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Add mj_stackAllocInt to get correct size for allocating ints on mjData stack. Reducing stack memory usage by 10% - 15%.

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PiperOrigin-RevId: 517672195
Change-Id: Ie14e6c9c99e8b9e1c5d3686b77631f2df0651c67
This commit is contained in:
Kyle Bayes
2023-03-18 13:03:11 -07:00
committed by Copybara-Service
parent fae5e822c0
commit 8696247f9d
17 changed files with 103 additions and 48 deletions
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src/engine/engine_collision_driver.c
+3 -2
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@@ -388,8 +388,9 @@ void mj_collision(const mjModel* m, mjData* d) {
// dynamic only or merge; apply exclude
else {
// call broadphase collision detector
broadphasepair = (int*)mj_stackAlloc(d, (m->nbody*(m->nbody-1))/2);
nbodypair = mj_broadphase(m, d, broadphasepair, (m->nbody*(m->nbody-1))/2);
int npairs = (m->nbody*(m->nbody - 1))/2;
broadphasepair = mj_stackAllocInt(d, npairs);
nbodypair = mj_broadphase(m, d, broadphasepair, npairs);
unsigned int last_signature = -1;
// loop over body pairs (broadphase or all)