[#absl-LogSink]
= xref:absl.adoc[absl]::LogSink
:relfileprefix: ../
:mrdocs:

`absl::LogSink` is an interface which can be extended to intercept and process particular messages (with `LOG.ToSinkOnly()` or `LOG.ToSinkAlso()`) or all messages (if registered with `absl::AddLogSink`). Implementations must not take any locks that might be held by the `LOG` caller.

== Synopsis

Declared in `<absl/log/log_sink.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class LogSink;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:absl/LogSink/2destructor.adoc[`~LogSink`] [.small]#[destructor]# [.small]#[virtual]#
| Destroys the log sink.
| xref:absl/LogSink/Flush.adoc[`Flush`]  [.small]#[virtual]#
| Sinks that buffer messages should override this method to flush the buffer and return. `Flush` must be thread‐safe.
| xref:absl/LogSink/Send.adoc[`Send`]  [.small]#[virtual]#
| `Send` is called synchronously during the log statement. `Send` must be thread‐safe.
|===


== Protected Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:absl/LogSink/2constructor-0a.adoc[`LogSink`]         [.small]#[constructor]#
| Constructors
| xref:absl/LogSink/operator_assign.adoc[`operator=`] 
| Implementations may be copyable and/or movable.
|===


== Non-Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:absl/AddLogSink.adoc[`AddLogSink`]
| Adds a `absl::LogSink` as a consumer of logging data.
| xref:absl/RemoveLogSink.adoc[`RemoveLogSink`]
| Removes a `absl::LogSink` as a consumer of logging data.
|===


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