54 lines
2.2 KiB
Diff
54 lines
2.2 KiB
Diff
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From 81cb6d0c3fb92dd15f0a0e0d2d32337be1617399 Mon Sep 17 00:00:00 2001
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From: Seth Hillbrand <seth@kipro-pcb.com>
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Date: Wed, 13 Mar 2024 10:33:43 -0700
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Subject: [PATCH] Fix race condition in zone fill
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When checking collisions, the SHAPE_POLY_SET::Collide() routine is not
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const because it will regenerate the triangulation cache if it is out of
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date (using a const_cast, grrr). This sidesteps the issue by assigning
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a mutex to the triangulation caching
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Fixes https://gitlab.com/kicad/code/kicad/-/issues/17180
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---
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libs/kimath/include/geometry/shape_poly_set.h | 4 +++-
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libs/kimath/src/geometry/shape_poly_set.cpp | 1 +
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2 files changed, 4 insertions(+), 1 deletion(-)
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diff --git a/libs/kimath/include/geometry/shape_poly_set.h b/libs/kimath/include/geometry/shape_poly_set.h
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index 9ba7b5407b0..ac5b2325744 100644
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--- a/libs/kimath/include/geometry/shape_poly_set.h
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+++ b/libs/kimath/include/geometry/shape_poly_set.h
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@@ -32,6 +32,7 @@
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#include <deque> // for deque
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#include <iosfwd> // for string, stringstream
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#include <memory>
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+#include <mutex>
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#include <set> // for set
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#include <stdexcept> // for out_of_range
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#include <stdlib.h> // for abs
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@@ -1537,7 +1538,8 @@ protected:
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std::vector<POLYGON> m_polys;
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std::vector<std::unique_ptr<TRIANGULATED_POLYGON>> m_triangulatedPolys;
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- bool m_triangulationValid = false;
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+ bool m_triangulationValid = false;
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+ std::mutex m_triangulationMutex;
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private:
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MD5_HASH m_hash;
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diff --git a/libs/kimath/src/geometry/shape_poly_set.cpp b/libs/kimath/src/geometry/shape_poly_set.cpp
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index 407c43b9c6e..dacc1e8a07c 100644
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--- a/libs/kimath/src/geometry/shape_poly_set.cpp
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+++ b/libs/kimath/src/geometry/shape_poly_set.cpp
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@@ -2984,6 +2984,7 @@ static SHAPE_POLY_SET partitionPolyIntoRegularCellGrid( const SHAPE_POLY_SET& aP
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void SHAPE_POLY_SET::cacheTriangulation( bool aPartition, bool aSimplify,
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std::vector<std::unique_ptr<TRIANGULATED_POLYGON>>* aHintData )
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{
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+ std::unique_lock<std::mutex> lock( m_triangulationMutex );
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bool recalculate = !m_hash.IsValid();
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MD5_HASH hash;
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--
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GitLab
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