32 lines
1018 B
Groff
32 lines
1018 B
Groff
Official usptream patch #2
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Source: http://www.oracle.com/technology/products/berkeley-db/db/update/4.6.21/patch.4.6.21.html
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*** mp/mp_region.c 2007-05-18 03:18:01.000000000 +1000
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--- mp/mp_region.c 2008-06-24 13:15:56.000000000 +1000
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***************
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*** 249,256 ****
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mtx_base = htab[0].mtx_hash;
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}
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if (mtx_base != MUTEX_INVALID)
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! mtx_base += reginfo_off * htab_buckets;
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/* Allocate hash table space and initialize it. */
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if ((ret = __env_alloc(infop,
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--- 249,262 ----
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mtx_base = htab[0].mtx_hash;
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}
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+ /*
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+ * We preallocated all of the mutexes in a block, so for regions after
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+ * the first, we skip mutexes in use in earlier regions. Each region
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+ * has the same number of buckets and there are two mutexes per hash
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+ * bucket (the bucket mutex and the I/O mutex).
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+ */
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if (mtx_base != MUTEX_INVALID)
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! mtx_base += reginfo_off * htab_buckets * 2;
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/* Allocate hash table space and initialize it. */
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if ((ret = __env_alloc(infop,
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