Continuation zero alloc enqueue

.github/workflows/ci.yml

@@ -12,13 +12,12 @@ name: CI
 
 on:
   pull_request:
-    branches: [ master, develop, develop-2 ]
+    branches: [ master, develop* ]
   workflow_dispatch:
   push:
     branches:
       - master
-      - develop
-      - develop-2
+      - develop*
       - bugfix/**
       - feature/**
       - fix/**
@@ -96,11 +95,31 @@ jobs:
             liburing-dev
             curl zip unzip tar pkg-config
 
+      # Use the capy branch with the same name as this build's branch
+      # (for pull requests: the source branch, then the target branch);
+      # fall back to capy's default branch.
+      - name: Resolve Capy branch
+        id: capy-ref
+        shell: bash
+        run: |
+          url=https://github.com/cppalliance/capy.git
+          ref=
+          for candidate in "${{ github.head_ref }}" "${{ github.base_ref }}" "${{ github.ref_name }}"; do
+            if [ -n "$candidate" ] && git ls-remote --exit-code --heads "$url" "$candidate" > /dev/null; then
+              ref="$candidate"
+              break
+            fi
+          done
+          if [ -z "$ref" ]; then
+            ref=$(git ls-remote --symref "$url" HEAD | awk '/^ref:/ { sub("refs/heads/", "", $2); print $2 }')
+          fi
+          echo "ref=$ref" >> "$GITHUB_OUTPUT"
+
       - name: Clone Capy
         uses: actions/checkout@v4
         with:
           repository: cppalliance/capy
-          ref: ${{ (github.ref_name == 'master' && github.ref_name) || 'develop' }}
+          ref: ${{ steps.capy-ref.outputs.ref }}
           path: capy-root
 
       # Test dependency of corosio
@@ -768,11 +787,31 @@ jobs:
         with:
           path: corosio-root
 
+      # Use the capy branch with the same name as this build's branch
+      # (for pull requests: the source branch, then the target branch);
+      # fall back to capy's default branch.
+      - name: Resolve Capy branch
+        id: capy-ref
+        shell: bash
+        run: |
+          url=https://github.com/cppalliance/capy.git
+          ref=
+          for candidate in "${{ github.head_ref }}" "${{ github.base_ref }}" "${{ github.ref_name }}"; do
+            if [ -n "$candidate" ] && git ls-remote --exit-code --heads "$url" "$candidate" > /dev/null; then
+              ref="$candidate"
+              break
+            fi
+          done
+          if [ -z "$ref" ]; then
+            ref=$(git ls-remote --symref "$url" HEAD | awk '/^ref:/ { sub("refs/heads/", "", $2); print $2 }')
+          fi
+          echo "ref=$ref" >> "$GITHUB_OUTPUT"
+
       - name: Clone Capy
         uses: actions/checkout@v4
         with:
           repository: cppalliance/capy
-          ref: ${{ (github.ref_name == 'master' && github.ref_name) || 'develop' }}
+          ref: ${{ steps.capy-ref.outputs.ref }}
           path: capy-root
 
       - name: Clone Boost

.github/workflows/code-coverage.yml

@@ -22,7 +22,7 @@ on:
   push:
     branches:
       - master
-      - develop
+      - develop*
     paths:
       - 'src/**'
       - 'include/**'
@@ -150,11 +150,31 @@ jobs:
           echo "CMAKE_WOLFSSL_INCLUDE=${vcpkg_installed}/include" >> $GITHUB_ENV
           echo "CMAKE_WOLFSSL_LIBRARY=${vcpkg_installed}/lib/libwolfssl.a" >> $GITHUB_ENV
 
+      # Use the capy branch with the same name as this build's branch
+      # (for pull requests: the source branch, then the target branch);
+      # fall back to capy's default branch.
+      - name: Resolve Capy branch
+        id: capy-ref
+        shell: bash
+        run: |
+          url=https://github.com/cppalliance/capy.git
+          ref=
+          for candidate in "${{ github.head_ref }}" "${{ github.base_ref }}" "${{ github.ref_name }}"; do
+            if [ -n "$candidate" ] && git ls-remote --exit-code --heads "$url" "$candidate" > /dev/null; then
+              ref="$candidate"
+              break
+            fi
+          done
+          if [ -z "$ref" ]; then
+            ref=$(git ls-remote --symref "$url" HEAD | awk '/^ref:/ { sub("refs/heads/", "", $2); print $2 }')
+          fi
+          echo "ref=$ref" >> "$GITHUB_OUTPUT"
+
       - name: Clone Capy
         uses: actions/checkout@v6
         with:
           repository: cppalliance/capy
-          ref: ${{ (github.ref_name == 'master' && github.ref_name) || 'develop' }}
+          ref: ${{ steps.capy-ref.outputs.ref }}
           path: capy-root
 
       - name: Clone Boost
@@ -371,11 +391,31 @@ jobs:
           echo "CMAKE_WOLFSSL_LIBRARY=${vcpkg_installed}/lib/libwolfssl.a" >> $GITHUB_ENV
           echo "CMAKE_OPENSSL_ROOT=C:/msys64/mingw64" >> $GITHUB_ENV
 
+      # Use the capy branch with the same name as this build's branch
+      # (for pull requests: the source branch, then the target branch);
+      # fall back to capy's default branch.
+      - name: Resolve Capy branch
+        id: capy-ref
+        shell: bash
+        run: |
+          url=https://github.com/cppalliance/capy.git
+          ref=
+          for candidate in "${{ github.head_ref }}" "${{ github.base_ref }}" "${{ github.ref_name }}"; do
+            if [ -n "$candidate" ] && git ls-remote --exit-code --heads "$url" "$candidate" > /dev/null; then
+              ref="$candidate"
+              break
+            fi
+          done
+          if [ -z "$ref" ]; then
+            ref=$(git ls-remote --symref "$url" HEAD | awk '/^ref:/ { sub("refs/heads/", "", $2); print $2 }')
+          fi
+          echo "ref=$ref" >> "$GITHUB_OUTPUT"
+
       - name: Clone Capy
         uses: actions/checkout@v6
         with:
           repository: cppalliance/capy
-          ref: ${{ (github.ref_name == 'master' && github.ref_name) || 'develop' }}
+          ref: ${{ steps.capy-ref.outputs.ref }}
           path: capy-root
 
       - name: Clone Boost

.github/workflows/docs.yml

@@ -13,7 +13,7 @@ on:
   push:
     branches:
       - master
-      - develop
+      - develop*
     paths:
       - 'doc/**'
       - '*.adoc'
@@ -42,11 +42,31 @@ jobs:
         with:
           path: corosio-root
 
+      # Use the capy branch with the same name as this build's branch
+      # (for pull requests: the source branch, then the target branch);
+      # fall back to capy's default branch.
+      - name: Resolve Capy branch
+        id: capy-ref
+        shell: bash
+        run: |
+          url=https://github.com/cppalliance/capy.git
+          ref=
+          for candidate in "${{ github.head_ref }}" "${{ github.base_ref }}" "${{ github.ref_name }}"; do
+            if [ -n "$candidate" ] && git ls-remote --exit-code --heads "$url" "$candidate" > /dev/null; then
+              ref="$candidate"
+              break
+            fi
+          done
+          if [ -z "$ref" ]; then
+            ref=$(git ls-remote --symref "$url" HEAD | awk '/^ref:/ { sub("refs/heads/", "", $2); print $2 }')
+          fi
+          echo "ref=$ref" >> "$GITHUB_OUTPUT"
+
       - name: Clone Capy
         uses: actions/checkout@v4
         with:
           repository: cppalliance/capy
-          ref: ${{ (github.ref_name == 'master' && github.ref_name) || 'develop' }}
+          ref: ${{ steps.capy-ref.outputs.ref }}
           path: capy-root
 
       - name: Clone Boost

example/client/http_client.cpp

@@ -12,7 +12,6 @@
 #include <boost/capy/task.hpp>
 #include <boost/capy/ex/run_async.hpp>
 #include <boost/capy/buffers.hpp>
-#include <boost/capy/buffers/string_dynamic_buffer.hpp>
 #include <boost/capy/error.hpp>
 #include <boost/capy/read.hpp>
 #include <boost/capy/write.hpp>
@@ -40,13 +39,22 @@ do_request(
             stream, capy::const_buffer(request.data(), request.size())); ec)
         throw std::system_error(ec);
 
-    // Read the entire response until EOF
+    // Read the entire response until EOF, one fixed chunk at a time
     std::string response;
-    auto [ec, n] = co_await capy::read(
-            stream, capy::string_dynamic_buffer(&response));
-    // EOF is expected when server closes connection
-    if (ec && ec != capy::error::eof)
-        throw std::system_error(ec);
+    for (;;)
+    {
+        char chunk[4096];
+        auto [ec, n] = co_await capy::read(
+            stream, capy::mutable_buffer(chunk, sizeof(chunk)));
+        response.append(chunk, n);
+        if (ec)
+        {
+            // EOF is expected when the server closes the connection
+            if (ec != capy::error::eof)
+                throw std::system_error(ec);
+            break;
+        }
+    }
 
     std::cout << response << std::endl;
 }

example/https-client/https_client.cpp

@@ -13,7 +13,6 @@
 #include <boost/capy/task.hpp>
 #include <boost/capy/ex/run_async.hpp>
 #include <boost/capy/buffers.hpp>
-#include <boost/capy/buffers/string_dynamic_buffer.hpp>
 #include <boost/capy/error.hpp>
 #include <boost/capy/read.hpp>
 #include <boost/capy/write.hpp>
@@ -42,13 +41,22 @@ do_request(
             stream, capy::const_buffer(request.data(), request.size())); ec)
         throw std::system_error(ec);
 
-    // Read entire response until EOF
+    // Read the entire response until EOF, one fixed chunk at a time
     std::string response;
-    auto [ec, n] = co_await capy::read(
-            stream, capy::string_dynamic_buffer(&response));
-    // EOF is expected when server closes connection
-    if (ec && ec != capy::error::eof)
-        throw std::system_error(ec);
+    for (;;)
+    {
+        char chunk[4096];
+        auto [ec, n] = co_await capy::read(
+            stream, capy::mutable_buffer(chunk, sizeof(chunk)));
+        response.append(chunk, n);
+        if (ec)
+        {
+            // EOF is expected when the server closes the connection
+            if (ec != capy::error::eof)
+                throw std::system_error(ec);
+            break;
+        }
+    }
 
     std::cout << response << std::endl;
 }