If it's a simple value you could use send it with IPC message to the other application instance.
You could also store that data in a common database protected by a named mutex and send a IPC messages to the other instance when it's ready.
However, if you need to share a lot of complex data then you might have to create a new application that would handle all your browsers. All the instances of your current application would communicate with your browser application like this :
Code: Select all
|-------------------| |---------------------| |------------------|
| | IPC | | IPC | |
| App instance 1 | <-----> | App with Browsers | <-----> | App instance 2 |
| | | | | |
|-------------------| |---------------------| |------------------|