/*
* static final native String mapLibraryName(String)
*/
_jc_object * _JC_JCNI_ATTR
JCNI_java_lang_VMRuntime_mapLibraryName(_jc_env *env, _jc_object *string)
{
size_t name_len;
char *fname;
char *name;
/* Check for null */
if (string == NULL) {
_jc_post_exception(env, _JC_NullPointerException);
_jc_throw_exception(env);
}
/* Decode string */
name_len = _jc_decode_string_utf8(env, string, NULL);
if ((name = _JC_STACK_ALLOC(env, name_len + 1)) == NULL) {
_jc_post_exception_info(env);
_jc_throw_exception(env);
}
_jc_decode_string_utf8(env, string, name);
/* Format filename */
if ((fname = _JC_FORMAT_STRING(env, _JC_LIBRARY_FMT, name)) == NULL) {
_jc_post_exception_info(env);
_jc_throw_exception(env);
}
/* Create new String object */
if ((string = _jc_new_string(env, fname, strlen(fname))) == NULL)
_jc_throw_exception(env);
/* Done */
return string;
}
/*
* public static final native boolean compileClass(Class)
*/
jboolean _JC_JCNI_ATTR
JCNI_java_lang_VMCompiler_compileClass(_jc_env *env, _jc_object *cl)
{
_jc_jvm *const vm = env->vm;
_jc_type *type;
/* Check for null */
if (cl == NULL) {
_jc_post_exception(env, _JC_NullPointerException);
_jc_throw_exception(env);
}
/* Get type */
type = *_JC_VMFIELD(vm, cl, Class, vmdata, _jc_type *);
_JC_ASSERT(type != NULL);
/* Generate ELF object */
if (_jc_generate_object(env, type->loader, type->name) != JNI_OK)
_jc_throw_exception(env);
return JNI_TRUE;
}
/*
* static final native int nativeLoad(String, ClassLoader)
*/
jint _JC_JCNI_ATTR
JCNI_java_lang_VMRuntime_nativeLoad(_jc_env *env,
_jc_object *string, _jc_object *clobj)
{
_jc_jvm *const vm = env->vm;
_jc_class_loader *loader;
char *filename;
size_t len;
/* Check for null */
if (string == NULL) {
_jc_post_exception(env, _JC_NullPointerException);
_jc_throw_exception(env);
}
/* Convert String to UTF-8 */
len = _jc_decode_string_utf8(env, string, NULL);
if ((filename = _JC_STACK_ALLOC(env, len + 1)) == NULL) {
_jc_post_exception_info(env);
_jc_throw_exception(env);
}
_jc_decode_string_utf8(env, string, filename);
/* Get class loader */
if (clobj == NULL)
loader = vm->boot.loader;
else if ((loader = _jc_get_loader(env, clobj)) == NULL)
_jc_throw_exception(env);
/* Open native library */
if (_jc_load_native_library(env, loader, filename) != JNI_OK) {
_jc_post_exception_info(env);
_jc_throw_exception(env);
}
/* OK */
return 1;
}
/*
* Find the internal _jc_class_loader structure corresponding to
* a ClassLoader object. Create one if it doesn't already exist,
* but do so atomically.
*
* Posts an exception on failure.
*/
_jc_class_loader *
_jc_get_loader(_jc_env *env, _jc_object *obj)
{
_jc_jvm *const vm = env->vm;
jboolean vm_locked = JNI_FALSE;
_jc_class_loader *loader;
_jc_resolve_info info;
/* Check for null */
if (obj == NULL) {
_jc_post_exception(env, _JC_NullPointerException);
return NULL;
}
_JC_ASSERT(_jc_subclass_of(obj, vm->boot.types.ClassLoader));
/* Lock VM */
_JC_MUTEX_LOCK(env, vm->mutex);
vm_locked = JNI_TRUE;
/* See if loader structure already exists */
if ((loader = _jc_get_vm_pointer(vm, obj,
vm->boot.fields.ClassLoader.vmdata)) != NULL)
goto done;
/* Create a new loader structure */
if ((loader = _jc_create_loader(env)) == NULL) {
_jc_post_exception_info(env);
goto done;
}
loader->instance = obj;
/* Set the ClassLoader.vmdata field */
if (_jc_set_vm_pointer(env, obj,
vm->boot.fields.ClassLoader.vmdata, loader) != JNI_OK) {
_jc_destroy_loader(vm, &loader);
goto done;
}
/* Unlock VM */
_JC_MUTEX_UNLOCK(env, vm->mutex);
vm_locked = JNI_FALSE;
/* Create reference list with one reference */
memset(&info, 0, sizeof(info));
info.loader = loader,
info.implicit_refs = &loader->instance;
info.num_implicit_refs = 1;
/* Put ClassLoader object on implicit reference list */
if (_jc_merge_implicit_refs(env, &info) != JNI_OK) {
_jc_destroy_loader(vm, &loader);
_jc_post_exception_info(env);
goto done;
}
done:
/* Unlock VM */
if (vm_locked)
_JC_MUTEX_UNLOCK(env, vm->mutex);
/* Done */
return loader;
}
