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pthread_getschedparam(3) [osf1 man page]

pthread_getschedparam(3)				     Library Functions Manual					  pthread_getschedparam(3)

NAME
pthread_getschedparam - Obtains the current scheduling policy and scheduling parameters of a thread. LIBRARY
DECthreads POSIX 1003.1c Library (libpthread.so) SYNOPSIS
#include <pthread.h> int pthread_getschedparam( pthread_t thread, int *policy, struct sched_param *param); STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: IEEE Std 1003.1c-1995, POSIX System Application Program Interface PARAMETERS
Thread whose scheduling policy and parameters are obtained. Receives the value of the scheduling policy for the thread specified in thread. Refer to the description of the pthread_setschedparam(3) routine for valid parameters and their meanings. Receives the value of the scheduling parameters for the thread specified in thread. Refer to the description of the pthread_setschedparam(3) routine for valid values. DESCRIPTION
This routine obtains both the current scheduling policy and associated scheduling parameters of the thread specified by the thread argu- ment. The priority value returned in the param structure is the value specified in the attr argument passed to pthread_create(3) or by the most recent call to pthread_setschedparam(3) that affects the target thread. This routine differs from pthread_attr_getschedpolicy(3) and pthread_attr_getschedparam(3), in that those routines get the scheduling pol- icy and parameter attributes that are used to establish the priority and scheduling policy of a new thread when it is created. This rou- tine, however, obtains the scheduling policy and parameters of an existing thread. RETURN VALUES
If an error condition occurs, this routine returns an integer value indicating the type of error. Possible return values are as follows: Successful completion. The value specified by thread does not refer to an existing thread. ERRORS
None RELATED INFORMATION
Functions: pthread_attr_getschedparam(3), pthread_attr_getschedpolicy(3), pthread_create(3), pthread_self(3), pthread_setschedparam(3) Manuals: Guide to DECthreads and Programmer's Guide delim off pthread_getschedparam(3)

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pthread_getschedparam(3C)												 pthread_getschedparam(3C)

NAME
pthread_getschedparam, pthread_setschedparam - access dynamic thread scheduling parameters SYNOPSIS
cc -mt [ flag... ] file... -lpthread [ library... ] #include <pthread.h> int pthread_getschedparam(pthread_t thread, int *restrict policy, struct sched_param *restrict param); int pthread_setschedparam(pthread_t thread, int policy, const struct sched_param *param); The pthread_getschedparam() and pthread_setschedparam() functions allow the scheduling policy and scheduling parameters of individual threads within a multithreaded process to be retrieved and set. Supported policies are SCHED_FIFO, SCHED_RR, and SCHED_OTHER. See pthreads(5). For SCHED_FIFO, SCHED_RR, and SCHED_OTHER, the affected scheduling parameter is the sched_priority member of the sched_param structure. The pthread_getschedparam() function retrieves the scheduling policy and scheduling parameters for the thread whose thread ID is given by thread and stores those values in policy and param, respectively. The priority value returned from pthread_getschedparam() is the value specified by the most recent pthread_setschedparam() or pthread_create() call affecting the target thread, and reflects any temporary adjustments to its priority as a result of any priority inheritance or ceiling functions. The pthread_setschedparam() function sets the scheduling policy and associated scheduling parameters for the thread whose thread ID is given by thread to the policy and associated parameters provided in policy and param, respectively. If the pthread_setschedparam() function fails, no scheduling parameters will be changed for the target thread. If successful, the pthread_getschedparam() and pthread_setschedparam() functions return 0. Otherwise, an error number is returned to indi- cate the error. The pthread_getschedparam() function may fail if: ESRCH The value specified by thread does not refer to a existing thread. The pthread_setschedparam() function may fail if: EINVAL The value specified by policy or one of the scheduling parameters associated with the scheduling policy policy is invalid. EPERM The caller does not have the appropriate permission to set either the scheduling parameters or the scheduling policy of the specified thread. ESRCH The value specified by thread does not refer to a existing thread. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ pthread_attr_init(3C), sched_getparam(3RT), sched_setparam(3RT), sched_getscheduler(3RT), sched_setscheduler(3RT), attributes(5), pthreads(5), standards(5) 23 Nov 2005 pthread_getschedparam(3C)
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