MPI_T_cvar_write

Synopsis

int MPI_T_cvar_write(MPI_T_cvar_handle handle, const void *buf)

Input Parameters

handle

handle of the control variable to be written (handle)

buf

initial address of storage location for variable value (choice)

Thread and Interrupt Safety

This routine is thread-safe. This means that this routine may be safely used by multiple threads without the need for any user-provided thread locks. However, the routine is not interrupt safe. Typically, this is due to the use of memory allocation routines such as malloc or other non-MPICH runtime routines that are themselves not interrupt-safe.

Errors

All MPI routines (except MPI_Wtime and MPI_Wtick) return an error value; C routines as the value of the function and Fortran routines in the last argument. Before the value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job. The error handler may be changed with MPI_Comm_set_errhandler (for communicators), MPI_File_set_errhandler (for files), and MPI_Win_set_errhandler (for RMA windows). The MPI-1 routine MPI_Errhandler_set may be used but its use is deprecated. The predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarentee that an MPI program can continue past an error; however, MPI implementations will attempt to continue whenever possible.

MPI_SUCCESS

No error; MPI routine completed successfully.

MPI_T_ERR_NOT_INITIALIZED

The MPI tool information interface is not initialized.

MPI_T_ERR_INVALID_HANDLE

The handle is invalid.

MPI_T_ERR_CVAR_SET_NOT_NOW

The control variable can not be set at this moment.

MPI_T_ERR_CVAR_SET_NEVER

The control variable can not be set until end of execution.

Location:/tmp/KtKGPV3F99/mpich-3.1.2/src/mpi_t/cvar_write.c