| // 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 "depfile_parser.h" |
| #include "util.h" |
| #include "metrics.h" |
| |
| int main(int argc, char* argv[]) { |
| if (argc < 2) { |
| printf("usage: %s <file1> <file2...>\n", argv[0]); |
| return 1; |
| } |
| |
| vector<float> times; |
| 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; |
| } |
| |
| DepfileParser 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); |
| float time = delta*1000 / (float)limit; |
| printf("%s: %.1fus\n", filename, time); |
| times.push_back(time); |
| break; |
| } |
| } |
| } |
| |
| if (!times.empty()) { |
| float min = times[0]; |
| float max = times[0]; |
| float total = 0; |
| for (size_t i = 0; i < times.size(); ++i) { |
| total += times[i]; |
| if (times[i] < min) |
| min = times[i]; |
| else if (times[i] > max) |
| max = times[i]; |
| } |
| |
| printf("min %.1fus max %.1fus avg %.1fus\n", |
| min, max, total / times.size()); |
| } |
| |
| return 0; |
| } |