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106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
/*
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* This file is part of the EasyLogger Library.
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*
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* Copyright (c) 2016, Armink, <armink.ztl@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* 'Software'), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Function: Logs buffered output.
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* Created on: 2016-11-09
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*/
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#include <elog.h>
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#include <string.h>
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#ifdef ELOG_BUF_OUTPUT_ENABLE
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#if !defined(ELOG_BUF_OUTPUT_BUF_SIZE)
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#error "Please configure buffer size for buffered output mode (in elog_cfg.h)"
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#endif
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/* buffered output mode's buffer */
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static char log_buf[ELOG_BUF_OUTPUT_BUF_SIZE] = { 0 };
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/* log buffer current write size */
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static size_t buf_write_size = 0;
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/* buffered output mode enabled flag */
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static bool is_enabled = false;
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extern void elog_port_output(const char *log, size_t size);
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extern void elog_output_lock(void);
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extern void elog_output_unlock(void);
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/**
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* output buffered logs when buffer is full
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*
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* @param log will be buffered line's log
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* @param size log size
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*/
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void elog_buf_output(const char *log, size_t size) {
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size_t write_size = 0, write_index = 0;
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if (!is_enabled) {
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elog_port_output(log, size);
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return;
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}
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while (true) {
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if (buf_write_size + size > ELOG_BUF_OUTPUT_BUF_SIZE) {
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write_size = ELOG_BUF_OUTPUT_BUF_SIZE - buf_write_size;
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memcpy(log_buf + buf_write_size, log + write_index, write_size);
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write_index += write_size;
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size -= write_size;
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/* output log */
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elog_port_output(log_buf, ELOG_BUF_OUTPUT_BUF_SIZE);
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/* reset write index */
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buf_write_size = 0;
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} else {
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memcpy(log_buf + buf_write_size, log + write_index, size);
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buf_write_size += size;
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break;
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}
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}
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}
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/**
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* flush all buffered logs to output device
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*/
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void elog_flush(void) {
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if (buf_write_size == 0)
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return;
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/* lock output */
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elog_output_lock();
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/* output log */
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elog_port_output(log_buf, buf_write_size);
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/* reset write index */
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buf_write_size = 0;
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/* unlock output */
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elog_output_unlock();
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}
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/**
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* enable or disable buffered output mode
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* the log will be output directly when mode is disabled
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*
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* @param enabled true: enabled, false: disabled
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*/
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void elog_buf_enabled(bool enabled) {
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is_enabled = enabled;
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}
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#endif /* ELOG_BUF_OUTPUT_ENABLE */
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