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Use single stats watcher per filename

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Fixes #28690
This commit is contained in:
Sheetal Nandi
2019-07-29 15:32:53 -07:00
parent 2db8a13d81
commit b84f13d7cf
4 changed files with 194 additions and 110 deletions
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35
src/harness/virtualFileSystemWithWatch.ts
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@@ -314,6 +314,11 @@ interface Array<T> {}`
invokeFileDeleteCreateAsPartInsteadOfChange: boolean;
}
export enum Tsc_WatchFile {
DynamicPolling = "DynamicPriorityPolling",
SingleFileWatcherPerName = "SingleFileWatcherPerName"
}
export enum Tsc_WatchDirectory {
WatchFile = "RecursiveDirectoryUsingFsWatchFile",
NonRecursiveWatchDirectory = "RecursiveDirectoryUsingNonRecursiveWatchDirectory",
@@ -339,7 +344,7 @@ interface Array<T> {}`
readonly watchedFiles = createMultiMap<TestFileWatcher>();
private readonly executingFilePath: string;
private readonly currentDirectory: string;
private readonly dynamicPriorityWatchFile: HostWatchFile | undefined;
private readonly customWatchFile: HostWatchFile | undefined;
private readonly customRecursiveWatchDirectory: HostWatchDirectory | undefined;
public require: ((initialPath: string, moduleName: string) => server.RequireResult) | undefined;
@@ -349,9 +354,23 @@ interface Array<T> {}`
this.executingFilePath = this.getHostSpecificPath(executingFilePath);
this.currentDirectory = this.getHostSpecificPath(currentDirectory);
this.reloadFS(fileOrFolderorSymLinkList);
this.dynamicPriorityWatchFile = this.environmentVariables && this.environmentVariables.get("TSC_WATCHFILE") === "DynamicPriorityPolling" ?
createDynamicPriorityPollingWatchFile(this) :
undefined;
const tscWatchFile = this.environmentVariables && this.environmentVariables.get("TSC_WATCHFILE") as Tsc_WatchFile;
switch (tscWatchFile) {
case Tsc_WatchFile.DynamicPolling:
this.customWatchFile = createDynamicPriorityPollingWatchFile(this);
break;
case Tsc_WatchFile.SingleFileWatcherPerName:
this.customWatchFile = createSingleFileWatcherPerName(
this.watchFileWorker.bind(this),
this.useCaseSensitiveFileNames
);
break;
case undefined:
break;
default:
Debug.assertNever(tscWatchFile);
}
const tscWatchDirectory = this.environmentVariables && this.environmentVariables.get("TSC_WATCHDIRECTORY") as Tsc_WatchDirectory;
if (tscWatchDirectory === Tsc_WatchDirectory.WatchFile) {
const watchDirectory: HostWatchDirectory = (directory, cb) => this.watchFile(directory, () => cb(directory), PollingInterval.Medium);
@@ -854,10 +873,14 @@ interface Array<T> {}`
}
watchFile(fileName: string, cb: FileWatcherCallback, pollingInterval: number) {
if (this.dynamicPriorityWatchFile) {
return this.dynamicPriorityWatchFile(fileName, cb, pollingInterval);
if (this.customWatchFile) {
return this.customWatchFile(fileName, cb, pollingInterval);
}
return this.watchFileWorker(fileName, cb);
}
private watchFileWorker(fileName: string, cb: FileWatcherCallback) {
const path = this.toFullPath(fileName);
const callback: TestFileWatcher = { fileName, cb };
this.watchedFiles.add(path, callback);