feat: working c implementation, but bizarre performance

.gitignore

@@ -1,3 +1,4 @@
 **/target/
 **/zig-out/
 **/zig-cache/
+src/iouring/c/server

src/iouring/c/.clang-format

@@ -1,7 +1,7 @@
 ---
-Language:        C
-# BasedOnStyle:  LLVM
-AccessModifierOffset: -2
+Language:        Cpp
+# BasedOnStyle:  Google
+AccessModifierOffset: -1
 AlignAfterOpenBracket: Align
 AlignArrayOfStructures: None
 AlignConsecutiveAssignments:
@@ -28,37 +28,40 @@ AlignConsecutiveMacros:
   AcrossComments:  false
   AlignCompound:   false
   PadOperators:    false
-AlignEscapedNewlines: Right
+AlignEscapedNewlines: Left
 AlignOperands:   Align
-AlignTrailingComments: true
+AlignTrailingComments:
+  Kind:            Always
+  OverEmptyLines:  0
 AllowAllArgumentsOnNextLine: true
 AllowAllParametersOfDeclarationOnNextLine: true
-AllowShortEnumsOnASingleLine: true
 AllowShortBlocksOnASingleLine: Never
 AllowShortCaseLabelsOnASingleLine: false
+AllowShortEnumsOnASingleLine: true
 AllowShortFunctionsOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: WithoutElse
 AllowShortLambdasOnASingleLine: All
-AllowShortIfStatementsOnASingleLine: Never
-AllowShortLoopsOnASingleLine: false
+AllowShortLoopsOnASingleLine: true
 AlwaysBreakAfterDefinitionReturnType: None
 AlwaysBreakAfterReturnType: None
-AlwaysBreakBeforeMultilineStrings: false
-AlwaysBreakTemplateDeclarations: MultiLine
+AlwaysBreakBeforeMultilineStrings: true
+AlwaysBreakTemplateDeclarations: Yes
 AttributeMacros:
   - __capability
 BinPackArguments: true
 BinPackParameters: true
+BitFieldColonSpacing: Both
 BraceWrapping:
   AfterCaseLabel:  false
   AfterClass:      false
   AfterControlStatement: Never
   AfterEnum:       false
+  AfterExternBlock: false
   AfterFunction:   false
   AfterNamespace:  false
   AfterObjCDeclaration: false
   AfterStruct:     false
   AfterUnion:      false
-  AfterExternBlock: false
   BeforeCatch:     false
   BeforeElse:      false
   BeforeLambdaBody: false
@@ -67,104 +70,147 @@ BraceWrapping:
   SplitEmptyFunction: true
   SplitEmptyRecord: true
   SplitEmptyNamespace: true
+BreakAfterAttributes: Never
+BreakAfterJavaFieldAnnotations: false
+BreakArrays:     true
 BreakBeforeBinaryOperators: None
 BreakBeforeConceptDeclarations: Always
 BreakBeforeBraces: Attach
-BreakBeforeInheritanceComma: false
-BreakInheritanceList: BeforeColon
+BreakBeforeInlineASMColon: OnlyMultiline
 BreakBeforeTernaryOperators: true
-BreakConstructorInitializersBeforeComma: false
 BreakConstructorInitializers: BeforeColon
-BreakAfterJavaFieldAnnotations: false
+BreakInheritanceList: BeforeColon
 BreakStringLiterals: true
 ColumnLimit:     80
 CommentPragmas:  '^ IWYU pragma:'
-QualifierAlignment: Leave
 CompactNamespaces: false
 ConstructorInitializerIndentWidth: 4
 ContinuationIndentWidth: 4
 Cpp11BracedListStyle: true
-DeriveLineEnding: true
-DerivePointerAlignment: false
+DerivePointerAlignment: true
 DisableFormat:   false
 EmptyLineAfterAccessModifier: Never
 EmptyLineBeforeAccessModifier: LogicalBlock
 ExperimentalAutoDetectBinPacking: false
-PackConstructorInitializers: BinPack
-BasedOnStyle:    ''
-ConstructorInitializerAllOnOneLineOrOnePerLine: false
-AllowAllConstructorInitializersOnNextLine: true
 FixNamespaceComments: true
 ForEachMacros:
   - foreach
   - Q_FOREACH
   - BOOST_FOREACH
 IfMacros:
   - KJ_IF_MAYBE
-IncludeBlocks:   Preserve
+IncludeBlocks:   Regroup
 IncludeCategories:
-  - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
+  - Regex:           '^<ext/.*\.h>'
     Priority:        2
     SortPriority:    0
     CaseSensitive:   false
-  - Regex:           '^(<|"(gtest|gmock|isl|json)/)'
-    Priority:        3
+  - Regex:           '^<.*\.h>'
+    Priority:        1
+    SortPriority:    0
+    CaseSensitive:   false
+  - Regex:           '^<.*'
+    Priority:        2
     SortPriority:    0
     CaseSensitive:   false
   - Regex:           '.*'
-    Priority:        1
+    Priority:        3
     SortPriority:    0
     CaseSensitive:   false
-IncludeIsMainRegex: '(Test)?$'
+IncludeIsMainRegex: '([-_](test|unittest))?$'
 IncludeIsMainSourceRegex: ''
 IndentAccessModifiers: false
-IndentCaseLabels: false
 IndentCaseBlocks: false
+IndentCaseLabels: true
+IndentExternBlock: AfterExternBlock
 IndentGotoLabels: true
 IndentPPDirectives: None
-IndentExternBlock: AfterExternBlock
 IndentRequiresClause: true
 IndentWidth:     4
 IndentWrappedFunctionNames: false
 InsertBraces:    false
+InsertNewlineAtEOF: false
 InsertTrailingCommas: None
+IntegerLiteralSeparator:
+  Binary:          0
+  BinaryMinDigits: 0
+  Decimal:         0
+  DecimalMinDigits: 0
+  Hex:             0
+  HexMinDigits:    0
 JavaScriptQuotes: Leave
 JavaScriptWrapImports: true
-KeepEmptyLinesAtTheStartOfBlocks: true
+KeepEmptyLinesAtTheStartOfBlocks: false
 LambdaBodyIndentation: Signature
+LineEnding:      DeriveLF
 MacroBlockBegin: ''
 MacroBlockEnd:   ''
 MaxEmptyLinesToKeep: 1
 NamespaceIndentation: None
-ObjCBinPackProtocolList: Auto
+ObjCBinPackProtocolList: Never
 ObjCBlockIndentWidth: 2
 ObjCBreakBeforeNestedBlockParam: true
 ObjCSpaceAfterProperty: false
 ObjCSpaceBeforeProtocolList: true
+PackConstructorInitializers: NextLine
 PenaltyBreakAssignment: 2
-PenaltyBreakBeforeFirstCallParameter: 19
+PenaltyBreakBeforeFirstCallParameter: 1
 PenaltyBreakComment: 300
 PenaltyBreakFirstLessLess: 120
 PenaltyBreakOpenParenthesis: 0
 PenaltyBreakString: 1000
 PenaltyBreakTemplateDeclaration: 10
 PenaltyExcessCharacter: 1000000
-PenaltyReturnTypeOnItsOwnLine: 60
 PenaltyIndentedWhitespace: 0
-PointerAlignment: Right
+PenaltyReturnTypeOnItsOwnLine: 200
+PointerAlignment: Left
 PPIndentWidth:   -1
+QualifierAlignment: Leave
+RawStringFormats:
+  - Language:        Cpp
+    Delimiters:
+      - cc
+      - CC
+      - cpp
+      - Cpp
+      - CPP
+      - 'c++'
+      - 'C++'
+    CanonicalDelimiter: ''
+    BasedOnStyle:    google
+  - Language:        TextProto
+    Delimiters:
+      - pb
+      - PB
+      - proto
+      - PROTO
+    EnclosingFunctions:
+      - EqualsProto
+      - EquivToProto
+      - PARSE_PARTIAL_TEXT_PROTO
+      - PARSE_TEST_PROTO
+      - PARSE_TEXT_PROTO
+      - ParseTextOrDie
+      - ParseTextProtoOrDie
+      - ParseTestProto
+      - ParsePartialTestProto
+    CanonicalDelimiter: pb
+    BasedOnStyle:    google
 ReferenceAlignment: Pointer
 ReflowComments:  true
 RemoveBracesLLVM: false
+RemoveSemicolon: false
 RequiresClausePosition: OwnLine
+RequiresExpressionIndentation: OuterScope
 SeparateDefinitionBlocks: Leave
 ShortNamespaceLines: 1
 SortIncludes:    CaseSensitive
 SortJavaStaticImport: Before
-SortUsingDeclarations: true
+SortUsingDeclarations: LexicographicNumeric
 SpaceAfterCStyleCast: false
 SpaceAfterLogicalNot: false
 SpaceAfterTemplateKeyword: true
+SpaceAroundPointerQualifiers: Default
 SpaceBeforeAssignmentOperators: true
 SpaceBeforeCaseColon: false
 SpaceBeforeCpp11BracedList: false
@@ -181,11 +227,11 @@ SpaceBeforeParensOptions:
   AfterRequiresInClause: false
   AfterRequiresInExpression: false
   BeforeNonEmptyParentheses: false
-SpaceAroundPointerQualifiers: Default
 SpaceBeforeRangeBasedForLoopColon: true
+SpaceBeforeSquareBrackets: false
 SpaceInEmptyBlock: false
 SpaceInEmptyParentheses: false
-SpacesBeforeTrailingComments: 1
+SpacesBeforeTrailingComments: 2
 SpacesInAngles:  Never
 SpacesInConditionalStatement: false
 SpacesInContainerLiterals: true
@@ -195,22 +241,19 @@ SpacesInLineCommentPrefix:
   Maximum:         -1
 SpacesInParentheses: false
 SpacesInSquareBrackets: false
-SpaceBeforeSquareBrackets: false
-BitFieldColonSpacing: Both
-Standard:        Latest
+Standard:        Auto
 StatementAttributeLikeMacros:
   - Q_EMIT
 StatementMacros:
   - Q_UNUSED
   - QT_REQUIRE_VERSION
-TabWidth:        4
-UseCRLF:         false
+TabWidth:        8
 UseTab:          Never
 WhitespaceSensitiveMacros:
-  - STRINGIZE
-  - PP_STRINGIZE
   - BOOST_PP_STRINGIZE
-  - NS_SWIFT_NAME
   - CF_SWIFT_NAME
+  - NS_SWIFT_NAME
+  - PP_STRINGIZE
+  - STRINGIZE
 ...
 

src/iouring/c/Makefile

@@ -1,4 +1,5 @@
-CFLAGS ?= -g -O2 -pedantic -Wall
+CC = clang
+CFLAGS ?= -g -O3 -flto --std=c17 -pedantic -Wall
 LDFLAGS ?=
 override LDFLAGS += -luring
 

src/iouring/c/compile_commands.json

@@ -0,0 +1,92 @@
+[
+  {
+    "arguments": [
+      "/usr/bin/clang",
+      "-c",
+      "-g",
+      "-O2",
+      "-flto",
+      "--std=c17",
+      "-pedantic",
+      "-Wall",
+      "-o",
+      "server",
+      "server.c"
+    ],
+    "directory": "/home/zorbik/Code/uring/src/iouring/c",
+    "file": "/home/zorbik/Code/uring/src/iouring/c/server.c",
+    "output": "/home/zorbik/Code/uring/src/iouring/c/server"
+  },
+  {
+    "arguments": [
+      "/usr/bin/clang-16",
+      "-cc1",
+      "-triple",
+      "x86_64-pc-linux-gnu",
+      "-emit-llvm-bc",
+      "-flto=full",
+      "-flto-unit",
+      "-disable-free",
+      "-clear-ast-before-backend",
+      "-disable-llvm-verifier",
+      "-discard-value-names",
+      "-main-file-name",
+      "-mrelocation-model",
+      "pic",
+      "-pic-level",
+      "2",
+      "-pic-is-pie",
+      "-mframe-pointer=none",
+      "-fmath-errno",
+      "-ffp-contract=on",
+      "-fno-rounding-math",
+      "-mconstructor-aliases",
+      "-funwind-tables=2",
+      "-target-cpu",
+      "x86-64",
+      "-tune-cpu",
+      "generic",
+      "-mllvm",
+      "-treat-scalable-fixed-error-as-warning",
+      "-debug-info-kind=constructor",
+      "-dwarf-version=5",
+      "-debugger-tuning=gdb",
+      "-fcoverage-compilation-dir=/home/zorbik/Code/uring/src/iouring/c",
+      "-resource-dir",
+      "/usr/lib/clang/16",
+      "-internal-isystem",
+      "/usr/lib/clang/16/include",
+      "-internal-isystem",
+      "/usr/local/include",
+      "-internal-isystem",
+      "/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/13.2.1/../../../../x86_64-pc-linux-gnu/include",
+      "-internal-externc-isystem",
+      "/include",
+      "-internal-externc-isystem",
+      "/usr/include",
+      "-O2",
+      "-Wall",
+      "-pedantic",
+      "--std=c17",
+      "-fdebug-compilation-dir=/home/zorbik/Code/uring/src/iouring/c",
+      "-ferror-limit",
+      "19",
+      "-stack-protector",
+      "2",
+      "-fgnuc-version=4.2.1",
+      "-fcolor-diagnostics",
+      "-vectorize-loops",
+      "-vectorize-slp",
+      "-faddrsig",
+      "-D__GCC_HAVE_DWARF2_CFI_ASM=1",
+      "-x",
+      "c",
+      "-o",
+      "/tmp/server-4f9675.o",
+      "server.c"
+    ],
+    "directory": "/home/zorbik/Code/uring/src/iouring/c",
+    "file": "/home/zorbik/Code/uring/src/iouring/c/server.c",
+    "output": "/tmp/server-4f9675.o"
+  }
+]