gcc/ada/s-inmaop.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS               --
   4 --                                                                          --
   5 --            S Y S T E M . I N T E R R U P T _ M A N A G E M E N T .       --
   6 --                             O P E R A T I O N S                          --
   7 --                                                                          --
   8 --                                  S p e c                                 --
   9 --                                                                          --
  10 --                                                                          --
  11 --          Copyright (C) 1992-1998, Free Software Foundation, Inc.         --
  12 --                                                                          --
  13 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
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  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
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  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
  31 -- GNARL was developed by the GNARL team at Florida State University. It is --
  32 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
  33 -- State University (http://www.gnat.com).                                  --
  34 --                                                                          --
  35 ------------------------------------------------------------------------------
  36
  37 package System.Interrupt_Management.Operations is
  38
  39    procedure Thread_Block_Interrupt (Interrupt : Interrupt_ID);
  40    --  Mask the calling thread for the interrupt
  41    pragma Inline (Thread_Block_Interrupt);
  42
  43    procedure Thread_Unblock_Interrupt (Interrupt : Interrupt_ID);
  44    --  Unmask the calling thread for the interrupt
  45    pragma Inline (Thread_Unblock_Interrupt);
  46
  47    procedure Set_Interrupt_Mask (Mask : access Interrupt_Mask);
  48    --  Set the interrupt mask of the calling thread
  49    procedure Set_Interrupt_Mask
  50      (Mask  : access Interrupt_Mask;
  51       OMask : access Interrupt_Mask);
  52    --  Set the interrupt mask of the calling thread while returning the
  53    --  previous Mask.
  54    pragma Inline (Set_Interrupt_Mask);
  55
  56    procedure Get_Interrupt_Mask (Mask : access Interrupt_Mask);
  57    --  Get the interrupt mask of the calling thread
  58    pragma Inline (Get_Interrupt_Mask);
  59
  60    function Interrupt_Wait (Mask : access Interrupt_Mask) return Interrupt_ID;
  61    --  Wait for the interrupts specified in Mask and return
  62    --  the interrupt received. Upon error it return 0.
  63    pragma Inline (Interrupt_Wait);
  64
  65    procedure Install_Default_Action (Interrupt : Interrupt_ID);
  66    --  Set the sigaction of the Interrupt to default (SIG_DFL).
  67    pragma Inline (Install_Default_Action);
  68
  69    procedure Install_Ignore_Action (Interrupt : Interrupt_ID);
  70    --  Set the sigaction of the Interrupt to ignore (SIG_IGN).
  71    pragma Inline (Install_Ignore_Action);
  72
  73    procedure Fill_Interrupt_Mask (Mask : access Interrupt_Mask);
  74    --  Get a Interrupt_Mask with all the interrupt masked
  75    pragma Inline (Fill_Interrupt_Mask);
  76
  77    procedure Empty_Interrupt_Mask (Mask : access Interrupt_Mask);
  78    --  Get a Interrupt_Mask with all the interrupt unmasked
  79    pragma Inline (Empty_Interrupt_Mask);
  80
  81    procedure Add_To_Interrupt_Mask
  82      (Mask      : access Interrupt_Mask;
  83       Interrupt : Interrupt_ID);
  84    --  Mask the given interrupt in the Interrupt_Mask
  85    pragma Inline (Add_To_Interrupt_Mask);
  86
  87    procedure Delete_From_Interrupt_Mask
  88      (Mask      : access Interrupt_Mask;
  89       Interrupt : Interrupt_ID);
  90    --  Unmask the given interrupt in the Interrupt_Mask
  91    pragma Inline (Delete_From_Interrupt_Mask);
  92
  93    function Is_Member
  94      (Mask      : access Interrupt_Mask;
  95       Interrupt : Interrupt_ID) return Boolean;
  96    --  See if a given interrupt is masked in the Interrupt_Mask
  97    pragma Inline (Is_Member);
  98
  99    procedure Copy_Interrupt_Mask (X : out Interrupt_Mask; Y : Interrupt_Mask);
 100    --  Assigment needed for limited private type Interrupt_Mask.
 101    pragma Inline (Copy_Interrupt_Mask);
 102
 103    procedure Interrupt_Self_Process (Interrupt : Interrupt_ID);
 104    --  raise an Interrupt process-level
 105    pragma Inline (Interrupt_Self_Process);
 106
 107    --  The following objects serve as constants, but are initialized
 108    --  in the body to aid portability.  These actually belong to the
 109    --  System.Interrupt_Management but since Interrupt_Mask is a
 110    --  private type we can not have them declared there.
 111
 112    Environment_Mask : aliased Interrupt_Mask;
 113    --  This mask represents the mask of Environment task when this package
 114    --  is being elaborated, except the signals being
 115    --  forced to be unmasked by RTS (items in Keep_Unmasked)
 116
 117    All_Tasks_Mask : aliased Interrupt_Mask;
 118    --  This is the mask of all tasks created in RTS. Only one task in RTS
 119    --  is responsible for masking/unmasking signals (see s-interr.adb).
 120
 121 end System.Interrupt_Management.Operations;