diff options
Diffstat (limited to 'keystore/java/android/security/KeyStoreSecurityLevel.java')
| -rw-r--r-- | keystore/java/android/security/KeyStoreSecurityLevel.java | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/keystore/java/android/security/KeyStoreSecurityLevel.java b/keystore/java/android/security/KeyStoreSecurityLevel.java index 3ef4aa5b7ec3..56dd7f049828 100644 --- a/keystore/java/android/security/KeyStoreSecurityLevel.java +++ b/keystore/java/android/security/KeyStoreSecurityLevel.java @@ -96,20 +96,21 @@ public class KeyStoreSecurityLevel { } catch (ServiceSpecificException e) { switch (e.errorCode) { case ResponseCode.BACKEND_BUSY: { + long backOffHint = (long) (Math.random() * 80 + 20); if (CompatChanges.isChangeEnabled( KeyStore2.KEYSTORE_OPERATION_CREATION_MAY_FAIL)) { // Starting with Android S we inform the caller about the // backend being busy. - throw new BackendBusyException(); + throw new BackendBusyException(backOffHint); } else { // Before Android S operation creation must always succeed. So we // just have to retry. We do so with a randomized back-off between - // 50 and 250ms. + // 20 and 100ms. // It is a little awkward that we cannot break out of this loop // by interrupting this thread. But that is the expected behavior. // There is some comfort in the fact that interrupting a thread // also does not unblock a thread waiting for a binder transaction. - interruptedPreservingSleep((long) (Math.random() * 200 + 50)); + interruptedPreservingSleep(backOffHint); } break; } |