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Handle local storage race conditions better (#3177)

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* Make local_storage_compare_and_set take Option for old_value

* Adapt srml/im-online to API changes

* Bump version

* Bump version again

* Replace match
This commit is contained in:
Michael Müller
2019-07-26 01:42:40 +02:00
committed by Gavin Wood
parent af914e9f40
commit 23fba990ba
11 changed files with 118 additions and 33 deletions
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substrate/core/sr-io/src/lib.rs
+6 -1
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@@ -306,7 +306,12 @@ export_api! {
///
/// Note this storage is not part of the consensus, it's only accessible by
/// offchain worker tasks running on the same machine. It IS persisted between runs.
fn local_storage_compare_and_set(kind: StorageKind, key: &[u8], old_value: &[u8], new_value: &[u8]) -> bool;
fn local_storage_compare_and_set(
kind: StorageKind,
key: &[u8],
old_value: Option<&[u8]>,
new_value: &[u8]
) -> bool;
/// Gets a value from the local storage.
///