This code works correctly on 3 different platforms. I think your co-worker is mis-informed somehow. The problem with this is that it is run-time only, not compile-time like sizeof().
I would like to create a script for calculating size and remaining space of a directory automatically every 24 hours, then send an email to report to the admin.
* POSIX and PERL are preferred.
Can anyone help, please? (1 Reply)
hello everybody!
I want to create a file with permissions for read, write, and execute to everybody using C, so I write this code:
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main(){
int fileDescriptor;
fileDescriptor =... (2 Replies)
hello dont know if this is the correct forum for this post but i have a question.
i am revising for a exam on operating systems and i have the question...
A system has a 32bit virtual address divided into 2kbyte pages and each entry in the page table is 6 bytes in length.
what is the size... (0 Replies)
Hi All,
I am very new to shell scripting. I have a text file which is the output of another utility. This text file has a list of SAF files which is basically a list of orphan attachments in the attachments directory. Now I want to read each file name from the file, get its size and repeat this... (6 Replies)
Hi,
from the manual
listen(2): listen for connections on socket - Linux man page
It has a parameter called backlog and it limits the maximum length of queue of pending list.
If I set backlog to 128, is it means no more than 128 packets can be handled by server?
If I have three... (3 Replies)
Hi
This is the lspv output of my server :
cbspsdb01 #lspv
hdisk0 00c7518d2d512fd4 cdgvg active
hdisk1 00c7518d2dcbc9d6 cdgvg active
hdisk2 00c7518dcda9199a appvg active
hdisk3... (1 Reply)
Hey guys.....
I have many files (lets say 100 or more) of same size, and I want to create a new output file and calculate the average of first row fifth column in all files and print it in first row of output file, then 2nd row fifth col in all 100 files and print it in 2nd row of output... (1 Reply)
hi everyone
i have a backup share mounted with me on solaris 10 which have daily backups. everyday i need to calculate all individual sizes of files and need to report somewhere. e.g i have .rman 7backup files daily . what i need that is there any commnd or variation of du command which can add... (1 Reply)
hi everyone
i have posted this query but i dont where it has gone
i am posting again . my issue is that i have many backup files in a backup nfs share and i need to calculate it size just by adding their individual file sizes which is repetitive jobs. so is there any command or variation of du... (1 Reply)
Discussion started by: janakors
1 Replies
LEARN ABOUT BSD
falloc
MALLOC(3F)MALLOC(3F)NAME
malloc, free, falloc - memory allocator
SYNOPSIS
subroutine malloc (size, addr)
integer size, addr
subroutine free (addr)
integer addr
subroutine falloc (nelem, elsize, clean, basevec, addr, offset)
integer nelem, elsize, clean, addr, offset
DESCRIPTION
Malloc, falloc and free provide a general-purpose memory allocation package. Malloc returns in addr the address of a block of at least
size bytes beginning on an even-byte boundary.
Falloc allocates space for an array of nelem elements of size elsize and returns the address of the block in addr. It zeros the block if
clean is 1. It returns in offset an index such that the storage may be addressed as basevec(offset+1) ... basevec(offset+nelem). Falloc
gets extra bytes so that after address arithmetic, all the objects so addressed are within the block.
The argument to free is the address of a block previously allocated by malloc or falloc; this space is made available for further alloca-
tion, but its contents are left undisturbed. To free blocks allocated by falloc, use addr in calls to free, do not use basevec(offset+1).
Needless to say, grave disorder will result if the space assigned by mallocorfalloc is overrun or if some random number is handed to free.
DIAGNOSTICS
Malloc and falloc set addr to 0 if there is no available memory or if the arena has been detectably corrupted by storing outside the bounds
of a block.
The following example shows how to obtain memory and use it within a subprogram:
integer addr, work(1), offset
...
call falloc ( n, 4, 0, work, addr, offset )
do 10 i = 1, n
work(offset+i) = ...
10 continue
The next example reads in dimension information, allocates space for two arrays and two vectors, and calls subroutine doit to do the compu-
tations:
integer addr, dummy(1), offs
read *, k, l, m
indm1 = 1
indm2 = indm1 + k*l
indm3 = indm2 + l*m
indsym = indm3 + k*m
lsym = n*(n+1)/2
indv = indsym + lsym
indtot = indv + m
call falloc ( indtot, 4, 0, dummy, addr, offs )
call doit( dummy(indm1+offs), dummy(indm2+offs),
. dummy(indm3+offs), dummy(indsym+offs),
. dummy(indv +offs), m, n, lsym )
end
subroutine doit( arr1, arr2, arr3, vsym, vec, m, n, lsym )
real arr1(k,l), arr2(l,m), arr3(k,m), vsym(lsym), v2(m)
...
FILES
/usr/lib/libU77.a
SEE ALSO malloc(3)4.3 Berkeley Distribution May 15, 1985 MALLOC(3F)