util: add scope tracer utility (hack, but more or less useful)

[staging/windowmanager.git] / src / util.hpp

diff --git a/src/util.hpp b/src/util.hpp
index 84c2462..ff173c8 100644 (file)
--- a/src/util.hpp
+++ b/src/util.hpp
@@ -1,11 +1,28 @@
+/*
+ * Copyright (C) 2017 Mentor Graphics Development (Deutschland) GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 #ifndef WM_UTIL_HPP
 #define WM_UTIL_HPP
 
 #include <functional>
-#include <sys/poll.h>
-
+#include <thread>
 #include <vector>
 
+#include <sys/poll.h>
+
 extern "C" {
 #include <afb/afb-binding.h>
 };
@@ -33,6 +50,28 @@ extern "C" {
 #define logdebug(...)
 #endif
 
+#ifdef NDEBUG
+#define ST()
+#define STN(N)
+#else
+#define CONCAT_(X, Y) X##Y
+#define CONCAT(X, Y) CONCAT_(X, Y)
+
+#define ST() \
+    ScopeTrace __attribute__((unused)) CONCAT(trace_scope_, __LINE__)(__func__)
+#define STN(N) \
+    ScopeTrace __attribute__((unused)) CONCAT(named_trace_scope_, __LINE__)(#N)
+
+struct ScopeTrace {
+   thread_local static int indent;
+   char const *f{};
+   explicit ScopeTrace(char const *func) : f(func) {
+      fprintf(stderr, "%lu %*s%s -->\n", pthread_self(), 2 * indent++, "", this->f);
+   }
+   ~ScopeTrace() { fprintf(stderr, "%lu %*s%s <--\n", pthread_self(), 2 * --indent, "", this->f); }
+};
+#endif
+
 //      _                   _                 _                       __     _
 //  ___| |_ _ __ _   _  ___| |_   _   _ _ __ (_) __ _ _   _  ___     / _| __| |
 // / __| __| '__| | | |/ __| __| | | | | '_ \| |/ _` | | | |/ _ \   | |_ / _` |
@@ -54,19 +93,4 @@ struct unique_fd {
    }
 };
 
-//      _                   _     ____       _ _
-//  ___| |_ _ __ _   _  ___| |_  |  _ \ ___ | | | ___ _ __
-// / __| __| '__| | | |/ __| __| | |_) / _ \| | |/ _ \ '__|
-// \__ \ |_| |  | |_| | (__| |_  |  __/ (_) | | |  __/ |
-// |___/\__|_|   \__,_|\___|\__| |_|   \___/|_|_|\___|_|
-//
-struct Poller {
-   std::vector<std::function<int(int)>> handlers;
-   std::vector<struct pollfd> pfds;
-
-   Poller() = default;
-   void add_fd(int fd, std::function<int(int)> handler);
-   int check_events();
-};
-
 #endif  // !WM_UTIL_HPP