Upgrade Wagyu to version 0.5.0

mapbox/geometry/wagyu/interrupt.hpp

@@ -0,0 +1,50 @@
+#pragma once
+
+/**
+ * To enable this by the program, define USE_WAGYU_INTERRUPT before including wagyu.hpp
+ * To request an interruption, call `interrupt_request()`. As soon as Wagyu detects the request
+ * it will raise an exception (`std::runtime_error`).
+ */
+
+#ifdef USE_WAGYU_INTERRUPT
+
+namespace {
+thread_local bool WAGYU_INTERRUPT_REQUESTED = false;
+}
+
+namespace mapbox {
+namespace geometry {
+namespace wagyu {
+
+static void interrupt_reset(void) {
+    WAGYU_INTERRUPT_REQUESTED = false;
+}
+
+static void interrupt_request(void) {
+    WAGYU_INTERRUPT_REQUESTED = true;
+}
+
+static void interrupt_check(void) {
+    if (WAGYU_INTERRUPT_REQUESTED) {
+        interrupt_reset();
+        throw std::runtime_error("Wagyu interrupted");
+    }
+}
+} // namespace wagyu
+} // namespace geometry
+} // namespace mapbox
+
+#else /* ! USE_WAGYU_INTERRUPT */
+
+namespace mapbox {
+namespace geometry {
+namespace wagyu {
+
+static void interrupt_check(void) {
+}
+
+} // namespace wagyu
+} // namespace geometry
+} // namespace mapbox
+
+#endif /* USE_WAGYU_INTERRUPT */