John Grossman | c7f57c6 | 2012-06-26 12:50:28 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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 | |
John Grossman | 79489c4 | 2012-07-20 10:17:26 -0700 | [diff] [blame] | 17 | #define LOG_TAG "common_time" |
| 18 | #include <utils/Log.h> |
| 19 | |
John Grossman | c7f57c6 | 2012-06-26 12:50:28 -0700 | [diff] [blame] | 20 | #include "utils.h" |
| 21 | |
| 22 | namespace android { |
| 23 | |
| 24 | void Timeout::setTimeout(int msec) { |
| 25 | if (msec < 0) { |
| 26 | mSystemEndTime = 0; |
| 27 | return; |
| 28 | } |
| 29 | |
| 30 | mSystemEndTime = systemTime() + (static_cast<nsecs_t>(msec) * 1000000); |
| 31 | } |
| 32 | |
| 33 | int Timeout::msecTillTimeout(nsecs_t nowTime) { |
| 34 | if (!mSystemEndTime) { |
| 35 | return -1; |
| 36 | } |
| 37 | |
| 38 | if (mSystemEndTime < nowTime) { |
| 39 | return 0; |
| 40 | } |
| 41 | |
| 42 | nsecs_t delta = mSystemEndTime - nowTime; |
| 43 | delta += 999999; |
| 44 | delta /= 1000000; |
| 45 | if (delta > 0x7FFFFFFF) { |
| 46 | return 0x7FFFFFFF; |
| 47 | } |
| 48 | |
| 49 | return static_cast<int>(delta); |
| 50 | } |
| 51 | |
John Grossman | 79489c4 | 2012-07-20 10:17:26 -0700 | [diff] [blame] | 52 | LogRing::LogRing(const char* header, size_t entries) |
| 53 | : mSize(entries) |
| 54 | , mWr(0) |
| 55 | , mIsFull(false) |
| 56 | , mHeader(header) { |
| 57 | mRingBuffer = new Entry[mSize]; |
| 58 | if (NULL == mRingBuffer) |
| 59 | ALOGE("Failed to allocate log ring with %u entries.", mSize); |
| 60 | } |
| 61 | |
| 62 | LogRing::~LogRing() { |
| 63 | if (NULL != mRingBuffer) |
| 64 | delete[] mRingBuffer; |
| 65 | } |
| 66 | |
| 67 | void LogRing::log(int prio, const char* tag, const char* fmt, ...) { |
| 68 | va_list argp; |
| 69 | va_start(argp, fmt); |
| 70 | internalLog(prio, tag, fmt, argp); |
| 71 | va_end(argp); |
| 72 | } |
| 73 | |
| 74 | void LogRing::log(const char* fmt, ...) { |
| 75 | va_list argp; |
| 76 | va_start(argp, fmt); |
| 77 | internalLog(0, NULL, fmt, argp); |
| 78 | va_end(argp); |
| 79 | } |
| 80 | |
| 81 | void LogRing::internalLog(int prio, |
| 82 | const char* tag, |
| 83 | const char* fmt, |
| 84 | va_list argp) { |
| 85 | if (NULL != mRingBuffer) { |
| 86 | Mutex::Autolock lock(&mLock); |
| 87 | String8 s(String8::formatV(fmt, argp)); |
| 88 | Entry* last = NULL; |
| 89 | |
| 90 | if (mIsFull || mWr) |
| 91 | last = &(mRingBuffer[(mWr + mSize - 1) % mSize]); |
| 92 | |
| 93 | |
| 94 | if ((NULL != last) && !last->s.compare(s)) { |
| 95 | gettimeofday(&(last->last_ts), NULL); |
| 96 | ++last->count; |
| 97 | } else { |
| 98 | gettimeofday(&mRingBuffer[mWr].first_ts, NULL); |
| 99 | mRingBuffer[mWr].last_ts = mRingBuffer[mWr].first_ts; |
| 100 | mRingBuffer[mWr].count = 1; |
| 101 | mRingBuffer[mWr].s.setTo(s); |
| 102 | |
| 103 | mWr = (mWr + 1) % mSize; |
| 104 | if (!mWr) |
| 105 | mIsFull = true; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | if (NULL != tag) |
| 110 | LOG_PRI_VA(prio, tag, fmt, argp); |
| 111 | } |
| 112 | |
| 113 | void LogRing::dumpLog(int fd) { |
| 114 | if (NULL == mRingBuffer) |
| 115 | return; |
| 116 | |
| 117 | Mutex::Autolock lock(&mLock); |
| 118 | |
| 119 | if (!mWr && !mIsFull) |
| 120 | return; |
| 121 | |
| 122 | char buf[1024]; |
| 123 | int res; |
| 124 | size_t start = mIsFull ? mWr : 0; |
| 125 | size_t count = mIsFull ? mSize : mWr; |
| 126 | static const char* kTimeFmt = "%a %b %d %Y %H:%M:%S"; |
| 127 | |
| 128 | res = snprintf(buf, sizeof(buf), "\n%s\n", mHeader); |
| 129 | if (res > 0) |
| 130 | write(fd, buf, res); |
| 131 | |
| 132 | for (size_t i = 0; i < count; ++i) { |
| 133 | struct tm t; |
| 134 | char timebuf[64]; |
| 135 | char repbuf[96]; |
| 136 | size_t ndx = (start + i) % mSize; |
| 137 | |
| 138 | if (1 != mRingBuffer[ndx].count) { |
| 139 | localtime_r(&mRingBuffer[ndx].last_ts.tv_sec, &t); |
| 140 | strftime(timebuf, sizeof(timebuf), kTimeFmt, &t); |
| 141 | snprintf(repbuf, sizeof(repbuf), |
| 142 | " (repeated %d times, last was %s.%03ld)", |
| 143 | mRingBuffer[ndx].count, |
| 144 | timebuf, |
| 145 | mRingBuffer[ndx].last_ts.tv_usec / 1000); |
| 146 | repbuf[sizeof(repbuf) - 1] = 0; |
| 147 | } else { |
| 148 | repbuf[0] = 0; |
| 149 | } |
| 150 | |
| 151 | localtime_r(&mRingBuffer[ndx].first_ts.tv_sec, &t); |
| 152 | strftime(timebuf, sizeof(timebuf), kTimeFmt, &t); |
| 153 | res = snprintf(buf, sizeof(buf), "[%2d] %s.%03ld :: %s%s\n", |
| 154 | i, timebuf, |
| 155 | mRingBuffer[ndx].first_ts.tv_usec / 1000, |
| 156 | mRingBuffer[ndx].s.string(), |
| 157 | repbuf); |
| 158 | |
| 159 | if (res > 0) |
| 160 | write(fd, buf, res); |
| 161 | } |
| 162 | } |
| 163 | |
John Grossman | c7f57c6 | 2012-06-26 12:50:28 -0700 | [diff] [blame] | 164 | } // namespace android |