Connection pool

Added any_connection and any_address
Added connection_pool and pooled_connection
Added thread_safety tests
Added defaults.hpp header

close 19

.clangd

@@ -0,0 +1,3 @@
+Diagnostics:
+  ClangTidy:
+    Remove: bugprone-unused-return-value

.drone.star

@@ -6,8 +6,8 @@
 #
 
 _triggers = { "branch": [ "master", "develop", "drone*", "feature/*", "bugfix/*", "fix/*", "pr/*" ] }
-_container_tag = '454e58d36a2e801a1a6b4e9fd2f995c3087740b1'
-_win_container_tag = '454e58d36a2e801a1a6b4e9fd2f995c3087740b1'
+_container_tag = 'd34a92a9b9702a0a5e2b9ab4a635f7b077229626'
+_win_container_tag = 'd34a92a9b9702a0a5e2b9ab4a635f7b077229626'
 
 
 def _image(name):
@@ -24,7 +24,7 @@ def _b2_command(
     variant,
     stdlib='native',
     address_model='64',
-    server_host='localhost',
+    server_host='127.0.0.1',
     separate_compilation=1,
     address_sanitizer=0,
     undefined_sanitizer=0
@@ -56,7 +56,7 @@ def _cmake_command(
     install_tests=1,
     generator='Ninja',
     db='mysql8',
-    server_host='localhost'
+    server_host='127.0.0.1'
 ):
     return 'python tools/ci.py ' + \
                 '--build-kind=cmake ' + \
@@ -175,7 +175,7 @@ def windows_b2(
         cxxstd=cxxstd,
         variant=variant,
         address_model=address_model,
-        server_host='localhost'
+        server_host='127.0.0.1'
     )
     return _pipeline(name=name, image=image, os='windows', command=command, db=None)
 
@@ -218,7 +218,7 @@ def windows_cmake(
         build_shared_libs=build_shared_libs,
         generator='Visual Studio 17 2022',
         db='mysql8',
-        server_host='localhost'
+        server_host='127.0.0.1'
     )
     return _pipeline(
         name=name,

.github/workflows/build-code.yml

@@ -20,8 +20,9 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - run: |
-          unlink /usr/local/bin/python
+          unlink /usr/local/bin/python || echo "/usr/local/bin/python not found"
           ln -s /usr/local/bin/python3 /usr/local/bin/python
+          python -m pip install requests
           source tools/setup_db_osx.sh
           python tools/ci.py \
             --build-kind=b2 \

CMakeLists.txt

@@ -28,14 +28,13 @@ add_library(Boost::mysql ALIAS boost_mysql)
 # Dependencies
 if (BOOST_MYSQL_IS_ROOT)
     # If we're the root project, error if a dependency is not found
-    find_package(Boost ${BOOST_MYSQL_VERSION} REQUIRED COMPONENTS headers system)
+    find_package(Boost ${BOOST_MYSQL_VERSION} REQUIRED COMPONENTS headers)
     find_package(Threads REQUIRED)
     find_package(OpenSSL REQUIRED)
     target_link_libraries(
         boost_mysql
         INTERFACE
         Boost::headers
-        Boost::system
         Threads::Threads
         OpenSSL::Crypto
         OpenSSL::SSL
@@ -64,12 +63,14 @@ else()
         Boost::config
         Boost::core
         Boost::describe
+        Boost::endian
+        Boost::intrusive
+        Boost::lexical_cast
         Boost::mp11
+        Boost::optional
         Boost::system
         Boost::throw_exception
         Boost::variant2
-        Boost::endian
-        Boost::lexical_cast
         Threads::Threads
         OpenSSL::Crypto
         OpenSSL::SSL
@@ -117,4 +118,8 @@ if(BUILD_TESTING)
         add_subdirectory(example)
     endif()
 
+    # We don't run benchmarks, but we build them to prevent code rotting
+    if (BOOST_MYSQL_IS_ROOT)
+        add_subdirectory(bench)
+    endif()
 endif()

bench/CMakeLists.txt

@@ -0,0 +1,18 @@
+#
+# Copyright (c) 2019-2023 Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
+#
+# Distributed under the Boost Software License, Version 1.0. (See accompanying
+# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+#
+
+
+add_executable(
+    boost_mysql_bench_connection_pool
+    connection_pool.cpp
+)
+
+target_link_libraries(
+    boost_mysql_bench_connection_pool
+    PUBLIC
+    boost_mysql_compiled
+)