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| author | Simo Sorce <idra@samba.org> | 2011-05-09 04:51:47 -0400 |
|---|---|---|
| committer | Andreas Schneider <asn@samba.org> | 2011-08-10 18:14:03 +0200 |
| commit | 567ca037866e188142ddc4533324e80080e93b81 (patch) | |
| tree | 3ebd111f6ba2aeb088473403c6b02505784bc058 /source3/lib | |
| parent | afc4dda7d078fb697ebfc36d021115007786c401 (diff) | |
| download | samba-567ca037866e188142ddc4533324e80080e93b81.tar.gz samba-567ca037866e188142ddc4533324e80080e93b81.tar.bz2 samba-567ca037866e188142ddc4533324e80080e93b81.zip | |
s3-prefork: provide means to expand the pool size
Signed-off-by: Andreas Schneider <asn@samba.org>
Diffstat (limited to 'source3/lib')
| -rw-r--r-- | source3/lib/server_prefork.c | 32 | ||||
| -rw-r--r-- | source3/lib/server_prefork.h | 1 |
2 files changed, 33 insertions, 0 deletions
diff --git a/source3/lib/server_prefork.c b/source3/lib/server_prefork.c index 0a8199a6ea..000539da0f 100644 --- a/source3/lib/server_prefork.c +++ b/source3/lib/server_prefork.c @@ -116,6 +116,38 @@ bool prefork_create_pool(struct tevent_context *ev_ctx, return true; } +/* Provide the new max children number in new_max + * (must be larger than current max). + * Returns: 0 if all fine + * ENOSPC if mremap fails to expand + * EINVAL if new_max is invalid + */ +int prefork_expand_pool(struct prefork_pool *pfp, int new_max) +{ + struct pf_worker_data *pool; + size_t old_size; + size_t new_size; + + if (new_max <= pfp->pool_size) { + return EINVAL; + } + + old_size = sizeof(struct pf_worker_data) * pfp->pool_size; + new_size = sizeof(struct pf_worker_data) * new_max; + + pool = mremap(pfp->pool, old_size, new_size, 0); + if (pool == MAP_FAILED) { + DEBUG(3, ("Failed to mremap memory for prefork pool!\n")); + return ENOSPC; + } + + memset(&pool[pfp->pool_size], 0, new_size - old_size); + + pfp->pool_size = new_max; + + return 0; +} + int prefork_add_children(struct tevent_context *ev_ctx, struct prefork_pool *pfp, int num_children) diff --git a/source3/lib/server_prefork.h b/source3/lib/server_prefork.h index bf9f3d3fe7..19ba32dff0 100644 --- a/source3/lib/server_prefork.h +++ b/source3/lib/server_prefork.h @@ -61,6 +61,7 @@ bool prefork_create_pool(struct tevent_context *ev_ctx, int min_children, int max_children, prefork_main_fn_t *main_fn, void *private_data, struct prefork_pool **pf_pool); +int prefork_expand_pool(struct prefork_pool *pfp, int new_max); int prefork_add_children(struct tevent_context *ev_ctx, struct prefork_pool *pfp, |