X-Git-Url: https://git.sesse.net/?p=nageru;a=blobdiff_plain;f=quicksync_encoder.cpp;h=1b36aa5246fbda3b19b5e65a5abc48365ab23840;hp=0c9cf0640446f39df3dcdfca27f0d16f584a50d2;hb=017c260b96736e797fee120107b85c4c7fc81aa1;hpb=35b405f813c4fd4eccf67eb95dce877c9e288421

diff --git a/quicksync_encoder.cpp b/quicksync_encoder.cpp
index 0c9cf06..1b36aa5 100644
--- a/quicksync_encoder.cpp
+++ b/quicksync_encoder.cpp
@@ -68,7 +68,7 @@ namespace {
 
 // These need to survive several QuickSyncEncoderImpl instances,
 // so they are outside.
-bool quick_sync_metrics_inited = false;
+once_flag quick_sync_metrics_inited;
 LatencyHistogram mixer_latency_histogram, qs_latency_histogram;
 MuxMetrics current_file_mux_metrics, total_mux_metrics;
 std::atomic<double> metric_current_file_start_time_seconds{0.0 / 0.0};
@@ -1573,15 +1573,14 @@ QuickSyncEncoderImpl::QuickSyncEncoderImpl(const std::string &filename, Resource
 		memset(&slice_param, 0, sizeof(slice_param));
 	}
 
-	if (!quick_sync_metrics_inited) {
+	call_once(quick_sync_metrics_inited, [](){
 		mixer_latency_histogram.init("mixer");
 		qs_latency_histogram.init("quick_sync");
 		current_file_mux_metrics.init({{ "destination", "current_file" }});
 		total_mux_metrics.init({{ "destination", "files_total" }});
 		global_metrics.add("current_file_start_time_seconds", &metric_current_file_start_time_seconds, Metrics::TYPE_GAUGE);
 		global_metrics.add("quick_sync_stalled_frames", &metric_quick_sync_stalled_frames);
-		quick_sync_metrics_inited = true;
-	}
+	});
 
 	storage_thread = thread(&QuickSyncEncoderImpl::storage_task_thread, this);