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Diffstat (limited to 'packages/taler-wallet-webextension/src/browserCryptoWorkerFactory.ts')
-rw-r--r-- | packages/taler-wallet-webextension/src/browserCryptoWorkerFactory.ts | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/packages/taler-wallet-webextension/src/browserCryptoWorkerFactory.ts b/packages/taler-wallet-webextension/src/browserCryptoWorkerFactory.ts new file mode 100644 index 000000000..b91f49f17 --- /dev/null +++ b/packages/taler-wallet-webextension/src/browserCryptoWorkerFactory.ts @@ -0,0 +1,43 @@ +/* + This file is part of TALER + (C) 2016 GNUnet e.V. + + TALER is free software; you can redistribute it and/or modify it under the + terms of the GNU General Public License as published by the Free Software + Foundation; either version 3, or (at your option) any later version. + + TALER is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + A PARTICULAR PURPOSE. See the GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along with + TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> + */ + +/** + * API to access the Taler crypto worker thread. + * @author Florian Dold + */ + +import type { CryptoWorker, CryptoWorkerFactory } from "taler-wallet-core"; + +export class BrowserCryptoWorkerFactory implements CryptoWorkerFactory { + startWorker(): CryptoWorker { + const workerCtor = Worker; + const workerPath = "/browserWorkerEntry.js"; + return new workerCtor(workerPath) as CryptoWorker; + } + + getConcurrency(): number { + let concurrency = 2; + try { + // only works in the browser + // tslint:disable-next-line:no-string-literal + concurrency = (navigator as any)["hardwareConcurrency"]; + concurrency = Math.max(1, Math.ceil(concurrency / 2)); + } catch (e) { + concurrency = 2; + } + return concurrency; + } +} |