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Core: slab log_nomem flag.

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The flag allows to suppress "ngx_slab_alloc() failed: no memory" messages
from a slab allocator, e.g., if an LRU expiration is used by a consumer
and allocation failures aren't fatal.

The flag is now used in the SSL session cache code, and in the limit_req
module.
This commit is contained in:
Maxim Dounin
2014-03-31 21:38:30 +04:00
parent 8f6958baa9
commit 23f6689846
4 changed files with 14 additions and 2 deletions
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6
src/core/ngx_slab.c
View File

@@ -129,6 +129,7 @@ ngx_slab_init(ngx_slab_pool_t *pool)
pool->pages->slab = pages;
}
pool->log_nomem = 1;
pool->log_ctx = &pool->zero;
pool->zero = '\0';
}
@@ -658,7 +659,10 @@ ngx_slab_alloc_pages(ngx_slab_pool_t *pool, ngx_uint_t pages)
}
}
ngx_slab_error(pool, NGX_LOG_CRIT, "ngx_slab_alloc() failed: no memory");
if (pool->log_nomem) {
ngx_slab_error(pool, NGX_LOG_CRIT,
"ngx_slab_alloc() failed: no memory");
}
return NULL;
}