Array* rvmAllocateMemoryForArray(Env* env, Class* arrayClass, jint length) {
jint elementSize = rvmGetArrayElementSize(env, arrayClass);
if (elementSize == 0) {
return NULL;
}
jlong size = (jlong) sizeof(Array) + (jlong) length * (jlong) elementSize;
if (size > (jlong) (size_t) -1) {
rvmThrowOutOfMemoryError(env);
return NULL;
}
Array* m = NULL;
if (CLASS_IS_PRIMITIVE(arrayClass->componentType)) {
// Primitive array objects contain no pointers except for the Class
// pointer and possibly a fat monitor. Those are allocated uncollectably
// and will be reachable even if we alocate this atomically.
m = (Array*) gcAllocateKind((size_t) size, atomicObjectGCKind);
} else if (length < 30) {
// TODO: Use GC bitmap descriptor for small Object arrays.
m = (Array*) gcAllocateKind((size_t) size, objectGCKind);
} else {
// Large Object array. Conservatively scanned. Only the lock (if thin)
// and the length fields could become a problem if they look like
// pointers into the heap.
m = (Array*) gcAllocateKind((size_t) size, largeArrayGCKind);
}
if (!m) {
rvmThrowOutOfMemoryError(env);
return NULL;
}
return m;
}
Object* rvmAllocateMemoryForObject(Env* env, Class* clazz) {
Object* m = NULL;
if (CLASS_IS_FINALIZABLE(clazz) || CLASS_IS_REFERENCE(clazz)
|| (clazz->superclass && clazz->superclass == org_robovm_rt_bro_Struct)
|| (clazz->superclass && clazz->superclass == java_nio_MemoryBlock)
|| (clazz == java_nio_MemoryBlock)) {
// These types of objects must be marked specially. We could probably
// do this using GC bitmap descriptors instead. Also instances of
// java.lang.Throwable must be marked specially but it has at least 1
// reference field and will thus not be allocated atomically.
m = (Object*) gcAllocateKind(clazz->instanceDataSize, objectGCKind);
} else if (CLASS_IS_REF_FREE(clazz)) {
// Objects with 0 instance reference fields contain no pointers except for the Class
// pointer and possibly a fat monitor. Those are allocated uncollectably
// and will be reachable even if we alocate this atomically.
m = (Object*) gcAllocateKind(clazz->instanceDataSize, atomicObjectGCKind);
} else {
// TODO: Use GC bitmap descriptors for small Objects.
m = (Object*) gcAllocateKind(clazz->instanceDataSize, objectGCKind);
}
if (!m) {
if (clazz == java_lang_OutOfMemoryError) {
// We can't even allocate an OutOfMemoryError object. Prevent
// infinite recursion by returning the shared criticalOutOfMemoryError
// object.
return criticalOutOfMemoryError;
}
rvmThrowOutOfMemoryError(env);
return NULL;
}
return m;
}
void* rvmAllocateMemoryAtomic(Env* env, jint size) {
void* m = gcAllocateAtomic(size);
if (!m) {
rvmThrowOutOfMemoryError(env);
return NULL;
}
return m;
}
void* rvmAllocateMemoryUncollectable(Env* env, jint size) {
void* m = gcAllocateUncollectable(size);
if (!m) {
rvmThrowOutOfMemoryError(env);
return NULL;
}
return m;
}
void* rvmSaveSignals(Env* env) {
SavedSignals* state = malloc(sizeof(SavedSignals));
if (!state) {
rvmThrowOutOfMemoryError(env);
return NULL;
}
return state;
}
void* rvmAllocateMemory(Env* env, size_t size) {
void* m = gcAllocate(size);
if (!m) {
rvmThrowOutOfMemoryError(env);
return NULL;
}
return m;
}
void* allocateMemoryOfKind(Env* env, size_t size, uint32_t kind) {
void* m = gcAllocateKind(size, kind);
if (!m) {
rvmThrowOutOfMemoryError(env);
return NULL;
}
return m;
}
Class* rvmAllocateMemoryForClass(Env* env, jint classDataSize) {
Class* m = (Class*) gcAllocateKind(classDataSize, objectGCKind);
if (!m) {
rvmThrowOutOfMemoryError(env);
return NULL;
}
return m;
}
jlong rvmStartThread(Env* env, JavaThread* threadObj) {
Env* newEnv = rvmCreateEnv(env->vm);
if (!newEnv) {
rvmThrowOutOfMemoryError(env); // rvmCreateEnv() doesn't throw OutOfMemoryError if allocation fails
return 0;
}
rvmLockThreadsList();
if (threadObj->threadPtr != 0) {
rvmThrowIllegalStateException(env, "thread has already been started");
rvmUnlockThreadsList();
return 0;
}
Thread* thread = allocThread(env);
if (!thread) {
rvmUnlockThreadsList();
return 0;
}
size_t stackSize = (size_t) threadObj->stackSize;
if (stackSize == 0) {
stackSize = THREAD_DEFAULT_STACK_SIZE;
} else if (stackSize < THREAD_MIN_STACK_SIZE) {
stackSize = THREAD_MIN_STACK_SIZE;
}
stackSize += THREAD_SIGNAL_STACK_SIZE;
stackSize = (stackSize + THREAD_STACK_SIZE_MULTIPLE - 1) & ~(THREAD_STACK_SIZE_MULTIPLE - 1);
pthread_attr_t threadAttr;
pthread_attr_init(&threadAttr);
pthread_attr_setdetachstate(&threadAttr, PTHREAD_CREATE_DETACHED);
pthread_attr_setstacksize(&threadAttr, stackSize);
pthread_attr_setguardsize(&threadAttr, THREAD_STACK_GUARD_SIZE);
ThreadEntryPointArgs args = {0};
args.env = newEnv;
args.thread = thread;
args.threadObj = threadObj;
int err = 0;
if ((err = pthread_create(&thread->pThread, &threadAttr, startThreadEntryPoint, &args)) != 0) {
rvmUnlockThreadsList();
rvmThrowInternalErrorErrno(env, err);
return 0;
}
while (thread->status != THREAD_STARTING) {
pthread_cond_wait(&threadStartCond, &threadsLock);
}
DL_PREPEND(threads, thread);
pthread_cond_broadcast(&threadsChangedCond);
thread->status = THREAD_VMWAIT;
pthread_cond_broadcast(&threadStartCond);
rvmUnlockThreadsList();
return PTR_TO_LONG(thread);
}
jlong Java_aura_rt_VM_malloc(Env* env, Class* c, jint size) {
void* m = malloc(size);
if (!m) {
rvmThrowOutOfMemoryError(env);
return 0;
}
memset(m, 0, size);
return PTR_TO_LONG(m);
}
ObjectArray* Java_java_net_NetworkInterface_getInterfaceNames(Env* env, JClass* cls) {
if (!java_lang_String_array) {
java_lang_String_array = rvmFindClassUsingLoader(env, "[Ljava/lang/String;", NULL);
if (!java_lang_String_array) {
return NULL;
}
}
struct if_nameindex* ifs = if_nameindex();
if (!ifs) {
// Assume out of memory
rvmThrowOutOfMemoryError(env);
return NULL;
}
jint count = 0;
while (ifs[count].if_index > 0) {
count++;
}
ObjectArray* result = rvmNewObjectArray(env, count, NULL, java_lang_String_array, NULL);
if (!result) {
goto done;
}
jint i = 0;
for (i = 0; i < count; i++) {
Object* name = rvmNewStringUTF(env, ifs[i].if_name, -1);
if (!name) {
goto done;
}
result->values[i] = name;
}
done:
if_freenameindex(ifs);
return result;
}