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10 More Discussions You Might Find Interesting
1. Filesystems, Disks and Memory
Hello. I'm writing some random access i/o software on Solaris 8 using mmap64 to memory map large files (my test file is ~25 GB).
The abbreviated code fragment is:
fd = open(cbuf,O_RDONLY|O_LARGEFILE);
struct stat statbuf;
fstat(fd,&statbuf);
off_t len =... (0 Replies)
Discussion started by: gusm
0 Replies
2. HP-UX
We recently have been seeing the following type of error on our development server. Being somewhat new to HP-UX I was hoping to get some insight. Here is what I have found.
I have been doing some research.
/usr/lib/dld.sl: Call to mmap() failed - TEXT /u07/mdev/lib/libCLEND.sl... (2 Replies)
Discussion started by: scotbuff
2 Replies
3. UNIX for Advanced & Expert Users
I'm using select() to monitor multiple file descriptors (inet sockets) in application. But this application must also collaborate with other applications on the same host via shared memory (mmap'ed file) due to performance reasons. How can I become notification that mmaped memory is changed or... (1 Reply)
Discussion started by: Hitori
1 Replies
4. Solaris
Dear Experts,
i have a problem related to mmap(), when i run my program on sun for 64 bit which is throwing SIGBUS when it encounters mmap() function, what is the reason how to resolve this one, because it is working for 32 bit.
with regards,
vidya. (2 Replies)
Discussion started by: vin_pll
2 Replies
5. UNIX for Dummies Questions & Answers
how to use mmap() to map a file to memory space. Do you have any simple program???? Because I have to implement lot of concepts into it. (3 Replies)
Discussion started by: gokult
3 Replies
6. Programming
how to use mmap() to map a file to memory space. Do you have any simple program???? Because I have to implement lot of concepts into it. (5 Replies)
Discussion started by: gokult
5 Replies
7. Homework & Coursework Questions
Descriptions:
Develop a program that uses mmap() to map a file to memory space. Prepare such a file by yourself and do the follows.
<LI class=MsoNormal>Display the content of the file after mapping; <LI class=MsoNormal>Output how many digits included in the file; <LI class=MsoNormal>Replace... (1 Reply)
Discussion started by: gokult
1 Replies
8. Programming
hai,
How do we map 'n' number of files into memory by using mmap system call??
Thanks in advance...... (5 Replies)
Discussion started by: andrew.paul
5 Replies
9. UNIX for Advanced & Expert Users
Hi
I want to lock or prevent a portion of memory which I allocated. So I tried MLOCK, MPROTECT and some like this. But all these functions works only on page border. Can I know why that so.
Is that possible to protect a portion of memory which is in middle of the page.
Example.
int A;
... (1 Reply)
Discussion started by: jionnet
1 Replies
10. Emergency UNIX and Linux Support
I want to know whether this is possile or ever been tried out.
I want to obtain a chuck of memory using mmap()
I do it so :
n = mmap(0, 8000, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
And hold on to that memory, when a process requests for memory, some memory is... (2 Replies)
Discussion started by: xerox
2 Replies
LEARN ABOUT OSX
libmapmalloc
libmapmalloc(3LIB) Interface Libraries libmapmalloc(3LIB) NAME
libmapmalloc - alternative memory allocator library SYNOPSIS
cc [ flag... ] file... -lmapmalloc [ library... ] #include <stdlib.h> DESCRIPTION
Functions in this library provide malloc routines that use mmap(2) instead of sbrk(2) for acquiring heap space. INTERFACES
The shared object libmapmalloc.so.1 provides the public interfaces defined below. See intro(3) for additional information on shared object interfaces. calloc cfree free mallinfo malloc mallopt memalign realloc valloc FILES
/usr/lib/libmapmalloc.so.1 shared object /usr/lib/64/libmapmalloc.so.1 64-bit shared object ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsl (32-bit) | +-----------------------------+-----------------------------+ | |SUNWcslx (64-bit) | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
pvs(1), mmap(2), sbrk(2), intro(3), malloc(3C), malloc(3MALLOC), mapmalloc(3MALLOC), attributes(5) SunOS 5.10 22 May 2003 libmapmalloc(3LIB)