Get the current status of the current thread in the process associated with the file descriptor.

#include <sys/procfs.h>

#define DCMD_PROC_STATUS   __DIOF(_DCMD_PROC, __PROC_SUBCMD_PROCFS + 7, procfs_status)

The arguments to devctl() are:

Argument Value
filedes A file descriptor for the process.
dev_data_ptr A pointer to a procfs_status structure
n_bytes sizeof(procfs_status)
dev_info_ptr NULL

The argument is a pointer to a procfs_status structure (see debug_thread_t in <sys/debug.h>) that's filled in with the required information on return. For example:

procfs_status my_status;

devctl( fd, DCMD_PROC_STATUS, &my_status, sizeof(my_status),
Note: If the current thread no longer exists, the process manager returns information about the one with the next higher thread ID. If there are no threads with a higher ID, devctl() returns ESRCH.

For more information about the contents of this structure, see "Thread information," earlier in this chapter.