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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 "chre/platform/shared/pal_system_api.h"
     18 
     19 #include <cstdarg>
     20 #include <cstdio>
     21 
     22 #include "chre/pal/system.h"
     23 #include "chre/platform/log.h"
     24 #include "chre/platform/memory.h"
     25 #include "chre/platform/system_time.h"
     26 
     27 //! Define a format string for PAL logs. This is defined as a macro so that it
     28 //! can be used as a string literal by platform implementations of the logging
     29 //! macros.
     30 #define PAL_LOG_FORMAT_STR "PAL: %s"
     31 
     32 namespace chre {
     33 
     34 uint64_t palSystemApiGetCurrentTime() {
     35   return SystemTime::getMonotonicTime().toRawNanoseconds();
     36 }
     37 
     38 void palSystemApiLog(enum chreLogLevel level, const char *formatStr, ...) {
     39   char logBuf[512];
     40   va_list args;
     41 
     42   va_start(args, formatStr);
     43   vsnprintf(logBuf, sizeof(logBuf), formatStr, args);
     44   va_end(args);
     45 
     46   switch (level) {
     47     case CHRE_LOG_ERROR:
     48       LOGE(PAL_LOG_FORMAT_STR, logBuf);
     49       break;
     50     case CHRE_LOG_WARN:
     51       LOGW(PAL_LOG_FORMAT_STR, logBuf);
     52       break;
     53     case CHRE_LOG_INFO:
     54       LOGI(PAL_LOG_FORMAT_STR, logBuf);
     55       break;
     56     case CHRE_LOG_DEBUG:
     57     default:
     58       LOGD(PAL_LOG_FORMAT_STR, logBuf);
     59   }
     60 }
     61 
     62 // Initialize the CHRE System API with function implementations provided above.
     63 const chrePalSystemApi gChrePalSystemApi = {
     64   CHRE_PAL_SYSTEM_API_CURRENT_VERSION, /* version */
     65   palSystemApiGetCurrentTime,          /* getCurrentTime */
     66   palSystemApiLog,                     /* log */
     67   palSystemApiMemoryAlloc,             /* memoryAlloc */
     68   palSystemApiMemoryFree,              /* memoryFree */
     69 };
     70 
     71 }  // namespace chre
     72