Expose API for sending memory pressure events

Author: Scony

Source/WebKit/UIProcess/API/glib/WebKitWebView.cpp

@@ -5071,6 +5071,13 @@ WebKitWebsitePolicies* webkit_web_view_get_website_policies(WebKitWebView* webVi
     return webView->priv->websitePolicies.get();
 }
 
+void webkit_web_view_send_memory_pressure_event(WebKitWebView *webView, gboolean critical)
+{
+    g_return_if_fail(WEBKIT_IS_WEB_VIEW(webView));
+
+    getPage(webView).sendMemoryPressureEvent(critical);
+}
+
 void webkitWebViewSetIsWebProcessResponsive(WebKitWebView* webView, bool isResponsive)
 {
     if (webView->priv->isWebProcessResponsive == isResponsive)

Source/WebKit/UIProcess/API/wpe/WebKitWebView.h

@@ -558,6 +558,10 @@ webkit_web_view_get_tls_info                         (WebKitWebView
 WEBKIT_API WebKitUserContentManager *
 webkit_web_view_get_user_content_manager             (WebKitWebView             *web_view);
 
+WEBKIT_API void
+webkit_web_view_send_memory_pressure_event           (WebKitWebView               *web_view,
+                                                      gboolean                    critical);
+
 WEBKIT_API gboolean
 webkit_web_view_is_editable                          (WebKitWebView             *web_view);
 

Source/WebKit/UIProcess/WebPageProxy.cpp

@@ -3098,6 +3098,12 @@ const NativeWebKeyboardEvent& WebPageProxy::firstQueuedKeyEvent() const
     return m_keyEventQueue.first();
 }
 
+void WebPageProxy::sendMemoryPressureEvent(bool critical) const
+{
+    for (auto& processPool : WebProcessPool::allProcessPools())
+        processPool->sendMemoryPressureEvent(critical);
+}
+
 bool WebPageProxy::handleKeyboardEvent(const NativeWebKeyboardEvent& event)
 {
     if (!hasRunningProcess())

Source/WebKit/UIProcess/WebPageProxy.h

@@ -2140,6 +2140,8 @@ class WebPageProxy final : public API::ObjectImpl<API::Object::Type::Page>
     void clearNotificationPermissionState();
 #endif
 
+    void sendMemoryPressureEvent(bool critical) const;
+
 private:
     WebPageProxy(PageClient&, WebProcessProxy&, Ref<API::PageConfiguration>&&);
     void platformInitialize();