73 lines
2.5 KiB
C
73 lines
2.5 KiB
C
/****************************************************************************
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* drivers/syslog/syslog_force.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdbool.h>
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#include <assert.h>
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#include <nuttx/syslog/syslog.h>
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#include "syslog.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: syslog_force
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*
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* Description:
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* This is the low-level system logging interface. This version forces
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* the output and is only used in emergency situations (e.g., in assertion
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* handling).
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*
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* Input Parameters:
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* ch - The character to add to the SYSLOG (must be positive).
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*
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* Returned Value:
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* On success, the character is echoed back to the caller. A negated errno
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* value is returned on any failure.
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*
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****************************************************************************/
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int syslog_force(int ch)
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{
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DEBUGASSERT(g_syslog_channel != NULL &&
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g_syslog_channel->sc_force != NULL);
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#ifdef CONFIG_SYSLOG_INTBUFFER
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/* Flush any characters that may have been added to the interrupt
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* buffer through the emergency channel
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*/
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syslog_flush_intbuffer(g_syslog_channel, true);
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#endif
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/* Then send the character to the emergency channel */
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return g_syslog_channel->sc_force(ch);
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}
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