Copyright © 2004 FhG FOKUS
| Revision History | |
|---|---|
| Revision $Revision: 3898 $ | $Date: 2008-03-08 00:03:56 +0100 (Sat, 08 Mar 2008) $ |
Table of Contents
List of Examples
initial parameter usageset_gflag() usagereset_gflag() usageis_gflag() usageset_gflag usagereset_gflag usageis_gflag usageget_gflags usagegflags module (global flags) keeps a bitmap of flags in shared memory and may be used to change behaviour of server based on value of the flags. Example:
if (is_gflag("1")) {
t_relay("udp:10.0.0.1:5060");
} else {
t_relay("udp:10.0.0.2:5060");
}
The benefit of this module is the value of the switch flags can be manipulated by external applications such as web interface or command line tools. The size of bitmap is 32.
The module exports external commands that can be used to change the global flags via Management Interface. The MI commands are: “set_gflag”, “reset_gflag” and “is_gflag”.
The module depends on the following modules (in the other words the listed modules must be loaded before this module):
none
Set the bit at the position “flag” in global flags.
“flag” can have a value in the range of 0..31.
This function can be used from REQUEST_ROUTE, FAILURE_ROUTE, ONREPLY_ROUTE, BRANCH_ROUTE and LOCAL_ROUTE.
Reset the bit at the position “flag” in global flags.
“flag” can have a value in the range of 0..31.
This function can be used from REQUEST_ROUTE, FAILURE_ROUTE, ONREPLY_ROUTE, BRANCH_ROUTE and LOCAL_ROUTE.
Check if bit at the position “flag” in global flags is set.
“flag” can have a value in the range of 0..31.
This function can be used from REQUEST_ROUTE, FAILURE_ROUTE, ONREPLY_ROUTE, BRANCH_ROUTE and LOCAL_ROUTE.
Example 1.4. is_gflag() usage
...
if(is_gflag("4"))
{
log("global flag 4 is set\n");
} else {
log("global flag 4 is not set\n");
};
...
Functions that check or change some flags accepts one parameter which is the flag bitmap/mask specifing the corresponding flags. It is not possible to specify directly the flag position that should be changed as in the functions available in the routing script.
Set the value of some flags (specified by bitmask) to 1.
The parameter value must be a bitmask in decimal or hexadecimal format. The bitmask has a 32 bit size.
Reset the value of some flags to 0.
The parameter value must be a bitmask in decimal or hexadecimal format. The bitmask has a 32 bit size.
Returns true if the all the flags from the bitmask are set.
The parameter value must be a bitmask in decimal or hexadecimal format. The bitmask has a 32 bit size.
The function returns TRUE if all the flags from the set are set and FALSE if at least one is not set.
Example 1.7. is_gflag usage
... $ kamctl fifo set_gflag 1024 $ kamctl fifo is_gflag 1024 TRUE $ kamctl fifo is_gflag 1025 TRUE $ kamctl fifo is_gflag 1023 FALSE $ kamctl fifo set_gflag 0x10 $ kamctl fifo is_gflag 1023 TRUE $ kamctl fifo is_gflag 1007 FALSE $ kamctl fifo is_gflag 16 TRUE ...