# System Functions

System functions are used to access the hardware resources on which the inSCADA Platform is running. It is also used to shut down, restart, and manage the list of requests made from the system.

## Get System Requests

#### ins.getSystemRequests()

It receives a list of requests received to the system.

Return Value: Returns a list of requests to the system as an array.

#### Syntax

```javascript
var requests=ins.getSystemRequests();
var i=0;
if (requests!==null) { return -1}; 
if (requests.length>0) {      // check new a req

    for (i=0;i<requests.length;i++) {
    
        switch (requests[i].type) {
            case "warm_restart":
            // to do
            ins.deleteSystemRequests(requests[i]);
            break;
            
            case "cold_restart":
            // to do
            ins.deleteSystemRequests(requests[i]);
            break;
            
            case "set_date_time":
            // to do
            ins.deleteSystemRequests(requests[i]);
            break;
            
            default:
            // undefined System Requests
            ins.deleteSystemRequests(requests[i]);
            break;
        }
    }
}
```

## Delete System Requests

#### ins.deleteSystemRequests(object requests)

Deletes a request to the system.

object requests: The request object in the list.

#### Syntax <a href="#syntax-1" id="syntax-1"></a>

```javascript
var requests=ins.getSystemRequests();
var i=0;
if (requests!==null) { return -1}; 
if (requests.length>0) {      // check new a req

    for (i=0;i<requests.length;i++) {
    
        switch (requests[i].type) {
            case "warm_restart":
            // to do
            ins.deleteSystemRequests(requests[i]);
            break;
            
            case "cold_restart":
            // to do
            ins.deleteSystemRequests(requests[i]);
            break;
            
            case "set_date_time":
            // to do
            ins.deleteSystemRequests(requests[i]);
            break;
            
            default:
            // undefined System Requests
            ins.deleteSystemRequests(requests[i]);
            break;
        }
    }
}
```

## Get System Status

#### ins.getSystemStats()

It gives information about the system resources and usage amounts.

Return Value: Does not return any value.

#### Syntax

```javascript
var system=ins.getSystemStats();
return system;
```

## Shutdown System

#### ins.shutdown() <a href="#ins-shutdown" id="ins-shutdown"></a>

Turns off the system.

Return Value: Does not return any value.

#### Syntax

```javascript
ins.shutdown();
```

## Restart System

#### ins.restart() <a href="#ins-restart" id="ins-restart"></a>

Restarts the system.

Return Value: Does not return any value.

#### Syntax

```javascript
ins.restart();
```