utils.h revision 9759e1b1ce76185aa539aeea2fb1cbd8382156e7 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef SIMPLE_PERF_UTILS_H_
18#define SIMPLE_PERF_UTILS_H_
19
20#include <stddef.h>
21#include <stdio.h>
22#include <stdlib.h>
23#include <string>
24#include <vector>
25
26void PrintIndented(size_t indent, const char* fmt, ...);
27
28class LineReader {
29 public:
30  LineReader(FILE* fp) : fp_(fp), buf_(nullptr), bufsize_(0) {
31  }
32
33  ~LineReader() {
34    free(buf_);
35    fclose(fp_);
36  }
37
38  char* ReadLine() {
39    if (getline(&buf_, &bufsize_, fp_) != -1) {
40      return buf_;
41    }
42    return nullptr;
43  }
44
45  size_t MaxLineSize() {
46    return bufsize_;
47  }
48
49 private:
50  FILE* fp_;
51  char* buf_;
52  size_t bufsize_;
53};
54
55bool IsPowerOfTwo(uint64_t value);
56
57bool NextArgumentOrError(const std::vector<std::string>& args, size_t* pi);
58
59#define ALIGN(value, alignment) (((value) + (alignment)-1) & ~((alignment)-1))
60
61#endif  // SIMPLE_PERF_UTILS_H_
62