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hdf_log-h.md 4.57 KB

# hdf\_log.h<a name="EN-US_TOPIC_0000001054918123"></a>

## **Overview**<a name="section1518799958093525"></a>

**Related Modules:**

[DriverUtils](driverutils.md)

**Description:**

Declares log printing functions of the driver module. This module provides functions for printing logs at the verbose, debug, information, warning, and error levels.

To use these functions, you must define  **HDF\_LOG\_TAG**, for example, \#define HDF\_LOG\_TAG evt.

**Since:**

1.0

**Version:**

1.0

## **Summary**<a name="section1710176096093525"></a>

## Macros<a name="define-members"></a>

<a name="table474190013093525"></a>
<table><thead align="left"><tr id="row1540299786093525"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1375405289093525"><a name="p1375405289093525"></a><a name="p1375405289093525"></a>Macro Name and Value</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p831903220093525"><a name="p831903220093525"></a><a name="p831903220093525"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row2016145204093525"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1567601529093525"><a name="p1567601529093525"></a><a name="p1567601529093525"></a><a href="driverutils.md#ga7e862bda9f0b95d1628f6f62598f1f42">LOG_TAG_MARK_EXTEND</a>(HDF_TAG)   #HDF_TAG</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 ">&nbsp;</td>
</tr>
<tr id="row2052661276093525"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1717711828093525"><a name="p1717711828093525"></a><a name="p1717711828093525"></a><a href="driverutils.md#ga4abebfca1aaeb8125f85800425caf304">HDF_LOGV</a>(fmt, arg...)   <a href="en-us_topic_0000001054799545.md#ga98631211a4a8aee62f572375d5b637be">printf</a>("[HDF:V/" LOG_TAG "]" fmt "\r\n", ##arg)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1201297239093525"><a name="p1201297239093525"></a><a name="p1201297239093525"></a>Prints logs at the verbose level. </p>
</td>
</tr>
<tr id="row1026030118093525"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1571404864093525"><a name="p1571404864093525"></a><a name="p1571404864093525"></a><a href="driverutils.md#gaa0411582f697619cdb045ae61ac42539">HDF_LOGD</a>(fmt, arg...)   <a href="en-us_topic_0000001054799545.md#ga98631211a4a8aee62f572375d5b637be">printf</a>("[HDF:D/" LOG_TAG "]" fmt "\r\n", ##arg)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1903141057093525"><a name="p1903141057093525"></a><a name="p1903141057093525"></a>Prints logs at the debug level. </p>
</td>
</tr>
<tr id="row1310544128093525"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p656632918093525"><a name="p656632918093525"></a><a name="p656632918093525"></a><a href="driverutils.md#ga369d56841d17e6908fc6885fcb814b80">HDF_LOGI</a>(fmt, arg...)   <a href="en-us_topic_0000001054799545.md#ga98631211a4a8aee62f572375d5b637be">printf</a>("[HDF:I/" LOG_TAG "]" fmt "\r\n", ##arg)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p2142371427093525"><a name="p2142371427093525"></a><a name="p2142371427093525"></a>Prints logs at the information level. </p>
</td>
</tr>
<tr id="row1863126406093525"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p256499208093525"><a name="p256499208093525"></a><a name="p256499208093525"></a><a href="driverutils.md#ga72f232dade88b85aff2d8c0e42b82df0">HDF_LOGW</a>(fmt, arg...)   <a href="en-us_topic_0000001054799545.md#ga98631211a4a8aee62f572375d5b637be">printf</a>("[HDF:W/" LOG_TAG "]" fmt "\r\n", ##arg)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p508076966093525"><a name="p508076966093525"></a><a name="p508076966093525"></a>Prints logs at the warning level. </p>
</td>
</tr>
<tr id="row1258814462093525"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1898504596093525"><a name="p1898504596093525"></a><a name="p1898504596093525"></a><a href="driverutils.md#gaacd0eb778948960a7f97af155287ce8c">HDF_LOGE</a>(fmt, arg...)   <a href="en-us_topic_0000001054799545.md#ga98631211a4a8aee62f572375d5b637be">printf</a>("[HDF:E/" LOG_TAG "]" fmt "\r\n", ##arg)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1443792214093525"><a name="p1443792214093525"></a><a name="p1443792214093525"></a>Prints logs at the error level. </p>
</td>
</tr>
</tbody>
</table>

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提交于 2020-09-08 10:08 . add OpenHarmony 1.0 baseline

hdf_log.h

Overview

Related Modules:

Description:

Declares log printing functions of the driver module. This module provides functions for printing logs at the verbose, debug, information, warning, and error levels.

To use these functions, you must define HDF_LOG_TAG, for example, #define HDF_LOG_TAG evt.

Since:

1.0

Version:

1.0

Summary

Macros

Macro Name and Value	Description
LOG_TAG_MARK_EXTEND(HDF_TAG) #HDF_TAG
HDF_LOGV(fmt, arg...) printf("[HDF:V/" LOG_TAG "]" fmt "\r\n", ##arg)	Prints logs at the verbose level.
HDF_LOGD(fmt, arg...) printf("[HDF:D/" LOG_TAG "]" fmt "\r\n", ##arg)	Prints logs at the debug level.
HDF_LOGI(fmt, arg...) printf("[HDF:I/" LOG_TAG "]" fmt "\r\n", ##arg)	Prints logs at the information level.
HDF_LOGW(fmt, arg...) printf("[HDF:W/" LOG_TAG "]" fmt "\r\n", ##arg)	Prints logs at the warning level.
HDF_LOGE(fmt, arg...) printf("[HDF:E/" LOG_TAG "]" fmt "\r\n", ##arg)	Prints logs at the error level.

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