log_read.h revision 0175b0747a1f55329109e84c9a1322dcb95e2848 
1/*
2 * Copyright (C) 2013-2014 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 _LIBS_LOG_LOG_READ_H
18#define _LIBS_LOG_LOG_READ_H
19
20#include <time.h>
21
22#define NS_PER_SEC 1000000000ULL
23#ifdef __cplusplus
24struct log_time : public timespec {
25public:
26    log_time(const timespec &T)
27    {
28        tv_sec = T.tv_sec;
29        tv_nsec = T.tv_nsec;
30    }
31    log_time()
32    {
33    }
34    log_time(clockid_t id)
35    {
36        clock_gettime(id, (timespec *) this);
37    }
38    log_time(const char *T)
39    {
40        const uint8_t *c = (const uint8_t *) T;
41        tv_sec = c[0] | (c[1] << 8) | (c[2] << 16) | (c[3] << 24);
42        tv_nsec = c[4] | (c[5] << 8) | (c[6] << 16) | (c[7] << 24);
43    }
44    bool operator== (const timespec &T) const
45    {
46        return (tv_sec == T.tv_sec) && (tv_nsec == T.tv_nsec);
47    }
48    bool operator!= (const timespec &T) const
49    {
50        return !(*this == T);
51    }
52    bool operator< (const timespec &T) const
53    {
54        return (tv_sec < T.tv_sec)
55            || ((tv_sec == T.tv_sec) && (tv_nsec < T.tv_nsec));
56    }
57    bool operator>= (const timespec &T) const
58    {
59        return !(*this < T);
60    }
61    bool operator> (const timespec &T) const
62    {
63        return (tv_sec > T.tv_sec)
64            || ((tv_sec == T.tv_sec) && (tv_nsec > T.tv_nsec));
65    }
66    bool operator<= (const timespec &T) const
67    {
68        return !(*this > T);
69    }
70    uint64_t nsec() const
71    {
72        return static_cast<uint64_t>(tv_sec) * NS_PER_SEC + tv_nsec;
73    }
74};
75#else
76typedef struct timespec log_time;
77#endif
78
79#endif /* define _LIBS_LOG_LOG_READ_H */
80