Subsurf: Use regular mutex instead of RW one
Mutex is now local to particular CCGDM, and guarding edge hash which is only used by a single function only. There is no need to acquire read lock after edge hash was created.
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@ -144,7 +144,7 @@ typedef struct CCGDerivedMesh {
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struct EdgeHash *ehash;
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ThreadRWMutex loops_cache_rwlock;
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ThreadMutex loops_cache_lock;
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ThreadRWMutex origindex_cache_rwlock;
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} CCGDerivedMesh;
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@ -1488,7 +1488,7 @@ static void ccgDM_copyFinalLoopArray(DerivedMesh *dm, MLoop *mloop)
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/* DMFlagMat *faceFlags = ccgdm->faceFlags; */ /* UNUSED */
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if (!ccgdm->ehash) {
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BLI_rw_mutex_lock(&ccgdm->loops_cache_rwlock, THREAD_LOCK_WRITE);
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BLI_mutex_lock(&ccgdm->loops_cache_lock);
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if (!ccgdm->ehash) {
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MEdge *medge;
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EdgeHash *ehash;
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@ -1502,10 +1502,9 @@ static void ccgDM_copyFinalLoopArray(DerivedMesh *dm, MLoop *mloop)
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atomic_cas_ptr((void**)&ccgdm->ehash, ccgdm->ehash, ehash);
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}
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BLI_rw_mutex_unlock(&ccgdm->loops_cache_rwlock);
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BLI_mutex_unlock(&ccgdm->loops_cache_lock);
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}
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BLI_rw_mutex_lock(&ccgdm->loops_cache_rwlock, THREAD_LOCK_READ);
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totface = ccgSubSurf_getNumFaces(ss);
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ml = mloop;
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for (index = 0; index < totface; index++) {
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@ -1548,7 +1547,6 @@ static void ccgDM_copyFinalLoopArray(DerivedMesh *dm, MLoop *mloop)
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}
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}
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}
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BLI_rw_mutex_unlock(&ccgdm->loops_cache_rwlock);
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}
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static void ccgDM_copyFinalPolyArray(DerivedMesh *dm, MPoly *mpoly)
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@ -4050,7 +4048,7 @@ static void ccgDM_release(DerivedMesh *dm)
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MEM_freeN(ccgdm->faceMap);
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}
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BLI_rw_mutex_end(&ccgdm->loops_cache_rwlock);
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BLI_mutex_end(&ccgdm->loops_cache_lock);
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BLI_rw_mutex_end(&ccgdm->origindex_cache_rwlock);
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MEM_freeN(ccgdm);
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@ -5044,7 +5042,7 @@ static CCGDerivedMesh *getCCGDerivedMesh(CCGSubSurf *ss,
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ccgdm->dm.numLoopData = ccgdm->dm.numPolyData * 4;
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ccgdm->dm.numTessFaceData = 0;
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BLI_rw_mutex_init(&ccgdm->loops_cache_rwlock);
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BLI_mutex_init(&ccgdm->loops_cache_lock);
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BLI_rw_mutex_init(&ccgdm->origindex_cache_rwlock);
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return ccgdm;
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