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Lazy init for event name mapping registry

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Summary:
## Changelog:

[Internal] -

Noticed this when setting up C++ unit tests for WebPerformance - the change in this diff both makes sure there is no "global constructor" warning generated when `-Wglobal-constructors` is enabled, and also makes this bit potentially a little bit more efficient, as we don't pay for the registry construction if we don't use the WebPerformance API.

Reviewed By: christophpurrer

Differential Revision: D43663521

fbshipit-source-id: 59952f2415f49bb455a3443b3bfd8971108ac72b
This commit is contained in:
Ruslan Shestopalyuk
2023-03-01 00:36:07 -08:00
committed by Facebook GitHub Bot
parent a0adf57e50
commit 3997fc1c66
1 changed files with 47 additions and 42 deletions
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Libraries/WebPerformance/PerformanceEntryReporter.cpp
+47 -42
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@@ -218,53 +218,58 @@ struct StrKeyHash {
// https://www.w3.org/TR/event-timing/#sec-events-exposed
// Not all of these are currently supported by RN, but we map them anyway for
// future-proofing.
static const std::unordered_map<StrKey, const char *, StrKeyHash>
SUPPORTED_EVENTS = {
{"topAuxClick", "auxclick"},
{"topClick", "click"},
{"topContextMenu", "contextmenu"},
{"topDblClick", "dblclick"},
{"topMouseDown", "mousedown"},
{"topMouseEnter", "mouseenter"},
{"topMouseLeave", "mouseleave"},
{"topMouseOut", "mouseout"},
{"topMouseOver", "mouseover"},
{"topMouseUp", "mouseup"},
{"topPointerOver", "pointerover"},
{"topPointerEnter", "pointerenter"},
{"topPointerDown", "pointerdown"},
{"topPointerUp", "pointerup"},
{"topPointerCancel", "pointercancel"},
{"topPointerOut", "pointerout"},
{"topPointerLeave", "pointerleave"},
{"topGotPointerCapture", "gotpointercapture"},
{"topLostPointerCapture", "lostpointercapture"},
{"topTouchStart", "touchstart"},
{"topTouchEnd", "touchend"},
{"topTouchCancel", "touchcancel"},
{"topKeyDown", "keydown"},
{"topKeyPress", "keypress"},
{"topKeyUp", "keyup"},
{"topBeforeInput", "beforeinput"},
{"topInput", "input"},
{"topCompositionStart", "compositionstart"},
{"topCompositionUpdate", "compositionupdate"},
{"topCompositionEnd", "compositionend"},
{"topDragStart", "dragstart"},
{"topDragEnd", "dragend"},
{"topDragEnter", "dragenter"},
{"topDragLeave", "dragleave"},
{"topDragOver", "dragover"},
{"topDrop", "drop"},
};
using SupportedEventTypeRegistry =
std::unordered_map<StrKey, const char *, StrKeyHash>;
static const SupportedEventTypeRegistry &getSupportedEvents() {
static SupportedEventTypeRegistry SUPPORTED_EVENTS = {
{"topAuxClick", "auxclick"},
{"topClick", "click"},
{"topContextMenu", "contextmenu"},
{"topDblClick", "dblclick"},
{"topMouseDown", "mousedown"},
{"topMouseEnter", "mouseenter"},
{"topMouseLeave", "mouseleave"},
{"topMouseOut", "mouseout"},
{"topMouseOver", "mouseover"},
{"topMouseUp", "mouseup"},
{"topPointerOver", "pointerover"},
{"topPointerEnter", "pointerenter"},
{"topPointerDown", "pointerdown"},
{"topPointerUp", "pointerup"},
{"topPointerCancel", "pointercancel"},
{"topPointerOut", "pointerout"},
{"topPointerLeave", "pointerleave"},
{"topGotPointerCapture", "gotpointercapture"},
{"topLostPointerCapture", "lostpointercapture"},
{"topTouchStart", "touchstart"},
{"topTouchEnd", "touchend"},
{"topTouchCancel", "touchcancel"},
{"topKeyDown", "keydown"},
{"topKeyPress", "keypress"},
{"topKeyUp", "keyup"},
{"topBeforeInput", "beforeinput"},
{"topInput", "input"},
{"topCompositionStart", "compositionstart"},
{"topCompositionUpdate", "compositionupdate"},
{"topCompositionEnd", "compositionend"},
{"topDragStart", "dragstart"},
{"topDragEnd", "dragend"},
{"topDragEnter", "dragenter"},
{"topDragLeave", "dragleave"},
{"topDragOver", "dragover"},
{"topDrop", "drop"},
};
return SUPPORTED_EVENTS;
}
EventTag PerformanceEntryReporter::onEventStart(const char *name) {
if (!isReportingEvents()) {
return 0;
}
auto it = SUPPORTED_EVENTS.find(name);
if (it == SUPPORTED_EVENTS.end()) {
const auto &supportedEvents = getSupportedEvents();
auto it = supportedEvents.find(name);
if (it == supportedEvents.end()) {
return 0;
}