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The allowed_clients var is a parent managed variable that tell children how many clients they are allowed to handle at the same time. This way children can overcommit but within parent controlled limits. Signed-off-by: Andreas Schneider <asn@samba.org>
89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
/*
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Unix SMB/CIFS implementation.
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Common server globals
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Copyright (C) Simo Sorce <idra@samba.org> 2011
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "system/network.h"
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#include <tevent.h>
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enum pf_worker_status {
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PF_WORKER_NONE = 0,
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PF_WORKER_IDLE,
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PF_WORKER_ACCEPTING,
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PF_WORKER_BUSY,
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PF_WORKER_EXITING
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};
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enum pf_server_cmds {
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PF_SRV_MSG_NONE = 0,
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PF_SRV_MSG_EXIT
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};
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struct pf_worker_data {
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pid_t pid;
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enum pf_worker_status status;
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time_t started;
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time_t last_used;
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int num_clients;
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enum pf_server_cmds cmds;
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int allowed_clients;
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};
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typedef int (prefork_main_fn_t)(struct tevent_context *ev,
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struct pf_worker_data *pf,
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int listen_fd,
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int lock_fd,
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void *private_data);
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struct prefork_pool;
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/* ==== Functions used by controlling process ==== */
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bool prefork_create_pool(struct tevent_context *ev_ctx,
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TALLOC_CTX *mem_ctx, int listen_fd,
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int min_children, int max_children,
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prefork_main_fn_t *main_fn, void *private_data,
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struct prefork_pool **pf_pool);
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int prefork_add_children(struct tevent_context *ev_ctx,
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struct prefork_pool *pfp,
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int num_children);
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int prefork_retire_children(struct prefork_pool *pfp,
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int num_children, time_t age_limit);
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int prefork_count_active_children(struct prefork_pool *pfp, int *total);
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bool prefork_mark_pid_dead(struct prefork_pool *pfp, pid_t pid);
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void prefork_increase_allowed_clients(struct prefork_pool *pfp, int max);
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void prefork_reset_allowed_clients(struct prefork_pool *pfp);
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/* ==== Functions used by children ==== */
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int prefork_wait_for_client(struct pf_worker_data *pf,
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int lock_fd, int listen_fd,
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struct sockaddr *addr,
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socklen_t *addrlen, int *fd);
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struct tevent_req *prefork_listen_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct pf_worker_data *pf,
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int lock_fd, int listen_fd,
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struct sockaddr *addr,
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socklen_t *addrlen);
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int prefork_listen_recv(struct tevent_req *req, int *fd);
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