2010-10-18 Jose Ruiz <ruiz@adacore.com>

	* exp_ch9.adb (Expand_N_Task_Type_Declaration): Add field corresponding
	to the affinity when expanding the task declaration.
	(Make_Task_Create_Call): Add the affinity parameter to the call to
	create task.
	* sem_prag.adb (Analyze_Pragma): Add the analysis for pragma CPU,
	taking into account the case when it applies to a subprogram (only for
	main and with static expression) or to a task.
	* par_prag.adb:(Prag): Make pragma CPU a valid one.
	* snames.ads-tmpl (Name_uCPU, Name_CPU): Add these new name identifiers
	used by the expander for handling the affinity parameter when creating
	a task.
	(Pragma_Id): Add Pragma_CPU as a valid one.
	* rtsfind.ads (RTU_Id): Make System_Multiprocessors accesible.
	(RE_Id, RE_Unit_Table): Make the entities RE_CPU_Range and
	RE_Unspecified_CPU visible.
	* sinfo.ads, sinfo.adb (Has_Pragma_CPU, Set_Has_Pragma_CPU): Add these
	two subprograms to set/get the flag indicating whether there is a
	pragma CPU which applies to the entity.
	* lib.ads, lib.adb (Unit_Record, Default_Main_CPU, Main_CPU,
	Set_Main_CPU): Add the field Main_CPU to Unit_Record to store the value
	of the affinity associated to the main subprogram (if any).
	Default_Main_CPU is used when no affinity is set. Subprograms
	Set_Main_CPU and Main_CPU are added to set/get the affinity of the main
	subprogram.
	* ali.ads, ali.adb (ALIs_Record): Add field Main_CPU to contain the
	value of the affinity of the main subprogram.
	(Scan_ALI): Get the affinity of the main subprogram (encoded as C=XX in
	the M line).
	* lib-writ.ads, lib-writ.adb (M_Parameters): Encode the affinity of the
	main subprogram in the M (main) line using C=XX.
	* lib-load.adb (Create_Dummy_Package_Unit, Load_Main_Source,
	Load_Unit): Add new field Main_CPU.
	* bindgen.adb (Gen_Adainit_Ada, Gen_Adainit_C): Add the code to pass
	the affinity of the main subprogram to the run time.
	* s-taskin.ads (Common_ATCB): Add the field Base_CPU to store the
	affinity.
	(Unspecified_CPU): Add this constant to identify the case when no
	affinity is set for tasks.
	* s-taskin.adb (Initialize_ATCB): Store the value coming from pragma
	CPU in the common part of the ATCB.
	(Initialize): Store the value coming from pragma CPU (for the
	environment task) in the common part of the ATCB.
	* s-tassta.ads, s-tassta.adb (Create_Task): Add the affinity specified
	by pragma CPU to the ATCB.
	* s-tarest.ads, s-tarest.adb (Create_Restricted_Task): Add the affinity
	specified by pragma CPU to the ATCB.
	* s-tporft.adb (Register_Foreign_Thread): Add the new affinity
	parameter to the call to Initialize_ATCB.
	* s-taprop-linux.adb (Create_Task): Change the attributes of the thread
	to include the task affinity before creation. Additionally, the
	affinity selected with Task_Info is also enforced changing the
	attributes at task creation time, instead of changing it after creation.
	(Initialize): Change the affinity of the environment task if required
	by a pragma CPU.
	* s-osinte-linux.ads (pthread_setaffinity_np): Instead of using a
	wrapper to check whether the function is available or not, use a weak
	symbol.
	(pthread_attr_setaffinity_np): Add the import of this function which is
	used to change the affinity in the attributes used to create a thread.
	* adaint.c (__gnat_pthread_attr_setaffinity_np): Remove this wrapper.
	It was used to check whether the pthread function was available or not,
	but the use of a weak symbol handles this situation in a cleaner way.
	* s-taprop-mingw.adb (Create_Task, Initialize): Change the affinity of
	tasks (including the environment task) if required by a pragma CPU.
	* s-taprop-solaris.adb (Enter_Task): Change the affinity of tasks
	(including the environment task) if required by a pragma CPU.
	* s-taprop-vxworks.adb (Create_Task, Initialize): Change the affinity
	of tasks (including the environment task) if required by a pragma CPU.
	* init.c (__gl_main_cpu): Make this value visible to the run time. It
	will pass the affinity of the environment task.

2010-10-18  Javier Miranda  <miranda@adacore.com>

	* einfo.adb (Direct_Primitive_Operations): Complete assertion.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@165625 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 18 insertions, 1 deletions

diff --git a/gcc/ada/s-tassta.adb b/gcc/ada/s-tassta.adb
index c10cdd82d0a..1663b89c62c 100644
--- a/gcc/ada/s-tassta.adb
+++ b/gcc/ada/s-tassta.adb
@@ -473,6 +473,7 @@ package body System.Tasking.Stages is
      (Priority          : Integer;
       Size              : System.Parameters.Size_Type;
       Task_Info         : System.Task_Info.Task_Info_Type;
+      CPU               : Integer;
       Relative_Deadline : Ada.Real_Time.Time_Span;
       Num_Entries       : Task_Entry_Index;
       Master            : Master_Level;
@@ -489,6 +490,7 @@ package body System.Tasking.Stages is
       Success       : Boolean;
       Base_Priority : System.Any_Priority;
       Len           : Natural;
+      Base_CPU      : System.Multiprocessors.CPU_Range;
 
       pragma Unreferenced (Relative_Deadline);
       --  EDF scheduling is not supported by any of the target platforms so
@@ -522,6 +524,21 @@ package body System.Tasking.Stages is
          then Self_ID.Common.Base_Priority
          else System.Any_Priority (Priority));
 
+      if CPU /= Unspecified_CPU
+        and then (CPU < Integer (System.Multiprocessors.CPU_Range'First)
+          or else CPU > Integer (System.Multiprocessors.CPU_Range'Last)
+          or else CPU > Integer (System.Multiprocessors.Number_Of_CPUs))
+      then
+         raise Tasking_Error with "CPU not in range";
+
+      --  Normal CPU affinity
+      else
+         Base_CPU :=
+           (if CPU = Unspecified_CPU
+            then Self_ID.Common.Base_CPU
+            else System.Multiprocessors.CPU_Range (CPU));
+      end if;
+
       --  Find parent P of new Task, via master level number
 
       P := Self_ID;
@@ -570,7 +587,7 @@ package body System.Tasking.Stages is
       end if;
 
       Initialize_ATCB (Self_ID, State, Discriminants, P, Elaborated,
-        Base_Priority, Task_Info, Size, T, Success);
+        Base_Priority, Base_CPU, Task_Info, Size, T, Success);
 
       if not Success then
          Free (T);