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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 <hwbinder/Static.h>
     21 
     22 #include <hwbinder/BufferedTextOutput.h>
     23 #include <hwbinder/IPCThreadState.h>
     24 #include <utils/Log.h>
     25 
     26 namespace android {
     27 namespace hardware {
     28 
     29 // ------------ Text output streams
     30 
     31 Vector<int32_t> gTextBuffers;
     32 
     33 class LogTextOutput : public BufferedTextOutput
     34 {
     35 public:
     36     LogTextOutput() : BufferedTextOutput(MULTITHREADED) { }
     37     virtual ~LogTextOutput() { };
     38 
     39 protected:
     40     virtual status_t writeLines(const struct iovec& vec, size_t N)
     41     {
     42         //android_writevLog(&vec, N);       <-- this is now a no-op
     43         if (N != 1) ALOGI("WARNING: writeLines N=%zu\n", N);
     44         ALOGI("%.*s", (int)vec.iov_len, (const char*) vec.iov_base);
     45         return NO_ERROR;
     46     }
     47 };
     48 
     49 class FdTextOutput : public BufferedTextOutput
     50 {
     51 public:
     52     explicit FdTextOutput(int fd) : BufferedTextOutput(MULTITHREADED), mFD(fd) { }
     53     virtual ~FdTextOutput() { };
     54 
     55 protected:
     56     virtual status_t writeLines(const struct iovec& vec, size_t N)
     57     {
     58         writev(mFD, &vec, N);
     59         return NO_ERROR;
     60     }
     61 
     62 private:
     63     int mFD;
     64 };
     65 
     66 static LogTextOutput gLogTextOutput;
     67 static FdTextOutput gStdoutTextOutput(STDOUT_FILENO);
     68 static FdTextOutput gStderrTextOutput(STDERR_FILENO);
     69 
     70 TextOutput& alog(gLogTextOutput);
     71 TextOutput& aout(gStdoutTextOutput);
     72 TextOutput& aerr(gStderrTextOutput);
     73 
     74 // ------------ ProcessState.cpp
     75 
     76 Mutex gProcessMutex;
     77 sp<ProcessState> gProcess;
     78 
     79 class LibHwbinderIPCtStatics
     80 {
     81 public:
     82     LibHwbinderIPCtStatics()
     83     {
     84     }
     85 
     86     ~LibHwbinderIPCtStatics()
     87     {
     88         IPCThreadState::shutdown();
     89     }
     90 };
     91 
     92 static LibHwbinderIPCtStatics gIPCStatics;
     93 
     94 }   // namespace hardware
     95 }   // namespace android
     96