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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/214578">214578</a></dd>
<dt>Author</dt> <dd>jmarcell@apple.com</dd>
<dt>Date</dt> <dd>2017-03-29 16:41:55 -0700 (Wed, 29 Mar 2017)</dd>
</dl>

<h3>Log Message</h3>
<pre>Cherry-pick <a href="http://trac.webkit.org/projects/webkit/changeset/214449">r214449</a>. rdar://problem/30787872</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari604114branchSourceJavaScriptCoreChangeLog">branches/safari-604.1.14-branch/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#branchessafari604114branchSourceWebKit2ChangeLog">branches/safari-604.1.14-branch/Source/WebKit2/ChangeLog</a></li>
<li><a href="#branchessafari604114branchSourceWebKit2UIProcess_WKWebViewPrintFormattermm">branches/safari-604.1.14-branch/Source/WebKit2/UIProcess/_WKWebViewPrintFormatter.mm</a></li>
<li><a href="#branchessafari604114branchSourceWebKit2UIProcess_WKWebViewPrintFormatterInternalh">branches/safari-604.1.14-branch/Source/WebKit2/UIProcess/_WKWebViewPrintFormatterInternal.h</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari604114branchSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-604.1.14-branch/Source/JavaScriptCore/ChangeLog (214577 => 214578)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-604.1.14-branch/Source/JavaScriptCore/ChangeLog        2017-03-29 23:41:53 UTC (rev 214577)
+++ branches/safari-604.1.14-branch/Source/JavaScriptCore/ChangeLog        2017-03-29 23:41:55 UTC (rev 214578)
</span><span class="lines">@@ -1,25 +1,29 @@
</span><span class="cx"> 2017-03-29  Jason Marcell  &lt;jmarcell@apple.com&gt;
</span><span class="cx"> 
</span><del>-        Cherry-pick r214406. rdar://problem/30542960
</del><ins>+        Cherry-pick r214449. rdar://problem/30787872
</ins><span class="cx"> 
</span><span class="cx">     2017-03-29  Jason Marcell  &lt;jmarcell@apple.com&gt;
</span><span class="cx"> 
</span><del>-            Cherry-pick r214404. rdar://problem/31095987
</del><ins>+            Cherry-pick r214406. rdar://problem/30542960
</ins><span class="cx"> 
</span><del>-        2017-03-24  Mark Lam  &lt;mark.lam@apple.com&gt;
</del><ins>+        2017-03-29  Jason Marcell  &lt;jmarcell@apple.com&gt;
</ins><span class="cx"> 
</span><del>-                Add some instrumentation in Heap::resumeThePeriphery() to help debug an issue.
-                https://bugs.webkit.org/show_bug.cgi?id=170086
-                &lt;rdar://problem/31253673&gt;
</del><ins>+                Cherry-pick r214404. rdar://problem/31095987
</ins><span class="cx"> 
</span><del>-                Reviewed by Saam Barati.
</del><ins>+            2017-03-24  Mark Lam  &lt;mark.lam@apple.com&gt;
</ins><span class="cx"> 
</span><del>-                Adding some instrumentation in Heap::resumeThePeriphery() to dump some Heap state
-                just before we RELEASE_ASSERT_NOT_REACHED.
</del><ins>+                    Add some instrumentation in Heap::resumeThePeriphery() to help debug an issue.
+                    https://bugs.webkit.org/show_bug.cgi?id=170086
+                    &lt;rdar://problem/31253673&gt;
</ins><span class="cx"> 
</span><del>-                * heap/Heap.cpp:
-                (JSC::Heap::resumeThePeriphery):
</del><ins>+                    Reviewed by Saam Barati.
</ins><span class="cx"> 
</span><ins>+                    Adding some instrumentation in Heap::resumeThePeriphery() to dump some Heap state
+                    just before we RELEASE_ASSERT_NOT_REACHED.
+
+                    * heap/Heap.cpp:
+                    (JSC::Heap::resumeThePeriphery):
+
</ins><span class="cx"> 2017-03-22  Mark Lam  &lt;mark.lam@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Add support for Error.stackTraceLimit.
</span></span></pre></div>
<a id="branchessafari604114branchSourceWebKit2ChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-604.1.14-branch/Source/WebKit2/ChangeLog (214577 => 214578)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-604.1.14-branch/Source/WebKit2/ChangeLog        2017-03-29 23:41:53 UTC (rev 214577)
+++ branches/safari-604.1.14-branch/Source/WebKit2/ChangeLog        2017-03-29 23:41:55 UTC (rev 214578)
</span><span class="lines">@@ -1,5 +1,31 @@
</span><span class="cx"> 2017-03-29  Jason Marcell  &lt;jmarcell@apple.com&gt;
</span><span class="cx"> 
</span><ins>+        Cherry-pick r214449. rdar://problem/30787872
+
+    2017-03-27  Andy Estes  &lt;aestes@apple.com&gt;
+
+            [iOS] Suppress page count recalc when setting a snapshot paper rect
+            https://bugs.webkit.org/show_bug.cgi?id=170156
+            &lt;rdar://problem/30787872&gt;
+
+            Reviewed by Tim Horton.
+
+            When _WKWebViewPrintFormatter computes a page count for snapshotting, it updates the paper
+            rect, which triggers UIKit to ask for the page count again while we're in the middle of
+            printing, putting us in a bad state.
+
+            Suppress page count recalc while setting the new paper rect, since we know this will not
+            cause it to change.
+
+            * UIProcess/_WKWebViewPrintFormatter.mm:
+            (-[_WKWebViewPrintFormatter _setSnapshotPaperRect:]): Temporarily set
+            _suppressPageCountRecalc to YES before updating the paper rect.
+            (-[_WKWebViewPrintFormatter _setNeedsRecalc]): Only call [super _setNeedsRecalc] if
+            _suppressPageCountRecalc is NO.
+            * UIProcess/_WKWebViewPrintFormatterInternal.h: Declared -_setNeedsRecalc.
+
+2017-03-29  Jason Marcell  &lt;jmarcell@apple.com&gt;
+
</ins><span class="cx">         Cherry-pick r214406. rdar://problem/30542960
</span><span class="cx"> 
</span><span class="cx">     2017-03-25  Andy Estes  &lt;aestes@apple.com&gt;
</span></span></pre></div>
<a id="branchessafari604114branchSourceWebKit2UIProcess_WKWebViewPrintFormattermm"></a>
<div class="modfile"><h4>Modified: branches/safari-604.1.14-branch/Source/WebKit2/UIProcess/_WKWebViewPrintFormatter.mm (214577 => 214578)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-604.1.14-branch/Source/WebKit2/UIProcess/_WKWebViewPrintFormatter.mm        2017-03-29 23:41:53 UTC (rev 214577)
+++ branches/safari-604.1.14-branch/Source/WebKit2/UIProcess/_WKWebViewPrintFormatter.mm        2017-03-29 23:41:55 UTC (rev 214578)
</span><span class="lines">@@ -31,6 +31,7 @@
</span><span class="cx"> #import &quot;WKWebViewInternal.h&quot;
</span><span class="cx"> #import &quot;_WKFrameHandle.h&quot;
</span><span class="cx"> #import &lt;wtf/RetainPtr.h&gt;
</span><ins>+#import &lt;wtf/SetForScope.h&gt;
</ins><span class="cx"> 
</span><span class="cx"> @interface UIPrintPageRenderer ()
</span><span class="cx"> @property (nonatomic) CGRect paperRect;
</span><span class="lines">@@ -40,6 +41,7 @@
</span><span class="cx"> @implementation _WKWebViewPrintFormatter {
</span><span class="cx">     RetainPtr&lt;_WKFrameHandle&gt; _frameToPrint;
</span><span class="cx">     RetainPtr&lt;CGPDFDocumentRef&gt; _printedDocument;
</span><ins>+    BOOL _suppressPageCountRecalc;
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> - (_WKFrameHandle *)frameToPrint
</span><span class="lines">@@ -61,6 +63,7 @@
</span><span class="cx"> 
</span><span class="cx"> - (void)_setSnapshotPaperRect:(CGRect)paperRect
</span><span class="cx"> {
</span><ins>+    SetForScope&lt;BOOL&gt; suppressPageCountRecalc(_suppressPageCountRecalc, YES);
</ins><span class="cx">     UIPrintPageRenderer *printPageRenderer = self.printPageRenderer;
</span><span class="cx">     printPageRenderer.paperRect = paperRect;
</span><span class="cx">     printPageRenderer.printableRect = paperRect;
</span><span class="lines">@@ -73,6 +76,12 @@
</span><span class="cx">     return std::min&lt;NSUInteger&gt;(pageCount, NSIntegerMax);
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+- (void)_setNeedsRecalc
+{
+    if (!_suppressPageCountRecalc)
+        [super _setNeedsRecalc];
+}
+
</ins><span class="cx"> - (CGRect)rectForPageAtIndex:(NSInteger)pageIndex
</span><span class="cx"> {
</span><span class="cx">     if (self.snapshotFirstPage)
</span></span></pre></div>
<a id="branchessafari604114branchSourceWebKit2UIProcess_WKWebViewPrintFormatterInternalh"></a>
<div class="modfile"><h4>Modified: branches/safari-604.1.14-branch/Source/WebKit2/UIProcess/_WKWebViewPrintFormatterInternal.h (214577 => 214578)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-604.1.14-branch/Source/WebKit2/UIProcess/_WKWebViewPrintFormatterInternal.h        2017-03-29 23:41:53 UTC (rev 214577)
+++ branches/safari-604.1.14-branch/Source/WebKit2/UIProcess/_WKWebViewPrintFormatterInternal.h        2017-03-29 23:41:55 UTC (rev 214578)
</span><span class="lines">@@ -29,6 +29,7 @@
</span><span class="cx"> 
</span><span class="cx"> @interface UIPrintFormatter ()
</span><span class="cx"> - (CGRect)_pageContentRect:(BOOL)firstPage;
</span><ins>+- (void)_setNeedsRecalc;
</ins><span class="cx"> @end
</span><span class="cx"> 
</span><span class="cx"> @interface _WKWebViewPrintFormatter ()
</span></span></pre>
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