kernel/fiasco/src/kern/thread_state.cpp

   1 INTERFACE:
   2
   3 // When changing these constants, change them also in shared/shortcut.h!
   4 enum Thread_state
   5 {
   6   Thread_invalid          = 0,    // tcb unallocated
   7   Thread_ready            = 0x1,  // can be scheduled
   8   Thread_drq_ready        = 0x2,
   9   Thread_ready_mask       = Thread_ready | Thread_drq_ready,
  10
  11   Thread_send_wait           = 0x4,  // waiting to send a message
  12   Thread_receive_wait        = 0x8,  // waiting for a message
  13   Thread_receive_in_progress = 0x10, // receiving a message (passively)
  14
  15   Thread_ipc_mask            = Thread_send_wait | Thread_receive_wait
  16                              | Thread_receive_in_progress,
  17
  18   Thread_ipc_transfer        = 0x20,
  19
  20   // the ipc handshake bits needs to be in the first byte,
  21   // the shortcut depends on it
  22
  23   Thread_cancel               = 0x80,// state has been changed -- cancel activity
  24   Thread_timeout              = 0x100,
  25
  26   Thread_full_ipc_mask        = Thread_ipc_mask | Thread_cancel
  27                               | Thread_timeout | Thread_ipc_transfer,
  28
  29   Thread_ipc_abort_mask       = Thread_cancel | Thread_timeout | Thread_ipc_transfer,
  30
  31   Thread_dead                 = 0x200,// tcb allocated, but inactive (not in any q)
  32   Thread_suspended            = 0x400,// thread must not execute user code
  33   // 0x800, 0x1000 are free
  34   //Thread_delayed_deadline     = 0x2000, // delayed until periodic deadline
  35   //Thread_delayed_ipc          = 0x4000, // delayed until periodic ipc event
  36   Thread_fpu_owner            = 0x8000, // currently owns the fpu
  37   Thread_alien                = 0x10000, // Thread is an alien, is not allowed
  38                                      // to do system calls
  39   Thread_dis_alien            = 0x20000, // Thread is an alien, however the next
  40                                      // system call is allowed
  41   Thread_in_exception         = 0x40000, // Thread has sent an exception but still
  42                                      // got no reply
  43
  44   Thread_drq_wait             = 0x100000, // Thread polls for DRQs
  45   Thread_waiting              = 0x200000, // Thread waits for a lock
  46
  47   Thread_vcpu_enabled         = 0x400000,
  48   Thread_vcpu_fpu_disabled    = 0x1000000,
  49   Thread_ext_vcpu_enabled     = 0x2000000,
  50 };