1 /* 2 * Copyright (C) 2018, 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 #ifndef ANDROID_STATS_LOG_STATS_WRITER_H 18 #define ANDROID_STATS_LOG_STATS_WRITER_H 19 20 #include <pthread.h> 21 #include <stdatomic.h> 22 #include <sys/socket.h> 23 24 /** 25 * Internal lock should not be exposed. This is bad design. 26 * TODO: rewrite it in c++ code and encapsulate the functionality in a 27 * StatsdWriter class. 28 */ 29 void statsd_writer_init_lock(); 30 int statsd_writer_init_trylock(); 31 void statsd_writer_init_unlock(); 32 33 struct android_log_transport_write { 34 const char* name; /* human name to describe the transport */ 35 atomic_int sock; 36 int (*available)(); /* Does not cause resources to be taken */ 37 int (*open)(); /* can be called multiple times, reusing current resources */ 38 void (*close)(); /* free up resources */ 39 /* write log to transport, returns number of bytes propagated, or -errno */ 40 int (*write)(struct timespec* ts, struct iovec* vec, size_t nr); 41 }; 42 43 #endif // ANDROID_STATS_LOG_STATS_WRITER_H 44
