/*
* Create some "stock" exceptions. These can be thrown when the system is
* too screwed up to allocate and initialize anything, or when we don't
* need a meaningful stack trace.
*
* We can't do this during the initial startup because we need to execute
* the constructors.
*/
bool dvmCreateStockExceptions()
{
/*
* Pre-allocate some throwables. These need to be explicitly added
* to the GC's root set (see dvmHeapMarkRootSet()).
*/
gDvm.outOfMemoryObj = createStockException("Ljava/lang/OutOfMemoryError;",
"[memory exhausted]");
dvmReleaseTrackedAlloc(gDvm.outOfMemoryObj, NULL);
gDvm.internalErrorObj = createStockException("Ljava/lang/InternalError;",
"[pre-allocated]");
dvmReleaseTrackedAlloc(gDvm.internalErrorObj, NULL);
gDvm.noClassDefFoundErrorObj =
createStockException("Ljava/lang/NoClassDefFoundError;",
"[generic]");
dvmReleaseTrackedAlloc(gDvm.noClassDefFoundErrorObj, NULL);
if (gDvm.outOfMemoryObj == NULL || gDvm.internalErrorObj == NULL ||
gDvm.noClassDefFoundErrorObj == NULL)
{
LOGW("Unable to create stock exceptions");
return false;
}
return true;
}
/*
* Get an array with all constructors declared by a class.
*/
ArrayObject* dvmGetDeclaredConstructors(ClassObject* clazz, bool publicOnly)
{
if (!dvmIsClassInitialized(gDvm.classJavaLangReflectConstructor))
dvmInitClass(gDvm.classJavaLangReflectConstructor);
/*
* Ordinarily we init the class the first time we resolve a method.
* We're bypassing the normal resolution mechanism, so we init it here.
*/
if (!dvmIsClassInitialized(clazz))
dvmInitClass(clazz);
/*
* Count up the #of relevant methods.
*/
size_t count = 0;
for (int i = 0; i < clazz->directMethodCount; ++i) {
Method* meth = &clazz->directMethods[i];
if ((!publicOnly || dvmIsPublicMethod(meth)) &&
dvmIsConstructorMethod(meth) && !dvmIsStaticMethod(meth))
{
count++;
}
}
/*
* Create an array of Constructor objects.
*/
ClassObject* arrayClass = gDvm.classJavaLangReflectConstructorArray;
ArrayObject* ctorArray = dvmAllocArrayByClass(arrayClass, count, ALLOC_DEFAULT);
if (ctorArray == NULL)
return NULL;
/*
* Fill out the array.
*/
size_t ctorObjCount = 0;
for (int i = 0; i < clazz->directMethodCount; ++i) {
Method* meth = &clazz->directMethods[i];
if ((!publicOnly || dvmIsPublicMethod(meth)) &&
dvmIsConstructorMethod(meth) && !dvmIsStaticMethod(meth))
{
Object* ctorObj = createConstructorObject(meth);
if (ctorObj == NULL) {
dvmReleaseTrackedAlloc((Object*) ctorArray, NULL);
return NULL;
}
dvmSetObjectArrayElement(ctorArray, ctorObjCount, ctorObj);
++ctorObjCount;
dvmReleaseTrackedAlloc(ctorObj, NULL);
}
}
assert(ctorObjCount == ctorArray->length);
/* caller must call dvmReleaseTrackedAlloc */
return ctorArray;
}
/*
* Create a "stock instance" of an exception class.
*/
static Object* createStockException(const char* descriptor, const char* msg)
{
Thread* self = dvmThreadSelf();
StringObject* msgStr = NULL;
ClassObject* clazz;
Method* init;
Object* obj;
/* find class, initialize if necessary */
clazz = dvmFindSystemClass(descriptor);
if (clazz == NULL) {
LOGE("Unable to find %s", descriptor);
return NULL;
}
init = dvmFindDirectMethodByDescriptor(clazz, "<init>",
"(Ljava/lang/String;)V");
if (init == NULL) {
LOGE("Unable to find String-arg constructor for %s", descriptor);
return NULL;
}
obj = dvmAllocObject(clazz, ALLOC_DEFAULT);
if (obj == NULL)
return NULL;
if (msg == NULL) {
msgStr = NULL;
} else {
msgStr = dvmCreateStringFromCstr(msg);
if (msgStr == NULL) {
LOGW("Could not allocate message string \"%s\"", msg);
dvmReleaseTrackedAlloc(obj, self);
return NULL;
}
}
JValue unused;
dvmCallMethod(self, init, obj, &unused, msgStr);
if (dvmCheckException(self)) {
dvmReleaseTrackedAlloc((Object*) msgStr, self);
dvmReleaseTrackedAlloc(obj, self);
return NULL;
}
dvmReleaseTrackedAlloc((Object*) msgStr, self); // okay if msgStr NULL
return obj;
}
java_lang_String_ap fastiva_Dalvik_dalvik_system_VMRuntime_properties(dalvik_system_VMRuntime_p self) {
#endif
ArrayObject* result = dvmCreateStringArray(*gDvm.properties);
dvmReleaseTrackedAlloc((Object*) result, dvmThreadSelf());
RETURN_PTR((java_lang_String_ap)result);
}
java_lang_String_p fastiva_Dalvik_java_lang_System_mapLibraryName(java_lang_String_p nameObj) {
#endif
StringObject* result = NULL;
char* name;
char* mappedName;
if (nameObj == NULL) {
dvmThrowNullPointerException("userLibName == null");
THROW_V();
}
name = dvmCreateCstrFromString(nameObj);
#ifdef _DEBUG
assert(strstr(name, "cfb") == NULL);
#endif
mappedName = dvmCreateSystemLibraryName(name);
if (mappedName != NULL) {
result = dvmCreateStringFromCstr(mappedName);
dvmReleaseTrackedAlloc((Object*) result, NULL);
}
free(name);
free(mappedName);
RETURN_PTR((java_lang_String_p)result);
}
static void Dalvik_dalvik_system_VMRuntime_properties(const u4* args,
JValue* pResult)
{
ArrayObject* result = dvmCreateStringArray(*gDvm.properties);
dvmReleaseTrackedAlloc((Object*) result, dvmThreadSelf());
RETURN_PTR(result);
}
java_lang_Object_p fastiva_Dalvik_dalvik_system_VMRuntime_newNonMovableArray(dalvik_system_VMRuntime_p self, java_lang_Class_p elementClass, jint length) {
#endif
if (elementClass == NULL) {
dvmThrowNullPointerException("elementClass == null");
THROW_V();
}
if (length < 0) {
dvmThrowNegativeArraySizeException(length);
THROW_V();
}
// TODO: right now, we don't have a copying collector, so there's no need
// to do anything special here, but we ought to pass the non-movability
// through to the allocator.
ClassObject* arrayClass = dvmFindArrayClassForElement(elementClass);
ArrayObject* newArray = dvmAllocArrayByClass(arrayClass,
length,
ALLOC_NON_MOVING);
if (newArray == NULL) {
assert(dvmCheckException(dvmThreadSelf()));
THROW_V();
}
dvmReleaseTrackedAlloc((Object*) newArray, NULL);
RETURN_PTR(newArray);
}
static void Dalvik_dalvik_system_VMRuntime_newNonMovableArray(const u4* args,
JValue* pResult)
{
ClassObject* elementClass = (ClassObject*) args[1];
int length = args[2];
if (elementClass == NULL) {
dvmThrowNullPointerException("elementClass == null");
RETURN_VOID();
}
if (length < 0) {
dvmThrowNegativeArraySizeException(length);
RETURN_VOID();
}
// TODO: right now, we don't have a copying collector, so there's no need
// to do anything special here, but we ought to pass the non-movability
// through to the allocator.
ClassObject* arrayClass = dvmFindArrayClassForElement(elementClass);
ArrayObject* newArray = dvmAllocArrayByClass(arrayClass,
length,
ALLOC_NON_MOVING);
if (newArray == NULL) {
assert(dvmCheckException(dvmThreadSelf()));
RETURN_VOID();
}
dvmReleaseTrackedAlloc((Object*) newArray, NULL);
RETURN_PTR(newArray);
}
/*
* private Object getField(Object o, Class declaringClass, Class type,
* int slot, boolean noAccessCheck)
*
* Primitive types need to be boxed.
*/
static void Dalvik_java_lang_reflect_Field_getField(const u4* args,
JValue* pResult)
{
// ignore thisPtr in args[0]
Object* obj = (Object*) args[1];
ClassObject* declaringClass = (ClassObject*) args[2];
ClassObject* fieldType = (ClassObject*) args[3];
int slot = args[4];
bool noAccessCheck = (args[5] != 0);
JValue value;
const JValue* fieldPtr;
DataObject* result;
//dvmDumpClass(obj->clazz, kDumpClassFullDetail);
/* get a pointer to the field's data; performs access checks */
fieldPtr = getFieldDataAddr(obj, declaringClass, slot, false,noAccessCheck);
if (fieldPtr == NULL)
RETURN_VOID();
/* copy 4 or 8 bytes out */
if (fieldType->primitiveType == PRIM_LONG ||
fieldType->primitiveType == PRIM_DOUBLE)
{
value.j = fieldPtr->j;
} else {
value.i = fieldPtr->i;
}
result = dvmWrapPrimitive(value, fieldType);
dvmReleaseTrackedAlloc((Object*) result, NULL);
RETURN_PTR(result);
}
/*
* Create a new java.lang.reflect.Field object from "field".
*
* The Field spec doesn't specify the constructor. We're going to use the
* one from our existing class libs:
*
* private Field(Class declaringClass, Class type, String name, int slot)
*/
static Object* createFieldObject(Field* field, const ClassObject* clazz)
{
Object* result = NULL;
Object* fieldObj = NULL;
StringObject* nameObj = NULL;
ClassObject* type;
char* mangle;
char* cp;
int slot, field_idx;
assert(dvmIsClassInitialized(gDvm.classJavaLangReflectField));
fieldObj = dvmAllocObject(gDvm.classJavaLangReflectField, ALLOC_DEFAULT);
if (fieldObj == NULL)
goto bail;
cp = mangle = strdup(field->signature);
type = convertSignaturePartToClass(&cp, clazz);
free(mangle);
if (type == NULL)
goto bail;
nameObj = dvmCreateStringFromCstr(field->name);
if (nameObj == NULL)
goto bail;
slot = fieldToSlot(field, clazz);
field_idx = dvmGetFieldIdx(field);
JValue unused;
dvmCallMethod(dvmThreadSelf(), gDvm.methJavaLangReflectField_init,
fieldObj, &unused, clazz, type, nameObj, slot, field_idx);
if (dvmCheckException(dvmThreadSelf())) {
ALOGD("Field class init threw exception");
goto bail;
}
result = fieldObj;
bail:
dvmReleaseTrackedAlloc((Object*) nameObj, NULL);
if (result == NULL)
dvmReleaseTrackedAlloc((Object*) fieldObj, NULL);
/* caller must dvmReleaseTrackedAlloc(result) */
return result;
}
/*
* private static String[] getClassNameList(int cookie)
*
* Returns a String array that holds the names of all classes in the
* specified DEX file.
*/
static void Dalvik_dalvik_system_DexFile_getClassNameList(const u4* args,
JValue* pResult)
{
int cookie = args[0];
DexOrJar* pDexOrJar = (DexOrJar*) cookie;
DvmDex* pDvmDex;
DexFile* pDexFile;
ArrayObject* stringArray;
Thread* self = dvmThreadSelf();
if (!validateCookie(cookie))
RETURN_VOID();
if (pDexOrJar->isDex)
pDvmDex = dvmGetRawDexFileDex(pDexOrJar->pRawDexFile);
else
pDvmDex = dvmGetJarFileDex(pDexOrJar->pJarFile);
assert(pDvmDex != NULL);
pDexFile = pDvmDex->pDexFile;
int count = pDexFile->pHeader->classDefsSize;
stringArray = dvmAllocObjectArray(gDvm.classJavaLangString, count,
ALLOC_DEFAULT);
if (stringArray == NULL) {
/* probably OOM */
ALOGD("Failed allocating array of %d strings\n", count);
assert(dvmCheckException(self));
RETURN_VOID();
}
int i;
for (i = 0; i < count; i++) {
const DexClassDef* pClassDef = dexGetClassDef(pDexFile, i);
const char* descriptor =
dexStringByTypeIdx(pDexFile, pClassDef->classIdx);
char* className = dvmDescriptorToDot(descriptor);
StringObject* str = dvmCreateStringFromCstr(className);
dvmSetObjectArrayElement(stringArray, i, (Object *)str);
dvmReleaseTrackedAlloc((Object *)str, self);
free(className);
}
dvmReleaseTrackedAlloc((Object*)stringArray, self);
RETURN_PTR(stringArray);
}
/*
* Convert an array of char* into a String[].
*
* Returns NULL on failure, with an exception raised.
*/
static ArrayObject* convertStringArray(char** strings, size_t count)
{
Thread* self = dvmThreadSelf();
/*
* Allocate an array to hold the String objects.
*/
ClassObject* stringArrayClass =
dvmFindArrayClass("[Ljava/lang/String;", NULL);
if (stringArrayClass == NULL) {
/* shouldn't happen */
LOGE("Unable to find [Ljava/lang/String;\n");
dvmAbort();
}
ArrayObject* stringArray =
dvmAllocArrayByClass(stringArrayClass, count, ALLOC_DEFAULT);
if (stringArray == NULL) {
/* probably OOM */
LOGD("Failed allocating array of %d strings\n", count);
assert(dvmCheckException(self));
return NULL;
}
/*
* Create the individual String objects and add them to the array.
*/
size_t i;
for (i = 0; i < count; i++) {
Object *str =
(Object *)dvmCreateStringFromCstr(strings[i]);
if (str == NULL) {
/* probably OOM; drop out now */
assert(dvmCheckException(self));
dvmReleaseTrackedAlloc((Object*)stringArray, self);
return NULL;
}
dvmSetObjectArrayElement(stringArray, i, str);
/* stored in tracked array, okay to release */
dvmReleaseTrackedAlloc(str, self);
}
dvmReleaseTrackedAlloc((Object*)stringArray, self);
return stringArray;
}
/*
* public static byte[] getThreadStats()
*
* Get a buffer full of thread info.
*/
static void Dalvik_org_apache_harmony_dalvik_ddmc_DdmVmInternal_getThreadStats(
const u4* args, JValue* pResult)
{
UNUSED_PARAMETER(args);
ArrayObject* result = dvmDdmGenerateThreadStats();
dvmReleaseTrackedAlloc((Object*) result, NULL);
RETURN_PTR(result);
}
/*
* private Object internalClone()
*
* Implements most of Object.clone().
*/
static void Dalvik_java_lang_Object_internalClone(const u4* args,
JValue* pResult)
{
Object* thisPtr = (Object*) args[0];
Object* clone = dvmCloneObject(thisPtr);
dvmReleaseTrackedAlloc(clone, NULL);
RETURN_PTR(clone);
}
/*
* private static Object[] getClassSignatureAnnotation(Class clazz)
*
* Return the Signature annotation for the specified class. Equivalent to
* Class.getSignatureAnnotation(), but available to java.lang.reflect.
*/
static void Dalvik_java_lang_reflect_AccessibleObject_getClassSignatureAnnotation(
const u4* args, JValue* pResult)
{
ClassObject* clazz = (ClassObject*) args[0];
ArrayObject* arr = dvmGetClassSignatureAnnotation(clazz);
dvmReleaseTrackedAlloc((Object*) arr, NULL);
RETURN_PTR(arr);
}
/*
* public static byte[] getRecentAllocations()
*
* Fill a buffer with data on recent heap allocations.
*/
static void
Dalvik_org_apache_harmony_dalvik_ddmc_DdmVmInternal_getRecentAllocations(
const u4* args, JValue* pResult)
{
ArrayObject* data;
data = dvmDdmGetRecentAllocations();
dvmReleaseTrackedAlloc((Object*) data, NULL);
RETURN_PTR(data);
}
/*
* Wrap the now-pending exception in a different exception. This is useful
* for reflection stuff that wants to hand a checked exception back from a
* method that doesn't declare it.
*
* If something fails, an (unchecked) exception related to that failure
* will be pending instead.
*/
void dvmWrapException(const char* newExcepStr)
{
Thread* self = dvmThreadSelf();
Object* origExcep;
ClassObject* iteClass;
origExcep = dvmGetException(self);
dvmAddTrackedAlloc(origExcep, self); // don't let the GC free it
dvmClearException(self); // clear before class lookup
iteClass = dvmFindSystemClass(newExcepStr);
if (iteClass != NULL) {
Object* iteExcep;
Method* initMethod;
iteExcep = dvmAllocObject(iteClass, ALLOC_DEFAULT);
if (iteExcep != NULL) {
initMethod = dvmFindDirectMethodByDescriptor(iteClass, "<init>",
"(Ljava/lang/Throwable;)V");
if (initMethod != NULL) {
JValue unused;
dvmCallMethod(self, initMethod, iteExcep, &unused,
origExcep);
/* if <init> succeeded, replace the old exception */
if (!dvmCheckException(self))
dvmSetException(self, iteExcep);
}
dvmReleaseTrackedAlloc(iteExcep, NULL);
/* if initMethod doesn't exist, or failed... */
if (!dvmCheckException(self))
dvmSetException(self, origExcep);
} else {
/* leave OutOfMemoryError pending */
}
} else {
/* leave ClassNotFoundException pending */
}
assert(dvmCheckException(self));
dvmReleaseTrackedAlloc(origExcep, self);
}
/*
* static String[] getVmFeatureList()
*
* Return a set of strings describing available VM features (this is chiefly
* of interest to DDMS).
*/
static void Dalvik_dalvik_system_VMDebug_getVmFeatureList(const u4* args, JValue* pResult) {
std::vector<std::string> features;
features.push_back("method-trace-profiling");
features.push_back("method-trace-profiling-streaming");
features.push_back("hprof-heap-dump");
features.push_back("hprof-heap-dump-streaming");
ArrayObject* result = dvmCreateStringArray(features);
dvmReleaseTrackedAlloc((Object*) result, dvmThreadSelf());
RETURN_PTR(result);
}
/*
* private static String[] getClassNameList(int cookie)
*
* Returns a String array that holds the names of all classes in the
* specified DEX file.
*/
static void Dalvik_dalvik_system_DexFile_getClassNameList(const u4* args,
JValue* pResult)
{
int cookie = args[0];
DexOrJar* pDexOrJar = (DexOrJar*) cookie;
DvmDex* pDvmDex;
DexFile* pDexFile;
ArrayObject* stringArray;
if (!validateCookie(cookie))
RETURN_VOID();
if (pDexOrJar->isDex)
pDvmDex = dvmGetRawDexFileDex(pDexOrJar->pRawDexFile);
else
pDvmDex = dvmGetJarFileDex(pDexOrJar->pJarFile);
assert(pDvmDex != NULL);
pDexFile = pDvmDex->pDexFile;
int count = pDexFile->pHeader->classDefsSize;
stringArray = dvmAllocObjectArray(gDvm.classJavaLangString, count,
ALLOC_DEFAULT);
if (stringArray == NULL)
RETURN_VOID(); // should be an OOM pending
StringObject** contents = (StringObject**) stringArray->contents;
int i;
for (i = 0; i < count; i++) {
const DexClassDef* pClassDef = dexGetClassDef(pDexFile, i);
const char* descriptor =
dexStringByTypeIdx(pDexFile, pClassDef->classIdx);
char* className = dvmDescriptorToDot(descriptor);
contents[i] = dvmCreateStringFromCstr(className, ALLOC_DEFAULT);
dvmReleaseTrackedAlloc((Object*) contents[i], NULL);
free(className);
}
dvmReleaseTrackedAlloc((Object*)stringArray, NULL);
RETURN_PTR(stringArray);
}
/*
* Find a class by name, initializing it if requested.
*/
ClassObject* dvmFindClassByName(StringObject* nameObj, Object* loader,
bool doInit)
{
ClassObject* clazz = NULL;
char* name = NULL;
char* descriptor = NULL;
if (nameObj == NULL) {
dvmThrowException("Ljava/lang/NullPointerException;", NULL);
goto bail;
}
name = dvmCreateCstrFromString(nameObj);
/*
* We need to validate and convert the name (from x.y.z to x/y/z). This
* is especially handy for array types, since we want to avoid
* auto-generating bogus array classes.
*/
if (!validateClassName(name)) {
LOGW("dvmFindClassByName rejecting '%s'\n", name);
dvmThrowException("Ljava/lang/ClassNotFoundException;", name);
goto bail;
}
descriptor = dvmDotToDescriptor(name);
if (descriptor == NULL) {
goto bail;
}
if (doInit)
clazz = dvmFindClass(descriptor, loader);
else
clazz = dvmFindClassNoInit(descriptor, loader);
if (clazz == NULL) {
LOGVV("FAIL: load %s (%d)\n", descriptor, doInit);
Thread* self = dvmThreadSelf();
Object* oldExcep = dvmGetException(self);
dvmAddTrackedAlloc(oldExcep, self); /* don't let this be GCed */
dvmClearException(self);
dvmThrowChainedException("Ljava/lang/ClassNotFoundException;",
name, oldExcep);
dvmReleaseTrackedAlloc(oldExcep, self);
} else {
LOGVV("GOOD: load %s (%d) --> %p ldr=%p\n",
descriptor, doInit, clazz, clazz->classLoader);
}
bail:
free(name);
free(descriptor);
return clazz;
}
/*
* Allocate a new instance of the class String, performing first-use
* initialization of the class if necessary. Upon success, the
* returned value will have all its fields except hashCode already
* filled in, including a reference to a newly-allocated char[] for
* the contents, sized as given. Additionally, a reference to the
* chars array is stored to the pChars pointer. Callers must
* subsequently call dvmReleaseTrackedAlloc() on the result pointer.
* This function returns NULL on failure.
*/
static StringObject* makeStringObject(u4 charsLength, ArrayObject** pChars)
{
/*
* The String class should have already gotten found (but not
* necessarily initialized) before making it here. We assert it
* explicitly, since historically speaking, we have had bugs with
* regard to when the class String gets set up. The assert helps
* make any regressions easier to diagnose.
*/
assert(gDvm.classJavaLangString != NULL);
if (!dvmIsClassInitialized(gDvm.classJavaLangString)) {
/* Perform first-time use initialization of the class. */
if (!dvmInitClass(gDvm.classJavaLangString)) {
LOGE("FATAL: Could not initialize class String");
dvmAbort();
}
}
Object* result = dvmAllocObject(gDvm.classJavaLangString, ALLOC_DEFAULT);
if (result == NULL) {
return NULL;
}
ArrayObject* chars = dvmAllocPrimitiveArray('C', charsLength, ALLOC_DEFAULT);
if (chars == NULL) {
dvmReleaseTrackedAlloc(result, NULL);
return NULL;
}
dvmSetFieldInt(result, STRING_FIELDOFF_COUNT, charsLength);
dvmSetFieldObject(result, STRING_FIELDOFF_VALUE, (Object*) chars);
dvmReleaseTrackedAlloc((Object*) chars, NULL);
/* Leave offset and hashCode set to zero. */
*pChars = chars;
return (StringObject*) result;
}
/*
* static Object[] getSignatureAnnotation()
*
* Returns the signature annotation.
*/
static void Dalvik_java_lang_reflect_Method_getSignatureAnnotation(
const u4* args, JValue* pResult)
{
ClassObject* declaringClass = (ClassObject*) args[0];
int slot = args[1];
Method* meth;
meth = dvmSlotToMethod(declaringClass, slot);
assert(meth != NULL);
ArrayObject* arr = dvmGetMethodSignatureAnnotation(meth);
dvmReleaseTrackedAlloc((Object*) arr, NULL);
RETURN_PTR(arr);
}
/*
* public Annotation[][] getParameterAnnotations(Class declaringClass, int slot)
*
* Return the annotations declared for this constructor's parameters.
*/
static void Dalvik_java_lang_reflect_Constructor_getParameterAnnotations(
const u4* args, JValue* pResult)
{
// ignore thisPtr in args[0]
ClassObject* declaringClass = (ClassObject*) args[1];
int slot = args[2];
Method* meth;
meth = dvmSlotToMethod(declaringClass, slot);
assert(meth != NULL);
ArrayObject* annos = dvmGetParameterAnnotations(meth);
dvmReleaseTrackedAlloc((Object*)annos, NULL);
RETURN_PTR(annos);
}
/*
* private Object[] getSignatureAnnotation()
*
* Returns the signature annotation.
*/
static void Dalvik_java_lang_reflect_Field_getSignatureAnnotation(const u4* args,
JValue* pResult)
{
// ignore thisPtr in args[0]
ClassObject* declaringClass = (ClassObject*) args[1];
int slot = args[2];
Field* field;
field = dvmSlotToField(declaringClass, slot);
assert(field != NULL);
ArrayObject* arr = dvmGetFieldSignatureAnnotation(field);
dvmReleaseTrackedAlloc((Object*) arr, NULL);
RETURN_PTR(arr);
}
/*
* Resolve a string reference.
*
* Finding the string is easy. We need to return a reference to a
* java/lang/String object, not a bunch of characters, which means the
* first time we get here we need to create an interned string.
*/
StringObject* dvmResolveString(const ClassObject* referrer, u4 stringIdx)
{
DvmDex* pDvmDex = referrer->pDvmDex;
StringObject* strObj;
StringObject* internStrObj;
const char* utf8;
u4 utf16Size;
LOGVV("+++ resolving string, referrer is %s\n", referrer->descriptor);
/*
* Create a UTF-16 version so we can trivially compare it to what's
* already interned.
*/
utf8 = dexStringAndSizeById(pDvmDex->pDexFile, stringIdx, &utf16Size);
strObj = dvmCreateStringFromCstrAndLength(utf8, utf16Size,
ALLOC_DEFAULT);
if (strObj == NULL) {
/* ran out of space in GC heap? */
assert(dvmCheckException(dvmThreadSelf()));
goto bail;
}
/*
* Add it to the intern list. The return value is the one in the
* intern list, which (due to race conditions) may or may not be
* the one we just created. The intern list is synchronized, so
* there will be only one "live" version.
*
* By requesting an immortal interned string, we guarantee that
* the returned object will never be collected by the GC.
*
* A NULL return here indicates some sort of hashing failure.
*/
internStrObj = dvmLookupImmortalInternedString(strObj);
dvmReleaseTrackedAlloc((Object*) strObj, NULL);
strObj = internStrObj;
if (strObj == NULL) {
assert(dvmCheckException(dvmThreadSelf()));
goto bail;
}
/* save a reference so we can go straight to the object next time */
dvmDexSetResolvedString(pDvmDex, stringIdx, strObj);
bail:
return strObj;
}
/*
* private static String getBootClassPathResource(String name, int index)
*
* Find a resource with a matching name in a boot class path entry.
*
* This mimics the previous VM interface, since we're sharing class libraries.
*/
static void Dalvik_java_lang_VMClassLoader_getBootClassPathResource(
const u4* args, JValue* pResult)
{
StringObject* nameObj = (StringObject*) args[0];
StringObject* result;
int idx = args[1];
char* name;
name = dvmCreateCstrFromString(nameObj);
if (name == NULL)
RETURN_PTR(NULL);
result = dvmGetBootPathResource(name, idx);
free(name);
dvmReleaseTrackedAlloc((Object*)result, NULL);
RETURN_PTR(result);
}
/* Process all enqueued heap work, including finalizers and reference
* enqueueing. Clearing has already been done by the VM.
*
* Caller must hold gDvm.heapWorkerLock.
*/
static void doHeapWork(Thread *self)
{
Object *obj;
HeapWorkerOperation op;
int numFinalizersCalled, numReferencesEnqueued;
assert(gDvm.voffJavaLangObject_finalize >= 0);
assert(gDvm.methJavaLangRefReference_enqueueInternal != NULL);
numFinalizersCalled = 0;
numReferencesEnqueued = 0;
while ((obj = dvmGetNextHeapWorkerObject(&op)) != NULL) {
Method *method = NULL;
/* Make sure the object hasn't been collected since
* being scheduled.
*/
assert(dvmIsValidObject(obj));
/* Call the appropriate method(s).
*/
if (op == WORKER_FINALIZE) {
numFinalizersCalled++;
method = obj->clazz->vtable[gDvm.voffJavaLangObject_finalize];
assert(dvmCompareNameDescriptorAndMethod("finalize", "()V",
method) == 0);
assert(method->clazz != gDvm.classJavaLangObject);
callMethod(self, obj, method);
} else {
assert(op == WORKER_ENQUEUE);
assert(dvmGetFieldObject(
obj, gDvm.offJavaLangRefReference_queue) != NULL);
assert(dvmGetFieldObject(
obj, gDvm.offJavaLangRefReference_queueNext) == NULL);
numReferencesEnqueued++;
callMethod(self, obj,
gDvm.methJavaLangRefReference_enqueueInternal);
}
/* Let the GC collect the object.
*/
dvmReleaseTrackedAlloc(obj, self);
}
LOGV("Called %d finalizers\n", numFinalizersCalled);
LOGV("Enqueued %d references\n", numReferencesEnqueued);
}
/*
* private Object getDefaultValue(Class declaringClass, int slot)
*
* Return the default value for the annotation member represented by
* this Method instance. Returns NULL if none is defined.
*/
static void Dalvik_java_lang_reflect_Method_getDefaultValue(const u4* args,
JValue* pResult)
{
// ignore thisPtr in args[0]
ClassObject* declaringClass = (ClassObject*) args[1];
int slot = args[2];
Method* meth;
/* make sure this is an annotation class member */
if (!dvmIsAnnotationClass(declaringClass))
RETURN_PTR(NULL);
meth = dvmSlotToMethod(declaringClass, slot);
assert(meth != NULL);
Object* def = dvmGetAnnotationDefaultValue(meth);
dvmReleaseTrackedAlloc(def, NULL);
RETURN_PTR(def);
}
/*
* public int constructNative(Object[] args, Class declaringClass,
* Class[] parameterTypes, int slot, boolean noAccessCheck)
*
* We get here through Constructor.newInstance(). The Constructor object
* would not be available if the constructor weren't public (per the
* definition of Class.getConstructor), so we can skip the method access
* check. We can also safely assume the constructor isn't associated
* with an interface, array, or primitive class.
*/
static void Dalvik_java_lang_reflect_Constructor_constructNative(
const u4* args, JValue* pResult)
{
// ignore thisPtr in args[0]
ArrayObject* argList = (ArrayObject*) args[1];
ClassObject* declaringClass = (ClassObject*) args[2];
ArrayObject* params = (ArrayObject*) args[3];
int slot = args[4];
bool noAccessCheck = (args[5] != 0);
Object* newObj;
Method* meth;
if (dvmIsAbstractClass(declaringClass)) {
dvmThrowInstantiationException(declaringClass, NULL);
RETURN_VOID();
}
/* initialize the class if it hasn't been already */
if (!dvmIsClassInitialized(declaringClass)) {
if (!dvmInitClass(declaringClass)) {
ALOGW("Class init failed in Constructor.constructNative (%s)",
declaringClass->descriptor);
assert(dvmCheckException(dvmThreadSelf()));
RETURN_VOID();
}
}
newObj = dvmAllocObject(declaringClass, ALLOC_DEFAULT);
if (newObj == NULL)
RETURN_PTR(NULL);
meth = dvmSlotToMethod(declaringClass, slot);
assert(meth != NULL);
(void) dvmInvokeMethod(newObj, meth, argList, params, NULL, noAccessCheck);
dvmReleaseTrackedAlloc(newObj, NULL);
RETURN_PTR(newObj);
}
/*
* public int constructNative(Object[] args, Class declaringClass,
* Class[] parameterTypes, int slot, boolean noAccessCheck)
*/
static void Dalvik_java_lang_reflect_Constructor_constructNative(
const u4* args, JValue* pResult)
{
// ignore thisPtr in args[0]
ArrayObject* argList = (ArrayObject*) args[1];
ClassObject* declaringClass = (ClassObject*) args[2];
ArrayObject* params = (ArrayObject*) args[3];
int slot = args[4];
bool noAccessCheck = (args[5] != 0);
Object* newObj;
Method* meth;
newObj = dvmAllocObject(declaringClass, ALLOC_DEFAULT);
if (newObj == NULL)
RETURN_PTR(NULL);
meth = dvmSlotToMethod(declaringClass, slot);
assert(meth != NULL);
(void) dvmInvokeMethod(newObj, meth, argList, params, NULL, noAccessCheck);
dvmReleaseTrackedAlloc(newObj, NULL);
RETURN_PTR(newObj);
}