mmap

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Memory Mapping a file in POSIX

When memory mapping files in a POSIX system, do we need to keep the file-descriptor open till we\'re done with the mmaped memory block (and close it after we munmap) or can (should?) we close the file[详细]

2023-01-24 18:06 分类：问答
Sharing memory-mapped files between 32 bit and 64 bit processes

My requirement is to provide a shared memory file between 32 bit and 64 bit processes. This file can be created by any of the process depends upon who comes first.[详细]

2023-01-24 03:55 分类：问答
Is there a memory mapping api on windows platform, just like mmap() on linux?

Is there an api to do memory mapping, just l开发者_运维技巧ike mmap() on linux?Depends on what exactly you want to use it for. If you want to map existing files into memory, that\'s supported with[详细]

2023-01-23 12:44 分类：问答
Can the unix api -mmap() work correctly on iphone os?

I need to know the feasibility of \"mmaping\" a virtualmemory and loading binary code into it and execute the binary code. The binary code (presented as shared library) may be mach format or elf forma[详细]

2023-01-23 04:54 分类：问答
implement mmap with multiple pages in device driver

I have a device driver that uses buffers in RAM that I want the user to be able to map to user space. I have read http://lwn.net/images/pdf/LDD3/ch15.pdf which talks about using nopages, but the examp[详细]

2023-01-19 00:07 分类：问答
Linux Memory mapped files reserve lots of physical memory

I have a problem that was described in multiple threads concerning memory mapping and a growing memory consumption under Linux.[详细]

2023-01-18 00:05 分类：问答
Memory Mapped files and atomic writes of single blocks

If I read and write a single file using normal IO APIs, writes are guaranteed to be atomic on a per-block basis. That is, if my write only modifies a single block, the operating system guarantees that[详细]

2023-01-17 11:44 分类：问答
How can I proxy mmap reads and writes across a network?

I\'m working on software to control a mmap\'d device on an embedded ARM system, but have run into a few situations where the debugging and development tools available haven\'t been sufficient. i.e. In[详细]

2023-01-17 09:40 分类：问答
Partial unmap of Win32 memory-mapped file

I have some code (which I cannot change) that I need to get working in a native Win32 environment.This code calls mmap() and munmap(), so I have created those functions using CreateFileMapping(), MapV[详细]

2023-01-15 19:29 分类：问答
GDB can't access mmap()'d kernel allocated memory?

I\'m running into an issue with GDB and some buffers allocated in kernel space.The buffers are allocated by a kernel module that is supposed to allocate contiguous blocks of memory, and then memory ma[详细]

2023-01-14 23:45 分类：问答