AndroidRuntime.cpp revision dc26321e0b8293a29b4b1c5700938a5445b230ba 
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_HwBlob(JNIEnv *env);
160extern int register_android_os_HwParcel(JNIEnv *env);
161extern int register_android_os_HwRemoteBinder(JNIEnv *env);
162extern int register_android_os_MessageQueue(JNIEnv* env);
163extern int register_android_os_Parcel(JNIEnv* env);
164extern int register_android_os_SELinux(JNIEnv* env);
165extern int register_android_os_SystemProperties(JNIEnv *env);
166extern int register_android_os_SystemClock(JNIEnv* env);
167extern int register_android_os_Trace(JNIEnv* env);
168extern int register_android_os_FileObserver(JNIEnv *env);
169extern int register_android_os_UEventObserver(JNIEnv* env);
170extern int register_android_os_MemoryFile(JNIEnv* env);
171extern int register_android_net_LocalSocketImpl(JNIEnv* env);
172extern int register_android_net_NetworkUtils(JNIEnv* env);
173extern int register_android_net_TrafficStats(JNIEnv* env);
174extern int register_android_text_AndroidCharacter(JNIEnv *env);
175extern int register_android_text_StaticLayout(JNIEnv *env);
176extern int register_android_text_AndroidBidi(JNIEnv *env);
177extern int register_android_opengl_classes(JNIEnv *env);
178extern int register_android_ddm_DdmHandleNativeHeap(JNIEnv *env);
179extern int register_android_server_NetworkManagementSocketTagger(JNIEnv* env);
180extern int register_android_backup_BackupDataInput(JNIEnv *env);
181extern int register_android_backup_BackupDataOutput(JNIEnv *env);
182extern int register_android_backup_FileBackupHelperBase(JNIEnv *env);
183extern int register_android_backup_BackupHelperDispatcher(JNIEnv *env);
184extern int register_android_app_backup_FullBackup(JNIEnv *env);
185extern int register_android_app_Activity(JNIEnv *env);
186extern int register_android_app_ActivityThread(JNIEnv *env);
187extern int register_android_app_ApplicationLoaders(JNIEnv *env);
188extern int register_android_app_NativeActivity(JNIEnv *env);
189extern int register_android_media_RemoteDisplay(JNIEnv *env);
190extern int register_android_util_jar_StrictJarFile(JNIEnv* env);
191extern int register_android_view_InputChannel(JNIEnv* env);
192extern int register_android_view_InputDevice(JNIEnv* env);
193extern int register_android_view_InputEventReceiver(JNIEnv* env);
194extern int register_android_view_InputEventSender(JNIEnv* env);
195extern int register_android_view_InputQueue(JNIEnv* env);
196extern int register_android_view_KeyCharacterMap(JNIEnv *env);
197extern int register_android_view_KeyEvent(JNIEnv* env);
198extern int register_android_view_MotionEvent(JNIEnv* env);
199extern int register_android_view_PointerIcon(JNIEnv* env);
200extern int register_android_view_VelocityTracker(JNIEnv* env);
201extern int register_android_content_res_ObbScanner(JNIEnv* env);
202extern int register_android_content_res_Configuration(JNIEnv* env);
203extern int register_android_animation_PropertyValuesHolder(JNIEnv *env);
204extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env);
205extern int register_com_android_internal_net_NetworkStatsFactory(JNIEnv *env);
206extern int register_com_android_internal_os_PathClassLoaderFactory(JNIEnv* env);
207extern int register_com_android_internal_os_Zygote(JNIEnv *env);
208extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env);
209
210static AndroidRuntime* gCurRuntime = NULL;
211
212/*
213 * Code written in the Java Programming Language calls here from main().
214 */
215static void com_android_internal_os_RuntimeInit_nativeFinishInit(JNIEnv* env, jobject clazz)
216{
217    gCurRuntime->onStarted();
218}
219
220static void com_android_internal_os_RuntimeInit_nativeZygoteInit(JNIEnv* env, jobject clazz)
221{
222    gCurRuntime->onZygoteInit();
223}
224
225static void com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup(JNIEnv* env,
226        jobject clazz, jboolean exitWithoutCleanup)
227{
228    gCurRuntime->setExitWithoutCleanup(exitWithoutCleanup);
229}
230
231/*
232 * JNI registration.
233 */
234static const JNINativeMethod gMethods[] = {
235    { "nativeFinishInit", "()V",
236        (void*) com_android_internal_os_RuntimeInit_nativeFinishInit },
237    { "nativeZygoteInit", "()V",
238        (void*) com_android_internal_os_RuntimeInit_nativeZygoteInit },
239    { "nativeSetExitWithoutCleanup", "(Z)V",
240        (void*) com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup },
241};
242
243int register_com_android_internal_os_RuntimeInit(JNIEnv* env)
244{
245    return jniRegisterNativeMethods(env, "com/android/internal/os/RuntimeInit",
246        gMethods, NELEM(gMethods));
247}
248
249// ----------------------------------------------------------------------
250
251/*static*/ JavaVM* AndroidRuntime::mJavaVM = NULL;
252
253AndroidRuntime::AndroidRuntime(char* argBlockStart, const size_t argBlockLength) :
254        mExitWithoutCleanup(false),
255        mArgBlockStart(argBlockStart),
256        mArgBlockLength(argBlockLength)
257{
258    SkGraphics::Init();
259    // There is also a global font cache, but its budget is specified by
260    // SK_DEFAULT_FONT_CACHE_COUNT_LIMIT and SK_DEFAULT_FONT_CACHE_LIMIT.
261
262    // Pre-allocate enough space to hold a fair number of options.
263    mOptions.setCapacity(20);
264
265    assert(gCurRuntime == NULL);        // one per process
266    gCurRuntime = this;
267}
268
269AndroidRuntime::~AndroidRuntime()
270{
271    SkGraphics::Term();
272}
273
274/*
275 * Register native methods using JNI.
276 */
277/*static*/ int AndroidRuntime::registerNativeMethods(JNIEnv* env,
278    const char* className, const JNINativeMethod* gMethods, int numMethods)
279{
280    return jniRegisterNativeMethods(env, className, gMethods, numMethods);
281}
282
283void AndroidRuntime::setArgv0(const char* argv0, bool setProcName) {
284    if (setProcName) {
285        int len = strlen(argv0);
286        if (len < 15) {
287            pthread_setname_np(pthread_self(), argv0);
288        } else {
289            pthread_setname_np(pthread_self(), argv0 + len - 15);
290        }
291    }
292    memset(mArgBlockStart, 0, mArgBlockLength);
293    strlcpy(mArgBlockStart, argv0, mArgBlockLength);
294}
295
296status_t AndroidRuntime::callMain(const String8& className, jclass clazz,
297    const Vector<String8>& args)
298{
299    JNIEnv* env;
300    jmethodID methodId;
301
302    ALOGD("Calling main entry %s", className.string());
303
304    env = getJNIEnv();
305    if (clazz == NULL || env == NULL) {
306        return UNKNOWN_ERROR;
307    }
308
309    methodId = env->GetStaticMethodID(clazz, "main", "([Ljava/lang/String;)V");
310    if (methodId == NULL) {
311        ALOGE("ERROR: could not find method %s.main(String[])\n", className.string());
312        return UNKNOWN_ERROR;
313    }
314
315    /*
316     * We want to call main() with a String array with our arguments in it.
317     * Create an array and populate it.
318     */
319    jclass stringClass;
320    jobjectArray strArray;
321
322    const size_t numArgs = args.size();
323    stringClass = env->FindClass("java/lang/String");
324    strArray = env->NewObjectArray(numArgs, stringClass, NULL);
325
326    for (size_t i = 0; i < numArgs; i++) {
327        jstring argStr = env->NewStringUTF(args[i].string());
328        env->SetObjectArrayElement(strArray, i, argStr);
329    }
330
331    env->CallStaticVoidMethod(clazz, methodId, strArray);
332    return NO_ERROR;
333}
334
335/*
336 * The VM calls this through the "exit" hook.
337 */
338static void runtime_exit(int code)
339{
340    gCurRuntime->exit(code);
341}
342
343/*
344 * The VM calls this through the "vfprintf" hook.
345 *
346 * We ignore "fp" and just write the results to the log file.
347 */
348static void runtime_vfprintf(FILE* fp, const char* format, va_list ap)
349{
350    LOG_PRI_VA(ANDROID_LOG_INFO, "vm-printf", format, ap);
351}
352
353/**
354 * The VM calls this when mutex contention debugging is enabled to
355 * determine whether or not the blocked thread was a "sensitive thread"
356 * for user responsiveness/smoothess.
357 *
358 * Our policy for this is whether or not we're tracing any StrictMode
359 * events on this thread (which we might've inherited via Binder calls
360 * into us)
361 */
362static bool runtime_isSensitiveThread() {
363    IPCThreadState* state = IPCThreadState::selfOrNull();
364    return state && state->getStrictModePolicy() != 0;
365}
366
367static int hasDir(const char* dir)
368{
369    struct stat s;
370    int res = stat(dir, &s);
371    if (res == 0) {
372        return S_ISDIR(s.st_mode);
373    }
374    return 0;
375}
376
377static bool hasFile(const char* file) {
378    struct stat s;
379    int res = stat(file, &s);
380    if (res == 0) {
381        return S_ISREG(s.st_mode);
382    }
383    return false;
384}
385
386// Convenience wrapper over the property API that returns an
387// std::string.
388std::string getProperty(const char* key, const char* defaultValue) {
389    std::vector<char> temp(PROPERTY_VALUE_MAX);
390    const int len = property_get(key, &temp[0], defaultValue);
391    if (len < 0) {
392        return "";
393    }
394    return std::string(&temp[0], len);
395}
396
397/*
398 * Read the persistent locale. Inspects the following system properties
399 * (in order) and returns the first non-empty property in the list :
400 *
401 * (1) persist.sys.locale
402 * (2) persist.sys.language/country/localevar (country and localevar are
403 * inspected iff. language is non-empty.
404 * (3) ro.product.locale
405 * (4) ro.product.locale.language/region
406 *
407 * Note that we need to inspect persist.sys.language/country/localevar to
408 * preserve language settings for devices that are upgrading from Lollipop
409 * to M. The same goes for ro.product.locale.language/region as well.
410 */
411const std::string readLocale()
412{
413    const std::string locale = getProperty("persist.sys.locale", "");
414    if (!locale.empty()) {
415        return locale;
416    }
417
418    const std::string language = getProperty("persist.sys.language", "");
419    if (!language.empty()) {
420        const std::string country = getProperty("persist.sys.country", "");
421        const std::string variant = getProperty("persist.sys.localevar", "");
422
423        std::string out = language;
424        if (!country.empty()) {
425            out = out + "-" + country;
426        }
427
428        if (!variant.empty()) {
429            out = out + "-" + variant;
430        }
431
432        return out;
433    }
434
435    const std::string productLocale = getProperty("ro.product.locale", "");
436    if (!productLocale.empty()) {
437        return productLocale;
438    }
439
440    // If persist.sys.locale and ro.product.locale are missing,
441    // construct a locale value from the individual locale components.
442    const std::string productLanguage = getProperty("ro.product.locale.language", "en");
443    const std::string productRegion = getProperty("ro.product.locale.region", "US");
444
445    return productLanguage + "-" + productRegion;
446}
447
448void AndroidRuntime::addOption(const char* optionString, void* extraInfo)
449{
450    JavaVMOption opt;
451    opt.optionString = optionString;
452    opt.extraInfo = extraInfo;
453    mOptions.add(opt);
454}
455
456/*
457 * Parse a property containing space-separated options that should be
458 * passed directly to the VM, e.g. "-Xmx32m -verbose:gc -Xregenmap".
459 *
460 * This will cut up "extraOptsBuf" as we chop it into individual options.
461 *
462 * If "quotingArg" is non-null, it is passed before each extra option in mOptions.
463 *
464 * Adds the strings, if any, to mOptions.
465 */
466void AndroidRuntime::parseExtraOpts(char* extraOptsBuf, const char* quotingArg)
467{
468    char* start = extraOptsBuf;
469    char* end = NULL;
470    while (*start != '\0') {
471        while (*start == ' ')                   /* skip leading whitespace */
472            start++;
473        if (*start == '\0')                     /* was trailing ws, bail */
474            break;
475
476        end = start+1;
477        while (*end != ' ' && *end != '\0')     /* find end of token */
478            end++;
479        if (*end == ' ')
480            *end++ = '\0';          /* mark end, advance to indicate more */
481
482        if (quotingArg != NULL) {
483            addOption(quotingArg);
484        }
485        addOption(start);
486        start = end;
487    }
488}
489
490/*
491 * Reads a "property" into "buffer" with a default of "defaultArg". If
492 * the property is non-empty, it is treated as a runtime option such
493 * as "-Xmx32m".
494 *
495 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
496 *
497 * If an argument is found, it is added to mOptions.
498 *
499 * If an option is found, it is added to mOptions and true is
500 * returned. Otherwise false is returned.
501 */
502bool AndroidRuntime::parseRuntimeOption(const char* property,
503                                        char* buffer,
504                                        const char* runtimeArg,
505                                        const char* defaultArg)
506{
507    strcpy(buffer, runtimeArg);
508    size_t runtimeArgLen = strlen(runtimeArg);
509    property_get(property, buffer+runtimeArgLen, defaultArg);
510    if (buffer[runtimeArgLen] == '\0') {
511        return false;
512    }
513    addOption(buffer);
514    return true;
515}
516
517/*
518 * Reads a "property" into "buffer". If the property is non-empty, it
519 * is treated as a dex2oat compiler option that should be
520 * passed as a quoted option, e.g. "-Ximage-compiler-option --compiler-filter=verify-none".
521 *
522 * The "compilerArg" is a prefix for the option such as "--compiler-filter=".
523 *
524 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
525 *
526 * If an option is found, it is added to mOptions and true is
527 * returned. Otherwise false is returned.
528 */
529bool AndroidRuntime::parseCompilerOption(const char* property,
530                                         char* buffer,
531                                         const char* compilerArg,
532                                         const char* quotingArg)
533{
534    strcpy(buffer, compilerArg);
535    size_t compilerArgLen = strlen(compilerArg);
536    property_get(property, buffer+compilerArgLen, "");
537    if (buffer[compilerArgLen] == '\0') {
538        return false;
539    }
540    addOption(quotingArg);
541    addOption(buffer);
542    return true;
543}
544
545/*
546 * Reads a "property" into "buffer". If the property is non-empty, it
547 * is treated as a dex2oat compiler runtime option that should be
548 * passed as a quoted option, e.g. "-Ximage-compiler-option
549 * --runtime-arg -Ximage-compiler-option -Xmx32m".
550 *
551 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
552 *
553 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
554 *
555 * If an option is found, it is added to mOptions and true is
556 * returned. Otherwise false is returned.
557 */
558bool AndroidRuntime::parseCompilerRuntimeOption(const char* property,
559                                                char* buffer,
560                                                const char* runtimeArg,
561                                                const char* quotingArg)
562{
563    strcpy(buffer, runtimeArg);
564    size_t runtimeArgLen = strlen(runtimeArg);
565    property_get(property, buffer+runtimeArgLen, "");
566    if (buffer[runtimeArgLen] == '\0') {
567        return false;
568    }
569    addOption(quotingArg);
570    addOption("--runtime-arg");
571    addOption(quotingArg);
572    addOption(buffer);
573    return true;
574}
575
576/*
577 * Start the Dalvik Virtual Machine.
578 *
579 * Various arguments, most determined by system properties, are passed in.
580 * The "mOptions" vector is updated.
581 *
582 * CAUTION: when adding options in here, be careful not to put the
583 * char buffer inside a nested scope.  Adding the buffer to the
584 * options using mOptions.add() does not copy the buffer, so if the
585 * buffer goes out of scope the option may be overwritten.  It's best
586 * to put the buffer at the top of the function so that it is more
587 * unlikely that someone will surround it in a scope at a later time
588 * and thus introduce a bug.
589 *
590 * Returns 0 on success.
591 */
592int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv, bool zygote)
593{
594    JavaVMInitArgs initArgs;
595    char propBuf[PROPERTY_VALUE_MAX];
596    char stackTraceFileBuf[sizeof("-Xstacktracefile:")-1 + PROPERTY_VALUE_MAX];
597    char jniOptsBuf[sizeof("-Xjniopts:")-1 + PROPERTY_VALUE_MAX];
598    char heapstartsizeOptsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
599    char heapsizeOptsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
600    char heapgrowthlimitOptsBuf[sizeof("-XX:HeapGrowthLimit=")-1 + PROPERTY_VALUE_MAX];
601    char heapminfreeOptsBuf[sizeof("-XX:HeapMinFree=")-1 + PROPERTY_VALUE_MAX];
602    char heapmaxfreeOptsBuf[sizeof("-XX:HeapMaxFree=")-1 + PROPERTY_VALUE_MAX];
603    char usejitOptsBuf[sizeof("-Xusejit:")-1 + PROPERTY_VALUE_MAX];
604    char jitmaxsizeOptsBuf[sizeof("-Xjitmaxsize:")-1 + PROPERTY_VALUE_MAX];
605    char jitinitialsizeOptsBuf[sizeof("-Xjitinitialsize:")-1 + PROPERTY_VALUE_MAX];
606    char jitthresholdOptsBuf[sizeof("-Xjitthreshold:")-1 + PROPERTY_VALUE_MAX];
607    char useJitProfilesOptsBuf[sizeof("-Xjitsaveprofilinginfo:")-1 + PROPERTY_VALUE_MAX];
608    char jitprithreadweightOptBuf[sizeof("-Xjitprithreadweight:")-1 + PROPERTY_VALUE_MAX];
609    char jittransitionweightOptBuf[sizeof("-Xjittransitionweight:")-1 + PROPERTY_VALUE_MAX];
610    char gctypeOptsBuf[sizeof("-Xgc:")-1 + PROPERTY_VALUE_MAX];
611    char backgroundgcOptsBuf[sizeof("-XX:BackgroundGC=")-1 + PROPERTY_VALUE_MAX];
612    char heaptargetutilizationOptsBuf[sizeof("-XX:HeapTargetUtilization=")-1 + PROPERTY_VALUE_MAX];
613    char cachePruneBuf[sizeof("-Xzygote-max-boot-retry=")-1 + PROPERTY_VALUE_MAX];
614    char dex2oatXmsImageFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
615    char dex2oatXmxImageFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
616    char dex2oatXmsFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
617    char dex2oatXmxFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
618    char dex2oatCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
619    char dex2oatImageCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
620    char dex2oatThreadsBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
621    char dex2oatThreadsImageBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
622    char dex2oat_isa_variant_key[PROPERTY_KEY_MAX];
623    char dex2oat_isa_variant[sizeof("--instruction-set-variant=") -1 + PROPERTY_VALUE_MAX];
624    char dex2oat_isa_features_key[PROPERTY_KEY_MAX];
625    char dex2oat_isa_features[sizeof("--instruction-set-features=") -1 + PROPERTY_VALUE_MAX];
626    char dex2oatFlagsBuf[PROPERTY_VALUE_MAX];
627    char dex2oatImageFlagsBuf[PROPERTY_VALUE_MAX];
628    char extraOptsBuf[PROPERTY_VALUE_MAX];
629    char voldDecryptBuf[PROPERTY_VALUE_MAX];
630    enum {
631      kEMDefault,
632      kEMIntPortable,
633      kEMIntFast,
634      kEMJitCompiler,
635    } executionMode = kEMDefault;
636    char localeOption[sizeof("-Duser.locale=") + PROPERTY_VALUE_MAX];
637    char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:")-1 + PROPERTY_VALUE_MAX];
638    char nativeBridgeLibrary[sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX];
639    char cpuAbiListBuf[sizeof("--cpu-abilist=") + PROPERTY_VALUE_MAX];
640    char methodTraceFileBuf[sizeof("-Xmethod-trace-file:") + PROPERTY_VALUE_MAX];
641    char methodTraceFileSizeBuf[sizeof("-Xmethod-trace-file-size:") + PROPERTY_VALUE_MAX];
642    char fingerprintBuf[sizeof("-Xfingerprint:") + PROPERTY_VALUE_MAX];
643
644    bool checkJni = false;
645    property_get("dalvik.vm.checkjni", propBuf, "");
646    if (strcmp(propBuf, "true") == 0) {
647        checkJni = true;
648    } else if (strcmp(propBuf, "false") != 0) {
649        /* property is neither true nor false; fall back on kernel parameter */
650        property_get("ro.kernel.android.checkjni", propBuf, "");
651        if (propBuf[0] == '1') {
652            checkJni = true;
653        }
654    }
655    ALOGD("CheckJNI is %s\n", checkJni ? "ON" : "OFF");
656    if (checkJni) {
657        /* extended JNI checking */
658        addOption("-Xcheck:jni");
659
660        /* with -Xcheck:jni, this provides a JNI function call trace */
661        //addOption("-verbose:jni");
662    }
663
664    property_get("dalvik.vm.execution-mode", propBuf, "");
665    if (strcmp(propBuf, "int:portable") == 0) {
666        executionMode = kEMIntPortable;
667    } else if (strcmp(propBuf, "int:fast") == 0) {
668        executionMode = kEMIntFast;
669    } else if (strcmp(propBuf, "int:jit") == 0) {
670        executionMode = kEMJitCompiler;
671    }
672
673    parseRuntimeOption("dalvik.vm.stack-trace-file", stackTraceFileBuf, "-Xstacktracefile:");
674
675    strcpy(jniOptsBuf, "-Xjniopts:");
676    if (parseRuntimeOption("dalvik.vm.jniopts", jniOptsBuf, "-Xjniopts:")) {
677        ALOGI("JNI options: '%s'\n", jniOptsBuf);
678    }
679
680    /* route exit() to our handler */
681    addOption("exit", (void*) runtime_exit);
682
683    /* route fprintf() to our handler */
684    addOption("vfprintf", (void*) runtime_vfprintf);
685
686    /* register the framework-specific "is sensitive thread" hook */
687    addOption("sensitiveThread", (void*) runtime_isSensitiveThread);
688
689    /* enable verbose; standard options are { jni, gc, class } */
690    //addOption("-verbose:jni");
691    addOption("-verbose:gc");
692    //addOption("-verbose:class");
693
694    /*
695     * The default starting and maximum size of the heap.  Larger
696     * values should be specified in a product property override.
697     */
698    parseRuntimeOption("dalvik.vm.heapstartsize", heapstartsizeOptsBuf, "-Xms", "4m");
699    parseRuntimeOption("dalvik.vm.heapsize", heapsizeOptsBuf, "-Xmx", "16m");
700
701    parseRuntimeOption("dalvik.vm.heapgrowthlimit", heapgrowthlimitOptsBuf, "-XX:HeapGrowthLimit=");
702    parseRuntimeOption("dalvik.vm.heapminfree", heapminfreeOptsBuf, "-XX:HeapMinFree=");
703    parseRuntimeOption("dalvik.vm.heapmaxfree", heapmaxfreeOptsBuf, "-XX:HeapMaxFree=");
704    parseRuntimeOption("dalvik.vm.heaptargetutilization",
705                       heaptargetutilizationOptsBuf,
706                       "-XX:HeapTargetUtilization=");
707
708    /*
709     * JIT related options.
710     */
711    parseRuntimeOption("dalvik.vm.usejit", usejitOptsBuf, "-Xusejit:");
712    parseRuntimeOption("dalvik.vm.jitmaxsize", jitmaxsizeOptsBuf, "-Xjitmaxsize:");
713    parseRuntimeOption("dalvik.vm.jitinitialsize", jitinitialsizeOptsBuf, "-Xjitinitialsize:");
714    parseRuntimeOption("dalvik.vm.jitthreshold", jitthresholdOptsBuf, "-Xjitthreshold:");
715    property_get("dalvik.vm.usejitprofiles", useJitProfilesOptsBuf, "");
716    if (strcmp(useJitProfilesOptsBuf, "true") == 0) {
717        addOption("-Xjitsaveprofilinginfo");
718    }
719
720    parseRuntimeOption("dalvik.vm.jitprithreadweight",
721                       jitprithreadweightOptBuf,
722                       "-Xjitprithreadweight:");
723
724    parseRuntimeOption("dalvik.vm.jittransitionweight",
725                       jittransitionweightOptBuf,
726                       "-Xjittransitionweight:");
727
728    property_get("ro.config.low_ram", propBuf, "");
729    if (strcmp(propBuf, "true") == 0) {
730      addOption("-XX:LowMemoryMode");
731    }
732
733    parseRuntimeOption("dalvik.vm.gctype", gctypeOptsBuf, "-Xgc:");
734    parseRuntimeOption("dalvik.vm.backgroundgctype", backgroundgcOptsBuf, "-XX:BackgroundGC=");
735
736    /*
737     * Enable debugging only for apps forked from zygote.
738     * Set suspend=y to pause during VM init and use android ADB transport.
739     */
740    if (zygote) {
741      addOption("-agentlib:jdwp=transport=dt_android_adb,suspend=n,server=y");
742    }
743
744    parseRuntimeOption("dalvik.vm.lockprof.threshold",
745                       lockProfThresholdBuf,
746                       "-Xlockprofthreshold:");
747
748    if (executionMode == kEMIntPortable) {
749        addOption("-Xint:portable");
750    } else if (executionMode == kEMIntFast) {
751        addOption("-Xint:fast");
752    } else if (executionMode == kEMJitCompiler) {
753        addOption("-Xint:jit");
754    }
755
756    // If we are booting without the real /data, don't spend time compiling.
757    property_get("vold.decrypt", voldDecryptBuf, "");
758    bool skip_compilation = ((strcmp(voldDecryptBuf, "trigger_restart_min_framework") == 0) ||
759                             (strcmp(voldDecryptBuf, "1") == 0));
760
761    // Extra options for boot.art/boot.oat image generation.
762    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xms", dex2oatXmsImageFlagsBuf,
763                               "-Xms", "-Ximage-compiler-option");
764    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xmx", dex2oatXmxImageFlagsBuf,
765                               "-Xmx", "-Ximage-compiler-option");
766    if (skip_compilation) {
767        addOption("-Ximage-compiler-option");
768        addOption("--compiler-filter=verify-none");
769    } else {
770        parseCompilerOption("dalvik.vm.image-dex2oat-filter", dex2oatImageCompilerFilterBuf,
771                            "--compiler-filter=", "-Ximage-compiler-option");
772    }
773
774    // Make sure there is a preloaded-classes file.
775    if (!hasFile("/system/etc/preloaded-classes")) {
776        ALOGE("Missing preloaded-classes file, /system/etc/preloaded-classes not found: %s\n",
777              strerror(errno));
778        return -1;
779    }
780    addOption("-Ximage-compiler-option");
781    addOption("--image-classes=/system/etc/preloaded-classes");
782
783    // If there is a compiled-classes file, push it.
784    if (hasFile("/system/etc/compiled-classes")) {
785        addOption("-Ximage-compiler-option");
786        addOption("--compiled-classes=/system/etc/compiled-classes");
787    }
788
789    property_get("dalvik.vm.image-dex2oat-flags", dex2oatImageFlagsBuf, "");
790    parseExtraOpts(dex2oatImageFlagsBuf, "-Ximage-compiler-option");
791
792    // Extra options for DexClassLoader.
793    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xms", dex2oatXmsFlagsBuf,
794                               "-Xms", "-Xcompiler-option");
795    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xmx", dex2oatXmxFlagsBuf,
796                               "-Xmx", "-Xcompiler-option");
797    if (skip_compilation) {
798        addOption("-Xcompiler-option");
799        addOption("--compiler-filter=verify-none");
800
801        // We skip compilation when a minimal runtime is brought up for decryption. In that case
802        // /data is temporarily backed by a tmpfs, which is usually small.
803        // If the system image contains prebuilts, they will be relocated into the tmpfs. In this
804        // specific situation it is acceptable to *not* relocate and run out of the prebuilts
805        // directly instead.
806        addOption("--runtime-arg");
807        addOption("-Xnorelocate");
808    } else {
809        parseCompilerOption("dalvik.vm.dex2oat-filter", dex2oatCompilerFilterBuf,
810                            "--compiler-filter=", "-Xcompiler-option");
811    }
812    parseCompilerOption("dalvik.vm.dex2oat-threads", dex2oatThreadsBuf, "-j", "-Xcompiler-option");
813    parseCompilerOption("dalvik.vm.image-dex2oat-threads", dex2oatThreadsImageBuf, "-j",
814                        "-Ximage-compiler-option");
815
816    // The runtime will compile a boot image, when necessary, not using installd. Thus, we need to
817    // pass the instruction-set-features/variant as an image-compiler-option.
818    // TODO: Find a better way for the instruction-set.
819#if defined(__arm__)
820    constexpr const char* instruction_set = "arm";
821#elif defined(__aarch64__)
822    constexpr const char* instruction_set = "arm64";
823#elif defined(__mips__) && !defined(__LP64__)
824    constexpr const char* instruction_set = "mips";
825#elif defined(__mips__) && defined(__LP64__)
826    constexpr const char* instruction_set = "mips64";
827#elif defined(__i386__)
828    constexpr const char* instruction_set = "x86";
829#elif defined(__x86_64__)
830    constexpr const char* instruction_set = "x86_64";
831#else
832    constexpr const char* instruction_set = "unknown";
833#endif
834    // Note: it is OK to reuse the buffer, as the values are exactly the same between
835    //       * compiler-option, used for runtime compilation (DexClassLoader)
836    //       * image-compiler-option, used for boot-image compilation on device
837
838    // Copy the variant.
839    sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set);
840    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
841                        "--instruction-set-variant=", "-Ximage-compiler-option");
842    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
843                        "--instruction-set-variant=", "-Xcompiler-option");
844    // Copy the features.
845    sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set);
846    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
847                        "--instruction-set-features=", "-Ximage-compiler-option");
848    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
849                        "--instruction-set-features=", "-Xcompiler-option");
850
851
852    property_get("dalvik.vm.dex2oat-flags", dex2oatFlagsBuf, "");
853    parseExtraOpts(dex2oatFlagsBuf, "-Xcompiler-option");
854
855    /* extra options; parse this late so it overrides others */
856    property_get("dalvik.vm.extra-opts", extraOptsBuf, "");
857    parseExtraOpts(extraOptsBuf, NULL);
858
859    /* Set the properties for locale */
860    {
861        strcpy(localeOption, "-Duser.locale=");
862        const std::string locale = readLocale();
863        strncat(localeOption, locale.c_str(), PROPERTY_VALUE_MAX);
864        addOption(localeOption);
865    }
866
867    // Trace files are stored in /data/misc/trace which is writable only in debug mode.
868    property_get("ro.debuggable", propBuf, "0");
869    if (strcmp(propBuf, "1") == 0) {
870        property_get("dalvik.vm.method-trace", propBuf, "false");
871        if (strcmp(propBuf, "true") == 0) {
872            addOption("-Xmethod-trace");
873            parseRuntimeOption("dalvik.vm.method-trace-file",
874                               methodTraceFileBuf,
875                               "-Xmethod-trace-file:");
876            parseRuntimeOption("dalvik.vm.method-trace-file-siz",
877                               methodTraceFileSizeBuf,
878                               "-Xmethod-trace-file-size:");
879            property_get("dalvik.vm.method-trace-stream", propBuf, "false");
880            if (strcmp(propBuf, "true") == 0) {
881                addOption("-Xmethod-trace-stream");
882            }
883        }
884    }
885
886    // Native bridge library. "0" means that native bridge is disabled.
887    property_get("ro.dalvik.vm.native.bridge", propBuf, "");
888    if (propBuf[0] == '\0') {
889        ALOGW("ro.dalvik.vm.native.bridge is not expected to be empty");
890    } else if (strcmp(propBuf, "0") != 0) {
891        snprintf(nativeBridgeLibrary, sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX,
892                 "-XX:NativeBridge=%s", propBuf);
893        addOption(nativeBridgeLibrary);
894    }
895
896#if defined(__LP64__)
897    const char* cpu_abilist_property_name = "ro.product.cpu.abilist64";
898#else
899    const char* cpu_abilist_property_name = "ro.product.cpu.abilist32";
900#endif  // defined(__LP64__)
901    property_get(cpu_abilist_property_name, propBuf, "");
902    if (propBuf[0] == '\0') {
903        ALOGE("%s is not expected to be empty", cpu_abilist_property_name);
904        return -1;
905    }
906    snprintf(cpuAbiListBuf, sizeof(cpuAbiListBuf), "--cpu-abilist=%s", propBuf);
907    addOption(cpuAbiListBuf);
908
909    // Dalvik-cache pruning counter.
910    parseRuntimeOption("dalvik.vm.zygote.max-boot-retry", cachePruneBuf,
911                       "-Xzygote-max-boot-retry=");
912
913    /*
914     * When running with debug.generate-debug-info, add --generate-debug-info to
915     * the compiler options so that the boot image, if it is compiled on device,
916     * will include native debugging information.
917     */
918    property_get("debug.generate-debug-info", propBuf, "");
919    if (strcmp(propBuf, "true") == 0) {
920        addOption("-Xcompiler-option");
921        addOption("--generate-debug-info");
922        addOption("-Ximage-compiler-option");
923        addOption("--generate-debug-info");
924    }
925
926    /*
927     * Retrieve the build fingerprint and provide it to the runtime. That way, ANR dumps will
928     * contain the fingerprint and can be parsed.
929     */
930    parseRuntimeOption("ro.build.fingerprint", fingerprintBuf, "-Xfingerprint:");
931
932    initArgs.version = JNI_VERSION_1_4;
933    initArgs.options = mOptions.editArray();
934    initArgs.nOptions = mOptions.size();
935    initArgs.ignoreUnrecognized = JNI_FALSE;
936
937    /*
938     * Initialize the VM.
939     *
940     * The JavaVM* is essentially per-process, and the JNIEnv* is per-thread.
941     * If this call succeeds, the VM is ready, and we can start issuing
942     * JNI calls.
943     */
944    if (JNI_CreateJavaVM(pJavaVM, pEnv, &initArgs) < 0) {
945        ALOGE("JNI_CreateJavaVM failed\n");
946        return -1;
947    }
948
949    return 0;
950}
951
952char* AndroidRuntime::toSlashClassName(const char* className)
953{
954    char* result = strdup(className);
955    for (char* cp = result; *cp != '\0'; cp++) {
956        if (*cp == '.') {
957            *cp = '/';
958        }
959    }
960    return result;
961}
962
963/** Create a Java string from an ASCII or Latin-1 string */
964jstring AndroidRuntime::NewStringLatin1(JNIEnv* env, const char* bytes) {
965    if (!bytes) return NULL;
966    int length = strlen(bytes);
967    jchar* buffer = (jchar *)alloca(length * sizeof(jchar));
968    if (!buffer) return NULL;
969    jchar* chp = buffer;
970    for (int i = 0; i < length; i++) {
971        *chp++ = *bytes++;
972    }
973    return env->NewString(buffer, length);
974}
975
976
977/*
978 * Start the Android runtime.  This involves starting the virtual machine
979 * and calling the "static void main(String[] args)" method in the class
980 * named by "className".
981 *
982 * Passes the main function two arguments, the class name and the specified
983 * options string.
984 */
985void AndroidRuntime::start(const char* className, const Vector<String8>& options, bool zygote)
986{
987    ALOGD(">>>>>> START %s uid %d <<<<<<\n",
988            className != NULL ? className : "(unknown)", getuid());
989
990    static const String8 startSystemServer("start-system-server");
991
992    /*
993     * 'startSystemServer == true' means runtime is obsolete and not run from
994     * init.rc anymore, so we print out the boot start event here.
995     */
996    for (size_t i = 0; i < options.size(); ++i) {
997        if (options[i] == startSystemServer) {
998           /* track our progress through the boot sequence */
999           const int LOG_BOOT_PROGRESS_START = 3000;
1000           LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START,  ns2ms(systemTime(SYSTEM_TIME_MONOTONIC)));
1001        }
1002    }
1003
1004    const char* rootDir = getenv("ANDROID_ROOT");
1005    if (rootDir == NULL) {
1006        rootDir = "/system";
1007        if (!hasDir("/system")) {
1008            LOG_FATAL("No root directory specified, and /android does not exist.");
1009            return;
1010        }
1011        setenv("ANDROID_ROOT", rootDir, 1);
1012    }
1013
1014    //const char* kernelHack = getenv("LD_ASSUME_KERNEL");
1015    //ALOGD("Found LD_ASSUME_KERNEL='%s'\n", kernelHack);
1016
1017    /* start the virtual machine */
1018    JniInvocation jni_invocation;
1019    jni_invocation.Init(NULL);
1020    JNIEnv* env;
1021    if (startVm(&mJavaVM, &env, zygote) != 0) {
1022        return;
1023    }
1024    onVmCreated(env);
1025
1026    /*
1027     * Register android functions.
1028     */
1029    if (startReg(env) < 0) {
1030        ALOGE("Unable to register all android natives\n");
1031        return;
1032    }
1033
1034    /*
1035     * We want to call main() with a String array with arguments in it.
1036     * At present we have two arguments, the class name and an option string.
1037     * Create an array to hold them.
1038     */
1039    jclass stringClass;
1040    jobjectArray strArray;
1041    jstring classNameStr;
1042
1043    stringClass = env->FindClass("java/lang/String");
1044    assert(stringClass != NULL);
1045    strArray = env->NewObjectArray(options.size() + 1, stringClass, NULL);
1046    assert(strArray != NULL);
1047    classNameStr = env->NewStringUTF(className);
1048    assert(classNameStr != NULL);
1049    env->SetObjectArrayElement(strArray, 0, classNameStr);
1050
1051    for (size_t i = 0; i < options.size(); ++i) {
1052        jstring optionsStr = env->NewStringUTF(options.itemAt(i).string());
1053        assert(optionsStr != NULL);
1054        env->SetObjectArrayElement(strArray, i + 1, optionsStr);
1055    }
1056
1057    /*
1058     * Start VM.  This thread becomes the main thread of the VM, and will
1059     * not return until the VM exits.
1060     */
1061    char* slashClassName = toSlashClassName(className);
1062    jclass startClass = env->FindClass(slashClassName);
1063    if (startClass == NULL) {
1064        ALOGE("JavaVM unable to locate class '%s'\n", slashClassName);
1065        /* keep going */
1066    } else {
1067        jmethodID startMeth = env->GetStaticMethodID(startClass, "main",
1068            "([Ljava/lang/String;)V");
1069        if (startMeth == NULL) {
1070            ALOGE("JavaVM unable to find main() in '%s'\n", className);
1071            /* keep going */
1072        } else {
1073            env->CallStaticVoidMethod(startClass, startMeth, strArray);
1074
1075#if 0
1076            if (env->ExceptionCheck())
1077                threadExitUncaughtException(env);
1078#endif
1079        }
1080    }
1081    free(slashClassName);
1082
1083    ALOGD("Shutting down VM\n");
1084    if (mJavaVM->DetachCurrentThread() != JNI_OK)
1085        ALOGW("Warning: unable to detach main thread\n");
1086    if (mJavaVM->DestroyJavaVM() != 0)
1087        ALOGW("Warning: VM did not shut down cleanly\n");
1088}
1089
1090void AndroidRuntime::exit(int code)
1091{
1092    if (mExitWithoutCleanup) {
1093        ALOGI("VM exiting with result code %d, cleanup skipped.", code);
1094        ::_exit(code);
1095    } else {
1096        ALOGI("VM exiting with result code %d.", code);
1097        onExit(code);
1098        ::exit(code);
1099    }
1100}
1101
1102void AndroidRuntime::onVmCreated(JNIEnv* env)
1103{
1104    // If AndroidRuntime had anything to do here, we'd have done it in 'start'.
1105}
1106
1107/*
1108 * Get the JNIEnv pointer for this thread.
1109 *
1110 * Returns NULL if the slot wasn't allocated or populated.
1111 */
1112/*static*/ JNIEnv* AndroidRuntime::getJNIEnv()
1113{
1114    JNIEnv* env;
1115    JavaVM* vm = AndroidRuntime::getJavaVM();
1116    assert(vm != NULL);
1117
1118    if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK)
1119        return NULL;
1120    return env;
1121}
1122
1123/*
1124 * Makes the current thread visible to the VM.
1125 *
1126 * The JNIEnv pointer returned is only valid for the current thread, and
1127 * thus must be tucked into thread-local storage.
1128 */
1129static int javaAttachThread(const char* threadName, JNIEnv** pEnv)
1130{
1131    JavaVMAttachArgs args;
1132    JavaVM* vm;
1133    jint result;
1134
1135    vm = AndroidRuntime::getJavaVM();
1136    assert(vm != NULL);
1137
1138    args.version = JNI_VERSION_1_4;
1139    args.name = (char*) threadName;
1140    args.group = NULL;
1141
1142    result = vm->AttachCurrentThread(pEnv, (void*) &args);
1143    if (result != JNI_OK)
1144        ALOGI("NOTE: attach of thread '%s' failed\n", threadName);
1145
1146    return result;
1147}
1148
1149/*
1150 * Detach the current thread from the set visible to the VM.
1151 */
1152static int javaDetachThread(void)
1153{
1154    JavaVM* vm;
1155    jint result;
1156
1157    vm = AndroidRuntime::getJavaVM();
1158    assert(vm != NULL);
1159
1160    result = vm->DetachCurrentThread();
1161    if (result != JNI_OK)
1162        ALOGE("ERROR: thread detach failed\n");
1163    return result;
1164}
1165
1166/*
1167 * When starting a native thread that will be visible from the VM, we
1168 * bounce through this to get the right attach/detach action.
1169 * Note that this function calls free(args)
1170 */
1171/*static*/ int AndroidRuntime::javaThreadShell(void* args) {
1172    void* start = ((void**)args)[0];
1173    void* userData = ((void **)args)[1];
1174    char* name = (char*) ((void **)args)[2];        // we own this storage
1175    free(args);
1176    JNIEnv* env;
1177    int result;
1178
1179    /* hook us into the VM */
1180    if (javaAttachThread(name, &env) != JNI_OK)
1181        return -1;
1182
1183    /* start the thread running */
1184    result = (*(android_thread_func_t)start)(userData);
1185
1186    /* unhook us */
1187    javaDetachThread();
1188    free(name);
1189
1190    return result;
1191}
1192
1193/*
1194 * This is invoked from androidCreateThreadEtc() via the callback
1195 * set with androidSetCreateThreadFunc().
1196 *
1197 * We need to create the new thread in such a way that it gets hooked
1198 * into the VM before it really starts executing.
1199 */
1200/*static*/ int AndroidRuntime::javaCreateThreadEtc(
1201                                android_thread_func_t entryFunction,
1202                                void* userData,
1203                                const char* threadName,
1204                                int32_t threadPriority,
1205                                size_t threadStackSize,
1206                                android_thread_id_t* threadId)
1207{
1208    void** args = (void**) malloc(3 * sizeof(void*));   // javaThreadShell must free
1209    int result;
1210
1211    LOG_ALWAYS_FATAL_IF(threadName == nullptr, "threadName not provided to javaCreateThreadEtc");
1212
1213    args[0] = (void*) entryFunction;
1214    args[1] = userData;
1215    args[2] = (void*) strdup(threadName);   // javaThreadShell must free
1216
1217    result = androidCreateRawThreadEtc(AndroidRuntime::javaThreadShell, args,
1218        threadName, threadPriority, threadStackSize, threadId);
1219    return result;
1220}
1221
1222/*
1223 * Create a thread that is visible from the VM.
1224 *
1225 * This is called from elsewhere in the library.
1226 */
1227/*static*/ android_thread_id_t AndroidRuntime::createJavaThread(const char* name,
1228    void (*start)(void *), void* arg)
1229{
1230    android_thread_id_t threadId = 0;
1231    javaCreateThreadEtc((android_thread_func_t) start, arg, name,
1232        ANDROID_PRIORITY_DEFAULT, 0, &threadId);
1233    return threadId;
1234}
1235
1236#if 0
1237static void quickTest(void* arg)
1238{
1239    const char* str = (const char*) arg;
1240
1241    printf("In quickTest: %s\n", str);
1242}
1243#endif
1244
1245#ifdef NDEBUG
1246    #define REG_JNI(name)      { name }
1247    struct RegJNIRec {
1248        int (*mProc)(JNIEnv*);
1249    };
1250#else
1251    #define REG_JNI(name)      { name, #name }
1252    struct RegJNIRec {
1253        int (*mProc)(JNIEnv*);
1254        const char* mName;
1255    };
1256#endif
1257
1258typedef void (*RegJAMProc)();
1259
1260static int register_jni_procs(const RegJNIRec array[], size_t count, JNIEnv* env)
1261{
1262    for (size_t i = 0; i < count; i++) {
1263        if (array[i].mProc(env) < 0) {
1264#ifndef NDEBUG
1265            ALOGD("----------!!! %s failed to load\n", array[i].mName);
1266#endif
1267            return -1;
1268        }
1269    }
1270    return 0;
1271}
1272
1273static const RegJNIRec gRegJNI[] = {
1274    REG_JNI(register_com_android_internal_os_RuntimeInit),
1275    REG_JNI(register_android_os_SystemClock),
1276    REG_JNI(register_android_util_EventLog),
1277    REG_JNI(register_android_util_Log),
1278    REG_JNI(register_android_util_MemoryIntArray),
1279    REG_JNI(register_android_util_PathParser),
1280    REG_JNI(register_android_app_admin_SecurityLog),
1281    REG_JNI(register_android_content_AssetManager),
1282    REG_JNI(register_android_content_StringBlock),
1283    REG_JNI(register_android_content_XmlBlock),
1284    REG_JNI(register_android_text_AndroidCharacter),
1285    REG_JNI(register_android_text_StaticLayout),
1286    REG_JNI(register_android_text_AndroidBidi),
1287    REG_JNI(register_android_view_InputDevice),
1288    REG_JNI(register_android_view_KeyCharacterMap),
1289    REG_JNI(register_android_os_Process),
1290    REG_JNI(register_android_os_SystemProperties),
1291    REG_JNI(register_android_os_Binder),
1292    REG_JNI(register_android_os_Parcel),
1293    REG_JNI(register_android_os_HwBinder),
1294    REG_JNI(register_android_os_HwBlob),
1295    REG_JNI(register_android_os_HwParcel),
1296    REG_JNI(register_android_os_HwRemoteBinder),
1297    REG_JNI(register_android_nio_utils),
1298    REG_JNI(register_android_graphics_Canvas),
1299    REG_JNI(register_android_graphics_Graphics),
1300    REG_JNI(register_android_view_DisplayEventReceiver),
1301    REG_JNI(register_android_view_RenderNode),
1302    REG_JNI(register_android_view_RenderNodeAnimator),
1303    REG_JNI(register_android_view_GraphicBuffer),
1304    REG_JNI(register_android_view_DisplayListCanvas),
1305    REG_JNI(register_android_view_HardwareLayer),
1306    REG_JNI(register_android_view_ThreadedRenderer),
1307    REG_JNI(register_android_view_Surface),
1308    REG_JNI(register_android_view_SurfaceControl),
1309    REG_JNI(register_android_view_SurfaceSession),
1310    REG_JNI(register_android_view_TextureView),
1311    REG_JNI(register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper),
1312    REG_JNI(register_com_google_android_gles_jni_EGLImpl),
1313    REG_JNI(register_com_google_android_gles_jni_GLImpl),
1314    REG_JNI(register_android_opengl_jni_EGL14),
1315    REG_JNI(register_android_opengl_jni_EGLExt),
1316    REG_JNI(register_android_opengl_jni_GLES10),
1317    REG_JNI(register_android_opengl_jni_GLES10Ext),
1318    REG_JNI(register_android_opengl_jni_GLES11),
1319    REG_JNI(register_android_opengl_jni_GLES11Ext),
1320    REG_JNI(register_android_opengl_jni_GLES20),
1321    REG_JNI(register_android_opengl_jni_GLES30),
1322    REG_JNI(register_android_opengl_jni_GLES31),
1323    REG_JNI(register_android_opengl_jni_GLES31Ext),
1324    REG_JNI(register_android_opengl_jni_GLES32),
1325
1326    REG_JNI(register_android_graphics_Bitmap),
1327    REG_JNI(register_android_graphics_BitmapFactory),
1328    REG_JNI(register_android_graphics_BitmapRegionDecoder),
1329    REG_JNI(register_android_graphics_Camera),
1330    REG_JNI(register_android_graphics_CreateJavaOutputStreamAdaptor),
1331    REG_JNI(register_android_graphics_CanvasProperty),
1332    REG_JNI(register_android_graphics_ColorFilter),
1333    REG_JNI(register_android_graphics_DrawFilter),
1334    REG_JNI(register_android_graphics_FontFamily),
1335    REG_JNI(register_android_graphics_Interpolator),
1336    REG_JNI(register_android_graphics_LayerRasterizer),
1337    REG_JNI(register_android_graphics_MaskFilter),
1338    REG_JNI(register_android_graphics_Matrix),
1339    REG_JNI(register_android_graphics_Movie),
1340    REG_JNI(register_android_graphics_NinePatch),
1341    REG_JNI(register_android_graphics_Paint),
1342    REG_JNI(register_android_graphics_Path),
1343    REG_JNI(register_android_graphics_PathMeasure),
1344    REG_JNI(register_android_graphics_PathEffect),
1345    REG_JNI(register_android_graphics_Picture),
1346    REG_JNI(register_android_graphics_PorterDuff),
1347    REG_JNI(register_android_graphics_Rasterizer),
1348    REG_JNI(register_android_graphics_Region),
1349    REG_JNI(register_android_graphics_Shader),
1350    REG_JNI(register_android_graphics_SurfaceTexture),
1351    REG_JNI(register_android_graphics_Typeface),
1352    REG_JNI(register_android_graphics_Xfermode),
1353    REG_JNI(register_android_graphics_YuvImage),
1354    REG_JNI(register_android_graphics_drawable_AnimatedVectorDrawable),
1355    REG_JNI(register_android_graphics_drawable_VectorDrawable),
1356    REG_JNI(register_android_graphics_pdf_PdfDocument),
1357    REG_JNI(register_android_graphics_pdf_PdfEditor),
1358    REG_JNI(register_android_graphics_pdf_PdfRenderer),
1359
1360    REG_JNI(register_android_database_CursorWindow),
1361    REG_JNI(register_android_database_SQLiteConnection),
1362    REG_JNI(register_android_database_SQLiteGlobal),
1363    REG_JNI(register_android_database_SQLiteDebug),
1364    REG_JNI(register_android_os_Debug),
1365    REG_JNI(register_android_os_FileObserver),
1366    REG_JNI(register_android_os_MessageQueue),
1367    REG_JNI(register_android_os_SELinux),
1368    REG_JNI(register_android_os_Trace),
1369    REG_JNI(register_android_os_UEventObserver),
1370    REG_JNI(register_android_net_LocalSocketImpl),
1371    REG_JNI(register_android_net_NetworkUtils),
1372    REG_JNI(register_android_net_TrafficStats),
1373    REG_JNI(register_android_os_MemoryFile),
1374    REG_JNI(register_com_android_internal_os_PathClassLoaderFactory),
1375    REG_JNI(register_com_android_internal_os_Zygote),
1376    REG_JNI(register_com_android_internal_util_VirtualRefBasePtr),
1377    REG_JNI(register_android_hardware_Camera),
1378    REG_JNI(register_android_hardware_camera2_CameraMetadata),
1379    REG_JNI(register_android_hardware_camera2_legacy_LegacyCameraDevice),
1380    REG_JNI(register_android_hardware_camera2_legacy_PerfMeasurement),
1381    REG_JNI(register_android_hardware_camera2_DngCreator),
1382    REG_JNI(register_android_hardware_Radio),
1383    REG_JNI(register_android_hardware_SensorManager),
1384    REG_JNI(register_android_hardware_SerialPort),
1385    REG_JNI(register_android_hardware_SoundTrigger),
1386    REG_JNI(register_android_hardware_UsbDevice),
1387    REG_JNI(register_android_hardware_UsbDeviceConnection),
1388    REG_JNI(register_android_hardware_UsbRequest),
1389    REG_JNI(register_android_hardware_location_ActivityRecognitionHardware),
1390    REG_JNI(register_android_hardware_location_ContextHubService),
1391    REG_JNI(register_android_media_AudioRecord),
1392    REG_JNI(register_android_media_AudioSystem),
1393    REG_JNI(register_android_media_AudioTrack),
1394    REG_JNI(register_android_media_JetPlayer),
1395    REG_JNI(register_android_media_RemoteDisplay),
1396    REG_JNI(register_android_media_ToneGenerator),
1397
1398    REG_JNI(register_android_opengl_classes),
1399    REG_JNI(register_android_server_NetworkManagementSocketTagger),
1400    REG_JNI(register_android_ddm_DdmHandleNativeHeap),
1401    REG_JNI(register_android_backup_BackupDataInput),
1402    REG_JNI(register_android_backup_BackupDataOutput),
1403    REG_JNI(register_android_backup_FileBackupHelperBase),
1404    REG_JNI(register_android_backup_BackupHelperDispatcher),
1405    REG_JNI(register_android_app_backup_FullBackup),
1406    REG_JNI(register_android_app_Activity),
1407    REG_JNI(register_android_app_ActivityThread),
1408    REG_JNI(register_android_app_ApplicationLoaders),
1409    REG_JNI(register_android_app_NativeActivity),
1410    REG_JNI(register_android_util_jar_StrictJarFile),
1411    REG_JNI(register_android_view_InputChannel),
1412    REG_JNI(register_android_view_InputEventReceiver),
1413    REG_JNI(register_android_view_InputEventSender),
1414    REG_JNI(register_android_view_InputQueue),
1415    REG_JNI(register_android_view_KeyEvent),
1416    REG_JNI(register_android_view_MotionEvent),
1417    REG_JNI(register_android_view_PointerIcon),
1418    REG_JNI(register_android_view_VelocityTracker),
1419
1420    REG_JNI(register_android_content_res_ObbScanner),
1421    REG_JNI(register_android_content_res_Configuration),
1422
1423    REG_JNI(register_android_animation_PropertyValuesHolder),
1424    REG_JNI(register_com_android_internal_content_NativeLibraryHelper),
1425    REG_JNI(register_com_android_internal_net_NetworkStatsFactory),
1426
1427};
1428
1429/*
1430 * Register android native functions with the VM.
1431 */
1432/*static*/ int AndroidRuntime::startReg(JNIEnv* env)
1433{
1434    ATRACE_NAME("RegisterAndroidNatives");
1435    /*
1436     * This hook causes all future threads created in this process to be
1437     * attached to the JavaVM.  (This needs to go away in favor of JNI
1438     * Attach calls.)
1439     */
1440    androidSetCreateThreadFunc((android_create_thread_fn) javaCreateThreadEtc);
1441
1442    ALOGV("--- registering native functions ---\n");
1443
1444    /*
1445     * Every "register" function calls one or more things that return
1446     * a local reference (e.g. FindClass).  Because we haven't really
1447     * started the VM yet, they're all getting stored in the base frame
1448     * and never released.  Use Push/Pop to manage the storage.
1449     */
1450    env->PushLocalFrame(200);
1451
1452    if (register_jni_procs(gRegJNI, NELEM(gRegJNI), env) < 0) {
1453        env->PopLocalFrame(NULL);
1454        return -1;
1455    }
1456    env->PopLocalFrame(NULL);
1457
1458    //createJavaThread("fubar", quickTest, (void*) "hello");
1459
1460    return 0;
1461}
1462
1463AndroidRuntime* AndroidRuntime::getRuntime()
1464{
1465    return gCurRuntime;
1466}
1467
1468/**
1469 * Used by surface flinger's DdmConnection to register native methods from
1470 * the framework.
1471 */
1472extern "C" jint registerFrameworkNatives(JNIEnv* env) {
1473    return register_jni_procs(gRegJNI, NELEM(gRegJNI), env);
1474}
1475}   // namespace android
1476