4e32721135
It may happen that panic occured while logger backend was formatting output data. In that case output buffer could get corrupted as logger assumes that processing happens in one context only (panic is the only exception). Added log output buffer flushing on entering panic state. Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
/*
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* Copyright (c) 2018 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <logging/log_backend.h>
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#include <logging/log_core.h>
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#include <logging/log_msg.h>
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#include <logging/log_output.h>
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#include <device.h>
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#include <uart.h>
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#include <assert.h>
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static int char_out(u8_t *data, size_t length, void *ctx)
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{
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struct device *dev = (struct device *)ctx;
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for (size_t i = 0; i < length; i++) {
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uart_poll_out(dev, data[i]);
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}
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return length;
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}
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static u8_t buf;
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LOG_OUTPUT_DEFINE(log_output, char_out, &buf, 1);
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static void put(const struct log_backend *const backend,
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struct log_msg *msg)
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{
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log_msg_get(msg);
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u32_t flags = LOG_OUTPUT_FLAG_LEVEL | LOG_OUTPUT_FLAG_TIMESTAMP;
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if (IS_ENABLED(CONFIG_LOG_BACKEND_SHOW_COLOR)) {
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flags |= LOG_OUTPUT_FLAG_COLORS;
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}
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if (IS_ENABLED(CONFIG_LOG_BACKEND_FORMAT_TIMESTAMP)) {
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flags |= LOG_OUTPUT_FLAG_FORMAT_TIMESTAMP;
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}
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log_output_msg_process(&log_output, msg, flags);
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log_msg_put(msg);
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}
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static void log_backend_uart_init(void)
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{
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struct device *dev;
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dev = device_get_binding(CONFIG_UART_CONSOLE_ON_DEV_NAME);
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assert(dev);
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log_output_ctx_set(&log_output, dev);
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}
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static void panic(struct log_backend const *const backend)
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{
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log_output_flush(&log_output);
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}
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static void dropped(const struct log_backend *const backend, u32_t cnt)
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{
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ARG_UNUSED(backend);
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log_output_dropped_process(&log_output, cnt);
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}
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const struct log_backend_api log_backend_uart_api = {
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.put = put,
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.panic = panic,
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.init = log_backend_uart_init,
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.dropped = dropped,
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};
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LOG_BACKEND_DEFINE(log_backend_uart, log_backend_uart_api, true);
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