mirror of
https://github.com/shadowsocks/shadowsocks-libev.git
synced 2026-10-20 21:43:41 +00:00
Max Lv
bcb3731968
* Enable C++20 alongside C11 in the build Add CXX to the project with C++20 (no extensions) and build C++ sources with -Wextra -fno-exceptions -fno-rtti -fno-threadsafe-statics on top of the existing warning flags. Give every toolchain a C++ compiler: the zig Windows toolchain, the static macOS/Windows CI jobs, the static musl image (clang++ plus libstdc++ headers) and the RPM spec. * Add C++20 ownership and allocation core Header-only primitives for the no-heap-after-startup design: Result/Status, Region, ObjectPool with PoolPtr (std::unique_ptr with a pool deleter), generation-checked Handle and asynchronous close support, intrusive RefPtr, FixedBuffer, MonotonicArena, FixedHashMap and FixedLru, IntrusiveList, and a bounded FixedHeap for third-party allocator hooks. Unit tests cover each primitive (test_core_*). scripts/check_no_heap.py rejects heap allocation in C++ sources under src/ and runs as a ctest. clang-tidy now also analyses C++ sources and the core headers. * Add heap allocation audit for relayed connections alloc_counter is a preloadable malloc counter (glibc, macOS) that writes a snapshot on SIGUSR2. measure_alloc.py warms ss-local and ss-server up, snapshots both, relays more connections and reports allocations per connection. It runs report-only as the alloc_audit_report ctest. interop.peers() now yields the started processes. * Document the C++20 port and allocation baseline docs/cpp-core.md describes the language profile, the core primitives, the phase plan and the measured C baseline (77-89 allocations per connection in ss-server, 27-39 in ss-local). The compatibility contract now keeps the C11 public header instead of a C11 code base. CLAUDE.md drops stale libev, submodule and gnu99 references. * Fix CI for the C++ core: libstdc++ headers, static unwinder, newer clang - docker/static: Alpine's libstdc++ headers come with g++, and the C++ tests' static libstdc++ needs an unwinder that compiler-rt lacks; add g++ and llvm-libunwind. - FixedBuffer: drop the unused kCapacity (clang-tidy 18 reports it as a dynamically initialized header static). - ss-server on Windows: manager_addr was only read in POSIX-only code, which newer clang rejects (-Wunused-but-set-global); say that the option is ignored there. * CI: allow running the test and build workflows by hand Stacked PRs target their parent branch, which these workflows do not trigger on; workflow_dispatch lets each layer run the full matrix. * CI: let clang-tidy ignore GCC-only warning flags The compile database comes from a GCC build, whose flags (for example -Wno-class-memaccess) clang-tidy does not know and reports as errors.
83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
/* SPDX-License-Identifier: GPL-3.0-or-later */
|
|
#include <cstring>
|
|
#include <string_view>
|
|
|
|
#include "core/buffer.hpp"
|
|
#include "test_helpers.hpp"
|
|
|
|
namespace {
|
|
|
|
ss::ConstBytes bytes(std::string_view s)
|
|
{
|
|
return ss::as_bytes(s.data(), s.size());
|
|
}
|
|
|
|
bool equals(ss::ConstBytes b, std::string_view s)
|
|
{
|
|
return b.size() == s.size() && std::memcmp(b.data(), s.data(), s.size()) == 0;
|
|
}
|
|
|
|
void test_append_consume()
|
|
{
|
|
ss::FixedBuffer<8> buf;
|
|
SS_CHECK(buf.empty() && buf.capacity() == 8);
|
|
SS_CHECK(buf.append(bytes("hello")));
|
|
SS_CHECK(equals(buf.readable(), "hello"));
|
|
SS_CHECK(buf.consume(2));
|
|
SS_CHECK(equals(buf.readable(), "llo"));
|
|
SS_CHECK(!buf.consume(4));
|
|
// Appending past the tail compacts first.
|
|
SS_CHECK(buf.append(bytes("world")));
|
|
SS_CHECK(equals(buf.readable(), "lloworld"));
|
|
SS_CHECK(!buf.append(bytes("x")));
|
|
SS_CHECK(buf.consume(8) && buf.empty());
|
|
}
|
|
|
|
void test_commit_writable()
|
|
{
|
|
ss::FixedBuffer<4> buf;
|
|
auto w = buf.writable();
|
|
SS_CHECK(w.size() == 4);
|
|
std::memcpy(w.data(), "abcd", 4);
|
|
SS_CHECK(buf.commit(4));
|
|
SS_CHECK(buf.full() && buf.writable().empty());
|
|
SS_CHECK(!buf.commit(1));
|
|
SS_CHECK(equals(buf.readable(), "abcd"));
|
|
}
|
|
|
|
void test_prepend()
|
|
{
|
|
ss::FixedBuffer<10> buf;
|
|
SS_CHECK(buf.append(bytes("data")));
|
|
// No headroom: payload shifts right.
|
|
SS_CHECK(buf.prepend(bytes("hdr")));
|
|
SS_CHECK(equals(buf.readable(), "hdrdata"));
|
|
SS_CHECK(buf.consume(3));
|
|
// Headroom from the consumed bytes is reused in place.
|
|
SS_CHECK(buf.prepend(bytes("ab")));
|
|
SS_CHECK(equals(buf.readable(), "abdata"));
|
|
SS_CHECK(!buf.prepend(bytes("12345")));
|
|
SS_CHECK(equals(buf.readable(), "abdata"));
|
|
}
|
|
|
|
void test_assign_wipe()
|
|
{
|
|
ss::FixedBuffer<4> buf;
|
|
SS_CHECK(!buf.assign(bytes("toolong")));
|
|
SS_CHECK(buf.assign(bytes("key")));
|
|
SS_CHECK(equals(buf.readable(), "key"));
|
|
buf.wipe();
|
|
SS_CHECK(buf.empty());
|
|
}
|
|
|
|
} // namespace
|
|
|
|
int main()
|
|
{
|
|
SS_RUN(test_append_consume);
|
|
SS_RUN(test_commit_writable);
|
|
SS_RUN(test_prepend);
|
|
SS_RUN(test_assign_wipe);
|
|
return 0;
|
|
}
|