MpscLinkedQueue.smali

.class public final Lrx/internal/util/unsafe/MpscLinkedQueue;
.super Lrx/internal/util/unsafe/BaseLinkedQueue;
.source "MpscLinkedQueue.java"


# annotations
.annotation system Ldalvik/annotation/Signature;
    value = {
        "<E:",
        "Ljava/lang/Object;",
        ">",
        "Lrx/internal/util/unsafe/BaseLinkedQueue<",
        "TE;>;"
    }
.end annotation

.annotation build Lrx/internal/util/SuppressAnimalSniffer;
.end annotation


# direct methods
.method public constructor <init>()V
    .registers 2

    .line 1
    invoke-direct {p0}, Lrx/internal/util/unsafe/BaseLinkedQueue;-><init>()V

    .line 2
    new-instance v0, Lrx/internal/util/atomic/LinkedQueueNode;

    invoke-direct {v0}, Lrx/internal/util/atomic/LinkedQueueNode;-><init>()V

    iput-object v0, p0, Lrx/internal/util/unsafe/BaseLinkedQueueConsumerNodeRef;->consumerNode:Lrx/internal/util/atomic/LinkedQueueNode;

    .line 3
    iget-object v0, p0, Lrx/internal/util/unsafe/BaseLinkedQueueConsumerNodeRef;->consumerNode:Lrx/internal/util/atomic/LinkedQueueNode;

    invoke-virtual {p0, v0}, Lrx/internal/util/unsafe/MpscLinkedQueue;->xchgProducerNode(Lrx/internal/util/atomic/LinkedQueueNode;)Lrx/internal/util/atomic/LinkedQueueNode;

    return-void
.end method


# virtual methods
.method public offer(Ljava/lang/Object;)Z
    .registers 3
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "(TE;)Z"
        }
    .end annotation

    if-eqz p1, :cond_10

    .line 1
    new-instance v0, Lrx/internal/util/atomic/LinkedQueueNode;

    invoke-direct {v0, p1}, Lrx/internal/util/atomic/LinkedQueueNode;-><init>(Ljava/lang/Object;)V

    .line 2
    invoke-virtual {p0, v0}, Lrx/internal/util/unsafe/MpscLinkedQueue;->xchgProducerNode(Lrx/internal/util/atomic/LinkedQueueNode;)Lrx/internal/util/atomic/LinkedQueueNode;

    move-result-object p1

    .line 3
    invoke-virtual {p1, v0}, Lrx/internal/util/atomic/LinkedQueueNode;->soNext(Lrx/internal/util/atomic/LinkedQueueNode;)V

    const/4 p1, 0x1

    return p1

    .line 4
    :cond_10
    new-instance p1, Ljava/lang/NullPointerException;

    const-string v0, "null elements not allowed"

    invoke-direct {p1, v0}, Ljava/lang/NullPointerException;-><init>(Ljava/lang/String;)V

    throw p1
.end method

.method public peek()Ljava/lang/Object;
    .registers 3
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "()TE;"
        }
    .end annotation

    .line 1
    iget-object v0, p0, Lrx/internal/util/unsafe/BaseLinkedQueueConsumerNodeRef;->consumerNode:Lrx/internal/util/atomic/LinkedQueueNode;

    .line 2
    invoke-virtual {v0}, Lrx/internal/util/atomic/LinkedQueueNode;->lvNext()Lrx/internal/util/atomic/LinkedQueueNode;

    move-result-object v1

    if-eqz v1, :cond_d

    .line 3
    invoke-virtual {v1}, Lrx/internal/util/atomic/LinkedQueueNode;->lpValue()Ljava/lang/Object;

    move-result-object v0

    return-object v0

    .line 4
    :cond_d
    invoke-virtual {p0}, Lrx/internal/util/unsafe/BaseLinkedQueueProducerNodeRef;->lvProducerNode()Lrx/internal/util/atomic/LinkedQueueNode;

    move-result-object v1

    if-eq v0, v1, :cond_1f

    .line 5
    :goto_13
    invoke-virtual {v0}, Lrx/internal/util/atomic/LinkedQueueNode;->lvNext()Lrx/internal/util/atomic/LinkedQueueNode;

    move-result-object v1

    if-nez v1, :cond_1a

    goto :goto_13

    .line 6
    :cond_1a
    invoke-virtual {v1}, Lrx/internal/util/atomic/LinkedQueueNode;->lpValue()Ljava/lang/Object;

    move-result-object v0

    return-object v0

    :cond_1f
    const/4 v0, 0x0

    return-object v0
.end method

.method public poll()Ljava/lang/Object;
    .registers 3
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "()TE;"
        }
    .end annotation

    .line 1
    invoke-virtual {p0}, Lrx/internal/util/unsafe/BaseLinkedQueueConsumerNodeRef;->lpConsumerNode()Lrx/internal/util/atomic/LinkedQueueNode;

    move-result-object v0

    .line 2
    invoke-virtual {v0}, Lrx/internal/util/atomic/LinkedQueueNode;->lvNext()Lrx/internal/util/atomic/LinkedQueueNode;

    move-result-object v1

    if-eqz v1, :cond_12

    .line 3
    invoke-virtual {v1}, Lrx/internal/util/atomic/LinkedQueueNode;->getAndNullValue()Ljava/lang/Object;

    move-result-object v0

    .line 4
    invoke-virtual {p0, v1}, Lrx/internal/util/unsafe/BaseLinkedQueueConsumerNodeRef;->spConsumerNode(Lrx/internal/util/atomic/LinkedQueueNode;)V

    return-object v0

    .line 5
    :cond_12
    invoke-virtual {p0}, Lrx/internal/util/unsafe/BaseLinkedQueueProducerNodeRef;->lvProducerNode()Lrx/internal/util/atomic/LinkedQueueNode;

    move-result-object v1

    if-eq v0, v1, :cond_26

    .line 6
    :goto_18
    invoke-virtual {v0}, Lrx/internal/util/atomic/LinkedQueueNode;->lvNext()Lrx/internal/util/atomic/LinkedQueueNode;

    move-result-object v1

    if-nez v1, :cond_1f

    goto :goto_18

    .line 7
    :cond_1f
    invoke-virtual {v1}, Lrx/internal/util/atomic/LinkedQueueNode;->getAndNullValue()Ljava/lang/Object;

    move-result-object v0

    .line 8
    iput-object v1, p0, Lrx/internal/util/unsafe/BaseLinkedQueueConsumerNodeRef;->consumerNode:Lrx/internal/util/atomic/LinkedQueueNode;

    return-object v0

    :cond_26
    const/4 v0, 0x0

    return-object v0
.end method

.method protected xchgProducerNode(Lrx/internal/util/atomic/LinkedQueueNode;)Lrx/internal/util/atomic/LinkedQueueNode;
    .registers 9
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "(",
            "Lrx/internal/util/atomic/LinkedQueueNode<",
            "TE;>;)",
            "Lrx/internal/util/atomic/LinkedQueueNode<",
            "TE;>;"
        }
    .end annotation

    .line 1
    :cond_0
    iget-object v6, p0, Lrx/internal/util/unsafe/BaseLinkedQueueProducerNodeRef;->producerNode:Lrx/internal/util/atomic/LinkedQueueNode;

    .line 2
    sget-object v0, Lrx/internal/util/unsafe/UnsafeAccess;->UNSAFE:Lsun/misc/Unsafe;

    sget-wide v2, Lrx/internal/util/unsafe/BaseLinkedQueueProducerNodeRef;->P_NODE_OFFSET:J

    move-object v1, p0

    move-object v4, v6

    move-object v5, p1

    invoke-virtual/range {v0 .. v5}, Lsun/misc/Unsafe;->compareAndSwapObject(Ljava/lang/Object;JLjava/lang/Object;Ljava/lang/Object;)Z

    move-result v0

    if-eqz v0, :cond_0

    return-object v6
.end method