102 lines
2.9 KiB
Diff
102 lines
2.9 KiB
Diff
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diff --git a/ui/latency/BUILD.gn b/ui/latency/BUILD.gn
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index 2aeebd991ae3..27cacb8748c4 100644
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--- a/ui/latency/BUILD.gn
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+++ b/ui/latency/BUILD.gn
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@@ -5,7 +5,7 @@
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import("//build/config/jumbo.gni")
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import("//testing/test.gni")
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-jumbo_source_set("latency") {
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+component("latency") {
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sources = [
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"fixed_point.cc",
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"fixed_point.h",
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@@ -18,6 +18,7 @@ jumbo_source_set("latency") {
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"latency_tracker.h",
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"stream_analyzer.cc",
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"stream_analyzer.h",
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+ "ui_latency_export.h",
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"windowed_analyzer.cc",
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"windowed_analyzer.h",
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]
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@@ -22,6 +23,8 @@ jumbo_source_set("latency") {
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public_deps = [
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"//services/metrics/public/cpp:metrics_cpp",
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]
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+
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+ defines = [ "UI_LATENCY_IMPLEMENTATION" ]
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}
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jumbo_source_set("test_support") {
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diff --git a/ui/latency/latency_info.h b/ui/latency/latency_info.h
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index d9d390861562..7b1aa99e8a9c 100644
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--- a/ui/latency/latency_info.h
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+++ b/ui/latency/latency_info.h
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@@ -16,6 +16,7 @@
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#include "base/time/time.h"
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#include "services/metrics/public/cpp/ukm_source_id.h"
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#include "ui/gfx/geometry/point_f.h"
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+#include "ui/latency/ui_latency_export.h"
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#if !defined(OS_IOS)
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#include "ipc/ipc_param_traits.h" // nogncheck
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@@ -114,7 +115,7 @@ enum SourceEventType {
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SOURCE_EVENT_TYPE_LAST = OTHER,
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};
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-class LatencyInfo {
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+class UI_LATENCY_EXPORT LatencyInfo {
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public:
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struct LatencyComponent {
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// Nondecreasing number that can be used to determine what events happened
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diff --git a/ui/latency/latency_tracker.h b/ui/latency/latency_tracker.h
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index 24397fc4ba6d..ad943fa7ccf7 100644
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--- a/ui/latency/latency_tracker.h
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+++ b/ui/latency/latency_tracker.h
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@@ -8,12 +8,13 @@
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#include "base/macros.h"
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#include "services/metrics/public/cpp/ukm_source_id.h"
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#include "ui/latency/latency_info.h"
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+#include "ui/latency/ui_latency_export.h"
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namespace ui {
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// Utility class for tracking the latency of events. Relies on LatencyInfo
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// components logged by content::RenderWidgetHostLatencyTracker.
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-class LatencyTracker {
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+class UI_LATENCY_EXPORT LatencyTracker {
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public:
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explicit LatencyTracker(bool metric_sampling,
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ukm::SourceId ukm_source_id = ukm::kInvalidSourceId);
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diff --git a/ui/latency/ui_latency_export.h b/ui/latency/ui_latency_export.h
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new file mode 100644
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index 0000000..f24ee91
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--- /dev/null
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+++ b/ui/latency/ui_latency_export.h
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@@ -0,0 +1,25 @@
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+#ifndef UI_LATENCY_UI_LATENCY_EXPORT_H_
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+#define UI_LATENCY_UI_LATENCY_EXPORT_H_
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+
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+#if defined(COMPONENT_BUILD)
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+#if defined(WIN32)
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+
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+#if defined(UI_LATENCY_IMPLEMENTATION)
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+#define UI_LATENCY_EXPORT __declspec(dllexport)
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+#else
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+#define UI_LATENCY_EXPORT __declspec(dllimport)
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+#endif // defined(UI_LATENCY_IMPLEMENTATION)
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+
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+#else // defined(WIN32)
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+#if defined(UI_LATENCY_IMPLEMENTATION)
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+#define UI_LATENCY_EXPORT __attribute__((visibility("default")))
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+#else
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+#define UI_LATENCY_EXPORT
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+#endif
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+#endif
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+
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+#else // defined(COMPONENT_BUILD)
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+#define UI_LATENCY_EXPORT
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+#endif
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+
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+#endif // UI_LATENCY_UI_LATENCY_EXPORT_H_
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