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Clean up how we use opIds (#4118)

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Ryan Dahl 2020-02-25 09:14:27 -05:00 • committed by GitHub
parent 805992b14a
commit 91b606aaae
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74 changed files with 367 additions and 589 deletions
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36
cli/js/files.ts
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@ -11,11 +11,15 @@ import {
SyncSeeker
} from "./io.ts";
import { sendAsyncMinimal, sendSyncMinimal } from "./dispatch_minimal.ts";
import * as dispatch from "./dispatch.ts";
import {
sendSync as sendSyncJson,
sendAsync as sendAsyncJson
} from "./dispatch_json.ts";
import { OPS_CACHE } from "./runtime.ts";
// This is done because read/write are extremely performance sensitive.
let OP_READ = -1;
let OP_WRITE = -1;
/** Open a file and return an instance of the `File` object
* synchronously.
@ -44,7 +48,7 @@ export function openSync(
options = modeOrOptions;
}
const rid = sendSyncJson(dispatch.OP_OPEN, { filename, options, mode });
const rid = sendSyncJson("op_open", { filename, options, mode });
return new File(rid);
}
@ -78,7 +82,7 @@ export async function open(
options = modeOrOptions;
}
const rid = await sendAsyncJson(dispatch.OP_OPEN, {
const rid = await sendAsyncJson("op_open", {
filename,
options,
mode
@ -118,7 +122,10 @@ export function readSync(rid: number, p: Uint8Array): number | EOF {
if (p.length == 0) {
return 0;
}
const nread = sendSyncMinimal(dispatch.OP_READ, rid, p);
if (OP_READ < 0) {
OP_READ = OPS_CACHE["op_read"];
}
const nread = sendSyncMinimal(OP_READ, rid, p);
if (nread < 0) {
throw new Error("read error");
} else if (nread == 0) {
@ -141,7 +148,10 @@ export async function read(rid: number, p: Uint8Array): Promise<number | EOF> {
if (p.length == 0) {
return 0;
}
const nread = await sendAsyncMinimal(dispatch.OP_READ, rid, p);
if (OP_READ < 0) {
OP_READ = OPS_CACHE["op_read"];
}
const nread = await sendAsyncMinimal(OP_READ, rid, p);
if (nread < 0) {
throw new Error("read error");
} else if (nread == 0) {
@ -161,7 +171,10 @@ export async function read(rid: number, p: Uint8Array): Promise<number | EOF> {
* Deno.writeSync(file.rid, data);
*/
export function writeSync(rid: number, p: Uint8Array): number {
const result = sendSyncMinimal(dispatch.OP_WRITE, rid, p);
if (OP_WRITE < 0) {
OP_WRITE = OPS_CACHE["op_write"];
}
const result = sendSyncMinimal(OP_WRITE, rid, p);
if (result < 0) {
throw new Error("write error");
} else {
@ -180,7 +193,10 @@ export function writeSync(rid: number, p: Uint8Array): number {
*
*/
export async function write(rid: number, p: Uint8Array): Promise<number> {
const result = await sendAsyncMinimal(dispatch.OP_WRITE, rid, p);
if (OP_WRITE < 0) {
OP_WRITE = OPS_CACHE["op_write"];
}
const result = await sendAsyncMinimal(OP_WRITE, rid, p);
if (result < 0) {
throw new Error("write error");
} else {
@ -194,7 +210,7 @@ export async function write(rid: number, p: Uint8Array): Promise<number> {
* Deno.seekSync(file.rid, 0, 0);
*/
export function seekSync(rid: number, offset: number, whence: SeekMode): void {
sendSyncJson(dispatch.OP_SEEK, { rid, offset, whence });
sendSyncJson("op_seek", { rid, offset, whence });
}
/** Seek a file ID to the given offset under mode given by `whence`.
@ -207,12 +223,12 @@ export async function seek(
offset: number,
whence: SeekMode
): Promise<void> {
await sendAsyncJson(dispatch.OP_SEEK, { rid, offset, whence });
await sendAsyncJson("op_seek", { rid, offset, whence });
}
/** Close the file ID. */
export function close(rid: number): void {
sendSyncJson(dispatch.OP_CLOSE, { rid });
sendSyncJson("op_close", { rid });
}
/** The Deno abstraction for reading and writing files. */