add profiler

src/profiler/profiler.h

@@ -0,0 +1,22 @@
+#ifndef PROFILER_ENABLED
+#define PROFILER_ENABLED 1
+#endif
+
+#if PROFILER_ENABLED
+#define profiler_begin() profiler__begin()
+#define profiler_end() profiler__end()
+#define profiler_begin_scope(name) profiler__begin_scope(#name, sizeof(#name) - 1)
+#define profiler_begin_fn() profiler_begin_scope(#__FUNCTION__)
+#define profiler_end_scope() profiler__end_scope()
+
+fn void profiler__begin();
+fn void profiler__end();
+fn void profiler__begin_scope(const char *name, int len);
+fn void profiler__end_scope();
+#else
+    #define profiler_begin()
+    #define profiler_end()
+    #define profiler_begin_scope(name)
+    #define profiler_begin_fn()
+    #define profiler_end_scope()
+#endif