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8bb3198f72
Abstract arenas access to use arena_get() (or a0get() where appropriate) rather than directly reading e.g. arenas[ind]. Prior to the addition of the arenas.extend mallctl, the worst possible outcome of directly accessing arenas was a stale read, but arenas.extend may allocate and assign a new array to arenas. Add a tsd-based arenas_cache, which amortizes arenas reads. This introduces some subtle bootstrapping issues, with tsd_boot() now being split into tsd_boot[01]() to support tsd wrapper allocation bootstrapping, as well as an arenas_cache_bypass tsd variable which dynamically terminates allocation of arenas_cache itself. Promote a0malloc(), a0calloc(), and a0free() to be generally useful for internal allocation, and use them in several places (more may be appropriate). Abstract arena->nthreads management and fix a missing decrement during thread destruction (recent tsd refactoring left arenas_cleanup() unused). Change arena_choose() to propagate OOM, and handle OOM in all callers. This is important for providing consistent allocation behavior when the MALLOCX_ARENA() flag is being used. Prior to this fix, it was possible for an OOM to result in allocation silently allocating from a different arena than the one specified. |
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| .. | ||
| atomic.c | ||
| bitmap.c | ||
| ckh.c | ||
| hash.c | ||
| junk.c | ||
| mallctl.c | ||
| math.c | ||
| mq.c | ||
| mtx.c | ||
| prof_accum.c | ||
| prof_active.c | ||
| prof_gdump.c | ||
| prof_idump.c | ||
| prof_reset.c | ||
| prof_thread_name.c | ||
| ql.c | ||
| qr.c | ||
| quarantine.c | ||
| rb.c | ||
| rtree.c | ||
| SFMT.c | ||
| stats.c | ||
| tsd.c | ||
| util.c | ||
| zero.c | ||