GetCpuFreq

Obtain the CPU frequency:

HmppResult HMPP_GetCpuFreqMhz (int32_t *mhz);

Parameters

Parameter	Description	Value Range	Input/Output
mhz	Pointer to the CPU frequency	The value cannot be NULL.	Output

Return Value

Success: HMPP_STS_NO_ERR
Failure: An error code is returned.

Error Codes

Error Code	Description
HMPP_STS_NULL_PTR_ERR	The mhz pointer is NULL.
HMPP_STS_NOT_SUPPORT	Failed to obtain information.

Example

void  GetCpuFreq_Example()
{
    int32_t mhz;
    HmppResult result = HMPP_GetCpuFreqMhz(&mhz);
    printf("%s\n", HMPP_GetStatusString(result));
    printf("cpu frequency = %d Mhz\n", mhz);
}

Output:

No Error
cpu frequency = 2600 Mhz

The correct value can be returned only when this interface is called by the root user.
The actual output may be different. You can call dmidecode -t processor | grep "Current" to compare the outputs.

Parent topic: Basic Functions