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author | Evan Martin <martine@danga.com> | 2011-05-24 17:07:08 (GMT) |
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committer | Evan Martin <martine@danga.com> | 2011-05-25 01:02:29 (GMT) |
commit | 939597fb21015670131dbd843b1dc823843aa84c (patch) | |
tree | 03833c4e944997915d3b3e3c8715f0451ff36071 /src/parser_perftest.cc | |
parent | 8f36cec4bd63d774f87394076eeac6adc398b6ef (diff) | |
download | Ninja-939597fb21015670131dbd843b1dc823843aa84c.zip Ninja-939597fb21015670131dbd843b1dc823843aa84c.tar.gz Ninja-939597fb21015670131dbd843b1dc823843aa84c.tar.bz2 |
add a test program for evaluating depfile parse speed
Diffstat (limited to 'src/parser_perftest.cc')
-rw-r--r-- | src/parser_perftest.cc | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/parser_perftest.cc b/src/parser_perftest.cc new file mode 100644 index 0000000..1321629 --- /dev/null +++ b/src/parser_perftest.cc @@ -0,0 +1,57 @@ +// Copyright 2011 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include <stdio.h> +#include <stdlib.h> + +#include "parsers.h" +#include "util.h" + +int main(int argc, char* argv[]) { + if (argc < 2) { + printf("usage: %s <file1> <file2...>\n", argv[0]); + return 1; + } + + for (int i = 1; i < argc; ++i) { + const char* filename = argv[i]; + + for (int limit = 1 << 10; limit < (1<<20); limit *= 2) { + int64_t start = GetTimeMillis(); + for (int rep = 0; rep < limit; ++rep) { + string buf; + string err; + if (ReadFile(filename, &buf, &err) < 0) { + printf("%s: %s\n", filename, err.c_str()); + return 1; + } + + MakefileParser parser; + if (!parser.Parse(buf, &err)) { + printf("%s: %s\n", filename, err.c_str()); + return 1; + } + } + int64_t end = GetTimeMillis(); + + if (end - start > 100) { + int delta = (int)(end - start); + printf("%s: %.2fus\n", filename, (float)(delta*1000 / (float)limit)); + break; + } + } + } + + return 0; +} |