AndroidRuntime.cpp revision c3ad975aa20e25507d157f2ddb7326b947aa87b9 
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 1
20
21#include <android_runtime/AndroidRuntime.h>
22
23#include <android-base/properties.h>
24#include <binder/IBinder.h>
25#include <binder/IPCThreadState.h>
26#include <binder/IServiceManager.h>
27#include <utils/Log.h>
28#include <utils/misc.h>
29#include <utils/Trace.h>
30#include <binder/Parcel.h>
31#include <utils/threads.h>
32#include <cutils/properties.h>
33
34#include <SkGraphics.h>
35
36#include "jni.h"
37#include <nativehelper/JNIHelp.h>
38#include <nativehelper/JniInvocation.h>
39#include "android_util_Binder.h"
40
41#include <stdio.h>
42#include <signal.h>
43#include <sys/stat.h>
44#include <sys/types.h>
45#include <signal.h>
46#include <dirent.h>
47#include <assert.h>
48
49#include <string>
50#include <vector>
51
52using namespace android;
53using android::base::GetProperty;
54
55extern int register_android_os_Binder(JNIEnv* env);
56extern int register_android_os_Process(JNIEnv* env);
57extern int register_android_graphics_Bitmap(JNIEnv*);
58extern int register_android_graphics_BitmapFactory(JNIEnv*);
59extern int register_android_graphics_BitmapRegionDecoder(JNIEnv*);
60extern int register_android_graphics_ByteBufferStreamAdaptor(JNIEnv* env);
61extern int register_android_graphics_Camera(JNIEnv* env);
62extern int register_android_graphics_CreateJavaOutputStreamAdaptor(JNIEnv* env);
63extern int register_android_graphics_GraphicBuffer(JNIEnv* env);
64extern int register_android_graphics_Graphics(JNIEnv* env);
65extern int register_android_graphics_ImageDecoder(JNIEnv*);
66extern int register_android_graphics_drawable_AnimatedImageDrawable(JNIEnv*);
67extern int register_android_graphics_Interpolator(JNIEnv* env);
68extern int register_android_graphics_MaskFilter(JNIEnv* env);
69extern int register_android_graphics_Movie(JNIEnv* env);
70extern int register_android_graphics_NinePatch(JNIEnv*);
71extern int register_android_graphics_PathEffect(JNIEnv* env);
72extern int register_android_graphics_Shader(JNIEnv* env);
73extern int register_android_graphics_Typeface(JNIEnv* env);
74extern int register_android_graphics_YuvImage(JNIEnv* env);
75
76extern int register_com_google_android_gles_jni_EGLImpl(JNIEnv* env);
77extern int register_com_google_android_gles_jni_GLImpl(JNIEnv* env);
78extern int register_android_opengl_jni_EGL14(JNIEnv* env);
79extern int register_android_opengl_jni_EGLExt(JNIEnv* env);
80extern int register_android_opengl_jni_GLES10(JNIEnv* env);
81extern int register_android_opengl_jni_GLES10Ext(JNIEnv* env);
82extern int register_android_opengl_jni_GLES11(JNIEnv* env);
83extern int register_android_opengl_jni_GLES11Ext(JNIEnv* env);
84extern int register_android_opengl_jni_GLES20(JNIEnv* env);
85extern int register_android_opengl_jni_GLES30(JNIEnv* env);
86extern int register_android_opengl_jni_GLES31(JNIEnv* env);
87extern int register_android_opengl_jni_GLES31Ext(JNIEnv* env);
88extern int register_android_opengl_jni_GLES32(JNIEnv* env);
89
90extern int register_android_hardware_Camera(JNIEnv *env);
91extern int register_android_hardware_camera2_CameraMetadata(JNIEnv *env);
92extern int register_android_hardware_camera2_legacy_LegacyCameraDevice(JNIEnv *env);
93extern int register_android_hardware_camera2_legacy_PerfMeasurement(JNIEnv *env);
94extern int register_android_hardware_camera2_DngCreator(JNIEnv *env);
95extern int register_android_hardware_HardwareBuffer(JNIEnv *env);
96extern int register_android_hardware_SensorManager(JNIEnv *env);
97extern int register_android_hardware_SerialPort(JNIEnv *env);
98extern int register_android_hardware_SoundTrigger(JNIEnv *env);
99extern int register_android_hardware_UsbDevice(JNIEnv *env);
100extern int register_android_hardware_UsbDeviceConnection(JNIEnv *env);
101extern int register_android_hardware_UsbRequest(JNIEnv *env);
102extern int register_android_hardware_location_ActivityRecognitionHardware(JNIEnv* env);
103
104extern int register_android_media_AudioRecord(JNIEnv *env);
105extern int register_android_media_AudioSystem(JNIEnv *env);
106extern int register_android_media_AudioTrack(JNIEnv *env);
107extern int register_android_media_JetPlayer(JNIEnv *env);
108extern int register_android_media_ToneGenerator(JNIEnv *env);
109
110namespace android {
111
112/*
113 * JNI-based registration functions.  Note these are properly contained in
114 * namespace android.
115 */
116extern int register_android_app_admin_SecurityLog(JNIEnv* env);
117extern int register_android_content_AssetManager(JNIEnv* env);
118extern int register_android_util_EventLog(JNIEnv* env);
119extern int register_android_util_StatsLog(JNIEnv* env);
120extern int register_android_util_Log(JNIEnv* env);
121extern int register_android_util_MemoryIntArray(JNIEnv* env);
122extern int register_android_util_PathParser(JNIEnv* env);
123extern int register_android_content_StringBlock(JNIEnv* env);
124extern int register_android_content_XmlBlock(JNIEnv* env);
125extern int register_android_graphics_Canvas(JNIEnv* env);
126extern int register_android_graphics_CanvasProperty(JNIEnv* env);
127extern int register_android_graphics_ColorFilter(JNIEnv* env);
128extern int register_android_graphics_DrawFilter(JNIEnv* env);
129extern int register_android_graphics_FontFamily(JNIEnv* env);
130extern int register_android_graphics_Matrix(JNIEnv* env);
131extern int register_android_graphics_Paint(JNIEnv* env);
132extern int register_android_graphics_Path(JNIEnv* env);
133extern int register_android_graphics_PathMeasure(JNIEnv* env);
134extern int register_android_graphics_Picture(JNIEnv*);
135extern int register_android_graphics_Region(JNIEnv* env);
136extern int register_android_graphics_SurfaceTexture(JNIEnv* env);
137extern int register_android_graphics_drawable_AnimatedVectorDrawable(JNIEnv* env);
138extern int register_android_graphics_drawable_VectorDrawable(JNIEnv* env);
139extern int register_android_graphics_pdf_PdfDocument(JNIEnv* env);
140extern int register_android_graphics_pdf_PdfEditor(JNIEnv* env);
141extern int register_android_graphics_pdf_PdfRenderer(JNIEnv* env);
142extern int register_android_view_DisplayEventReceiver(JNIEnv* env);
143extern int register_android_view_DisplayListCanvas(JNIEnv* env);
144extern int register_android_view_HardwareLayer(JNIEnv* env);
145extern int register_android_view_RenderNode(JNIEnv* env);
146extern int register_android_view_RenderNodeAnimator(JNIEnv* env);
147extern int register_android_view_Surface(JNIEnv* env);
148extern int register_android_view_SurfaceControl(JNIEnv* env);
149extern int register_android_view_SurfaceSession(JNIEnv* env);
150extern int register_android_view_TextureView(JNIEnv* env);
151extern int register_android_view_ThreadedRenderer(JNIEnv* env);
152extern int register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper(JNIEnv *env);
153extern int register_android_database_CursorWindow(JNIEnv* env);
154extern int register_android_database_SQLiteConnection(JNIEnv* env);
155extern int register_android_database_SQLiteGlobal(JNIEnv* env);
156extern int register_android_database_SQLiteDebug(JNIEnv* env);
157extern int register_android_nio_utils(JNIEnv* env);
158extern int register_android_os_Debug(JNIEnv* env);
159extern int register_android_os_GraphicsEnvironment(JNIEnv* env);
160extern int register_android_os_HidlSupport(JNIEnv* env);
161extern int register_android_os_HwBinder(JNIEnv *env);
162extern int register_android_os_HwBlob(JNIEnv *env);
163extern int register_android_os_HwParcel(JNIEnv *env);
164extern int register_android_os_HwRemoteBinder(JNIEnv *env);
165extern int register_android_os_MessageQueue(JNIEnv* env);
166extern int register_android_os_Parcel(JNIEnv* env);
167extern int register_android_os_SELinux(JNIEnv* env);
168extern int register_android_os_VintfObject(JNIEnv *env);
169extern int register_android_os_VintfRuntimeInfo(JNIEnv *env);
170extern int register_android_os_SystemProperties(JNIEnv *env);
171extern int register_android_os_SystemClock(JNIEnv* env);
172extern int register_android_os_Trace(JNIEnv* env);
173extern int register_android_os_FileObserver(JNIEnv *env);
174extern int register_android_os_UEventObserver(JNIEnv* env);
175extern int register_android_os_MemoryFile(JNIEnv* env);
176extern int register_android_os_SharedMemory(JNIEnv* env);
177extern int register_android_net_LocalSocketImpl(JNIEnv* env);
178extern int register_android_net_NetworkUtils(JNIEnv* env);
179extern int register_android_text_AndroidCharacter(JNIEnv *env);
180extern int register_android_text_Hyphenator(JNIEnv *env);
181extern int register_android_text_MeasuredParagraph(JNIEnv* env);
182extern int register_android_text_StaticLayout(JNIEnv *env);
183extern int register_android_opengl_classes(JNIEnv *env);
184extern int register_android_ddm_DdmHandleNativeHeap(JNIEnv *env);
185extern int register_android_server_NetworkManagementSocketTagger(JNIEnv* env);
186extern int register_android_backup_BackupDataInput(JNIEnv *env);
187extern int register_android_backup_BackupDataOutput(JNIEnv *env);
188extern int register_android_backup_FileBackupHelperBase(JNIEnv *env);
189extern int register_android_backup_BackupHelperDispatcher(JNIEnv *env);
190extern int register_android_app_backup_FullBackup(JNIEnv *env);
191extern int register_android_app_Activity(JNIEnv *env);
192extern int register_android_app_ActivityThread(JNIEnv *env);
193extern int register_android_app_NativeActivity(JNIEnv *env);
194extern int register_android_media_RemoteDisplay(JNIEnv *env);
195extern int register_android_util_jar_StrictJarFile(JNIEnv* env);
196extern int register_android_view_InputChannel(JNIEnv* env);
197extern int register_android_view_InputDevice(JNIEnv* env);
198extern int register_android_view_InputEventReceiver(JNIEnv* env);
199extern int register_android_view_InputEventSender(JNIEnv* env);
200extern int register_android_view_InputQueue(JNIEnv* env);
201extern int register_android_view_KeyCharacterMap(JNIEnv *env);
202extern int register_android_view_KeyEvent(JNIEnv* env);
203extern int register_android_view_MotionEvent(JNIEnv* env);
204extern int register_android_view_PointerIcon(JNIEnv* env);
205extern int register_android_view_VelocityTracker(JNIEnv* env);
206extern int register_android_content_res_ObbScanner(JNIEnv* env);
207extern int register_android_content_res_Configuration(JNIEnv* env);
208extern int register_android_animation_PropertyValuesHolder(JNIEnv *env);
209extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env);
210extern int register_com_android_internal_net_NetworkStatsFactory(JNIEnv *env);
211extern int register_com_android_internal_os_ClassLoaderFactory(JNIEnv* env);
212extern int register_com_android_internal_os_FuseAppLoop(JNIEnv* env);
213extern int register_com_android_internal_os_Zygote(JNIEnv *env);
214extern int register_com_android_internal_os_ZygoteInit(JNIEnv *env);
215extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env);
216
217static AndroidRuntime* gCurRuntime = NULL;
218
219/*
220 * Code written in the Java Programming Language calls here from main().
221 */
222static void com_android_internal_os_RuntimeInit_nativeFinishInit(JNIEnv* env, jobject clazz)
223{
224    gCurRuntime->onStarted();
225}
226
227static void com_android_internal_os_ZygoteInit_nativeZygoteInit(JNIEnv* env, jobject clazz)
228{
229    gCurRuntime->onZygoteInit();
230}
231
232static void com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup(JNIEnv* env,
233        jobject clazz, jboolean exitWithoutCleanup)
234{
235    gCurRuntime->setExitWithoutCleanup(exitWithoutCleanup);
236}
237
238/*
239 * JNI registration.
240 */
241
242int register_com_android_internal_os_RuntimeInit(JNIEnv* env)
243{
244    const JNINativeMethod methods[] = {
245        { "nativeFinishInit", "()V",
246            (void*) com_android_internal_os_RuntimeInit_nativeFinishInit },
247        { "nativeSetExitWithoutCleanup", "(Z)V",
248            (void*) com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup },
249    };
250    return jniRegisterNativeMethods(env, "com/android/internal/os/RuntimeInit",
251        methods, NELEM(methods));
252}
253
254int register_com_android_internal_os_ZygoteInit_nativeZygoteInit(JNIEnv* env)
255{
256    const JNINativeMethod methods[] = {
257        { "nativeZygoteInit", "()V",
258            (void*) com_android_internal_os_ZygoteInit_nativeZygoteInit },
259    };
260    return jniRegisterNativeMethods(env, "com/android/internal/os/ZygoteInit",
261        methods, NELEM(methods));
262}
263
264// ----------------------------------------------------------------------
265
266/*static*/ JavaVM* AndroidRuntime::mJavaVM = NULL;
267
268AndroidRuntime::AndroidRuntime(char* argBlockStart, const size_t argBlockLength) :
269        mExitWithoutCleanup(false),
270        mArgBlockStart(argBlockStart),
271        mArgBlockLength(argBlockLength)
272{
273    SkGraphics::Init();
274
275    // Pre-allocate enough space to hold a fair number of options.
276    mOptions.setCapacity(20);
277
278    assert(gCurRuntime == NULL);        // one per process
279    gCurRuntime = this;
280}
281
282AndroidRuntime::~AndroidRuntime()
283{
284}
285
286/*
287 * Register native methods using JNI.
288 */
289/*static*/ int AndroidRuntime::registerNativeMethods(JNIEnv* env,
290    const char* className, const JNINativeMethod* gMethods, int numMethods)
291{
292    return jniRegisterNativeMethods(env, className, gMethods, numMethods);
293}
294
295void AndroidRuntime::setArgv0(const char* argv0, bool setProcName) {
296    if (setProcName) {
297        int len = strlen(argv0);
298        if (len < 15) {
299            pthread_setname_np(pthread_self(), argv0);
300        } else {
301            pthread_setname_np(pthread_self(), argv0 + len - 15);
302        }
303    }
304    memset(mArgBlockStart, 0, mArgBlockLength);
305    strlcpy(mArgBlockStart, argv0, mArgBlockLength);
306}
307
308status_t AndroidRuntime::callMain(const String8& className, jclass clazz,
309    const Vector<String8>& args)
310{
311    JNIEnv* env;
312    jmethodID methodId;
313
314    ALOGD("Calling main entry %s", className.string());
315
316    env = getJNIEnv();
317    if (clazz == NULL || env == NULL) {
318        return UNKNOWN_ERROR;
319    }
320
321    methodId = env->GetStaticMethodID(clazz, "main", "([Ljava/lang/String;)V");
322    if (methodId == NULL) {
323        ALOGE("ERROR: could not find method %s.main(String[])\n", className.string());
324        return UNKNOWN_ERROR;
325    }
326
327    /*
328     * We want to call main() with a String array with our arguments in it.
329     * Create an array and populate it.
330     */
331    jclass stringClass;
332    jobjectArray strArray;
333
334    const size_t numArgs = args.size();
335    stringClass = env->FindClass("java/lang/String");
336    strArray = env->NewObjectArray(numArgs, stringClass, NULL);
337
338    for (size_t i = 0; i < numArgs; i++) {
339        jstring argStr = env->NewStringUTF(args[i].string());
340        env->SetObjectArrayElement(strArray, i, argStr);
341    }
342
343    env->CallStaticVoidMethod(clazz, methodId, strArray);
344    return NO_ERROR;
345}
346
347/*
348 * The VM calls this through the "exit" hook.
349 */
350static void runtime_exit(int code)
351{
352    gCurRuntime->exit(code);
353}
354
355/*
356 * The VM calls this through the "vfprintf" hook.
357 *
358 * We ignore "fp" and just write the results to the log file.
359 */
360static void runtime_vfprintf(FILE* fp, const char* format, va_list ap)
361{
362    LOG_PRI_VA(ANDROID_LOG_INFO, "vm-printf", format, ap);
363}
364
365/**
366 * The VM calls this when mutex contention debugging is enabled to
367 * determine whether or not the blocked thread was a "sensitive thread"
368 * for user responsiveness/smoothess.
369 *
370 * Our policy for this is whether or not we're tracing any StrictMode
371 * events on this thread (which we might've inherited via Binder calls
372 * into us)
373 */
374static bool runtime_isSensitiveThread() {
375    IPCThreadState* state = IPCThreadState::selfOrNull();
376    return state && state->getStrictModePolicy() != 0;
377}
378
379static int hasDir(const char* dir)
380{
381    struct stat s;
382    int res = stat(dir, &s);
383    if (res == 0) {
384        return S_ISDIR(s.st_mode);
385    }
386    return 0;
387}
388
389static bool hasFile(const char* file) {
390    struct stat s;
391    int res = stat(file, &s);
392    if (res == 0) {
393        return S_ISREG(s.st_mode);
394    }
395    return false;
396}
397
398/*
399 * Read the persistent locale. Inspects the following system properties
400 * (in order) and returns the first non-empty property in the list :
401 *
402 * (1) persist.sys.locale
403 * (2) persist.sys.language/country/localevar (country and localevar are
404 * inspected iff. language is non-empty.
405 * (3) ro.product.locale
406 * (4) ro.product.locale.language/region
407 *
408 * Note that we need to inspect persist.sys.language/country/localevar to
409 * preserve language settings for devices that are upgrading from Lollipop
410 * to M. The same goes for ro.product.locale.language/region as well.
411 */
412const std::string readLocale()
413{
414    const std::string locale = GetProperty("persist.sys.locale", "");
415    if (!locale.empty()) {
416        return locale;
417    }
418
419    const std::string language = GetProperty("persist.sys.language", "");
420    if (!language.empty()) {
421        const std::string country = GetProperty("persist.sys.country", "");
422        const std::string variant = GetProperty("persist.sys.localevar", "");
423
424        std::string out = language;
425        if (!country.empty()) {
426            out = out + "-" + country;
427        }
428
429        if (!variant.empty()) {
430            out = out + "-" + variant;
431        }
432
433        return out;
434    }
435
436    const std::string productLocale = GetProperty("ro.product.locale", "");
437    if (!productLocale.empty()) {
438        return productLocale;
439    }
440
441    // If persist.sys.locale and ro.product.locale are missing,
442    // construct a locale value from the individual locale components.
443    const std::string productLanguage = GetProperty("ro.product.locale.language", "en");
444    const std::string productRegion = GetProperty("ro.product.locale.region", "US");
445
446    return productLanguage + "-" + productRegion;
447}
448
449void AndroidRuntime::addOption(const char* optionString, void* extraInfo)
450{
451    JavaVMOption opt;
452    opt.optionString = optionString;
453    opt.extraInfo = extraInfo;
454    mOptions.add(opt);
455}
456
457/*
458 * Parse a property containing space-separated options that should be
459 * passed directly to the VM, e.g. "-Xmx32m -verbose:gc -Xregenmap".
460 *
461 * This will cut up "extraOptsBuf" as we chop it into individual options.
462 *
463 * If "quotingArg" is non-null, it is passed before each extra option in mOptions.
464 *
465 * Adds the strings, if any, to mOptions.
466 */
467void AndroidRuntime::parseExtraOpts(char* extraOptsBuf, const char* quotingArg)
468{
469    char* start = extraOptsBuf;
470    char* end = NULL;
471    while (*start != '\0') {
472        while (*start == ' ')                   /* skip leading whitespace */
473            start++;
474        if (*start == '\0')                     /* was trailing ws, bail */
475            break;
476
477        end = start+1;
478        while (*end != ' ' && *end != '\0')     /* find end of token */
479            end++;
480        if (*end == ' ')
481            *end++ = '\0';          /* mark end, advance to indicate more */
482
483        if (quotingArg != NULL) {
484            addOption(quotingArg);
485        }
486        addOption(start);
487        start = end;
488    }
489}
490
491/*
492 * Reads a "property" into "buffer" with a default of "defaultArg". If
493 * the property is non-empty, it is treated as a runtime option such
494 * as "-Xmx32m".
495 *
496 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
497 *
498 * If an argument is found, it is added to mOptions.
499 *
500 * If an option is found, it is added to mOptions and true is
501 * returned. Otherwise false is returned.
502 */
503bool AndroidRuntime::parseRuntimeOption(const char* property,
504                                        char* buffer,
505                                        const char* runtimeArg,
506                                        const char* defaultArg)
507{
508    strcpy(buffer, runtimeArg);
509    size_t runtimeArgLen = strlen(runtimeArg);
510    property_get(property, buffer+runtimeArgLen, defaultArg);
511    if (buffer[runtimeArgLen] == '\0') {
512        return false;
513    }
514    addOption(buffer);
515    return true;
516}
517
518/*
519 * Reads a "property" into "buffer". If the property is non-empty, it
520 * is treated as a dex2oat compiler option that should be
521 * passed as a quoted option, e.g. "-Ximage-compiler-option --compiler-filter=assume-verified".
522 *
523 * The "compilerArg" is a prefix for the option such as "--compiler-filter=".
524 *
525 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
526 *
527 * If an option is found, it is added to mOptions and true is
528 * returned. Otherwise false is returned.
529 */
530bool AndroidRuntime::parseCompilerOption(const char* property,
531                                         char* buffer,
532                                         const char* compilerArg,
533                                         const char* quotingArg)
534{
535    strcpy(buffer, compilerArg);
536    size_t compilerArgLen = strlen(compilerArg);
537    property_get(property, buffer+compilerArgLen, "");
538    if (buffer[compilerArgLen] == '\0') {
539        return false;
540    }
541    addOption(quotingArg);
542    addOption(buffer);
543    return true;
544}
545
546/*
547 * Reads a "property" into "buffer". If the property is non-empty, it
548 * is treated as a dex2oat compiler runtime option that should be
549 * passed as a quoted option, e.g. "-Ximage-compiler-option
550 * --runtime-arg -Ximage-compiler-option -Xmx32m".
551 *
552 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx".
553 *
554 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option".
555 *
556 * If an option is found, it is added to mOptions and true is
557 * returned. Otherwise false is returned.
558 */
559bool AndroidRuntime::parseCompilerRuntimeOption(const char* property,
560                                                char* buffer,
561                                                const char* runtimeArg,
562                                                const char* quotingArg)
563{
564    strcpy(buffer, runtimeArg);
565    size_t runtimeArgLen = strlen(runtimeArg);
566    property_get(property, buffer+runtimeArgLen, "");
567    if (buffer[runtimeArgLen] == '\0') {
568        return false;
569    }
570    addOption(quotingArg);
571    addOption("--runtime-arg");
572    addOption(quotingArg);
573    addOption(buffer);
574    return true;
575}
576
577/*
578 * Start the Dalvik Virtual Machine.
579 *
580 * Various arguments, most determined by system properties, are passed in.
581 * The "mOptions" vector is updated.
582 *
583 * CAUTION: when adding options in here, be careful not to put the
584 * char buffer inside a nested scope.  Adding the buffer to the
585 * options using mOptions.add() does not copy the buffer, so if the
586 * buffer goes out of scope the option may be overwritten.  It's best
587 * to put the buffer at the top of the function so that it is more
588 * unlikely that someone will surround it in a scope at a later time
589 * and thus introduce a bug.
590 *
591 * Returns 0 on success.
592 */
593int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv, bool zygote)
594{
595    JavaVMInitArgs initArgs;
596    char propBuf[PROPERTY_VALUE_MAX];
597    char stackTraceFileBuf[sizeof("-Xstacktracefile:")-1 + PROPERTY_VALUE_MAX];
598    char jniOptsBuf[sizeof("-Xjniopts:")-1 + PROPERTY_VALUE_MAX];
599    char heapstartsizeOptsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
600    char heapsizeOptsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
601    char heapgrowthlimitOptsBuf[sizeof("-XX:HeapGrowthLimit=")-1 + PROPERTY_VALUE_MAX];
602    char heapminfreeOptsBuf[sizeof("-XX:HeapMinFree=")-1 + PROPERTY_VALUE_MAX];
603    char heapmaxfreeOptsBuf[sizeof("-XX:HeapMaxFree=")-1 + PROPERTY_VALUE_MAX];
604    char usejitOptsBuf[sizeof("-Xusejit:")-1 + PROPERTY_VALUE_MAX];
605    char jitmaxsizeOptsBuf[sizeof("-Xjitmaxsize:")-1 + PROPERTY_VALUE_MAX];
606    char jitinitialsizeOptsBuf[sizeof("-Xjitinitialsize:")-1 + PROPERTY_VALUE_MAX];
607    char jitthresholdOptsBuf[sizeof("-Xjitthreshold:")-1 + PROPERTY_VALUE_MAX];
608    char useJitProfilesOptsBuf[sizeof("-Xjitsaveprofilinginfo:")-1 + PROPERTY_VALUE_MAX];
609    char jitprithreadweightOptBuf[sizeof("-Xjitprithreadweight:")-1 + PROPERTY_VALUE_MAX];
610    char jittransitionweightOptBuf[sizeof("-Xjittransitionweight:")-1 + PROPERTY_VALUE_MAX];
611    char hotstartupsamplesOptsBuf[sizeof("-Xps-hot-startup-method-samples:")-1 + PROPERTY_VALUE_MAX];
612    char madviseRandomOptsBuf[sizeof("-XX:MadviseRandomAccess:")-1 + PROPERTY_VALUE_MAX];
613    char gctypeOptsBuf[sizeof("-Xgc:")-1 + PROPERTY_VALUE_MAX];
614    char backgroundgcOptsBuf[sizeof("-XX:BackgroundGC=")-1 + PROPERTY_VALUE_MAX];
615    char heaptargetutilizationOptsBuf[sizeof("-XX:HeapTargetUtilization=")-1 + PROPERTY_VALUE_MAX];
616    char foregroundHeapGrowthMultiplierOptsBuf[
617            sizeof("-XX:ForegroundHeapGrowthMultiplier=")-1 + PROPERTY_VALUE_MAX];
618    char cachePruneBuf[sizeof("-Xzygote-max-boot-retry=")-1 + PROPERTY_VALUE_MAX];
619    char dex2oatXmsImageFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
620    char dex2oatXmxImageFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
621    char dex2oatXmsFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
622    char dex2oatXmxFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
623    char dex2oatCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
624    char dex2oatImageCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
625    char dex2oatThreadsBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
626    char dex2oatThreadsImageBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
627    char dex2oat_isa_variant_key[PROPERTY_KEY_MAX];
628    char dex2oat_isa_variant[sizeof("--instruction-set-variant=") -1 + PROPERTY_VALUE_MAX];
629    char dex2oat_isa_features_key[PROPERTY_KEY_MAX];
630    char dex2oat_isa_features[sizeof("--instruction-set-features=") -1 + PROPERTY_VALUE_MAX];
631    char dex2oatFlagsBuf[PROPERTY_VALUE_MAX];
632    char dex2oatImageFlagsBuf[PROPERTY_VALUE_MAX];
633    char extraOptsBuf[PROPERTY_VALUE_MAX];
634    char voldDecryptBuf[PROPERTY_VALUE_MAX];
635    enum {
636      kEMDefault,
637      kEMIntPortable,
638      kEMIntFast,
639      kEMJitCompiler,
640    } executionMode = kEMDefault;
641    char localeOption[sizeof("-Duser.locale=") + PROPERTY_VALUE_MAX];
642    char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:")-1 + PROPERTY_VALUE_MAX];
643    char nativeBridgeLibrary[sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX];
644    char cpuAbiListBuf[sizeof("--cpu-abilist=") + PROPERTY_VALUE_MAX];
645    char methodTraceFileBuf[sizeof("-Xmethod-trace-file:") + PROPERTY_VALUE_MAX];
646    char methodTraceFileSizeBuf[sizeof("-Xmethod-trace-file-size:") + PROPERTY_VALUE_MAX];
647    std::string fingerprintBuf;
648    char jdwpProviderBuf[sizeof("-XjdwpProvider:") - 1 + PROPERTY_VALUE_MAX];
649
650    bool checkJni = false;
651    property_get("dalvik.vm.checkjni", propBuf, "");
652    if (strcmp(propBuf, "true") == 0) {
653        checkJni = true;
654    } else if (strcmp(propBuf, "false") != 0) {
655        /* property is neither true nor false; fall back on kernel parameter */
656        property_get("ro.kernel.android.checkjni", propBuf, "");
657        if (propBuf[0] == '1') {
658            checkJni = true;
659        }
660    }
661    ALOGV("CheckJNI is %s\n", checkJni ? "ON" : "OFF");
662    if (checkJni) {
663        /* extended JNI checking */
664        addOption("-Xcheck:jni");
665
666        /* with -Xcheck:jni, this provides a JNI function call trace */
667        //addOption("-verbose:jni");
668    }
669
670    property_get("dalvik.vm.execution-mode", propBuf, "");
671    if (strcmp(propBuf, "int:portable") == 0) {
672        executionMode = kEMIntPortable;
673    } else if (strcmp(propBuf, "int:fast") == 0) {
674        executionMode = kEMIntFast;
675    } else if (strcmp(propBuf, "int:jit") == 0) {
676        executionMode = kEMJitCompiler;
677    }
678
679    // If dalvik.vm.stack-trace-dir is set, it enables the "new" stack trace
680    // dump scheme and a new file is created for each stack dump. If it isn't set,
681    // the old scheme is enabled.
682    property_get("dalvik.vm.stack-trace-dir", propBuf, "");
683    if (strlen(propBuf) > 0) {
684        addOption("-Xusetombstonedtraces");
685    } else {
686        parseRuntimeOption("dalvik.vm.stack-trace-file", stackTraceFileBuf, "-Xstacktracefile:");
687    }
688
689    strcpy(jniOptsBuf, "-Xjniopts:");
690    if (parseRuntimeOption("dalvik.vm.jniopts", jniOptsBuf, "-Xjniopts:")) {
691        ALOGI("JNI options: '%s'\n", jniOptsBuf);
692    }
693
694    /* route exit() to our handler */
695    addOption("exit", (void*) runtime_exit);
696
697    /* route fprintf() to our handler */
698    addOption("vfprintf", (void*) runtime_vfprintf);
699
700    /* register the framework-specific "is sensitive thread" hook */
701    addOption("sensitiveThread", (void*) runtime_isSensitiveThread);
702
703    /* enable verbose; standard options are { jni, gc, class } */
704    //addOption("-verbose:jni");
705    addOption("-verbose:gc");
706    //addOption("-verbose:class");
707
708    /*
709     * The default starting and maximum size of the heap.  Larger
710     * values should be specified in a product property override.
711     */
712    parseRuntimeOption("dalvik.vm.heapstartsize", heapstartsizeOptsBuf, "-Xms", "4m");
713    parseRuntimeOption("dalvik.vm.heapsize", heapsizeOptsBuf, "-Xmx", "16m");
714
715    parseRuntimeOption("dalvik.vm.heapgrowthlimit", heapgrowthlimitOptsBuf, "-XX:HeapGrowthLimit=");
716    parseRuntimeOption("dalvik.vm.heapminfree", heapminfreeOptsBuf, "-XX:HeapMinFree=");
717    parseRuntimeOption("dalvik.vm.heapmaxfree", heapmaxfreeOptsBuf, "-XX:HeapMaxFree=");
718    parseRuntimeOption("dalvik.vm.heaptargetutilization",
719                       heaptargetutilizationOptsBuf,
720                       "-XX:HeapTargetUtilization=");
721
722    /* Foreground heap growth multiplier option */
723    parseRuntimeOption("dalvik.vm.foreground-heap-growth-multiplier",
724                       foregroundHeapGrowthMultiplierOptsBuf,
725                       "-XX:ForegroundHeapGrowthMultiplier=");
726
727    /*
728     * JIT related options.
729     */
730    parseRuntimeOption("dalvik.vm.usejit", usejitOptsBuf, "-Xusejit:");
731    parseRuntimeOption("dalvik.vm.jitmaxsize", jitmaxsizeOptsBuf, "-Xjitmaxsize:");
732    parseRuntimeOption("dalvik.vm.jitinitialsize", jitinitialsizeOptsBuf, "-Xjitinitialsize:");
733    parseRuntimeOption("dalvik.vm.jitthreshold", jitthresholdOptsBuf, "-Xjitthreshold:");
734    property_get("dalvik.vm.usejitprofiles", useJitProfilesOptsBuf, "");
735    if (strcmp(useJitProfilesOptsBuf, "true") == 0) {
736        addOption("-Xjitsaveprofilinginfo");
737    }
738
739    parseRuntimeOption("dalvik.vm.jitprithreadweight",
740                       jitprithreadweightOptBuf,
741                       "-Xjitprithreadweight:");
742
743    parseRuntimeOption("dalvik.vm.jittransitionweight",
744                       jittransitionweightOptBuf,
745                       "-Xjittransitionweight:");
746
747    /*
748     * Madvise related options.
749     */
750    parseRuntimeOption("dalvik.vm.madvise-random", madviseRandomOptsBuf, "-XX:MadviseRandomAccess:");
751
752    /*
753     * Profile related options.
754     */
755    parseRuntimeOption("dalvik.vm.hot-startup-method-samples", hotstartupsamplesOptsBuf,
756            "-Xps-hot-startup-method-samples:");
757
758    property_get("ro.config.low_ram", propBuf, "");
759    if (strcmp(propBuf, "true") == 0) {
760      addOption("-XX:LowMemoryMode");
761    }
762
763    parseRuntimeOption("dalvik.vm.gctype", gctypeOptsBuf, "-Xgc:");
764    parseRuntimeOption("dalvik.vm.backgroundgctype", backgroundgcOptsBuf, "-XX:BackgroundGC=");
765
766    /*
767     * Enable debugging only for apps forked from zygote.
768     */
769    if (zygote) {
770      // Set the JDWP provider and required arguments. By default let the runtime choose how JDWP is
771      // implemented. When this is not set the runtime defaults to not allowing JDWP.
772      addOption("-XjdwpOptions:suspend=n,server=y");
773      parseRuntimeOption("dalvik.vm.jdwp-provider",
774                         jdwpProviderBuf,
775                         "-XjdwpProvider:",
776                         "default");
777    }
778
779    parseRuntimeOption("dalvik.vm.lockprof.threshold",
780                       lockProfThresholdBuf,
781                       "-Xlockprofthreshold:");
782
783    if (executionMode == kEMIntPortable) {
784        addOption("-Xint:portable");
785    } else if (executionMode == kEMIntFast) {
786        addOption("-Xint:fast");
787    } else if (executionMode == kEMJitCompiler) {
788        addOption("-Xint:jit");
789    }
790
791    // If we are booting without the real /data, don't spend time compiling.
792    property_get("vold.decrypt", voldDecryptBuf, "");
793    bool skip_compilation = ((strcmp(voldDecryptBuf, "trigger_restart_min_framework") == 0) ||
794                             (strcmp(voldDecryptBuf, "1") == 0));
795
796    // Extra options for boot.art/boot.oat image generation.
797    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xms", dex2oatXmsImageFlagsBuf,
798                               "-Xms", "-Ximage-compiler-option");
799    parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xmx", dex2oatXmxImageFlagsBuf,
800                               "-Xmx", "-Ximage-compiler-option");
801    if (skip_compilation) {
802        addOption("-Ximage-compiler-option");
803        addOption("--compiler-filter=assume-verified");
804    } else {
805        parseCompilerOption("dalvik.vm.image-dex2oat-filter", dex2oatImageCompilerFilterBuf,
806                            "--compiler-filter=", "-Ximage-compiler-option");
807    }
808
809    // If there is a boot profile, it takes precedence over the image and preloaded classes.
810    if (hasFile("/system/etc/boot-image.prof")) {
811        addOption("-Ximage-compiler-option");
812        addOption("--profile-file=/system/etc/boot-image.prof");
813        addOption("-Ximage-compiler-option");
814        addOption("--compiler-filter=speed-profile");
815    } else {
816        // Make sure there is a preloaded-classes file.
817        if (!hasFile("/system/etc/preloaded-classes")) {
818            ALOGE("Missing preloaded-classes file, /system/etc/preloaded-classes not found: %s\n",
819                  strerror(errno));
820            return -1;
821        }
822        addOption("-Ximage-compiler-option");
823        addOption("--image-classes=/system/etc/preloaded-classes");
824
825        // If there is a compiled-classes file, push it.
826        if (hasFile("/system/etc/compiled-classes")) {
827            addOption("-Ximage-compiler-option");
828            addOption("--compiled-classes=/system/etc/compiled-classes");
829        }
830
831        // If there is a dirty-image-objects file, push it.
832        if (hasFile("/system/etc/dirty-image-objects")) {
833            addOption("-Ximage-compiler-option");
834            addOption("--dirty-image-objects=/system/etc/dirty-image-objects");
835        }
836    }
837
838    property_get("dalvik.vm.image-dex2oat-flags", dex2oatImageFlagsBuf, "");
839    parseExtraOpts(dex2oatImageFlagsBuf, "-Ximage-compiler-option");
840
841    // Extra options for DexClassLoader.
842    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xms", dex2oatXmsFlagsBuf,
843                               "-Xms", "-Xcompiler-option");
844    parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xmx", dex2oatXmxFlagsBuf,
845                               "-Xmx", "-Xcompiler-option");
846    if (skip_compilation) {
847        addOption("-Xcompiler-option");
848        addOption("--compiler-filter=assume-verified");
849
850        // We skip compilation when a minimal runtime is brought up for decryption. In that case
851        // /data is temporarily backed by a tmpfs, which is usually small.
852        // If the system image contains prebuilts, they will be relocated into the tmpfs. In this
853        // specific situation it is acceptable to *not* relocate and run out of the prebuilts
854        // directly instead.
855        addOption("--runtime-arg");
856        addOption("-Xnorelocate");
857    } else {
858        parseCompilerOption("dalvik.vm.dex2oat-filter", dex2oatCompilerFilterBuf,
859                            "--compiler-filter=", "-Xcompiler-option");
860    }
861    parseCompilerOption("dalvik.vm.dex2oat-threads", dex2oatThreadsBuf, "-j", "-Xcompiler-option");
862    parseCompilerOption("dalvik.vm.image-dex2oat-threads", dex2oatThreadsImageBuf, "-j",
863                        "-Ximage-compiler-option");
864
865    // The runtime will compile a boot image, when necessary, not using installd. Thus, we need to
866    // pass the instruction-set-features/variant as an image-compiler-option.
867    // TODO: Find a better way for the instruction-set.
868#if defined(__arm__)
869    constexpr const char* instruction_set = "arm";
870#elif defined(__aarch64__)
871    constexpr const char* instruction_set = "arm64";
872#elif defined(__mips__) && !defined(__LP64__)
873    constexpr const char* instruction_set = "mips";
874#elif defined(__mips__) && defined(__LP64__)
875    constexpr const char* instruction_set = "mips64";
876#elif defined(__i386__)
877    constexpr const char* instruction_set = "x86";
878#elif defined(__x86_64__)
879    constexpr const char* instruction_set = "x86_64";
880#else
881    constexpr const char* instruction_set = "unknown";
882#endif
883    // Note: it is OK to reuse the buffer, as the values are exactly the same between
884    //       * compiler-option, used for runtime compilation (DexClassLoader)
885    //       * image-compiler-option, used for boot-image compilation on device
886
887    // Copy the variant.
888    sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set);
889    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
890                        "--instruction-set-variant=", "-Ximage-compiler-option");
891    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
892                        "--instruction-set-variant=", "-Xcompiler-option");
893    // Copy the features.
894    sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set);
895    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
896                        "--instruction-set-features=", "-Ximage-compiler-option");
897    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
898                        "--instruction-set-features=", "-Xcompiler-option");
899
900
901    property_get("dalvik.vm.dex2oat-flags", dex2oatFlagsBuf, "");
902    parseExtraOpts(dex2oatFlagsBuf, "-Xcompiler-option");
903
904    /* extra options; parse this late so it overrides others */
905    property_get("dalvik.vm.extra-opts", extraOptsBuf, "");
906    parseExtraOpts(extraOptsBuf, NULL);
907
908    /* Set the properties for locale */
909    {
910        strcpy(localeOption, "-Duser.locale=");
911        const std::string locale = readLocale();
912        strncat(localeOption, locale.c_str(), PROPERTY_VALUE_MAX);
913        addOption(localeOption);
914    }
915
916    // Trace files are stored in /data/misc/trace which is writable only in debug mode.
917    property_get("ro.debuggable", propBuf, "0");
918    if (strcmp(propBuf, "1") == 0) {
919        property_get("dalvik.vm.method-trace", propBuf, "false");
920        if (strcmp(propBuf, "true") == 0) {
921            addOption("-Xmethod-trace");
922            parseRuntimeOption("dalvik.vm.method-trace-file",
923                               methodTraceFileBuf,
924                               "-Xmethod-trace-file:");
925            parseRuntimeOption("dalvik.vm.method-trace-file-siz",
926                               methodTraceFileSizeBuf,
927                               "-Xmethod-trace-file-size:");
928            property_get("dalvik.vm.method-trace-stream", propBuf, "false");
929            if (strcmp(propBuf, "true") == 0) {
930                addOption("-Xmethod-trace-stream");
931            }
932        }
933    }
934
935    // Native bridge library. "0" means that native bridge is disabled.
936    property_get("ro.dalvik.vm.native.bridge", propBuf, "");
937    if (propBuf[0] == '\0') {
938        ALOGW("ro.dalvik.vm.native.bridge is not expected to be empty");
939    } else if (strcmp(propBuf, "0") != 0) {
940        snprintf(nativeBridgeLibrary, sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX,
941                 "-XX:NativeBridge=%s", propBuf);
942        addOption(nativeBridgeLibrary);
943    }
944
945#if defined(__LP64__)
946    const char* cpu_abilist_property_name = "ro.product.cpu.abilist64";
947#else
948    const char* cpu_abilist_property_name = "ro.product.cpu.abilist32";
949#endif  // defined(__LP64__)
950    property_get(cpu_abilist_property_name, propBuf, "");
951    if (propBuf[0] == '\0') {
952        ALOGE("%s is not expected to be empty", cpu_abilist_property_name);
953        return -1;
954    }
955    snprintf(cpuAbiListBuf, sizeof(cpuAbiListBuf), "--cpu-abilist=%s", propBuf);
956    addOption(cpuAbiListBuf);
957
958    // Dalvik-cache pruning counter.
959    parseRuntimeOption("dalvik.vm.zygote.max-boot-retry", cachePruneBuf,
960                       "-Xzygote-max-boot-retry=");
961
962    /*
963     * When running with debug.generate-debug-info, add --generate-debug-info to
964     * the compiler options so that the boot image, if it is compiled on device,
965     * will include native debugging information.
966     */
967    property_get("debug.generate-debug-info", propBuf, "");
968    if (strcmp(propBuf, "true") == 0) {
969        addOption("-Xcompiler-option");
970        addOption("--generate-debug-info");
971        addOption("-Ximage-compiler-option");
972        addOption("--generate-debug-info");
973    }
974
975    // The mini-debug-info makes it possible to backtrace through JIT code.
976    if (property_get_bool("dalvik.vm.minidebuginfo", 0)) {
977        addOption("-Xcompiler-option");
978        addOption("--generate-mini-debug-info");
979    }
980
981    /*
982     * Retrieve the build fingerprint and provide it to the runtime. That way, ANR dumps will
983     * contain the fingerprint and can be parsed.
984     * Fingerprints are potentially longer than PROPERTY_VALUE_MAX, so parseRuntimeOption() cannot
985     * be used here.
986     * Do not ever re-assign fingerprintBuf as its c_str() value is stored in mOptions.
987     */
988    std::string fingerprint = GetProperty("ro.build.fingerprint", "");
989    if (!fingerprint.empty()) {
990        fingerprintBuf = "-Xfingerprint:" + fingerprint;
991        addOption(fingerprintBuf.c_str());
992    }
993
994    initArgs.version = JNI_VERSION_1_4;
995    initArgs.options = mOptions.editArray();
996    initArgs.nOptions = mOptions.size();
997    initArgs.ignoreUnrecognized = JNI_FALSE;
998
999    /*
1000     * Initialize the VM.
1001     *
1002     * The JavaVM* is essentially per-process, and the JNIEnv* is per-thread.
1003     * If this call succeeds, the VM is ready, and we can start issuing
1004     * JNI calls.
1005     */
1006    if (JNI_CreateJavaVM(pJavaVM, pEnv, &initArgs) < 0) {
1007        ALOGE("JNI_CreateJavaVM failed\n");
1008        return -1;
1009    }
1010
1011    return 0;
1012}
1013
1014char* AndroidRuntime::toSlashClassName(const char* className)
1015{
1016    char* result = strdup(className);
1017    for (char* cp = result; *cp != '\0'; cp++) {
1018        if (*cp == '.') {
1019            *cp = '/';
1020        }
1021    }
1022    return result;
1023}
1024
1025/** Create a Java string from an ASCII or Latin-1 string */
1026jstring AndroidRuntime::NewStringLatin1(JNIEnv* env, const char* bytes) {
1027    if (!bytes) return NULL;
1028    int length = strlen(bytes);
1029    jchar* buffer = (jchar *)alloca(length * sizeof(jchar));
1030    if (!buffer) return NULL;
1031    jchar* chp = buffer;
1032    for (int i = 0; i < length; i++) {
1033        *chp++ = *bytes++;
1034    }
1035    return env->NewString(buffer, length);
1036}
1037
1038
1039/*
1040 * Start the Android runtime.  This involves starting the virtual machine
1041 * and calling the "static void main(String[] args)" method in the class
1042 * named by "className".
1043 *
1044 * Passes the main function two arguments, the class name and the specified
1045 * options string.
1046 */
1047void AndroidRuntime::start(const char* className, const Vector<String8>& options, bool zygote)
1048{
1049    ALOGD(">>>>>> START %s uid %d <<<<<<\n",
1050            className != NULL ? className : "(unknown)", getuid());
1051
1052    static const String8 startSystemServer("start-system-server");
1053
1054    /*
1055     * 'startSystemServer == true' means runtime is obsolete and not run from
1056     * init.rc anymore, so we print out the boot start event here.
1057     */
1058    for (size_t i = 0; i < options.size(); ++i) {
1059        if (options[i] == startSystemServer) {
1060           /* track our progress through the boot sequence */
1061           const int LOG_BOOT_PROGRESS_START = 3000;
1062           LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START,  ns2ms(systemTime(SYSTEM_TIME_MONOTONIC)));
1063        }
1064    }
1065
1066    const char* rootDir = getenv("ANDROID_ROOT");
1067    if (rootDir == NULL) {
1068        rootDir = "/system";
1069        if (!hasDir("/system")) {
1070            LOG_FATAL("No root directory specified, and /android does not exist.");
1071            return;
1072        }
1073        setenv("ANDROID_ROOT", rootDir, 1);
1074    }
1075
1076    //const char* kernelHack = getenv("LD_ASSUME_KERNEL");
1077    //ALOGD("Found LD_ASSUME_KERNEL='%s'\n", kernelHack);
1078
1079    /* start the virtual machine */
1080    JniInvocation jni_invocation;
1081    jni_invocation.Init(NULL);
1082    JNIEnv* env;
1083    if (startVm(&mJavaVM, &env, zygote) != 0) {
1084        return;
1085    }
1086    onVmCreated(env);
1087
1088    /*
1089     * Register android functions.
1090     */
1091    if (startReg(env) < 0) {
1092        ALOGE("Unable to register all android natives\n");
1093        return;
1094    }
1095
1096    /*
1097     * We want to call main() with a String array with arguments in it.
1098     * At present we have two arguments, the class name and an option string.
1099     * Create an array to hold them.
1100     */
1101    jclass stringClass;
1102    jobjectArray strArray;
1103    jstring classNameStr;
1104
1105    stringClass = env->FindClass("java/lang/String");
1106    assert(stringClass != NULL);
1107    strArray = env->NewObjectArray(options.size() + 1, stringClass, NULL);
1108    assert(strArray != NULL);
1109    classNameStr = env->NewStringUTF(className);
1110    assert(classNameStr != NULL);
1111    env->SetObjectArrayElement(strArray, 0, classNameStr);
1112
1113    for (size_t i = 0; i < options.size(); ++i) {
1114        jstring optionsStr = env->NewStringUTF(options.itemAt(i).string());
1115        assert(optionsStr != NULL);
1116        env->SetObjectArrayElement(strArray, i + 1, optionsStr);
1117    }
1118
1119    /*
1120     * Start VM.  This thread becomes the main thread of the VM, and will
1121     * not return until the VM exits.
1122     */
1123    char* slashClassName = toSlashClassName(className != NULL ? className : "");
1124    jclass startClass = env->FindClass(slashClassName);
1125    if (startClass == NULL) {
1126        ALOGE("JavaVM unable to locate class '%s'\n", slashClassName);
1127        /* keep going */
1128    } else {
1129        jmethodID startMeth = env->GetStaticMethodID(startClass, "main",
1130            "([Ljava/lang/String;)V");
1131        if (startMeth == NULL) {
1132            ALOGE("JavaVM unable to find main() in '%s'\n", className);
1133            /* keep going */
1134        } else {
1135            env->CallStaticVoidMethod(startClass, startMeth, strArray);
1136
1137#if 0
1138            if (env->ExceptionCheck())
1139                threadExitUncaughtException(env);
1140#endif
1141        }
1142    }
1143    free(slashClassName);
1144
1145    ALOGD("Shutting down VM\n");
1146    if (mJavaVM->DetachCurrentThread() != JNI_OK)
1147        ALOGW("Warning: unable to detach main thread\n");
1148    if (mJavaVM->DestroyJavaVM() != 0)
1149        ALOGW("Warning: VM did not shut down cleanly\n");
1150}
1151
1152void AndroidRuntime::exit(int code)
1153{
1154    if (mExitWithoutCleanup) {
1155        ALOGI("VM exiting with result code %d, cleanup skipped.", code);
1156        ::_exit(code);
1157    } else {
1158        ALOGI("VM exiting with result code %d.", code);
1159        onExit(code);
1160        ::exit(code);
1161    }
1162}
1163
1164void AndroidRuntime::onVmCreated(JNIEnv* env)
1165{
1166    // If AndroidRuntime had anything to do here, we'd have done it in 'start'.
1167}
1168
1169/*
1170 * Get the JNIEnv pointer for this thread.
1171 *
1172 * Returns NULL if the slot wasn't allocated or populated.
1173 */
1174/*static*/ JNIEnv* AndroidRuntime::getJNIEnv()
1175{
1176    JNIEnv* env;
1177    JavaVM* vm = AndroidRuntime::getJavaVM();
1178    assert(vm != NULL);
1179
1180    if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK)
1181        return NULL;
1182    return env;
1183}
1184
1185/*
1186 * Makes the current thread visible to the VM.
1187 *
1188 * The JNIEnv pointer returned is only valid for the current thread, and
1189 * thus must be tucked into thread-local storage.
1190 */
1191static int javaAttachThread(const char* threadName, JNIEnv** pEnv)
1192{
1193    JavaVMAttachArgs args;
1194    JavaVM* vm;
1195    jint result;
1196
1197    vm = AndroidRuntime::getJavaVM();
1198    assert(vm != NULL);
1199
1200    args.version = JNI_VERSION_1_4;
1201    args.name = (char*) threadName;
1202    args.group = NULL;
1203
1204    result = vm->AttachCurrentThread(pEnv, (void*) &args);
1205    if (result != JNI_OK)
1206        ALOGI("NOTE: attach of thread '%s' failed\n", threadName);
1207
1208    return result;
1209}
1210
1211/*
1212 * Detach the current thread from the set visible to the VM.
1213 */
1214static int javaDetachThread(void)
1215{
1216    JavaVM* vm;
1217    jint result;
1218
1219    vm = AndroidRuntime::getJavaVM();
1220    assert(vm != NULL);
1221
1222    result = vm->DetachCurrentThread();
1223    if (result != JNI_OK)
1224        ALOGE("ERROR: thread detach failed\n");
1225    return result;
1226}
1227
1228/*
1229 * When starting a native thread that will be visible from the VM, we
1230 * bounce through this to get the right attach/detach action.
1231 * Note that this function calls free(args)
1232 */
1233/*static*/ int AndroidRuntime::javaThreadShell(void* args) {
1234    void* start = ((void**)args)[0];
1235    void* userData = ((void **)args)[1];
1236    char* name = (char*) ((void **)args)[2];        // we own this storage
1237    free(args);
1238    JNIEnv* env;
1239    int result;
1240
1241    /* hook us into the VM */
1242    if (javaAttachThread(name, &env) != JNI_OK)
1243        return -1;
1244
1245    /* start the thread running */
1246    result = (*(android_thread_func_t)start)(userData);
1247
1248    /* unhook us */
1249    javaDetachThread();
1250    free(name);
1251
1252    return result;
1253}
1254
1255/*
1256 * This is invoked from androidCreateThreadEtc() via the callback
1257 * set with androidSetCreateThreadFunc().
1258 *
1259 * We need to create the new thread in such a way that it gets hooked
1260 * into the VM before it really starts executing.
1261 */
1262/*static*/ int AndroidRuntime::javaCreateThreadEtc(
1263                                android_thread_func_t entryFunction,
1264                                void* userData,
1265                                const char* threadName,
1266                                int32_t threadPriority,
1267                                size_t threadStackSize,
1268                                android_thread_id_t* threadId)
1269{
1270    void** args = (void**) malloc(3 * sizeof(void*));   // javaThreadShell must free
1271    int result;
1272
1273    LOG_ALWAYS_FATAL_IF(threadName == nullptr, "threadName not provided to javaCreateThreadEtc");
1274
1275    args[0] = (void*) entryFunction;
1276    args[1] = userData;
1277    args[2] = (void*) strdup(threadName);   // javaThreadShell must free
1278
1279    result = androidCreateRawThreadEtc(AndroidRuntime::javaThreadShell, args,
1280        threadName, threadPriority, threadStackSize, threadId);
1281    return result;
1282}
1283
1284/*
1285 * Create a thread that is visible from the VM.
1286 *
1287 * This is called from elsewhere in the library.
1288 */
1289/*static*/ android_thread_id_t AndroidRuntime::createJavaThread(const char* name,
1290    void (*start)(void *), void* arg)
1291{
1292    android_thread_id_t threadId = 0;
1293    javaCreateThreadEtc((android_thread_func_t) start, arg, name,
1294        ANDROID_PRIORITY_DEFAULT, 0, &threadId);
1295    return threadId;
1296}
1297
1298#if 0
1299static void quickTest(void* arg)
1300{
1301    const char* str = (const char*) arg;
1302
1303    printf("In quickTest: %s\n", str);
1304}
1305#endif
1306
1307#ifdef NDEBUG
1308    #define REG_JNI(name)      { name }
1309    struct RegJNIRec {
1310        int (*mProc)(JNIEnv*);
1311    };
1312#else
1313    #define REG_JNI(name)      { name, #name }
1314    struct RegJNIRec {
1315        int (*mProc)(JNIEnv*);
1316        const char* mName;
1317    };
1318#endif
1319
1320typedef void (*RegJAMProc)();
1321
1322static int register_jni_procs(const RegJNIRec array[], size_t count, JNIEnv* env)
1323{
1324    for (size_t i = 0; i < count; i++) {
1325        if (array[i].mProc(env) < 0) {
1326#ifndef NDEBUG
1327            ALOGD("----------!!! %s failed to load\n", array[i].mName);
1328#endif
1329            return -1;
1330        }
1331    }
1332    return 0;
1333}
1334
1335static const RegJNIRec gRegJNI[] = {
1336    REG_JNI(register_com_android_internal_os_RuntimeInit),
1337    REG_JNI(register_com_android_internal_os_ZygoteInit_nativeZygoteInit),
1338    REG_JNI(register_android_os_SystemClock),
1339    REG_JNI(register_android_util_EventLog),
1340    REG_JNI(register_android_util_Log),
1341    REG_JNI(register_android_util_MemoryIntArray),
1342    REG_JNI(register_android_util_PathParser),
1343    REG_JNI(register_android_util_StatsLog),
1344    REG_JNI(register_android_app_admin_SecurityLog),
1345    REG_JNI(register_android_content_AssetManager),
1346    REG_JNI(register_android_content_StringBlock),
1347    REG_JNI(register_android_content_XmlBlock),
1348    REG_JNI(register_android_text_AndroidCharacter),
1349    REG_JNI(register_android_text_Hyphenator),
1350    REG_JNI(register_android_text_MeasuredParagraph),
1351    REG_JNI(register_android_text_StaticLayout),
1352    REG_JNI(register_android_view_InputDevice),
1353    REG_JNI(register_android_view_KeyCharacterMap),
1354    REG_JNI(register_android_os_Process),
1355    REG_JNI(register_android_os_SystemProperties),
1356    REG_JNI(register_android_os_Binder),
1357    REG_JNI(register_android_os_Parcel),
1358    REG_JNI(register_android_os_HidlSupport),
1359    REG_JNI(register_android_os_HwBinder),
1360    REG_JNI(register_android_os_HwBlob),
1361    REG_JNI(register_android_os_HwParcel),
1362    REG_JNI(register_android_os_HwRemoteBinder),
1363    REG_JNI(register_android_os_VintfObject),
1364    REG_JNI(register_android_os_VintfRuntimeInfo),
1365    REG_JNI(register_android_nio_utils),
1366    REG_JNI(register_android_graphics_Canvas),
1367    REG_JNI(register_android_graphics_Graphics),
1368    REG_JNI(register_android_view_DisplayEventReceiver),
1369    REG_JNI(register_android_view_RenderNode),
1370    REG_JNI(register_android_view_RenderNodeAnimator),
1371    REG_JNI(register_android_view_DisplayListCanvas),
1372    REG_JNI(register_android_view_HardwareLayer),
1373    REG_JNI(register_android_view_ThreadedRenderer),
1374    REG_JNI(register_android_view_Surface),
1375    REG_JNI(register_android_view_SurfaceControl),
1376    REG_JNI(register_android_view_SurfaceSession),
1377    REG_JNI(register_android_view_TextureView),
1378    REG_JNI(register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper),
1379    REG_JNI(register_com_google_android_gles_jni_EGLImpl),
1380    REG_JNI(register_com_google_android_gles_jni_GLImpl),
1381    REG_JNI(register_android_opengl_jni_EGL14),
1382    REG_JNI(register_android_opengl_jni_EGLExt),
1383    REG_JNI(register_android_opengl_jni_GLES10),
1384    REG_JNI(register_android_opengl_jni_GLES10Ext),
1385    REG_JNI(register_android_opengl_jni_GLES11),
1386    REG_JNI(register_android_opengl_jni_GLES11Ext),
1387    REG_JNI(register_android_opengl_jni_GLES20),
1388    REG_JNI(register_android_opengl_jni_GLES30),
1389    REG_JNI(register_android_opengl_jni_GLES31),
1390    REG_JNI(register_android_opengl_jni_GLES31Ext),
1391    REG_JNI(register_android_opengl_jni_GLES32),
1392
1393    REG_JNI(register_android_graphics_Bitmap),
1394    REG_JNI(register_android_graphics_BitmapFactory),
1395    REG_JNI(register_android_graphics_BitmapRegionDecoder),
1396    REG_JNI(register_android_graphics_ByteBufferStreamAdaptor),
1397    REG_JNI(register_android_graphics_Camera),
1398    REG_JNI(register_android_graphics_CreateJavaOutputStreamAdaptor),
1399    REG_JNI(register_android_graphics_CanvasProperty),
1400    REG_JNI(register_android_graphics_ColorFilter),
1401    REG_JNI(register_android_graphics_DrawFilter),
1402    REG_JNI(register_android_graphics_FontFamily),
1403    REG_JNI(register_android_graphics_GraphicBuffer),
1404    REG_JNI(register_android_graphics_ImageDecoder),
1405    REG_JNI(register_android_graphics_drawable_AnimatedImageDrawable),
1406    REG_JNI(register_android_graphics_Interpolator),
1407    REG_JNI(register_android_graphics_MaskFilter),
1408    REG_JNI(register_android_graphics_Matrix),
1409    REG_JNI(register_android_graphics_Movie),
1410    REG_JNI(register_android_graphics_NinePatch),
1411    REG_JNI(register_android_graphics_Paint),
1412    REG_JNI(register_android_graphics_Path),
1413    REG_JNI(register_android_graphics_PathMeasure),
1414    REG_JNI(register_android_graphics_PathEffect),
1415    REG_JNI(register_android_graphics_Picture),
1416    REG_JNI(register_android_graphics_Region),
1417    REG_JNI(register_android_graphics_Shader),
1418    REG_JNI(register_android_graphics_SurfaceTexture),
1419    REG_JNI(register_android_graphics_Typeface),
1420    REG_JNI(register_android_graphics_YuvImage),
1421    REG_JNI(register_android_graphics_drawable_AnimatedVectorDrawable),
1422    REG_JNI(register_android_graphics_drawable_VectorDrawable),
1423    REG_JNI(register_android_graphics_pdf_PdfDocument),
1424    REG_JNI(register_android_graphics_pdf_PdfEditor),
1425    REG_JNI(register_android_graphics_pdf_PdfRenderer),
1426
1427    REG_JNI(register_android_database_CursorWindow),
1428    REG_JNI(register_android_database_SQLiteConnection),
1429    REG_JNI(register_android_database_SQLiteGlobal),
1430    REG_JNI(register_android_database_SQLiteDebug),
1431    REG_JNI(register_android_os_Debug),
1432    REG_JNI(register_android_os_FileObserver),
1433    REG_JNI(register_android_os_GraphicsEnvironment),
1434    REG_JNI(register_android_os_MessageQueue),
1435    REG_JNI(register_android_os_SELinux),
1436    REG_JNI(register_android_os_Trace),
1437    REG_JNI(register_android_os_UEventObserver),
1438    REG_JNI(register_android_net_LocalSocketImpl),
1439    REG_JNI(register_android_net_NetworkUtils),
1440    REG_JNI(register_android_os_MemoryFile),
1441    REG_JNI(register_android_os_SharedMemory),
1442    REG_JNI(register_com_android_internal_os_ClassLoaderFactory),
1443    REG_JNI(register_com_android_internal_os_Zygote),
1444    REG_JNI(register_com_android_internal_os_ZygoteInit),
1445    REG_JNI(register_com_android_internal_util_VirtualRefBasePtr),
1446    REG_JNI(register_android_hardware_Camera),
1447    REG_JNI(register_android_hardware_camera2_CameraMetadata),
1448    REG_JNI(register_android_hardware_camera2_legacy_LegacyCameraDevice),
1449    REG_JNI(register_android_hardware_camera2_legacy_PerfMeasurement),
1450    REG_JNI(register_android_hardware_camera2_DngCreator),
1451    REG_JNI(register_android_hardware_HardwareBuffer),
1452    REG_JNI(register_android_hardware_SensorManager),
1453    REG_JNI(register_android_hardware_SerialPort),
1454    REG_JNI(register_android_hardware_SoundTrigger),
1455    REG_JNI(register_android_hardware_UsbDevice),
1456    REG_JNI(register_android_hardware_UsbDeviceConnection),
1457    REG_JNI(register_android_hardware_UsbRequest),
1458    REG_JNI(register_android_hardware_location_ActivityRecognitionHardware),
1459    REG_JNI(register_android_media_AudioRecord),
1460    REG_JNI(register_android_media_AudioSystem),
1461    REG_JNI(register_android_media_AudioTrack),
1462    REG_JNI(register_android_media_JetPlayer),
1463    REG_JNI(register_android_media_RemoteDisplay),
1464    REG_JNI(register_android_media_ToneGenerator),
1465
1466    REG_JNI(register_android_opengl_classes),
1467    REG_JNI(register_android_server_NetworkManagementSocketTagger),
1468    REG_JNI(register_android_ddm_DdmHandleNativeHeap),
1469    REG_JNI(register_android_backup_BackupDataInput),
1470    REG_JNI(register_android_backup_BackupDataOutput),
1471    REG_JNI(register_android_backup_FileBackupHelperBase),
1472    REG_JNI(register_android_backup_BackupHelperDispatcher),
1473    REG_JNI(register_android_app_backup_FullBackup),
1474    REG_JNI(register_android_app_Activity),
1475    REG_JNI(register_android_app_ActivityThread),
1476    REG_JNI(register_android_app_NativeActivity),
1477    REG_JNI(register_android_util_jar_StrictJarFile),
1478    REG_JNI(register_android_view_InputChannel),
1479    REG_JNI(register_android_view_InputEventReceiver),
1480    REG_JNI(register_android_view_InputEventSender),
1481    REG_JNI(register_android_view_InputQueue),
1482    REG_JNI(register_android_view_KeyEvent),
1483    REG_JNI(register_android_view_MotionEvent),
1484    REG_JNI(register_android_view_PointerIcon),
1485    REG_JNI(register_android_view_VelocityTracker),
1486
1487    REG_JNI(register_android_content_res_ObbScanner),
1488    REG_JNI(register_android_content_res_Configuration),
1489
1490    REG_JNI(register_android_animation_PropertyValuesHolder),
1491    REG_JNI(register_com_android_internal_content_NativeLibraryHelper),
1492    REG_JNI(register_com_android_internal_net_NetworkStatsFactory),
1493    REG_JNI(register_com_android_internal_os_FuseAppLoop),
1494};
1495
1496/*
1497 * Register android native functions with the VM.
1498 */
1499/*static*/ int AndroidRuntime::startReg(JNIEnv* env)
1500{
1501    ATRACE_NAME("RegisterAndroidNatives");
1502    /*
1503     * This hook causes all future threads created in this process to be
1504     * attached to the JavaVM.  (This needs to go away in favor of JNI
1505     * Attach calls.)
1506     */
1507    androidSetCreateThreadFunc((android_create_thread_fn) javaCreateThreadEtc);
1508
1509    ALOGV("--- registering native functions ---\n");
1510
1511    /*
1512     * Every "register" function calls one or more things that return
1513     * a local reference (e.g. FindClass).  Because we haven't really
1514     * started the VM yet, they're all getting stored in the base frame
1515     * and never released.  Use Push/Pop to manage the storage.
1516     */
1517    env->PushLocalFrame(200);
1518
1519    if (register_jni_procs(gRegJNI, NELEM(gRegJNI), env) < 0) {
1520        env->PopLocalFrame(NULL);
1521        return -1;
1522    }
1523    env->PopLocalFrame(NULL);
1524
1525    //createJavaThread("fubar", quickTest, (void*) "hello");
1526
1527    return 0;
1528}
1529
1530AndroidRuntime* AndroidRuntime::getRuntime()
1531{
1532    return gCurRuntime;
1533}
1534
1535/**
1536 * Used by surface flinger's DdmConnection to register native methods from
1537 * the framework.
1538 */
1539extern "C" jint registerFrameworkNatives(JNIEnv* env) {
1540    return register_jni_procs(gRegJNI, NELEM(gRegJNI), env);
1541}
1542}   // namespace android
1543