1.1. Overview

gflags 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. E.g., if (is_gflag("1")) { t_relay_to_udp("10.0.0.1","5060"); } else { t_relay_to_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 (unsigned int).

The module exports commands to FIFO server that can be used to change the global flags via FIFO interface. The FIFO commands are: "set_gflag", "reset_gflag" and "is_gflag".

1.2. Dependencies

The module depends on the following modules (in the other words the listed modules must be loaded before this module):

• none

1.3. Exported Parameters

modparam("gflags", "initial", "15)
		

1.4. Exported Functions

...
set_gflag("4");
...

...
reset_gflag("4");
...

...
if(is_gflag("4"))
{
    log("global flag 4 is set\n");
} else {
    log("global flag 4 is not set\n");
};
...