project-base/server-skynet-source-3rd-jemalloc
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Fix arena bugs.

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Split arena_dissociate_bin_run() out of arena_dalloc_bin_run(), so that
arena_bin_malloc_hard() can avoid dissociation when recovering from
losing a race.  This fixes a bug introduced by a recent attempted fix.

Fix a regression in arena_ralloc_large_grow() that was introduced by
recent fixes.
This commit is contained in:
Jason Evans 2010-10-18 00:04:44 -07:00
parent 8de6a02823
commit 088e6a0a37
1 changed files with 19 additions and 6 deletions
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25
jemalloc/src/arena.c
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@ -174,6 +174,8 @@ static void arena_run_trim_tail(arena_t *arena, arena_chunk_t *chunk,
static arena_run_t *arena_bin_nonfull_run_get(arena_t *arena, arena_bin_t *bin);
static void *arena_bin_malloc_hard(arena_t *arena, arena_bin_t *bin);
static size_t arena_bin_run_size_calc(arena_bin_t *bin, size_t min_run_size);
static void arena_dissociate_bin_run(arena_chunk_t *chunk, arena_run_t *run,
arena_bin_t *bin);
static void arena_dalloc_bin_run(arena_t *arena, arena_chunk_t *chunk,
arena_run_t *run, arena_bin_t *bin);
static void arena_bin_lower_run(arena_t *arena, arena_chunk_t *chunk,
@ -1856,10 +1858,9 @@ arena_prof_ctx_set(const void *ptr, prof_ctx_t *ctx)
#endif
static void
arena_dalloc_bin_run(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run,
arena_dissociate_bin_run(arena_chunk_t *chunk, arena_run_t *run,
arena_bin_t *bin)
{
size_t npages, run_ind, past;
/* Dissociate run from bin. */
if (run == bin->runcur)
@ -1876,6 +1877,17 @@ arena_dalloc_bin_run(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run,
*/
arena_run_tree_remove(&bin->runs, run_mapelm);
}
}
static void
arena_dalloc_bin_run(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run,
arena_bin_t *bin)
{
size_t npages, run_ind, past;
assert(run != bin->runcur);
assert(arena_run_tree_search(&bin->runs, &chunk->map[
(((uintptr_t)run-(uintptr_t)chunk)>>PAGE_SHIFT)-map_bias]) == NULL);
malloc_mutex_unlock(&bin->lock);
/******************************/
@ -1980,9 +1992,10 @@ arena_dalloc_bin(arena_t *arena, arena_chunk_t *chunk, void *ptr,
#endif
arena_run_reg_dalloc(run, ptr);
if (run->nfree == bin->nregs)
if (run->nfree == bin->nregs) {
arena_dissociate_bin_run(chunk, run, bin);
arena_dalloc_bin_run(arena, chunk, run, bin);
else if (run->nfree == 1 && run != bin->runcur)
} else if (run->nfree == 1 && run != bin->runcur)
arena_bin_lower_run(arena, chunk, run, bin);
#ifdef JEMALLOC_STATS
@ -2140,8 +2153,8 @@ arena_ralloc_large_grow(arena_t *arena, arena_chunk_t *chunk, void *ptr,
arena_run_split(arena, (arena_run_t *)((uintptr_t)chunk +
((pageind+npages) << PAGE_SHIFT)), splitsize, true, zero);
size += splitsize;
npages = (size >> PAGE_SHIFT);
size = oldsize + splitsize;
npages = size >> PAGE_SHIFT;
/*
* Mark the extended run as dirty if either portion of the run