macro LFDS711_QUEUE_UMM_GET_USER_STATE_FROM_STATE
Jump to navigation
Jump to search
Source File
└───liblfds711
└───inc
└───liblfds711
lfds711_queue_umm.h
Macro
#define LFDS711_QUEUE_UMM_GET_USER_STATE_FROM_STATE( queue_umm_state )
Parameters
queue_umm_state
- An initialized struct lfds711_queue_umm_state. Not a pointer to it - the struct itself.
Return Value
Returns a void *, the user_state argument from lfds711_umm_queue_init_valid_on_current_logical_core.
Notes
The user state value can only be set the once, when the data structure instance is initialized.
As with all liblfds macros, the macro operates on the structure itself, not a pointer to it.
Example
#include <stdio.h>
#include <string.h>
#include "liblfds711.h"
int main()
{
char
queue_name[64] = "People Ain't No Good";
struct lfds711_queue_umm_element
qumme_dummy;
struct lfds711_queue_umm_state
qumms;
void
*user_state;
lfds711_queue_umm_init_valid_on_current_logical_core( &qumms, &qumme_dummy, (void *) queue_name );
user_state = LFDS711_QUEUE_GET_USER_STATE_FROM_STATE( qumms );
printf( "queue name is \"%s\"\n", (char *) user_state );
lfds711_queue_umm_cleanup( &qumms, NULL );
return( EXIT_SUCCESS );
}