QlgSem_unlink()--Unlink Named Semaphore (using NLS-enabled path name)

 #include <semaphore.h>
 #include <qlg.h>

 int QlgSem_unlink(const Qlg_Path_Name_T *name);  
 

The QlgSem_unlink() function, like the sem_unlink() function, unlinks a named semaphore. The QlgSem_unlink() function takes a pointer to a Qlg_Path_Name_T structure, while the sem_unlink() function takes a pointer to a character string.

Limited information on the name parameter is provided in this API. For additional information on the name parameter, authorities required, return values, and related information, see sem_unlink()--Unlink Named Semaphore.

Parameters

name

(Input) A pointer a Qlg_Path_Name_T structure that contains a path name or a pointer to a path name of the semaphore to be unlinked. For more information on the Qlg_Path_Name_T structure, see Path name format.

Error Conditions

If QlgSem_unlink() is not successful, errno usually indicates the following error or one of the errors identified in sem_unlink()--Unlink Named Semaphore.

[ECONVERT]

A conversion error for the parameter name.

Related Information

• The <qlg.h> file (see Header Files for UNIX-Type Functions)
  
  
• sem_unlink()--Unlink Named Semaphore
  
  
• QlgSem_open()--Open Named Semaphore (using NLS-enabled path name)
  
  
• QlgSem_open_np()--Open Named Semaphore with Maximum Value (using NLS-enabled path name)

Note: All of the related information for sem_unlink() applies to QlgSem_unlink(). See Related Information in sem_unlink().

Example

See Code disclaimer information for information pertaining to code examples.

The following example unlinks the named semaphore "/mysem".

#include <semaphore.h>
#include <qlg.h>

main() {
  int rc;

  #define mypath "/mysem"
  const char US_const[3]= "US";
  const char Language_const[4]="ENU";
  const char Path_Name_Del_const[2]= "/";
  typedef struct pnstruct
    {
     Qlg_Path_Name_T qlg_struct;
     char[100] pn;  /* This size must be >= the path */
                              /* name length or be a pointer   */
                              /* to the path name.             */

    };
  struct pnstruct path;

   /***************************************************************/
   /*   Initialize Qlg_Path_Name_T parameters                     */
   /***************************************************************/
  memset((void*)path name, 0x00, sizeof(struct pnstruct));
  path.qlg_struct.CCSID = 37;
  memcpy(path.qlg_struct.Country_ID,US_const,2);
  memcpy(path.qlg_struct.Language_ID,Language_const,3);
  path.qlg_struct.Path_Type = QLG_CHAR_SINGLE;
  path.qlg_struct.Path_Length = sizeof(mypath)-1;
  memcpy(path.qlg_struct.Path_Name_Delimiter,Path_Name_Del_const,1);
  memcpy(path.pn,mypath,sizeof(mypath));

  rc = QlgSem_unlink((Qlg_Path_Name_T *)path name);

}