tree 0e38004cfe089f3fbe6a602f1257df754c9a6b26
parent c84851bccc2e5e60536afa474a5f13134a3b79c9
author Jacob Erlbeck <jerlbeck@sysmocom.de> 1443725033 +0200
committer Jacob Erlbeck <jerlbeck@sysmocom.de> 1446072664 +0100

stats: Add stat_item for value monitoring

This commit adds instrumentation function to gather measurement
and statistical values similar to counter groups.

Multiple values can be stored per item, which can be retrieved in
FIFO order. Getting values from the item does not modify its state to
allow for multiple independant backends (e.g. VTY and statd).

When a new value is set, the oldest value gets silently overwritten.
Lost values are skipped when getting values from the item.

Sponsored-by: On-Waves ehf