8a782f1815
Refs: https://github.com/libuv/libuv/pull/2725 PR-URL: https://github.com/libuv/libuv/pull/2984 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
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797 B
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28 lines
797 B
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.. _metrics:
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Metrics operations
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======================
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libuv provides a metrics API to track the amount of time the event loop has
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spent idle in the kernel's event provider.
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API
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---
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.. c:function:: uint64_t uv_metrics_idle_time(uv_loop_t* loop)
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Retrieve the amount of time the event loop has been idle in the kernel's
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event provider (e.g. ``epoll_wait``). The call is thread safe.
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The return value is the accumulated time spent idle in the kernel's event
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provider starting from when the :c:type:`uv_loop_t` was configured to
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collect the idle time.
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.. note::
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The event loop will not begin accumulating the event provider's idle
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time until calling :c:type:`uv_loop_configure` with
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:c:type:`UV_METRICS_IDLE_TIME`.
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.. versionadded:: 1.39.0
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