go-ethereum

Commit Graph

Author	SHA1	Message	Date
Martin Holst Swende	4d3525610e	all: remove deprecated uses of math.rand (#26710 ) This PR is a (superior) alternative to https://github.com/ethereum/go-ethereum/pull/26708, it handles deprecation, primarily two specific cases. `rand.Seed` is typically used in two ways - `rand.Seed(time.Now().UnixNano())` -- we seed it, just to be sure to get some random, and not always get the same thing on every run. This is not needed, with global seeding, so those are just removed. - `rand.Seed(1)` this is typically done to ensure we have a stable test. If we rely on this, we need to fix up the tests to use a deterministic prng-source. A few occurrences like this has been replaced with a proper custom source. `rand.Read` has been replaced by `crypto/rand`.`Read` in this PR.	2 years ago
Felix Lange	12df45662a	all: remove remaining uses of untyped golang-lru (#26194 )	2 years ago
Felix Lange	9afc6816d2	common/lru: add generic LRU implementation (#26162 ) It seems there is no fully typed library implementation of an LRU cache. So I wrote one. Method names are the same as github.com/hashicorp/golang-lru, and the new type can be used as a drop-in replacement. Two reasons to do this: - It's much easier to understand what a cache is for when the types are right there. - Performance: the new implementation is slightly faster and performs zero memory allocations in Add when the cache is at capacity. Overall, memory usage of the cache is much reduced because keys are values are no longer wrapped in interface.	2 years ago
Martin Holst Swende	8334b5f51a	common/lru: fix race in lru (#26164 ) This fixes a problem in the SizeConstrainedLRU. The SCLRU uses an underlying simple lru which is not thread safe. During the Get operation, the recentness of the accessed item is updated, so it is not a pure read-operation. Therefore, the mutex we need is a full mutex, not RLock. This PR changes the mutex to be a regular Mutex, instead of RWMutex, so a reviewer can at a glance see that all affected locations are fixed.	2 years ago
Martin Holst Swende	5fded04037	core/state: replace fastcache code cache with gc-friendly structure (#26092 ) This PR replaces fastcache with a pretty simple LRU which does not require explicit closing.	2 years ago

5 Commits (f5b6d7e9954cae87348e21525210affda09297c1)