LiteOS-Reading/src/doc/LiteOS_Kernel_Developer_Guide_en/programming-example-16.md

Programming Example

Example Description

The following functions are demonstrated:

1. Registering the hook function for error handling
2. Executing the function for error handling

Example Code

The code is as follows:

#include "los_err.h"
#include "los_typedef.h"
#include <stdio.h>

void Test_ErrHandle(CHAR *fileName, UINT32 lineNo, UINT32 errorNo, UINT32 paraLen, VOID  *para)
{
    printf("err handle ok\n");
}

static UINT32 TestCase(VOID)
{
    UINT32 errNo = 0;
    UINT32 ret;
    UINT32 errLine = 16;

    LOS_RegErrHandle(Test_ErrHandle);

    ret = LOS_ErrHandle("os_unspecific_file", errLine, errNo, 0, NULL);
    if (ret != LOS_OK) {
        return LOS_NOK;
    }

    return LOS_OK;
}

Verification

The verification result is as follows:

Huawei LiteOS # err handle ok

Complete Code

sample_err.c