Android进程机制分析的相关内容

【Android 进程保活】应用进程拉活 ( 系统 Service 机制拉活 | Service 组件 onStartCommand 方法分析 | 源码资源 )（三）

三、测试效果程序正常启动 , 运行正常 ,查询 oom_adj 值 , 0 00 , 前台进程 ;在手机中手动杀掉进程 , 杀掉进程后 , 又重新启动了一个相同进程 , 进程号改变了 ;( 测试时没有抓到两个进程同框的画面 , 只截取了下面一张图 )拉起后是个后台进程 , 任务栈中看不到 ;四、 ...

【Android 进程保活】应用进程拉活 ( 系统 Service 机制拉活 | Service 组件 onStartCommand 方法分析 | 源码资源 )（二）

4、 onStartCommand 函数 START_NOT_STICKY 返回值Service.START_NOT_STICKY : " 非粘性 " , onStartCommand 方法返回该返回值时 , 如果在执行 onStartCommand 后 , 服务被杀死 , 系统不会重启 Servi...

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【Android 进程保活】应用进程拉活 ( 系统 Service 机制拉活 | Service 组件 onStartCommand 方法分析 | 源码资源 )（一）

文章目录一、 Service 组件 onStartCommand 方法分析1、 onStartCommand 函数返回值分析2、 onStartCommand 函数 START_STICKY_COMPATIBILITY 返回值3、 onStartCommand 函数 START_STICKY 返回值...

Android系统进程间通信（IPC）机制Binder中的Server启动过程源代码分析(4)

这个函数的实现很简单，就是把MediaPlayerService这个Binder实体的引用写到一个struct svcinfo结构体中，主要是它的名称和句柄值，然后插入到链接svclist的头部去。这样，Client来向Service Manager查询服务接口时，只要给定服务名称，Service ...

Android系统进程间通信（IPC）机制Binder中的Server启动过程源代码分析(3)

Service Manager被唤醒之后，就进入while循环开始处理事务了。这里wait_for_proc_work等于1，并且proc->todo不为空，所以从proc->todo列表中得到第一个工作项： w = list_first_e...

Android系统进程间通信（IPC）机制Binder中的Client获得Server远程接口过程源代码分析(2)

注意，这里的参数reply = 0，表示这是一个BC_TRANSACTION命令。前面我们提到，传给驱动程序的handle值为0，即这里的tr->target.handle = 0，表示请求的目标Binde...

Android系统进程间通信（IPC）机制Binder中的Server启动过程源代码分析(2)

这个函数虽然很长，但是主要调用了talkWithDriver函数来与Binder驱动程序进行交互： status_t IPCThreadState::talkWithDriver(bool doReceive) { ...

Android系统进程间通信Binder机制在应用程序框架层的Java接口源代码分析

在前面几篇文章中，我们详细介绍了Android系统进程间通信机制Binder的原理，并且深入分析了系统提供的Binder运行库和驱动程序的源代码。细心的读者会发现，这几篇文章分析的Binder接口都是基于C/C++语言来实现的，但是我们在编写应用程序都是基于Java语言的，那么，我们如何使用Java...

Android系统进程间通信（IPC）机制Binder中的Server启动过程源代码分析(1)

在前面一篇文章浅谈Android系统进程间通信（IPC）机制Binder中的Server和Client获得Service Manager接口之路中，介绍了在Android系统中Binder进程间通信机制中的Server角色是如何获得Service Manager远程接口的，即defaul...

Android系统进程间通信（IPC）机制Binder中的Client获得Server远程接口过程源代码分析(3)

注意，这里的status参数为0。从这里可以看出，binder_send_reply告诉Binder驱动程序执行BC_FREE_BUFFER和BC_REPLY命令，前者释放之前在binder_transaction分配的空间，地址为buffer_to_free，buffer_to_fr...

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