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Diffstat (limited to 'gcc/ada/s-taspri-linux.ads')
| -rw-r--r-- | gcc/ada/s-taspri-linux.ads | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/gcc/ada/s-taspri-linux.ads b/gcc/ada/s-taspri-linux.ads deleted file mode 100644 index cb426e15542..00000000000 --- a/gcc/ada/s-taspri-linux.ads +++ /dev/null @@ -1,118 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS -- --- -- --- S Y S T E M . T A S K _ P R I M I T I V E S -- --- -- --- S p e c -- --- -- --- Copyright (C) 1991-2005 Free Software Foundation, Inc. -- --- -- --- GNARL is free software; you can redistribute it and/or modify it under -- --- terms of the GNU General Public License as published by the Free Soft- -- --- ware Foundation; either version 2, or (at your option) any later ver- -- --- sion. GNARL is distributed in the hope that it will be useful, but WITH- -- --- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- --- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- --- for more details. You should have received a copy of the GNU General -- --- Public License distributed with GNARL; see file COPYING. If not, write -- --- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- --- Boston, MA 02110-1301, USA. -- --- -- --- As a special exception, if other files instantiate generics from this -- --- unit, or you link this unit with other files to produce an executable, -- --- this unit does not by itself cause the resulting executable to be -- --- covered by the GNU General Public License. This exception does not -- --- however invalidate any other reasons why the executable file might be -- --- covered by the GNU Public License. -- --- -- --- GNARL was developed by the GNARL team at Florida State University. -- --- Extensive contributions were provided by Ada Core Technologies, Inc. -- --- -- ------------------------------------------------------------------------------- - --- This is the GNU/Linux (GNU/LinuxThreads) version of this package - --- This package provides low-level support for most tasking features - -pragma Polling (Off); --- Turn off polling, we do not want ATC polling to take place during --- tasking operations. It causes infinite loops and other problems. - -with System.OS_Interface; --- used for pthread_mutex_t --- pthread_cond_t --- pthread_t - -package System.Task_Primitives is - - type Lock is limited private; - -- Should be used for implementation of protected objects - - type RTS_Lock is limited private; - -- Should be used inside the runtime system. The difference between Lock - -- and the RTS_Lock is that the later one serves only as a semaphore so - -- that do not check for ceiling violations. - - type Suspension_Object is limited private; - -- Should be used for the implementation of Ada.Synchronous_Task_Control - - type Task_Body_Access is access procedure; - -- Pointer to the task body's entry point (or possibly a wrapper - -- declared local to the GNARL). - - type Private_Data is limited private; - -- Any information that the GNULLI needs maintained on a per-task basis. - -- A component of this type is guaranteed to be included in the - -- Ada_Task_Control_Block. - -private - - type Prio_Array_Type is array (System.Any_Priority) of Integer; - - type Lock is record - L : aliased System.OS_Interface.pthread_mutex_t; - Ceiling : System.Any_Priority := System.Any_Priority'First; - Saved_Priority : System.Any_Priority := System.Any_Priority'First; - end record; - - type RTS_Lock is new System.OS_Interface.pthread_mutex_t; - - type Suspension_Object is record - State : Boolean; - pragma Atomic (State); - -- Boolean that indicates whether the object is open. This field is - -- marked Atomic to ensure that we can read its value without locking - -- the access to the Suspension_Object. - - Waiting : Boolean; - -- Flag showing if there is a task already suspended on this object - - L : aliased System.OS_Interface.pthread_mutex_t; - -- Protection for ensuring mutual exclusion on the Suspension_Object - - CV : aliased System.OS_Interface.pthread_cond_t; - -- Condition variable used to queue threads until the condition is - -- signaled. - end record; - - type Private_Data is record - Thread : aliased System.OS_Interface.pthread_t; - pragma Atomic (Thread); - -- Thread field may be updated by two different threads of control. - -- (See, Enter_Task and Create_Task in s-taprop.adb). - -- They put the same value (thr_self value). We do not want to - -- use lock on those operations and the only thing we have to - -- make sure is that they are updated in atomic fashion. - - CV : aliased System.OS_Interface.pthread_cond_t; - - L : aliased RTS_Lock; - -- Protection for all components is lock L - - Active_Priority : System.Any_Priority := System.Any_Priority'First; - -- Simulated active priority, used only if Priority_Ceiling_Support - -- is True. - end record; - -end System.Task_Primitives; |