Enable more std tests for interpreter

.github/workflows/interpreter.yml

@@ -42,12 +42,12 @@ jobs:
   test-interpreter-std_spec:
     needs: build-interpreter
     runs-on: ubuntu-22.04
+    timeout-minutes: 90
     container:
       image: crystallang/crystal:1.10.1-build
-    strategy:
-      matrix:
-        part: [0, 1, 2, 3]
-    name: "Test std_spec with interpreter (${{ matrix.part }})"
+      env:
+        HANDLE_SIGNAL_IN_INTERPRETER: "1"
+    name: "Test std_spec with interpreter"
     steps:
       - uses: actions/checkout@v4
 
@@ -61,4 +61,19 @@ jobs:
         run: chmod +x .build/crystal
 
       - name: Run std_spec with interpreter
-        run: SPEC_SPLIT="${{ matrix.part }}%4" bin/crystal i spec/interpreter_std_spec.cr -- --junit_output .junit/interpreter-std_spec.${{ matrix.part }}.xml
+        shell: bash
+        run: |
+          set -e
+          export HANDLE_SIGNAL_IN_INTERPRETER=1
+          status=0
+          for part in $(seq 0 15); do
+            echo "Running part ${part} of 15"
+            timeout 900 env SPEC_SPLIT="${part}%16" bin/crystal i spec/interpreter_std_spec.cr -- --junit_output .junit/interpreter-std_spec.${part}.xml 2> /dev/null
+            job_status=$?
+            echo $job_status
+            if [ $job_status -ne 0 ]; then
+              status=$job_status
+            fi
+          done
+          echo "final status: ${status}"
+          exit $status

spec/generate_interpreter_spec.sh

@@ -11,6 +11,9 @@ set +x
 export SPEC_SUITE=$1
 export OUT_FILE=$2
 export CRYSTAL_BIN=${CRYSTAL_BIN:-./bin/crystal}
+# Enable signal handlers in interpreted code
+export HANDLE_SIGNAL_IN_INTERPRETER=1
+
 job_size=${3:-64}
 
 command="$0 $*"

spec/std/time/format_spec.cr

@@ -1,4 +1,5 @@
 require "../spec_helper"
+require "../../support/time"
 require "spec/helpers/string"
 
 def parse_time(format, string)

spec/std/time/time_spec.cr

@@ -1,4 +1,5 @@
 require "../spec_helper"
+require "../../support/time"
 require "spec/helpers/iterate"
 
 CALENDAR_WEEK_TEST_DATA = [

src/crystal/system/unix/signal.cr

@@ -56,7 +56,7 @@ module Crystal::System::Signal
     end
   end
 
-  private def self.start_loop
+  def self.start_loop
     spawn(name: "Signal Loop") do
       loop do
         value = reader.read_bytes(Int32)

src/kernel.cr

@@ -590,3 +590,10 @@ end
     Crystal::Scheduler.init_workers
   {% end %}
 {% end %}
+
+{% if flag?(:interpreted) %}
+  if ENV["HANDLE_SIGNAL_IN_INTERPRETER"]? == "1"
+    Signal::CHLD.reset
+    Crystal::System::Signal.start_loop
+  end
+{% end %}