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      1 /*
      2  * Copyright (C) 2010 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 
     18 #include <stdlib.h>
     19 #include <unistd.h>
     20 #include <cutils/log.h>
     21 #include <cutils/properties.h>
     22 #include <utils/Endian.h>
     23 #include <utils/Timers.h>
     24 
     25 #include <ui/GraphicLog.h>
     26 
     27 namespace android {
     28 
     29 ANDROID_SINGLETON_STATIC_INSTANCE(GraphicLog)
     30 
     31 static inline
     32 void writeInt32(uint8_t* base, size_t& pos, int32_t value) {
     33 #ifdef HAVE_LITTLE_ENDIAN
     34     int32_t v = value;
     35 #else
     36     int32_t v = htole32(value);
     37 #endif
     38     base[pos] = EVENT_TYPE_INT;
     39     memcpy(&base[pos+1], &v, sizeof(int32_t));
     40     pos += 1+sizeof(int32_t);
     41 }
     42 
     43 static inline
     44 void writeInt64(uint8_t* base,  size_t& pos, int64_t value) {
     45 #ifdef HAVE_LITTLE_ENDIAN
     46     int64_t v = value;
     47 #else
     48     int64_t v = htole64(value);
     49 #endif
     50     base[pos] = EVENT_TYPE_LONG;
     51     memcpy(&base[pos+1], &v, sizeof(int64_t));
     52     pos += 1+sizeof(int64_t);
     53 }
     54 
     55 void GraphicLog::logImpl(int32_t tag, int32_t buffer)
     56 {
     57     uint8_t scratch[2 + 2 + sizeof(int32_t) + sizeof(int64_t)];
     58     size_t pos = 0;
     59     scratch[pos++] = EVENT_TYPE_LIST;
     60     scratch[pos++] = 2;
     61     writeInt32(scratch, pos, buffer);
     62     writeInt64(scratch, pos, ns2ms( systemTime( SYSTEM_TIME_MONOTONIC ) ));
     63     android_bWriteLog(tag, scratch, sizeof(scratch));
     64 }
     65 
     66 void GraphicLog::logImpl(int32_t tag, int32_t identity, int32_t buffer)
     67 {
     68     uint8_t scratch[2 + 3 + sizeof(int32_t) + sizeof(int32_t) + sizeof(int64_t)];
     69     size_t pos = 0;
     70     scratch[pos++] = EVENT_TYPE_LIST;
     71     scratch[pos++] = 3;
     72     writeInt32(scratch, pos, buffer);
     73     writeInt32(scratch, pos, identity);
     74     writeInt64(scratch, pos, ns2ms( systemTime( SYSTEM_TIME_MONOTONIC ) ));
     75     android_bWriteLog(tag, scratch, sizeof(scratch));
     76 }
     77 
     78 GraphicLog::GraphicLog()
     79     : mEnabled(0)
     80 {
     81     char property[PROPERTY_VALUE_MAX];
     82     if (property_get("debug.graphic_log", property, NULL) > 0) {
     83         mEnabled = atoi(property);
     84     }
     85 }
     86 
     87 void GraphicLog::setEnabled(bool enable)
     88 {
     89     mEnabled = enable;
     90 }
     91 
     92 }
     93