# MPI library
**MPI**, short for Message Passing Interface, is a library that allows you to write parallel programs in Fortran77 or C. The library uses common operating system services to exchange information among the parallel processes it creates. 

# MPI_File_call_errhandler
This method invokes the error handler assigned to the file with the given error code.

# Syntax

```C
int MPI_File_call_errhandler(MPI_File fh, int errorcode)
```
# Parameters
* **`fh`** is the MPI file with the error handler.
* **`errorcode`** is the error code supplied to the file's error handler.

# Return value

If unsuccessful, the function returns an error. The error aborts the MPI job by default.

* In case of success, `MPI_File_call_errhandler` returns **`MPI_SUCCESS`**, the value returned upon successful termination of any MPI routine.
* In case of an invalid MPI filehandle provided in the arguments, the function returns **`MPI_ERR_FILE`**.

What is MPI_File_call_errhandler?

Invokes an error handler for an MPI file using a specified error code, returning either MPI_SUCCESS or MPI_ERR_FILE.