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Move island-specific sparse matrices from arena to stack.

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PiperOrigin-RevId: 923850345
Change-Id: I9683d7554b15b7cd8c45a8dce7814640aa266452
This commit is contained in:
Yuval Tassa
2026-05-30 03:07:31 -07:00
committed by Copybara-Service
parent 5d782a2bb8
commit 96bf8aea81
11 changed files with 122 additions and 402 deletions
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include/mujoco/mjdata.h
-11
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@@ -364,12 +364,6 @@ struct mjData_ {
// computed by mj_island (dofs sorted by island)
mjtNum* ifrc_smooth; // net unconstrained force (nidof x 1)
mjtNum* iacc_smooth; // unconstrained acceleration (nidof x 1)
int* iM_rownnz; // inertia: non-zeros in each row (nidof x 1)
int* iM_rowadr; // inertia: address of each row in iM_colind (nidof x 1)
int* iM_colind; // inertia: column indices of non-zeros (nC x 1)
mjtNum* iM; // total inertia (sparse) (nC x 1)
mjtNum* iLD; // L'*D*L factorization of M (sparse) (nC x 1)
mjtNum* iLDiagInv; // 1/diag(D) (nidof x 1)
mjtNum* iacc; // acceleration (nidof x 1)
// computed by mj_island (island constraint structure)
@@ -384,11 +378,6 @@ struct mjData_ {
// computed by mj_island (constraints sorted by island)
int* iefc_type; // constraint type (mjtConstraint) (nefc x 1)
int* iefc_id; // id of object of specified type (nefc x 1)
int* iefc_J_rownnz; // number of non-zeros in constraint Jacobian row (nefc x 1)
int* iefc_J_rowadr; // row start address in colind array (nefc x 1)
int* iefc_J_rowsuper; // number of subsequent rows in supernode (nefc x 1)
int* iefc_J_colind; // column indices in constraint Jacobian (nJ x 1)
mjtNum* iefc_J; // constraint Jacobian (nJ x 1)
mjtNum* iefc_frictionloss; // frictionloss (friction) (nefc x 1)
mjtNum* iefc_D; // constraint mass (nefc x 1)
mjtNum* iefc_R; // inverse constraint mass (nefc x 1)