void errno_enum_init(JNIEnv *env) {
if (enum_class != NULL) return;
enum_class = (*env)->FindClass(env, "java/lang/Enum");
PASS_EXCEPTIONS(env);
enum_class = (*env)->NewGlobalRef(env, enum_class);
enum_valueOf = (*env)->GetStaticMethodID(env, enum_class,
"valueOf", "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/Enum;");
PASS_EXCEPTIONS(env);
errno_class = (*env)->FindClass(env, "org/apache/hadoop/io/nativeio/Errno");
PASS_EXCEPTIONS(env);
errno_class = (*env)->NewGlobalRef(env, errno_class);
}
static void stat_init(JNIEnv *env) {
// Init Stat
jclass clazz = (*env)->FindClass(env, "org/apache/hadoop/io/nativeio/NativeIO$Stat");
PASS_EXCEPTIONS(env);
stat_clazz = (*env)->NewGlobalRef(env, clazz);
stat_ctor = (*env)->GetMethodID(env, stat_clazz, "<init>",
"(Ljava/lang/String;Ljava/lang/String;I)V");
}
void fd_init(JNIEnv* env)
{
if (fd_class != NULL) return; // already initted
fd_class = (*env)->FindClass(env, "java/io/FileDescriptor");
PASS_EXCEPTIONS(env);
fd_class = (*env)->NewGlobalRef(env, fd_class);
fd_descriptor = (*env)->GetFieldID(env, fd_class, "fd", "I");
PASS_EXCEPTIONS(env);
#ifdef WINDOWS
fd_handle = (*env)->GetFieldID(env, fd_class, "handle", "J");
PASS_EXCEPTIONS(env);
#endif
fd_constructor = (*env)->GetMethodID(env, fd_class, "<init>", "()V");
}
static void nioe_init(JNIEnv *env) {
// Init NativeIOException
nioe_clazz = (*env)->FindClass(
env, "org/apache/hadoop/io/nativeio/NativeIOException");
PASS_EXCEPTIONS(env);
nioe_clazz = (*env)->NewGlobalRef(env, nioe_clazz);
nioe_ctor = (*env)->GetMethodID(env, nioe_clazz, "<init>",
"(Ljava/lang/String;Lorg/apache/hadoop/io/nativeio/Errno;)V");
}
static void stat_init(JNIEnv *env, jclass nativeio_class) {
// Init Stat
jclass clazz = (*env)->FindClass(env, "org/apache/hadoop/io/nativeio/NativeIO$Stat");
PASS_EXCEPTIONS(env);
stat_clazz = (*env)->NewGlobalRef(env, clazz);
stat_ctor = (*env)->GetMethodID(env, stat_clazz, "<init>",
"(Ljava/lang/String;Ljava/lang/String;IIJ)V");
jclass obj_class = (*env)->FindClass(env, "java/lang/Object");
assert(obj_class != NULL);
jmethodID obj_ctor = (*env)->GetMethodID(env, obj_class,
"<init>", "()V");
assert(obj_ctor != NULL);
if (workaround_non_threadsafe_calls(env, nativeio_class)) {
pw_lock_object = (*env)->NewObject(env, obj_class, obj_ctor);
PASS_EXCEPTIONS(env);
pw_lock_object = (*env)->NewGlobalRef(env, pw_lock_object);
PASS_EXCEPTIONS(env);
}
}
