AndroidRuntime.cpp revision c0b6c530766eb5f59e321a1fdbf3d27c05560024 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define ATRACE_TAG ATRACE_TAG_DALVIK
18#define LOG_TAG "AndroidRuntime"
19//#define LOG_NDEBUG 0
20
21#include <android_runtime/AndroidRuntime.h>
22#include <binder/IBinder.h>
23#include <binder/IPCThreadState.h>
24#include <binder/IServiceManager.h>
25#include <utils/Log.h>
26#include <utils/misc.h>
27#include <utils/Trace.h>
28#include <binder/Parcel.h>
29#include <utils/threads.h>
30#include <cutils/properties.h>
31
32#include <SkGraphics.h>
33
34#include "jni.h"
35#include "JNIHelp.h"
36#include "JniInvocation.h"
37#include "android_util_Binder.h"
38
39#include <stdio.h>
40#include <signal.h>
41#include <sys/stat.h>
42#include <sys/types.h>
43#include <signal.h>
44#include <dirent.h>
45#include <assert.h>
46
47#include <string>
48#include <vector>
49
50
51using namespace android;
52
53extern int register_android_os_Binder(JNIEnv* env);
54extern int register_android_os_Process(JNIEnv* env);
55extern int register_android_graphics_Bitmap(JNIEnv*);
56extern int register_android_graphics_BitmapFactory(JNIEnv*);
57extern int register_android_graphics_BitmapRegionDecoder(JNIEnv*);
58extern int register_android_graphics_Camera(JNIEnv* env);
59extern int register_android_graphics_CreateJavaOutputStreamAdaptor(JNIEnv* env);
60extern int register_android_graphics_Graphics(JNIEnv* env);
61extern int register_android_graphics_Interpolator(JNIEnv* env);
62extern int register_android_graphics_MaskFilter(JNIEnv* env);
63extern int register_android_graphics_Movie(JNIEnv* env);
64extern int register_android_graphics_NinePatch(JNIEnv*);
65extern int register_android_graphics_PathEffect(JNIEnv* env);
66extern int register_android_graphics_Shader(JNIEnv* env);
67extern int register_android_graphics_Typeface(JNIEnv* env);
68extern int register_android_graphics_YuvImage(JNIEnv* env);
69
70extern int register_com_google_android_gles_jni_EGLImpl(JNIEnv* env);
71extern int register_com_google_android_gles_jni_GLImpl(JNIEnv* env);
72extern int register_android_opengl_jni_EGL14(JNIEnv* env);
73extern int register_android_opengl_jni_EGLExt(JNIEnv* env);
74extern int register_android_opengl_jni_GLES10(JNIEnv* env);
75extern int register_android_opengl_jni_GLES10Ext(JNIEnv* env);
76extern int register_android_opengl_jni_GLES11(JNIEnv* env);
77extern int register_android_opengl_jni_GLES11Ext(JNIEnv* env);
78extern int register_android_opengl_jni_GLES20(JNIEnv* env);
79extern int register_android_opengl_jni_GLES30(JNIEnv* env);
80extern int register_android_opengl_jni_GLES31(JNIEnv* env);
81extern int register_android_opengl_jni_GLES31Ext(JNIEnv* env);
82extern int register_android_opengl_jni_GLES32(JNIEnv* env);
83
84extern int register_android_hardware_Camera(JNIEnv *env);
85extern int register_android_hardware_camera2_CameraMetadata(JNIEnv *env);
86extern int register_android_hardware_camera2_legacy_LegacyCameraDevice(JNIEnv *env);
87extern int register_android_hardware_camera2_legacy_PerfMeasurement(JNIEnv *env);
88extern int register_android_hardware_camera2_DngCreator(JNIEnv *env);
89extern int register_android_hardware_Radio(JNIEnv *env);
90extern int register_android_hardware_SensorManager(JNIEnv *env);
91extern int register_android_hardware_SerialPort(JNIEnv *env);
92extern int register_android_hardware_SoundTrigger(JNIEnv *env);
93extern int register_android_hardware_UsbDevice(JNIEnv *env);
94extern int register_android_hardware_UsbDeviceConnection(JNIEnv *env);
95extern int register_android_hardware_UsbRequest(JNIEnv *env);
96extern int register_android_hardware_location_ActivityRecognitionHardware(JNIEnv* env);
97extern int register_android_hardware_location_ContextHubService(JNIEnv* env);
98
99extern int register_android_media_AudioRecord(JNIEnv *env);
100extern int register_android_media_AudioSystem(JNIEnv *env);
101extern int register_android_media_AudioTrack(JNIEnv *env);
102extern int register_android_media_JetPlayer(JNIEnv *env);
103extern int register_android_media_ToneGenerator(JNIEnv *env);
104
105namespace android {
106
107/*
108 * JNI-based registration functions.  Note these are properly contained in
109 * namespace android.
110 */
111extern int register_android_app_admin_SecurityLog(JNIEnv* env);
112extern int register_android_content_AssetManager(JNIEnv* env);
113extern int register_android_util_EventLog(JNIEnv* env);
114extern int register_android_util_Log(JNIEnv* env);
115extern int register_android_util_MemoryIntArray(JNIEnv* env);
116extern int register_android_util_PathParser(JNIEnv* env);
117extern int register_android_content_StringBlock(JNIEnv* env);
118extern int register_android_content_XmlBlock(JNIEnv* env);
119extern int register_android_graphics_Canvas(JNIEnv* env);
120extern int register_android_graphics_CanvasProperty(JNIEnv* env);
121extern int register_android_graphics_ColorFilter(JNIEnv* env);
122extern int register_android_graphics_DrawFilter(JNIEnv* env);
123extern int register_android_graphics_FontFamily(JNIEnv* env);
124extern int register_android_graphics_LayerRasterizer(JNIEnv*);
125extern int register_android_graphics_Matrix(JNIEnv* env);
126extern int register_android_graphics_Paint(JNIEnv* env);
127extern int register_android_graphics_Path(JNIEnv* env);
128extern int register_android_graphics_PathMeasure(JNIEnv* env);
129extern int register_android_graphics_Picture(JNIEnv*);
130extern int register_android_graphics_PorterDuff(JNIEnv* env);
131extern int register_android_graphics_Rasterizer(JNIEnv* env);
132extern int register_android_graphics_Region(JNIEnv* env);
133extern int register_android_graphics_SurfaceTexture(JNIEnv* env);
134extern int register_android_graphics_Xfermode(JNIEnv* env);
135extern int register_android_graphics_drawable_AnimatedVectorDrawable(JNIEnv* env);
136extern int register_android_graphics_drawable_VectorDrawable(JNIEnv* env);
137extern int register_android_graphics_pdf_PdfDocument(JNIEnv* env);
138extern int register_android_graphics_pdf_PdfEditor(JNIEnv* env);
139extern int register_android_graphics_pdf_PdfRenderer(JNIEnv* env);
140extern int register_android_view_DisplayEventReceiver(JNIEnv* env);
141extern int register_android_view_DisplayListCanvas(JNIEnv* env);
142extern int register_android_view_GraphicBuffer(JNIEnv* env);
143extern int register_android_view_HardwareLayer(JNIEnv* env);
144extern int register_android_view_RenderNode(JNIEnv* env);
145extern int register_android_view_RenderNodeAnimator(JNIEnv* env);
146extern int register_android_view_Surface(JNIEnv* env);
147extern int register_android_view_SurfaceControl(JNIEnv* env);
148extern int register_android_view_SurfaceSession(JNIEnv* env);
149extern int register_android_view_TextureView(JNIEnv* env);
150extern int register_android_view_ThreadedRenderer(JNIEnv* env);
151extern int register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper(JNIEnv *env);
152extern int register_android_database_CursorWindow(JNIEnv* env);
153extern int register_android_database_SQLiteConnection(JNIEnv* env);
154extern int register_android_database_SQLiteGlobal(JNIEnv* env);
155extern int register_android_database_SQLiteDebug(JNIEnv* env);
156extern int register_android_nio_utils(JNIEnv* env);
157extern int register_android_os_Debug(JNIEnv* env);
158extern int register_android_os_HwBinder(JNIEnv *env);
159extern int register_android_os_HwParcel(JNIEnv *env);
160extern int register_android_os_HwRemoteBinder(JNIEnv *env);
161extern int register_android_os_MessageQueue(JNIEnv* env);
162extern int register_android_os_Parcel(JNIEnv* env);
163extern int register_android_os_SELinux(JNIEnv* env);
164extern int register_android_os_SystemProperties(JNIEnv *env);
165extern int register_android_os_SystemClock(JNIEnv* env);
166extern int register_android_os_Trace(JNIEnv* env);
167extern int register_android_os_FileObserver(JNIEnv *env);
168extern int register_android_os_UEventObserver(JNIEnv* env);
169extern int register_android_os_MemoryFile(JNIEnv* env);
170extern int register_android_net_LocalSocketImpl(JNIEnv* env);
171extern int register_android_net_NetworkUtils(JNIEnv* env);
172extern int register_android_net_TrafficStats(JNIEnv* env);
173extern int register_android_text_AndroidCharacter(JNIEnv *env);
174extern int register_android_text_StaticLayout(JNIEnv *env);
175extern int register_android_text_AndroidBidi(JNIEnv *env);
176extern int register_android_opengl_classes(JNIEnv *env);
177extern int register_android_ddm_DdmHandleNativeHeap(JNIEnv *env);
178extern int register_android_server_NetworkManagementSocketTagger(JNIEnv* env);
179extern int register_android_backup_BackupDataInput(JNIEnv *env);
180extern int register_android_backup_BackupDataOutput(JNIEnv *env);
181extern int register_android_backup_FileBackupHelperBase(JNIEnv *env);
182extern int register_android_backup_BackupHelperDispatcher(JNIEnv *env);
183extern int register_android_app_backup_FullBackup(JNIEnv *env);
184extern int register_android_app_Activity(JNIEnv *env);
185extern int register_android_app_ActivityThread(JNIEnv *env);
186extern int register_android_app_ApplicationLoaders(JNIEnv *env);
187extern int register_android_app_NativeActivity(JNIEnv *env);
188extern int register_android_media_RemoteDisplay(JNIEnv *env);
189extern int register_android_util_jar_StrictJarFile(JNIEnv* env);
190extern int register_android_view_InputChannel(JNIEnv* env);
191extern int register_android_view_InputDevice(JNIEnv* env);
192extern int register_android_view_InputEventReceiver(JNIEnv* env);
193extern int register_android_view_InputEventSender(JNIEnv* env);
194extern int register_android_view_InputQueue(JNIEnv* env);
195extern int register_android_view_KeyCharacterMap(JNIEnv *env);
196extern int register_android_view_KeyEvent(JNIEnv* env);
197extern int register_android_view_MotionEvent(JNIEnv* env);
198extern int register_android_view_PointerIcon(JNIEnv* env);
199extern int register_android_view_VelocityTracker(JNIEnv* env);
200extern int register_android_content_res_ObbScanner(JNIEnv* env);
201extern int register_android_content_res_Configuration(JNIEnv* env);
202extern int register_android_animation_PropertyValuesHolder(JNIEnv *env);
203extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env);
204extern int register_com_android_internal_net_NetworkStatsFactory(JNIEnv *env);
205extern int register_com_android_internal_os_PathClassLoaderFactory(JNIEnv* env);
206extern int register_com_android_internal_os_Zygote(JNIEnv *env);
207extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env);
208
209static AndroidRuntime* gCurRuntime = NULL;
210
211/*
212 * Code written in the Java Programming Language calls here from main().
213 */
214static void com_android_internal_os_RuntimeInit_nativeFinishInit(JNIEnv* env, jobject clazz)
215{
216    gCurRuntime->onStarted();
217}
218
219static void com_android_internal_os_RuntimeInit_nativeZygoteInit(JNIEnv* env, jobject clazz)
220{
221    gCurRuntime->onZygoteInit();
222}
223
224static void com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup(JNIEnv* env,
225        jobject clazz, jboolean exitWithoutCleanup)
226{
227    gCurRuntime->setExitWithoutCleanup(exitWithoutCleanup);
228}
229
230/*
231 * JNI registration.
232 */
233static const JNINativeMethod gMethods[] = {
234    { "nativeFinishInit", "()V",
235        (void*) com_android_internal_os_RuntimeInit_nativeFinishInit },
236    { "nativeZygoteInit", "()V",
237        (void*) com_android_internal_os_RuntimeInit_nativeZygoteInit },
238    { "nativeSetExitWithoutCleanup", "(Z)V",
239        (void*) com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup },
240};
241
242int register_com_android_internal_os_RuntimeInit(JNIEnv* env)
243{
244    return jniRegisterNativeMethods(env, "com/android/internal/os/RuntimeInit",
245        gMethods, NELEM(gMethods));
246}
247
248// ----------------------------------------------------------------------
249
250/*static*/ JavaVM* AndroidRuntime::mJavaVM = NULL;
251
252AndroidRuntime::AndroidRuntime(char* argBlockStart, const size_t argBlockLength) :
253        mExitWithoutCleanup(false),
254        mArgBlockStart(argBlockStart),
255        mArgBlockLength(argBlockLength)
256{
257    SkGraphics::Init();
258    // There is also a global font cache, but its budget is specified by
259    // SK_DEFAULT_FONT_CACHE_COUNT_LIMIT and SK_DEFAULT_FONT_CACHE_LIMIT.
260
261    // Pre-allocate enough space to hold a fair number of options.
262    mOptions.setCapacity(20);
263
264    assert(gCurRuntime == NULL);        // one per process
265    gCurRuntime = this;
266}
267
268AndroidRuntime::~AndroidRuntime()
269{
270    SkGraphics::Term();
271}
272
273/*
274 * Register native methods using JNI.
275 */
276/*static*/ int AndroidRuntime::registerNativeMethods(JNIEnv* env,
277    const char* className, const JNINativeMethod* gMethods, int numMethods)
278{
279    return jniRegisterNativeMethods(env, className, gMethods, numMethods);
280}
281
282void AndroidRuntime::setArgv0(const char* argv0, bool setProcName) {
283    if (setProcName) {
284        int len = strlen(argv0);
285        if (len < 15) {
286            pthread_setname_np(pthread_self(), argv0);
287        } else {
288            pthread_setname_np(pthread_self(), argv0 + len - 15);
289        }
290    }
291    memset(mArgBlockStart, 0, mArgBlockLength);
292    strlcpy(mArgBlockStart, argv0, mArgBlockLength);
293}
294
295status_t AndroidRuntime::callMain(const String8& className, jclass clazz,
296    const Vector<String8>& args)
297{
298    JNIEnv* env;
299    jmethodID methodId;
300
301    ALOGD("Calling main entry %s", className.string());
302
303    env = getJNIEnv();
304    if (clazz == NULL || env == NULL) {
305        return UNKNOWN_ERROR;
306    }
307
308    methodId = env->GetStaticMethodID(clazz, "main", "([Ljava/lang/String;)V");
309    if (methodId == NULL) {
310        ALOGE("ERROR: could not find method %s.main(String[])\n", className.string());
311        return UNKNOWN_ERROR;
312    }
313
314    /*
315     * We want to call main() with a String array with our arguments in it.
316     * Create an array and populate it.
317     */
318    jclass stringClass;
319    jobjectArray strArray;
320
321    const size_t numArgs = args.size();
322    stringClass = env->FindClass("java/lang/String");
323    strArray = env->NewObjectArray(numArgs, stringClass, NULL);
324
325    for (size_t i = 0; i < numArgs; i++) {
326        jstring argStr = env->NewStringUTF(args[i].string());
327        env->SetObjectArrayElement(strArray, i, argStr);
328    }
329
330    env->CallStaticVoidMethod(clazz, methodId, strArray);
331    return NO_ERROR;
332}
333
334/*
335 * The VM calls this through the "exit" hook.
336 */
337static void runtime_exit(int code)
338{
339    gCurRuntime->exit(code);
340}
341
342/*
343 * The VM calls this through the "vfprintf" hook.
344 *
345 * We ignore "fp" and just write the results to the log file.
346 */
347static void runtime_vfprintf(FILE* fp, const char* format, va_list ap)
348{
349    LOG_PRI_VA(ANDROID_LOG_INFO, "vm-printf", format, ap);
350}
351
352/**
353 * The VM calls this when mutex contention debugging is enabled to
354 * determine whether or not the blocked thread was a "sensitive thread"
355 * for user responsiveness/smoothess.
356 *
357 * Our policy for this is whether or not we're tracing any StrictMode
358 * events on this thread (which we might've inherited via Binder calls
359 * into us)
360 */
361static bool runtime_isSensitiveThread() {
362    IPCThreadState* state = IPCThreadState::selfOrNull();
363    return state && state->getStrictModePolicy() != 0;
364}
365
366static int hasDir(const char* dir)
367{
368    struct stat s;
369    int res = stat(dir, &s);
370    if (res == 0) {
371        return S_ISDIR(s.st_mode);
372    }
373    return 0;
374}
375
376static bool hasFile(const char* file) {
377    struct stat s;
378    int res = stat(file, &s);
379    if (res == 0) {
380        return S_ISREG(s.st_mode);
381    }
382    return false;
383}
384
385// Convenience wrapper over the property API that returns an
386// std::string.
387std::string getProperty(const char* key, const char* defaultValue) {
388    std::vector<char> temp(PROPERTY_VALUE_MAX);
389    const int len = property_get(key, &temp[0], defaultValue);
390    if (len < 0) {
391        return "";
392    }
393    return std::string(&temp[0], len);
394}
395
396/*
397 * Read the persistent locale. Inspects the following system properties
398 * (in order) and returns the first non-empty property in the list :
399 *
400 * (1) persist.sys.locale
401 * (2) persist.sys.language/country/localevar (country and localevar are
402 * inspected iff. language is non-empty.
403 * (3) ro.product.locale
404 * (4) ro.product.locale.language/region
405 *
406 * Note that we need to inspect persist.sys.language/country/localevar to
407 * preserve language settings for devices that are upgrading from Lollipop
408 * to M. The same goes for ro.product.locale.language/region as well.
409 */
410const std::string readLocale()
411{
412    const std::string locale = getProperty("persist.sys.locale", "");
413    if (!locale.empty()) {
414        return locale;
415    }
416
417    const std::string language = getProperty("persist.sys.language", "");
418    if (!language.empty()) {
419        const std::string country = getProperty("persist.sys.country", "");
420        const std::string variant = getProperty("persist.sys.localevar", "");
421
422        std::string out = language;
423        if (!country.empty()) {
424            out = out + "-" + country;
425        }
426
427        if (!variant.empty()) {
428            out = out + "-" + variant;
429        }
430
431        return out;
432    }
433
434    const std::string productLocale = getProperty("ro.product.locale", "");
435    if (!productLocale.empty()) {
436        return productLocale;
437    }
438
439    // If persist.sys.locale and ro.product.locale are missing,
440    // construct a locale value from the individual locale components.
441    const std::string productLanguage = getProperty("ro.product.locale.language", "en");
442    const std::string productRegion = getProperty("ro.product.locale.region", "US");
443
444    return productLanguage + "-" + productRegion;
445}
446
447void AndroidRuntime::addOption(const char* optionString, void* extraInfo)
448{
449    JavaVMOption opt;
450    opt.optionString = optionString;
451    opt.extraInfo = extraInfo;
452    mOptions.add(opt);
453}
454
455/*
456 * Parse a property containing space-separated options that should be
457 * passed directly to the VM, e.g. "-Xmx32m -verbose:gc -Xregenmap".
458 *
459 * This will cut up "extraOptsBuf" as we chop it into individual options.
460 *
461 * If "quotingArg" is non-null, it is passed before each extra option in mOptions.
462 *
463 * Adds the strings, if any, to mOptions.
464 */
465void AndroidRuntime::parseExtraOpts(char* extraOptsBuf, const char* quotingArg)
466{
467    char* start = extraOptsBuf;
468    char* end = NULL;
469    while (*start != '\0') {
470        while (*start == ' ')                   /* skip leading whitespace */
471            start++;
472        if (*start == '\0')                     /* was trailing ws, bail */
473            break;
474
475        end = start+1;
476        while (*end != ' ' && *end != '\0')     /* find end of token */
477            end++;
478        if (*end == ' ')
479            *end++ = '\0';          /* mark end, advance to indicate more */
480
481        if (quotingArg != NULL) {
482            addOption(quotingArg);
483        }
484        addOption(start);
485        start = end;
486    }
487}
488
489/*
490 * Reads a "property" into "buffer" with a default of "defaultArg". If
491 * the property is non-empty, it is treated as a runtime option such
492 * as "-Xmx32m".
493 *
494 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
495 *
496 * If an argument is found, it is added to mOptions.
497 *
498 * If an option is found, it is added to mOptions and true is
499 * returned. Otherwise false is returned.
500 */
501bool AndroidRuntime::parseRuntimeOption(const char* property,
502                                        char* buffer,
503                                        const char* runtimeArg,
504                                        const char* defaultArg)
505{
506    strcpy(buffer, runtimeArg);
507    size_t runtimeArgLen = strlen(runtimeArg);
508    property_get(property, buffer+runtimeArgLen, defaultArg);
509    if (buffer[runtimeArgLen] == '\0') {
510        return false;
511    }
512    addOption(buffer);
513    return true;
514}
515
516/*
517 * Reads a "property" into "buffer". If the property is non-empty, it
518 * is treated as a dex2oat compiler option that should be
519 * passed as a quoted option, e.g. "-Ximage-compiler-option --compiler-filter=verify-none".
520 *
521 * The "compilerArg" is a prefix for the option such as "--compiler-filter=".
522 *
523 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
524 *
525 * If an option is found, it is added to mOptions and true is
526 * returned. Otherwise false is returned.
527 */
528bool AndroidRuntime::parseCompilerOption(const char* property,
529                                         char* buffer,
530                                         const char* compilerArg,
531                                         const char* quotingArg)
532{
533    strcpy(buffer, compilerArg);
534    size_t compilerArgLen = strlen(compilerArg);
535    property_get(property, buffer+compilerArgLen, "");
536    if (buffer[compilerArgLen] == '\0') {
537        return false;
538    }
539    addOption(quotingArg);
540    addOption(buffer);
541    return true;
542}
543
544/*
545 * Reads a "property" into "buffer". If the property is non-empty, it
546 * is treated as a dex2oat compiler runtime option that should be
547 * passed as a quoted option, e.g. "-Ximage-compiler-option
548 * --runtime-arg -Ximage-compiler-option -Xmx32m".
549 *
550 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
551 *
552 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
553 *
554 * If an option is found, it is added to mOptions and true is
555 * returned. Otherwise false is returned.
556 */
557bool AndroidRuntime::parseCompilerRuntimeOption(const char* property,
558                                                char* buffer,
559                                                const char* runtimeArg,
560                                                const char* quotingArg)
561{
562    strcpy(buffer, runtimeArg);
563    size_t runtimeArgLen = strlen(runtimeArg);
564    property_get(property, buffer+runtimeArgLen, "");
565    if (buffer[runtimeArgLen] == '\0') {
566        return false;
567    }
568    addOption(quotingArg);
569    addOption("--runtime-arg");
570    addOption(quotingArg);
571    addOption(buffer);
572    return true;
573}
574
575/*
576 * Start the Dalvik Virtual Machine.
577 *
578 * Various arguments, most determined by system properties, are passed in.
579 * The "mOptions" vector is updated.
580 *
581 * CAUTION: when adding options in here, be careful not to put the
582 * char buffer inside a nested scope.  Adding the buffer to the
583 * options using mOptions.add() does not copy the buffer, so if the
584 * buffer goes out of scope the option may be overwritten.  It's best
585 * to put the buffer at the top of the function so that it is more
586 * unlikely that someone will surround it in a scope at a later time
587 * and thus introduce a bug.
588 *
589 * Returns 0 on success.
590 */
591int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv, bool zygote)
592{
593    JavaVMInitArgs initArgs;
594    char propBuf[PROPERTY_VALUE_MAX];
595    char stackTraceFileBuf[sizeof("-Xstacktracefile:")-1 + PROPERTY_VALUE_MAX];
596    char jniOptsBuf[sizeof("-Xjniopts:")-1 + PROPERTY_VALUE_MAX];
597    char heapstartsizeOptsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
598    char heapsizeOptsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
599    char heapgrowthlimitOptsBuf[sizeof("-XX:HeapGrowthLimit=")-1 + PROPERTY_VALUE_MAX];
600    char heapminfreeOptsBuf[sizeof("-XX:HeapMinFree=")-1 + PROPERTY_VALUE_MAX];
601    char heapmaxfreeOptsBuf[sizeof("-XX:HeapMaxFree=")-1 + PROPERTY_VALUE_MAX];
602    char usejitOptsBuf[sizeof("-Xusejit:")-1 + PROPERTY_VALUE_MAX];
603    char jitmaxsizeOptsBuf[sizeof("-Xjitmaxsize:")-1 + PROPERTY_VALUE_MAX];
604    char jitinitialsizeOptsBuf[sizeof("-Xjitinitialsize:")-1 + PROPERTY_VALUE_MAX];
605    char jitthresholdOptsBuf[sizeof("-Xjitthreshold:")-1 + PROPERTY_VALUE_MAX];
606    char useJitProfilesOptsBuf[sizeof("-Xjitsaveprofilinginfo:")-1 + PROPERTY_VALUE_MAX];
607    char jitprithreadweightOptBuf[sizeof("-Xjitprithreadweight:")-1 + PROPERTY_VALUE_MAX];
608    char jittransitionweightOptBuf[sizeof("-Xjittransitionweight:")-1 + PROPERTY_VALUE_MAX];
609    char gctypeOptsBuf[sizeof("-Xgc:")-1 + PROPERTY_VALUE_MAX];
610    char backgroundgcOptsBuf[sizeof("-XX:BackgroundGC=")-1 + PROPERTY_VALUE_MAX];
611    char heaptargetutilizationOptsBuf[sizeof("-XX:HeapTargetUtilization=")-1 + PROPERTY_VALUE_MAX];
612    char cachePruneBuf[sizeof("-Xzygote-max-boot-retry=")-1 + PROPERTY_VALUE_MAX];
613    char dex2oatXmsImageFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
614    char dex2oatXmxImageFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
615    char dex2oatXmsFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
616    char dex2oatXmxFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
617    char dex2oatCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
618    char dex2oatImageCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
619    char dex2oatThreadsBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
620    char dex2oatThreadsImageBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
621    char dex2oat_isa_variant_key[PROPERTY_KEY_MAX];
622    char dex2oat_isa_variant[sizeof("--instruction-set-variant=") -1 + PROPERTY_VALUE_MAX];
623    char dex2oat_isa_features_key[PROPERTY_KEY_MAX];
624    char dex2oat_isa_features[sizeof("--instruction-set-features=") -1 + PROPERTY_VALUE_MAX];
625    char dex2oatFlagsBuf[PROPERTY_VALUE_MAX];
626    char dex2oatImageFlagsBuf[PROPERTY_VALUE_MAX];
627    char extraOptsBuf[PROPERTY_VALUE_MAX];
628    char voldDecryptBuf[PROPERTY_VALUE_MAX];
629    enum {
630      kEMDefault,
631      kEMIntPortable,
632      kEMIntFast,
633      kEMJitCompiler,
634    } executionMode = kEMDefault;
635    char localeOption[sizeof("-Duser.locale=") + PROPERTY_VALUE_MAX];
636    char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:")-1 + PROPERTY_VALUE_MAX];
637    char nativeBridgeLibrary[sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX];
638    char cpuAbiListBuf[sizeof("--cpu-abilist=") + PROPERTY_VALUE_MAX];
639    char methodTraceFileBuf[sizeof("-Xmethod-trace-file:") + PROPERTY_VALUE_MAX];
640    char methodTraceFileSizeBuf[sizeof("-Xmethod-trace-file-size:") + PROPERTY_VALUE_MAX];
641    char fingerprintBuf[sizeof("-Xfingerprint:") + PROPERTY_VALUE_MAX];
642
643    bool checkJni = false;
644    property_get("dalvik.vm.checkjni", propBuf, "");
645    if (strcmp(propBuf, "true") == 0) {
646        checkJni = true;
647    } else if (strcmp(propBuf, "false") != 0) {
648        /* property is neither true nor false; fall back on kernel parameter */
649        property_get("ro.kernel.android.checkjni", propBuf, "");
650        if (propBuf[0] == '1') {
651            checkJni = true;
652        }
653    }
654    ALOGD("CheckJNI is %s\n", checkJni ? "ON" : "OFF");
655    if (checkJni) {
656        /* extended JNI checking */
657        addOption("-Xcheck:jni");
658
659        /* with -Xcheck:jni, this provides a JNI function call trace */
660        //addOption("-verbose:jni");
661    }
662
663    property_get("dalvik.vm.execution-mode", propBuf, "");
664    if (strcmp(propBuf, "int:portable") == 0) {
665        executionMode = kEMIntPortable;
666    } else if (strcmp(propBuf, "int:fast") == 0) {
667        executionMode = kEMIntFast;
668    } else if (strcmp(propBuf, "int:jit") == 0) {
669        executionMode = kEMJitCompiler;
670    }
671
672    parseRuntimeOption("dalvik.vm.stack-trace-file", stackTraceFileBuf, "-Xstacktracefile:");
673
674    strcpy(jniOptsBuf, "-Xjniopts:");
675    if (parseRuntimeOption("dalvik.vm.jniopts", jniOptsBuf, "-Xjniopts:")) {
676        ALOGI("JNI options: '%s'\n", jniOptsBuf);
677    }
678
679    /* route exit() to our handler */
680    addOption("exit", (void*) runtime_exit);
681
682    /* route fprintf() to our handler */
683    addOption("vfprintf", (void*) runtime_vfprintf);
684
685    /* register the framework-specific "is sensitive thread" hook */
686    addOption("sensitiveThread", (void*) runtime_isSensitiveThread);
687
688    /* enable verbose; standard options are { jni, gc, class } */
689    //addOption("-verbose:jni");
690    addOption("-verbose:gc");
691    //addOption("-verbose:class");
692
693    /*
694     * The default starting and maximum size of the heap.  Larger
695     * values should be specified in a product property override.
696     */
697    parseRuntimeOption("dalvik.vm.heapstartsize", heapstartsizeOptsBuf, "-Xms", "4m");
698    parseRuntimeOption("dalvik.vm.heapsize", heapsizeOptsBuf, "-Xmx", "16m");
699
700    parseRuntimeOption("dalvik.vm.heapgrowthlimit", heapgrowthlimitOptsBuf, "-XX:HeapGrowthLimit=");
701    parseRuntimeOption("dalvik.vm.heapminfree", heapminfreeOptsBuf, "-XX:HeapMinFree=");
702    parseRuntimeOption("dalvik.vm.heapmaxfree", heapmaxfreeOptsBuf, "-XX:HeapMaxFree=");
703    parseRuntimeOption("dalvik.vm.heaptargetutilization",
704                       heaptargetutilizationOptsBuf,
705                       "-XX:HeapTargetUtilization=");
706
707    /*
708     * JIT related options.
709     */
710    parseRuntimeOption("dalvik.vm.usejit", usejitOptsBuf, "-Xusejit:");
711    parseRuntimeOption("dalvik.vm.jitmaxsize", jitmaxsizeOptsBuf, "-Xjitmaxsize:");
712    parseRuntimeOption("dalvik.vm.jitinitialsize", jitinitialsizeOptsBuf, "-Xjitinitialsize:");
713    parseRuntimeOption("dalvik.vm.jitthreshold", jitthresholdOptsBuf, "-Xjitthreshold:");
714    property_get("dalvik.vm.usejitprofiles", useJitProfilesOptsBuf, "");
715    if (strcmp(useJitProfilesOptsBuf, "true") == 0) {
716        addOption("-Xjitsaveprofilinginfo");
717    }
718
719    parseRuntimeOption("dalvik.vm.jitprithreadweight",
720                       jitprithreadweightOptBuf,
721                       "-Xjitprithreadweight:");
722
723    parseRuntimeOption("dalvik.vm.jittransitionweight",
724                       jittransitionweightOptBuf,
725                       "-Xjittransitionweight:");
726
727    property_get("ro.config.low_ram", propBuf, "");
728    if (strcmp(propBuf, "true") == 0) {
729      addOption("-XX:LowMemoryMode");
730    }
731
732    parseRuntimeOption("dalvik.vm.gctype", gctypeOptsBuf, "-Xgc:");
733    parseRuntimeOption("dalvik.vm.backgroundgctype", backgroundgcOptsBuf, "-XX:BackgroundGC=");
734
735    /*
736     * Enable debugging only for apps forked from zygote.
737     * Set suspend=y to pause during VM init and use android ADB transport.
738     */
739    if (zygote) {
740      addOption("-agentlib:jdwp=transport=dt_android_adb,suspend=n,server=y");
741    }
742
743    parseRuntimeOption("dalvik.vm.lockprof.threshold",
744                       lockProfThresholdBuf,
745                       "-Xlockprofthreshold:");
746
747    if (executionMode == kEMIntPortable) {
748        addOption("-Xint:portable");
749    } else if (executionMode == kEMIntFast) {
750        addOption("-Xint:fast");
751    } else if (executionMode == kEMJitCompiler) {
752        addOption("-Xint:jit");
753    }
754
755    // If we are booting without the real /data, don't spend time compiling.
756    property_get("vold.decrypt", voldDecryptBuf, "");
757    bool skip_compilation = ((strcmp(voldDecryptBuf, "trigger_restart_min_framework") == 0) ||
758                             (strcmp(voldDecryptBuf, "1") == 0));
759
760    // Extra options for boot.art/boot.oat image generation.
761    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xms", dex2oatXmsImageFlagsBuf,
762                               "-Xms", "-Ximage-compiler-option");
763    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xmx", dex2oatXmxImageFlagsBuf,
764                               "-Xmx", "-Ximage-compiler-option");
765    if (skip_compilation) {
766        addOption("-Ximage-compiler-option");
767        addOption("--compiler-filter=verify-none");
768    } else {
769        parseCompilerOption("dalvik.vm.image-dex2oat-filter", dex2oatImageCompilerFilterBuf,
770                            "--compiler-filter=", "-Ximage-compiler-option");
771    }
772
773    // Make sure there is a preloaded-classes file.
774    if (!hasFile("/system/etc/preloaded-classes")) {
775        ALOGE("Missing preloaded-classes file, /system/etc/preloaded-classes not found: %s\n",
776              strerror(errno));
777        return -1;
778    }
779    addOption("-Ximage-compiler-option");
780    addOption("--image-classes=/system/etc/preloaded-classes");
781
782    // If there is a compiled-classes file, push it.
783    if (hasFile("/system/etc/compiled-classes")) {
784        addOption("-Ximage-compiler-option");
785        addOption("--compiled-classes=/system/etc/compiled-classes");
786    }
787
788    property_get("dalvik.vm.image-dex2oat-flags", dex2oatImageFlagsBuf, "");
789    parseExtraOpts(dex2oatImageFlagsBuf, "-Ximage-compiler-option");
790
791    // Extra options for DexClassLoader.
792    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xms", dex2oatXmsFlagsBuf,
793                               "-Xms", "-Xcompiler-option");
794    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xmx", dex2oatXmxFlagsBuf,
795                               "-Xmx", "-Xcompiler-option");
796    if (skip_compilation) {
797        addOption("-Xcompiler-option");
798        addOption("--compiler-filter=verify-none");
799
800        // We skip compilation when a minimal runtime is brought up for decryption. In that case
801        // /data is temporarily backed by a tmpfs, which is usually small.
802        // If the system image contains prebuilts, they will be relocated into the tmpfs. In this
803        // specific situation it is acceptable to *not* relocate and run out of the prebuilts
804        // directly instead.
805        addOption("--runtime-arg");
806        addOption("-Xnorelocate");
807    } else {
808        parseCompilerOption("dalvik.vm.dex2oat-filter", dex2oatCompilerFilterBuf,
809                            "--compiler-filter=", "-Xcompiler-option");
810    }
811    parseCompilerOption("dalvik.vm.dex2oat-threads", dex2oatThreadsBuf, "-j", "-Xcompiler-option");
812    parseCompilerOption("dalvik.vm.image-dex2oat-threads", dex2oatThreadsImageBuf, "-j",
813                        "-Ximage-compiler-option");
814
815    // The runtime will compile a boot image, when necessary, not using installd. Thus, we need to
816    // pass the instruction-set-features/variant as an image-compiler-option.
817    // TODO: Find a better way for the instruction-set.
818#if defined(__arm__)
819    constexpr const char* instruction_set = "arm";
820#elif defined(__aarch64__)
821    constexpr const char* instruction_set = "arm64";
822#elif defined(__mips__) && !defined(__LP64__)
823    constexpr const char* instruction_set = "mips";
824#elif defined(__mips__) && defined(__LP64__)
825    constexpr const char* instruction_set = "mips64";
826#elif defined(__i386__)
827    constexpr const char* instruction_set = "x86";
828#elif defined(__x86_64__)
829    constexpr const char* instruction_set = "x86_64";
830#else
831    constexpr const char* instruction_set = "unknown";
832#endif
833    // Note: it is OK to reuse the buffer, as the values are exactly the same between
834    //       * compiler-option, used for runtime compilation (DexClassLoader)
835    //       * image-compiler-option, used for boot-image compilation on device
836
837    // Copy the variant.
838    sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set);
839    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
840                        "--instruction-set-variant=", "-Ximage-compiler-option");
841    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
842                        "--instruction-set-variant=", "-Xcompiler-option");
843    // Copy the features.
844    sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set);
845    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
846                        "--instruction-set-features=", "-Ximage-compiler-option");
847    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
848                        "--instruction-set-features=", "-Xcompiler-option");
849
850
851    property_get("dalvik.vm.dex2oat-flags", dex2oatFlagsBuf, "");
852    parseExtraOpts(dex2oatFlagsBuf, "-Xcompiler-option");
853
854    /* extra options; parse this late so it overrides others */
855    property_get("dalvik.vm.extra-opts", extraOptsBuf, "");
856    parseExtraOpts(extraOptsBuf, NULL);
857
858    /* Set the properties for locale */
859    {
860        strcpy(localeOption, "-Duser.locale=");
861        const std::string locale = readLocale();
862        strncat(localeOption, locale.c_str(), PROPERTY_VALUE_MAX);
863        addOption(localeOption);
864    }
865
866    // Trace files are stored in /data/misc/trace which is writable only in debug mode.
867    property_get("ro.debuggable", propBuf, "0");
868    if (strcmp(propBuf, "1") == 0) {
869        property_get("dalvik.vm.method-trace", propBuf, "false");
870        if (strcmp(propBuf, "true") == 0) {
871            addOption("-Xmethod-trace");
872            parseRuntimeOption("dalvik.vm.method-trace-file",
873                               methodTraceFileBuf,
874                               "-Xmethod-trace-file:");
875            parseRuntimeOption("dalvik.vm.method-trace-file-siz",
876                               methodTraceFileSizeBuf,
877                               "-Xmethod-trace-file-size:");
878            property_get("dalvik.vm.method-trace-stream", propBuf, "false");
879            if (strcmp(propBuf, "true") == 0) {
880                addOption("-Xmethod-trace-stream");
881            }
882        }
883    }
884
885    // Native bridge library. "0" means that native bridge is disabled.
886    property_get("ro.dalvik.vm.native.bridge", propBuf, "");
887    if (propBuf[0] == '\0') {
888        ALOGW("ro.dalvik.vm.native.bridge is not expected to be empty");
889    } else if (strcmp(propBuf, "0") != 0) {
890        snprintf(nativeBridgeLibrary, sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX,
891                 "-XX:NativeBridge=%s", propBuf);
892        addOption(nativeBridgeLibrary);
893    }
894
895#if defined(__LP64__)
896    const char* cpu_abilist_property_name = "ro.product.cpu.abilist64";
897#else
898    const char* cpu_abilist_property_name = "ro.product.cpu.abilist32";
899#endif  // defined(__LP64__)
900    property_get(cpu_abilist_property_name, propBuf, "");
901    if (propBuf[0] == '\0') {
902        ALOGE("%s is not expected to be empty", cpu_abilist_property_name);
903        return -1;
904    }
905    snprintf(cpuAbiListBuf, sizeof(cpuAbiListBuf), "--cpu-abilist=%s", propBuf);
906    addOption(cpuAbiListBuf);
907
908    // Dalvik-cache pruning counter.
909    parseRuntimeOption("dalvik.vm.zygote.max-boot-retry", cachePruneBuf,
910                       "-Xzygote-max-boot-retry=");
911
912    /*
913     * When running with debug.generate-debug-info, add --generate-debug-info to
914     * the compiler options so that the boot image, if it is compiled on device,
915     * will include native debugging information.
916     */
917    property_get("debug.generate-debug-info", propBuf, "");
918    if (strcmp(propBuf, "true") == 0) {
919        addOption("-Xcompiler-option");
920        addOption("--generate-debug-info");
921        addOption("-Ximage-compiler-option");
922        addOption("--generate-debug-info");
923    }
924
925    /*
926     * Retrieve the build fingerprint and provide it to the runtime. That way, ANR dumps will
927     * contain the fingerprint and can be parsed.
928     */
929    parseRuntimeOption("ro.build.fingerprint", fingerprintBuf, "-Xfingerprint:");
930
931    initArgs.version = JNI_VERSION_1_4;
932    initArgs.options = mOptions.editArray();
933    initArgs.nOptions = mOptions.size();
934    initArgs.ignoreUnrecognized = JNI_FALSE;
935
936    /*
937     * Initialize the VM.
938     *
939     * The JavaVM* is essentially per-process, and the JNIEnv* is per-thread.
940     * If this call succeeds, the VM is ready, and we can start issuing
941     * JNI calls.
942     */
943    if (JNI_CreateJavaVM(pJavaVM, pEnv, &initArgs) < 0) {
944        ALOGE("JNI_CreateJavaVM failed\n");
945        return -1;
946    }
947
948    return 0;
949}
950
951char* AndroidRuntime::toSlashClassName(const char* className)
952{
953    char* result = strdup(className);
954    for (char* cp = result; *cp != '\0'; cp++) {
955        if (*cp == '.') {
956            *cp = '/';
957        }
958    }
959    return result;
960}
961
962/** Create a Java string from an ASCII or Latin-1 string */
963jstring AndroidRuntime::NewStringLatin1(JNIEnv* env, const char* bytes) {
964    if (!bytes) return NULL;
965    int length = strlen(bytes);
966    jchar* buffer = (jchar *)alloca(length * sizeof(jchar));
967    if (!buffer) return NULL;
968    jchar* chp = buffer;
969    for (int i = 0; i < length; i++) {
970        *chp++ = *bytes++;
971    }
972    return env->NewString(buffer, length);
973}
974
975
976/*
977 * Start the Android runtime.  This involves starting the virtual machine
978 * and calling the "static void main(String[] args)" method in the class
979 * named by "className".
980 *
981 * Passes the main function two arguments, the class name and the specified
982 * options string.
983 */
984void AndroidRuntime::start(const char* className, const Vector<String8>& options, bool zygote)
985{
986    ALOGD(">>>>>> START %s uid %d <<<<<<\n",
987            className != NULL ? className : "(unknown)", getuid());
988
989    static const String8 startSystemServer("start-system-server");
990
991    /*
992     * 'startSystemServer == true' means runtime is obsolete and not run from
993     * init.rc anymore, so we print out the boot start event here.
994     */
995    for (size_t i = 0; i < options.size(); ++i) {
996        if (options[i] == startSystemServer) {
997           /* track our progress through the boot sequence */
998           const int LOG_BOOT_PROGRESS_START = 3000;
999           LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START,  ns2ms(systemTime(SYSTEM_TIME_MONOTONIC)));
1000        }
1001    }
1002
1003    const char* rootDir = getenv("ANDROID_ROOT");
1004    if (rootDir == NULL) {
1005        rootDir = "/system";
1006        if (!hasDir("/system")) {
1007            LOG_FATAL("No root directory specified, and /android does not exist.");
1008            return;
1009        }
1010        setenv("ANDROID_ROOT", rootDir, 1);
1011    }
1012
1013    //const char* kernelHack = getenv("LD_ASSUME_KERNEL");
1014    //ALOGD("Found LD_ASSUME_KERNEL='%s'\n", kernelHack);
1015
1016    /* start the virtual machine */
1017    JniInvocation jni_invocation;
1018    jni_invocation.Init(NULL);
1019    JNIEnv* env;
1020    if (startVm(&mJavaVM, &env, zygote) != 0) {
1021        return;
1022    }
1023    onVmCreated(env);
1024
1025    /*
1026     * Register android functions.
1027     */
1028    if (startReg(env) < 0) {
1029        ALOGE("Unable to register all android natives\n");
1030        return;
1031    }
1032
1033    /*
1034     * We want to call main() with a String array with arguments in it.
1035     * At present we have two arguments, the class name and an option string.
1036     * Create an array to hold them.
1037     */
1038    jclass stringClass;
1039    jobjectArray strArray;
1040    jstring classNameStr;
1041
1042    stringClass = env->FindClass("java/lang/String");
1043    assert(stringClass != NULL);
1044    strArray = env->NewObjectArray(options.size() + 1, stringClass, NULL);
1045    assert(strArray != NULL);
1046    classNameStr = env->NewStringUTF(className);
1047    assert(classNameStr != NULL);
1048    env->SetObjectArrayElement(strArray, 0, classNameStr);
1049
1050    for (size_t i = 0; i < options.size(); ++i) {
1051        jstring optionsStr = env->NewStringUTF(options.itemAt(i).string());
1052        assert(optionsStr != NULL);
1053        env->SetObjectArrayElement(strArray, i + 1, optionsStr);
1054    }
1055
1056    /*
1057     * Start VM.  This thread becomes the main thread of the VM, and will
1058     * not return until the VM exits.
1059     */
1060    char* slashClassName = toSlashClassName(className);
1061    jclass startClass = env->FindClass(slashClassName);
1062    if (startClass == NULL) {
1063        ALOGE("JavaVM unable to locate class '%s'\n", slashClassName);
1064        /* keep going */
1065    } else {
1066        jmethodID startMeth = env->GetStaticMethodID(startClass, "main",
1067            "([Ljava/lang/String;)V");
1068        if (startMeth == NULL) {
1069            ALOGE("JavaVM unable to find main() in '%s'\n", className);
1070            /* keep going */
1071        } else {
1072            env->CallStaticVoidMethod(startClass, startMeth, strArray);
1073
1074#if 0
1075            if (env->ExceptionCheck())
1076                threadExitUncaughtException(env);
1077#endif
1078        }
1079    }
1080    free(slashClassName);
1081
1082    ALOGD("Shutting down VM\n");
1083    if (mJavaVM->DetachCurrentThread() != JNI_OK)
1084        ALOGW("Warning: unable to detach main thread\n");
1085    if (mJavaVM->DestroyJavaVM() != 0)
1086        ALOGW("Warning: VM did not shut down cleanly\n");
1087}
1088
1089void AndroidRuntime::exit(int code)
1090{
1091    if (mExitWithoutCleanup) {
1092        ALOGI("VM exiting with result code %d, cleanup skipped.", code);
1093        ::_exit(code);
1094    } else {
1095        ALOGI("VM exiting with result code %d.", code);
1096        onExit(code);
1097        ::exit(code);
1098    }
1099}
1100
1101void AndroidRuntime::onVmCreated(JNIEnv* env)
1102{
1103    // If AndroidRuntime had anything to do here, we'd have done it in 'start'.
1104}
1105
1106/*
1107 * Get the JNIEnv pointer for this thread.
1108 *
1109 * Returns NULL if the slot wasn't allocated or populated.
1110 */
1111/*static*/ JNIEnv* AndroidRuntime::getJNIEnv()
1112{
1113    JNIEnv* env;
1114    JavaVM* vm = AndroidRuntime::getJavaVM();
1115    assert(vm != NULL);
1116
1117    if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK)
1118        return NULL;
1119    return env;
1120}
1121
1122/*
1123 * Makes the current thread visible to the VM.
1124 *
1125 * The JNIEnv pointer returned is only valid for the current thread, and
1126 * thus must be tucked into thread-local storage.
1127 */
1128static int javaAttachThread(const char* threadName, JNIEnv** pEnv)
1129{
1130    JavaVMAttachArgs args;
1131    JavaVM* vm;
1132    jint result;
1133
1134    vm = AndroidRuntime::getJavaVM();
1135    assert(vm != NULL);
1136
1137    args.version = JNI_VERSION_1_4;
1138    args.name = (char*) threadName;
1139    args.group = NULL;
1140
1141    result = vm->AttachCurrentThread(pEnv, (void*) &args);
1142    if (result != JNI_OK)
1143        ALOGI("NOTE: attach of thread '%s' failed\n", threadName);
1144
1145    return result;
1146}
1147
1148/*
1149 * Detach the current thread from the set visible to the VM.
1150 */
1151static int javaDetachThread(void)
1152{
1153    JavaVM* vm;
1154    jint result;
1155
1156    vm = AndroidRuntime::getJavaVM();
1157    assert(vm != NULL);
1158
1159    result = vm->DetachCurrentThread();
1160    if (result != JNI_OK)
1161        ALOGE("ERROR: thread detach failed\n");
1162    return result;
1163}
1164
1165/*
1166 * When starting a native thread that will be visible from the VM, we
1167 * bounce through this to get the right attach/detach action.
1168 * Note that this function calls free(args)
1169 */
1170/*static*/ int AndroidRuntime::javaThreadShell(void* args) {
1171    void* start = ((void**)args)[0];
1172    void* userData = ((void **)args)[1];
1173    char* name = (char*) ((void **)args)[2];        // we own this storage
1174    free(args);
1175    JNIEnv* env;
1176    int result;
1177
1178    /* hook us into the VM */
1179    if (javaAttachThread(name, &env) != JNI_OK)
1180        return -1;
1181
1182    /* start the thread running */
1183    result = (*(android_thread_func_t)start)(userData);
1184
1185    /* unhook us */
1186    javaDetachThread();
1187    free(name);
1188
1189    return result;
1190}
1191
1192/*
1193 * This is invoked from androidCreateThreadEtc() via the callback
1194 * set with androidSetCreateThreadFunc().
1195 *
1196 * We need to create the new thread in such a way that it gets hooked
1197 * into the VM before it really starts executing.
1198 */
1199/*static*/ int AndroidRuntime::javaCreateThreadEtc(
1200                                android_thread_func_t entryFunction,
1201                                void* userData,
1202                                const char* threadName,
1203                                int32_t threadPriority,
1204                                size_t threadStackSize,
1205                                android_thread_id_t* threadId)
1206{
1207    void** args = (void**) malloc(3 * sizeof(void*));   // javaThreadShell must free
1208    int result;
1209
1210    LOG_ALWAYS_FATAL_IF(threadName == nullptr, "threadName not provided to javaCreateThreadEtc");
1211
1212    args[0] = (void*) entryFunction;
1213    args[1] = userData;
1214    args[2] = (void*) strdup(threadName);   // javaThreadShell must free
1215
1216    result = androidCreateRawThreadEtc(AndroidRuntime::javaThreadShell, args,
1217        threadName, threadPriority, threadStackSize, threadId);
1218    return result;
1219}
1220
1221/*
1222 * Create a thread that is visible from the VM.
1223 *
1224 * This is called from elsewhere in the library.
1225 */
1226/*static*/ android_thread_id_t AndroidRuntime::createJavaThread(const char* name,
1227    void (*start)(void *), void* arg)
1228{
1229    android_thread_id_t threadId = 0;
1230    javaCreateThreadEtc((android_thread_func_t) start, arg, name,
1231        ANDROID_PRIORITY_DEFAULT, 0, &threadId);
1232    return threadId;
1233}
1234
1235#if 0
1236static void quickTest(void* arg)
1237{
1238    const char* str = (const char*) arg;
1239
1240    printf("In quickTest: %s\n", str);
1241}
1242#endif
1243
1244#ifdef NDEBUG
1245    #define REG_JNI(name)      { name }
1246    struct RegJNIRec {
1247        int (*mProc)(JNIEnv*);
1248    };
1249#else
1250    #define REG_JNI(name)      { name, #name }
1251    struct RegJNIRec {
1252        int (*mProc)(JNIEnv*);
1253        const char* mName;
1254    };
1255#endif
1256
1257typedef void (*RegJAMProc)();
1258
1259static int register_jni_procs(const RegJNIRec array[], size_t count, JNIEnv* env)
1260{
1261    for (size_t i = 0; i < count; i++) {
1262        if (array[i].mProc(env) < 0) {
1263#ifndef NDEBUG
1264            ALOGD("----------!!! %s failed to load\n", array[i].mName);
1265#endif
1266            return -1;
1267        }
1268    }
1269    return 0;
1270}
1271
1272static const RegJNIRec gRegJNI[] = {
1273    REG_JNI(register_com_android_internal_os_RuntimeInit),
1274    REG_JNI(register_android_os_SystemClock),
1275    REG_JNI(register_android_util_EventLog),
1276    REG_JNI(register_android_util_Log),
1277    REG_JNI(register_android_util_MemoryIntArray),
1278    REG_JNI(register_android_util_PathParser),
1279    REG_JNI(register_android_app_admin_SecurityLog),
1280    REG_JNI(register_android_content_AssetManager),
1281    REG_JNI(register_android_content_StringBlock),
1282    REG_JNI(register_android_content_XmlBlock),
1283    REG_JNI(register_android_text_AndroidCharacter),
1284    REG_JNI(register_android_text_StaticLayout),
1285    REG_JNI(register_android_text_AndroidBidi),
1286    REG_JNI(register_android_view_InputDevice),
1287    REG_JNI(register_android_view_KeyCharacterMap),
1288    REG_JNI(register_android_os_Process),
1289    REG_JNI(register_android_os_SystemProperties),
1290    REG_JNI(register_android_os_Binder),
1291    REG_JNI(register_android_os_Parcel),
1292    REG_JNI(register_android_os_HwBinder),
1293    REG_JNI(register_android_os_HwParcel),
1294    REG_JNI(register_android_os_HwRemoteBinder),
1295    REG_JNI(register_android_nio_utils),
1296    REG_JNI(register_android_graphics_Canvas),
1297    REG_JNI(register_android_graphics_Graphics),
1298    REG_JNI(register_android_view_DisplayEventReceiver),
1299    REG_JNI(register_android_view_RenderNode),
1300    REG_JNI(register_android_view_RenderNodeAnimator),
1301    REG_JNI(register_android_view_GraphicBuffer),
1302    REG_JNI(register_android_view_DisplayListCanvas),
1303    REG_JNI(register_android_view_HardwareLayer),
1304    REG_JNI(register_android_view_ThreadedRenderer),
1305    REG_JNI(register_android_view_Surface),
1306    REG_JNI(register_android_view_SurfaceControl),
1307    REG_JNI(register_android_view_SurfaceSession),
1308    REG_JNI(register_android_view_TextureView),
1309    REG_JNI(register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper),
1310    REG_JNI(register_com_google_android_gles_jni_EGLImpl),
1311    REG_JNI(register_com_google_android_gles_jni_GLImpl),
1312    REG_JNI(register_android_opengl_jni_EGL14),
1313    REG_JNI(register_android_opengl_jni_EGLExt),
1314    REG_JNI(register_android_opengl_jni_GLES10),
1315    REG_JNI(register_android_opengl_jni_GLES10Ext),
1316    REG_JNI(register_android_opengl_jni_GLES11),
1317    REG_JNI(register_android_opengl_jni_GLES11Ext),
1318    REG_JNI(register_android_opengl_jni_GLES20),
1319    REG_JNI(register_android_opengl_jni_GLES30),
1320    REG_JNI(register_android_opengl_jni_GLES31),
1321    REG_JNI(register_android_opengl_jni_GLES31Ext),
1322    REG_JNI(register_android_opengl_jni_GLES32),
1323
1324    REG_JNI(register_android_graphics_Bitmap),
1325    REG_JNI(register_android_graphics_BitmapFactory),
1326    REG_JNI(register_android_graphics_BitmapRegionDecoder),
1327    REG_JNI(register_android_graphics_Camera),
1328    REG_JNI(register_android_graphics_CreateJavaOutputStreamAdaptor),
1329    REG_JNI(register_android_graphics_CanvasProperty),
1330    REG_JNI(register_android_graphics_ColorFilter),
1331    REG_JNI(register_android_graphics_DrawFilter),
1332    REG_JNI(register_android_graphics_FontFamily),
1333    REG_JNI(register_android_graphics_Interpolator),
1334    REG_JNI(register_android_graphics_LayerRasterizer),
1335    REG_JNI(register_android_graphics_MaskFilter),
1336    REG_JNI(register_android_graphics_Matrix),
1337    REG_JNI(register_android_graphics_Movie),
1338    REG_JNI(register_android_graphics_NinePatch),
1339    REG_JNI(register_android_graphics_Paint),
1340    REG_JNI(register_android_graphics_Path),
1341    REG_JNI(register_android_graphics_PathMeasure),
1342    REG_JNI(register_android_graphics_PathEffect),
1343    REG_JNI(register_android_graphics_Picture),
1344    REG_JNI(register_android_graphics_PorterDuff),
1345    REG_JNI(register_android_graphics_Rasterizer),
1346    REG_JNI(register_android_graphics_Region),
1347    REG_JNI(register_android_graphics_Shader),
1348    REG_JNI(register_android_graphics_SurfaceTexture),
1349    REG_JNI(register_android_graphics_Typeface),
1350    REG_JNI(register_android_graphics_Xfermode),
1351    REG_JNI(register_android_graphics_YuvImage),
1352    REG_JNI(register_android_graphics_drawable_AnimatedVectorDrawable),
1353    REG_JNI(register_android_graphics_drawable_VectorDrawable),
1354    REG_JNI(register_android_graphics_pdf_PdfDocument),
1355    REG_JNI(register_android_graphics_pdf_PdfEditor),
1356    REG_JNI(register_android_graphics_pdf_PdfRenderer),
1357
1358    REG_JNI(register_android_database_CursorWindow),
1359    REG_JNI(register_android_database_SQLiteConnection),
1360    REG_JNI(register_android_database_SQLiteGlobal),
1361    REG_JNI(register_android_database_SQLiteDebug),
1362    REG_JNI(register_android_os_Debug),
1363    REG_JNI(register_android_os_FileObserver),
1364    REG_JNI(register_android_os_MessageQueue),
1365    REG_JNI(register_android_os_SELinux),
1366    REG_JNI(register_android_os_Trace),
1367    REG_JNI(register_android_os_UEventObserver),
1368    REG_JNI(register_android_net_LocalSocketImpl),
1369    REG_JNI(register_android_net_NetworkUtils),
1370    REG_JNI(register_android_net_TrafficStats),
1371    REG_JNI(register_android_os_MemoryFile),
1372    REG_JNI(register_com_android_internal_os_PathClassLoaderFactory),
1373    REG_JNI(register_com_android_internal_os_Zygote),
1374    REG_JNI(register_com_android_internal_util_VirtualRefBasePtr),
1375    REG_JNI(register_android_hardware_Camera),
1376    REG_JNI(register_android_hardware_camera2_CameraMetadata),
1377    REG_JNI(register_android_hardware_camera2_legacy_LegacyCameraDevice),
1378    REG_JNI(register_android_hardware_camera2_legacy_PerfMeasurement),
1379    REG_JNI(register_android_hardware_camera2_DngCreator),
1380    REG_JNI(register_android_hardware_Radio),
1381    REG_JNI(register_android_hardware_SensorManager),
1382    REG_JNI(register_android_hardware_SerialPort),
1383    REG_JNI(register_android_hardware_SoundTrigger),
1384    REG_JNI(register_android_hardware_UsbDevice),
1385    REG_JNI(register_android_hardware_UsbDeviceConnection),
1386    REG_JNI(register_android_hardware_UsbRequest),
1387    REG_JNI(register_android_hardware_location_ActivityRecognitionHardware),
1388    REG_JNI(register_android_hardware_location_ContextHubService),
1389    REG_JNI(register_android_media_AudioRecord),
1390    REG_JNI(register_android_media_AudioSystem),
1391    REG_JNI(register_android_media_AudioTrack),
1392    REG_JNI(register_android_media_JetPlayer),
1393    REG_JNI(register_android_media_RemoteDisplay),
1394    REG_JNI(register_android_media_ToneGenerator),
1395
1396    REG_JNI(register_android_opengl_classes),
1397    REG_JNI(register_android_server_NetworkManagementSocketTagger),
1398    REG_JNI(register_android_ddm_DdmHandleNativeHeap),
1399    REG_JNI(register_android_backup_BackupDataInput),
1400    REG_JNI(register_android_backup_BackupDataOutput),
1401    REG_JNI(register_android_backup_FileBackupHelperBase),
1402    REG_JNI(register_android_backup_BackupHelperDispatcher),
1403    REG_JNI(register_android_app_backup_FullBackup),
1404    REG_JNI(register_android_app_Activity),
1405    REG_JNI(register_android_app_ActivityThread),
1406    REG_JNI(register_android_app_ApplicationLoaders),
1407    REG_JNI(register_android_app_NativeActivity),
1408    REG_JNI(register_android_util_jar_StrictJarFile),
1409    REG_JNI(register_android_view_InputChannel),
1410    REG_JNI(register_android_view_InputEventReceiver),
1411    REG_JNI(register_android_view_InputEventSender),
1412    REG_JNI(register_android_view_InputQueue),
1413    REG_JNI(register_android_view_KeyEvent),
1414    REG_JNI(register_android_view_MotionEvent),
1415    REG_JNI(register_android_view_PointerIcon),
1416    REG_JNI(register_android_view_VelocityTracker),
1417
1418    REG_JNI(register_android_content_res_ObbScanner),
1419    REG_JNI(register_android_content_res_Configuration),
1420
1421    REG_JNI(register_android_animation_PropertyValuesHolder),
1422    REG_JNI(register_com_android_internal_content_NativeLibraryHelper),
1423    REG_JNI(register_com_android_internal_net_NetworkStatsFactory),
1424
1425};
1426
1427/*
1428 * Register android native functions with the VM.
1429 */
1430/*static*/ int AndroidRuntime::startReg(JNIEnv* env)
1431{
1432    ATRACE_NAME("RegisterAndroidNatives");
1433    /*
1434     * This hook causes all future threads created in this process to be
1435     * attached to the JavaVM.  (This needs to go away in favor of JNI
1436     * Attach calls.)
1437     */
1438    androidSetCreateThreadFunc((android_create_thread_fn) javaCreateThreadEtc);
1439
1440    ALOGV("--- registering native functions ---\n");
1441
1442    /*
1443     * Every "register" function calls one or more things that return
1444     * a local reference (e.g. FindClass).  Because we haven't really
1445     * started the VM yet, they're all getting stored in the base frame
1446     * and never released.  Use Push/Pop to manage the storage.
1447     */
1448    env->PushLocalFrame(200);
1449
1450    if (register_jni_procs(gRegJNI, NELEM(gRegJNI), env) < 0) {
1451        env->PopLocalFrame(NULL);
1452        return -1;
1453    }
1454    env->PopLocalFrame(NULL);
1455
1456    //createJavaThread("fubar", quickTest, (void*) "hello");
1457
1458    return 0;
1459}
1460
1461AndroidRuntime* AndroidRuntime::getRuntime()
1462{
1463    return gCurRuntime;
1464}
1465
1466/**
1467 * Used by surface flinger's DdmConnection to register native methods from
1468 * the framework.
1469 */
1470extern "C" jint registerFrameworkNatives(JNIEnv* env) {
1471    return register_jni_procs(gRegJNI, NELEM(gRegJNI), env);
1472}
1473}   // namespace android
1474