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f9609f3217
This patch causes the flow control state in the library to be set
properly when the flow control is turned off (disabled). Then it can be
read properly by the flow control apis.
This also fixes the case where the application is no longer sending
messages and it has already dispatched all its received messages
before flow control is disabled.
Also, CPG response messages with a TRY_AGAIN error did NOT contain
a valid flow control state value. This meant the library could get
stuck with flow control enabled (flow control was never enabled
for the EXEC, so no disable event occurred).
This case was hit when a new node was joining - sync_in_process()
resulted in a TRY_AGAIN for error cpg_mcast_joined).
Also, in message_handler_req_exec_cpg_mcast() the state passed
back to the library defaulted to disabled for messages received
from another node (even if flow control was still enabled)
- this meant if multiple nodes were sending CPG messages,
then the library flow control state flip-flopped between
enabled and disabled.
Author: Steven Dake <sdake@redhat.com> &
Tim Beale <tim.beale@alliedtelesis.co.nz>
git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@1667 fd59a12c-fef9-0310-b244-a6a79926bd2f
98 lines
3.2 KiB
C
98 lines
3.2 KiB
C
/*
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* Copyright (c) 2006-2007 Red Hat, Inc.
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*
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* All rights reserved.
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*
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* Author: Steven Dake (sdake@redhat.com)
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*
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* This software licensed under BSD license, the text of which follows:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the MontaVista Software, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef IPC_H_DEFINED
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#define IPC_H_DEFINED
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#include "flow.h"
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#ifndef TIMER_HANDLE
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typedef void * timer_handle;
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#define TIMER_HANDLE
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#endif
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extern void message_source_set (mar_message_source_t *source, void *conn);
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extern int message_source_is_local (mar_message_source_t *source);
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extern void *corosync_conn_partner_get (void *conn);
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extern void *corosync_conn_private_data_get (void *conn);
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extern int corosync_conn_send_response (void *conn, void *msg, int mlen);
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extern int corosync_conn_send_response_no_fcc (void *conn, void *msg,int mlen);
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extern void corosync_ipc_init (
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void (*serialize_lock_fn) (void),
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void (*serialize_unlock_fn) (void),
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unsigned int gid_valid);
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extern int corosync_ipc_timer_add (
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void *conn,
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void (*timer_fn) (void *data),
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void *data,
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unsigned int msec_in_future,
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timer_handle *handle);
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extern void corosync_ipc_timer_del (
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void *conn,
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timer_handle timer_handle);
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extern void corosync_ipc_timer_del_data (
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void *conn,
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timer_handle timer_handle);
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extern void corosync_ipc_flow_control_create (
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void *conn,
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unsigned int service,
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char *id,
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int id_len,
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void (*flow_control_state_set_fn) (void *context, enum corosync_flow_control_state flow_control_state_set),
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void *context);
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extern void corosync_ipc_flow_control_destroy (
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void *conn,
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unsigned int service,
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unsigned char *id,
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int id_len);
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extern void corosync_ipc_flow_control_local_increment (
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void *conn);
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extern void corosync_ipc_flow_control_local_decrement (
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void *conn);
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#endif /* IPC_H_DEFINED */
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