es2017.sharedmemory.d.ts

/// <reference lib="es2015.symbol" />
/// <reference lib="es2015.symbol.wellknown" />

interface SharedArrayBuffer {
    /**
     * Read-only. The length of the ArrayBuffer (in bytes).
     */
    readonly byteLength: number;

    /**
     * Returns a section of an SharedArrayBuffer.
     */
    slice(begin: number, end?: number): SharedArrayBuffer;
    readonly [Symbol.species]: SharedArrayBuffer;
    readonly [Symbol.toStringTag]: "SharedArrayBuffer";
}

interface SharedArrayBufferConstructor {
    prototype: SharedArrayBuffer;
    new (byteLength: number): SharedArrayBuffer;
}
declare var SharedArrayBuffer: SharedArrayBufferConstructor;

interface ArrayBufferTypes {
    SharedArrayBuffer: SharedArrayBuffer;
}

interface Atomics {
    /**
     * Adds a value to the value at the given position in the array, returning the original value.
     * Until this atomic operation completes, any other read or write operation against the array
     * will block.
     */
    add(typedArray: Int8Array | Uint8Array | Int16Array | Uint16Array | Int32Array | Uint32Array, index: number, value: number): number;

    /**
     * Stores the bitwise AND of a value with the value at the given position in the array,
     * returning the original value. Until this atomic operation completes, any other read or
     * write operation against the array will block.
     */
    and(typedArray: Int8Array | Uint8Array | Int16Array | Uint16Array | Int32Array | Uint32Array, index: number, value: number): number;

    /**
     * Replaces the value at the given position in the array if the original value equals the given
     * expected value, returning the original value. Until this atomic operation completes, any
     * other read or write operation against the array will block.
     */
    compareExchange(typedArray: Int8Array | Uint8Array | Int16Array | Uint16Array | Int32Array | Uint32Array, index: number, expectedValue: number, replacementValue: number): number;

    /**
     * Replaces the value at the given position in the array, returning the original value. Until
     * this atomic operation completes, any other read or write operation against the array will
     * block.
     */
    exchange(typedArray: Int8Array | Uint8Array | Int16Array | Uint16Array | Int32Array | Uint32Array, index: number, value: number): number;

    /**
     * Returns a value indicating whether high-performance algorithms can use atomic operations
     * (`true`) or must use locks (`false`) for the given number of bytes-per-element of a typed
     * array.
     */
    isLockFree(size: number): boolean;

    /**
     * Returns the value at the given position in the array. Until this atomic operation completes,
     * any other read or write operation against the array will block.
     */
    load(typedArray: Int8Array | Uint8Array | Int16Array | Uint16Array | Int32Array | Uint32Array, index: number): number;

    /**
     * Stores the bitwise OR of a value with the value at the given position in the array,
     * returning the original value. Until this atomic operation completes, any other read or write
     * operation against the array will block.
     */
    or(typedArray: Int8Array | Uint8Array | Int16Array | Uint16Array | Int32Array | Uint32Array, index: number, value: number): number;

    /**
     * Stores a value at the given position in the array, returning the new value. Until this
     * atomic operation completes, any other read or write operation against the array will block.
     */
    store(typedArray: Int8Array | Uint8Array | Int16Array | Uint16Array | Int32Array | Uint32Array, index: number, value: number): number;

    /**
     * Subtracts a value from the value at the given position in the array, returning the original
     * value. Until this atomic operation completes, any other read or write operation against the
     * array will block.
     */
    sub(typedArray: Int8Array | Uint8Array | Int16Array | Uint16Array | Int32Array | Uint32Array, index: number, value: number): number;

    /**
     * If the value at the given position in the array is equal to the provided value, the current
     * agent is put to sleep causing execution to suspend until the timeout expires (returning
     * `"timed-out"`) or until the agent is awoken (returning `"ok"`); otherwise, returns
     * `"not-equal"`.
     */
    wait(typedArray: Int32Array, index: number, value: number, timeout?: number): "ok" | "not-equal" | "timed-out";

    /**
     * Wakes up sleeping agents that are waiting on the given index of the array, returning the
     * number of agents that were awoken.
     * @param typedArray A shared Int32Array.
     * @param index The position in the typedArray to wake up on.
     * @param count The number of sleeping agents to notify. Defaults to +Infinity.
     */
    notify(typedArray: Int32Array, index: number, count?: number): number;

    /**
     * Stores the bitwise XOR of a value with the value at the given position in the array,
     * returning the original value. Until this atomic operation completes, any other read or write
     * operation against the array will block.
     */
    xor(typedArray: Int8Array | Uint8Array | Int16Array | Uint16Array | Int32Array | Uint32Array, index: number, value: number): number;

    readonly [Symbol.toStringTag]: "Atomics";
}

declare var Atomics: Atomics;