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android_frameworks_base/core/jni/AndroidRuntime.cpp
Jeff Brown e5360fbf3e Rewrite SQLite database wrappers. 
The main theme of this change is encapsulation.  This change
preserves all existing functionality but the implementation
is now much cleaner.

Instead of a "database lock", access to the database is treated
as a resource acquisition problem.  If a thread's owns a database
connection, then it can access the database; otherwise, it must
acquire a database connection first, and potentially wait for other
threads to give up theirs.  The SQLiteConnectionPool encapsulates
the details of how connections are created, configured, acquired,
released and disposed.

One new feature is that SQLiteConnectionPool can make scheduling
decisions about which thread should next acquire a database
connection when there is contention among threads.  The factors
considered include wait queue ordering (fairness among peers),
whether the connection is needed for an interactive operation
(unfairness on behalf of the UI), and whether the primary connection
is needed or if any old connection will do.  Thus one goal of the
new SQLiteConnectionPool is to improve the utilization of
database connections.

To emulate some quirks of the old "database lock," we introduce
the concept of the primary database connection.  The primary
database connection is the one that is typically used to perform
write operations to the database.  When a thread holds the primary
database connection, it effectively prevents other threads from
modifying the database (although they can still read).  What's
more, those threads will block when they try to acquire the primary
connection, which provides the same kind of mutual exclusion
features that the old "database lock" had.  (In truth, we
probably don't need to be requiring use of the primary database
connection in as many places as we do now, but we can seek to refine
that behavior in future patches.)

Another significant change is that native sqlite3_stmt objects
(prepared statements) are fully encapsulated by the SQLiteConnection
object that owns them.  This ensures that the connection can
finalize (destroy) all extant statements that belong to a database
connection when the connection is closed.  (In the original code,
this was very complicated because the sqlite3_stmt objects were
managed by SQLiteCompiledSql objects which had different lifetime
from the original SQLiteDatabase that created them.  Worse, the
SQLiteCompiledSql finalizer method couldn't actually destroy the
sqlite3_stmt objects because it ran on the finalizer thread and
therefore could not guarantee that it could acquire the database
lock in order to do the work.  This resulted in some rather
tortured logic involving a list of pending finalizable statements
and a high change of deadlocks or leaks.)

Because sqlite3_stmt objects never escape the confines of the
SQLiteConnection that owns them, we can also greatly simplify
the design of the SQLiteProgram, SQLiteQuery and SQLiteStatement
objects.  They no longer have to wrangle a native sqlite3_stmt
object pointer and manage its lifecycle.  So now all they do
is hold bind arguments and provide a fancy API.

All of the JNI glue related to managing database connections
and performing transactions is now bound to SQLiteConnection
(rather than being scattered everywhere).  This makes sense because
SQLiteConnection owns the native sqlite3 object, so it is the
only class in the system that can interact with the native
SQLite database directly.  Encapsulation for the win.

One particularly tricky part of this change is managing the
ownership of SQLiteConnection objects.  At any given time,
a SQLiteConnection is either owned by a SQLiteConnectionPool
or by a SQLiteSession.  SQLiteConnections should never be leaked,
but we handle that case too (and yell about it with CloseGuard).

A SQLiteSession object is responsible for acquiring and releasing
a SQLiteConnection object on behalf of a single thread as needed.
For example, the session acquires a connection when a transaction
begins and releases it when finished.  If the session cannot
acquire a connection immediately, then the requested operation
blocks until a connection becomes available.

SQLiteSessions are thread-local.  A SQLiteDatabase assigns a
distinct session to each thread that performs database operations.
This is very very important.  First, it prevents two threads
from trying to use the same SQLiteConnection at the same time
(because two threads can't share the same session).
Second, it prevents a single thread from trying to acquire two
SQLiteConnections simultaneously from the same database (because
a single thread can't have two sessions for the same database which,
in addition to being greedy, could result in a deadlock).

There is strict layering between the various database objects,
objects at lower layers are not aware of objects at higher layers.
Moreover, objects at higher layers generally own objects at lower
layers and are responsible for ensuring they are properly disposed
when no longer needed (good for the environment).

API layer: SQLiteDatabase, SQLiteProgram, SQLiteQuery, SQLiteStatement.
Session layer: SQLiteSession.
Connection layer: SQLiteConnectionPool, SQLiteConnection.
Native layer: JNI glue.

By avoiding cyclic dependencies between layers, we make the
architecture much more intelligible, maintainable and robust.

Finally, this change adds a great deal of new debugging information.
It is now possible to view a list of the most recent database
operations including how long they took to run using
"adb shell dumpsys dbinfo".  (Because most of the interesting
work happens in SQLiteConnection, it is easy to add debugging
instrumentation to track all database operations in one place.)

Change-Id: Iffb4ce72d8bcf20b4e087d911da6aa84d2f15297
2012-01-12 14:56:18 -08:00

1256 lines
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/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "AndroidRuntime"
//#define LOG_NDEBUG 0
#include <android_runtime/AndroidRuntime.h>
#include <binder/IBinder.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <utils/Log.h>
#include <utils/misc.h>
#include <binder/Parcel.h>
#include <utils/StringArray.h>
#include <utils/threads.h>
#include <cutils/properties.h>
#include <SkGraphics.h>
#include <SkImageDecoder.h>
#include <SkImageRef_GlobalPool.h>
#include "jni.h"
#include "JNIHelp.h"
#include "android_util_Binder.h"
#include <stdio.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <signal.h>
#include <dirent.h>
#include <assert.h>
using namespace android;
extern void register_BindTest();
extern int register_android_os_Binder(JNIEnv* env);
extern int register_android_os_Process(JNIEnv* env);
extern int register_android_graphics_Bitmap(JNIEnv*);
extern int register_android_graphics_BitmapFactory(JNIEnv*);
extern int register_android_graphics_BitmapRegionDecoder(JNIEnv*);
extern int register_android_graphics_Camera(JNIEnv* env);
extern int register_android_graphics_Graphics(JNIEnv* env);
extern int register_android_graphics_Interpolator(JNIEnv* env);
extern int register_android_graphics_LayerRasterizer(JNIEnv*);
extern int register_android_graphics_MaskFilter(JNIEnv* env);
extern int register_android_graphics_Movie(JNIEnv* env);
extern int register_android_graphics_NinePatch(JNIEnv*);
extern int register_android_graphics_PathEffect(JNIEnv* env);
extern int register_android_graphics_Shader(JNIEnv* env);
extern int register_android_graphics_Typeface(JNIEnv* env);
extern int register_android_graphics_YuvImage(JNIEnv* env);
extern int register_com_google_android_gles_jni_EGLImpl(JNIEnv* env);
extern int register_com_google_android_gles_jni_GLImpl(JNIEnv* env);
extern int register_android_opengl_jni_GLES10(JNIEnv* env);
extern int register_android_opengl_jni_GLES10Ext(JNIEnv* env);
extern int register_android_opengl_jni_GLES11(JNIEnv* env);
extern int register_android_opengl_jni_GLES11Ext(JNIEnv* env);
extern int register_android_opengl_jni_GLES20(JNIEnv* env);
extern int register_android_hardware_Camera(JNIEnv *env);
extern int register_android_hardware_SensorManager(JNIEnv *env);
extern int register_android_hardware_UsbDevice(JNIEnv *env);
extern int register_android_hardware_UsbDeviceConnection(JNIEnv *env);
extern int register_android_hardware_UsbRequest(JNIEnv *env);
extern int register_android_media_AudioRecord(JNIEnv *env);
extern int register_android_media_AudioSystem(JNIEnv *env);
extern int register_android_media_AudioTrack(JNIEnv *env);
extern int register_android_media_JetPlayer(JNIEnv *env);
extern int register_android_media_ToneGenerator(JNIEnv *env);
extern int register_android_util_FloatMath(JNIEnv* env);
namespace android {
/*
* JNI-based registration functions. Note these are properly contained in
* namespace android.
*/
extern int register_android_content_AssetManager(JNIEnv* env);
extern int register_android_util_EventLog(JNIEnv* env);
extern int register_android_util_Log(JNIEnv* env);
extern int register_android_content_StringBlock(JNIEnv* env);
extern int register_android_content_XmlBlock(JNIEnv* env);
extern int register_android_emoji_EmojiFactory(JNIEnv* env);
extern int register_android_graphics_Canvas(JNIEnv* env);
extern int register_android_graphics_ColorFilter(JNIEnv* env);
extern int register_android_graphics_DrawFilter(JNIEnv* env);
extern int register_android_graphics_Matrix(JNIEnv* env);
extern int register_android_graphics_Paint(JNIEnv* env);
extern int register_android_graphics_Path(JNIEnv* env);
extern int register_android_graphics_PathMeasure(JNIEnv* env);
extern int register_android_graphics_Picture(JNIEnv*);
extern int register_android_graphics_PorterDuff(JNIEnv* env);
extern int register_android_graphics_Rasterizer(JNIEnv* env);
extern int register_android_graphics_Region(JNIEnv* env);
extern int register_android_graphics_SurfaceTexture(JNIEnv* env);
extern int register_android_graphics_Xfermode(JNIEnv* env);
extern int register_android_graphics_PixelFormat(JNIEnv* env);
extern int register_android_view_Display(JNIEnv* env);
extern int register_android_view_DisplayEventReceiver(JNIEnv* env);
extern int register_android_view_GLES20Canvas(JNIEnv* env);
extern int register_android_view_HardwareRenderer(JNIEnv* env);
extern int register_android_view_Surface(JNIEnv* env);
extern int register_android_view_TextureView(JNIEnv* env);
extern int register_android_database_CursorWindow(JNIEnv* env);
extern int register_android_database_SQLiteConnection(JNIEnv* env);
extern int register_android_database_SQLiteGlobal(JNIEnv* env);
extern int register_android_database_SQLiteDebug(JNIEnv* env);
extern int register_android_debug_JNITest(JNIEnv* env);
extern int register_android_nio_utils(JNIEnv* env);
extern int register_android_text_format_Time(JNIEnv* env);
extern int register_android_os_Debug(JNIEnv* env);
extern int register_android_os_MessageQueue(JNIEnv* env);
extern int register_android_os_ParcelFileDescriptor(JNIEnv *env);
extern int register_android_os_Power(JNIEnv *env);
extern int register_android_os_StatFs(JNIEnv *env);
extern int register_android_os_SystemProperties(JNIEnv *env);
extern int register_android_os_SystemClock(JNIEnv* env);
extern int register_android_os_FileObserver(JNIEnv *env);
extern int register_android_os_FileUtils(JNIEnv *env);
extern int register_android_os_UEventObserver(JNIEnv* env);
extern int register_android_os_MemoryFile(JNIEnv* env);
extern int register_android_net_LocalSocketImpl(JNIEnv* env);
extern int register_android_net_NetworkUtils(JNIEnv* env);
extern int register_android_net_TrafficStats(JNIEnv* env);
extern int register_android_net_wifi_WifiManager(JNIEnv* env);
extern int register_android_text_AndroidCharacter(JNIEnv *env);
extern int register_android_text_AndroidBidi(JNIEnv *env);
extern int register_android_text_KeyCharacterMap(JNIEnv *env);
extern int register_android_opengl_classes(JNIEnv *env);
extern int register_android_bluetooth_HeadsetBase(JNIEnv* env);
extern int register_android_bluetooth_BluetoothAudioGateway(JNIEnv* env);
extern int register_android_bluetooth_BluetoothSocket(JNIEnv *env);
extern int register_android_server_BluetoothService(JNIEnv* env);
extern int register_android_server_BluetoothEventLoop(JNIEnv *env);
extern int register_android_server_BluetoothA2dpService(JNIEnv* env);
extern int register_android_server_NetworkManagementSocketTagger(JNIEnv* env);
extern int register_android_server_Watchdog(JNIEnv* env);
extern int register_android_ddm_DdmHandleNativeHeap(JNIEnv *env);
extern int register_com_android_internal_os_ZygoteInit(JNIEnv* env);
extern int register_android_backup_BackupDataInput(JNIEnv *env);
extern int register_android_backup_BackupDataOutput(JNIEnv *env);
extern int register_android_backup_FileBackupHelperBase(JNIEnv *env);
extern int register_android_backup_BackupHelperDispatcher(JNIEnv *env);
extern int register_android_app_backup_FullBackup(JNIEnv *env);
extern int register_android_app_ActivityThread(JNIEnv *env);
extern int register_android_app_NativeActivity(JNIEnv *env);
extern int register_android_view_InputChannel(JNIEnv* env);
extern int register_android_view_InputEventReceiver(JNIEnv* env);
extern int register_android_view_KeyEvent(JNIEnv* env);
extern int register_android_view_MotionEvent(JNIEnv* env);
extern int register_android_view_PointerIcon(JNIEnv* env);
extern int register_android_view_VelocityTracker(JNIEnv* env);
extern int register_android_content_res_ObbScanner(JNIEnv* env);
extern int register_android_content_res_Configuration(JNIEnv* env);
extern int register_android_animation_PropertyValuesHolder(JNIEnv *env);
extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env);
static AndroidRuntime* gCurRuntime = NULL;
static void doThrow(JNIEnv* env, const char* exc, const char* msg = NULL)
{
if (jniThrowException(env, exc, msg) != 0)
assert(false);
}
/*
* Code written in the Java Programming Language calls here from main().
*/
static void com_android_internal_os_RuntimeInit_finishInit(JNIEnv* env, jobject clazz)
{
gCurRuntime->onStarted();
}
static void com_android_internal_os_RuntimeInit_zygoteInit(JNIEnv* env, jobject clazz)
{
gCurRuntime->onZygoteInit();
}
static jint com_android_internal_os_RuntimeInit_isComputerOn(JNIEnv* env, jobject clazz)
{
return 1;
}
static void com_android_internal_os_RuntimeInit_turnComputerOn(JNIEnv* env, jobject clazz)
{
}
static jint com_android_internal_os_RuntimeInit_getQwertyKeyboard(JNIEnv* env, jobject clazz)
{
char* value = getenv("qwerty");
if (value != NULL && strcmp(value, "true") == 0) {
return 1;
}
return 0;
}
/*
* JNI registration.
*/
static JNINativeMethod gMethods[] = {
{ "finishInit", "()V",
(void*) com_android_internal_os_RuntimeInit_finishInit },
{ "zygoteInitNative", "()V",
(void*) com_android_internal_os_RuntimeInit_zygoteInit },
{ "isComputerOn", "()I",
(void*) com_android_internal_os_RuntimeInit_isComputerOn },
{ "turnComputerOn", "()V",
(void*) com_android_internal_os_RuntimeInit_turnComputerOn },
{ "getQwertyKeyboard", "()I",
(void*) com_android_internal_os_RuntimeInit_getQwertyKeyboard },
};
int register_com_android_internal_os_RuntimeInit(JNIEnv* env)
{
return jniRegisterNativeMethods(env, "com/android/internal/os/RuntimeInit",
gMethods, NELEM(gMethods));
}
// ----------------------------------------------------------------------
/*static*/ JavaVM* AndroidRuntime::mJavaVM = NULL;
AndroidRuntime::AndroidRuntime()
{
SkGraphics::Init();
// this sets our preference for 16bit images during decode
// in case the src is opaque and 24bit
SkImageDecoder::SetDeviceConfig(SkBitmap::kRGB_565_Config);
// This cache is shared between browser native images, and java "purgeable"
// bitmaps. This globalpool is for images that do not either use the java
// heap, or are not backed by ashmem. See BitmapFactory.cpp for the key
// java call site.
SkImageRef_GlobalPool::SetRAMBudget(512 * 1024);
// There is also a global font cache, but its budget is specified in code
// see SkFontHost_android.cpp
// Pre-allocate enough space to hold a fair number of options.
mOptions.setCapacity(20);
assert(gCurRuntime == NULL); // one per process
gCurRuntime = this;
}
AndroidRuntime::~AndroidRuntime()
{
SkGraphics::Term();
}
/*
* Register native methods using JNI.
*/
/*static*/ int AndroidRuntime::registerNativeMethods(JNIEnv* env,
const char* className, const JNINativeMethod* gMethods, int numMethods)
{
return jniRegisterNativeMethods(env, className, gMethods, numMethods);
}
status_t AndroidRuntime::callMain(const char* className,
jclass clazz, int argc, const char* const argv[])
{
JNIEnv* env;
jmethodID methodId;
ALOGD("Calling main entry %s", className);
env = getJNIEnv();
if (clazz == NULL || env == NULL) {
return UNKNOWN_ERROR;
}
methodId = env->GetStaticMethodID(clazz, "main", "([Ljava/lang/String;)V");
if (methodId == NULL) {
ALOGE("ERROR: could not find method %s.main(String[])\n", className);
return UNKNOWN_ERROR;
}
/*
* We want to call main() with a String array with our arguments in it.
* Create an array and populate it.
*/
jclass stringClass;
jobjectArray strArray;
stringClass = env->FindClass("java/lang/String");
strArray = env->NewObjectArray(argc, stringClass, NULL);
for (int i = 0; i < argc; i++) {
jstring argStr = env->NewStringUTF(argv[i]);
env->SetObjectArrayElement(strArray, i, argStr);
}
env->CallStaticVoidMethod(clazz, methodId, strArray);
return NO_ERROR;
}
/*
* The VM calls this through the "exit" hook.
*/
static void runtime_exit(int code)
{
gCurRuntime->onExit(code);
exit(code);
}
/*
* The VM calls this through the "vfprintf" hook.
*
* We ignore "fp" and just write the results to the log file.
*/
static void runtime_vfprintf(FILE* fp, const char* format, va_list ap)
{
LOG_PRI_VA(ANDROID_LOG_INFO, "vm-printf", format, ap);
}
/**
* The VM calls this when mutex contention debugging is enabled to
* determine whether or not the blocked thread was a "sensitive thread"
* for user responsiveness/smoothess.
*
* Our policy for this is whether or not we're tracing any StrictMode
* events on this thread (which we might've inherited via Binder calls
* into us)
*/
static bool runtime_isSensitiveThread() {
IPCThreadState* state = IPCThreadState::selfOrNull();
return state && state->getStrictModePolicy() != 0;
}
/**
* Add VM arguments to the to-be-executed VM
* Stops at first non '-' argument (also stops at an argument of '--')
* Returns the number of args consumed
*/
int AndroidRuntime::addVmArguments(int argc, const char* const argv[])
{
int i;
for (i = 0; i<argc; i++) {
if (argv[i][0] != '-') {
return i;
}
if (argv[i][1] == '-' && argv[i][2] == 0) {
return i+1;
}
JavaVMOption opt;
memset(&opt, 0, sizeof(opt));
opt.optionString = (char*)argv[i];
mOptions.add(opt);
}
return i;
}
static int hasDir(const char* dir)
{
struct stat s;
int res = stat(dir, &s);
if (res == 0) {
return S_ISDIR(s.st_mode);
}
return 0;
}
/*
* We just want failed write() calls to just return with an error.
*/
static void blockSigpipe()
{
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGPIPE);
if (sigprocmask(SIG_BLOCK, &mask, NULL) != 0)
ALOGW("WARNING: SIGPIPE not blocked\n");
}
/*
* Read the persistent locale.
*/
static void readLocale(char* language, char* region)
{
char propLang[PROPERTY_VALUE_MAX], propRegn[PROPERTY_VALUE_MAX];
property_get("persist.sys.language", propLang, "");
property_get("persist.sys.country", propRegn, "");
if (*propLang == 0 && *propRegn == 0) {
/* Set to ro properties, default is en_US */
property_get("ro.product.locale.language", propLang, "en");
property_get("ro.product.locale.region", propRegn, "US");
}
strncat(language, propLang, 2);
strncat(region, propRegn, 2);
//ALOGD("language=%s region=%s\n", language, region);
}
/*
* Parse a property containing space-separated options that should be
* passed directly to the VM, e.g. "-Xmx32m -verbose:gc -Xregenmap".
*
* This will cut up "extraOptsBuf" as we chop it into individual options.
*
* Adds the strings, if any, to mOptions.
*/
void AndroidRuntime::parseExtraOpts(char* extraOptsBuf)
{
JavaVMOption opt;
char* start;
char* end;
memset(&opt, 0, sizeof(opt));
start = extraOptsBuf;
while (*start != '\0') {
while (*start == ' ') /* skip leading whitespace */
start++;
if (*start == '\0') /* was trailing ws, bail */
break;
end = start+1;
while (*end != ' ' && *end != '\0') /* find end of token */
end++;
if (*end == ' ')
*end++ = '\0'; /* mark end, advance to indicate more */
opt.optionString = start;
mOptions.add(opt);
start = end;
}
}
/*
* Start the Dalvik Virtual Machine.
*
* Various arguments, most determined by system properties, are passed in.
* The "mOptions" vector is updated.
*
* Returns 0 on success.
*/
int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv)
{
int result = -1;
JavaVMInitArgs initArgs;
JavaVMOption opt;
char propBuf[PROPERTY_VALUE_MAX];
char stackTraceFileBuf[PROPERTY_VALUE_MAX];
char dexoptFlagsBuf[PROPERTY_VALUE_MAX];
char enableAssertBuf[sizeof("-ea:")-1 + PROPERTY_VALUE_MAX];
char jniOptsBuf[sizeof("-Xjniopts:")-1 + PROPERTY_VALUE_MAX];
char heapstartsizeOptsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
char heapsizeOptsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
char heapgrowthlimitOptsBuf[sizeof("-XX:HeapGrowthLimit=")-1 + PROPERTY_VALUE_MAX];
char extraOptsBuf[PROPERTY_VALUE_MAX];
char* stackTraceFile = NULL;
bool checkJni = false;
bool checkDexSum = false;
bool logStdio = false;
enum {
kEMDefault,
kEMIntPortable,
kEMIntFast,
#if defined(WITH_JIT)
kEMJitCompiler,
#endif
} executionMode = kEMDefault;
property_get("dalvik.vm.checkjni", propBuf, "");
if (strcmp(propBuf, "true") == 0) {
checkJni = true;
} else if (strcmp(propBuf, "false") != 0) {
/* property is neither true nor false; fall back on kernel parameter */
property_get("ro.kernel.android.checkjni", propBuf, "");
if (propBuf[0] == '1') {
checkJni = true;
}
}
property_get("dalvik.vm.execution-mode", propBuf, "");
if (strcmp(propBuf, "int:portable") == 0) {
executionMode = kEMIntPortable;
} else if (strcmp(propBuf, "int:fast") == 0) {
executionMode = kEMIntFast;
#if defined(WITH_JIT)
} else if (strcmp(propBuf, "int:jit") == 0) {
executionMode = kEMJitCompiler;
#endif
}
property_get("dalvik.vm.stack-trace-file", stackTraceFileBuf, "");
property_get("dalvik.vm.check-dex-sum", propBuf, "");
if (strcmp(propBuf, "true") == 0) {
checkDexSum = true;
}
property_get("log.redirect-stdio", propBuf, "");
if (strcmp(propBuf, "true") == 0) {
logStdio = true;
}
strcpy(enableAssertBuf, "-ea:");
property_get("dalvik.vm.enableassertions", enableAssertBuf+4, "");
strcpy(jniOptsBuf, "-Xjniopts:");
property_get("dalvik.vm.jniopts", jniOptsBuf+10, "");
/* route exit() to our handler */
opt.extraInfo = (void*) runtime_exit;
opt.optionString = "exit";
mOptions.add(opt);
/* route fprintf() to our handler */
opt.extraInfo = (void*) runtime_vfprintf;
opt.optionString = "vfprintf";
mOptions.add(opt);
/* register the framework-specific "is sensitive thread" hook */
opt.extraInfo = (void*) runtime_isSensitiveThread;
opt.optionString = "sensitiveThread";
mOptions.add(opt);
opt.extraInfo = NULL;
/* enable verbose; standard options are { jni, gc, class } */
//options[curOpt++].optionString = "-verbose:jni";
opt.optionString = "-verbose:gc";
mOptions.add(opt);
//options[curOpt++].optionString = "-verbose:class";
/*
* The default starting and maximum size of the heap. Larger
* values should be specified in a product property override.
*/
strcpy(heapstartsizeOptsBuf, "-Xms");
property_get("dalvik.vm.heapstartsize", heapstartsizeOptsBuf+4, "4m");
opt.optionString = heapstartsizeOptsBuf;
mOptions.add(opt);
strcpy(heapsizeOptsBuf, "-Xmx");
property_get("dalvik.vm.heapsize", heapsizeOptsBuf+4, "16m");
opt.optionString = heapsizeOptsBuf;
mOptions.add(opt);
strcpy(heapgrowthlimitOptsBuf, "-XX:HeapGrowthLimit=");
property_get("dalvik.vm.heapgrowthlimit", heapgrowthlimitOptsBuf+20, "");
if (heapgrowthlimitOptsBuf[20] != '\0') {
opt.optionString = heapgrowthlimitOptsBuf;
mOptions.add(opt);
}
/*
* Enable or disable dexopt features, such as bytecode verification and
* calculation of register maps for precise GC.
*/
property_get("dalvik.vm.dexopt-flags", dexoptFlagsBuf, "");
if (dexoptFlagsBuf[0] != '\0') {
const char* opc;
const char* val;
opc = strstr(dexoptFlagsBuf, "v="); /* verification */
if (opc != NULL) {
switch (*(opc+2)) {
case 'n': val = "-Xverify:none"; break;
case 'r': val = "-Xverify:remote"; break;
case 'a': val = "-Xverify:all"; break;
default: val = NULL; break;
}
if (val != NULL) {
opt.optionString = val;
mOptions.add(opt);
}
}
opc = strstr(dexoptFlagsBuf, "o="); /* optimization */
if (opc != NULL) {
switch (*(opc+2)) {
case 'n': val = "-Xdexopt:none"; break;
case 'v': val = "-Xdexopt:verified"; break;
case 'a': val = "-Xdexopt:all"; break;
case 'f': val = "-Xdexopt:full"; break;
default: val = NULL; break;
}
if (val != NULL) {
opt.optionString = val;
mOptions.add(opt);
}
}
opc = strstr(dexoptFlagsBuf, "m=y"); /* register map */
if (opc != NULL) {
opt.optionString = "-Xgenregmap";
mOptions.add(opt);
/* turn on precise GC while we're at it */
opt.optionString = "-Xgc:precise";
mOptions.add(opt);
}
}
/* enable debugging; set suspend=y to pause during VM init */
/* use android ADB transport */
opt.optionString =
"-agentlib:jdwp=transport=dt_android_adb,suspend=n,server=y";
mOptions.add(opt);
ALOGD("CheckJNI is %s\n", checkJni ? "ON" : "OFF");
if (checkJni) {
/* extended JNI checking */
opt.optionString = "-Xcheck:jni";
mOptions.add(opt);
/* set a cap on JNI global references */
opt.optionString = "-Xjnigreflimit:2000";
mOptions.add(opt);
/* with -Xcheck:jni, this provides a JNI function call trace */
//opt.optionString = "-verbose:jni";
//mOptions.add(opt);
}
char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:") + sizeof(propBuf)];
property_get("dalvik.vm.lockprof.threshold", propBuf, "");
if (strlen(propBuf) > 0) {
strcpy(lockProfThresholdBuf, "-Xlockprofthreshold:");
strcat(lockProfThresholdBuf, propBuf);
opt.optionString = lockProfThresholdBuf;
mOptions.add(opt);
}
#if defined(WITH_JIT)
/* Force interpreter-only mode for selected opcodes. Eg "1-0a,3c,f1-ff" */
char jitOpBuf[sizeof("-Xjitop:") + PROPERTY_VALUE_MAX];
property_get("dalvik.vm.jit.op", propBuf, "");
if (strlen(propBuf) > 0) {
strcpy(jitOpBuf, "-Xjitop:");
strcat(jitOpBuf, propBuf);
opt.optionString = jitOpBuf;
mOptions.add(opt);
}
/* Force interpreter-only mode for selected methods */
char jitMethodBuf[sizeof("-Xjitmethod:") + PROPERTY_VALUE_MAX];
property_get("dalvik.vm.jit.method", propBuf, "");
if (strlen(propBuf) > 0) {
strcpy(jitMethodBuf, "-Xjitmethod:");
strcat(jitMethodBuf, propBuf);
opt.optionString = jitMethodBuf;
mOptions.add(opt);
}
#endif
if (executionMode == kEMIntPortable) {
opt.optionString = "-Xint:portable";
mOptions.add(opt);
} else if (executionMode == kEMIntFast) {
opt.optionString = "-Xint:fast";
mOptions.add(opt);
#if defined(WITH_JIT)
} else if (executionMode == kEMJitCompiler) {
opt.optionString = "-Xint:jit";
mOptions.add(opt);
#endif
}
if (checkDexSum) {
/* perform additional DEX checksum tests */
opt.optionString = "-Xcheckdexsum";
mOptions.add(opt);
}
if (logStdio) {
/* convert stdout/stderr to log messages */
opt.optionString = "-Xlog-stdio";
mOptions.add(opt);
}
if (enableAssertBuf[4] != '\0') {
/* accept "all" to mean "all classes and packages" */
if (strcmp(enableAssertBuf+4, "all") == 0)
enableAssertBuf[3] = '\0';
ALOGI("Assertions enabled: '%s'\n", enableAssertBuf);
opt.optionString = enableAssertBuf;
mOptions.add(opt);
} else {
ALOGV("Assertions disabled\n");
}
if (jniOptsBuf[10] != '\0') {
ALOGI("JNI options: '%s'\n", jniOptsBuf);
opt.optionString = jniOptsBuf;
mOptions.add(opt);
}
if (stackTraceFileBuf[0] != '\0') {
static const char* stfOptName = "-Xstacktracefile:";
stackTraceFile = (char*) malloc(strlen(stfOptName) +
strlen(stackTraceFileBuf) +1);
strcpy(stackTraceFile, stfOptName);
strcat(stackTraceFile, stackTraceFileBuf);
opt.optionString = stackTraceFile;
mOptions.add(opt);
}
/* extra options; parse this late so it overrides others */
property_get("dalvik.vm.extra-opts", extraOptsBuf, "");
parseExtraOpts(extraOptsBuf);
/* Set the properties for locale */
{
char langOption[sizeof("-Duser.language=") + 3];
char regionOption[sizeof("-Duser.region=") + 3];
strcpy(langOption, "-Duser.language=");
strcpy(regionOption, "-Duser.region=");
readLocale(langOption, regionOption);
opt.extraInfo = NULL;
opt.optionString = langOption;
mOptions.add(opt);
opt.optionString = regionOption;
mOptions.add(opt);
}
/*
* We don't have /tmp on the device, but we often have an SD card. Apps
* shouldn't use this, but some test suites might want to exercise it.
*/
opt.optionString = "-Djava.io.tmpdir=/sdcard";
mOptions.add(opt);
initArgs.version = JNI_VERSION_1_4;
initArgs.options = mOptions.editArray();
initArgs.nOptions = mOptions.size();
initArgs.ignoreUnrecognized = JNI_FALSE;
/*
* Initialize the VM.
*
* The JavaVM* is essentially per-process, and the JNIEnv* is per-thread.
* If this call succeeds, the VM is ready, and we can start issuing
* JNI calls.
*/
if (JNI_CreateJavaVM(pJavaVM, pEnv, &initArgs) < 0) {
ALOGE("JNI_CreateJavaVM failed\n");
goto bail;
}
result = 0;
bail:
free(stackTraceFile);
return result;
}
char* AndroidRuntime::toSlashClassName(const char* className)
{
char* result = strdup(className);
for (char* cp = result; *cp != '\0'; cp++) {
if (*cp == '.') {
*cp = '/';
}
}
return result;
}
/*
* Start the Android runtime. This involves starting the virtual machine
* and calling the "static void main(String[] args)" method in the class
* named by "className".
*
* Passes the main function two arguments, the class name and the specified
* options string.
*/
void AndroidRuntime::start(const char* className, const char* options)
{
ALOGD("\n>>>>>> AndroidRuntime START %s <<<<<<\n",
className != NULL ? className : "(unknown)");
blockSigpipe();
/*
* 'startSystemServer == true' means runtime is obsolete and not run from
* init.rc anymore, so we print out the boot start event here.
*/
if (strcmp(options, "start-system-server") == 0) {
/* track our progress through the boot sequence */
const int LOG_BOOT_PROGRESS_START = 3000;
LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START,
ns2ms(systemTime(SYSTEM_TIME_MONOTONIC)));
}
const char* rootDir = getenv("ANDROID_ROOT");
if (rootDir == NULL) {
rootDir = "/system";
if (!hasDir("/system")) {
LOG_FATAL("No root directory specified, and /android does not exist.");
return;
}
setenv("ANDROID_ROOT", rootDir, 1);
}
//const char* kernelHack = getenv("LD_ASSUME_KERNEL");
//ALOGD("Found LD_ASSUME_KERNEL='%s'\n", kernelHack);
/* start the virtual machine */
JNIEnv* env;
if (startVm(&mJavaVM, &env) != 0) {
return;
}
onVmCreated(env);
/*
* Register android functions.
*/
if (startReg(env) < 0) {
ALOGE("Unable to register all android natives\n");
return;
}
/*
* We want to call main() with a String array with arguments in it.
* At present we have two arguments, the class name and an option string.
* Create an array to hold them.
*/
jclass stringClass;
jobjectArray strArray;
jstring classNameStr;
jstring optionsStr;
stringClass = env->FindClass("java/lang/String");
assert(stringClass != NULL);
strArray = env->NewObjectArray(2, stringClass, NULL);
assert(strArray != NULL);
classNameStr = env->NewStringUTF(className);
assert(classNameStr != NULL);
env->SetObjectArrayElement(strArray, 0, classNameStr);
optionsStr = env->NewStringUTF(options);
env->SetObjectArrayElement(strArray, 1, optionsStr);
/*
* Start VM. This thread becomes the main thread of the VM, and will
* not return until the VM exits.
*/
char* slashClassName = toSlashClassName(className);
jclass startClass = env->FindClass(slashClassName);
if (startClass == NULL) {
ALOGE("JavaVM unable to locate class '%s'\n", slashClassName);
/* keep going */
} else {
jmethodID startMeth = env->GetStaticMethodID(startClass, "main",
"([Ljava/lang/String;)V");
if (startMeth == NULL) {
ALOGE("JavaVM unable to find main() in '%s'\n", className);
/* keep going */
} else {
env->CallStaticVoidMethod(startClass, startMeth, strArray);
#if 0
if (env->ExceptionCheck())
threadExitUncaughtException(env);
#endif
}
}
free(slashClassName);
ALOGD("Shutting down VM\n");
if (mJavaVM->DetachCurrentThread() != JNI_OK)
ALOGW("Warning: unable to detach main thread\n");
if (mJavaVM->DestroyJavaVM() != 0)
ALOGW("Warning: VM did not shut down cleanly\n");
}
void AndroidRuntime::onExit(int code)
{
ALOGV("AndroidRuntime onExit calling exit(%d)", code);
exit(code);
}
void AndroidRuntime::onVmCreated(JNIEnv* env)
{
// If AndroidRuntime had anything to do here, we'd have done it in 'start'.
}
/*
* Get the JNIEnv pointer for this thread.
*
* Returns NULL if the slot wasn't allocated or populated.
*/
/*static*/ JNIEnv* AndroidRuntime::getJNIEnv()
{
JNIEnv* env;
JavaVM* vm = AndroidRuntime::getJavaVM();
assert(vm != NULL);
if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK)
return NULL;
return env;
}
/*
* Makes the current thread visible to the VM.
*
* The JNIEnv pointer returned is only valid for the current thread, and
* thus must be tucked into thread-local storage.
*/
static int javaAttachThread(const char* threadName, JNIEnv** pEnv)
{
JavaVMAttachArgs args;
JavaVM* vm;
jint result;
vm = AndroidRuntime::getJavaVM();
assert(vm != NULL);
args.version = JNI_VERSION_1_4;
args.name = (char*) threadName;
args.group = NULL;
result = vm->AttachCurrentThread(pEnv, (void*) &args);
if (result != JNI_OK)
ALOGI("NOTE: attach of thread '%s' failed\n", threadName);
return result;
}
/*
* Detach the current thread from the set visible to the VM.
*/
static int javaDetachThread(void)
{
JavaVM* vm;
jint result;
vm = AndroidRuntime::getJavaVM();
assert(vm != NULL);
result = vm->DetachCurrentThread();
if (result != JNI_OK)
ALOGE("ERROR: thread detach failed\n");
return result;
}
/*
* When starting a native thread that will be visible from the VM, we
* bounce through this to get the right attach/detach action.
* Note that this function calls free(args)
*/
/*static*/ int AndroidRuntime::javaThreadShell(void* args) {
void* start = ((void**)args)[0];
void* userData = ((void **)args)[1];
char* name = (char*) ((void **)args)[2]; // we own this storage
free(args);
JNIEnv* env;
int result;
/* hook us into the VM */
if (javaAttachThread(name, &env) != JNI_OK)
return -1;
/* start the thread running */
result = (*(android_thread_func_t)start)(userData);
/* unhook us */
javaDetachThread();
free(name);
return result;
}
/*
* This is invoked from androidCreateThreadEtc() via the callback
* set with androidSetCreateThreadFunc().
*
* We need to create the new thread in such a way that it gets hooked
* into the VM before it really starts executing.
*/
/*static*/ int AndroidRuntime::javaCreateThreadEtc(
android_thread_func_t entryFunction,
void* userData,
const char* threadName,
int32_t threadPriority,
size_t threadStackSize,
android_thread_id_t* threadId)
{
void** args = (void**) malloc(3 * sizeof(void*)); // javaThreadShell must free
int result;
assert(threadName != NULL);
args[0] = (void*) entryFunction;
args[1] = userData;
args[2] = (void*) strdup(threadName); // javaThreadShell must free
result = androidCreateRawThreadEtc(AndroidRuntime::javaThreadShell, args,
threadName, threadPriority, threadStackSize, threadId);
return result;
}
/*
* Create a thread that is visible from the VM.
*
* This is called from elsewhere in the library.
*/
/*static*/ android_thread_id_t AndroidRuntime::createJavaThread(const char* name,
void (*start)(void *), void* arg)
{
android_thread_id_t threadId = 0;
javaCreateThreadEtc((android_thread_func_t) start, arg, name,
ANDROID_PRIORITY_DEFAULT, 0, &threadId);
return threadId;
}
#if 0
static void quickTest(void* arg)
{
const char* str = (const char*) arg;
printf("In quickTest: %s\n", str);
}
#endif
#ifdef NDEBUG
#define REG_JNI(name) { name }
struct RegJNIRec {
int (*mProc)(JNIEnv*);
};
#else
#define REG_JNI(name) { name, #name }
struct RegJNIRec {
int (*mProc)(JNIEnv*);
const char* mName;
};
#endif
typedef void (*RegJAMProc)();
static int register_jni_procs(const RegJNIRec array[], size_t count, JNIEnv* env)
{
for (size_t i = 0; i < count; i++) {
if (array[i].mProc(env) < 0) {
#ifndef NDEBUG
ALOGD("----------!!! %s failed to load\n", array[i].mName);
#endif
return -1;
}
}
return 0;
}
static void register_jam_procs(const RegJAMProc array[], size_t count)
{
for (size_t i = 0; i < count; i++) {
array[i]();
}
}
static const RegJNIRec gRegJNI[] = {
REG_JNI(register_android_debug_JNITest),
REG_JNI(register_com_android_internal_os_RuntimeInit),
REG_JNI(register_android_os_SystemClock),
REG_JNI(register_android_util_EventLog),
REG_JNI(register_android_util_Log),
REG_JNI(register_android_util_FloatMath),
REG_JNI(register_android_text_format_Time),
REG_JNI(register_android_content_AssetManager),
REG_JNI(register_android_content_StringBlock),
REG_JNI(register_android_content_XmlBlock),
REG_JNI(register_android_emoji_EmojiFactory),
REG_JNI(register_android_text_AndroidCharacter),
REG_JNI(register_android_text_AndroidBidi),
REG_JNI(register_android_text_KeyCharacterMap),
REG_JNI(register_android_os_Process),
REG_JNI(register_android_os_SystemProperties),
REG_JNI(register_android_os_Binder),
REG_JNI(register_android_view_Display),
REG_JNI(register_android_view_DisplayEventReceiver),
REG_JNI(register_android_nio_utils),
REG_JNI(register_android_graphics_PixelFormat),
REG_JNI(register_android_graphics_Graphics),
REG_JNI(register_android_view_GLES20Canvas),
REG_JNI(register_android_view_HardwareRenderer),
REG_JNI(register_android_view_Surface),
REG_JNI(register_android_view_TextureView),
REG_JNI(register_com_google_android_gles_jni_EGLImpl),
REG_JNI(register_com_google_android_gles_jni_GLImpl),
REG_JNI(register_android_opengl_jni_GLES10),
REG_JNI(register_android_opengl_jni_GLES10Ext),
REG_JNI(register_android_opengl_jni_GLES11),
REG_JNI(register_android_opengl_jni_GLES11Ext),
REG_JNI(register_android_opengl_jni_GLES20),
REG_JNI(register_android_graphics_Bitmap),
REG_JNI(register_android_graphics_BitmapFactory),
REG_JNI(register_android_graphics_BitmapRegionDecoder),
REG_JNI(register_android_graphics_Camera),
REG_JNI(register_android_graphics_Canvas),
REG_JNI(register_android_graphics_ColorFilter),
REG_JNI(register_android_graphics_DrawFilter),
REG_JNI(register_android_graphics_Interpolator),
REG_JNI(register_android_graphics_LayerRasterizer),
REG_JNI(register_android_graphics_MaskFilter),
REG_JNI(register_android_graphics_Matrix),
REG_JNI(register_android_graphics_Movie),
REG_JNI(register_android_graphics_NinePatch),
REG_JNI(register_android_graphics_Paint),
REG_JNI(register_android_graphics_Path),
REG_JNI(register_android_graphics_PathMeasure),
REG_JNI(register_android_graphics_PathEffect),
REG_JNI(register_android_graphics_Picture),
REG_JNI(register_android_graphics_PorterDuff),
REG_JNI(register_android_graphics_Rasterizer),
REG_JNI(register_android_graphics_Region),
REG_JNI(register_android_graphics_Shader),
REG_JNI(register_android_graphics_SurfaceTexture),
REG_JNI(register_android_graphics_Typeface),
REG_JNI(register_android_graphics_Xfermode),
REG_JNI(register_android_graphics_YuvImage),
REG_JNI(register_android_database_CursorWindow),
REG_JNI(register_android_database_SQLiteConnection),
REG_JNI(register_android_database_SQLiteGlobal),
REG_JNI(register_android_database_SQLiteDebug),
REG_JNI(register_android_os_Debug),
REG_JNI(register_android_os_FileObserver),
REG_JNI(register_android_os_FileUtils),
REG_JNI(register_android_os_MessageQueue),
REG_JNI(register_android_os_ParcelFileDescriptor),
REG_JNI(register_android_os_Power),
REG_JNI(register_android_os_StatFs),
REG_JNI(register_android_os_UEventObserver),
REG_JNI(register_android_net_LocalSocketImpl),
REG_JNI(register_android_net_NetworkUtils),
REG_JNI(register_android_net_TrafficStats),
REG_JNI(register_android_net_wifi_WifiManager),
REG_JNI(register_android_os_MemoryFile),
REG_JNI(register_com_android_internal_os_ZygoteInit),
REG_JNI(register_android_hardware_Camera),
REG_JNI(register_android_hardware_SensorManager),
REG_JNI(register_android_hardware_UsbDevice),
REG_JNI(register_android_hardware_UsbDeviceConnection),
REG_JNI(register_android_hardware_UsbRequest),
REG_JNI(register_android_media_AudioRecord),
REG_JNI(register_android_media_AudioSystem),
REG_JNI(register_android_media_AudioTrack),
REG_JNI(register_android_media_JetPlayer),
REG_JNI(register_android_media_ToneGenerator),
REG_JNI(register_android_opengl_classes),
REG_JNI(register_android_bluetooth_HeadsetBase),
REG_JNI(register_android_bluetooth_BluetoothAudioGateway),
REG_JNI(register_android_bluetooth_BluetoothSocket),
REG_JNI(register_android_server_BluetoothService),
REG_JNI(register_android_server_BluetoothEventLoop),
REG_JNI(register_android_server_BluetoothA2dpService),
REG_JNI(register_android_server_NetworkManagementSocketTagger),
REG_JNI(register_android_server_Watchdog),
REG_JNI(register_android_ddm_DdmHandleNativeHeap),
REG_JNI(register_android_backup_BackupDataInput),
REG_JNI(register_android_backup_BackupDataOutput),
REG_JNI(register_android_backup_FileBackupHelperBase),
REG_JNI(register_android_backup_BackupHelperDispatcher),
REG_JNI(register_android_app_backup_FullBackup),
REG_JNI(register_android_app_ActivityThread),
REG_JNI(register_android_app_NativeActivity),
REG_JNI(register_android_view_InputChannel),
REG_JNI(register_android_view_InputEventReceiver),
REG_JNI(register_android_view_KeyEvent),
REG_JNI(register_android_view_MotionEvent),
REG_JNI(register_android_view_PointerIcon),
REG_JNI(register_android_view_VelocityTracker),
REG_JNI(register_android_content_res_ObbScanner),
REG_JNI(register_android_content_res_Configuration),
REG_JNI(register_android_animation_PropertyValuesHolder),
REG_JNI(register_com_android_internal_content_NativeLibraryHelper),
};
/*
* Register android native functions with the VM.
*/
/*static*/ int AndroidRuntime::startReg(JNIEnv* env)
{
/*
* This hook causes all future threads created in this process to be
* attached to the JavaVM. (This needs to go away in favor of JNI
* Attach calls.)
*/
androidSetCreateThreadFunc((android_create_thread_fn) javaCreateThreadEtc);
ALOGV("--- registering native functions ---\n");
/*
* Every "register" function calls one or more things that return
* a local reference (e.g. FindClass). Because we haven't really
* started the VM yet, they're all getting stored in the base frame
* and never released. Use Push/Pop to manage the storage.
*/
env->PushLocalFrame(200);
if (register_jni_procs(gRegJNI, NELEM(gRegJNI), env) < 0) {
env->PopLocalFrame(NULL);
return -1;
}
env->PopLocalFrame(NULL);
//createJavaThread("fubar", quickTest, (void*) "hello");
return 0;
}
AndroidRuntime* AndroidRuntime::getRuntime()
{
return gCurRuntime;
}
/**
* Used by WithFramework to register native functions.
*/
extern "C"
jint Java_com_android_internal_util_WithFramework_registerNatives(
JNIEnv* env, jclass clazz) {
return register_jni_procs(gRegJNI, NELEM(gRegJNI), env);
}
/**
* Used by LoadClass to register native functions.
*/
extern "C"
jint Java_LoadClass_registerNatives(JNIEnv* env, jclass clazz) {
return register_jni_procs(gRegJNI, NELEM(gRegJNI), env);
}
} // namespace android
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