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Enable per-tcache tcache_max

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1. add tcache_max and nhbins into tcache_t so that they are per-tcache,
   with one auto tcache per thread, it's also per-thread;
2. add mallctl for each thread to set its own tcache_max (of its auto tcache);
3. store the maximum number of items in each bin instead of using a global storage;
4. add tests for the modifications above.
5. Rename `nhbins` and `tcache_maxclass` to `global_do_not_change_nhbins` and `global_do_not_change_tcache_maxclass`.
This commit is contained in:
guangli-dai 2023-08-06 11:38:30 -07:00 • committed by Qi Wang
parent fbca96c433
commit a442d9b895
15 changed files with 528 additions and 222 deletions
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14
src/jemalloc.c
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@ -4136,15 +4136,13 @@ batch_alloc(void **ptrs, size_t num, size_t size, int flags) {
filled += n;
}
if (likely(ind < nhbins) && progress < batch) {
unsigned tcache_ind = mallocx_tcache_get(flags);
tcache_t *tcache = tcache_get_from_ind(tsd, tcache_ind,
/* slow */ true, /* is_alloc */ true);
if (likely(tcache != NULL &&
ind < tcache_nhbins_get(tcache)) && progress < batch) {
if (bin == NULL) {
unsigned tcache_ind = mallocx_tcache_get(flags);
tcache_t *tcache = tcache_get_from_ind(tsd,
tcache_ind, /* slow */ true,
/* is_alloc */ true);
if (tcache != NULL) {
bin = &tcache->bins[ind];
}
bin = &tcache->bins[ind];
}
/*
* If we don't have a tcache bin, we don't want to