Android系统ashmem 的相关内容

Android系统的Ashmem匿名共享内存子系统分析（3）- Ashmem子系统的 C/C++访问接口

在C/C++代码中，可以使用以下函数来操作Ashmem共享内存： int ashmem_create_region(const char *name, size_t size) 该函数用于创建一个匿名共享内存区域，并返回一个文件描述符。参数name表示该共享内存区域的名称，size表示共享内存区域的...

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[帮助文档] 如何在Android系统中集成企业版或旗舰版SOC

SOC是一个端到端的服务，为RTOS、Linux、Android操作系统的物联网终端提供安全审计。本文介绍了如何在Android系统中集成企业版或旗舰版SOC。

[帮助文档] 如何为Android系统使用配网SDK

本章节提供了把WiFi设备配置上家庭路由器以及局域网内已联网设备的发现能力，具体方案包括一键广播配网（P2P）、手机热点配网、蓝牙辅助配网、智能路由器配网以及设备间相互配网等。

[帮助文档] 如何解决在Android系统中启动某个应用时同时启动其他应用

问题描述在Android系统中使用某个应用时，弹出“是否允许启动其他应用”的提示框，并可以在应用详情的应用行为记录中看到启动记录。例如在小米的MIUI 12系统中，启动了某应用，会同时启动其他的应用，如下图所示：应用行为记录问题原因第三方SDK同时启动其他应用。比如A应用集成了SDK1，B应用也集成...

Android系统匿名共享内存Ashmem（Anonymous Shared Memory）在进程间共享的原理分析

在前面一篇文章Android系统匿名共享内存Ashmem（Anonymous Shared Memory）驱动程序源代码分析中，我们系统地介绍了Android系统匿名共享内存的实现原理，其中着重介绍了它是如何辅助内存管理系统来有效地管理内存的，在再前面一篇文章Android系统匿名共享内...

Android系统匿名共享内存Ashmem（Anonymous Shared Memory）简要介绍和学习计划

在Android系统中，提供了独特的匿名共享内存子系统Ashmem（Anonymous Shared Memory），它以驱动程序的形式实现在内核空间中。它有两个特点，一是能够辅助内存管理系统来有效地管理不再使用的内存块，二是它通过Binder进程间通信机制来实现进程间的内存共享。本文中，我们将通过...

Android系统匿名共享内存Ashmem（Anonymous Shared Memory）驱动程序源代码分析（下)

四. 匿名共享内存的锁定和解锁操作前面提到，Android系统的运行时库提到了执行匿名共享内存的锁定和解锁操作的两个函数ashmem_pin_region和ashmem_unpin_region，它们实现在sy...

Android系统匿名共享内存Ashmem（Anonymous Shared Memory）驱动程序源代码分析（上)

在上一文章Android系统匿名共享内存Ashmem（Anonymous Shared Memory）简要介绍和学习计划中，我们简要介绍了Android系统的匿名共享内存机制，其中，简要提到了它具有辅助内存管理系统来有效地管理内存的特点，但是没有进一步去了解它是如何实现的。在本文中，我们将通过分析A...

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