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      1 /*
      2  * Copyright (C) 2008 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 // All static variables go here, to control initialization and
     18 // destruction order in the library.
     19 
     20 #include <private/utils/Static.h>
     21 
     22 #include <utils/BufferedTextOutput.h>
     23 #include <utils/Log.h>
     24 
     25 namespace android {
     26 
     27 class LibUtilsFirstStatics
     28 {
     29 public:
     30     LibUtilsFirstStatics()
     31     {
     32         initialize_string8();
     33         initialize_string16();
     34     }
     35 
     36     ~LibUtilsFirstStatics()
     37     {
     38         terminate_string16();
     39         terminate_string8();
     40     }
     41 };
     42 
     43 static LibUtilsFirstStatics gFirstStatics;
     44 int gDarwinCantLoadAllObjects = 1;
     45 
     46 // ------------ Text output streams
     47 
     48 Vector<int32_t> gTextBuffers;
     49 
     50 class LogTextOutput : public BufferedTextOutput
     51 {
     52 public:
     53     LogTextOutput() : BufferedTextOutput(MULTITHREADED) { }
     54     virtual ~LogTextOutput() { };
     55 
     56 protected:
     57     virtual status_t writeLines(const struct iovec& vec, size_t N)
     58     {
     59         android_writevLog(&vec, N);
     60         return NO_ERROR;
     61     }
     62 };
     63 
     64 class FdTextOutput : public BufferedTextOutput
     65 {
     66 public:
     67     FdTextOutput(int fd) : BufferedTextOutput(MULTITHREADED), mFD(fd) { }
     68     virtual ~FdTextOutput() { };
     69 
     70 protected:
     71     virtual status_t writeLines(const struct iovec& vec, size_t N)
     72     {
     73         writev(mFD, &vec, N);
     74         return NO_ERROR;
     75     }
     76 
     77 private:
     78     int mFD;
     79 };
     80 
     81 static LogTextOutput gLogTextOutput;
     82 static FdTextOutput gStdoutTextOutput(STDOUT_FILENO);
     83 static FdTextOutput gStderrTextOutput(STDERR_FILENO);
     84 
     85 TextOutput& alog(gLogTextOutput);
     86 TextOutput& aout(gStdoutTextOutput);
     87 TextOutput& aerr(gStderrTextOutput);
     88 
     89 }   // namespace android
     90