2014-02-15 22:26:36 +01:00
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/*
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* Copyright 2013 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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#include <jni.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/epoll.h>
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#include <sys/eventfd.h>
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#include <sys/sendfile.h>
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#include <netinet/tcp.h>
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#include <netinet/in.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#include <fcntl.h>
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#include "io_netty_channel_epoll_Native.h"
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// optional
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extern int accept4(int sockFd, struct sockaddr *addr, socklen_t *addrlen, int flags) __attribute__((weak));
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// Those are initialized in the init(...) method and cached for performance reasons
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2014-02-17 07:18:39 +01:00
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jmethodID updatePosId = NULL;
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2014-02-15 22:26:36 +01:00
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jmethodID posId = NULL;
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jmethodID limitId = NULL;
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jfieldID posFieldId = NULL;
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jfieldID limitFieldId = NULL;
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jfieldID fileChannelFieldId = NULL;
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jfieldID transferedFieldId = NULL;
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jfieldID fdFieldId = NULL;
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jfieldID fileDescriptorFieldId = NULL;
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2014-02-18 10:08:20 +01:00
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jfieldID readerIndexFieldId = NULL;
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jfieldID writerIndexFieldId = NULL;
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jfieldID memoryAddressFieldId = NULL;
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2014-02-15 22:26:36 +01:00
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jmethodID inetSocketAddrMethodId = NULL;
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jclass runtimeExceptionClass = NULL;
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jclass ioExceptionClass = NULL;
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jclass closedChannelExceptionClass = NULL;
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jmethodID closedChannelExceptionMethodId = NULL;
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jclass inetSocketAddressClass = NULL;
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static int socketType;
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// util methods
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void throwRuntimeException(JNIEnv *env, char *message) {
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(*env)->ThrowNew(env, runtimeExceptionClass, message);
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}
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void throwIOException(JNIEnv *env, char *message) {
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(*env)->ThrowNew(env, ioExceptionClass, message);
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}
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void throwClosedChannelException(JNIEnv *env) {
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jobject exception = (*env)->NewObject(env, closedChannelExceptionClass, closedChannelExceptionMethodId);
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(*env)->Throw(env, exception);
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}
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void throwOutOfMemoryError( JNIEnv *env, char *message) {
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jclass exceptionClass = (*env)->FindClass(env, "java/lang/OutOfMemoryError");
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(*env)->ThrowNew(env, exceptionClass, message);
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}
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char *exceptionMessage(char *msg, int error) {
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char *err = strerror(error);
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char *result = malloc(strlen(msg) + strlen(err) + 1);
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strcpy(result, msg);
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strcat(result, err);
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return result;
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}
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jint epollCtl(JNIEnv * env, jint efd, int op, jint fd, jint flags, jint id) {
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uint32_t events = EPOLLET;
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if (flags & EPOLL_ACCEPT) {
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events |= EPOLLIN;
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}
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if (flags & EPOLL_READ) {
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events |= EPOLLIN | EPOLLRDHUP;
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}
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if (flags & EPOLL_WRITE) {
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events |= EPOLLOUT;
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}
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struct epoll_event ev = {
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.events = events,
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// encode the id into the events
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.data.u64 = (((uint64_t) id) << 32L)
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};
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return epoll_ctl(efd, op, fd, &ev);
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}
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jint getOption(JNIEnv *env, jint fd, int level, int optname, const void *optval, socklen_t optlen) {
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int code;
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code = getsockopt(fd, level, optname, &optval, &optlen);
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if (code == 0) {
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return 0;
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}
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int err = errno;
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throwRuntimeException(env, exceptionMessage("Error during getsockopt(...): ", err));
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return code;
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}
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int setOption(JNIEnv *env, jint fd, int level, int optname, const void *optval, socklen_t len) {
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int rc = setsockopt(fd, level, optname, optval, len);
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if (rc < 0) {
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int err = errno;
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throwRuntimeException(env, exceptionMessage("Error during setsockopt(...): ", err));
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}
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return rc;
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}
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jobject createInetSocketAddress(JNIEnv * env, struct sockaddr_storage addr) {
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char ipstr[INET6_ADDRSTRLEN];
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int port;
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if (addr.ss_family == AF_INET) {
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struct sockaddr_in *s = (struct sockaddr_in *)&addr;
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port = ntohs(s->sin_port);
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inet_ntop(AF_INET, &s->sin_addr, ipstr, sizeof ipstr);
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} else {
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struct sockaddr_in6 *s = (struct sockaddr_in6 *)&addr;
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port = ntohs(s->sin6_port);
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inet_ntop(AF_INET6, &s->sin6_addr, ipstr, sizeof ipstr);
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}
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2014-02-17 11:59:28 +01:00
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jstring ipString = (*env)->NewStringUTF(env, ipstr);
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jobject socketAddr = (*env)->NewObject(env, inetSocketAddressClass, inetSocketAddrMethodId, ipString, port);
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2014-02-15 22:26:36 +01:00
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return socketAddr;
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}
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void init_sockaddr(JNIEnv * env, jbyteArray address, jint scopeId, jint jport, struct sockaddr_storage * addr) {
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uint16_t port = htons((uint16_t) jport);
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jbyte* addressBytes = (*env)->GetByteArrayElements(env, address, 0);
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if (socketType == AF_INET6) {
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struct sockaddr_in6* ip6addr = (struct sockaddr_in6 *) addr;
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ip6addr->sin6_family = AF_INET6;
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ip6addr->sin6_port = port;
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if (scopeId != 0) {
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ip6addr->sin6_scope_id = (uint32_t) scopeId;
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}
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memcpy( &(ip6addr->sin6_addr.s6_addr), addressBytes, 16);
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} else {
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struct sockaddr_in* ipaddr = (struct sockaddr_in *) addr;
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ipaddr->sin_family = AF_INET;
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ipaddr->sin_port = port;
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memcpy( &(ipaddr->sin_addr.s_addr), addressBytes + 12, 4);
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}
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(*env)->ReleaseByteArrayElements(env, address, addressBytes, JNI_ABORT);
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}
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static int socket_type() {
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int fd = socket(AF_INET6, SOCK_STREAM | SOCK_NONBLOCK, 0);
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if (fd == -1) {
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if (errno == EAFNOSUPPORT) {
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return AF_INET;
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}
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return AF_INET6;
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} else {
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close(fd);
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return AF_INET6;
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}
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}
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// util methods end
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jint JNI_OnLoad(JavaVM* vm, void* reserved) {
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JNIEnv* env;
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if ((*vm)->GetEnv(vm, (void **) &env, JNI_VERSION_1_6) != JNI_OK) {
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return JNI_ERR;
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} else {
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// cache classes that are used within other jni methods for performance reasons
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jclass localClosedChannelExceptionClass = (*env)->FindClass(env, "java/nio/channels/ClosedChannelException");
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if (localClosedChannelExceptionClass == NULL) {
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// pending exception...
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return JNI_ERR;
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}
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closedChannelExceptionClass = (jclass) (*env)->NewGlobalRef(env, localClosedChannelExceptionClass);
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if (closedChannelExceptionClass == NULL) {
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// out-of-memory!
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throwOutOfMemoryError(env, "Error allocating memory");
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return JNI_ERR;
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}
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closedChannelExceptionMethodId = (*env)->GetMethodID(env, closedChannelExceptionClass, "<init>", "()V");
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if (closedChannelExceptionMethodId == NULL) {
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throwRuntimeException(env, "Unable to obtain constructor of ClosedChannelException");
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return JNI_ERR;
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}
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jclass localRuntimeExceptionClass = (*env)->FindClass(env, "java/lang/RuntimeException");
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if (localRuntimeExceptionClass == NULL) {
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// pending exception...
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return JNI_ERR;
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}
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runtimeExceptionClass = (jclass) (*env)->NewGlobalRef(env, localRuntimeExceptionClass);
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if (runtimeExceptionClass == NULL) {
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// out-of-memory!
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throwOutOfMemoryError(env, "Error allocating memory");
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return JNI_ERR;
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}
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jclass localIoExceptionClass = (*env)->FindClass(env, "java/io/IOException");
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if (localIoExceptionClass == NULL) {
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// pending exception...
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return JNI_ERR;
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}
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ioExceptionClass = (jclass) (*env)->NewGlobalRef(env, localIoExceptionClass);
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if (ioExceptionClass == NULL) {
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// out-of-memory!
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throwOutOfMemoryError(env, "Error allocating memory");
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return JNI_ERR;
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}
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jclass localInetSocketAddressClass = (*env)->FindClass(env, "java/net/InetSocketAddress");
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if (localIoExceptionClass == NULL) {
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// pending exception...
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return JNI_ERR;
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}
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inetSocketAddressClass = (jclass) (*env)->NewGlobalRef(env, localInetSocketAddressClass);
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if (inetSocketAddressClass == NULL) {
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// out-of-memory!
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throwOutOfMemoryError(env, "Error allocating memory");
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return JNI_ERR;
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}
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void *mem = malloc(1);
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if (mem == NULL) {
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throwOutOfMemoryError(env, "Error allocating native buffer");
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return JNI_ERR;
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}
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jobject directBuffer = (*env)->NewDirectByteBuffer(env, mem, 1);
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if (directBuffer == NULL) {
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throwOutOfMemoryError(env, "Error allocating native buffer");
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return JNI_ERR;
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}
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jclass cls = (*env)->GetObjectClass(env, directBuffer);
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// Get the method id for Buffer.position() and Buffer.limit(). These are used as fallback if
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// it is not possible to obtain the position and limit using the fields directly.
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posId = (*env)->GetMethodID(env, cls, "position", "()I");
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if (posId == NULL) {
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// position method was not found.. something is wrong so bail out
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throwRuntimeException(env, "Unable to find method ByteBuffer.position()");
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return JNI_ERR;
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}
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limitId = (*env)->GetMethodID(env, cls, "limit", "()I");
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if (limitId == NULL) {
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// limit method was not found.. something is wrong so bail out
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throwRuntimeException(env, "Unable to find method ByteBuffer.limit()");
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return JNI_ERR;
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}
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2014-02-17 07:18:39 +01:00
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updatePosId = (*env)->GetMethodID(env, cls, "position", "(I)Ljava/nio/Buffer;");
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if (updatePosId == NULL) {
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// position method was not found.. something is wrong so bail out
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throwRuntimeException(env, "Unable to find method ByteBuffer.position(int)");
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return JNI_ERR;
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}
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2014-02-15 22:26:36 +01:00
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// Try to get the ids of the position and limit fields. We later then check if we was able
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// to find them and if so use them get the position and limit of the buffer. This is
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// much faster then call back into java via (*env)->CallIntMethod(...).
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posFieldId = (*env)->GetFieldID(env, cls, "position", "I");
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if (posFieldId == NULL) {
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// this is ok as we can still use the method so just clear the exception
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(*env)->ExceptionClear(env);
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}
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limitFieldId = (*env)->GetFieldID(env, cls, "limit", "I");
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if (limitFieldId == NULL) {
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// this is ok as we can still use the method so just clear the exception
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(*env)->ExceptionClear(env);
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}
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jclass fileRegionCls = (*env)->FindClass(env, "io/netty/channel/DefaultFileRegion");
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if (fileRegionCls == NULL) {
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// pending exception...
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return JNI_ERR;
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}
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fileChannelFieldId = (*env)->GetFieldID(env, fileRegionCls, "file", "Ljava/nio/channels/FileChannel;");
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if (fileChannelFieldId == NULL) {
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throwRuntimeException(env, "Unable to obtain FileChannel field for DefaultFileRegion");
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return JNI_ERR;
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}
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transferedFieldId = (*env)->GetFieldID(env, fileRegionCls, "transfered", "J");
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if (transferedFieldId == NULL) {
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throwRuntimeException(env, "Unable to obtain transfered field for DefaultFileRegion");
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return JNI_ERR;
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}
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jclass fileChannelCls = (*env)->FindClass(env, "sun/nio/ch/FileChannelImpl");
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if (fileChannelCls == NULL) {
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// pending exception...
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return JNI_ERR;
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}
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fileDescriptorFieldId = (*env)->GetFieldID(env, fileChannelCls, "fd", "Ljava/io/FileDescriptor;");
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if (fileDescriptorFieldId == NULL) {
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throwRuntimeException(env, "Unable to obtain fd field for FileChannelImpl");
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return JNI_ERR;
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}
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jclass fileDescriptorCls = (*env)->FindClass(env, "java/io/FileDescriptor");
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if (fileDescriptorCls == NULL) {
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// pending exception...
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return JNI_ERR;
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}
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fdFieldId = (*env)->GetFieldID(env, fileDescriptorCls, "fd", "I");
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if (fdFieldId == NULL) {
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throwRuntimeException(env, "Unable to obtain fd field for FileDescriptor");
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return JNI_ERR;
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}
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inetSocketAddrMethodId = (*env)->GetMethodID(env, inetSocketAddressClass, "<init>", "(Ljava/lang/String;I)V");
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if (inetSocketAddrMethodId == NULL) {
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throwRuntimeException(env, "Unable to obtain constructor of InetSocketAddress");
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return JNI_ERR;
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}
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socketType = socket_type();
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2014-02-18 10:08:20 +01:00
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jclass addressEntryClass = (*env)->FindClass(env, "io/netty/channel/epoll/EpollChannelOutboundBuffer$AddressEntry");
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if (addressEntryClass == NULL) {
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// pending exception...
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return JNI_ERR;
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}
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readerIndexFieldId = (*env)->GetFieldID(env, addressEntryClass, "readerIndex", "I");
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if (readerIndexFieldId == NULL) {
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// pending exception...
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return JNI_ERR;
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}
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|
writerIndexFieldId = (*env)->GetFieldID(env, addressEntryClass, "writerIndex", "I");
|
|
|
|
if (writerIndexFieldId == NULL) {
|
|
|
|
// pending exception...
|
|
|
|
return JNI_ERR;
|
|
|
|
}
|
|
|
|
memoryAddressFieldId = (*env)->GetFieldID(env, addressEntryClass, "memoryAddress", "J");
|
|
|
|
if (memoryAddressFieldId == NULL) {
|
|
|
|
// pending exception...
|
|
|
|
return JNI_ERR;
|
|
|
|
}
|
2014-02-15 22:26:36 +01:00
|
|
|
return JNI_VERSION_1_6;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void JNI_OnUnload(JavaVM *vm, void *reserved) {
|
|
|
|
JNIEnv* env;
|
|
|
|
if ((*vm)->GetEnv(vm, (void **) &env, JNI_VERSION_1_6) != JNI_OK) {
|
|
|
|
// Something is wrong but nothing we can do about this :(
|
|
|
|
return;
|
|
|
|
} else {
|
|
|
|
// delete global references so the GC can collect them
|
|
|
|
if (runtimeExceptionClass != NULL) {
|
|
|
|
(*env)->DeleteGlobalRef(env, runtimeExceptionClass);
|
|
|
|
}
|
|
|
|
if (ioExceptionClass != NULL) {
|
|
|
|
(*env)->DeleteGlobalRef(env, ioExceptionClass);
|
|
|
|
}
|
|
|
|
if (closedChannelExceptionClass != NULL) {
|
|
|
|
(*env)->DeleteGlobalRef(env, closedChannelExceptionClass);
|
|
|
|
}
|
|
|
|
if (inetSocketAddressClass != NULL) {
|
|
|
|
(*env)->DeleteGlobalRef(env, inetSocketAddressClass);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_eventFd(JNIEnv * env, jclass clazz) {
|
|
|
|
jint eventFD = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
|
|
|
|
|
|
|
|
if (eventFD < 0) {
|
|
|
|
int err = errno;
|
|
|
|
throwRuntimeException(env, exceptionMessage("Error creating eventFD(...): ", err));
|
|
|
|
}
|
|
|
|
return eventFD;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_eventFdWrite(JNIEnv * env, jclass clazz, jint fd, jlong value) {
|
|
|
|
jint eventFD = eventfd_write(fd, (eventfd_t)value);
|
|
|
|
|
|
|
|
if (eventFD < 0) {
|
|
|
|
int err = errno;
|
|
|
|
throwRuntimeException(env, exceptionMessage("Error calling eventfd_write(...): ", err));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_eventFdRead(JNIEnv * env, jclass clazz, jint fd) {
|
|
|
|
uint64_t eventfd_t;
|
|
|
|
|
|
|
|
if (eventfd_read(fd, &eventfd_t) != 0) {
|
|
|
|
// something is serious wrong
|
|
|
|
throwRuntimeException(env, "Error calling eventfd_read(...)");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_epollCreate(JNIEnv * env, jclass clazz) {
|
|
|
|
jint efd = epoll_create1(EPOLL_CLOEXEC);
|
|
|
|
if (efd < 0) {
|
|
|
|
int err = errno;
|
|
|
|
throwRuntimeException(env, exceptionMessage("Error during epoll_create(...): ", err));
|
|
|
|
}
|
|
|
|
return efd;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_epollWait(JNIEnv * env, jclass clazz, jint efd, jlongArray events, jint timeout) {
|
|
|
|
int len = (*env)->GetArrayLength(env, events);
|
|
|
|
struct epoll_event ev[len];
|
|
|
|
int ready;
|
|
|
|
int err;
|
|
|
|
do {
|
|
|
|
ready = epoll_wait(efd, ev, len, timeout);
|
|
|
|
// was interrupted try again.
|
|
|
|
} while (ready == -1 && (( err = errno) == EINTR));
|
|
|
|
|
|
|
|
if (ready < 0) {
|
|
|
|
throwIOException(env, exceptionMessage("Error during epoll_wait(...): ", err));
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (ready == 0) {
|
|
|
|
// nothing ready for process
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
jboolean isCopy;
|
|
|
|
jlong *elements = (*env)->GetLongArrayElements(env, events, &isCopy);
|
|
|
|
if (elements == NULL) {
|
|
|
|
// No memory left ?!?!?
|
|
|
|
throwOutOfMemoryError(env, "Can't allocate memory");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < ready; i++) {
|
|
|
|
// store the ready ops and id
|
|
|
|
elements[i] = (jlong) ev[i].data.u64;
|
|
|
|
if (ev[i].events & EPOLLIN) {
|
|
|
|
elements[i] |= EPOLL_READ;
|
|
|
|
}
|
|
|
|
if (ev[i].events & EPOLLRDHUP) {
|
|
|
|
elements[i] |= EPOLL_RDHUP;
|
|
|
|
}
|
|
|
|
if (ev[i].events & EPOLLOUT) {
|
|
|
|
elements[i] |= EPOLL_WRITE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
jint mode;
|
|
|
|
// release again to prevent memory leak
|
|
|
|
if (isCopy) {
|
|
|
|
mode = 0;
|
|
|
|
} else {
|
|
|
|
// was just pinned so use JNI_ABORT to eliminate not needed copy.
|
|
|
|
mode = JNI_ABORT;
|
|
|
|
}
|
|
|
|
(*env)->ReleaseLongArrayElements(env, events, elements, mode);
|
|
|
|
|
|
|
|
return ready;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_epollCtlAdd(JNIEnv * env, jclass clazz, jint efd, jint fd, jint flags, jint id) {
|
|
|
|
if (epollCtl(env, efd, EPOLL_CTL_ADD, fd, flags, id) < 0) {
|
|
|
|
int err = errno;
|
|
|
|
throwRuntimeException(env, exceptionMessage("Error during calling epoll_ctl(...): ", err));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_epollCtlMod(JNIEnv * env, jclass clazz, jint efd, jint fd, jint flags, jint id) {
|
|
|
|
if (epollCtl(env, efd, EPOLL_CTL_MOD, fd, flags, id) < 0) {
|
|
|
|
int err = errno;
|
|
|
|
throwRuntimeException(env, exceptionMessage("Error during calling epoll_ctl(...): ", err));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_epollCtlDel(JNIEnv * env, jclass clazz, jint efd, jint fd) {
|
|
|
|
// Create an empty event to workaround a bug in older kernels which can not handle NULL.
|
|
|
|
struct epoll_event event = { 0 };
|
|
|
|
if (epoll_ctl(efd, EPOLL_CTL_DEL, fd, &event) < 0) {
|
|
|
|
int err = errno;
|
|
|
|
throwRuntimeException(env, exceptionMessage("Error during calling epoll_ctl(...): ", err));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-02-17 15:19:01 +01:00
|
|
|
|
|
|
|
jint write0(JNIEnv * env, jclass clazz, jint fd, void *buffer, jint pos, jint limit) {
|
2014-02-15 22:26:36 +01:00
|
|
|
ssize_t res;
|
|
|
|
int err;
|
|
|
|
do {
|
|
|
|
res = write(fd, buffer + pos, (size_t) (limit - pos));
|
|
|
|
// keep on writing if it was interrupted
|
|
|
|
} while(res == -1 && ((err = errno) == EINTR));
|
|
|
|
|
|
|
|
if (res < 0) {
|
|
|
|
// network stack saturated... try again later
|
|
|
|
if (err == EAGAIN || err == EWOULDBLOCK) {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (err == EBADF) {
|
|
|
|
throwClosedChannelException(env);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
throwIOException(env, exceptionMessage("Error while write(...): ", err));
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return (jint) res;
|
|
|
|
}
|
|
|
|
|
2014-02-17 15:19:01 +01:00
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_write(JNIEnv * env, jclass clazz, jint fd, jobject jbuffer, jint pos, jint limit) {
|
|
|
|
void *buffer = (*env)->GetDirectBufferAddress(env, jbuffer);
|
|
|
|
if (buffer == NULL) {
|
|
|
|
throwRuntimeException(env, "Unable to access address of buffer");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return write0(env, clazz, fd, buffer, pos, limit);
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_writeAddress(JNIEnv * env, jclass clazz, jint fd, jlong address, jint pos, jint limit) {
|
|
|
|
return write0(env, clazz, fd, (void *) address, pos, limit);
|
|
|
|
}
|
|
|
|
|
2014-02-17 07:18:39 +01:00
|
|
|
void incrementPosition(JNIEnv * env, jobject bufObj, int written) {
|
|
|
|
// Get the current position using the (*env)->GetIntField if possible and fallback
|
|
|
|
// to slower (*env)->CallIntMethod(...) if needed
|
|
|
|
if (posFieldId == NULL) {
|
|
|
|
jint pos = (*env)->CallIntMethod(env, bufObj, posId, NULL);
|
|
|
|
(*env)->CallObjectMethod(env, bufObj, updatePosId, pos + written);
|
|
|
|
} else {
|
|
|
|
jint pos = (*env)->GetIntField(env, bufObj, posFieldId);
|
|
|
|
(*env)->SetIntField(env, bufObj, posFieldId, pos + written);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-02-18 10:08:20 +01:00
|
|
|
jlong writev0(JNIEnv * env, jclass clazz, jint fd, struct iovec iov[], jint length) {
|
|
|
|
ssize_t res;
|
|
|
|
int err;
|
|
|
|
do {
|
|
|
|
res = writev(fd, iov, length);
|
|
|
|
// keep on writing if it was interrupted
|
|
|
|
} while(res == -1 && ((err = errno) == EINTR));
|
|
|
|
|
|
|
|
if (res < 0) {
|
|
|
|
if (err == EAGAIN || err == EWOULDBLOCK) {
|
|
|
|
// network stack is saturated we will try again later
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (err == EBADF) {
|
|
|
|
throwClosedChannelException(env);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
throwIOException(env, exceptionMessage("Error while writev(...): ", err));
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return (jlong) res;
|
|
|
|
}
|
|
|
|
|
2014-02-15 22:26:36 +01:00
|
|
|
JNIEXPORT jlong JNICALL Java_io_netty_channel_epoll_Native_writev(JNIEnv * env, jclass clazz, jint fd, jobjectArray buffers, jint offset, jint length) {
|
|
|
|
struct iovec iov[length];
|
|
|
|
int i;
|
|
|
|
int iovidx = 0;
|
|
|
|
for (i = offset; i < length; i++) {
|
|
|
|
jobject bufObj = (*env)->GetObjectArrayElement(env, buffers, i);
|
|
|
|
jint pos;
|
|
|
|
// Get the current position using the (*env)->GetIntField if possible and fallback
|
|
|
|
// to slower (*env)->CallIntMethod(...) if needed
|
|
|
|
if (posFieldId == NULL) {
|
|
|
|
pos = (*env)->CallIntMethod(env, bufObj, posId, NULL);
|
|
|
|
} else {
|
|
|
|
pos = (*env)->GetIntField(env, bufObj, posFieldId);
|
|
|
|
}
|
|
|
|
jint limit;
|
|
|
|
// Get the current limit using the (*env)->GetIntField if possible and fallback
|
|
|
|
// to slower (*env)->CallIntMethod(...) if needed
|
|
|
|
if (limitFieldId == NULL) {
|
|
|
|
limit = (*env)->CallIntMethod(env, bufObj, limitId, NULL);
|
|
|
|
} else {
|
|
|
|
limit = (*env)->GetIntField(env, bufObj, limitFieldId);
|
|
|
|
}
|
|
|
|
void *buffer = (*env)->GetDirectBufferAddress(env, bufObj);
|
|
|
|
if (buffer == NULL) {
|
|
|
|
throwRuntimeException(env, "Unable to access address of buffer");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
iov[iovidx].iov_base = buffer + pos;
|
|
|
|
iov[iovidx].iov_len = (size_t) (limit - pos);
|
|
|
|
iovidx++;
|
|
|
|
}
|
2014-02-18 10:08:20 +01:00
|
|
|
jlong res = writev0(env, clazz, fd, iov, length);
|
|
|
|
if (res <= 0) {
|
|
|
|
return res;
|
2014-02-15 22:26:36 +01:00
|
|
|
}
|
2014-02-17 07:18:39 +01:00
|
|
|
|
|
|
|
// update the position of the written buffers
|
|
|
|
int written = res;
|
|
|
|
int a;
|
|
|
|
for (a = 0; a < length; a++) {
|
|
|
|
int len = iov[a].iov_len;
|
|
|
|
jobject bufObj = (*env)->GetObjectArrayElement(env, buffers, a + offset);
|
|
|
|
if (len >= written) {
|
|
|
|
incrementPosition(env, bufObj, written);
|
|
|
|
break;
|
|
|
|
} else {
|
|
|
|
incrementPosition(env, bufObj, len);
|
|
|
|
written -= len;
|
|
|
|
}
|
|
|
|
}
|
2014-02-15 22:26:36 +01:00
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
2014-02-18 10:08:20 +01:00
|
|
|
JNIEXPORT jlong JNICALL Java_io_netty_channel_epoll_Native_writevAddresses(JNIEnv * env, jclass clazz, jint fd, jobjectArray addresses, jint offset, jint length) {
|
|
|
|
struct iovec iov[length];
|
|
|
|
int i;
|
|
|
|
int iovidx = 0;
|
|
|
|
for (i = offset; i < length; i++) {
|
|
|
|
jobject addressEntry = (*env)->GetObjectArrayElement(env, addresses, i);
|
|
|
|
jint readerIndex = (*env)->GetIntField(env, addressEntry, readerIndexFieldId);
|
|
|
|
jint writerIndex = (*env)->GetIntField(env, addressEntry, writerIndexFieldId);
|
|
|
|
void* memoryAddress = (void*) (*env)->GetLongField(env, addressEntry, memoryAddressFieldId);
|
|
|
|
|
|
|
|
iov[iovidx].iov_base = memoryAddress + readerIndex;
|
|
|
|
iov[iovidx].iov_len = (size_t) (writerIndex - readerIndex);
|
|
|
|
iovidx++;
|
|
|
|
}
|
|
|
|
|
|
|
|
jlong res = writev0(env, clazz, fd, iov, length);
|
|
|
|
if (res <= 0) {
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-02-17 15:19:01 +01:00
|
|
|
jint read0(JNIEnv * env, jclass clazz, jint fd, void *buffer, jint pos, jint limit) {
|
2014-02-15 22:26:36 +01:00
|
|
|
ssize_t res;
|
|
|
|
int err;
|
|
|
|
do {
|
|
|
|
res = read(fd, buffer + pos, (size_t) (limit - pos));
|
|
|
|
// Keep on reading if we was interrupted
|
|
|
|
} while (res == -1 && ((err = errno) == EINTR));
|
|
|
|
|
|
|
|
if (res < 0) {
|
|
|
|
if (err == EAGAIN || err == EWOULDBLOCK) {
|
|
|
|
// Nothing left to read
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (err == EBADF) {
|
|
|
|
throwClosedChannelException(env);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
throwIOException(env, exceptionMessage("Error while read(...): ", err));
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (res == 0) {
|
|
|
|
// end-of-stream
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return (jint) res;
|
|
|
|
}
|
|
|
|
|
2014-02-17 15:19:01 +01:00
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_read(JNIEnv * env, jclass clazz, jint fd, jobject jbuffer, jint pos, jint limit) {
|
|
|
|
void *buffer = (*env)->GetDirectBufferAddress(env, jbuffer);
|
|
|
|
if (buffer == NULL) {
|
|
|
|
throwRuntimeException(env, "Unable to access address of buffer");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return read0(env, clazz, fd, buffer, pos, limit);
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_readAddress(JNIEnv * env, jclass clazz, jint fd, jlong address, jint pos, jint limit) {
|
|
|
|
return read0(env, clazz, fd, (void*) address, pos, limit);
|
|
|
|
}
|
|
|
|
|
2014-02-15 22:26:36 +01:00
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_close(JNIEnv * env, jclass clazz, jint fd) {
|
|
|
|
if (close(fd) < 0) {
|
|
|
|
throwIOException(env, "Error closing file descriptor");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_shutdown(JNIEnv * env, jclass clazz, jint fd, jboolean read, jboolean write) {
|
|
|
|
int mode;
|
|
|
|
if (read && write) {
|
|
|
|
mode = SHUT_RDWR;
|
|
|
|
} else if (read) {
|
|
|
|
mode = SHUT_RD;
|
|
|
|
} else if (write) {
|
|
|
|
mode = SHUT_WR;
|
|
|
|
}
|
|
|
|
if (shutdown(fd, mode) < 0) {
|
|
|
|
throwIOException(env, "Error shutdown socket file descriptor");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_socket(JNIEnv * env, jclass clazz) {
|
|
|
|
// TODO: Maybe also respect -Djava.net.preferIPv4Stack=true
|
|
|
|
int fd = socket(socketType, SOCK_STREAM | SOCK_NONBLOCK, 0);
|
|
|
|
if (fd == -1) {
|
|
|
|
int err = errno;
|
|
|
|
throwIOException(env, exceptionMessage("Error creating socket: ", err));
|
|
|
|
return -1;
|
|
|
|
} else if (socketType == AF_INET6){
|
|
|
|
// Allow to listen /connect ipv4 and ipv6
|
|
|
|
int optval = 0;
|
|
|
|
if (setOption(env, fd, IPPROTO_IPV6, IPV6_V6ONLY, &optval, sizeof(optval)) < 0) {
|
|
|
|
// Something went wrong so close the fd and return here. setOption(...) itself throws the exception already.
|
|
|
|
close(fd);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return fd;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_bind(JNIEnv * env, jclass clazz, jint fd, jbyteArray address, jint scopeId, jint port) {
|
|
|
|
struct sockaddr_storage addr;
|
|
|
|
init_sockaddr(env, address, scopeId, port, &addr);
|
|
|
|
|
|
|
|
if(bind(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1){
|
|
|
|
int err = errno;
|
|
|
|
throwIOException(env, exceptionMessage("Error during bind(...): ", err));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_listen(JNIEnv * env, jclass clazz, jint fd, jint backlog) {
|
|
|
|
if(listen(fd, backlog) == -1) {
|
|
|
|
int err = errno;
|
|
|
|
throwIOException(env, exceptionMessage("Error during listen(...): ", err));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jboolean JNICALL Java_io_netty_channel_epoll_Native_connect(JNIEnv * env, jclass clazz, jint fd, jbyteArray address, jint scopeId, jint port) {
|
|
|
|
struct sockaddr_storage addr;
|
|
|
|
init_sockaddr(env, address, scopeId, port, &addr);
|
|
|
|
|
|
|
|
int res;
|
|
|
|
int err;
|
|
|
|
do {
|
|
|
|
res = connect(fd, (struct sockaddr *) &addr, sizeof(addr));
|
|
|
|
} while (res == -1 && ((err = errno) == EINTR));
|
|
|
|
|
|
|
|
if (res < 0) {
|
|
|
|
if (err == EINPROGRESS) {
|
|
|
|
// connect not complete yet need to wait for EPOLLOUT event
|
|
|
|
return JNI_FALSE;
|
|
|
|
}
|
|
|
|
throwIOException(env, exceptionMessage("Unable to connect to remote host: ", err));
|
|
|
|
|
|
|
|
return JNI_FALSE;
|
|
|
|
}
|
|
|
|
return JNI_TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_finishConnect(JNIEnv * env, jclass clazz, jint fd) {
|
|
|
|
// connect done, check for error
|
|
|
|
int optval;
|
|
|
|
int res = getOption(env, fd, SOL_SOCKET, SO_ERROR, &optval, sizeof(optval));
|
|
|
|
if (res == 0) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
throwIOException(env, exceptionMessage("Unable to connect to remote host: ", optval));
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_accept(JNIEnv * env, jclass clazz, jint fd) {
|
|
|
|
jint socketFd;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
do {
|
|
|
|
if (accept4) {
|
|
|
|
socketFd = accept4(fd, NULL, 0, SOCK_NONBLOCK | SOCK_CLOEXEC);
|
|
|
|
} else {
|
|
|
|
socketFd = accept(fd, NULL, 0);
|
|
|
|
}
|
|
|
|
} while (socketFd == -1 && ((err = errno) == EINTR));
|
|
|
|
|
|
|
|
if (socketFd == -1) {
|
|
|
|
if (err == EAGAIN || err == EWOULDBLOCK) {
|
|
|
|
// Everything consumed so just return -1 here.
|
|
|
|
return -1;
|
|
|
|
} else {
|
|
|
|
throwIOException(env, exceptionMessage("Error during accept(...): ", err));
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (accept4) {
|
|
|
|
return socketFd;
|
|
|
|
} else {
|
|
|
|
// accept4 was not present so need two more sys-calls ...
|
|
|
|
if (fcntl(socketFd, F_SETFD, FD_CLOEXEC) == -1) {
|
|
|
|
throwIOException(env, exceptionMessage("Error during accept(...): ", err));
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (fcntl(socketFd, F_SETFL, O_NONBLOCK) == -1) {
|
|
|
|
throwIOException(env, exceptionMessage("Error during accept(...): ", err));
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return socketFd;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jlong JNICALL Java_io_netty_channel_epoll_Native_sendfile(JNIEnv *env, jclass clazz, jint fd, jobject fileRegion, jlong off, jlong len) {
|
|
|
|
jobject fileChannel = (*env)->GetObjectField(env, fileRegion, fileChannelFieldId);
|
|
|
|
if (fileChannel == NULL) {
|
|
|
|
throwRuntimeException(env, "Unable to obtain FileChannel from FileRegion");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
jobject fileDescriptor = (*env)->GetObjectField(env, fileChannel, fileDescriptorFieldId);
|
|
|
|
if (fileDescriptor == NULL) {
|
|
|
|
throwRuntimeException(env, "Unable to obtain FileDescriptor from FileChannel");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
jint srcFd = (*env)->GetIntField(env, fileDescriptor, fdFieldId);
|
|
|
|
if (srcFd == -1) {
|
|
|
|
throwRuntimeException(env, "Unable to obtain the fd from the FileDescriptor");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
ssize_t res;
|
|
|
|
off_t offset = off;
|
|
|
|
int err;
|
|
|
|
do {
|
|
|
|
res = sendfile(fd, srcFd, &offset, (size_t) len);
|
|
|
|
} while (res == -1 && ((err = errno) == EINTR));
|
|
|
|
if (res < 0) {
|
|
|
|
if (err == EAGAIN) {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
throwIOException(env, exceptionMessage("Error during accept(...): ", err));
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (res > 0) {
|
|
|
|
// update the transfered field in DefaultFileRegion
|
|
|
|
(*env)->SetLongField(env, fileRegion, transferedFieldId, off + res);
|
|
|
|
}
|
|
|
|
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jobject JNICALL Java_io_netty_channel_epoll_Native_remoteAddress(JNIEnv * env, jclass clazz, jint fd) {
|
|
|
|
socklen_t len;
|
|
|
|
struct sockaddr_storage addr;
|
|
|
|
|
|
|
|
len = sizeof addr;
|
|
|
|
if (getpeername(fd, (struct sockaddr*)&addr, &len) == -1) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
return createInetSocketAddress(env, addr);
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jobject JNICALL Java_io_netty_channel_epoll_Native_localAddress(JNIEnv * env, jclass clazz, jint fd) {
|
|
|
|
socklen_t len;
|
|
|
|
struct sockaddr_storage addr;
|
|
|
|
|
|
|
|
len = sizeof addr;
|
|
|
|
if (getsockname(fd, (struct sockaddr*)&addr, &len) == -1) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
return createInetSocketAddress(env, addr);
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_setReuseAddress(JNIEnv * env, jclass clazz, jint fd, jint optval) {
|
|
|
|
setOption(env, fd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval));
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_setTcpNoDelay(JNIEnv *env, jclass clazz, jint fd, jint optval) {
|
|
|
|
setOption(env, fd, IPPROTO_TCP, TCP_NODELAY, &optval, sizeof(optval));
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_setReceiveBufferSize(JNIEnv *env, jclass clazz, jint fd, jint optval) {
|
|
|
|
setOption(env, fd, SOL_SOCKET, SO_RCVBUF, &optval, sizeof(optval));
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_setSendBufferSize(JNIEnv *env, jclass clazz, jint fd, jint optval) {
|
|
|
|
setOption(env, fd, SOL_SOCKET, SO_SNDBUF, &optval, sizeof(optval));
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_setKeepAlive(JNIEnv *env, jclass clazz, jint fd, jint optval) {
|
|
|
|
setOption(env, fd, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof(optval));
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_setTcpCork(JNIEnv *env, jclass clazz, jint fd, jint optval) {
|
|
|
|
setOption(env, fd, SOL_TCP, TCP_CORK, &optval, sizeof(optval));
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_setSoLinger(JNIEnv *env, jclass clazz, jint fd, jint optval) {
|
|
|
|
setOption(env, fd, IPPROTO_IP, IP_TOS, &optval, sizeof(optval));
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT void JNICALL Java_io_netty_channel_epoll_Native_setTrafficClass(JNIEnv *env, jclass clazz, jint fd, jint optval) {
|
|
|
|
struct linger solinger;
|
|
|
|
if (optval < 0) {
|
|
|
|
solinger.l_onoff = 0;
|
|
|
|
solinger.l_linger = 0;
|
|
|
|
} else {
|
|
|
|
solinger.l_onoff = 1;
|
|
|
|
solinger.l_linger = optval;
|
|
|
|
}
|
|
|
|
setOption(env, fd, SOL_SOCKET, SO_LINGER, &solinger, sizeof(solinger));
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_isReuseAddresss(JNIEnv *env, jclass clazz, jint fd) {
|
|
|
|
int optval;
|
|
|
|
if (getOption(env, fd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)) == -1) {
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return optval;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_isTcpNoDelay(JNIEnv *env, jclass clazz, jint fd) {
|
|
|
|
int optval;
|
|
|
|
if (getOption(env, fd, IPPROTO_TCP, TCP_NODELAY, &optval, sizeof(optval)) == -1) {
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return optval;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_getReceiveBufferSize(JNIEnv * env, jclass clazz, jint fd) {
|
|
|
|
int optval;
|
|
|
|
if (getOption(env, fd, SOL_SOCKET, SO_RCVBUF, &optval, sizeof(optval)) == -1) {
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return optval;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_getSendBufferSize(JNIEnv *env, jclass clazz, jint fd) {
|
|
|
|
int optval;
|
|
|
|
if (getOption(env, fd, SOL_SOCKET, SO_SNDBUF, &optval, sizeof(optval)) == -1) {
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return optval;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_isTcpCork(JNIEnv *env, jclass clazz, jint fd) {
|
|
|
|
int optval;
|
|
|
|
if (getOption(env, fd, SOL_TCP, TCP_CORK, &optval, sizeof(optval)) == -1) {
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return optval;
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_getSoLinger(JNIEnv *env, jclass clazz, jint fd) {
|
|
|
|
struct linger optval;
|
|
|
|
if (getOption(env, fd, SOL_SOCKET, SO_LINGER, &optval, sizeof(optval)) == -1) {
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (optval.l_onoff == 0) {
|
|
|
|
return -1;
|
|
|
|
} else {
|
|
|
|
return optval.l_linger;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
JNIEXPORT jint JNICALL Java_io_netty_channel_epoll_Native_getTrafficClass(JNIEnv *env, jclass clazz, jint fd) {
|
|
|
|
int optval;
|
|
|
|
if (getOption(env, fd, IPPROTO_IP, IP_TOS, &optval, sizeof(optval)) == -1) {
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return optval;
|
|
|
|
}
|