From 0e29f7974b59e4440cf02e1388fb9d8ab2b5c5fd Mon Sep 17 00:00:00 2001 From: Hein-Pieter van Braam Date: Wed, 25 Jul 2018 03:11:03 +0200 Subject: Reduce unnecessary COW on Vector by make writing explicit This commit makes operator[] on Vector const and adds a write proxy to it. From now on writes to Vectors need to happen through the .write proxy. So for instance: Vector vec; vec.push_back(10); std::cout << vec[0] << std::endl; vec.write[0] = 20; Failing to use the .write proxy will cause a compilation error. In addition COWable datatypes can now embed a CowData pointer to their data. This means that String, CharString, and VMap no longer use or derive from Vector. _ALWAYS_INLINE_ and _FORCE_INLINE_ are now equivalent for debug and non-debug builds. This is a lot faster for Vector in the editor and while running tests. The reason why this difference used to exist is because force-inlined methods used to give a bad debugging experience. After extensive testing with modern compilers this is no longer the case. --- core/math/geometry.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'core/math/geometry.h') diff --git a/core/math/geometry.h b/core/math/geometry.h index be998aef0b..186a05fb37 100644 --- a/core/math/geometry.h +++ b/core/math/geometry.h @@ -890,14 +890,14 @@ public: for (int i = 0; i < n; ++i) { while (k >= 2 && vec2_cross(H[k - 2], H[k - 1], P[i]) <= 0) k--; - H[k++] = P[i]; + H.write[k++] = P[i]; } // Build upper hull for (int i = n - 2, t = k + 1; i >= 0; i--) { while (k >= t && vec2_cross(H[k - 2], H[k - 1], P[i]) <= 0) k--; - H[k++] = P[i]; + H.write[k++] = P[i]; } H.resize(k); -- cgit v1.2.3