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Diffstat (limited to 'gcc/ada/s-taprop.ads')
| -rw-r--r-- | gcc/ada/s-taprop.ads | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/ada/s-taprop.ads b/gcc/ada/s-taprop.ads index e3c80baf71b..79c55c024de 100644 --- a/gcc/ada/s-taprop.ads +++ b/gcc/ada/s-taprop.ads @@ -444,6 +444,38 @@ package System.Task_Primitives.Operations is -- The call to Stack_Guard has no effect if guard pages are not used on -- the target, or if guard pages are automatically provided by the system. + ------------------------ + -- Suspension objects -- + ------------------------ + + -- These subprograms provide the functionality required for synchronizing + -- on a suspension object. Tasks can suspend execution and relinquish the + -- processors until the condition is signaled. + + function Current_State (S : Suspension_Object) return Boolean; + -- Return the state of the suspension object + + procedure Set_False (S : in out Suspension_Object); + -- Set the state of the suspension object to False + + procedure Set_True (S : in out Suspension_Object); + -- Set the state of the suspension object to True. If a task were + -- suspended on the protected object then this task is released (and + -- the state of the suspension object remains set to False). + + procedure Suspend_Until_True (S : in out Suspension_Object); + -- If the state of the suspension object is True then the calling task + -- continues its execution, and the state is set to False. If the state + -- of the object is False then the task is suspended on the suspension + -- object until a Set_True operation is executed. Program_Error is raised + -- if another task is already waiting on that suspension object. + + procedure Initialize (S : in out Suspension_Object); + -- Initialize the suspension object + + procedure Finalize (S : in out Suspension_Object); + -- Finalize the suspension object + ----------------------------------------- -- Runtime System Debugging Interfaces -- ----------------------------------------- |
