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      1 /*
      2  * Copyright (C) 2017 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 #include "log.h"
     18 
     19 #ifndef ANDROID
     20 #include <stdarg.h>
     21 #ifdef USE_LOG_TIMESTAMPS
     22 #include <time.h>
     23 #endif  // USE_LOG_TIMESTAMPS
     24 
     25 static void vlogf(FILE* stream, const char* fmt, va_list args) {
     26 #ifdef USE_LOG_TIMESTAMPS
     27     struct timespec ts;
     28     struct tm localTime;
     29     static bool newLine = true;
     30     if (newLine && clock_gettime(CLOCK_REALTIME, &ts) == 0) {
     31         time_t now = ts.tv_sec;
     32         if (localtime_r(&now, &localTime)) {
     33             char format[32];
     34             char timestamp[1024];
     35             snprintf(format, sizeof(format), "[%%T.%03lld] ", (long long)(ts.tv_nsec) / 1000000);
     36             strftime(timestamp, sizeof(timestamp), format, &localTime);
     37             fprintf(stream, "%s ", timestamp);
     38         }
     39     }
     40     newLine = (fmt[strlen(fmt) - 1] == '\n');
     41 #endif  // USE_LOG_TIMESTAMPS
     42     vfprintf(stream, fmt, args);
     43 }
     44 
     45 static void logf(FILE* stream, const char* fmt, ...) {
     46     va_list args;
     47     va_start(args, fmt);
     48     vlogf(stream, fmt, args);
     49     va_end(args);
     50 }
     51 
     52 void loge(const char* fmt, ...) {
     53     va_list args;
     54     va_start(args, fmt);
     55     vlogf(stderr, fmt, args);
     56     va_end(args);
     57 }
     58 
     59 void logd(const char* fmt, ...) {
     60     va_list args;
     61     va_start(args, fmt);
     62     vlogf(stdout, fmt, args);
     63     va_end(args);
     64 }
     65 #endif  // !ANDROID
     66