[−][src]Module radvisor::util
Contains utility methods for processing various data structures, such as bytes, buffers, or system-specific calls
Structs
| AnonymousSlice | Represents an anonymous slice, lacking any memory ownership semantics |
| Buffer | Working buffer of raw bytes. Can operate both in managed mode (where it keeps track of length) and unmanaged mode (where it acts) as a plain byte buffer. |
| ByteLines | Provides iteration capabilities to a raw byte buffer, iterating on each newline found |
| CgroupManager | Encapsulated behavior for lazy-resolution of Docker cgroup driver (systemd or cgroupfs). Works for cgroups v1 |
| CgroupPath | Resolved and existing cgroup path constructed from the construction methods
on |
| ItemPool | Utility structure for tracking a pool of items and generating events when new items are added or old items are removed. |
Enums
| CgroupDriver | Docker cgroup driver used to orchestrate moving containers in and out of cgroups |
| LazyQuantity |
Constants
| INVALID_CGROUP_MOUNT_MESSAGE | |
| LINUX_CGROUP_ROOT | |
| N | |
| R | |
| S | |
| SIZE | Size of internal capacity |
Traits
| BufferLike |
Functions
| cgroups_mounted_properly | Checks if cgroups are mounted in /sys/fs/cgroup and if the cpuacct subsystem is enabled (necessary for proper driver detection) |
| content_len_raw | Determines the length of the non-zero content in a raw buffer slice |
| escape_systemd | Escapes a cgroup slice to be in the style of Systemd cgroups
see |
| find_char | Finds the position of the next character, starting at the given index. If a NUL character is reached before the target, the result is an None. Else, if the target is found, the result is a Some including the index of the target char. |
| is_newline | Returns true if the given char is a line feed or carriage return |
| is_space | Returns true if the given char is a normal whitespace |
| is_whitespace | Returns true if the given char is a line feed, carriage return, or normal space |
| make | Constructs a cgroup absolute path according to the style expected by the given driver |
| nano_ts | Gets the nanosecond unix timestamp for a stat read |
| num_available_cores | Gets the number of available cores on the system. On Linux, this excludes those that have been disabled. |
| num_cores | Gets the total number of cores on the system. On Linux, this includes disabled ones |
| remap | Attempts to map a number range into another, falling back to 0 if the conversion failed |
| second_ts | Gets the second unix timestamp for the stat filename |
| terminal_width | Attempts to get the width of the given terminal type (in characters), returning None if no applicable width can be found |
| trim_raw | Trims a raw buffer slice to not include any starting or ending whitespace |