SkWStream::writeText inlined.

Motivation: This function is used throughout SkPDF.

Note that the compiler can usually inline the result of strlen() for literal strings.

Before:
    out/Release/nanobench -m WStreamWriteText -q
        Timer overhead: 24.2ns
        ! -> high variance, ? -> moderate variance
            micros   	bench
              6.10  	WStreamWriteText	nonrendering

After:
    out/Release/nanobench -m WStreamWriteText -q
        Timer overhead: 23.9ns
        ! -> high variance, ? -> moderate variance
            micros   	bench
              2.51  	WStreamWriteText	nonrendering

PDF runtime change: -0.8% ±0.04%.

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1844343004

Review URL: https://codereview.chromium.org/1844343004

1 files changed, 18 insertions, 0 deletions

diff --git a/bench/PDFBench.cpp b/bench/PDFBench.cpp
index 9da745c280..df6873c596 100644
--- a/bench/PDFBench.cpp
+++ b/bench/PDFBench.cpp
@@ -17,6 +17,7 @@
 #include "SkPDFUtils.h"
 #include "SkPixmap.h"
 #include "SkRandom.h"
+#include "SkStream.h"
 
 namespace {
 struct NullWStream : public SkWStream {
@@ -190,9 +191,26 @@ struct PDFShaderBench : public Benchmark {
     }
 };
 
+struct WStreamWriteTextBenchmark : public Benchmark {
+    std::unique_ptr<SkWStream> fWStream;
+    WStreamWriteTextBenchmark() : fWStream(new NullWStream) {}
+    const char* onGetName() override { return "WStreamWriteText"; }
+    bool isSuitableFor(Backend backend) override {
+        return backend == kNonRendering_Backend;
+    }
+    void onDraw(int loops, SkCanvas*) override {
+        while (loops-- > 0) {
+            for (int i = 1000; i-- > 0;) {
+                fWStream->writeText("HELLO SKIA!\n");
+            }
+        }
+    }
+};
+
 }  // namespace
 DEF_BENCH(return new PDFImageBench;)
 DEF_BENCH(return new PDFJpegImageBench;)
 DEF_BENCH(return new PDFCompressionBench;)
 DEF_BENCH(return new PDFScalarBench;)
 DEF_BENCH(return new PDFShaderBench;)
+DEF_BENCH(return new WStreamWriteTextBenchmark;)