[#XLOGF_EVERY_MS_IF]
= XLOGF_EVERY_MS_IF
:mrdocs:

Similar to XLOGF(...) except only log a message every

== Synopsis

Declared in `<folly/logging/xlog.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
#define XLOGF_EVERY_MS_IF(level, cond, ms, fmt, ...)

----

== Description

Note that this is threadsafe.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ms*
| milliseconds and if the specified condition predicate evaluates to true.
| *level*
| The `folly::LogLevel` value at which to log.
| *cond*
| A predicate; the message is logged only when it is true.
| *fmt*
| A `folly::format`‐style format string for the message.
|===


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