measure backend process callback duration in ALSA backend
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@ -1961,11 +1961,13 @@ AlsaAudioBackend::main_process_thread ()
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/* call engine process callback */
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_last_process_start = g_get_monotonic_time ();
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dsp_stats[PreProcess].update();
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dsp_stats[ProcessCallback].start();
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if (engine.process_callback (_samples_per_period)) {
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_pcmi->pcm_stop ();
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_active = false;
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return 0;
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}
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dsp_stats[ProcessCallback].update();
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dsp_stats[PostProcess].start ();
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/* only used when adding/removing MIDI device/system ports */
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