do-select FD set bytevector sizes
Bug #237627 reported by
Derick Eddington
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Ikarus Scheme |
Fix Committed
|
Wishlist
|
Abdulaziz Ghuloum | ||
Bug Description
In ikarus.io.ss, in do-select, n is calculated to be (add1 (get-max-fd)), and the rbv, wbv, and xbv bytevectors' sizes are n, but I think their sizes could be (add1 (div (get-max-fd) 8)) in order to not allocate larger bytevectors than needed for the bit sets. Or, for even better performance, they could be allocated only once to FD_SETSIZE (I guess a foreign-call to get that) and zeroed on entry to do-select (but that's not multi-thread safe...).
Related branches
| Changed in ikarus: | |
| importance: | Undecided → Wishlist |
| description: | updated |
Revision history for this message
| Derick Eddington (derick-eddington) wrote | #1 |
Revision history for this message
| Abdulaziz Ghuloum (aghuloum) wrote | #2 |
| Changed in ikarus: | |
| assignee: | nobody → aghuloum |
| status: | New → Fix Committed |
| Changed in ikarus: | |
| milestone: | none → 0.0.4 |
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But given how fast Ikarus's average allocation time is, probably the
difference between zeroing and allocating zeros is negligible?