[Bf-blender-cvs] [026de343e35] master: Fix deadlock with shrinkwrap and other modifiers
Brecht Van Lommel
noreply at git.blender.org
Tue Jun 22 18:30:03 CEST 2021
Commit: 026de343e3528fe2b2f8d8daba7fa2fd4b807337
Author: Brecht Van Lommel
Date: Tue Jun 22 18:17:48 2021 +0200
Branches: master
https://developer.blender.org/rB026de343e3528fe2b2f8d8daba7fa2fd4b807337
Fix deadlock with shrinkwrap and other modifiers
More code that needs task isolation. Encountered in sprite fright production
file.
Ref D11603
===================================================================
M source/blender/blenkernel/intern/mesh_runtime.c
M source/blender/blenkernel/intern/mesh_wrapper.c
===================================================================
diff --git a/source/blender/blenkernel/intern/mesh_runtime.c b/source/blender/blenkernel/intern/mesh_runtime.c
index fae4c87626a..011dd7e25ee 100644
--- a/source/blender/blenkernel/intern/mesh_runtime.c
+++ b/source/blender/blenkernel/intern/mesh_runtime.c
@@ -30,6 +30,7 @@
#include "DNA_object_types.h"
#include "BLI_math_geom.h"
+#include "BLI_task.h"
#include "BLI_threads.h"
#include "BKE_bvhutils.h"
@@ -151,6 +152,12 @@ int BKE_mesh_runtime_looptri_len(const Mesh *mesh)
return looptri_len;
}
+static void mesh_runtime_looptri_recalc_isolated(void *userdata)
+{
+ Mesh *mesh = userdata;
+ BKE_mesh_runtime_looptri_recalc(mesh);
+}
+
/* This is a ported copy of dm_getLoopTriArray(dm). */
const MLoopTri *BKE_mesh_runtime_looptri_ensure(Mesh *mesh)
{
@@ -163,7 +170,8 @@ const MLoopTri *BKE_mesh_runtime_looptri_ensure(Mesh *mesh)
BLI_assert(BKE_mesh_runtime_looptri_len(mesh) == mesh->runtime.looptris.len);
}
else {
- BKE_mesh_runtime_looptri_recalc(mesh);
+ /* Must isolate multithreaded tasks while holding a mutex lock. */
+ BLI_task_isolate(mesh_runtime_looptri_recalc_isolated, mesh);
looptri = mesh->runtime.looptris.array;
}
diff --git a/source/blender/blenkernel/intern/mesh_wrapper.c b/source/blender/blenkernel/intern/mesh_wrapper.c
index cf1dba3325c..fe6af432314 100644
--- a/source/blender/blenkernel/intern/mesh_wrapper.c
+++ b/source/blender/blenkernel/intern/mesh_wrapper.c
@@ -40,6 +40,7 @@
#include "BLI_ghash.h"
#include "BLI_math.h"
+#include "BLI_task.h"
#include "BLI_threads.h"
#include "BLI_utildefines.h"
@@ -95,15 +96,9 @@ Mesh *BKE_mesh_wrapper_from_editmesh(BMEditMesh *em,
return BKE_mesh_wrapper_from_editmesh_with_coords(em, cd_mask_extra, NULL, me_settings);
}
-void BKE_mesh_wrapper_ensure_mdata(Mesh *me)
+static void mesh_wrapper_ensure_mdata_isolated(void *userdata)
{
- ThreadMutex *mesh_eval_mutex = (ThreadMutex *)me->runtime.eval_mutex;
- BLI_mutex_lock(mesh_eval_mutex);
-
- if (me->runtime.wrapper_type == ME_WRAPPER_TYPE_MDATA) {
- BLI_mutex_unlock(mesh_eval_mutex);
- return;
- }
+ Mesh *me = userdata;
const eMeshWrapperType geom_type_orig = me->runtime.wrapper_type;
me->runtime.wrapper_type = ME_WRAPPER_TYPE_MDATA;
@@ -136,6 +131,20 @@ void BKE_mesh_wrapper_ensure_mdata(Mesh *me)
if (me->runtime.wrapper_type_finalize) {
BKE_mesh_wrapper_deferred_finalize(me, &me->runtime.cd_mask_extra);
}
+}
+
+void BKE_mesh_wrapper_ensure_mdata(Mesh *me)
+{
+ ThreadMutex *mesh_eval_mutex = (ThreadMutex *)me->runtime.eval_mutex;
+ BLI_mutex_lock(mesh_eval_mutex);
+
+ if (me->runtime.wrapper_type == ME_WRAPPER_TYPE_MDATA) {
+ BLI_mutex_unlock(mesh_eval_mutex);
+ return;
+ }
+
+ /* Must isolate multithreaded tasks while holding a mutex lock. */
+ BLI_task_isolate(mesh_wrapper_ensure_mdata_isolated, me);
BLI_mutex_unlock(mesh_eval_mutex);
}
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