Obtain static fields via JNI and not duplicate their values
Motivation: To ensure we use the correct values when passing values from Java to C and the other way around it is better to use JNI to lookup the values. Modifications: Add NativeStaticallyRefererencedJniMethods and use it (just as we do in kqueue / epoll) Results: More robust code
This commit is contained in:
Norman Maurer
parent
44f2cba67a
commit
74fd0c1375
@ -57,6 +57,7 @@
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/eventfd.h>
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#include <poll.h>
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static jmethodID ringBufferMethodId = NULL;
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static jmethodID ioUringSubmissionQueueMethodId = NULL;
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@ -362,7 +363,76 @@ static jint netty_create_file(JNIEnv *env, jclass class) {
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return open("io-uring-test.txt", O_RDWR | O_TRUNC | O_CREAT, 0644);
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}
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static jint netty_io_uring_sockNonblock(JNIEnv* env, jclass clazz) {
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return SOCK_NONBLOCK;
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}
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static jint netty_io_uring_sockCloexec(JNIEnv* env, jclass clazz) {
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return SOCK_CLOEXEC;
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}
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static jint netty_io_uring_pollin(JNIEnv* env, jclass clazz) {
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return POLLIN;
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}
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static jint netty_io_uring_pollout(JNIEnv* env, jclass clazz) {
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return POLLOUT;
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}
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static jint netty_io_uring_pollrdhup(JNIEnv* env, jclass clazz) {
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return POLLRDHUP;
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}
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static jint netty_io_uring_ioringOpWritev(JNIEnv* env, jclass clazz) {
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return IORING_OP_WRITEV;
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}
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static jint netty_io_uring_ioringOpPollAdd(JNIEnv* env, jclass clazz) {
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return IORING_OP_POLL_ADD;
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}
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static jint netty_io_uring_ioringOpPollRemove(JNIEnv* env, jclass clazz) {
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return IORING_OP_POLL_REMOVE;
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}
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static jint netty_io_uring_ioringOpTimeout(JNIEnv* env, jclass clazz) {
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return IORING_OP_TIMEOUT;
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}
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static jint netty_io_uring_ioringOpAccept(JNIEnv* env, jclass clazz) {
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return IORING_OP_ACCEPT;
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}
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static jint netty_io_uring_ioringOpRead(JNIEnv* env, jclass clazz) {
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return IORING_OP_READ;
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}
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static jint netty_io_uring_ioringOpWrite(JNIEnv* env, jclass clazz) {
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return IORING_OP_WRITE;
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}
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static jint netty_io_uring_ioringOpConnect(JNIEnv* env, jclass clazz) {
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return IORING_OP_CONNECT;
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}
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// JNI Method Registration Table Begin
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static const JNINativeMethod statically_referenced_fixed_method_table[] = {
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{ "sockNonblock", "()I", (void *) netty_io_uring_sockNonblock },
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{ "sockCloexec", "()I", (void *) netty_io_uring_sockCloexec },
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{ "pollin", "()I", (void *) netty_io_uring_pollin },
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{ "pollout", "()I", (void *) netty_io_uring_pollout },
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{ "pollrdhup", "()I", (void *) netty_io_uring_pollrdhup },
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{ "ioringOpWritev", "()I", (void *) netty_io_uring_ioringOpWritev },
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{ "ioringOpPollAdd", "()I", (void *) netty_io_uring_ioringOpPollAdd },
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{ "ioringOpPollRemove", "()I", (void *) netty_io_uring_ioringOpPollRemove },
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{ "ioringOpTimeout", "()I", (void *) netty_io_uring_ioringOpTimeout },
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{ "ioringOpAccept", "()I", (void *) netty_io_uring_ioringOpAccept },
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{ "ioringOpRead", "()I", (void *) netty_io_uring_ioringOpRead },
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{ "ioringOpWrite", "()I", (void *) netty_io_uring_ioringOpWrite },
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{ "ioringOpConnect", "()I", (void *) netty_io_uring_ioringOpConnect }
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};
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static const jint statically_referenced_fixed_method_table_size = sizeof(statically_referenced_fixed_method_table) / sizeof(statically_referenced_fixed_method_table[0]);
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static const JNINativeMethod method_table[] = {
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{"ioUringSetup", "(I)Lio/netty/channel/uring/RingBuffer;", (void *) netty_io_uring_setup},
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{"ioUringExit", "(Lio/netty/channel/uring/RingBuffer;)V", (void *) netty_io_uring_ring_buffer_exit},
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@ -413,6 +483,15 @@ JNIEXPORT jint JNI_OnLoad(JavaVM *vm, void *reserved) {
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return JNI_ERR;
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}
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// We must register the statically referenced methods first!
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if (netty_unix_util_register_natives(env,
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packagePrefix,
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"io/netty/channel/uring/NativeStaticallyReferencedJniMethods",
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statically_referenced_fixed_method_table,
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statically_referenced_fixed_method_table_size) != 0) {
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goto done;
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}
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if (netty_unix_util_register_natives(env, packagePrefix,
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"io/netty/channel/uring/Native",
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method_table, method_table_size) != 0) {
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@ -218,14 +218,14 @@ abstract class AbstractIOUringChannel extends AbstractChannel implements UnixCha
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if (isRegistered()) {
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IOUringSubmissionQueue submissionQueue = submissionQueue();
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if ((ioState & POLL_IN_SCHEDULED) != 0) {
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submissionQueue.addPollRemove(socket.intValue(), IOUring.POLLMASK_IN);
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submissionQueue.addPollRemove(socket.intValue(), Native.POLLIN);
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ioState &= ~POLL_IN_SCHEDULED;
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}
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if ((ioState & POLL_OUT_SCHEDULED) != 0) {
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submissionQueue.addPollRemove(socket.intValue(), IOUring.POLLMASK_OUT);
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submissionQueue.addPollRemove(socket.intValue(), Native.POLLOUT);
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ioState &= ~POLL_OUT_SCHEDULED;
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}
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submissionQueue.addPollRemove(socket.intValue(), IOUring.POLLMASK_RDHUP);
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submissionQueue.addPollRemove(socket.intValue(), Native.POLLRDHUP);
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submissionQueue.submit();
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}
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@ -20,18 +20,6 @@ import io.netty.util.internal.SystemPropertyUtil;
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final class IOUring {
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private static final Throwable UNAVAILABILITY_CAUSE;
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static final int OP_WRITEV = 2;
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static final int IO_POLL = 6;
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static final int IO_TIMEOUT = 11;
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static final int OP_ACCEPT = 13;
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static final int OP_READ = 22;
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static final int OP_WRITE = 23;
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static final int OP_POLL_REMOVE = 7;
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static final int OP_CONNECT = 16;
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static final int POLLMASK_IN = 1;
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static final int POLLMASK_OUT = 4;
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static final int POLLMASK_RDHUP = 8192;
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static {
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Throwable cause = null;
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@ -17,6 +17,7 @@ package io.netty.channel.uring;
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import io.netty.channel.EventLoopGroup;
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import io.netty.channel.SingleThreadEventLoop;
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import io.netty.channel.unix.Errors;
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import io.netty.channel.unix.FileDescriptor;
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import io.netty.util.collection.IntObjectHashMap;
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import io.netty.util.collection.IntObjectMap;
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@ -35,7 +36,6 @@ final class IOUringEventLoop extends SingleThreadEventLoop implements
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//Todo set config ring buffer size
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private static final int ringSize = 32;
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private static final int ENOENT = -2;
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private static final long ETIME = -62;
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static final long ECANCELED = -125;
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@ -168,83 +168,70 @@ final class IOUringEventLoop extends SingleThreadEventLoop implements
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}
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}
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@Override
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public boolean handle(int fd, int res, long flags, int op, int pollMask) {
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IOUringSubmissionQueue submissionQueue = ringBuffer.getIoUringSubmissionQueue();
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switch (op) {
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case IOUring.OP_ACCEPT:
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// Fall-through
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case IOUring.OP_READ:
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AbstractIOUringChannel readChannel = channels.get(fd);
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if (readChannel == null) {
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break;
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}
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((AbstractIOUringChannel.AbstractUringUnsafe) readChannel.unsafe()).readComplete(res);
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break;
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case IOUring.OP_WRITEV:
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// Fall-through
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case IOUring.OP_WRITE:
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AbstractIOUringChannel writeChannel = channels.get(fd);
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if (writeChannel == null) {
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break;
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}
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((AbstractIOUringChannel.AbstractUringUnsafe) writeChannel.unsafe()).writeComplete(res);
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break;
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case IOUring.IO_TIMEOUT:
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if (res == ETIME) {
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prevDeadlineNanos = NONE;
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}
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break;
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case IOUring.IO_POLL:
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if (res == ECANCELED) {
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logger.trace("IO_POLL cancelled");
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break;
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}
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if (eventfd.intValue() == fd) {
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pendingWakeup = false;
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handleEventFd(submissionQueue);
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} else {
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AbstractIOUringChannel channel = channels.get(fd);
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if (channel == null) {
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break;
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}
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if ((pollMask & IOUring.POLLMASK_OUT) != 0) {
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((AbstractIOUringChannel.AbstractUringUnsafe) channel.unsafe()).pollOut(res);
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}
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if ((pollMask & IOUring.POLLMASK_IN) != 0) {
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((AbstractIOUringChannel.AbstractUringUnsafe) channel.unsafe()).pollIn(res);
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}
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if ((pollMask & IOUring.POLLMASK_RDHUP) != 0) {
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((AbstractIOUringChannel.AbstractUringUnsafe) channel.unsafe()).pollRdHup(res);
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}
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}
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break;
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case IOUring.OP_POLL_REMOVE:
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if (res == ENOENT) {
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logger.trace("POLL_REMOVE not successful");
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} else if (res == 0) {
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logger.trace("POLL_REMOVE successful");
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}
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break;
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case IOUring.OP_CONNECT:
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AbstractIOUringChannel channel = channels.get(fd);
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if (channel != null) {
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((AbstractIOUringChannel.AbstractUringUnsafe) channel.unsafe()).connectComplete(res);
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}
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break;
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default:
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break;
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if (op == Native.IORING_OP_READ || op == Native.IORING_OP_ACCEPT) {
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handleRead(fd, res);
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} else if (op == Native.IORING_OP_WRITEV || op == Native.IORING_OP_WRITE) {
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handleWrite(fd, res);
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} else if (op == Native.IORING_OP_POLL_ADD) {
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if (res == ECANCELED) {
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logger.trace("IORING_POLL_ADD cancelled");
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return true;
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}
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if (eventfd.intValue() == fd) {
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pendingWakeup = false;
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handleEventFd(submissionQueue);
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} else {
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handlePollAdd(fd, res, pollMask);
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}
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} else if (op == Native.IORING_OP_POLL_REMOVE) {
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if (res == Errors.ERRNO_ENOENT_NEGATIVE) {
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logger.trace("IORING_POLL_REMOVE not successful");
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} else if (res == 0) {
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logger.trace("IORING_POLL_REMOVE successful");
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}
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} else if (op == Native.IORING_OP_CONNECT) {
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handleConnect(fd, res);
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} else if (op == Native.IORING_OP_TIMEOUT) {
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if (res == ETIME) {
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prevDeadlineNanos = NONE;
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}
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}
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return true;
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}
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private void handleRead(int fd, int res) {
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AbstractIOUringChannel readChannel = channels.get(fd);
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if (readChannel != null) {
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((AbstractIOUringChannel.AbstractUringUnsafe) readChannel.unsafe()).readComplete(res);
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}
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}
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private void handleWrite(int fd, int res) {
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AbstractIOUringChannel writeChannel = channels.get(fd);
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if (writeChannel != null) {
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((AbstractIOUringChannel.AbstractUringUnsafe) writeChannel.unsafe()).writeComplete(res);
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}
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}
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private void handlePollAdd(int fd, int res, int pollMask) {
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AbstractIOUringChannel channel = channels.get(fd);
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if (channel != null) {
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if ((pollMask & Native.POLLOUT) != 0) {
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((AbstractIOUringChannel.AbstractUringUnsafe) channel.unsafe()).pollOut(res);
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}
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if ((pollMask & Native.POLLIN) != 0) {
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((AbstractIOUringChannel.AbstractUringUnsafe) channel.unsafe()).pollIn(res);
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}
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if ((pollMask & Native.POLLRDHUP) != 0) {
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((AbstractIOUringChannel.AbstractUringUnsafe) channel.unsafe()).pollRdHup(res);
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}
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}
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}
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private void handleEventFd(IOUringSubmissionQueue submissionQueue) {
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// We need to consume the data as otherwise we would see another event
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// in the completionQueue without
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@ -256,6 +243,13 @@ final class IOUringEventLoop extends SingleThreadEventLoop implements
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submissionQueue.submit();
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}
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private void handleConnect(int fd, int res) {
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AbstractIOUringChannel channel = channels.get(fd);
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if (channel != null) {
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((AbstractIOUringChannel.AbstractUringUnsafe) channel.unsafe()).connectComplete(res);
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}
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}
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@Override
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protected void cleanup() {
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try {
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@ -32,8 +32,6 @@ final class IOUringSubmissionQueue {
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private static final int INT_SIZE = Integer.BYTES; //no 32 Bit support?
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private static final int KERNEL_TIMESPEC_SIZE = 16; //__kernel_timespec
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private static final int IOSQE_IO_LINK = 4;
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//these offsets are used to access specific properties
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//SQE https://github.com/axboe/liburing/blob/master/src/include/liburing/io_uring.h#L21
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private static final int SQE_OP_CODE_FIELD = 0;
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@ -68,9 +66,6 @@ final class IOUringSubmissionQueue {
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private final long ringAddress;
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private final int ringFd;
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private static final int SOCK_NONBLOCK = 2048;
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private static final int SOCK_CLOEXEC = 524288;
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private final ByteBuffer timeoutMemory;
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private final long timeoutMemoryAddress;
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@ -123,9 +118,9 @@ final class IOUringSubmissionQueue {
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PlatformDependent.putInt(sqe + SQE_LEN_FIELD, length);
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//user_data should be same as POLL_LINK fd
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if (op == IOUring.OP_POLL_REMOVE) {
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if (op == Native.IORING_OP_POLL_REMOVE) {
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PlatformDependent.putInt(sqe + SQE_FD_FIELD, -1);
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long uData = convertToUserData((byte) IOUring.IO_POLL, fd, pollMask);
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long uData = convertToUserData((byte) Native.IORING_OP_POLL_ADD, fd, pollMask);
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PlatformDependent.putLong(sqe + SQE_ADDRESS_FIELD, uData);
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PlatformDependent.putLong(sqe + SQE_USER_DATA_FIELD, convertToUserData(op, fd, 0));
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PlatformDependent.putInt(sqe + SQE_RW_FLAGS_FIELD, 0);
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@ -133,11 +128,11 @@ final class IOUringSubmissionQueue {
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long uData = convertToUserData(op, fd, pollMask);
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PlatformDependent.putLong(sqe + SQE_USER_DATA_FIELD, uData);
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//c union set Rw-Flags or accept_flags
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if (op != IOUring.OP_ACCEPT) {
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if (op != Native.IORING_OP_ACCEPT) {
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PlatformDependent.putInt(sqe + SQE_RW_FLAGS_FIELD, pollMask);
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} else {
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//accept_flags set NON_BLOCKING
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PlatformDependent.putInt(sqe + SQE_RW_FLAGS_FIELD, SOCK_NONBLOCK | SOCK_CLOEXEC);
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PlatformDependent.putInt(sqe + SQE_RW_FLAGS_FIELD, Native.SOCK_NONBLOCK | Native.SOCK_CLOEXEC);
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}
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}
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@ -164,20 +159,20 @@ final class IOUringSubmissionQueue {
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return false;
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}
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setTimeout(nanoSeconds);
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setData(sqe, (byte) IOUring.IO_TIMEOUT, 0, -1, timeoutMemoryAddress, 1, 0);
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setData(sqe, (byte) Native.IORING_OP_TIMEOUT, 0, -1, timeoutMemoryAddress, 1, 0);
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return true;
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}
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public boolean addPollIn(int fd) {
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return addPoll(fd, IOUring.POLLMASK_IN);
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return addPoll(fd, Native.POLLIN);
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}
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public boolean addPollRdHup(int fd) {
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return addPoll(fd, IOUring.POLLMASK_RDHUP);
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return addPoll(fd, Native.POLLRDHUP);
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}
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public boolean addPollOut(int fd) {
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return addPoll(fd, IOUring.POLLMASK_OUT);
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return addPoll(fd, Native.POLLOUT);
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}
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private boolean addPoll(int fd, int pollMask) {
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@ -192,7 +187,7 @@ final class IOUringSubmissionQueue {
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}
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}
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setData(sqe, (byte) IOUring.IO_POLL, pollMask, fd, 0, 0, 0);
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setData(sqe, (byte) Native.IORING_OP_POLL_ADD, pollMask, fd, 0, 0, 0);
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return submitted;
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}
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@ -208,7 +203,7 @@ final class IOUringSubmissionQueue {
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submitted = true;
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}
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}
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setData(sqe, (byte) IOUring.OP_READ, 0, fd, bufferAddress + pos, limit - pos, 0);
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setData(sqe, (byte) Native.IORING_OP_READ, 0, fd, bufferAddress + pos, limit - pos, 0);
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return submitted;
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}
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@ -223,7 +218,7 @@ final class IOUringSubmissionQueue {
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submitted = true;
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}
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}
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setData(sqe, (byte) IOUring.OP_WRITE, 0, fd, bufferAddress + pos, limit - pos, 0);
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setData(sqe, (byte) Native.IORING_OP_WRITE, 0, fd, bufferAddress + pos, limit - pos, 0);
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return submitted;
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}
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@ -238,7 +233,7 @@ final class IOUringSubmissionQueue {
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submitted = true;
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}
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}
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setData(sqe, (byte) IOUring.OP_ACCEPT, 0, fd, 0, 0, 0);
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setData(sqe, (byte) Native.IORING_OP_ACCEPT, 0, fd, 0, 0, 0);
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return submitted;
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||||
}
|
||||
|
||||
@ -254,7 +249,7 @@ final class IOUringSubmissionQueue {
|
||||
submitted = true;
|
||||
}
|
||||
}
|
||||
setData(sqe, (byte) IOUring.OP_POLL_REMOVE, pollMask, fd, 0, 0, 0);
|
||||
setData(sqe, (byte) Native.IORING_OP_POLL_REMOVE, pollMask, fd, 0, 0, 0);
|
||||
|
||||
return submitted;
|
||||
}
|
||||
@ -270,7 +265,7 @@ final class IOUringSubmissionQueue {
|
||||
submitted = true;
|
||||
}
|
||||
}
|
||||
setData(sqe, (byte) IOUring.OP_CONNECT, 0, fd, socketAddress, 0, socketAddressLength);
|
||||
setData(sqe, (byte) Native.IORING_OP_CONNECT, 0, fd, socketAddress, 0, socketAddressLength);
|
||||
|
||||
return submitted;
|
||||
}
|
||||
@ -286,7 +281,7 @@ final class IOUringSubmissionQueue {
|
||||
submitted = true;
|
||||
}
|
||||
}
|
||||
setData(sqe, (byte) IOUring.OP_WRITEV, 0, fd, iovecArrayAddress, length, 0);
|
||||
setData(sqe, (byte) Native.IORING_OP_WRITEV, 0, fd, iovecArrayAddress, length, 0);
|
||||
|
||||
return submitted;
|
||||
}
|
||||
|
||||
@ -15,9 +15,7 @@
|
||||
*/
|
||||
package io.netty.channel.uring;
|
||||
|
||||
import io.netty.channel.DefaultFileRegion;
|
||||
import io.netty.channel.unix.FileDescriptor;
|
||||
import io.netty.channel.unix.PeerCredentials;
|
||||
import io.netty.channel.unix.Socket;
|
||||
import io.netty.util.internal.NativeLibraryLoader;
|
||||
import io.netty.util.internal.PlatformDependent;
|
||||
@ -30,11 +28,9 @@ import java.io.IOException;
|
||||
import java.nio.channels.Selector;
|
||||
import java.util.Locale;
|
||||
|
||||
import static io.netty.channel.unix.Socket.isIPv6Preferred;
|
||||
|
||||
|
||||
final class Native {
|
||||
private static final InternalLogger logger = InternalLoggerFactory.getInstance(Native.class);
|
||||
private static final InternalLogger logger = InternalLoggerFactory.getInstance(Native.class);
|
||||
private static final int DEFAULT_RING_SIZE = SystemPropertyUtil.getInt("io.netty.uring.ringSize", 32);
|
||||
|
||||
static {
|
||||
@ -66,8 +62,20 @@ final class Native {
|
||||
}
|
||||
Socket.initialize();
|
||||
}
|
||||
static final int SOCK_NONBLOCK = NativeStaticallyReferencedJniMethods.sockNonblock();
|
||||
static final int SOCK_CLOEXEC = NativeStaticallyReferencedJniMethods.sockCloexec();
|
||||
static final int POLLIN = NativeStaticallyReferencedJniMethods.pollin();
|
||||
static final int POLLOUT = NativeStaticallyReferencedJniMethods.pollout();
|
||||
static final int POLLRDHUP = NativeStaticallyReferencedJniMethods.pollrdhup();
|
||||
|
||||
|
||||
static final int IORING_OP_POLL_ADD = NativeStaticallyReferencedJniMethods.ioringOpPollAdd();
|
||||
static final int IORING_OP_TIMEOUT = NativeStaticallyReferencedJniMethods.ioringOpTimeout();
|
||||
static final int IORING_OP_ACCEPT = NativeStaticallyReferencedJniMethods.ioringOpAccept();
|
||||
static final int IORING_OP_READ = NativeStaticallyReferencedJniMethods.ioringOpRead();
|
||||
static final int IORING_OP_WRITE = NativeStaticallyReferencedJniMethods.ioringOpWrite();
|
||||
static final int IORING_OP_POLL_REMOVE = NativeStaticallyReferencedJniMethods.ioringOpPollRemove();
|
||||
static final int IORING_OP_CONNECT = NativeStaticallyReferencedJniMethods.ioringOpConnect();
|
||||
static final int IORING_OP_WRITEV = NativeStaticallyReferencedJniMethods.ioringOpWritev();
|
||||
|
||||
public static RingBuffer createRingBuffer(int ringSize) {
|
||||
//Todo throw Exception if it's null
|
||||
|
||||
@ -0,0 +1,47 @@
|
||||
/*
|
||||
* Copyright 2020 The Netty Project
|
||||
*
|
||||
* The Netty Project licenses this file to you under the Apache License,
|
||||
* version 2.0 (the "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at:
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*/
|
||||
package io.netty.channel.uring;
|
||||
|
||||
/**
|
||||
* This class is necessary to break the following cyclic dependency:
|
||||
* <ol>
|
||||
* <li>JNI_OnLoad</li>
|
||||
* <li>JNI Calls FindClass because RegisterNatives (used to register JNI methods) requires a class</li>
|
||||
* <li>FindClass loads the class, but static members variables of that class attempt to call a JNI method which has not
|
||||
* yet been registered.</li>
|
||||
* <li>java.lang.UnsatisfiedLinkError is thrown because native method has not yet been registered.</li>
|
||||
* </ol>
|
||||
* Static members which call JNI methods must not be declared in this class!
|
||||
*/
|
||||
final class NativeStaticallyReferencedJniMethods {
|
||||
|
||||
private NativeStaticallyReferencedJniMethods() { }
|
||||
|
||||
static native int sockNonblock();
|
||||
static native int sockCloexec();
|
||||
static native int pollin();
|
||||
static native int pollout();
|
||||
static native int pollrdhup();
|
||||
|
||||
static native int ioringOpWritev();
|
||||
static native int ioringOpPollAdd();
|
||||
static native int ioringOpPollRemove();
|
||||
static native int ioringOpTimeout();
|
||||
static native int ioringOpAccept();
|
||||
static native int ioringOpRead();
|
||||
static native int ioringOpWrite();
|
||||
static native int ioringOpConnect();
|
||||
}
|
||||
@ -229,7 +229,7 @@ public class NativeTest {
|
||||
FileDescriptor eventFd = Native.newEventFd();
|
||||
submissionQueue.addPollIn(eventFd.intValue());
|
||||
submissionQueue.submit();
|
||||
submissionQueue.addPollRemove(eventFd.intValue(), IOUring.POLLMASK_IN);
|
||||
submissionQueue.addPollRemove(eventFd.intValue(), Native.POLLIN);
|
||||
submissionQueue.submit();
|
||||
|
||||
final AtomicReference<AssertionError> errorRef = new AtomicReference<AssertionError>();
|
||||
@ -238,9 +238,9 @@ public class NativeTest {
|
||||
new IOUringCompletionQueue.IOUringCompletionQueueCallback() {
|
||||
@Override
|
||||
public boolean handle(int fd, int res, long flags, int op, int mask) {
|
||||
if (op == IOUring.IO_POLL) {
|
||||
if (op == Native.IORING_OP_POLL_ADD) {
|
||||
assertEquals(IOUringEventLoop.ECANCELED, res);
|
||||
} else if (op == IOUring.OP_POLL_REMOVE) {
|
||||
} else if (op == Native.IORING_OP_POLL_REMOVE) {
|
||||
assertEquals(0, res);
|
||||
} else {
|
||||
fail("op " + op);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user