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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. From-SVN: r165625
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