my_system_api.h File Reference

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Functions
bool	is_running_in_cgroup ()
	Determines if the current process is running in a container. More...
bool	does_cgroup_limit_resources ()
	Determines if cgroup restricts resources. More...
uint64_t	my_cgroup_mem_limit ()
	Read the memory limit set by the container. More...
uint32_t	my_cgroup_vcpu_limit ()
	Read the CPU limit set by the container. More...
uint32_t	num_vcpus_using_affinity ()
	Find number of VCPUs as seen by the current process based on the affinity between each process and VCPU. More...
uint32_t	num_vcpus_using_config ()
	Get the number of VCPUS based on system configuration. More...
uint32_t	my_system_num_vcpus ()
	Get the number of VCPU. More...

Function Documentation

does_cgroup_limit_resources()

bool does_cgroup_limit_resources

(

)

Determines if cgroup restricts resources.

Returns

true if cgroup restricts resources like CPU or memory

is_running_in_cgroup()

bool is_running_in_cgroup

(

)

Determines if the current process is running in a container.

Returns

true if running in either cgroup v1 or cgroup v2, false otherwise

my_cgroup_mem_limit()

uint64_t my_cgroup_mem_limit

(

)

Read the memory limit set by the container.

Try cgroup v2, and then cgroup v1

Returns

memory limit set by cgroup v2 or cgroup v1; or 0

Note

Return value of 0 implies either no limits are set or server is not running in a container

my_cgroup_vcpu_limit()

uint32_t my_cgroup_vcpu_limit

(

)

Read the CPU limit set by the container.

Try cgroup v2, and then cgroup v1

Returns

CPU limit set by cgroup v2 or cgroup v1; or 0

Note

Return value of 0 implies either no limits are set or server is not running in a container

my_system_num_vcpus()

uint32_t my_system_num_vcpus

(

)

Get the number of VCPU.

num_vcpus_using_affinity()

uint32_t num_vcpus_using_affinity

(

)

Find number of VCPUs as seen by the current process based on the affinity between each process and VCPU.

num_vcpus_using_config()

uint32_t num_vcpus_using_config

(

)

Get the number of VCPUS based on system configuration.