v0.4.0

New Features / Significant Changes

• Implement almost entire Etcd v2 API (user auth, roles, permissions)
• Expand redis API implementation (strlen, multi, discard, exec, info)
• Reduce memory usage for events significantly (>50%)
• Reduce memory usage for services
• Introduce non-atomic shared_ptr
• Support requesting dependencies of the same type multiple times but with different properties (e.g. two IHttpConnection's to different addresses)
• Support custom HTTP route matchers
  • Introduce an Ichor RegexRouteMatcher that supports capture groups for parsing e.g. /users/{id}?{queryParam1}={valueParam1}
• Implement Small Buffer Optimization in Ichor::Any
• Support converting Ichor::Any type and values to string for logging contents of Properties
• Add Raspberry Pi model specific optimization flags
• Add benchmark numbers on Raspberry Pi Model 4B
• Add _FORTIFY_SOURCE=3 and other security related flags on non-windows builds when using hardening
• Improve various compile/link modes, e.g. using libcpp instead of libstdc++ or creating a statically linked musl-aarch64-mimalloc build.
• Support services having a priority lower than the default dependency priority, effectively enabling some control over which services get initialized first.
• Have coroutines use the same priority for events as the services that create them

Third-party Libraries

• Fork and update Mimalloc to 2.1.2
  • Forked because of this issue.
  • Allows using mimalloc with ASAN as well as on the combination of musl, aarch64
  • Use mimalloc's secure mode when hardening is turned on, even for release builds.
• Update spdlog to v1.13.0
• Update fmt to 10.2.1
• Update Catch to 3.5.2
• Update sole to 1.0.5
• Update glaze to 2.0.6
• Introduce CTRE 3.8.1
• Introduce ankerl's unordered_dense 4.40, replacing std::unordered_map and abseil::btree_map entirely.
• Remove abseil as a possible dependency (users are free to re-introduce it in their own projects, of course)

Bug Fixes

• Fix bug when sending multiple messages with HttpConnectionService
• Fix data race with multiple threads creating services without dependencies
• Fix data race in coroutine IO implementation
• Fix bug in EventStatisticsService where collected events would be thrown away because a coroutine was not being run to completion
• Fix bug where iterators to event interceptors might get invalidated by modifying the list of interceptors inside of an event intercept handler
• Fix bug where realtime example would always try to re-enable SMT if option to disable it was missing