Run memleak tests in parallel where possible

tests/memleaks.sh

@@ -35,11 +35,11 @@ function _test_thread_free_multi { #threads
 	frees=$(extract_num "[0-9]* frees" "$heap_usage")
 	if (( "$allocs" == 0 )); then
 		err "Allocated 0 times. Something is wrong.." "$output"
-		exit 1
+		return 1
 	fi
 	if (( "$allocs" != "$frees" )); then
 		err "Allocated $allocs times but freed only $frees" "$output"
-		exit 1
+		return 1
 	fi
 	#echo "Allocs: $allocs    Frees: $frees"
 }
@@ -49,9 +49,26 @@ function _test_thread_free_multi { #threads
 function test_thread_free_multi { #threads #times
 	echo "Testing multiple threads creation and destruction in pool(threads=$1 times=$2)"
 	compile src/no_work.c
-	for ((i = 1; i <= $2; i++)); do
+	pids=()
+
+	# Run tests in p
+	for (( i = 1; i <= "$2"; i++ )); do
+		
+		# Run test in background
 		python -c "import sys; sys.stdout.write('$i/$2\r')"
-		_test_thread_free_multi $1
+		_test_thread_free_multi "$1" &
+		pids+=($!)
+
+		# Wait for 10 background jobs to finish
+		if (( "$i" % 10 == 0 )); then
+			for pid in ${pids[@]}; do
+				wait $pid
+				if (( $? != 0 )); then
+					err "Test failed" "Test failed"
+				fi
+			done
+			pids=()
+		fi
 	done
 	echo
 }