rk_util.h File Reference

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Detailed Description

Header file for utility functions related to the TimeSys resource kernel.

Definition in file rk_util.h.

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Classes
struct	rk_resource_set_usage
Typedefs
typedef rk_resource_set_usage *	rk_resource_set_usage_t
Functions
rk_resource_set_t	rk_resource_set_get_by_name (const char *name)
	Search for a resource set by name and return the first one encountered.
int	rk_resource_set_get_usage (rk_resource_set_t rs, rk_resource_set_usage_t rsu)
	Compute the total resource usage for all the processes in a resource set.

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Function Documentation

rk_resource_set_t rk_resource_set_get_by_name (  const char *  name  )

Search for a resource set by name and return the first one encountered. Parameters: name  The resource set name to search for. Returns: A valid resource set pointer if the name was found, otherwise, NULL_RESOURCE_SET. Definition at line 49 of file rk_util.c. References NULL_RESOURCE_SET, require, RK_NAME_LEN, rk_resource_set_get_name(), rk_resource_set_t, and rk_resource_sets_get_list(). Referenced by RKTask::BeginCPUScheduling(), and rktProcessOptions().

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int rk_resource_set_get_usage (  rk_resource_set_t  rs, rk_resource_set_usage_t  rsu )

Compute the total resource usage for all the processes in a resource set. Currently, this is implemented by stepping through all of the processes attached to the resource set and pulling the usage information from '/proc/<pid>/stat'. Unfortunately, the standard kernel does not provide high-resolution data in the 'stat' file, so the file in the 'patch' directory before this function can be used. See also: rk_util/patch/tslinux-3.1-procstat.patch Parameters: rs  The resource set to compute the resource usage for. rsu  An allocated rk_resource_set_stat_t object where the results should be placed. Returns: Zero on success, otherwise, an errno value. Definition at line 75 of file rk_util.c. References rk_resource_set_get_proclist(), and rk_resource_set_t. Referenced by paGetAdvocate(), and sigalrm().

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