added a parallel execution

.clang-format

@@ -1,39 +1,68 @@
----
-AlignAfterOpenBracket: Align
-AlignConsecutiveAssignments: 'true'
-AlignEscapedNewlines: Right
-AlignTrailingComments: 'true'
-AllowShortFunctionsOnASingleLine: 'true'
-AllowShortBlocksOnASingleLine: 'true'
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-IndentCaseLabels: 'false'
-IndentWidth: '4'
-IndentWrappedFunctionNames: 'false'
-KeepEmptyLinesAtTheStartOfBlocks: 'false'
+BasedOnStyle: Mozilla
 Language: Cpp
-MaxEmptyLinesToKeep: '1'
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-...
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+AllowShortIfStatementsOnASingleLine: true
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+BreakBeforeConceptDeclarations: Always
+ColumnLimit: 80
+ContinuationIndentWidth: 2
+Cpp11BracedListStyle: true
+FixNamespaceComments: true
+IncludeBlocks: Regroup
+IncludeCategories:
+  # Seastar files (with angles)
+  - Regex:    '^<seastar/'
+    Priority: 2
+  # Other libraries
+  - Regex:    '^<.+/'
+    Priority: 4
+  # Std header files (with angles)
+  - Regex:    '^<'
+    Priority: 5
+  # Internal headers (with quotes)
+  - Regex:    '.h'
+    Priority: 1
+IndentCaseLabels: false
+IndentRequires: false
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+IndentWidth: 4
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+PenaltyBreakBeforeFirstCallParameter: 10
+PenaltyReturnTypeOnItsOwnLine: 60
+RequiresClausePosition: OwnLine
+RequiresExpressionIndentation: OuterScope
+---
+Language: JavaScript
+# Use 100 columns for JS.
+ColumnLimit: 80
+---
+Language: Java
+ColumnLimit: 80
+AccessModifierOffset: -4
+AlignAfterOpenBracket: AlwaysBreak
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: true
+AllowShortIfStatementsOnASingleLine: true
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterDefinitionReturnType: None
+AlwaysBreakAfterReturnType: None
+BreakBeforeBinaryOperators: All
+BreakBeforeBraces: Attach
+---
+Language: Proto
+BasedOnStyle: Google
+ColumnLimit: 80
+IndentWidth: 4

compile_commands.json

@@ -0,0 +1 @@
+build/compile_commands.json

src/noidb.cc

@@ -2,13 +2,23 @@
 #include <seastar/core/coroutine.hh>
 #include <seastar/util/log.hh>
 
-//using namespace seastar;
+// using namespace seastar;
 
 seastar::logger lg("hanoidb");
 
-static seastar:future<> hello_from_all_cores() {
-  co_await seastar:smp::invoke_on_all([]() -> seastar::future<> {
-      lg.info("Hello from every core");
+static seastar::future<> hello_from_all_cores_serial() {
+    for (unsigned i = 0; i < seastar::smp::count; ++i) {
+        co_await seastar::smp::submit_to(
+          i, [] { lg.info("serial - Hello from every core"); });
+    };
+    co_return;
+}
+
+static seastar::future<> hello_from_all_cores_parallel() {
+    co_await seastar::smp::invoke_on_all(
+      []() -> seastar::future<> {
+        lg.info("parallel - Hello from every core");
+        co_return;
       });
     co_return;
 }
@@ -16,8 +26,9 @@ static seastar:future<> hello_from_all_cores() {
 int main(int argc, char** argv) {
     seastar::app_template app;
 
-  return app.run(argc, argv, [&] () -> seastar::future<int> {
-      co_await hello_from_all_cores();
+    return app.run(argc, argv, [&]() -> seastar::future<int> {
+        co_await hello_from_all_cores_serial();
+        co_await hello_from_all_cores_parallel();
         co_return 0;
     });
 }