------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- A D A . E X E C U T I O N _ T I M E -- -- -- -- B o d y -- -- -- -- Copyright (C) 2007-2020, Free Software Foundation, Inc. -- -- -- -- GNAT 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 3, or (at your option) any later ver- -- -- sion. GNAT 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. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This is the Darwin version of this package with Ada.Task_Identification; use Ada.Task_Identification; with Ada.Unchecked_Conversion; with System.Tasking; with System.OS_Interface; use System.OS_Interface; with System.Task_Primitives.Operations; use System.Task_Primitives.Operations; with Interfaces.C; use Interfaces.C; package body Ada.Execution_Time is --------- -- "+" -- --------- function "+" (Left : CPU_Time; Right : Ada.Real_Time.Time_Span) return CPU_Time is use type Ada.Real_Time.Time; begin return CPU_Time (Ada.Real_Time.Time (Left) + Right); end "+"; function "+" (Left : Ada.Real_Time.Time_Span; Right : CPU_Time) return CPU_Time is use type Ada.Real_Time.Time; begin return CPU_Time (Left + Ada.Real_Time.Time (Right)); end "+"; --------- -- "-" -- --------- function "-" (Left : CPU_Time; Right : Ada.Real_Time.Time_Span) return CPU_Time is use type Ada.Real_Time.Time; begin return CPU_Time (Ada.Real_Time.Time (Left) - Right); end "-"; function "-" (Left : CPU_Time; Right : CPU_Time) return Ada.Real_Time.Time_Span is use type Ada.Real_Time.Time; begin return (Ada.Real_Time.Time (Left) - Ada.Real_Time.Time (Right)); end "-"; ----------- -- Clock -- ----------- function Clock (T : Ada.Task_Identification.Task_Id := Ada.Task_Identification.Current_Task) return CPU_Time is function Convert_Ids is new Ada.Unchecked_Conversion (Task_Id, System.Tasking.Task_Id); function To_CPU_Time is new Ada.Unchecked_Conversion (Duration, CPU_Time); -- Time is equal to Duration (although it is a private type) and -- CPU_Time is equal to Time. subtype integer_t is Interfaces.C.int; subtype mach_port_t is integer_t; -- Type definition for Mach. type time_value_t is record seconds : integer_t; microseconds : integer_t; end record; pragma Convention (C, time_value_t); -- Mach time_value_t type thread_basic_info_t is record user_time : time_value_t; system_time : time_value_t; cpu_usage : integer_t; policy : integer_t; run_state : integer_t; flags : integer_t; suspend_count : integer_t; sleep_time : integer_t; end record; pragma Convention (C, thread_basic_info_t); -- Mach structure from thread_info.h THREAD_BASIC_INFO : constant := 3; THREAD_BASIC_INFO_COUNT : constant := 10; -- Flavors for basic info function thread_info (Target : mach_port_t; Flavor : integer_t; Thread_Info : System.Address; Count : System.Address) return integer_t; pragma Import (C, thread_info); -- Mach call to get info on a thread function pthread_mach_thread_np (Thread : pthread_t) return mach_port_t; pragma Import (C, pthread_mach_thread_np); -- Get Mach thread from posix thread Result : Interfaces.C.int; Thread : pthread_t; Port : mach_port_t; Ti : thread_basic_info_t; Count : integer_t; begin if T = Ada.Task_Identification.Null_Task_Id then raise Program_Error; end if; Thread := Get_Thread_Id (Convert_Ids (T)); Port := pthread_mach_thread_np (Thread); pragma Assert (Port > 0); Count := THREAD_BASIC_INFO_COUNT; Result := thread_info (Port, THREAD_BASIC_INFO, Ti'Address, Count'Address); pragma Assert (Result = 0); pragma Assert (Count = THREAD_BASIC_INFO_COUNT); return To_CPU_Time (Duration (Ti.user_time.seconds + Ti.system_time.seconds) + Duration (Ti.user_time.microseconds + Ti.system_time.microseconds) / 1E6); end Clock; -------------------------- -- Clock_For_Interrupts -- -------------------------- function Clock_For_Interrupts return CPU_Time is begin -- According to AI 0170-1, D.14(18.1/3), if Interrupt_Clocks_Supported -- is set to False the function raises Program_Error. raise Program_Error; return CPU_Time_First; end Clock_For_Interrupts; ----------- -- Split -- ----------- procedure Split (T : CPU_Time; SC : out Ada.Real_Time.Seconds_Count; TS : out Ada.Real_Time.Time_Span) is begin Ada.Real_Time.Split (Ada.Real_Time.Time (T), SC, TS); end Split; ------------- -- Time_Of -- ------------- function Time_Of (SC : Ada.Real_Time.Seconds_Count; TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero) return CPU_Time is begin return CPU_Time (Ada.Real_Time.Time_Of (SC, TS)); end Time_Of; end Ada.Execution_Time;