* Must set the thread's thread info to `info`. If the thread's small ID was not already
* initialized in `sgen_client_init()` (for the main thread, usually), it must be done here.
*
* Must set the thread's thread info to `info`. If the thread's small ID was not already
* initialized in `sgen_client_init()` (for the main thread, usually), it must be done here.
*