Fix thread affinity handling on Android platform (#943)

Author: Debug-boy

.github/workflows/ubuntu_clang.yml

@@ -156,7 +156,7 @@ jobs:
       matrix:
         mode: [ Release, Debug ]
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     steps:
       - name: Checkout
@@ -165,8 +165,8 @@ jobs:
       - name: Install ninja-build tool
         uses: seanmiddleditch/gha-setup-ninja@master
 
-      - name: Install clang-7
-        run:  sudo apt-get install clang-7 clang++-7 
+      - name: Install clang-11
+        run:  sudo apt-get install clang-11 clang++-11 
 
       - name: ccache
         uses: hendrikmuhs/ccache-action@v1.2
@@ -175,7 +175,7 @@ jobs:
 
       - name: Configure
         run: |
-          CXX=clang++-7 CC=clang-7 
+          CXX=clang++-11 CC=clang-11 
           cmake -B ${{github.workspace}}/build -G Ninja \
                 -DCMAKE_BUILD_TYPE=${{matrix.mode}} \
                 -DUSE_CCACHE=${{env.ccache}} -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++
@@ -185,4 +185,4 @@ jobs:
 
       - name: Test
         working-directory: ${{github.workspace}}/build
-        run: ctest -C ${{matrix.mode}} -j 1 -V
+        run: ctest -C ${{matrix.mode}} -j 1 -V

.github/workflows/ubuntu_gcc.yml

@@ -126,7 +126,7 @@ jobs:
     strategy:
       matrix:
         mode: [ Release, Debug ]
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     steps:
       - name: Checkout

include/ylt/coro_io/io_context_pool.hpp

@@ -190,8 +190,14 @@ class io_context_pool {
         cpu_set_t cpuset;
         CPU_ZERO(&cpuset);
         CPU_SET(i, &cpuset);
+
+#ifdef __ANDROID__
+        const pid_t tid = pthread_gettid_np(threads.back()->native_handle());
+        int rc = sched_setaffinity(tid, sizeof(cpu_set_t), &cpuset);
+#else
         int rc = pthread_setaffinity_np(threads.back()->native_handle(),
                                         sizeof(cpu_set_t), &cpuset);
+#endif
         if (rc != 0) {
           std::cerr << "Error calling pthread_setaffinity_np: " << rc << "\n";
         }