env);
167extern int register_android_ddm_DdmHandleNativeHeap(JNIEnv *env);
168extern int register_android_server_NetworkManagementSocketTagger(JNIEnv* env);
169extern int register_android_backup_BackupDataInput(JNIEnv *env);
170extern int register_android_backup_BackupDataOutput(JNIEnv *env);
171extern int register_android_backup_FileBackupHelperBase(JNIEnv *env);
172extern int register_android_backup_BackupHelperDispatcher(JNIEnv *env);
173extern int register_android_app_backup_FullBackup(JNIEnv *env);
174extern int register_android_app_ActivityThread(JNIEnv *env);
175extern int register_android_app_NativeActivity(JNIEnv *env);
176extern int register_android_media_RemoteDisplay(JNIEnv *env);
177extern int register_android_view_InputChannel(JNIEnv* env);
178extern int register_android_view_InputDevice(JNIEnv* env);
179extern int register_android_view_InputEventReceiver(JNIEnv* env);
180extern int register_android_view_InputEventSender(JNIEnv* env);
181extern int register_android_view_InputQueue(JNIEnv* env);
182extern int register_android_view_KeyCharacterMap(JNIEnv *env);
183extern int register_android_view_KeyEvent(JNIEnv* env);
184extern int register_android_view_MotionEvent(JNIEnv* env);
185extern int register_android_view_PointerIcon(JNIEnv* env);
186extern int register_android_view_VelocityTracker(JNIEnv* env);
187extern int register_android_content_res_ObbScanner(JNIEnv* env);
188extern int register_android_content_res_Configuration(JNIEnv* env);
189extern int register_android_animation_PropertyValuesHolder(JNIEnv *env);
190extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env);
191extern int register_com_android_internal_net_NetworkStatsFactory(JNIEnv *env);
192extern int register_com_android_internal_os_Zygote(JNIEnv *env);
193extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env);
194
195static AndroidRuntime* gCurRuntime = NULL;
196
197/*
198 * Code written in the Java Programming Language calls here from main().
199 */
200static void com_android_internal_os_RuntimeInit_nativeFinishInit(JNIEnv* env, jobject clazz)
201{
202    gCurRuntime->onStarted();
203}
204
205static void com_android_internal_os_RuntimeInit_nativeZygoteInit(JNIEnv* env, jobject clazz)
206{
207    gCurRuntime->onZygoteInit();
208}
209
210static void com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup(JNIEnv* env,
211        jobject clazz, jboolean exitWithoutCleanup)
212{
213    gCurRuntime->setExitWithoutCleanup(exitWithoutCleanup);
214}
215
216/*
217 * JNI registration.
218 */
219static JNINativeMethod gMethods[] = {
220    { "nativeFinishInit", "()V",
221        (void*) com_android_internal_os_RuntimeInit_nativeFinishInit },
222    { "nativeZygoteInit", "()V",
223        (void*) com_android_internal_os_RuntimeInit_nativeZygoteInit },
224    { "nativeSetExitWithoutCleanup", "(Z)V",
225        (void*) com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup },
226};
227
228int register_com_android_internal_os_RuntimeInit(JNIEnv* env)
229{
230    return jniRegisterNativeMethods(env, "com/android/internal/os/RuntimeInit",
231        gMethods, NELEM(gMethods));
232}
233
234// ----------------------------------------------------------------------
235
236/*static*/ JavaVM* AndroidRuntime::mJavaVM = NULL;
237
238AndroidRuntime::AndroidRuntime(char* argBlockStart, const size_t argBlockLength) :
239        mExitWithoutCleanup(false),
240        mArgBlockStart(argBlockStart),
241        mArgBlockLength(argBlockLength)
242{
243    SkGraphics::Init();
244    // There is also a global font cache, but its budget is specified by
245    // SK_DEFAULT_FONT_CACHE_COUNT_LIMIT and SK_DEFAULT_FONT_CACHE_LIMIT.
246
247    // Pre-allocate enough space to hold a fair number of options.
248    mOptions.setCapacity(20);
249
250    assert(gCurRuntime == NULL);        // one per process
251    gCurRuntime = this;
252}
253
254AndroidRuntime::~AndroidRuntime()
255{
256    SkGraphics::Term();
257}
258
259/*
260 * Register native methods using JNI.
261 */
262/*static*/ int AndroidRuntime::registerNativeMethods(JNIEnv* env,
263    const char* className, const JNINativeMethod* gMethods, int numMethods)
264{
265    return jniRegisterNativeMethods(env, className, gMethods, numMethods);
266}
267
268void AndroidRuntime::setArgv0(const char* argv0) {
269    memset(mArgBlockStart, 0, mArgBlockLength);
270    strlcpy(mArgBlockStart, argv0, mArgBlockLength);
271}
272
273status_t AndroidRuntime::callMain(const String8& className, jclass clazz,
274    const Vector<String8>& args)
275{
276    JNIEnv* env;
277    jmethodID methodId;
278
279    ALOGD("Calling main entry %s", className.string());
280
281    env = getJNIEnv();
282    if (clazz == NULL || env == NULL) {
283        return UNKNOWN_ERROR;
284    }
285
286    methodId = env->GetStaticMethodID(clazz, "main", "([Ljava/lang/String;)V");
287    if (methodId == NULL) {
288        ALOGE("ERROR: could not find method %s.main(String[])\n", className.string());
289        return UNKNOWN_ERROR;
290    }
291
292    /*
293     * We want to call main() with a String array with our arguments in it.
294     * Create an array and populate it.
295     */
296    jclass stringClass;
297    jobjectArray strArray;
298
299    const size_t numArgs = args.size();
300    stringClass = env->FindClass("java/lang/String");
301    strArray = env->NewObjectArray(numArgs, stringClass, NULL);
302
303    for (size_t i = 0; i < numArgs; i++) {
304        jstring argStr = env->NewStringUTF(args[i].string());
305        env->SetObjectArrayElement(strArray, i, argStr);
306    }
307
308    env->CallStaticVoidMethod(clazz, methodId, strArray);
309    return NO_ERROR;
310}
311
312/*
313 * The VM calls this through the "exit" hook.
314 */
315static void runtime_exit(int code)
316{
317    gCurRuntime->exit(code);
318}
319
320/*
321 * The VM calls this through the "vfprintf" hook.
322 *
323 * We ignore "fp" and just write the results to the log file.
324 */
325static void runtime_vfprintf(FILE* fp, const char* format, va_list ap)
326{
327    LOG_PRI_VA(ANDROID_LOG_INFO, "vm-printf", format, ap);
328}
329
330/**
331 * The VM calls this when mutex contention debugging is enabled to
332 * determine whether or not the blocked thread was a "sensitive thread"
333 * for user responsiveness/smoothess.
334 *
335 * Our policy for this is whether or not we're tracing any StrictMode
336 * events on this thread (which we might've inherited via Binder calls
337 * into us)
338 */
339static bool runtime_isSensitiveThread() {
340    IPCThreadState* state = IPCThreadState::selfOrNull();
341    return state && state->getStrictModePolicy() != 0;
342}
343
344static int hasDir(const char* dir)
345{
346    struct stat s;
347    int res = stat(dir, &s);
348    if (res == 0) {
349        return S_ISDIR(s.st_mode);
350    }
351    return 0;
352}
353
354static bool hasFile(const char* file) {
355    struct stat s;
356    int res = stat(file, &s);
357    if (res == 0) {
358        return S_ISREG(s.st_mode);
359    }
360    return false;
361}
362
363// Convenience wrapper over the property API that returns an
364// std::string.
365std::string getProperty(const char* key, const char* defaultValue) {
366    std::vector<char> temp(PROPERTY_VALUE_MAX);
367    const int len = property_get(key, &temp[0], defaultValue);
368    if (len < 0) {
369        return "";
370    }
371    return std::string(&temp[0], len);
372}
373
374/*
375 * Read the persistent locale. Inspects the following system properties
376 * (in order) and returns the first non-empty property in the list :
377 *
378 * (1) persist.sys.locale
379 * (2) persist.sys.language/country/localevar (country and localevar are
380 * inspected iff. language is non-empty.
381 * (3) ro.product.locale
382 * (4) ro.product.locale.language/region
383 *
384 * Note that we need to inspect persist.sys.language/country/localevar to
385 * preserve language settings for devices that are upgrading from Lollipop
386 * to M. The same goes for ro.product.locale.language/region as well.
387 */
388const std::string readLocale()
389{
390    const std::string locale = getProperty("persist.sys.locale", "");
391    if (!locale.empty()) {
392        return locale;
393    }
394
395    const std::string language = getProperty("persist.sys.language", "");
396    if (!language.empty()) {
397        const std::string country = getProperty("persist.sys.country", "");
398        const std::string variant = getProperty("persist.sys.localevar", "");
399
400        std::string out = language;
401        if (!country.empty()) {
402            out = out + "-" + country;
403        }
404
405        if (!variant.empty()) {
406            out = out + "-" + variant;
407        }
408
409        return out;
410    }
411
412    const std::string productLocale = getProperty("ro.product.locale", "");
413    if (!productLocale.empty()) {
414        return productLocale;
415    }
416
417    // If persist.sys.locale and ro.product.locale are missing,
418    // construct a locale value from the individual locale components.
419    const std::string productLanguage = getProperty("ro.product.locale.language", "en");
420    const std::string productRegion = getProperty("ro.product.locale.region", "US");
421
422    return productLanguage + "-" + productRegion;
423}
424
425void AndroidRuntime::addOption(const char* optionString, void* extraInfo)
426{
427    JavaVMOption opt;
428    opt.optionString = optionString;
429    opt.extraInfo = extraInfo;
430    mOptions.add(opt);
431}
432
433/*
434 * Parse a property containing space-separated options that should be
435 * passed directly to the VM, e.g. "-Xmx32m -verbose:gc -Xregenmap".
436 *
437 * This will cut up "extraOptsBuf" as we chop it into individual options.
438 *
439 * If "quotingArg" is non-null, it is passed before each extra option in mOptions.
440 *
441 * Adds the strings, if any, to mOptions.
442 */
443void AndroidRuntime::parseExtraOpts(char* extraOptsBuf, const char* quotingArg)
444{
445    char* start = extraOptsBuf;
446    char* end = NULL;
447    while (*start != '\0') {
448        while (*start == ' ')                   /* skip leading whitespace */
449            start++;
450        if (*start == '\0')                     /* was trailing ws, bail */
451            break;
452
453        end = start+1;
454        while (*end != ' ' && *end != '\0')     /* find end of token */
455            end++;
456        if (*end == ' ')
457            *end++ = '\0';          /* mark end, advance to indicate more */
458
459        if (quotingArg != NULL) {
460            addOption(quotingArg);
461        }
462        addOption(start);
463        start = end;
464    }
465}
466
467/*
468 * Reads a "property" into "buffer" with a default of "defaultArg". If
469 * the property is non-empty, it is treated as a runtime option such
470 * as "-Xmx32m".
471 *
472 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
473 *
474 * If an argument is found, it is added to mOptions.
475 *
476 * If an option is found, it is added to mOptions and true is
477 * returned. Otherwise false is returned.
478 */
479bool AndroidRuntime::parseRuntimeOption(const char* property,
480                                        char* buffer,
481                                        const char* runtimeArg,
482                                        const char* defaultArg)
483{
484    strcpy(buffer, runtimeArg);
485    size_t runtimeArgLen = strlen(runtimeArg);
486    property_get(property, buffer+runtimeArgLen, defaultArg);
487    if (buffer[runtimeArgLen] == '\0') {
488        return false;
489    }
490    addOption(buffer);
491    return true;
492}
493
494/*
495 * Reads a "property" into "buffer". If the property is non-empty, it
496 * is treated as a dex2oat compiler option that should be
497 * passed as a quoted option, e.g. "-Ximage-compiler-option --compiler-filter=verify-none".
498 *
499 * The "compilerArg" is a prefix for the option such as "--compiler-filter=".
500 *
501 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
502 *
503 * If an option is found, it is added to mOptions and true is
504 * returned. Otherwise false is returned.
505 */
506bool AndroidRuntime::parseCompilerOption(const char* property,
507                                         char* buffer,
508                                         const char* compilerArg,
509                                         const char* quotingArg)
510{
511    strcpy(buffer, compilerArg);
512    size_t compilerArgLen = strlen(compilerArg);
513    property_get(property, buffer+compilerArgLen, "");
514    if (buffer[compilerArgLen] == '\0') {
515        return false;
516    }
517    addOption(quotingArg);
518    addOption(buffer);
519    return true;
520}
521
522/*
523 * Reads a "property" into "buffer". If the property is non-empty, it
524 * is treated as a dex2oat compiler runtime option that should be
525 * passed as a quoted option, e.g. "-Ximage-compiler-option
526 * --runtime-arg -Ximage-compiler-option -Xmx32m".
527 *
528 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
529 *
530 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
531 *
532 * If an option is found, it is added to mOptions and true is
533 * returned. Otherwise false is returned.
534 */
535bool AndroidRuntime::parseCompilerRuntimeOption(const char* property,
536                                                char* buffer,
537                                                const char* runtimeArg,
538                                                const char* quotingArg)
539{
540    strcpy(buffer, runtimeArg);
541    size_t runtimeArgLen = strlen(runtimeArg);
542    property_get(property, buffer+runtimeArgLen, "");
543    if (buffer[runtimeArgLen] == '\0') {
544        return false;
545    }
546    addOption(quotingArg);
547    addOption("--runtime-arg");
548    addOption(quotingArg);
549    addOption(buffer);
550    return true;
551}
552
553/*
554 * Start the Dalvik Virtual Machine.
555 *
556 * Various arguments, most determined by system properties, are passed in.
557 * The "mOptions" vector is updated.
558 *
559 * CAUTION: when adding options in here, be careful not to put the
560 * char buffer inside a nested scope.  Adding the buffer to the
561 * options using mOptions.add() does not copy the buffer, so if the
562 * buffer goes out of scope the option may be overwritten.  It's best
563 * to put the buffer at the top of the function so that it is more
564 * unlikely that someone will surround it in a scope at a later time
565 * and thus introduce a bug.
566 *
567 * Returns 0 on success.
568 */
569int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv, bool zygote)
570{
571    JavaVMInitArgs initArgs;
572    char propBuf[PROPERTY_VALUE_MAX];
573    char stackTraceFileBuf[sizeof("-Xstacktracefile:")-1 + PROPERTY_VALUE_MAX];
574    char jniOptsBuf[sizeof("-Xjniopts:")-1 + PROPERTY_VALUE_MAX];
575    char heapstartsizeOptsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
576    char heapsizeOptsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
577    char heapgrowthlimitOptsBuf[sizeof("-XX:HeapGrowthLimit=")-1 + PROPERTY_VALUE_MAX];
578    char heapminfreeOptsBuf[sizeof("-XX:HeapMinFree=")-1 + PROPERTY_VALUE_MAX];
579    char heapmaxfreeOptsBuf[sizeof("-XX:HeapMaxFree=")-1 + PROPERTY_VALUE_MAX];
580    char usejitOptsBuf[sizeof("-Xusejit:")-1 + PROPERTY_VALUE_MAX];
581    char jitcodecachesizeOptsBuf[sizeof("-Xjitcodecachesize:")-1 + PROPERTY_VALUE_MAX];
582    char jitthresholdOptsBuf[sizeof("-Xjitthreshold:")-1 + PROPERTY_VALUE_MAX];
583    char gctypeOptsBuf[sizeof("-Xgc:")-1 + PROPERTY_VALUE_MAX];
584    char backgroundgcOptsBuf[sizeof("-XX:BackgroundGC=")-1 + PROPERTY_VALUE_MAX];
585    char heaptargetutilizationOptsBuf[sizeof("-XX:HeapTargetUtilization=")-1 + PROPERTY_VALUE_MAX];
586    char cachePruneBuf[sizeof("-Xzygote-max-boot-retry=")-1 + PROPERTY_VALUE_MAX];
587    char dex2oatXmsImageFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
588    char dex2oatXmxImageFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
589    char dex2oatXmsFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
590    char dex2oatXmxFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
591    char dex2oatCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
592    char dex2oatImageCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
593    char dex2oatThreadsBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
594    char dex2oatThreadsImageBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
595    char dex2oat_isa_variant_key[PROPERTY_KEY_MAX];
596    char dex2oat_isa_variant[sizeof("--instruction-set-variant=") -1 + PROPERTY_VALUE_MAX];
597    char dex2oat_isa_features_key[PROPERTY_KEY_MAX];
598    char dex2oat_isa_features[sizeof("--instruction-set-features=") -1 + PROPERTY_VALUE_MAX];
599    char dex2oatFlagsBuf[PROPERTY_VALUE_MAX];
600    char dex2oatImageFlagsBuf[PROPERTY_VALUE_MAX];
601    char extraOptsBuf[PROPERTY_VALUE_MAX];
602    char voldDecryptBuf[PROPERTY_VALUE_MAX];
603    enum {
604      kEMDefault,
605      kEMIntPortable,
606      kEMIntFast,
607      kEMJitCompiler,
608    } executionMode = kEMDefault;
609    char profilePeriod[sizeof("-Xprofile-period:")-1 + PROPERTY_VALUE_MAX];
610    char profileDuration[sizeof("-Xprofile-duration:")-1 + PROPERTY_VALUE_MAX];
611    char profileInterval[sizeof("-Xprofile-interval:")-1 + PROPERTY_VALUE_MAX];
612    char profileBackoff[sizeof("-Xprofile-backoff:")-1 + PROPERTY_VALUE_MAX];
613    char profileTopKThreshold[sizeof("-Xprofile-top-k-threshold:")-1 + PROPERTY_VALUE_MAX];
614    char profileTopKChangeThreshold[sizeof("-Xprofile-top-k-change-threshold:")-1 +
615                                    PROPERTY_VALUE_MAX];
616    char profileType[sizeof("-Xprofile-type:")-1 + PROPERTY_VALUE_MAX];
617    char profileMaxStackDepth[sizeof("-Xprofile-max-stack-depth:")-1 + PROPERTY_VALUE_MAX];
618    char localeOption[sizeof("-Duser.locale=") + PROPERTY_VALUE_MAX];
619    char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:")-1 + PROPERTY_VALUE_MAX];
620    char nativeBridgeLibrary[sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX];
621    char cpuAbiListBuf[sizeof("--cpu-abilist=") + PROPERTY_VALUE_MAX];
622    char methodTraceFileBuf[sizeof("-Xmethod-trace-file:") + PROPERTY_VALUE_MAX];
623    char methodTraceFileSizeBuf[sizeof("-Xmethod-trace-file-size:") + PROPERTY_VALUE_MAX];
624    char fingerprintBuf[sizeof("-Xfingerprint:") + PROPERTY_VALUE_MAX];
625
626    bool checkJni = false;
627    property_get("dalvik.vm.checkjni", propBuf, "");
628    if (strcmp(propBuf, "true") == 0) {
629        checkJni = true;
630    } else if (strcmp(propBuf, "false") != 0) {
631        /* property is neither true nor false; fall back on kernel parameter */
632        property_get("ro.kernel.android.checkjni", propBuf, "");
633        if (propBuf[0] == '1') {
634            checkJni = true;
635        }
636    }
637    ALOGD("CheckJNI is %s\n", checkJni ? "ON" : "OFF");
638    if (checkJni) {
639        /* extended JNI checking */
640        addOption("-Xcheck:jni");
641
642        /* with -Xcheck:jni, this provides a JNI function call trace */
643        //addOption("-verbose:jni");
644    }
645
646    property_get("dalvik.vm.execution-mode", propBuf, "");
647    if (strcmp(propBuf, "int:portable") == 0) {
648        executionMode = kEMIntPortable;
649    } else if (strcmp(propBuf, "int:fast") == 0) {
650        executionMode = kEMIntFast;
651    } else if (strcmp(propBuf, "int:jit") == 0) {
652        executionMode = kEMJitCompiler;
653    }
654
655    parseRuntimeOption("dalvik.vm.stack-trace-file", stackTraceFileBuf, "-Xstacktracefile:");
656
657    strcpy(jniOptsBuf, "-Xjniopts:");
658    if (parseRuntimeOption("dalvik.vm.jniopts", jniOptsBuf, "-Xjniopts:")) {
659        ALOGI("JNI options: '%s'\n", jniOptsBuf);
660    }
661
662    /* route exit() to our handler */
663    addOption("exit", (void*) runtime_exit);
664
665    /* route fprintf() to our handler */
666    addOption("vfprintf", (void*) runtime_vfprintf);
667
668    /* register the framework-specific "is sensitive thread" hook */
669    addOption("sensitiveThread", (void*) runtime_isSensitiveThread);
670
671    /* enable verbose; standard options are { jni, gc, class } */
672    //addOption("-verbose:jni");
673    addOption("-verbose:gc");
674    //addOption("-verbose:class");
675
676    /*
677     * The default starting and maximum size of the heap.  Larger
678     * values should be specified in a product property override.
679     */
680    parseRuntimeOption("dalvik.vm.heapstartsize", heapstartsizeOptsBuf, "-Xms", "4m");
681    parseRuntimeOption("dalvik.vm.heapsize", heapsizeOptsBuf, "-Xmx", "16m");
682
683    parseRuntimeOption("dalvik.vm.heapgrowthlimit", heapgrowthlimitOptsBuf, "-XX:HeapGrowthLimit=");
684    parseRuntimeOption("dalvik.vm.heapminfree", heapminfreeOptsBuf, "-XX:HeapMinFree=");
685    parseRuntimeOption("dalvik.vm.heapmaxfree", heapmaxfreeOptsBuf, "-XX:HeapMaxFree=");
686    parseRuntimeOption("dalvik.vm.heaptargetutilization",
687                       heaptargetutilizationOptsBuf,
688                       "-XX:HeapTargetUtilization=");
689
690    /*
691     * JIT related options.
692     */
693    parseRuntimeOption("dalvik.vm.usejit", usejitOptsBuf, "-Xusejit:");
694    parseRuntimeOption("dalvik.vm.jitcodecachesize", jitcodecachesizeOptsBuf, "-Xjitcodecachesize:");
695    parseRuntimeOption("dalvik.vm.jitthreshold", jitthresholdOptsBuf, "-Xjitthreshold:");
696
697    property_get("ro.config.low_ram", propBuf, "");
698    if (strcmp(propBuf, "true") == 0) {
699      addOption("-XX:LowMemoryMode");
700    }
701
702    parseRuntimeOption("dalvik.vm.gctype", gctypeOptsBuf, "-Xgc:");
703    parseRuntimeOption("dalvik.vm.backgroundgctype", backgroundgcOptsBuf, "-XX:BackgroundGC=");
704
705    /*
706     * Enable debugging only for apps forked from zygote.
707     * Set suspend=y to pause during VM init and use android ADB transport.
708     */
709    if (zygote) {
710      addOption("-agentlib:jdwp=transport=dt_android_adb,suspend=n,server=y");
711    }
712
713    parseRuntimeOption("dalvik.vm.lockprof.threshold",
714                       lockProfThresholdBuf,
715                       "-Xlockprofthreshold:");
716
717    if (executionMode == kEMIntPortable) {
718        addOption("-Xint:portable");
719    } else if (executionMode == kEMIntFast) {
720        addOption("-Xint:fast");
721    } else if (executionMode == kEMJitCompiler) {
722        addOption("-Xint:jit");
723    }
724
725    // If we are booting without the real /data, don't spend time compiling.
726    property_get("vold.decrypt", voldDecryptBuf, "");
727    bool skip_compilation = ((strcmp(voldDecryptBuf, "trigger_restart_min_framework") == 0) ||
728                             (strcmp(voldDecryptBuf, "1") == 0));
729
730    // Extra options for boot.art/boot.oat image generation.
731    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xms", dex2oatXmsImageFlagsBuf,
732                               "-Xms", "-Ximage-compiler-option");
733    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xmx", dex2oatXmxImageFlagsBuf,
734                               "-Xmx", "-Ximage-compiler-option");
735    if (skip_compilation) {
736        addOption("-Ximage-compiler-option");
737        addOption("--compiler-filter=verify-none");
738    } else {
739        parseCompilerOption("dalvik.vm.image-dex2oat-filter", dex2oatImageCompilerFilterBuf,
740                            "--compiler-filter=", "-Ximage-compiler-option");
741    }
742
743    // Make sure there is a preloaded-classes file.
744    if (!hasFile("/system/etc/preloaded-classes")) {
745        ALOGE("Missing preloaded-classes file, /system/etc/preloaded-classes not found: %s\n",
746              strerror(errno));
747        return -1;
748    }
749    addOption("-Ximage-compiler-option");
750    addOption("--image-classes=/system/etc/preloaded-classes");
751
752    // If there is a compiled-classes file, push it.
753    if (hasFile("/system/etc/compiled-classes")) {
754        addOption("-Ximage-compiler-option");
755        addOption("--compiled-classes=/system/etc/compiled-classes");
756    }
757
758    property_get("dalvik.vm.image-dex2oat-flags", dex2oatImageFlagsBuf, "");
759    parseExtraOpts(dex2oatImageFlagsBuf, "-Ximage-compiler-option");
760
761    // Extra options for DexClassLoader.
762    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xms", dex2oatXmsFlagsBuf,
763                               "-Xms", "-Xcompiler-option");
764    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xmx", dex2oatXmxFlagsBuf,
765                               "-Xmx", "-Xcompiler-option");
766    if (skip_compilation) {
767        addOption("-Xcompiler-option");
768        addOption("--compiler-filter=verify-none");
769
770        // We skip compilation when a minimal runtime is brought up for decryption. In that case
771        // /data is temporarily backed by a tmpfs, which is usually small.
772        // If the system image contains prebuilts, they will be relocated into the tmpfs. In this
773        // specific situation it is acceptable to *not* relocate and run out of the prebuilts
774        // directly instead.
775        addOption("--runtime-arg");
776        addOption("-Xnorelocate");
777    } else {
778        parseCompilerOption("dalvik.vm.dex2oat-filter", dex2oatCompilerFilterBuf,
779                            "--compiler-filter=", "-Xcompiler-option");
780    }
781    parseCompilerOption("dalvik.vm.dex2oat-threads", dex2oatThreadsBuf, "-j", "-Xcompiler-option");
782    parseCompilerOption("dalvik.vm.image-dex2oat-threads", dex2oatThreadsImageBuf, "-j",
783                        "-Ximage-compiler-option");
784
785    // The runtime will compile a boot image, when necessary, not using installd. Thus, we need to
786    // pass the instruction-set-features/variant as an image-compiler-option.
787    // TODO: Find a better way for the instruction-set.
788#if defined(__arm__)
789    constexpr const char* instruction_set = "arm";
790#elif defined(__aarch64__)
791    constexpr const char* instruction_set = "arm64";
792#elif defined(__mips__) && !defined(__LP64__)
793    constexpr const char* instruction_set = "mips";
794#elif defined(__mips__) && defined(__LP64__)
795    constexpr const char* instruction_set = "mips64";
796#elif defined(__i386__)
797    constexpr const char* instruction_set = "x86";
798#elif defined(__x86_64__)
799    constexpr const char* instruction_set = "x86_64";
800#else
801    constexpr const char* instruction_set = "unknown";
802#endif
803    // Note: it is OK to reuse the buffer, as the values are exactly the same between
804    //       * compiler-option, used for runtime compilation (DexClassLoader)
805    //       * image-compiler-option, used for boot-image compilation on device
806
807    // Copy the variant.
808    sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set);
809    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
810                        "--instruction-set-variant=", "-Ximage-compiler-option");
811    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
812                        "--instruction-set-variant=", "-Xcompiler-option");
813    // Copy the features.
814    sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set);
815    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
816                        "--instruction-set-features=", "-Ximage-compiler-option");
817    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
818                        "--instruction-set-features=", "-Xcompiler-option");
819
820
821    property_get("dalvik.vm.dex2oat-flags", dex2oatFlagsBuf, "");
822    parseExtraOpts(dex2oatFlagsBuf, "-Xcompiler-option");
823
824    /* extra options; parse this late so it overrides others */
825    property_get("dalvik.vm.extra-opts", extraOptsBuf, "");
826    parseExtraOpts(extraOptsBuf, NULL);
827
828    /* Set the properties for locale */
829    {
830        strcpy(localeOption, "-Duser.locale=");
831        const std::string locale = readLocale();
832        strncat(localeOption, locale.c_str(), PROPERTY_VALUE_MAX);
833        addOption(localeOption);
834    }
835
836    /*
837     * Set profiler options
838     */
839    // Whether or not the profiler should be enabled.
840    property_get("dalvik.vm.profiler", propBuf, "0");
841    if (propBuf[0] == '1') {
842        addOption("-Xenable-profiler");
843    }
844
845    // Whether the profile should start upon app startup or be delayed by some random offset
846    // (in seconds) that is bound between 0 and a fixed value.
847    property_get("dalvik.vm.profile.start-immed", propBuf, "0");
848    if (propBuf[0] == '1') {
849        addOption("-Xprofile-start-immediately");
850    }
851
852    // Number of seconds during profile runs.
853    parseRuntimeOption("dalvik.vm.profile.period-secs", profilePeriod, "-Xprofile-period:");
854
855    // Length of each profile run (seconds).
856    parseRuntimeOption("dalvik.vm.profile.duration-secs",
857                       profileDuration,
858                       "-Xprofile-duration:");
859
860    // Polling interval during profile run (microseconds).
861    parseRuntimeOption("dalvik.vm.profile.interval-us", profileInterval, "-Xprofile-interval:");
862
863    // Coefficient for period backoff.  The the period is multiplied
864    // by this value after each profile run.
865    parseRuntimeOption("dalvik.vm.profile.backoff-coeff", profileBackoff, "-Xprofile-backoff:");
866
867    // Top K% of samples that are considered relevant when
868    // deciding if the app should be recompiled.
869    parseRuntimeOption("dalvik.vm.profile.top-k-thr",
870                       profileTopKThreshold,
871                       "-Xprofile-top-k-threshold:");
872
873    // The threshold after which a change in the structure of the
874    // top K% profiled samples becomes significant and triggers
875    // recompilation. A change in profile is considered
876    // significant if X% (top-k-change-threshold) of the top K%
877    // (top-k-threshold property) samples has changed.
878    parseRuntimeOption("dalvik.vm.profile.top-k-ch-thr",
879                       profileTopKChangeThreshold,
880                       "-Xprofile-top-k-change-threshold:");
881
882    // Type of profile data.
883    parseRuntimeOption("dalvik.vm.profiler.type", profileType, "-Xprofile-type:");
884
885    // Depth of bounded stack data
886    parseRuntimeOption("dalvik.vm.profile.stack-depth",
887                       profileMaxStackDepth,
888                       "-Xprofile-max-stack-depth:");
889
890    /*
891     * Tracing options.
892     */
893    property_get("dalvik.vm.method-trace", propBuf, "false");
894    if (strcmp(propBuf, "true") == 0) {
895        addOption("-Xmethod-trace");
896        parseRuntimeOption("dalvik.vm.method-trace-file",
897                           methodTraceFileBuf,
898                           "-Xmethod-trace-file:");
899        parseRuntimeOption("dalvik.vm.method-trace-file-siz",
900                           methodTraceFileSizeBuf,
901                           "-Xmethod-trace-file-size:");
902        property_get("dalvik.vm.method-trace-stream", propBuf, "false");
903        if (strcmp(propBuf, "true") == 0) {
904            addOption("-Xmethod-trace-stream");
905        }
906    }
907
908    // Native bridge library. "0" means that native bridge is disabled.
909    property_get("ro.dalvik.vm.native.bridge", propBuf, "");
910    if (propBuf[0] == '\0') {
911        ALOGW("ro.dalvik.vm.native.bridge is not expected to be empty");
912    } else if (strcmp(propBuf, "0") != 0) {
913        snprintf(nativeBridgeLibrary, sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX,
914                 "-XX:NativeBridge=%s", propBuf);
915        addOption(nativeBridgeLibrary);
916    }
917
918#if defined(__LP64__)
919    const char* cpu_abilist_property_name = "ro.product.cpu.abilist64";
920#else
921    const char* cpu_abilist_property_name = "ro.product.cpu.abilist32";
922#endif  // defined(__LP64__)
923    property_get(cpu_abilist_property_name, propBuf, "");
924    if (propBuf[0] == '\0') {
925        ALOGE("%s is not expected to be empty", cpu_abilist_property_name);
926        return -1;
927    }
928    snprintf(cpuAbiListBuf, sizeof(cpuAbiListBuf), "--cpu-abilist=%s", propBuf);
929    addOption(cpuAbiListBuf);
930
931    // Dalvik-cache pruning counter.
932    parseRuntimeOption("dalvik.vm.zygote.max-boot-retry", cachePruneBuf,
933                       "-Xzygote-max-boot-retry=");
934
935    /*
936     * When running with debug.generate-debug-info, add --generate-debug-info to
937     * the compiler options so that the boot image, if it is compiled on device,
938     * will include native debugging information.
939     */
940    property_get("debug.generate-debug-info", propBuf, "");
941    if (strcmp(propBuf, "true") == 0) {
942        addOption("-Xcompiler-option");
943        addOption("--generate-debug-info");
944        addOption("-Ximage-compiler-option");
945        addOption("--generate-debug-info");
946    }
947
948    /*
949     * Retrieve the build fingerprint and provide it to the runtime. That way, ANR dumps will
950     * contain the fingerprint and can be parsed.
951     */
952    parseRuntimeOption("ro.build.fingerprint", fingerprintBuf, "-Xfingerprint:");
953
954    initArgs.version = JNI_VERSION_1_4;
955    initArgs.options = mOptions.editArray();
956    initArgs.nOptions = mOptions.size();
957    initArgs.ignoreUnrecognized = JNI_FALSE;
958
959    /*
960     * Initialize the VM.
961     *
962     * The JavaVM* is essentially per-process, and the JNIEnv* is per-thread.
963     * If this call succeeds, the VM is ready, and we can start issuing
964     * JNI calls.
965     */
966    if (JNI_CreateJavaVM(pJavaVM, pEnv, &initArgs) < 0) {
967        ALOGE("JNI_CreateJavaVM failed\n");
968        return -1;
969    }
970
971    return 0;
972}
973
974char* AndroidRuntime::toSlashClassName(const char* className)
975{
976    char* result = strdup(className);
977    for (char* cp = result; *cp != '\0'; cp++) {
978        if (*cp == '.') {
979            *cp = '/';
980        }
981    }
982    return result;
983}
984
985/** Create a Java string from an ASCII or Latin-1 string */
986jstring AndroidRuntime::NewStringLatin1(JNIEnv* env, const char* bytes) {
987    if (!bytes) return NULL;
988    int length = strlen(bytes);
989    jchar* buffer = (jchar *)alloca(length * sizeof(jchar));
990    if (!buffer) return NULL;
991    jchar* chp = buffer;
992    for (int i = 0; i < length; i++) {
993        *chp++ = *bytes++;
994    }
995    return env->NewString(buffer, length);
996}
997
998
999/*
1000 * Start the Android runtime.  This involves starting the virtual machine
1001 * and calling the "static void main(String[] args)" method in the class
1002 * named by "className".
1003 *
1004 * Passes the main function two arguments, the class name and the specified
1005 * options string.
1006 */
1007void AndroidRuntime::start(const char* className, const Vector<String8>& options, bool zygote)
1008{
1009    ALOGD(">>>>>> START %s uid %d <<<<<<\n",
1010            className != NULL ? className : "(unknown)", getuid());
1011
1012    static const String8 startSystemServer("start-system-server");
1013
1014    /*
1015     * 'startSystemServer == true' means runtime is obsolete and not run from
1016     * init.rc anymore, so we print out the boot start event here.
1017     */
1018    for (size_t i = 0; i < options.size(); ++i) {
1019        if (options[i] == startSystemServer) {
1020           /* track our progress through the boot sequence */
1021           const int LOG_BOOT_PROGRESS_START = 3000;
1022           LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START,  ns2ms(systemTime(SYSTEM_TIME_MONOTONIC)));
1023        }
1024    }
1025
1026    const char* rootDir = getenv("ANDROID_ROOT");
1027    if (rootDir == NULL) {
1028        rootDir = "/system";
1029        if (!hasDir("/system")) {
1030            LOG_FATAL("No root directory specified, and /android does not exist.");
1031            return;
1032        }
1033        setenv("ANDROID_ROOT", rootDir, 1);
1034    }
1035
1036    //const char* kernelHack = getenv("LD_ASSUME_KERNEL");
1037    //ALOGD("Found LD_ASSUME_KERNEL='%s'\n", kernelHack);
1038
1039    /* start the virtual machine */
1040    JniInvocation jni_invocation;
1041    jni_invocation.Init(NULL);
1042    JNIEnv* env;
1043    if (startVm(&mJavaVM, &env, zygote) != 0) {
1044        return;
1045    }
1046    onVmCreated(env);
1047
1048    /*
1049     * Register android functions.
1050     */
1051    if (startReg(env) < 0) {
1052        ALOGE("Unable to register all android natives\n");
1053        return;
1054    }
1055
1056    /*
1057     * We want to call main() with a String array with arguments in it.
1058     * At present we have two arguments, the class name and an option string.
1059     * Create an array to hold them.
1060     */
1061    jclass stringClass;
1062    jobjectArray strArray;
1063    jstring classNameStr;
1064
1065    stringClass = env->FindClass("java/lang/String");
1066    assert(stringClass != NULL);
1067    strArray = env->NewObjectArray(options.size() + 1, stringClass, NULL);
1068    assert(strArray != NULL);
1069    classNameStr = env->NewStringUTF(className);
1070    assert(classNameStr != NULL);
1071    env->SetObjectArrayElement(strArray, 0, classNameStr);
1072
1073    for (size_t i = 0; i < options.size(); ++i) {
1074        jstring optionsStr = env->NewStringUTF(options.itemAt(i).string());
1075        assert(optionsStr != NULL);
1076        env->SetObjectArrayElement(strArray, i + 1, optionsStr);
1077    }
1078
1079    /*
1080     * Start VM.  This thread becomes the main thread of the VM, and will
1081     * not return until the VM exits.
1082     */
1083    char* slashClassName = toSlashClassName(className);
1084    jclass startClass = env->FindClass(slashClassName);
1085    if (startClass == NULL) {
1086        ALOGE("JavaVM unable to locate class '%s'\n", slashClassName);
1087        /* keep going */
1088    } else {
1089        jmethodID startMeth = env->GetStaticMethodID(startClass, "main",
1090            "([Ljava/lang/String;)V");
1091        if (startMeth == NULL) {
1092            ALOGE("JavaVM unable to find main() in '%s'\n", className);
1093            /* keep going */
1094        } else {
1095            env->CallStaticVoidMethod(startClass, startMeth, strArray);
1096
1097#if 0
1098            if (env->ExceptionCheck())
1099                threadExitUncaughtException(env);
1100#endif
1101        }
1102    }
1103    free(slashClassName);
1104
1105    ALOGD("Shutting down VM\n");
1106    if (mJavaVM->DetachCurrentThread() != JNI_OK)
1107        ALOGW("Warning: unable to detach main thread\n");
1108    if (mJavaVM->DestroyJavaVM() != 0)
1109        ALOGW("Warning: VM did not shut down cleanly\n");
1110}
1111
1112void AndroidRuntime::exit(int code)
1113{
1114    if (mExitWithoutCleanup) {
1115        ALOGI("VM exiting with result code %d, cleanup skipped.", code);
1116        ::_exit(code);
1117    } else {
1118        ALOGI("VM exiting with result code %d.", code);
1119        onExit(code);
1120        ::exit(code);
1121    }
1122}
1123
1124void AndroidRuntime::onVmCreated(JNIEnv* env)
1125{
1126    // If AndroidRuntime had anything to do here, we'd have done it in 'start'.
1127}
1128
1129/*
1130 * Get the JNIEnv pointer for this thread.
1131 *
1132 * Returns NULL if the slot wasn't allocated or populated.
1133 */
1134/*static*/ JNIEnv* AndroidRuntime::getJNIEnv()
1135{
1136    JNIEnv* env;
1137    JavaVM* vm = AndroidRuntime::getJavaVM();
1138    assert(vm != NULL);
1139
1140    if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK)
1141        return NULL;
1142    return env;
1143}
1144
1145/*
1146 * Makes the current thread visible to the VM.
1147 *
1148 * The JNIEnv pointer returned is only valid for the current thread, and
1149 * thus must be tucked into thread-local storage.
1150 */
1151static int javaAttachThread(const char* threadName, JNIEnv** pEnv)
1152{
1153    JavaVMAttachArgs args;
1154    JavaVM* vm;
1155    jint result;
1156
1157    vm = AndroidRuntime::getJavaVM();
1158    assert(vm != NULL);
1159
1160    args.version = JNI_VERSION_1_4;
1161    args.name = (char*) threadName;
1162    args.group = NULL;
1163
1164    result = vm->AttachCurrentThread(pEnv, (void*) &args);
1165    if (result != JNI_OK)
1166        ALOGI("NOTE: attach of thread '%s' failed\n", threadName);
1167
1168    return result;
1169}
1170
1171/*
1172 * Detach the current thread from the set visible to the VM.
1173 */
1174static int javaDetachThread(void)
1175{
1176    JavaVM* vm;
1177    jint result;
1178
1179    vm = AndroidRuntime::getJavaVM();
1180    assert(vm != NULL);
1181
1182    result = vm->DetachCurrentThread();
1183    if (result != JNI_OK)
1184        ALOGE("ERROR: thread detach failed\n");
1185    return result;
1186}
1187
1188/*
1189 * When starting a native thread that will be visible from the VM, we
1190 * bounce through this to get the right attach/detach action.
1191 * Note that this function calls free(args)
1192 */
1193/*static*/ int AndroidRuntime::javaThreadShell(void* args) {
1194    void* start = ((void**)args)[0];
1195    void* userData = ((void **)args)[1];
1196    char* name = (char*) ((void **)args)[2];        // we own this storage
1197    free(args);
1198    JNIEnv* env;
1199    int result;
1200
1201    /* hook us into the VM */
1202    if (javaAttachThread(name, &env) != JNI_OK)
1203        return -1;
1204
1205    /* start the thread running */
1206    result = (*(android_thread_func_t)start)(userData);
1207
1208    /* unhook us */
1209    javaDetachThread();
1210    free(name);
1211
1212    return result;
1213}
1214
1215/*
1216 * This is invoked from androidCreateThreadEtc() via the callback
1217 * set with androidSetCreateThreadFunc().
1218 *
1219 * We need to create the new thread in such a way that it gets hooked
1220 * into the VM before it really starts executing.
1221 */
1222/*static*/ int AndroidRuntime::javaCreateThreadEtc(
1223                                android_thread_func_t entryFunction,
1224                                void* userData,
1225                                const char* threadName,
1226                                int32_t threadPriority,
1227                                size_t threadStackSize,
1228                                android_thread_id_t* threadId)
1229{
1230    void** args = (void**) malloc(3 * sizeof(void*));   // javaThreadShell must free
1231    int result;
1232
1233    if (!threadName)
1234        threadName = "unnamed thread";
1235
1236    args[0] = (void*) entryFunction;
1237    args[1] = userData;
1238    args[2] = (void*) strdup(threadName);   // javaThreadShell must free
1239
1240    result = androidCreateRawThreadEtc(AndroidRuntime::javaThreadShell, args,
1241        threadName, threadPriority, threadStackSize, threadId);
1242    return result;
1243}
1244
1245/*
1246 * Create a thread that is visible from the VM.
1247 *
1248 * This is called from elsewhere in the library.
1249 */
1250/*static*/ android_thread_id_t AndroidRuntime::createJavaThread(const char* name,
1251    void (*start)(void *), void* arg)
1252{
1253    android_thread_id_t threadId = 0;
1254    javaCreateThreadEtc((android_thread_func_t) start, arg, name,
1255        ANDROID_PRIORITY_DEFAULT, 0, &threadId);
1256    return threadId;
1257}
1258
1259#if 0
1260static void quickTest(void* arg)
1261{
1262    const char* str = (const char*) arg;
1263
1264    printf("In quickTest: %s\n", str);
1265}
1266#endif
1267
1268#ifdef NDEBUG
1269    #define REG_JNI(name)      { name }
1270    struct RegJNIRec {
1271        int (*mProc)(JNIEnv*);
1272    };
1273#else
1274    #define REG_JNI(name)      { name, #name }
1275    struct RegJNIRec {
1276        int (*mProc)(JNIEnv*);
1277        const char* mName;
1278    };
1279#endif
1280
1281typedef void (*RegJAMProc)();
1282
1283static int register_jni_procs(const RegJNIRec array[], size_t count, JNIEnv* env)
1284{
1285    for (size_t i = 0; i < count; i++) {
1286        if (array[i].mProc(env) < 0) {
1287#ifndef NDEBUG
1288            ALOGD("----------!!! %s failed to load\n", array[i].mName);
1289#endif
1290            return -1;
1291        }
1292    }
1293    return 0;
1294}
1295
1296static const RegJNIRec gRegJNI[] = {
1297    REG_JNI(register_com_android_internal_os_RuntimeInit),
1298    REG_JNI(register_android_os_SystemClock),
1299    REG_JNI(register_android_util_EventLog),
1300    REG_JNI(register_android_util_Log),
1301    REG_JNI(register_android_content_AssetManager),
1302    REG_JNI(register_android_content_StringBlock),
1303    REG_JNI(register_android_content_XmlBlock),
1304    REG_JNI(register_android_emoji_EmojiFactory),
1305    REG_JNI(register_android_text_AndroidCharacter),
1306    REG_JNI(register_android_text_StaticLayout),
1307    REG_JNI(register_android_text_AndroidBidi),
1308    REG_JNI(register_android_view_InputDevice),
1309    REG_JNI(register_android_view_KeyCharacterMap),
1310    REG_JNI(register_android_os_Process),
1311    REG_JNI(register_android_os_SystemProperties),
1312    REG_JNI(register_android_os_Binder),
1313    REG_JNI(register_android_os_Parcel),
1314    REG_JNI(register_android_nio_utils),
1315    REG_JNI(register_android_graphics_Graphics),
1316    REG_JNI(register_android_view_DisplayEventReceiver),
1317    REG_JNI(register_android_view_RenderNode),
1318    REG_JNI(register_android_view_RenderNodeAnimator),
1319    REG_JNI(register_android_view_GraphicBuffer),
1320    REG_JNI(register_android_view_DisplayListCanvas),
1321    REG_JNI(register_android_view_HardwareLayer),
1322    REG_JNI(register_android_view_ThreadedRenderer),
1323    REG_JNI(register_android_view_Surface),
1324    REG_JNI(register_android_view_SurfaceControl),
1325    REG_JNI(register_android_view_SurfaceSession),
1326    REG_JNI(register_android_view_TextureView),
1327    REG_JNI(register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper),
1328    REG_JNI(register_com_google_android_gles_jni_EGLImpl),
1329    REG_JNI(register_com_google_android_gles_jni_GLImpl),
1330    REG_JNI(register_android_opengl_jni_EGL14),
1331    REG_JNI(register_android_opengl_jni_EGLExt),
1332    REG_JNI(register_android_opengl_jni_GLES10),
1333    REG_JNI(register_android_opengl_jni_GLES10Ext),
1334    REG_JNI(register_android_opengl_jni_GLES11),
1335    REG_JNI(register_android_opengl_jni_GLES11Ext),
1336    REG_JNI(register_android_opengl_jni_GLES20),
1337    REG_JNI(register_android_opengl_jni_GLES30),
1338    REG_JNI(register_android_opengl_jni_GLES31),
1339    REG_JNI(register_android_opengl_jni_GLES31Ext),
1340
1341    REG_JNI(register_android_graphics_Bitmap),
1342    REG_JNI(register_android_graphics_BitmapFactory),
1343    REG_JNI(register_android_graphics_BitmapRegionDecoder),
1344    REG_JNI(register_android_graphics_Camera),
1345    REG_JNI(register_android_graphics_CreateJavaOutputStreamAdaptor),
1346    REG_JNI(register_android_graphics_Canvas),
1347    REG_JNI(register_android_graphics_CanvasProperty),
1348    REG_JNI(register_android_graphics_ColorFilter),
1349    REG_JNI(register_android_graphics_DrawFilter),
1350    REG_JNI(register_android_graphics_FontFamily),
1351    REG_JNI(register_android_graphics_Interpolator),
1352    REG_JNI(register_android_graphics_LayerRasterizer),
1353    REG_JNI(register_android_graphics_MaskFilter),
1354    REG_JNI(register_android_graphics_Matrix),
1355    REG_JNI(register_android_graphics_Movie),
1356    REG_JNI(register_android_graphics_NinePatch),
1357    REG_JNI(register_android_graphics_Paint),
1358    REG_JNI(register_android_graphics_Path),
1359    REG_JNI(register_android_graphics_PathMeasure),
1360    REG_JNI(register_android_graphics_PathEffect),
1361    REG_JNI(register_android_graphics_Picture),
1362    REG_JNI(register_android_graphics_PorterDuff),
1363    REG_JNI(register_android_graphics_Rasterizer),
1364    REG_JNI(register_android_graphics_Region),
1365    REG_JNI(register_android_graphics_Shader),
1366    REG_JNI(register_android_graphics_SurfaceTexture),
1367    REG_JNI(register_android_graphics_Typeface),
1368    REG_JNI(register_android_graphics_Xfermode),
1369    REG_JNI(register_android_graphics_YuvImage),
1370    REG_JNI(register_android_graphics_pdf_PdfDocument),
1371    REG_JNI(register_android_graphics_pdf_PdfEditor),
1372    REG_JNI(register_android_graphics_pdf_PdfRenderer),
1373
1374    REG_JNI(register_android_database_CursorWindow),
1375    REG_JNI(register_android_database_SQLiteConnection),
1376    REG_JNI(register_android_database_SQLiteGlobal),
1377    REG_JNI(register_android_database_SQLiteDebug),
1378    REG_JNI(register_android_os_Debug),
1379    REG_JNI(register_android_os_FileObserver),
1380    REG_JNI(register_android_os_MessageQueue),
1381    REG_JNI(register_android_os_SELinux),
1382    REG_JNI(register_android_os_Trace),
1383    REG_JNI(register_android_os_UEventObserver),
1384    REG_JNI(register_android_net_LocalSocketImpl),
1385    REG_JNI(register_android_net_NetworkUtils),
1386    REG_JNI(register_android_net_TrafficStats),
1387    REG_JNI(register_android_os_MemoryFile),
1388    REG_JNI(register_com_android_internal_os_Zygote),
1389    REG_JNI(register_com_android_internal_util_VirtualRefBasePtr),
1390    REG_JNI(register_android_hardware_Camera),
1391    REG_JNI(register_android_hardware_camera2_CameraMetadata),
1392    REG_JNI(register_android_hardware_camera2_legacy_LegacyCameraDevice),
1393    REG_JNI(register_android_hardware_camera2_legacy_PerfMeasurement),
1394    REG_JNI(register_android_hardware_camera2_DngCreator),
1395    REG_JNI(register_android_hardware_Radio),
1396    REG_JNI(register_android_hardware_SensorManager),
1397    REG_JNI(register_android_hardware_SerialPort),
1398    REG_JNI(register_android_hardware_SoundTrigger),
1399    REG_JNI(register_android_hardware_UsbDevice),
1400    REG_JNI(register_android_hardware_UsbDeviceConnection),
1401    REG_JNI(register_android_hardware_UsbRequest),
1402    REG_JNI(register_android_hardware_location_ActivityRecognitionHardware),
1403    REG_JNI(register_android_media_AudioRecord),
1404    REG_JNI(register_android_media_AudioSystem),
1405    REG_JNI(register_android_media_AudioTrack),
1406    REG_JNI(register_android_media_JetPlayer),
1407    REG_JNI(register_android_media_RemoteDisplay),
1408    REG_JNI(register_android_media_ToneGenerator),
1409
1410    REG_JNI(register_android_opengl_classes),
1411    REG_JNI(register_android_server_NetworkManagementSocketTagger),
1412    REG_JNI(register_android_ddm_DdmHandleNativeHeap),
1413    REG_JNI(register_android_backup_BackupDataInput),
1414    REG_JNI(register_android_backup_BackupDataOutput),
1415    REG_JNI(register_android_backup_FileBackupHelperBase),
1416    REG_JNI(register_android_backup_BackupHelperDispatcher),
1417    REG_JNI(register_android_app_backup_FullBackup),
1418    REG_JNI(register_android_app_ActivityThread),
1419    REG_JNI(register_android_app_NativeActivity),
1420    REG_JNI(register_android_view_InputChannel),
1421    REG_JNI(register_android_view_InputEventReceiver),
1422    REG_JNI(register_android_view_InputEventSender),
1423    REG_JNI(register_android_view_InputQueue),
1424    REG_JNI(register_android_view_KeyEvent),
1425    REG_JNI(register_android_view_MotionEvent),
1426    REG_JNI(register_android_view_PointerIcon),
1427    REG_JNI(register_android_view_VelocityTracker),
1428
1429    REG_JNI(register_android_content_res_ObbScanner),
1430    REG_JNI(register_android_content_res_Configuration),
1431
1432    REG_JNI(register_android_animation_PropertyValuesHolder),
1433    REG_JNI(register_com_android_internal_content_NativeLibraryHelper),
1434    REG_JNI(register_com_android_internal_net_NetworkStatsFactory),
1435};
1436
1437/*
1438 * Register android native functions with the VM.
1439 */
1440/*static*/ int AndroidRuntime::startReg(JNIEnv* env)
1441{
1442    /*
1443     * This hook causes all future threads created in this process to be
1444     * attached to the JavaVM.  (This needs to go away in favor of JNI
1445     * Attach calls.)
1446     */
1447    androidSetCreateThreadFunc((android_create_thread_fn) javaCreateThreadEtc);
1448
1449    ALOGV("--- registering native functions ---\n");
1450
1451    /*
1452     * Every "register" function calls one or more things that return
1453     * a local reference (e.g. FindClass).  Because we haven't really
1454     * started the VM yet, they're all getting stored in the base frame
1455     * and never released.  Use Push/Pop to manage the storage.
1456     */
1457    env->PushLocalFrame(200);
1458
1459    if (register_jni_procs(gRegJNI, NELEM(gRegJNI), env) < 0) {
1460        env->PopLocalFrame(NULL);
1461        return -1;
1462    }
1463    env->PopLocalFrame(NULL);
1464
1465    //createJavaThread("fubar", quickTest, (void*) "hello");
1466
1467    return 0;
1468}
1469
1470AndroidRuntime* AndroidRuntime::getRuntime()
1471{
1472    return gCurRuntime;
1473}
1474
1475/**
1476 * Used by surface flinger's DdmConnection to register native methods from
1477 * the framework.
1478 */
1479extern "C" jint registerFrameworkNatives(JNIEnv* env) {
1480    return register_jni_procs(gRegJNI, NELEM(gRegJNI), env);
1481}
1482}   // namespace android
1483