| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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) 2007-2021, 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 -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- 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; |
