Function dr_client_main 

pub unsafe extern "C" fn dr_client_main(
    id: client_id_t,
    argc: c_int,
    argv: *mut *const c_char,
)

When registering a process, users must provide a list of paths to client libraries and their associated client-specific options. DR looks up “dr_client_main” in each client library and calls that function when the process starts. Clients can register to receive callbacks for the various events within dr_client_main(). Note that client paths and options cannot include semicolons.

\p client_id is the ID supplied at registration and is used to identify the client for dr_get_option_array(), dr_get_client_path(), and external nudges.

The arguments passed to the client are specified in \p argc and \p argv. To match standalone application conventions, \p argv[0] is set to the client library path, with the actual parameters starting at index 1.