I have a check similar to this:
When I'm debugging in AIX (using dbx), if I attempt to print the value of 'ptr' it says "ptr is not defined" - however, it still enters that if block. So, I'm getting segfaults on the delete statement. Can anyone suggest why the if() block is entered?
Hi ctote,
if a ptr is NOT NULL, then it is true, (for ex. containing a junk values, aka bad pointer). if you did not define your ptr to NULL when you declare/free them, you should be careful about re-using them. Try to print the 'ptr' before entering the 'if block' and after you exiting the 'if block' and see if there is any difference.
Hi,
I have a list of directories which contain old files that are to be deleted.
I put the list of all directories in a txt file and it is being read by a script
Iam searching for the files older than 60 days using mtime and then deleting it
But all the files are getting deleted... (3 Replies)
Hi
Having a lil trouble with a rather simple application I'm writing. It so happens that I have to copy some data using memcpy() and so far I've been doing just fine compiling it with VC.Net and running it on Windows XP. Now I'm trying to port the thing to Solaris (which shouldn't really be too... (3 Replies)
Can someone suggest on this script :
let's say the logs files are available for Jan 07, Dec 06, Nov 06, Oct 06
the script should identify the latest months logs, i.e Jan 07
it should then delete anything older than 2 months, which will be logs for Nov 06 & Oct 06. (40 Replies)
I have created a address book file. Insertion of Record (using >> symbol)and searching of record (using grep command) into the address book is also working correctly. Now I want to delete a record into a file. Any body can help me in this case without using sed and awk18 18.
Thanks and best... (24 Replies)
Discussion started by: murtaza
24 Replies
6. Forum Support Area for Unregistered Users & Account Problems
If one wants to get a start address of a array or a string or a block of memory via a function, there are at least two methods to achieve it:
(1) one is to pass a pointer-to-pointer parameter, like:
int my_malloc(int size, char **pmem)
{
*pmem=(char *)malloc(size);
if(*pmem==NULL)... (11 Replies)
How to delete a particular character in a file and then removing the spaces created by that removal.I am working with a text file containing nucleotide sequences.
I have tried sed command but it replaces N with spaces.
example:I want to delete all the N without creating a space after its ... (1 Reply)
Hi,
I have file with footer (5records) at end of the file. I want to delete the footer as well as the empty records between the main records and footer record.(The gap between main records and Footer records is dynamic)
Example:
MainRecord1 "115494",","FAELD","CT","... (12 Replies)
How can i delete the contents of the directory except one file? (8 Replies)
Discussion started by: proactiveaditya
8 Replies
LEARN ABOUT NETBSD
atomic_dec_uint
ATOMIC_DEC(3) BSD Library Functions Manual ATOMIC_DEC(3)NAME
atomic_dec, atomic_dec_32, atomic_dec_uint, atomic_dec_ulong, atomic_dec_ptr, atomic_dec_64, atomic_dec_32_nv, atomic_dec_uint_nv,
atomic_dec_ulong_nv, atomic_dec_ptr_nv, atomic_dec_64_nv -- atomic decrement operations
SYNOPSIS
#include <sys/atomic.h>
void
atomic_dec_32(volatile uint32_t *ptr);
void
atomic_dec_uint(volatile unsigned int *ptr);
void
atomic_dec_ulong(volatile unsigned long *ptr);
void
atomic_dec_ptr(volatile void *ptr);
void
atomic_dec_64(volatile uint64_t *ptr);
uint32_t
atomic_dec_32_nv(volatile uint32_t *ptr);
unsigned int
atomic_dec_uint_nv(volatile unsigned int *ptr);
unsigned long
atomic_dec_ulong_nv(volatile unsigned long *ptr);
void *
atomic_dec_ptr_nv(volatile void *ptr);
uint64_t
atomic_dec_64_nv(volatile uint64_t *ptr);
DESCRIPTION
The atomic_dec family of functions decrement (by one) the variable referenced by ptr in an atomic fashion.
The *_nv() variants of these functions return the new value.
The 64-bit variants of these functions are available only on platforms that can support atomic 64-bit memory access. Applications can check
for the availability of 64-bit atomic memory operations by testing if the pre-processor macro __HAVE_ATOMIC64_OPS is defined.
SEE ALSO atomic_ops(3)HISTORY
The atomic_dec functions first appeared in NetBSD 5.0.
BSD April 11, 2007 BSD