Format
#include <recio.h>
int _Rrlslck(_RFILE *fp);Language Level: ILE C Extension
Threadsafe: Yes.
Description
The _Rrlslck() function releases the lock on the currently locked record for the file specified by fp. The file must be open for update, and a record must be locked. If the _NO_POSITION option was specified on the _Rlocate() operation that locked the record, the record released may not be the record currently positioned to.
The _Rrlslck() function is valid for database and DDM files.
Return Value
The _Rrlslck() function returns 1 if the operation is successful, or zero if the operation is unsuccessful.
The value of errno may be set to:
See Table 12 and Table 14 for errno settings.
Example that uses _Rrlslck()
#include <stdio.h>
#include <stdlib.h>
#include <recio.h>
int main(void)
{
char buf[21];
_RFILE *fp;
_XXOPFB_T *opfb;
int result;
/* Open the file for processing in arrival sequence. */
if (( fp = _Ropen ( "MYLIB/T1677RD1", "rr+, arrseq=Y" )) == NULL )
{
printf ( "Open failed\n" );
exit ( 1 );
};
/* Get the library and file names of the file opened. */
opfb = _Ropnfbk ( fp );
printf ( "Library: %10.10s\nFile: %10.10s\n",
opfb->library_name,
opfb->file_name);
/* Get the last record. */
_Rreadl ( fp, NULL, 20, __DFT );
printf ( "Last record: %10.10s\n", *(fp->in_buf) );
/* _Rrlslck example. */
result = _Rrlslck ( fp );
if ( result == 0 )
printf("_Rrlslck failed.\n");
_Rclose ( fp );
}Related Information