AndroidRuntime.cpp revision 766431aa57c16ece8842287a92b2e7208e3b8ac3 
1/*
2 * Copyright (C) 2006 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define ATRACE_TAG ATRACE_TAG_DALVIK
18#define LOG_TAG "AndroidRuntime"
19//#define LOG_NDEBUG 0
20
21#include <android_runtime/AndroidRuntime.h>
22#include <binder/IBinder.h>
23#include <binder/IPCThreadState.h>
24#include <binder/IServiceManager.h>
25#include <utils/Log.h>
26#include <utils/misc.h>
27#include <utils/Trace.h>
28#include <binder/Parcel.h>
29#include <utils/threads.h>
30#include <cutils/properties.h>
31
32#include <SkGraphics.h>
33#include <SkImageDecoder.h>
34
35#include "jni.h"
36#include "JNIHelp.h"
37#include "JniInvocation.h"
38#include "android_util_Binder.h"
39
40#include <stdio.h>
41#include <signal.h>
42#include <sys/stat.h>
43#include <sys/types.h>
44#include <signal.h>
45#include <dirent.h>
46#include <assert.h>
47
48#include <string>
49#include <vector>
50
51
52using namespace android;
53
54extern int register_android_os_Binder(JNIEnv* env);
55extern int register_android_os_Process(JNIEnv* env);
56extern int register_android_graphics_Bitmap(JNIEnv*);
57extern int register_android_graphics_BitmapFactory(JNIEnv*);
58extern int register_android_graphics_BitmapRegionDecoder(JNIEnv*);
59extern int register_android_graphics_Camera(JNIEnv* env);
60extern int register_android_graphics_CreateJavaOutputStreamAdaptor(JNIEnv* env);
61extern int register_android_graphics_Graphics(JNIEnv* env);
62extern int register_android_graphics_Interpolator(JNIEnv* env);
63extern int register_android_graphics_MaskFilter(JNIEnv* env);
64extern int register_android_graphics_Movie(JNIEnv* env);
65extern int register_android_graphics_NinePatch(JNIEnv*);
66extern int register_android_graphics_PathEffect(JNIEnv* env);
67extern int register_android_graphics_Shader(JNIEnv* env);
68extern int register_android_graphics_Typeface(JNIEnv* env);
69extern int register_android_graphics_YuvImage(JNIEnv* env);
70
71extern int register_com_google_android_gles_jni_EGLImpl(JNIEnv* env);
72extern int register_com_google_android_gles_jni_GLImpl(JNIEnv* env);
73extern int register_android_opengl_jni_EGL14(JNIEnv* env);
74extern int register_android_opengl_jni_EGLExt(JNIEnv* env);
75extern int register_android_opengl_jni_GLES10(JNIEnv* env);
76extern int register_android_opengl_jni_GLES10Ext(JNIEnv* env);
77extern int register_android_opengl_jni_GLES11(JNIEnv* env);
78extern int register_android_opengl_jni_GLES11Ext(JNIEnv* env);
79extern int register_android_opengl_jni_GLES20(JNIEnv* env);
80extern int register_android_opengl_jni_GLES30(JNIEnv* env);
81extern int register_android_opengl_jni_GLES31(JNIEnv* env);
82extern int register_android_opengl_jni_GLES31Ext(JNIEnv* env);
83extern int register_android_opengl_jni_GLES32(JNIEnv* env);
84
85extern int register_android_hardware_Camera(JNIEnv *env);
86extern int register_android_hardware_camera2_CameraMetadata(JNIEnv *env);
87extern int register_android_hardware_camera2_legacy_LegacyCameraDevice(JNIEnv *env);
88extern int register_android_hardware_camera2_legacy_PerfMeasurement(JNIEnv *env);
89extern int register_android_hardware_camera2_DngCreator(JNIEnv *env);
90extern int register_android_hardware_Radio(JNIEnv *env);
91extern int register_android_hardware_SensorManager(JNIEnv *env);
92extern int register_android_hardware_SerialPort(JNIEnv *env);
93extern int register_android_hardware_SoundTrigger(JNIEnv *env);
94extern int register_android_hardware_UsbDevice(JNIEnv *env);
95extern int register_android_hardware_UsbDeviceConnection(JNIEnv *env);
96extern int register_android_hardware_UsbRequest(JNIEnv *env);
97extern int register_android_hardware_location_ActivityRecognitionHardware(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_auditing_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_PathParser(JNIEnv* env);
116extern int register_android_content_StringBlock(JNIEnv* env);
117extern int register_android_content_XmlBlock(JNIEnv* env);
118extern int register_android_graphics_Canvas(JNIEnv* env);
119extern int register_android_graphics_CanvasProperty(JNIEnv* env);
120extern int register_android_graphics_ColorFilter(JNIEnv* env);
121extern int register_android_graphics_DrawFilter(JNIEnv* env);
122extern int register_android_graphics_FontFamily(JNIEnv* env);
123extern int register_android_graphics_LayerRasterizer(JNIEnv*);
124extern int register_android_graphics_Matrix(JNIEnv* env);
125extern int register_android_graphics_Paint(JNIEnv* env);
126extern int register_android_graphics_Path(JNIEnv* env);
127extern int register_android_graphics_PathMeasure(JNIEnv* env);
128extern int register_android_graphics_Picture(JNIEnv*);
129extern int register_android_graphics_PorterDuff(JNIEnv* env);
130extern int register_android_graphics_Rasterizer(JNIEnv* env);
131extern int register_android_graphics_Region(JNIEnv* env);
132extern int register_android_graphics_SurfaceTexture(JNIEnv* env);
133extern int register_android_graphics_Xfermode(JNIEnv* env);
134extern int register_android_graphics_drawable_AnimatedVectorDrawable(JNIEnv* env);
135extern int register_android_graphics_drawable_VectorDrawable(JNIEnv* env);
136extern int register_android_graphics_pdf_PdfDocument(JNIEnv* env);
137extern int register_android_graphics_pdf_PdfEditor(JNIEnv* env);
138extern int register_android_graphics_pdf_PdfRenderer(JNIEnv* env);
139extern int register_android_view_DisplayEventReceiver(JNIEnv* env);
140extern int register_android_view_DisplayListCanvas(JNIEnv* env);
141extern int register_android_view_GraphicBuffer(JNIEnv* env);
142extern int register_android_view_HardwareLayer(JNIEnv* env);
143extern int register_android_view_RenderNode(JNIEnv* env);
144extern int register_android_view_RenderNodeAnimator(JNIEnv* env);
145extern int register_android_view_Surface(JNIEnv* env);
146extern int register_android_view_SurfaceControl(JNIEnv* env);
147extern int register_android_view_SurfaceSession(JNIEnv* env);
148extern int register_android_view_TextureView(JNIEnv* env);
149extern int register_android_view_ThreadedRenderer(JNIEnv* env);
150extern int register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper(JNIEnv *env);
151extern int register_android_database_CursorWindow(JNIEnv* env);
152extern int register_android_database_SQLiteConnection(JNIEnv* env);
153extern int register_android_database_SQLiteGlobal(JNIEnv* env);
154extern int register_android_database_SQLiteDebug(JNIEnv* env);
155extern int register_android_nio_utils(JNIEnv* env);
156extern int register_android_os_Debug(JNIEnv* env);
157extern int register_android_os_MessageQueue(JNIEnv* env);
158extern int register_android_os_Parcel(JNIEnv* env);
159extern int register_android_os_SELinux(JNIEnv* env);
160extern int register_android_os_SystemProperties(JNIEnv *env);
161extern int register_android_os_SystemClock(JNIEnv* env);
162extern int register_android_os_Trace(JNIEnv* env);
163extern int register_android_os_FileObserver(JNIEnv *env);
164extern int register_android_os_UEventObserver(JNIEnv* env);
165extern int register_android_os_MemoryFile(JNIEnv* env);
166extern int register_android_net_LocalSocketImpl(JNIEnv* env);
167extern int register_android_net_NetworkUtils(JNIEnv* env);
168extern int register_android_net_TrafficStats(JNIEnv* env);
169extern int register_android_text_AndroidCharacter(JNIEnv *env);
170extern int register_android_text_StaticLayout(JNIEnv *env);
171extern int register_android_text_AndroidBidi(JNIEnv *env);
172extern int register_android_opengl_classes(JNIEnv *env);
173extern int register_android_ddm_DdmHandleNativeHeap(JNIEnv *env);
174extern int register_android_server_NetworkManagementSocketTagger(JNIEnv* env);
175extern int register_android_backup_BackupDataInput(JNIEnv *env);
176extern int register_android_backup_BackupDataOutput(JNIEnv *env);
177extern int register_android_backup_FileBackupHelperBase(JNIEnv *env);
178extern int register_android_backup_BackupHelperDispatcher(JNIEnv *env);
179extern int register_android_app_backup_FullBackup(JNIEnv *env);
180extern int register_android_app_ActivityThread(JNIEnv *env);
181extern int register_android_app_NativeActivity(JNIEnv *env);
182extern int register_android_media_RemoteDisplay(JNIEnv *env);
183extern int register_android_util_jar_StrictJarFile(JNIEnv* env);
184extern int register_android_view_InputChannel(JNIEnv* env);
185extern int register_android_view_InputDevice(JNIEnv* env);
186extern int register_android_view_InputEventReceiver(JNIEnv* env);
187extern int register_android_view_InputEventSender(JNIEnv* env);
188extern int register_android_view_InputQueue(JNIEnv* env);
189extern int register_android_view_KeyCharacterMap(JNIEnv *env);
190extern int register_android_view_KeyEvent(JNIEnv* env);
191extern int register_android_view_MotionEvent(JNIEnv* env);
192extern int register_android_view_PointerIcon(JNIEnv* env);
193extern int register_android_view_VelocityTracker(JNIEnv* env);
194extern int register_android_content_res_ObbScanner(JNIEnv* env);
195extern int register_android_content_res_Configuration(JNIEnv* env);
196extern int register_android_animation_PropertyValuesHolder(JNIEnv *env);
197extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env);
198extern int register_com_android_internal_net_NetworkStatsFactory(JNIEnv *env);
199extern int register_com_android_internal_os_Zygote(JNIEnv *env);
200extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env);
201extern int register_android_os_HardwarePropertiesManager(JNIEnv *env);
202
203static AndroidRuntime* gCurRuntime = NULL;
204
205/*
206 * Code written in the Java Programming Language calls here from main().
207 */
208static void com_android_internal_os_RuntimeInit_nativeFinishInit(JNIEnv* env, jobject clazz)
209{
210    gCurRuntime->onStarted();
211}
212
213static void com_android_internal_os_RuntimeInit_nativeZygoteInit(JNIEnv* env, jobject clazz)
214{
215    gCurRuntime->onZygoteInit();
216}
217
218static void com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup(JNIEnv* env,
219        jobject clazz, jboolean exitWithoutCleanup)
220{
221    gCurRuntime->setExitWithoutCleanup(exitWithoutCleanup);
222}
223
224/*
225 * JNI registration.
226 */
227static const JNINativeMethod gMethods[] = {
228    { "nativeFinishInit", "()V",
229        (void*) com_android_internal_os_RuntimeInit_nativeFinishInit },
230    { "nativeZygoteInit", "()V",
231        (void*) com_android_internal_os_RuntimeInit_nativeZygoteInit },
232    { "nativeSetExitWithoutCleanup", "(Z)V",
233        (void*) com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup },
234};
235
236int register_com_android_internal_os_RuntimeInit(JNIEnv* env)
237{
238    return jniRegisterNativeMethods(env, "com/android/internal/os/RuntimeInit",
239        gMethods, NELEM(gMethods));
240}
241
242// ----------------------------------------------------------------------
243
244/*static*/ JavaVM* AndroidRuntime::mJavaVM = NULL;
245
246AndroidRuntime::AndroidRuntime(char* argBlockStart, const size_t argBlockLength) :
247        mExitWithoutCleanup(false),
248        mArgBlockStart(argBlockStart),
249        mArgBlockLength(argBlockLength)
250{
251    SkGraphics::Init();
252    // There is also a global font cache, but its budget is specified by
253    // SK_DEFAULT_FONT_CACHE_COUNT_LIMIT and SK_DEFAULT_FONT_CACHE_LIMIT.
254
255    // Pre-allocate enough space to hold a fair number of options.
256    mOptions.setCapacity(20);
257
258    assert(gCurRuntime == NULL);        // one per process
259    gCurRuntime = this;
260}
261
262AndroidRuntime::~AndroidRuntime()
263{
264    SkGraphics::Term();
265}
266
267/*
268 * Register native methods using JNI.
269 */
270/*static*/ int AndroidRuntime::registerNativeMethods(JNIEnv* env,
271    const char* className, const JNINativeMethod* gMethods, int numMethods)
272{
273    return jniRegisterNativeMethods(env, className, gMethods, numMethods);
274}
275
276void AndroidRuntime::setArgv0(const char* argv0) {
277    memset(mArgBlockStart, 0, mArgBlockLength);
278    strlcpy(mArgBlockStart, argv0, mArgBlockLength);
279}
280
281status_t AndroidRuntime::callMain(const String8& className, jclass clazz,
282    const Vector<String8>& args)
283{
284    JNIEnv* env;
285    jmethodID methodId;
286
287    ALOGD("Calling main entry %s", className.string());
288
289    env = getJNIEnv();
290    if (clazz == NULL || env == NULL) {
291        return UNKNOWN_ERROR;
292    }
293
294    methodId = env->GetStaticMethodID(clazz, "main", "([Ljava/lang/String;)V");
295    if (methodId == NULL) {
296        ALOGE("ERROR: could not find method %s.main(String[])\n", className.string());
297        return UNKNOWN_ERROR;
298    }
299
300    /*
301     * We want to call main() with a String array with our arguments in it.
302     * Create an array and populate it.
303     */
304    jclass stringClass;
305    jobjectArray strArray;
306
307    const size_t numArgs = args.size();
308    stringClass = env->FindClass("java/lang/String");
309    strArray = env->NewObjectArray(numArgs, stringClass, NULL);
310
311    for (size_t i = 0; i < numArgs; i++) {
312        jstring argStr = env->NewStringUTF(args[i].string());
313        env->SetObjectArrayElement(strArray, i, argStr);
314    }
315
316    env->CallStaticVoidMethod(clazz, methodId, strArray);
317    return NO_ERROR;
318}
319
320/*
321 * The VM calls this through the "exit" hook.
322 */
323static void runtime_exit(int code)
324{
325    gCurRuntime->exit(code);
326}
327
328/*
329 * The VM calls this through the "vfprintf" hook.
330 *
331 * We ignore "fp" and just write the results to the log file.
332 */
333static void runtime_vfprintf(FILE* fp, const char* format, va_list ap)
334{
335    LOG_PRI_VA(ANDROID_LOG_INFO, "vm-printf", format, ap);
336}
337
338/**
339 * The VM calls this when mutex contention debugging is enabled to
340 * determine whether or not the blocked thread was a "sensitive thread"
341 * for user responsiveness/smoothess.
342 *
343 * Our policy for this is whether or not we're tracing any StrictMode
344 * events on this thread (which we might've inherited via Binder calls
345 * into us)
346 */
347static bool runtime_isSensitiveThread() {
348    IPCThreadState* state = IPCThreadState::selfOrNull();
349    return state && state->getStrictModePolicy() != 0;
350}
351
352static int hasDir(const char* dir)
353{
354    struct stat s;
355    int res = stat(dir, &s);
356    if (res == 0) {
357        return S_ISDIR(s.st_mode);
358    }
359    return 0;
360}
361
362static bool hasFile(const char* file) {
363    struct stat s;
364    int res = stat(file, &s);
365    if (res == 0) {
366        return S_ISREG(s.st_mode);
367    }
368    return false;
369}
370
371// Convenience wrapper over the property API that returns an
372// std::string.
373std::string getProperty(const char* key, const char* defaultValue) {
374    std::vector<char> temp(PROPERTY_VALUE_MAX);
375    const int len = property_get(key, &temp[0], defaultValue);
376    if (len < 0) {
377        return "";
378    }
379    return std::string(&temp[0], len);
380}
381
382/*
383 * Read the persistent locale. Inspects the following system properties
384 * (in order) and returns the first non-empty property in the list :
385 *
386 * (1) persist.sys.locale
387 * (2) persist.sys.language/country/localevar (country and localevar are
388 * inspected iff. language is non-empty.
389 * (3) ro.product.locale
390 * (4) ro.product.locale.language/region
391 *
392 * Note that we need to inspect persist.sys.language/country/localevar to
393 * preserve language settings for devices that are upgrading from Lollipop
394 * to M. The same goes for ro.product.locale.language/region as well.
395 */
396const std::string readLocale()
397{
398    const std::string locale = getProperty("persist.sys.locale", "");
399    if (!locale.empty()) {
400        return locale;
401    }
402
403    const std::string language = getProperty("persist.sys.language", "");
404    if (!language.empty()) {
405        const std::string country = getProperty("persist.sys.country", "");
406        const std::string variant = getProperty("persist.sys.localevar", "");
407
408        std::string out = language;
409        if (!country.empty()) {
410            out = out + "-" + country;
411        }
412
413        if (!variant.empty()) {
414            out = out + "-" + variant;
415        }
416
417        return out;
418    }
419
420    const std::string productLocale = getProperty("ro.product.locale", "");
421    if (!productLocale.empty()) {
422        return productLocale;
423    }
424
425    // If persist.sys.locale and ro.product.locale are missing,
426    // construct a locale value from the individual locale components.
427    const std::string productLanguage = getProperty("ro.product.locale.language", "en");
428    const std::string productRegion = getProperty("ro.product.locale.region", "US");
429
430    return productLanguage + "-" + productRegion;
431}
432
433void AndroidRuntime::addOption(const char* optionString, void* extraInfo)
434{
435    JavaVMOption opt;
436    opt.optionString = optionString;
437    opt.extraInfo = extraInfo;
438    mOptions.add(opt);
439}
440
441/*
442 * Parse a property containing space-separated options that should be
443 * passed directly to the VM, e.g. "-Xmx32m -verbose:gc -Xregenmap".
444 *
445 * This will cut up "extraOptsBuf" as we chop it into individual options.
446 *
447 * If "quotingArg" is non-null, it is passed before each extra option in mOptions.
448 *
449 * Adds the strings, if any, to mOptions.
450 */
451void AndroidRuntime::parseExtraOpts(char* extraOptsBuf, const char* quotingArg)
452{
453    char* start = extraOptsBuf;
454    char* end = NULL;
455    while (*start != '\0') {
456        while (*start == ' ')                   /* skip leading whitespace */
457            start++;
458        if (*start == '\0')                     /* was trailing ws, bail */
459            break;
460
461        end = start+1;
462        while (*end != ' ' && *end != '\0')     /* find end of token */
463            end++;
464        if (*end == ' ')
465            *end++ = '\0';          /* mark end, advance to indicate more */
466
467        if (quotingArg != NULL) {
468            addOption(quotingArg);
469        }
470        addOption(start);
471        start = end;
472    }
473}
474
475/*
476 * Reads a "property" into "buffer" with a default of "defaultArg". If
477 * the property is non-empty, it is treated as a runtime option such
478 * as "-Xmx32m".
479 *
480 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
481 *
482 * If an argument is found, it is added to mOptions.
483 *
484 * If an option is found, it is added to mOptions and true is
485 * returned. Otherwise false is returned.
486 */
487bool AndroidRuntime::parseRuntimeOption(const char* property,
488                                        char* buffer,
489                                        const char* runtimeArg,
490                                        const char* defaultArg)
491{
492    strcpy(buffer, runtimeArg);
493    size_t runtimeArgLen = strlen(runtimeArg);
494    property_get(property, buffer+runtimeArgLen, defaultArg);
495    if (buffer[runtimeArgLen] == '\0') {
496        return false;
497    }
498    addOption(buffer);
499    return true;
500}
501
502/*
503 * Reads a "property" into "buffer". If the property is non-empty, it
504 * is treated as a dex2oat compiler option that should be
505 * passed as a quoted option, e.g. "-Ximage-compiler-option --compiler-filter=verify-none".
506 *
507 * The "compilerArg" is a prefix for the option such as "--compiler-filter=".
508 *
509 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
510 *
511 * If an option is found, it is added to mOptions and true is
512 * returned. Otherwise false is returned.
513 */
514bool AndroidRuntime::parseCompilerOption(const char* property,
515                                         char* buffer,
516                                         const char* compilerArg,
517                                         const char* quotingArg)
518{
519    strcpy(buffer, compilerArg);
520    size_t compilerArgLen = strlen(compilerArg);
521    property_get(property, buffer+compilerArgLen, "");
522    if (buffer[compilerArgLen] == '\0') {
523        return false;
524    }
525    addOption(quotingArg);
526    addOption(buffer);
527    return true;
528}
529
530/*
531 * Reads a "property" into "buffer". If the property is non-empty, it
532 * is treated as a dex2oat compiler runtime option that should be
533 * passed as a quoted option, e.g. "-Ximage-compiler-option
534 * --runtime-arg -Ximage-compiler-option -Xmx32m".
535 *
536 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
537 *
538 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
539 *
540 * If an option is found, it is added to mOptions and true is
541 * returned. Otherwise false is returned.
542 */
543bool AndroidRuntime::parseCompilerRuntimeOption(const char* property,
544                                                char* buffer,
545                                                const char* runtimeArg,
546                                                const char* quotingArg)
547{
548    strcpy(buffer, runtimeArg);
549    size_t runtimeArgLen = strlen(runtimeArg);
550    property_get(property, buffer+runtimeArgLen, "");
551    if (buffer[runtimeArgLen] == '\0') {
552        return false;
553    }
554    addOption(quotingArg);
555    addOption("--runtime-arg");
556    addOption(quotingArg);
557    addOption(buffer);
558    return true;
559}
560
561/*
562 * Start the Dalvik Virtual Machine.
563 *
564 * Various arguments, most determined by system properties, are passed in.
565 * The "mOptions" vector is updated.
566 *
567 * CAUTION: when adding options in here, be careful not to put the
568 * char buffer inside a nested scope.  Adding the buffer to the
569 * options using mOptions.add() does not copy the buffer, so if the
570 * buffer goes out of scope the option may be overwritten.  It's best
571 * to put the buffer at the top of the function so that it is more
572 * unlikely that someone will surround it in a scope at a later time
573 * and thus introduce a bug.
574 *
575 * Returns 0 on success.
576 */
577int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv, bool zygote)
578{
579    JavaVMInitArgs initArgs;
580    char propBuf[PROPERTY_VALUE_MAX];
581    char stackTraceFileBuf[sizeof("-Xstacktracefile:")-1 + PROPERTY_VALUE_MAX];
582    char jniOptsBuf[sizeof("-Xjniopts:")-1 + PROPERTY_VALUE_MAX];
583    char heapstartsizeOptsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
584    char heapsizeOptsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
585    char heapgrowthlimitOptsBuf[sizeof("-XX:HeapGrowthLimit=")-1 + PROPERTY_VALUE_MAX];
586    char heapminfreeOptsBuf[sizeof("-XX:HeapMinFree=")-1 + PROPERTY_VALUE_MAX];
587    char heapmaxfreeOptsBuf[sizeof("-XX:HeapMaxFree=")-1 + PROPERTY_VALUE_MAX];
588    char usejitOptsBuf[sizeof("-Xusejit:")-1 + PROPERTY_VALUE_MAX];
589    char jitmaxsizeOptsBuf[sizeof("-Xjitmaxsize:")-1 + PROPERTY_VALUE_MAX];
590    char jitinitialsizeOptsBuf[sizeof("-Xjitinitialsize:")-1 + PROPERTY_VALUE_MAX];
591    char jitthresholdOptsBuf[sizeof("-Xjitthreshold:")-1 + PROPERTY_VALUE_MAX];
592    char useJitProfilesOptsBuf[sizeof("-Xjitsaveprofilinginfo:")-1 + PROPERTY_VALUE_MAX];
593    char gctypeOptsBuf[sizeof("-Xgc:")-1 + PROPERTY_VALUE_MAX];
594    char backgroundgcOptsBuf[sizeof("-XX:BackgroundGC=")-1 + PROPERTY_VALUE_MAX];
595    char heaptargetutilizationOptsBuf[sizeof("-XX:HeapTargetUtilization=")-1 + PROPERTY_VALUE_MAX];
596    char cachePruneBuf[sizeof("-Xzygote-max-boot-retry=")-1 + PROPERTY_VALUE_MAX];
597    char dex2oatXmsImageFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
598    char dex2oatXmxImageFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
599    char dex2oatXmsFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
600    char dex2oatXmxFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
601    char dex2oatCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
602    char dex2oatImageCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
603    char dex2oatThreadsBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
604    char dex2oatThreadsImageBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
605    char dex2oat_isa_variant_key[PROPERTY_KEY_MAX];
606    char dex2oat_isa_variant[sizeof("--instruction-set-variant=") -1 + PROPERTY_VALUE_MAX];
607    char dex2oat_isa_features_key[PROPERTY_KEY_MAX];
608    char dex2oat_isa_features[sizeof("--instruction-set-features=") -1 + PROPERTY_VALUE_MAX];
609    char dex2oatFlagsBuf[PROPERTY_VALUE_MAX];
610    char dex2oatImageFlagsBuf[PROPERTY_VALUE_MAX];
611    char extraOptsBuf[PROPERTY_VALUE_MAX];
612    char voldDecryptBuf[PROPERTY_VALUE_MAX];
613    enum {
614      kEMDefault,
615      kEMIntPortable,
616      kEMIntFast,
617      kEMJitCompiler,
618    } executionMode = kEMDefault;
619    char localeOption[sizeof("-Duser.locale=") + PROPERTY_VALUE_MAX];
620    char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:")-1 + PROPERTY_VALUE_MAX];
621    char nativeBridgeLibrary[sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX];
622    char cpuAbiListBuf[sizeof("--cpu-abilist=") + PROPERTY_VALUE_MAX];
623    char methodTraceFileBuf[sizeof("-Xmethod-trace-file:") + PROPERTY_VALUE_MAX];
624    char methodTraceFileSizeBuf[sizeof("-Xmethod-trace-file-size:") + PROPERTY_VALUE_MAX];
625    char fingerprintBuf[sizeof("-Xfingerprint:") + PROPERTY_VALUE_MAX];
626
627    bool checkJni = false;
628    property_get("dalvik.vm.checkjni", propBuf, "");
629    if (strcmp(propBuf, "true") == 0) {
630        checkJni = true;
631    } else if (strcmp(propBuf, "false") != 0) {
632        /* property is neither true nor false; fall back on kernel parameter */
633        property_get("ro.kernel.android.checkjni", propBuf, "");
634        if (propBuf[0] == '1') {
635            checkJni = true;
636        }
637    }
638    ALOGD("CheckJNI is %s\n", checkJni ? "ON" : "OFF");
639    if (checkJni) {
640        /* extended JNI checking */
641        addOption("-Xcheck:jni");
642
643        /* with -Xcheck:jni, this provides a JNI function call trace */
644        //addOption("-verbose:jni");
645    }
646
647    property_get("dalvik.vm.execution-mode", propBuf, "");
648    if (strcmp(propBuf, "int:portable") == 0) {
649        executionMode = kEMIntPortable;
650    } else if (strcmp(propBuf, "int:fast") == 0) {
651        executionMode = kEMIntFast;
652    } else if (strcmp(propBuf, "int:jit") == 0) {
653        executionMode = kEMJitCompiler;
654    }
655
656    parseRuntimeOption("dalvik.vm.stack-trace-file", stackTraceFileBuf, "-Xstacktracefile:");
657
658    strcpy(jniOptsBuf, "-Xjniopts:");
659    if (parseRuntimeOption("dalvik.vm.jniopts", jniOptsBuf, "-Xjniopts:")) {
660        ALOGI("JNI options: '%s'\n", jniOptsBuf);
661    }
662
663    /* route exit() to our handler */
664    addOption("exit", (void*) runtime_exit);
665
666    /* route fprintf() to our handler */
667    addOption("vfprintf", (void*) runtime_vfprintf);
668
669    /* register the framework-specific "is sensitive thread" hook */
670    addOption("sensitiveThread", (void*) runtime_isSensitiveThread);
671
672    /* enable verbose; standard options are { jni, gc, class } */
673    //addOption("-verbose:jni");
674    addOption("-verbose:gc");
675    //addOption("-verbose:class");
676
677    /*
678     * The default starting and maximum size of the heap.  Larger
679     * values should be specified in a product property override.
680     */
681    parseRuntimeOption("dalvik.vm.heapstartsize", heapstartsizeOptsBuf, "-Xms", "4m");
682    parseRuntimeOption("dalvik.vm.heapsize", heapsizeOptsBuf, "-Xmx", "16m");
683
684    parseRuntimeOption("dalvik.vm.heapgrowthlimit", heapgrowthlimitOptsBuf, "-XX:HeapGrowthLimit=");
685    parseRuntimeOption("dalvik.vm.heapminfree", heapminfreeOptsBuf, "-XX:HeapMinFree=");
686    parseRuntimeOption("dalvik.vm.heapmaxfree", heapmaxfreeOptsBuf, "-XX:HeapMaxFree=");
687    parseRuntimeOption("dalvik.vm.heaptargetutilization",
688                       heaptargetutilizationOptsBuf,
689                       "-XX:HeapTargetUtilization=");
690
691    /*
692     * JIT related options.
693     */
694    parseRuntimeOption("dalvik.vm.usejit", usejitOptsBuf, "-Xusejit:");
695    parseRuntimeOption("dalvik.vm.jitmaxsize", jitmaxsizeOptsBuf, "-Xjitmaxsize:");
696    parseRuntimeOption("dalvik.vm.jitinitialsize", jitinitialsizeOptsBuf, "-Xjitinitialsize:");
697    parseRuntimeOption("dalvik.vm.jitthreshold", jitthresholdOptsBuf, "-Xjitthreshold:");
698    property_get("dalvik.vm.usejitprofiles", useJitProfilesOptsBuf, "");
699    if (strcmp(useJitProfilesOptsBuf, "true") == 0) {
700        addOption("-Xjitsaveprofilinginfo");
701    }
702
703    property_get("ro.config.low_ram", propBuf, "");
704    if (strcmp(propBuf, "true") == 0) {
705      addOption("-XX:LowMemoryMode");
706    }
707
708    parseRuntimeOption("dalvik.vm.gctype", gctypeOptsBuf, "-Xgc:");
709    parseRuntimeOption("dalvik.vm.backgroundgctype", backgroundgcOptsBuf, "-XX:BackgroundGC=");
710
711    /*
712     * Enable debugging only for apps forked from zygote.
713     * Set suspend=y to pause during VM init and use android ADB transport.
714     */
715    if (zygote) {
716      addOption("-agentlib:jdwp=transport=dt_android_adb,suspend=n,server=y");
717    }
718
719    parseRuntimeOption("dalvik.vm.lockprof.threshold",
720                       lockProfThresholdBuf,
721                       "-Xlockprofthreshold:");
722
723    if (executionMode == kEMIntPortable) {
724        addOption("-Xint:portable");
725    } else if (executionMode == kEMIntFast) {
726        addOption("-Xint:fast");
727    } else if (executionMode == kEMJitCompiler) {
728        addOption("-Xint:jit");
729    }
730
731    // If we are booting without the real /data, don't spend time compiling.
732    property_get("vold.decrypt", voldDecryptBuf, "");
733    bool skip_compilation = ((strcmp(voldDecryptBuf, "trigger_restart_min_framework") == 0) ||
734                             (strcmp(voldDecryptBuf, "1") == 0));
735
736    // Extra options for boot.art/boot.oat image generation.
737    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xms", dex2oatXmsImageFlagsBuf,
738                               "-Xms", "-Ximage-compiler-option");
739    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xmx", dex2oatXmxImageFlagsBuf,
740                               "-Xmx", "-Ximage-compiler-option");
741    if (skip_compilation) {
742        addOption("-Ximage-compiler-option");
743        addOption("--compiler-filter=verify-none");
744    } else {
745        parseCompilerOption("dalvik.vm.image-dex2oat-filter", dex2oatImageCompilerFilterBuf,
746                            "--compiler-filter=", "-Ximage-compiler-option");
747    }
748
749    // Make sure there is a preloaded-classes file.
750    if (!hasFile("/system/etc/preloaded-classes")) {
751        ALOGE("Missing preloaded-classes file, /system/etc/preloaded-classes not found: %s\n",
752              strerror(errno));
753        return -1;
754    }
755    addOption("-Ximage-compiler-option");
756    addOption("--image-classes=/system/etc/preloaded-classes");
757
758    // If there is a compiled-classes file, push it.
759    if (hasFile("/system/etc/compiled-classes")) {
760        addOption("-Ximage-compiler-option");
761        addOption("--compiled-classes=/system/etc/compiled-classes");
762    }
763
764    property_get("dalvik.vm.image-dex2oat-flags", dex2oatImageFlagsBuf, "");
765    parseExtraOpts(dex2oatImageFlagsBuf, "-Ximage-compiler-option");
766
767    // Extra options for DexClassLoader.
768    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xms", dex2oatXmsFlagsBuf,
769                               "-Xms", "-Xcompiler-option");
770    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xmx", dex2oatXmxFlagsBuf,
771                               "-Xmx", "-Xcompiler-option");
772    if (skip_compilation) {
773        addOption("-Xcompiler-option");
774        addOption("--compiler-filter=verify-none");
775
776        // We skip compilation when a minimal runtime is brought up for decryption. In that case
777        // /data is temporarily backed by a tmpfs, which is usually small.
778        // If the system image contains prebuilts, they will be relocated into the tmpfs. In this
779        // specific situation it is acceptable to *not* relocate and run out of the prebuilts
780        // directly instead.
781        addOption("--runtime-arg");
782        addOption("-Xnorelocate");
783    } else {
784        parseCompilerOption("dalvik.vm.dex2oat-filter", dex2oatCompilerFilterBuf,
785                            "--compiler-filter=", "-Xcompiler-option");
786    }
787    parseCompilerOption("dalvik.vm.dex2oat-threads", dex2oatThreadsBuf, "-j", "-Xcompiler-option");
788    parseCompilerOption("dalvik.vm.image-dex2oat-threads", dex2oatThreadsImageBuf, "-j",
789                        "-Ximage-compiler-option");
790
791    // The runtime will compile a boot image, when necessary, not using installd. Thus, we need to
792    // pass the instruction-set-features/variant as an image-compiler-option.
793    // TODO: Find a better way for the instruction-set.
794#if defined(__arm__)
795    constexpr const char* instruction_set = "arm";
796#elif defined(__aarch64__)
797    constexpr const char* instruction_set = "arm64";
798#elif defined(__mips__) && !defined(__LP64__)
799    constexpr const char* instruction_set = "mips";
800#elif defined(__mips__) && defined(__LP64__)
801    constexpr const char* instruction_set = "mips64";
802#elif defined(__i386__)
803    constexpr const char* instruction_set = "x86";
804#elif defined(__x86_64__)
805    constexpr const char* instruction_set = "x86_64";
806#else
807    constexpr const char* instruction_set = "unknown";
808#endif
809    // Note: it is OK to reuse the buffer, as the values are exactly the same between
810    //       * compiler-option, used for runtime compilation (DexClassLoader)
811    //       * image-compiler-option, used for boot-image compilation on device
812
813    // Copy the variant.
814    sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set);
815    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
816                        "--instruction-set-variant=", "-Ximage-compiler-option");
817    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
818                        "--instruction-set-variant=", "-Xcompiler-option");
819    // Copy the features.
820    sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set);
821    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
822                        "--instruction-set-features=", "-Ximage-compiler-option");
823    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
824                        "--instruction-set-features=", "-Xcompiler-option");
825
826
827    property_get("dalvik.vm.dex2oat-flags", dex2oatFlagsBuf, "");
828    parseExtraOpts(dex2oatFlagsBuf, "-Xcompiler-option");
829
830    /* extra options; parse this late so it overrides others */
831    property_get("dalvik.vm.extra-opts", extraOptsBuf, "");
832    parseExtraOpts(extraOptsBuf, NULL);
833
834    /* Set the properties for locale */
835    {
836        strcpy(localeOption, "-Duser.locale=");
837        const std::string locale = readLocale();
838        strncat(localeOption, locale.c_str(), PROPERTY_VALUE_MAX);
839        addOption(localeOption);
840    }
841
842    // Trace files are stored in /data/misc/trace which is writable only in debug mode.
843    property_get("ro.debuggable", propBuf, "0");
844    if (strcmp(propBuf, "1") == 0) {
845        property_get("dalvik.vm.method-trace", propBuf, "false");
846        if (strcmp(propBuf, "true") == 0) {
847            addOption("-Xmethod-trace");
848            parseRuntimeOption("dalvik.vm.method-trace-file",
849                               methodTraceFileBuf,
850                               "-Xmethod-trace-file:");
851            parseRuntimeOption("dalvik.vm.method-trace-file-siz",
852                               methodTraceFileSizeBuf,
853                               "-Xmethod-trace-file-size:");
854            property_get("dalvik.vm.method-trace-stream", propBuf, "false");
855            if (strcmp(propBuf, "true") == 0) {
856                addOption("-Xmethod-trace-stream");
857            }
858        }
859    }
860
861    // Native bridge library. "0" means that native bridge is disabled.
862    property_get("ro.dalvik.vm.native.bridge", propBuf, "");
863    if (propBuf[0] == '\0') {
864        ALOGW("ro.dalvik.vm.native.bridge is not expected to be empty");
865    } else if (strcmp(propBuf, "0") != 0) {
866        snprintf(nativeBridgeLibrary, sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX,
867                 "-XX:NativeBridge=%s", propBuf);
868        addOption(nativeBridgeLibrary);
869    }
870
871#if defined(__LP64__)
872    const char* cpu_abilist_property_name = "ro.product.cpu.abilist64";
873#else
874    const char* cpu_abilist_property_name = "ro.product.cpu.abilist32";
875#endif  // defined(__LP64__)
876    property_get(cpu_abilist_property_name, propBuf, "");
877    if (propBuf[0] == '\0') {
878        ALOGE("%s is not expected to be empty", cpu_abilist_property_name);
879        return -1;
880    }
881    snprintf(cpuAbiListBuf, sizeof(cpuAbiListBuf), "--cpu-abilist=%s", propBuf);
882    addOption(cpuAbiListBuf);
883
884    // Dalvik-cache pruning counter.
885    parseRuntimeOption("dalvik.vm.zygote.max-boot-retry", cachePruneBuf,
886                       "-Xzygote-max-boot-retry=");
887
888    /*
889     * When running with debug.generate-debug-info, add --generate-debug-info to
890     * the compiler options so that the boot image, if it is compiled on device,
891     * will include native debugging information.
892     */
893    property_get("debug.generate-debug-info", propBuf, "");
894    if (strcmp(propBuf, "true") == 0) {
895        addOption("-Xcompiler-option");
896        addOption("--generate-debug-info");
897        addOption("-Ximage-compiler-option");
898        addOption("--generate-debug-info");
899    }
900
901    /*
902     * Retrieve the build fingerprint and provide it to the runtime. That way, ANR dumps will
903     * contain the fingerprint and can be parsed.
904     */
905    parseRuntimeOption("ro.build.fingerprint", fingerprintBuf, "-Xfingerprint:");
906
907    initArgs.version = JNI_VERSION_1_4;
908    initArgs.options = mOptions.editArray();
909    initArgs.nOptions = mOptions.size();
910    initArgs.ignoreUnrecognized = JNI_FALSE;
911
912    /*
913     * Initialize the VM.
914     *
915     * The JavaVM* is essentially per-process, and the JNIEnv* is per-thread.
916     * If this call succeeds, the VM is ready, and we can start issuing
917     * JNI calls.
918     */
919    if (JNI_CreateJavaVM(pJavaVM, pEnv, &initArgs) < 0) {
920        ALOGE("JNI_CreateJavaVM failed\n");
921        return -1;
922    }
923
924    return 0;
925}
926
927char* AndroidRuntime::toSlashClassName(const char* className)
928{
929    char* result = strdup(className);
930    for (char* cp = result; *cp != '\0'; cp++) {
931        if (*cp == '.') {
932            *cp = '/';
933        }
934    }
935    return result;
936}
937
938/** Create a Java string from an ASCII or Latin-1 string */
939jstring AndroidRuntime::NewStringLatin1(JNIEnv* env, const char* bytes) {
940    if (!bytes) return NULL;
941    int length = strlen(bytes);
942    jchar* buffer = (jchar *)alloca(length * sizeof(jchar));
943    if (!buffer) return NULL;
944    jchar* chp = buffer;
945    for (int i = 0; i < length; i++) {
946        *chp++ = *bytes++;
947    }
948    return env->NewString(buffer, length);
949}
950
951
952/*
953 * Start the Android runtime.  This involves starting the virtual machine
954 * and calling the "static void main(String[] args)" method in the class
955 * named by "className".
956 *
957 * Passes the main function two arguments, the class name and the specified
958 * options string.
959 */
960void AndroidRuntime::start(const char* className, const Vector<String8>& options, bool zygote)
961{
962    ALOGD(">>>>>> START %s uid %d <<<<<<\n",
963            className != NULL ? className : "(unknown)", getuid());
964
965    static const String8 startSystemServer("start-system-server");
966
967    /*
968     * 'startSystemServer == true' means runtime is obsolete and not run from
969     * init.rc anymore, so we print out the boot start event here.
970     */
971    for (size_t i = 0; i < options.size(); ++i) {
972        if (options[i] == startSystemServer) {
973           /* track our progress through the boot sequence */
974           const int LOG_BOOT_PROGRESS_START = 3000;
975           LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START,  ns2ms(systemTime(SYSTEM_TIME_MONOTONIC)));
976        }
977    }
978
979    const char* rootDir = getenv("ANDROID_ROOT");
980    if (rootDir == NULL) {
981        rootDir = "/system";
982        if (!hasDir("/system")) {
983            LOG_FATAL("No root directory specified, and /android does not exist.");
984            return;
985        }
986        setenv("ANDROID_ROOT", rootDir, 1);
987    }
988
989    //const char* kernelHack = getenv("LD_ASSUME_KERNEL");
990    //ALOGD("Found LD_ASSUME_KERNEL='%s'\n", kernelHack);
991
992    /* start the virtual machine */
993    JniInvocation jni_invocation;
994    jni_invocation.Init(NULL);
995    JNIEnv* env;
996    if (startVm(&mJavaVM, &env, zygote) != 0) {
997        return;
998    }
999    onVmCreated(env);
1000
1001    /*
1002     * Register android functions.
1003     */
1004    if (startReg(env) < 0) {
1005        ALOGE("Unable to register all android natives\n");
1006        return;
1007    }
1008
1009    /*
1010     * We want to call main() with a String array with arguments in it.
1011     * At present we have two arguments, the class name and an option string.
1012     * Create an array to hold them.
1013     */
1014    jclass stringClass;
1015    jobjectArray strArray;
1016    jstring classNameStr;
1017
1018    stringClass = env->FindClass("java/lang/String");
1019    assert(stringClass != NULL);
1020    strArray = env->NewObjectArray(options.size() + 1, stringClass, NULL);
1021    assert(strArray != NULL);
1022    classNameStr = env->NewStringUTF(className);
1023    assert(classNameStr != NULL);
1024    env->SetObjectArrayElement(strArray, 0, classNameStr);
1025
1026    for (size_t i = 0; i < options.size(); ++i) {
1027        jstring optionsStr = env->NewStringUTF(options.itemAt(i).string());
1028        assert(optionsStr != NULL);
1029        env->SetObjectArrayElement(strArray, i + 1, optionsStr);
1030    }
1031
1032    /*
1033     * Start VM.  This thread becomes the main thread of the VM, and will
1034     * not return until the VM exits.
1035     */
1036    char* slashClassName = toSlashClassName(className);
1037    jclass startClass = env->FindClass(slashClassName);
1038    if (startClass == NULL) {
1039        ALOGE("JavaVM unable to locate class '%s'\n", slashClassName);
1040        /* keep going */
1041    } else {
1042        jmethodID startMeth = env->GetStaticMethodID(startClass, "main",
1043            "([Ljava/lang/String;)V");
1044        if (startMeth == NULL) {
1045            ALOGE("JavaVM unable to find main() in '%s'\n", className);
1046            /* keep going */
1047        } else {
1048            env->CallStaticVoidMethod(startClass, startMeth, strArray);
1049
1050#if 0
1051            if (env->ExceptionCheck())
1052                threadExitUncaughtException(env);
1053#endif
1054        }
1055    }
1056    free(slashClassName);
1057
1058    ALOGD("Shutting down VM\n");
1059    if (mJavaVM->DetachCurrentThread() != JNI_OK)
1060        ALOGW("Warning: unable to detach main thread\n");
1061    if (mJavaVM->DestroyJavaVM() != 0)
1062        ALOGW("Warning: VM did not shut down cleanly\n");
1063}
1064
1065void AndroidRuntime::exit(int code)
1066{
1067    if (mExitWithoutCleanup) {
1068        ALOGI("VM exiting with result code %d, cleanup skipped.", code);
1069        ::_exit(code);
1070    } else {
1071        ALOGI("VM exiting with result code %d.", code);
1072        onExit(code);
1073        ::exit(code);
1074    }
1075}
1076
1077void AndroidRuntime::onVmCreated(JNIEnv* env)
1078{
1079    // If AndroidRuntime had anything to do here, we'd have done it in 'start'.
1080}
1081
1082/*
1083 * Get the JNIEnv pointer for this thread.
1084 *
1085 * Returns NULL if the slot wasn't allocated or populated.
1086 */
1087/*static*/ JNIEnv* AndroidRuntime::getJNIEnv()
1088{
1089    JNIEnv* env;
1090    JavaVM* vm = AndroidRuntime::getJavaVM();
1091    assert(vm != NULL);
1092
1093    if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK)
1094        return NULL;
1095    return env;
1096}
1097
1098/*
1099 * Makes the current thread visible to the VM.
1100 *
1101 * The JNIEnv pointer returned is only valid for the current thread, and
1102 * thus must be tucked into thread-local storage.
1103 */
1104static int javaAttachThread(const char* threadName, JNIEnv** pEnv)
1105{
1106    JavaVMAttachArgs args;
1107    JavaVM* vm;
1108    jint result;
1109
1110    vm = AndroidRuntime::getJavaVM();
1111    assert(vm != NULL);
1112
1113    args.version = JNI_VERSION_1_4;
1114    args.name = (char*) threadName;
1115    args.group = NULL;
1116
1117    result = vm->AttachCurrentThread(pEnv, (void*) &args);
1118    if (result != JNI_OK)
1119        ALOGI("NOTE: attach of thread '%s' failed\n", threadName);
1120
1121    return result;
1122}
1123
1124/*
1125 * Detach the current thread from the set visible to the VM.
1126 */
1127static int javaDetachThread(void)
1128{
1129    JavaVM* vm;
1130    jint result;
1131
1132    vm = AndroidRuntime::getJavaVM();
1133    assert(vm != NULL);
1134
1135    result = vm->DetachCurrentThread();
1136    if (result != JNI_OK)
1137        ALOGE("ERROR: thread detach failed\n");
1138    return result;
1139}
1140
1141/*
1142 * When starting a native thread that will be visible from the VM, we
1143 * bounce through this to get the right attach/detach action.
1144 * Note that this function calls free(args)
1145 */
1146/*static*/ int AndroidRuntime::javaThreadShell(void* args) {
1147    void* start = ((void**)args)[0];
1148    void* userData = ((void **)args)[1];
1149    char* name = (char*) ((void **)args)[2];        // we own this storage
1150    free(args);
1151    JNIEnv* env;
1152    int result;
1153
1154    /* hook us into the VM */
1155    if (javaAttachThread(name, &env) != JNI_OK)
1156        return -1;
1157
1158    /* start the thread running */
1159    result = (*(android_thread_func_t)start)(userData);
1160
1161    /* unhook us */
1162    javaDetachThread();
1163    free(name);
1164
1165    return result;
1166}
1167
1168/*
1169 * This is invoked from androidCreateThreadEtc() via the callback
1170 * set with androidSetCreateThreadFunc().
1171 *
1172 * We need to create the new thread in such a way that it gets hooked
1173 * into the VM before it really starts executing.
1174 */
1175/*static*/ int AndroidRuntime::javaCreateThreadEtc(
1176                                android_thread_func_t entryFunction,
1177                                void* userData,
1178                                const char* threadName,
1179                                int32_t threadPriority,
1180                                size_t threadStackSize,
1181                                android_thread_id_t* threadId)
1182{
1183    void** args = (void**) malloc(3 * sizeof(void*));   // javaThreadShell must free
1184    int result;
1185
1186    if (!threadName)
1187        threadName = "unnamed thread";
1188
1189    args[0] = (void*) entryFunction;
1190    args[1] = userData;
1191    args[2] = (void*) strdup(threadName);   // javaThreadShell must free
1192
1193    result = androidCreateRawThreadEtc(AndroidRuntime::javaThreadShell, args,
1194        threadName, threadPriority, threadStackSize, threadId);
1195    return result;
1196}
1197
1198/*
1199 * Create a thread that is visible from the VM.
1200 *
1201 * This is called from elsewhere in the library.
1202 */
1203/*static*/ android_thread_id_t AndroidRuntime::createJavaThread(const char* name,
1204    void (*start)(void *), void* arg)
1205{
1206    android_thread_id_t threadId = 0;
1207    javaCreateThreadEtc((android_thread_func_t) start, arg, name,
1208        ANDROID_PRIORITY_DEFAULT, 0, &threadId);
1209    return threadId;
1210}
1211
1212#if 0
1213static void quickTest(void* arg)
1214{
1215    const char* str = (const char*) arg;
1216
1217    printf("In quickTest: %s\n", str);
1218}
1219#endif
1220
1221#ifdef NDEBUG
1222    #define REG_JNI(name)      { name }
1223    struct RegJNIRec {
1224        int (*mProc)(JNIEnv*);
1225    };
1226#else
1227    #define REG_JNI(name)      { name, #name }
1228    struct RegJNIRec {
1229        int (*mProc)(JNIEnv*);
1230        const char* mName;
1231    };
1232#endif
1233
1234typedef void (*RegJAMProc)();
1235
1236static int register_jni_procs(const RegJNIRec array[], size_t count, JNIEnv* env)
1237{
1238    for (size_t i = 0; i < count; i++) {
1239        if (array[i].mProc(env) < 0) {
1240#ifndef NDEBUG
1241            ALOGD("----------!!! %s failed to load\n", array[i].mName);
1242#endif
1243            return -1;
1244        }
1245    }
1246    return 0;
1247}
1248
1249static const RegJNIRec gRegJNI[] = {
1250    REG_JNI(register_com_android_internal_os_RuntimeInit),
1251    REG_JNI(register_android_os_SystemClock),
1252    REG_JNI(register_android_util_EventLog),
1253    REG_JNI(register_android_util_Log),
1254    REG_JNI(register_android_util_PathParser),
1255    REG_JNI(register_android_auditing_SecurityLog),
1256    REG_JNI(register_android_content_AssetManager),
1257    REG_JNI(register_android_content_StringBlock),
1258    REG_JNI(register_android_content_XmlBlock),
1259    REG_JNI(register_android_text_AndroidCharacter),
1260    REG_JNI(register_android_text_StaticLayout),
1261    REG_JNI(register_android_text_AndroidBidi),
1262    REG_JNI(register_android_view_InputDevice),
1263    REG_JNI(register_android_view_KeyCharacterMap),
1264    REG_JNI(register_android_os_Process),
1265    REG_JNI(register_android_os_SystemProperties),
1266    REG_JNI(register_android_os_Binder),
1267    REG_JNI(register_android_os_Parcel),
1268    REG_JNI(register_android_nio_utils),
1269    REG_JNI(register_android_graphics_Canvas),
1270    REG_JNI(register_android_graphics_Graphics),
1271    REG_JNI(register_android_view_DisplayEventReceiver),
1272    REG_JNI(register_android_view_RenderNode),
1273    REG_JNI(register_android_view_RenderNodeAnimator),
1274    REG_JNI(register_android_view_GraphicBuffer),
1275    REG_JNI(register_android_view_DisplayListCanvas),
1276    REG_JNI(register_android_view_HardwareLayer),
1277    REG_JNI(register_android_view_ThreadedRenderer),
1278    REG_JNI(register_android_view_Surface),
1279    REG_JNI(register_android_view_SurfaceControl),
1280    REG_JNI(register_android_view_SurfaceSession),
1281    REG_JNI(register_android_view_TextureView),
1282    REG_JNI(register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper),
1283    REG_JNI(register_com_google_android_gles_jni_EGLImpl),
1284    REG_JNI(register_com_google_android_gles_jni_GLImpl),
1285    REG_JNI(register_android_opengl_jni_EGL14),
1286    REG_JNI(register_android_opengl_jni_EGLExt),
1287    REG_JNI(register_android_opengl_jni_GLES10),
1288    REG_JNI(register_android_opengl_jni_GLES10Ext),
1289    REG_JNI(register_android_opengl_jni_GLES11),
1290    REG_JNI(register_android_opengl_jni_GLES11Ext),
1291    REG_JNI(register_android_opengl_jni_GLES20),
1292    REG_JNI(register_android_opengl_jni_GLES30),
1293    REG_JNI(register_android_opengl_jni_GLES31),
1294    REG_JNI(register_android_opengl_jni_GLES31Ext),
1295    REG_JNI(register_android_opengl_jni_GLES32),
1296
1297    REG_JNI(register_android_graphics_Bitmap),
1298    REG_JNI(register_android_graphics_BitmapFactory),
1299    REG_JNI(register_android_graphics_BitmapRegionDecoder),
1300    REG_JNI(register_android_graphics_Camera),
1301    REG_JNI(register_android_graphics_CreateJavaOutputStreamAdaptor),
1302    REG_JNI(register_android_graphics_CanvasProperty),
1303    REG_JNI(register_android_graphics_ColorFilter),
1304    REG_JNI(register_android_graphics_DrawFilter),
1305    REG_JNI(register_android_graphics_FontFamily),
1306    REG_JNI(register_android_graphics_Interpolator),
1307    REG_JNI(register_android_graphics_LayerRasterizer),
1308    REG_JNI(register_android_graphics_MaskFilter),
1309    REG_JNI(register_android_graphics_Matrix),
1310    REG_JNI(register_android_graphics_Movie),
1311    REG_JNI(register_android_graphics_NinePatch),
1312    REG_JNI(register_android_graphics_Paint),
1313    REG_JNI(register_android_graphics_Path),
1314    REG_JNI(register_android_graphics_PathMeasure),
1315    REG_JNI(register_android_graphics_PathEffect),
1316    REG_JNI(register_android_graphics_Picture),
1317    REG_JNI(register_android_graphics_PorterDuff),
1318    REG_JNI(register_android_graphics_Rasterizer),
1319    REG_JNI(register_android_graphics_Region),
1320    REG_JNI(register_android_graphics_Shader),
1321    REG_JNI(register_android_graphics_SurfaceTexture),
1322    REG_JNI(register_android_graphics_Typeface),
1323    REG_JNI(register_android_graphics_Xfermode),
1324    REG_JNI(register_android_graphics_YuvImage),
1325    REG_JNI(register_android_graphics_drawable_AnimatedVectorDrawable),
1326    REG_JNI(register_android_graphics_drawable_VectorDrawable),
1327    REG_JNI(register_android_graphics_pdf_PdfDocument),
1328    REG_JNI(register_android_graphics_pdf_PdfEditor),
1329    REG_JNI(register_android_graphics_pdf_PdfRenderer),
1330
1331    REG_JNI(register_android_database_CursorWindow),
1332    REG_JNI(register_android_database_SQLiteConnection),
1333    REG_JNI(register_android_database_SQLiteGlobal),
1334    REG_JNI(register_android_database_SQLiteDebug),
1335    REG_JNI(register_android_os_Debug),
1336    REG_JNI(register_android_os_FileObserver),
1337    REG_JNI(register_android_os_MessageQueue),
1338    REG_JNI(register_android_os_SELinux),
1339    REG_JNI(register_android_os_Trace),
1340    REG_JNI(register_android_os_UEventObserver),
1341    REG_JNI(register_android_net_LocalSocketImpl),
1342    REG_JNI(register_android_net_NetworkUtils),
1343    REG_JNI(register_android_net_TrafficStats),
1344    REG_JNI(register_android_os_MemoryFile),
1345    REG_JNI(register_com_android_internal_os_Zygote),
1346    REG_JNI(register_com_android_internal_util_VirtualRefBasePtr),
1347    REG_JNI(register_android_hardware_Camera),
1348    REG_JNI(register_android_hardware_camera2_CameraMetadata),
1349    REG_JNI(register_android_hardware_camera2_legacy_LegacyCameraDevice),
1350    REG_JNI(register_android_hardware_camera2_legacy_PerfMeasurement),
1351    REG_JNI(register_android_hardware_camera2_DngCreator),
1352    REG_JNI(register_android_hardware_Radio),
1353    REG_JNI(register_android_hardware_SensorManager),
1354    REG_JNI(register_android_hardware_SerialPort),
1355    REG_JNI(register_android_hardware_SoundTrigger),
1356    REG_JNI(register_android_hardware_UsbDevice),
1357    REG_JNI(register_android_hardware_UsbDeviceConnection),
1358    REG_JNI(register_android_hardware_UsbRequest),
1359    REG_JNI(register_android_hardware_location_ActivityRecognitionHardware),
1360    REG_JNI(register_android_media_AudioRecord),
1361    REG_JNI(register_android_media_AudioSystem),
1362    REG_JNI(register_android_media_AudioTrack),
1363    REG_JNI(register_android_media_JetPlayer),
1364    REG_JNI(register_android_media_RemoteDisplay),
1365    REG_JNI(register_android_media_ToneGenerator),
1366
1367    REG_JNI(register_android_opengl_classes),
1368    REG_JNI(register_android_server_NetworkManagementSocketTagger),
1369    REG_JNI(register_android_ddm_DdmHandleNativeHeap),
1370    REG_JNI(register_android_backup_BackupDataInput),
1371    REG_JNI(register_android_backup_BackupDataOutput),
1372    REG_JNI(register_android_backup_FileBackupHelperBase),
1373    REG_JNI(register_android_backup_BackupHelperDispatcher),
1374    REG_JNI(register_android_app_backup_FullBackup),
1375    REG_JNI(register_android_app_ActivityThread),
1376    REG_JNI(register_android_app_NativeActivity),
1377    REG_JNI(register_android_util_jar_StrictJarFile),
1378    REG_JNI(register_android_view_InputChannel),
1379    REG_JNI(register_android_view_InputEventReceiver),
1380    REG_JNI(register_android_view_InputEventSender),
1381    REG_JNI(register_android_view_InputQueue),
1382    REG_JNI(register_android_view_KeyEvent),
1383    REG_JNI(register_android_view_MotionEvent),
1384    REG_JNI(register_android_view_PointerIcon),
1385    REG_JNI(register_android_view_VelocityTracker),
1386
1387    REG_JNI(register_android_content_res_ObbScanner),
1388    REG_JNI(register_android_content_res_Configuration),
1389
1390    REG_JNI(register_android_animation_PropertyValuesHolder),
1391    REG_JNI(register_com_android_internal_content_NativeLibraryHelper),
1392    REG_JNI(register_com_android_internal_net_NetworkStatsFactory),
1393    REG_JNI(register_android_os_HardwarePropertiesManager),
1394
1395};
1396
1397/*
1398 * Register android native functions with the VM.
1399 */
1400/*static*/ int AndroidRuntime::startReg(JNIEnv* env)
1401{
1402    ATRACE_NAME("RegisterAndroidNatives");
1403    /*
1404     * This hook causes all future threads created in this process to be
1405     * attached to the JavaVM.  (This needs to go away in favor of JNI
1406     * Attach calls.)
1407     */
1408    androidSetCreateThreadFunc((android_create_thread_fn) javaCreateThreadEtc);
1409
1410    ALOGV("--- registering native functions ---\n");
1411
1412    /*
1413     * Every "register" function calls one or more things that return
1414     * a local reference (e.g. FindClass).  Because we haven't really
1415     * started the VM yet, they're all getting stored in the base frame
1416     * and never released.  Use Push/Pop to manage the storage.
1417     */
1418    env->PushLocalFrame(200);
1419
1420    if (register_jni_procs(gRegJNI, NELEM(gRegJNI), env) < 0) {
1421        env->PopLocalFrame(NULL);
1422        return -1;
1423    }
1424    env->PopLocalFrame(NULL);
1425
1426    //createJavaThread("fubar", quickTest, (void*) "hello");
1427
1428    return 0;
1429}
1430
1431AndroidRuntime* AndroidRuntime::getRuntime()
1432{
1433    return gCurRuntime;
1434}
1435
1436/**
1437 * Used by surface flinger's DdmConnection to register native methods from
1438 * the framework.
1439 */
1440extern "C" jint registerFrameworkNatives(JNIEnv* env) {
1441    return register_jni_procs(gRegJNI, NELEM(gRegJNI), env);
1442}
1443}   // namespace android
1444