he array values that we are modifying and the function that we call
periodically are from our module . to exemplify i have put the
code below .our requirement is that we want to delete the expired
contacts without relying on usrloc module as "we have not used any
DB for contact storage" but developed our own module for storing
them in a file.even we had installed the SIGALRM handler in our
module for decrementing the contacts but the values of array (that
stores the expires) elements were zero. we thought of workaround to
store the expires values to file and decrement them periodically.
but frequent I/O is very consuming. whats the solution for deleting
the expired contacts .
#define DB_PATH "/usr/local/etc/kamailio/dbtext/syntel"
#define DB_PATH1 "/usr/local/etc/kamailio/dbtext/temp"
#define MAX_BUFFER 128
#define MAX_USERS 128
typedef struct
{
int max_bindings;
int syntel_index;
int expires[8];
char ip_addr[8][16];
} Syntel_users;
Syntel_users syntel_database[16]={{0}};
//this is function used for storing the contacts
int
write_to_file (char *uri, char *user, int locator,int expires)
{
int Retval = 0;
int fd;
int bytes;
char ip[13];
strncpy (ip, &uri[9], 12);
ip[12] = '\0';
fd = open (DB_PATH, O_CREAT | O_RDWR | O_APPEND, 0777);
if (syntel_database[locator].max_bindings < 8)
{
strcpy
(syntel_database[locator].ip_addr[syntel_database[locator].max_bindings],
uri);
syntel_database[locator].expires[syntel_database[locator].max_bindings]=expires;
syntel_database[locator].max_bindings++;
bytes = write (fd, uri, strlen (uri));
Retval = 1;
}
return Retval;
}
//AND THIS IS FUNCTION WE CALL FROM kamailio.conf WITH RTIMER MODULE
AFTER INTERVAL OF 1 SECOND.
int syntel_delete (void)
{
int counter;
int j;
for (counter = 0; counter < 16; counter++)
{
for (j = 0; j < syntel_database[counter].max_bindings; j++)
{
if(syntel_database[counter].expires[j]<=0)
{
memset(syntel_database[counter].ip_addr[j],0,strlen(syntel_database[counter].ip_addr[j]));
syntel_database[counter].max_bindings--;
}
else
syntel_database[counter].expires[j]--;
}
}
return 0;
}
BUT WHAT THIS FUNCTION GETS IS ZERO VALUES FOR EXPIRES AND NOT
MODIFIED IN SYNTEL_WRITE_TO_FILE
HOW TO DECREMENT THESE VALUES PERIODICALLY THEN ??
------------------------------------------------------------------------
Subject:
Re: [SR-Users] Deleting the expired contacts using the Rtimer module
From:
kiran bhosale <kbhos...@synteltelecom.com>
Date:
Thu, 07 Feb 2013 10:30:39 +0530
To:
mico...@gmail.com
To:
mico...@gmail.com
Daniel-Constantin Mierla wrote:
Hello,
the static array is stored on the private memory per process, thus
cannot be updated by the timer.
You should allocate the array in shared memory at startup, then it
should work to update it from different application processes. Be
sure you synchronize (with locks/mutexes) the operations over the
shared memory.
Cheers,
Daniel
On 2/6/13 7:53 AM, kiran bhosale wrote:
Hi
we have developed the custom module which stores the registered
users in a file.now we are trying to remove the expired contacts
using the rtimer module.while saving the registered users to the
file we also store the expires values in static array.but when
we try to decrement the these values in a function called with
the help of rtimer module. the values used by this periodic
function are not modified ones but the initial which are zero. is it
that we cant pass the modified values of the global variables to
the timed functions. to get around this problem, we also
registered the timer in our module but got same results !!!!!!!
Please Help.
Thanks and regards .
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users@lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
the array values that we are modifying and the function that we
call periodically are from our module . to exemplify i have put
the code below .our requirement is that we want to delete the expired
contacts without relying on usrloc module as "we have not used any
DB for contact storage" but developed our own module for storing
them in a file.even we had installed the SIGALRM handler in our
module for decrementing the contacts but the values of array (that
stores the expires) elements were zero. we thought of workaround to
store the expires values to file and decrement them periodically.
but frequent I/O is very consuming. whats the solution for deleting
the expired contacts .
#define DB_PATH "/usr/local/etc/kamailio/dbtext/syntel"
#define DB_PATH1 "/usr/local/etc/kamailio/dbtext/temp"
#define MAX_BUFFER 128
#define MAX_USERS 128
typedef struct
{
int max_bindings;
int syntel_index;
int expires[8];
char ip_addr[8][16];
} Syntel_users;
Syntel_users syntel_database[16]={{0}};
//this is function used for storing the contacts
int
write_to_file (char *uri, char *user, int locator,int expires)
{
int Retval = 0;
int fd;
int bytes;
char ip[13];
strncpy (ip, &uri[9], 12);
ip[12] = '\0';
fd = open (DB_PATH, O_CREAT | O_RDWR | O_APPEND, 0777);
if (syntel_database[locator].max_bindings < 8)
{
strcpy
(syntel_database[locator].ip_addr[syntel_database[locator].max_bindings],
uri);
syntel_database[locator].expires[syntel_database[locator].max_bindings]=expires;
syntel_database[locator].max_bindings++;
bytes = write (fd, uri, strlen (uri));
Retval = 1;
}
return Retval;
}
//AND THIS IS FUNCTION WE CALL FROM kamailio.conf WITH RTIMER MODULE
AFTER INTERVAL OF 1 SECOND.
int syntel_delete (void)
{
int counter;
int j;
for (counter = 0; counter < 16; counter++)
{
for (j = 0; j < syntel_database[counter].max_bindings; j++)
{
if(syntel_database[counter].expires[j]<=0)
{
memset(syntel_database[counter].ip_addr[j],0,strlen(syntel_database[counter].ip_addr[j]));
syntel_database[counter].max_bindings--;
}
else
syntel_database[counter].expires[j]--;
}
}
return 0;
}
BUT WHAT THIS FUNCTION GETS IS ZERO VALUES FOR EXPIRES AND NOT
MODIFIED IN SYNTEL_WRITE_TO_FILE
HOW TO DECREMENT THESE VALUES PERIODICALLY THEN ??
------------------------------------------------------------------------
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users@lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
