Get a thread's scheduling parameters
Synopsis:
#include <pthread.h>
int pthread_getschedparam(
const pthread_t thread,
int *policy,
struct sched_param *param );
Arguments:
-
thread
- The ID of the thread that you want to get the scheduling parameters for.
You can get a thread ID by calling
pthread_create()
or
pthread_self()
.
-
policy
- A pointer to a location where the function can store the
scheduling policy, which is one of SCHED_FIFO,
SCHED_RR, SCHED_SPORADIC, or SCHED_OTHER. As a
BlackBerry 10 OS extension, you can pass NULL
for this argument.
-
param
- A pointer to a
sched_param
structure where the function can store the scheduling parameters.
Library:
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
Description:
The pthread_getschedparam() function gets the scheduling
policy and associated scheduling parameters of thread thread
and places them in the locations that policy and param
point to.
As a BlackBerry 10 OS extension, policy can be NULL, in which case the function doesn't try to store the
scheduling policy.
Note:
In order to get the scheduling policy for a process whose real or saved user ID is different from
the calling process's real or effective user ID, your process must have the
PROCMGR_AID_SCHEDULE ability enabled.
For more information, see
procmgr_ability()
.
Returns:
-
EOK
- Success.
-
EFAULT
- A fault occurred trying to access the buffers provided.
-
EPERM
- The calling process doesn't have the required permission; see
procmgr_ability()
.
-
ESRCH
- Invalid thread ID thread.
Classification:
POSIX 1003.1 THR TPS
| Safety: |
|
| Cancellation point |
No |
| Interrupt handler |
No |
| Signal handler |
Yes |
| Thread |
Yes |