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s3-prefork: implement prefork framework

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Primarily built for forked off rpc service daemons, but not tied to rpc
services and generic enough to be used elsewhere easily.

Signed-off-by: Andreas Schneider <asn@samba.org>
This commit is contained in:
Simo Sorce
2011-04-20 16:28:57 -04:00
committed by Andreas Schneider
parent 88b901b6ee
commit 4fef4fe498
4 changed files with 580 additions and 0 deletions
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source3/lib/server_prefork.h Normal file
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/*
Unix SMB/CIFS implementation.
Common server globals
Copyright (C) Simo Sorce <idra@samba.org> 2011
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "system/network.h"
#include <tevent.h>
enum pf_worker_status {
PF_WORKER_NONE = 0,
PF_WORKER_IDLE,
PF_WORKER_ACCEPTING,
PF_WORKER_BUSY,
PF_WORKER_EXITING
};
enum pf_server_cmds {
PF_SRV_MSG_NONE = 0,
PF_SRV_MSG_EXIT
};
struct pf_worker_data {
pid_t pid;
enum pf_worker_status status;
enum pf_server_cmds cmds;
time_t started;
time_t last_used;
int num_clients;
};
typedef int (prefork_main_fn_t)(struct tevent_context *ev,
struct pf_worker_data *pf,
int listen_fd,
int lock_fd,
void *private_data);
struct prefork_pool;
/* ==== Functions used by controlling process ==== */
bool prefork_create_pool(struct tevent_context *ev_ctx,
TALLOC_CTX *mem_ctx, int listen_fd,
int min_children, int max_children,
prefork_main_fn_t *main_fn, void *private_data,
struct prefork_pool **pf_pool);
int prefork_add_children(struct tevent_context *ev_ctx,
struct prefork_pool *pfp,
int num_children);
int prefork_retire_children(struct prefork_pool *pfp,
int num_children, time_t age_limit);
int prefork_count_active_children(struct prefork_pool *pfp, int *total);
bool prefork_mark_pid_dead(struct prefork_pool *pfp, pid_t pid);
/* ==== Functions used by children ==== */
int prefork_wait_for_client(struct pf_worker_data *pf,
int lock_fd, int listen_fd,
struct sockaddr *addr,
socklen_t *addrlen, int *fd);