Timer - #26

…默认的闭门定时器过于频繁、所有定时器回调都在同一P线程上串行、macOS模拟在功能上并不等效。2、移除固定数组，改用unordered_map；3、为itimerspec添加归一化；4、解决CqSidOp的sid相同而event不同时添加失败的问题

# Conflicts:
#	src/brpc/ubshm/ub_endpoint.cpp

…默认的闭门定时器过于频繁、所有定时器回调都在同一P线程上串行、macOS模拟在功能上并不等效。2、移除固定数组，改用unordered_map；3、为itimerspec添加归一化；4、解决CqSidOp的sid相同而event不同时添加失败的问题

…lanced (apache#3433)

Reject re-initialization once Channel::Init() has succeeded. This ensures
a Channel instance only inserts into SocketMap at most once and preserves
its options and signature intact, guaranteeing that ~Channel() always
balances the insertion without requiring extra state tracking. Failed inits
before the first successful initialization can still be retried.

Discover zlib explicitly with find_package(ZLIB REQUIRED) and link against the ZLIB::ZLIB imported target instead of the bare z library. This allows CMake to use the zlib configuration selected by the active toolchain.

Reject a fragmented stream message when its accumulated payload exceeds
max_body_size. Release buffered fragments and close the stream with
EMSGSIZE.

Cover the boundary and rejection paths through a complete client/server RPC
stream.

…leak (apache#2793) (apache#3491)

* Cache CI build outputs

* Report ccache statistics in CI

* Run CMake configurations in parallel

* Run Bazel tests on every CI build

* Run Make configurations in parallel

* Run GCC protobuf builds in parallel

* Consolidate CI dependency installation

* Run Clang protobuf builds in parallel

* Upgrade checkout action to Node.js 24

* Limit CI concurrency per ASF policy

Merge the GCC and Clang Protobuf configurations into one matrix and cap its
parallelism at two. Cap the Make and CMake matrices at two jobs each.

This preserves all build configurations while limiting the combined Linux,
macOS, and license job concurrency to 17, below the ASF limit of 20.

Policy: https://infra.apache.org/github-actions-policy.html

…默认的闭门定时器过于频繁、所有定时器回调都在同一P线程上串行、macOS模拟在功能上并不等效。2、移除固定数组，改用unordered_map；3、为itimerspec添加归一化；4、解决CqSidOp的sid相同而event不同时添加失败的问题

…默认的闭门定时器过于频繁、所有定时器回调都在同一P线程上串行、macOS模拟在功能上并不等效。2、移除固定数组，改用unordered_map；3、为itimerspec添加归一化；4、解决CqSidOp的sid相同而event不同时添加失败的问题

# Conflicts:
#	src/brpc/ubshm/timer/timer_mgr.cpp
#	src/brpc/ubshm/timer/timer_mgr.h