CHANGELOG.md

0.4.0

In this release the runtime was removed from the Heph crate and moved into the new heph-rt crate. To see the changes made to the runtime see Heph-rt change log in the rt directory.

Added

• ActorFuture type to start an actor implementing a Future (https://github.com/Thomasdezeeuw/heph/commit/1fa9e0d5f80ceee84e93e6de0290cf842c2485e2).
• actor::spawn_sync_actor to spawn synchronous actors, leaving the caller in control of the spawned thread runnign the synchronous actor (https://github.com/Thomasdezeeuw/heph/commit/48ae0fbc5cf8e8d48f318baabdeb4b0cc5dd7ecf).
• ActorRef::map_fn and ActorRef::try_map_fn to create a mapped actor reference using a function. (https://github.com/Thomasdezeeuw/heph/commit/aa6ccf79de85c0abccb6a26f920c7d9d405e80cf).
• supervisor::StopSupervisor logs the error and stops the actor (https://github.com/Thomasdezeeuw/heph/commit/32ebc015a8f69be4c4f1c43ac020675e3c96cc09).

Changed

• Changed the API of NewActor::name to be an associated method (https://github.com/Thomasdezeeuw/heph/commit/099ddd19a0d087577a3dc84cfec8ddb8d572a05b).
• The messages module moved to the root of crate from actor::message (https://github.com/Thomasdezeeuw/heph/commit/68de95431abca0aa33704e64364c928df5c5152c).
• Added RuntimeAccess type to the SyncActor trait, similar to NewActor::RuntimeAccess (https://github.com/Thomasdezeeuw/heph/commit/33f0f485f1fbd9bd0ece76dce12040232fea2bc7).
• Now using key-value logging capability of log crate (https://github.com/Thomasdezeeuw/heph/commit/cb58771cb380aee601a733f2f66a9ada9998814e, https://github.com/Thomasdezeeuw/heph/commit/0e0b0d16c11b4ed93e0f02982545ef6eff0977d4).
• Two metrics, printed on receiving the SIGUSR2 signal, have changed names (https://github.com/Thomasdezeeuw/heph/commit/0f81654c63ca65a8c4ffb7d246cd7a219f98b637):
  • os -> host_os.
  • architecture -> host_arch.
• Reduced the allocations made joining a mapped ActorRef (https://github.com/Thomasdezeeuw/heph/commit/f0d8fc7b555fbda6d88e15032503e9516e103241).
• Reduced the allocations made sending with a mapped ActorRef (https://github.com/Thomasdezeeuw/heph/commit/80baf5b4e5d256372911141710a130d19dd8a5d4).
• Switch to Rust edition 2021 (https://github.com/Thomasdezeeuw/heph/commit/3a6c206946e656dda344da5ca36a9b35e50abed3).

Removed

• The rt module has been removed and now lives on as the heph-rt crate. Along with that the Runtime and RuntimeRef aliases are removed from the root of crate.
• Furthermore the log, net, spawn, timer and trace modules also has been moved to the heph-rt crate.
• A lot of functions in the test module were moved to the heph-rt crate.

0.3.1

Added

• ActorRef::join (https://github.com/Thomasdezeeuw/heph/commit/2987992735164fd2fd3c8f7a1dd681f13b14ccbb).
• From<ActorRef> implementation for ActorGroup (https://github.com/Thomasdezeeuw/heph/commit/75dff2b1968c3f850c4332d802362d7421c15e5e).
• ActorGroup::join_all (https://github.com/Thomasdezeeuw/heph/commit/50e4da5d1ff91ce46f323aed4b5a8ce3e92dbd0f).
• rt::Signal::User1 and Signal::User2 (https://github.com/Thomasdezeeuw/heph/commit/c039c92d4415125b25878313505f5d4d12f960e8).
• net::Bytes::limit (https://github.com/Thomasdezeeuw/heph/commit/7c2b12db4a7845b0bfb33dd7d1325e95aff8236f).
• net::BytesVectored::limit (https://github.com/Thomasdezeeuw/heph/commit/35551fb652462c3a7343dc3ca79004c969eb2288).
• test::try_spawn_local (https://github.com/Thomasdezeeuw/heph/commit/f3cd71cb09b41e21af2c0bcc1091bad7b5d651eb).
• test::try_spawn (https://github.com/Thomasdezeeuw/heph/commit/5a086b0ca2f358133c4cd7884adadbf15f180329).
• test::spawn_future (https://github.com/Thomasdezeeuw/heph/commit/3f58f18e49e3b925ff5c6f04fa9f8b827aa065ff).
• test::PanicSupervisor (https://github.com/Thomasdezeeuw/heph/commit/9fa67d58de15cc207eb3ec48444d0dc9ed0eabea).
• test::join and test::join_many (https://github.com/Thomasdezeeuw/heph/commit/1a1bab05260ba0640ca5bcb2fbbcc69ac97daab8).
• test::join_all (https://github.com/Thomasdezeeuw/heph/commit/e78fb7f4fe3f2e3843009ab42b5f77ee339d86e8).
• EXPERIMENTAL: output runtime metrics on SIGUSR2 process signal (https://github.com/Thomasdezeeuw/heph/commit/f451006939c5a76ad51e353d7c9f194e640dfe46). The metrics currently include the following:
  • Heph version
  • OS (version)
  • Architecture
  • Hostname
  • Host id
  • Application name
  • Process id
  • Parent process id
  • Uptime
  • Number of worker threads
  • Number of synchronous actors
  • Scheduler metrics, including number of inactive and ready actors
  • Number of timers and next timer ready
  • What process signals we're listening to
  • Number of process signal receivers (also see per worker thread)
  • Total CPU time
  • CPU time
  • Trace log: file path and number of traces
  • Per worker thread:
    • Worker id
    • Scheduler metrics, including number of inactive and ready actors
    • Number of timers and next timer ready
    • Number of process signal receivers
    • CPU affinity
    • CPU time
    • Trace log: number of traces

Changed

• Don't return an error when failing to relay a process signal to a worker thread (https://github.com/Thomasdezeeuw/heph/commit/0c46f9d2e7e87b58df196dbc3e82e022235b2afc).
• Updated rustc version to work on the nightly of at least 2021-08-13.

Fixed

• Memory leak in scheduler (https://github.com/Thomasdezeeuw/heph/commit/36dc37e0ada1911a3f4399767997a24c4a42441c).
• Send the correct number of bytes in TcpStream::send_file_all (https://github.com/Thomasdezeeuw/heph/commit/ea62b8d49657c3e7fb49159f1285ba33b5f7ffbd).
• Data race in RPC (https://github.com/Thomasdezeeuw/heph/commit/76ecb6a50afda975f10c59973601fb45919de351, https://github.com/Thomasdezeeuw/inbox/commit/2dd49a96e55e97e66a6634eab92cb81764c8d0cdk).
• Don't ignore EINVAL on macOS in TcpStream::connect (https://github.com/Thomasdezeeuw/heph/commit/7b7d4bde5db2624de92d660a6b74416e6dab7381).

0.3.0

Initial public release.