/// <summary>
/// Gets the thread information for the given thread
/// </summary>
/// <param name="thread">The ID of the thread to query for information</param>
/// <returns>
/// Returns a valid proc_threadinfo struct for valid threads that the caller
/// has permissions to access; otherwise, returns null
/// </returns>
internal static unsafe proc_threadinfo?GetThreadInfoById(int pid, ulong thread)
{
// Negative PIDs are invalid
if (pid < 0)
{
throw new ArgumentOutOfRangeException(nameof(pid));
}
// Negative TIDs are invalid
if (thread < 0)
{
throw new ArgumentOutOfRangeException(nameof(thread));
}
// Get the thread information for the specified thread in the specified process
int size = sizeof(proc_threadinfo);
proc_threadinfo info = default(proc_threadinfo);
int result = proc_pidinfo(pid, PROC_PIDTHREADINFO, (ulong)thread, &info, size);
return(result == size ? new proc_threadinfo?(info) : null);
}
private static unsafe extern int proc_pidinfo(
int pid,
int flavor,
ulong arg,
proc_threadinfo* buffer,
int bufferSize);
