+BENCHMARK_DRAW_LINE();
+
+template <class Func>
+void countHits(Func func, size_t n) {
+ StringPiece needles = "\r\n\1";
+ FOR_EACH_RANGE (i, 0, n) {
+ size_t p, c = 0;
+ for (StringPiece left = file;
+ (p = func(left, needles)) != StringPiece::npos;
+ left.advance(p + 1)) {
+ ++c;
+ }
+ doNotOptimizeAway(c);
+ }
+}
+
+template <class Func>
+void findFirstOfRange(StringPiece needles, Func func, size_t n) {
+ FOR_EACH_RANGE (i, 0, n) {
+ const StringPiece haystack = vstrp[i % kVstrSize];
+ doNotOptimizeAway(func(haystack, needles));
+ char x = haystack[0];
+ doNotOptimizeAway(&x);
+ }
+}
+
+const string delims1 = "b";
+
+BENCHMARK(FindFirstOf1NeedlesBase, n) {
+ findFirstOfRange(delims1, detail::qfind_first_byte_of, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf1NeedlesNoSSE, n) {
+ findFirstOfRange(delims1, detail::qfind_first_byte_of_nosse, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf1NeedlesStd, n) {
+ findFirstOfRange(delims1, detail::qfind_first_byte_of_std, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf1NeedlesByteSet, n) {
+ findFirstOfRange(delims1, detail::qfind_first_byte_of_byteset, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf1NeedlesBitSet, n) {
+ findFirstOfRange(delims1, detail::qfind_first_byte_of_bitset, n);
+}
+
+BENCHMARK_DRAW_LINE();
+
+const string delims2 = "bc";
+
+BENCHMARK(FindFirstOf2NeedlesBase, n) {
+ findFirstOfRange(delims2, detail::qfind_first_byte_of, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf2NeedlesNoSSE, n) {
+ findFirstOfRange(delims2, detail::qfind_first_byte_of_nosse, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf2NeedlesStd, n) {
+ findFirstOfRange(delims2, detail::qfind_first_byte_of_std, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf2NeedlesByteSet, n) {
+ findFirstOfRange(delims2, detail::qfind_first_byte_of_byteset, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf2NeedlesBitSet, n) {
+ findFirstOfRange(delims2, detail::qfind_first_byte_of_bitset, n);
+}
+
+BENCHMARK_DRAW_LINE();
+
+const string delims4 = "bcde";
+
+BENCHMARK(FindFirstOf4NeedlesBase, n) {
+ findFirstOfRange(delims4, detail::qfind_first_byte_of, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf4NeedlesNoSSE, n) {
+ findFirstOfRange(delims4, detail::qfind_first_byte_of_nosse, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf4NeedlesStd, n) {
+ findFirstOfRange(delims4, detail::qfind_first_byte_of_std, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf4NeedlesByteSet, n) {
+ findFirstOfRange(delims4, detail::qfind_first_byte_of_byteset, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf4NeedlesBitSet, n) {
+ findFirstOfRange(delims4, detail::qfind_first_byte_of_bitset, n);
+}
+
+BENCHMARK_DRAW_LINE();
+
+const string delims8 = "0123456b";
+
+BENCHMARK(FindFirstOf8NeedlesBase, n) {
+ findFirstOfRange(delims8, detail::qfind_first_byte_of, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf8NeedlesNoSSE, n) {
+ findFirstOfRange(delims8, detail::qfind_first_byte_of_nosse, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf8NeedlesStd, n) {
+ findFirstOfRange(delims8, detail::qfind_first_byte_of_std, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf8NeedlesByteSet, n) {
+ findFirstOfRange(delims8, detail::qfind_first_byte_of_byteset, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf8NeedlesBitSet, n) {
+ findFirstOfRange(delims8, detail::qfind_first_byte_of_bitset, n);
+}
+
+BENCHMARK_DRAW_LINE();
+
+const string delims16 = "0123456789bcdefg";
+
+BENCHMARK(FindFirstOf16NeedlesBase, n) {
+ findFirstOfRange(delims16, detail::qfind_first_byte_of, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf16NeedlesNoSSE, n) {
+ findFirstOfRange(delims16, detail::qfind_first_byte_of_nosse, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf16NeedlesStd, n) {
+ findFirstOfRange(delims16, detail::qfind_first_byte_of_std, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf16NeedlesByteSet, n) {
+ findFirstOfRange(delims16, detail::qfind_first_byte_of_byteset, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf16NeedlesBitSet, n) {
+ findFirstOfRange(delims16, detail::qfind_first_byte_of_bitset, n);
+}
+
+BENCHMARK_DRAW_LINE();
+
+const string delims32 = "!bcdefghijklmnopqrstuvwxyz_012345";
+
+BENCHMARK(FindFirstOf32NeedlesBase, n) {
+ findFirstOfRange(delims32, detail::qfind_first_byte_of, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf32NeedlesNoSSE, n) {
+ findFirstOfRange(delims32, detail::qfind_first_byte_of_nosse, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf32NeedlesStd, n) {
+ findFirstOfRange(delims32, detail::qfind_first_byte_of_std, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf32NeedlesByteSet, n) {
+ findFirstOfRange(delims32, detail::qfind_first_byte_of_byteset, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf32NeedlesBitSet, n) {
+ findFirstOfRange(delims32, detail::qfind_first_byte_of_bitset, n);
+}
+
+BENCHMARK_DRAW_LINE();
+
+const string delims64 =
+ "!bcdefghijklmnopqrstuvwxyz_"
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ-0123456789$";
+
+BENCHMARK(FindFirstOf64NeedlesBase, n) {
+ findFirstOfRange(delims64, detail::qfind_first_byte_of, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf64NeedlesNoSSE, n) {
+ findFirstOfRange(delims64, detail::qfind_first_byte_of_nosse, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf64NeedlesStd, n) {
+ findFirstOfRange(delims64, detail::qfind_first_byte_of_std, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf64NeedlesByteSet, n) {
+ findFirstOfRange(delims64, detail::qfind_first_byte_of_byteset, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOf64NeedlesBitSet, n) {
+ findFirstOfRange(delims64, detail::qfind_first_byte_of_bitset, n);
+}
+
+BENCHMARK_DRAW_LINE();
+
+template <class Func>
+void findFirstOfRandom(Func func, size_t iters) {
+ for (size_t i = 0; i < iters; ++i) {
+ auto test = i % ffoDelim.size();
+ auto p = func(ffoTestString, ffoDelim[test]);
+ doNotOptimizeAway(p);
+ }
+}
+
+BENCHMARK(FindFirstOfRandomBase, n) {
+ findFirstOfRandom(detail::qfind_first_byte_of, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOfRandomNoSSE, n) {
+ findFirstOfRandom(detail::qfind_first_byte_of_nosse, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOfRandomStd, n) {
+ findFirstOfRandom(detail::qfind_first_byte_of_std, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOfRandomByteSet, n) {
+ findFirstOfRandom(detail::qfind_first_byte_of_byteset, n);
+}
+
+BENCHMARK_RELATIVE(FindFirstOfRandomBitSet, n) {
+ findFirstOfRandom(detail::qfind_first_byte_of_bitset, n);
+}
+
+BENCHMARK_DRAW_LINE();
+
+BENCHMARK(CountDelimsBase, n) {
+ countHits(detail::qfind_first_byte_of, n);
+}
+
+BENCHMARK_RELATIVE(CountDelimsNoSSE, n) {
+ countHits(detail::qfind_first_byte_of_nosse, n);
+}
+
+BENCHMARK_RELATIVE(CountDelimsStd, n) {
+ countHits(detail::qfind_first_byte_of_std, n);
+}
+
+BENCHMARK_RELATIVE(CountDelimsByteSet, n) {
+ countHits(detail::qfind_first_byte_of_byteset, n);
+}
+
+BENCHMARK_RELATIVE(CountDelimsBitSet, n) {
+ countHits(detail::qfind_first_byte_of_bitset, n);
+}
+
+BENCHMARK_DRAW_LINE();
+
+BENCHMARK(FindFirstOfOffsetRange, n) {
+ StringPiece haystack(str);
+ folly::StringPiece needles("bc");
+ DCHECK_EQ(haystack.size() - 1, haystack.find_first_of(needles, 1)); // works!
+ FOR_EACH_RANGE (i, 0, n) {
+ size_t pos = i % 2; // not a constant to prevent optimization
+ doNotOptimizeAway(haystack.find_first_of(needles, pos));
+ char x = haystack[0];
+ doNotOptimizeAway(&x);
+ }
+}
+
+BENCHMARK_DRAW_LINE();
+