Function watchForCrashes

Extension/src/LanguageServer/extension.ts:1122–1163

(crashDirectory: string)

}

export function watchForCrashes(crashDirectory: string): void {
    if (crashDirectory !== "") {
        prevCppCrashFile = "";
        fs.stat(crashDirectory, (err) => {
            const crashObject: Record<string, string> = {};
            if (err?.code) {
                // If the directory isn't there, we have a problem...
                crashObject["errCode"] = err.code;
                telemetry.logLanguageServerEvent("CppCrash", crashObject);
                return;
            }

            // vscode.workspace.createFileSystemWatcher only works in workspace folders.
            try {
                fs.watch(crashDirectory, (event, filename) => {
                    if (event !== "change") {
                        return;
                    }
                    if (!filename || filename === prevCppCrashFile) {
                        return;
                    }
                    prevCppCrashFile = filename;
                    if (!filename.startsWith("cpptools")) {
                        return;
                    }
                    const crashDate: Date = new Date();
                    isWritingCrashCallStack = true;

                    // Wait 5 seconds to allow time for the crash log to finish being written.
                    setTimeout(() => {
                        isWritingCrashCallStack = false;
                        fs.readFile(path.resolve(crashDirectory, filename), 'utf8', (err, data) => {
                            void handleCrashFileRead(crashDirectory, filename, crashDate, err, data);
                        });
                    }, 5000);
                });
            } catch {
                // The file watcher limit is hit (may not be possible on Mac, but just in case).
            }
        });
    }
}

let previousCrashData: string;
let previousCrashCount: number = 0;