Sakurai/pdf.js
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Added dumb profiling instrumentation

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This commit is contained in:
Chris Jones 2011-05-04 21:39:07 -05:00
parent 10c7ea0770
commit a073e45eba
1 changed files with 14 additions and 0 deletions
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test.html
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@ -43,6 +43,19 @@ function prevPage() {
pageNum = (pageNum - 1 + numPages) % numPages; pageNum = (pageNum - 1 + numPages) % numPages;
displayPage(pageNum); displayPage(pageNum);
} }
function profile() {
const NUM_TRIALS = 10000;
var start = Date.now();
for (var i = 0; i < NUM_TRIALS; ++i)
displayPage(pageNum);
var end = Date.now();
var elapsed = (end - start);
alert("Drawing current page "+ NUM_TRIALS +" times took "+
(elapsed / 1000.0) +" seconds, "+
"~"+ (elapsed / NUM_TRIALS) +" ms/draw (totally unscientific)");
}
</script> </script>
</head> </head>
@ -51,6 +64,7 @@ function prevPage() {
<button onclick="prevPage();">Previous</button> <button onclick="prevPage();">Previous</button>
<input type="text" id="pageNumber" value="0"></input> <input type="text" id="pageNumber" value="0"></input>
<button onclick="nextPage();">Next</button> <button onclick="nextPage();">Next</button>
<button onclick="profile();">Profile</button>
<div id="viewer"> <div id="viewer">
<!-- Canvas dimensions must be specified in CSS pixels. CSS pixels <!-- Canvas dimensions must be specified in CSS pixels. CSS pixels
-- are always 96 dpi. These dimensions are 8.5x11in at 96dpi. --> -- are always 96 dpi. These dimensions are 8.5x11in at 96dpi. -->