/usr/share/ada/adainclude/gnatcoll/gnatcoll-traces.adb is in libgnatcoll1.6-dev 1.6gpl2014-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- G N A T C O L L --
-- --
-- Copyright (C) 2001-2014, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, or (at your option) any later --
-- version. This library is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- --
-- --
-- --
-- --
-- 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/>. --
-- --
------------------------------------------------------------------------------
pragma Ada_2012;
with Ada.Calendar; use Ada.Calendar;
with Ada.Calendar.Formatting; use Ada.Calendar.Formatting;
with Ada.Calendar.Time_Zones; use Ada.Calendar.Time_Zones;
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Strings.Fixed; use Ada.Strings.Fixed;
with Ada.Text_IO; use Ada.Text_IO;
with Ada.Unchecked_Deallocation;
with GNAT.Calendar; use GNAT.Calendar;
with GNAT.Calendar.Time_IO; use GNAT.Calendar.Time_IO;
with GNAT.Directory_Operations; use GNAT.Directory_Operations;
with GNATCOLL.Mmap; use GNATCOLL.Mmap;
with GNAT.OS_Lib; use GNAT.OS_Lib;
with GNAT.Task_Lock; use GNAT.Task_Lock;
with GNAT.Traceback; use GNAT.Traceback;
with System.Address_Image;
with System.Assertions; use System.Assertions;
pragma Warnings (Off);
with System.Traceback_Entries; use System.Traceback_Entries;
with GNATCOLL.Utils; use GNATCOLL.Utils;
with GNATCOLL.VFS_Utils; use GNATCOLL.VFS_Utils;
pragma Warnings (On);
package body GNATCOLL.Traces is
On_Exception : On_Exception_Mode := Propagate;
-- The behavior that should be adopted when something unexpected prevent
-- the log stream to be written.
No_Time : constant Ada.Calendar.Time :=
Ada.Calendar.Time_Of
(Ada.Calendar.Year_Number'First,
Ada.Calendar.Month_Number'First,
Ada.Calendar.Day_Number'First);
-- Note: we can remove this constant once we require GNAT 6.1 to build
-- GPS.
-- Note: rev 1.5 of this file has a (disabled) support for symbolic
-- tracebacks.
-- ??? We could display the stack pointer with
-- procedure Print_Sp is
-- start : aliased Integer;
-- begin
-- Put_Line (System.Address_Image (Start'Address));
-- end;
procedure Unchecked_Free is new Ada.Unchecked_Deallocation
(Trace_Handle_Record'Class, Trace_Handle);
procedure Unchecked_Free is new Ada.Unchecked_Deallocation
(Trace_Stream_Record'Class, Trace_Stream);
type Stream_Factories;
type Stream_Factories_List is access Stream_Factories;
type Stream_Factories is record
Name : GNAT.Strings.String_Access;
Factory : Stream_Factory_Access;
Next : Stream_Factories_List;
end record;
procedure Unchecked_Free is new Ada.Unchecked_Deallocation
(Stream_Factories, Stream_Factories_List);
procedure Unchecked_Free is new Ada.Unchecked_Deallocation
(Stream_Factory'Class, Stream_Factory_Access);
type Global_Vars is record
Handles_List : Trace_Handle := null;
-- The global list of all defined handles.
-- Accesses to this list are protected by calls to
-- System.Soft_Links.Lock_Task (we do not use a protected type so that
-- applications that do not use tasking otherwise do not drag the whole
-- tasking runtime in).
Wildcard_Handles_List : Trace_Handle := null;
-- Contains the configuration for module names containing stars, for
-- instance "*.EXCEPTIONS".
Streams_List : Trace_Stream := null;
-- The global list of all streams. Accesses to this list are protected
-- by calls to System.Soft_Links.Lock_Task. The default stream is the
-- first in the list.
Factories_List : Stream_Factories_List := null;
-- The global list of all factories. Access to this list are protected
-- by calls to Lock_Task
Default_Activation : Boolean := False;
-- Default activation status for debug handles (ie whether the
-- configuration file contained "+").
-- ??? Could be handled via a "*" star handle
Indentation : Natural := 0;
-- Current indentation for streams.
TZ : Time_Offset := UTC_Time_Offset;
-- Time zone cache, assuming that the OS will not change time zones
-- while this partition is running.
Activated : Boolean := False;
-- Whether this package has been activated. It is activated when at
-- least one config file is found (and parsed). Until it is activated,
-- no trace_handle will ever log anything.
end record;
Global : Global_Vars;
procedure Create_Exception_Handle (Handle : Trace_Handle);
-- Create the exception handle associated with Handle.
function Local_Sub_Second (T : Ada.Calendar.Time) return Integer;
pragma Inline (Local_Sub_Second);
-- Version of Local_Sub_Second taking advantage of the timezone cache
function Find_Handle (Unit_Name_Upper_Case : String) return Trace_Handle;
-- Return the debug handle associated with Unit_Name_Upper_Case,
-- or null if there is none. The case of Unit_Name_Upper_Case is
-- not changed.
-- Note: this subprogram doesn't do any locking, it is the
-- responsability of the called to make sure that not two tasks
-- can access it at the same time.
function Find_Wildcard_Handle
(Unit_Name_Upper_Case : String) return Trace_Handle;
-- Check whether there is a module name that contains a "*" and that can be
-- used to provide the default configuration for Unit_Name_Upper_Case
function Wildcard_Applies_To
(Upper_Name : String; Upper_Star : String) return Boolean;
-- Whether the module Upper_Name should take its default configuration from
-- Upper_Wildcard_Name.
function Find_Stream
(Stream_Name : String;
Config_File_Name : String;
Append : Boolean) return Trace_Stream;
-- Return the stream associated with that name (either an existing one or
-- one created by a factory), or null if the default stream should be
-- applied. This program doesn't do any locking, and must be called from
-- withing appropriately locked code.
procedure Log
(Handle : Trace_Handle;
Message : String;
Location : String := GNAT.Source_Info.Source_Location;
Entity : String := GNAT.Source_Info.Enclosing_Entity;
Message_Color : String := Default_Fg);
-- Log a message to Handle unconditionally
procedure Put_Absolute_Time (Stream : in out Trace_Stream_Record'Class);
-- Print the absolute time in Handle. No locking is done, this is the
-- responsability of the caller. No colors is modified either.
procedure Put_Elapsed_Time
(Handle : in out Trace_Handle_Record'Class;
Stream : in out Trace_Stream_Record'Class);
-- Print the elapsed time the last call to Trace for this Handle. No
-- locking done.
procedure Put_Stack_Trace (Stream : in out Trace_Stream_Record'Class);
-- Print the stack trace for this handle. No locking done
function Config_File
(Filename : Virtual_File;
Default : Virtual_File)
return Virtual_File;
-- Return the name of the config file to use.
-- If Filename is specified, this is the file to use, providing it exists.
-- Otherwise, we use a .gnatdebug in the current directory, and if there is
-- none, Default if it exists.
-- The empty string is returned if no such file was found.
function Create_Internal
(Unit_Name : String;
From_Config_File : Boolean;
Default : Default_Activation_Status := From_Config;
Stream : Trace_Stream := null;
Factory : Handle_Factory := null;
Finalize : Boolean := True) return Trace_Handle;
-- Internal version of Create.
function Get_Process_Id return Integer;
-- Return the process ID of the current process
pragma Import (C, Get_Process_Id, "getpid");
type File_Type_Access is access all File_Type;
procedure Unchecked_Free is new Ada.Unchecked_Deallocation
(File_Type, File_Type_Access);
type File_Stream_Record is new Trace_Stream_Record with record
File : File_Type_Access;
end record;
overriding procedure Put (Stream : in out File_Stream_Record; Str : String);
overriding procedure Newline (Stream : in out File_Stream_Record);
overriding procedure Close (Stream : in out File_Stream_Record);
-- Logs to a file
type Stdout_Stream_Record is new Trace_Stream_Record with null record;
overriding procedure Put
(Stream : in out Stdout_Stream_Record; Str : String);
overriding procedure Newline (Stream : in out Stdout_Stream_Record);
-- Logs to stdout
type Stderr_Stream_Record is new Trace_Stream_Record with null record;
overriding procedure Put
(Stream : in out Stderr_Stream_Record; Str : String);
overriding procedure Newline (Stream : in out Stderr_Stream_Record);
-- Logs to stderr
-----------------
-- Find_Handle --
-----------------
function Find_Handle (Unit_Name_Upper_Case : String) return Trace_Handle is
Tmp : Trace_Handle := Global.Handles_List;
begin
while Tmp /= null
and then Tmp.Name.all /= Unit_Name_Upper_Case
loop
Tmp := Tmp.Next;
end loop;
return Tmp;
end Find_Handle;
-------------------------
-- Wildcard_Applies_To --
-------------------------
function Wildcard_Applies_To
(Upper_Name : String; Upper_Star : String) return Boolean
is
begin
if Upper_Star (Upper_Star'First) = '*' then
-- Test must include '.' in the suffix
if Ends_With
(Upper_Name, Upper_Star (Upper_Star'First + 1 .. Upper_Star'Last))
then
return True;
end if;
elsif Upper_Star (Upper_Star'Last) = '*' then
-- "MODULE.*" should include "MODULE" itself
if Upper_Name =
Upper_Star (Upper_Star'First .. Upper_Star'Last - 2)
then
return True;
end if;
-- Otherwise "MODULE.*" should match "MODULE.FOO" but not
-- MODULEFOO.BAR
if Starts_With
(Upper_Name, Upper_Star (Upper_Star'First .. Upper_Star'Last - 1))
then
return True;
end if;
end if;
return False;
end Wildcard_Applies_To;
--------------------------
-- Find_Wildcard_Handle --
--------------------------
function Find_Wildcard_Handle
(Unit_Name_Upper_Case : String) return Trace_Handle
is
Tmp : Trace_Handle := Global.Wildcard_Handles_List;
begin
while Tmp /= null loop
if Wildcard_Applies_To
(Upper_Name => Unit_Name_Upper_Case,
Upper_Star => Tmp.Name.all)
then
return Tmp;
end if;
Tmp := Tmp.Next;
end loop;
return null;
end Find_Wildcard_Handle;
------------------------
-- Show_Configuration --
------------------------
procedure Show_Configuration (Output : Output_Proc) is
Tmp : Trace_Handle := Global.Handles_List;
begin
if Global.Streams_List /= null then
Output ("> " & Global.Streams_List.Name.all);
end if;
while Tmp /= null loop
if Tmp.Stream /= null then
if Tmp.Active then
Output (Tmp.Name.all & "=yes >" & Tmp.Stream.Name.all);
else
Output (Tmp.Name.all & "=no >" & Tmp.Stream.Name.all);
end if;
else
if Tmp.Active then
Output (Tmp.Name.all & "=yes");
else
Output (Tmp.Name.all & "=no");
end if;
end if;
Tmp := Tmp.Next;
end loop;
end Show_Configuration;
-----------------
-- Find_Stream --
-----------------
function Find_Stream
(Stream_Name : String;
Config_File_Name : String;
Append : Boolean) return Trace_Stream
is
procedure Add_To_Streams (Tmp : Trace_Stream);
--------------------
-- Add_To_Streams --
--------------------
procedure Add_To_Streams (Tmp : Trace_Stream) is
begin
-- If possible, do not put this first on the list of streams,
-- since it would become the default stream
if Global.Streams_List = null then
Global.Streams_List := Tmp;
Tmp.Next := null;
else
Tmp.Next := Global.Streams_List.Next;
Global.Streams_List.Next := Tmp;
end if;
end Add_To_Streams;
Name : constant String := Trim (Stream_Name, Ada.Strings.Both);
Tmp : Trace_Stream;
Colon : Natural;
TmpF : Stream_Factories_List;
begin
if Name = "" then
return null;
end if;
Lock;
-- Do we have a matching existing stream ?
Tmp := Global.Streams_List;
while Tmp /= null loop
if Tmp.Name.all = Name then
Unlock;
return Tmp;
end if;
Tmp := Tmp.Next;
end loop;
Colon := Index (Name, ":");
if Colon < Name'First then
Colon := Name'Last + 1;
end if;
-- Do we have a matching factory (if we start with "&")?
if Name = "&1" then
Tmp := new Stdout_Stream_Record'
(Name => new String'(Name),
Next => null);
Add_To_Streams (Tmp);
elsif Name = "&2" then
Tmp := new Stderr_Stream_Record'
(Name => new String'(Name),
Next => null);
Add_To_Streams (Tmp);
elsif Name (Name'First) = '&' then
Tmp := null;
TmpF := Global.Factories_List;
while TmpF /= null loop
if TmpF.Name.all = Name (Name'First .. Colon - 1) then
if Colon < Name'Last then
Tmp := TmpF.Factory.New_Stream
(Name (Colon + 1 .. Name'Last));
else
Tmp := TmpF.Factory.New_Stream ("");
end if;
Tmp.Name := new String'(Name);
Add_To_Streams (Tmp);
exit;
end if;
TmpF := TmpF.Next;
end loop;
else
Tmp := new File_Stream_Record'
(Name => new String'(Name),
Next => null,
File => new File_Type);
declare
Max_Date_Width : constant Natural := 10; -- "yyyy-mm-dd"
Max_PID_Width : constant Natural := 12;
Max_Name_Last : constant Natural :=
Name'Last + Max_Date_Width + Max_PID_Width;
Name_Tmp : String (Name'First .. Max_Name_Last);
Index : Integer := Name_Tmp'First;
N : Integer := Name'First;
begin
while N <= Name'Last loop
if Name (N) = '$' then
if N < Name'Last
and then Name (N + 1) = '$'
then
declare
Pid : constant String :=
Integer'Image (Get_Process_Id);
begin
Name_Tmp (Index .. Index + Pid'Length - 2) :=
Pid (Pid'First + 1 .. Pid'Last);
Index := Index + Pid'Length - 1;
N := N + 1;
end;
elsif N < Name'Last
and then (Name (N + 1) = 'D' or else Name (N + 1) = 'T')
then
declare
Date : constant String :=
Image (Clock, ISO_Date
& (if Name (N + 1) = 'T'
then "T%T"
else ""));
begin
Name_Tmp (Index .. Index + Date'Length - 1) := Date;
Index := Index + Date'Length;
N := N + 1;
end;
else
Name_Tmp (Index) := Name (N);
Index := Index + 1;
end if;
else
Name_Tmp (Index) := Name (N);
Index := Index + 1;
end if;
N := N + 1;
end loop;
declare
N : constant String := Normalize_Pathname
(Name_Tmp (Name_Tmp'First .. Index - 1),
Dir_Name (Config_File_Name));
begin
if Append
and then Is_Regular_File (N)
then
Open (File_Stream_Record (Tmp.all).File.all, Append_File, N);
else
Create (File_Stream_Record (Tmp.all).File.all, Out_File, N);
end if;
exception
when Ada.Text_IO.Use_Error =>
-- Default to stderr
Unchecked_Free (Tmp);
Tmp := new Stderr_Stream_Record'
(Name => new String'(Name), Next => null);
end;
Add_To_Streams (Tmp);
end;
end if;
-- Else use the default stream
Unlock;
return Tmp;
end Find_Stream;
------------
-- Create --
------------
function Create
(Unit_Name : String;
Default : Default_Activation_Status := From_Config;
Stream : String := "";
Factory : Handle_Factory := null;
Finalize : Boolean := True) return Trace_Handle
is
begin
if Debug_Mode then
return Create_Internal
(Unit_Name => Unit_Name,
From_Config_File => False,
Default => Default,
Stream => Find_Stream (Stream, "", Append => False),
Factory => Factory,
Finalize => Finalize);
else
return null;
end if;
end Create;
---------------------
-- Create_Internal --
---------------------
function Create_Internal
(Unit_Name : String;
From_Config_File : Boolean;
Default : Default_Activation_Status := From_Config;
Stream : Trace_Stream := null;
Factory : Handle_Factory := null;
Finalize : Boolean := True) return Trace_Handle
is
Tmp, Tmp2 : Trace_Handle := null;
Wildcard_Tmp : Trace_Handle := null;
Upper_Case : constant String := To_Upper (Unit_Name);
Is_Star : Boolean;
begin
if Debug_Mode then
Lock;
Is_Star := Starts_With (Unit_Name, "*.")
or else Ends_With (Unit_Name, ".*");
if Is_Star then
Tmp := Find_Wildcard_Handle (Upper_Case);
else
Tmp := Find_Handle (Upper_Case);
end if;
if Tmp = null then
if Factory /= null then
Tmp := Factory.all;
end if;
if Tmp = null then
Tmp := new Trace_Handle_Record;
end if;
Tmp.Name := new String'(Upper_Case);
Tmp.Forced_Active := False;
Tmp.Count := 1;
Tmp.Timer := No_Time;
Tmp.Finalize := Finalize;
if Is_Star then
Wildcard_Tmp := null;
Tmp.Next := Global.Wildcard_Handles_List;
Global.Wildcard_Handles_List := Tmp;
else
Wildcard_Tmp := Find_Wildcard_Handle (Upper_Case);
Tmp.Next := Global.Handles_List;
Global.Handles_List := Tmp;
end if;
if Wildcard_Tmp /= null then
Tmp.Active := Wildcard_Tmp.Active;
Tmp.Forced_Active := True;
-- Unless we specified an explicit stream, inherit it
if Stream = null then
Tmp.Stream := Wildcard_Tmp.Stream;
end if;
else
Tmp.Active := Global.Default_Activation;
Tmp.Stream := null;
end if;
end if;
if Stream /= null then
-- Only override when we are parsing the configuration file, so
-- that if we have the following:
-- Me : Trace_Handle := Create ("ME", Stream => "str1");
-- parse config file, which contains "ME=yes >str2"
-- Me := Create ("ME", Stream => "str3")
-- then "ME" is sent to "str2" (priority is given to the config
-- file.
if From_Config_File or else Tmp.Stream = null then
Tmp.Stream := Stream;
end if;
end if;
if not Tmp.Forced_Active or else From_Config_File then
if Default = On then
Tmp.Active := True;
Tmp.Forced_Active := True;
elsif Default = Off then
Tmp.Active := False;
Tmp.Forced_Active := True;
end if;
end if;
-- If we are declaring a "wildcard" handle, we need to check
-- whether any existing handle would match (which will in
-- general be the case, since handles are declared at
-- elaboration time and star handles in the config file).
if Is_Star then
Tmp2 := Global.Handles_List;
while Tmp2 /= null loop
if Wildcard_Applies_To
(Tmp2.Name.all, Upper_Star => Upper_Case)
then
-- Always override the status of matching streams:
-- There are two scenarios here:
-- - in a given config file, we always respect the order
-- of declarations, thus wildcards should in general be put
-- at the beginning.
-- - if a wildcard is declared later on in Ada, we want
-- it to impact existing streams as well (as a convenience
-- for forcing specific settings from the code.
--
-- So do not check Tmp2.Forced_Active
Tmp2.Active := Tmp.Active;
if Tmp2.Stream = null then
Tmp2.Stream := Tmp.Stream;
end if;
end if;
Tmp2 := Tmp2.Next;
end loop;
end if;
Unlock;
end if;
return Tmp;
exception
when others =>
Unlock;
raise;
end Create_Internal;
------------------------
-- Predefined handles --
------------------------
-- This must be done after the body of Create has been seen
Absolute_Time : constant Trace_Handle := Create ("DEBUG.ABSOLUTE_TIME");
Absolute_Date : constant Trace_Handle :=
Create ("DEBUG.ABSOLUTE_DATE", Off);
Micro_Time : constant Trace_Handle :=
Create ("DEBUG.MICRO_TIME", Off);
Elapsed_Time : constant Trace_Handle := Create ("DEBUG.ELAPSED_TIME");
Stack_Trace : constant Trace_Handle := Create ("DEBUG.STACK_TRACE");
Colors : constant Trace_Handle := Create ("DEBUG.COLORS");
Enclosing_Entity : constant Trace_Handle :=
Create ("DEBUG.ENCLOSING_ENTITY");
Location : constant Trace_Handle := Create ("DEBUG.LOCATION");
Count_Trace : constant Trace_Handle := Create ("DEBUG.COUNT");
Finalize_Traces : constant Trace_Handle :=
Create ("DEBUG.FINALIZE_TRACES", On);
-- If set to Off, this module will not be finalized, and traces will still
-- be activated when the program itself is finalized by GNAT
---------------
-- Unit_Name --
---------------
function Unit_Name (Handle : Trace_Handle) return String is
begin
return Handle.Name.all;
end Unit_Name;
-----------------------------
-- Create_Exception_Handle --
-----------------------------
procedure Create_Exception_Handle (Handle : Trace_Handle) is
Default : Default_Activation_Status;
begin
if Handle.Exception_Handle = null then
-- Default activation should be the same as the handle
if Handle.Active then
Default := On;
else
Default := Off;
end if;
Handle.Exception_Handle := Create
(Unit_Name => Handle.Name.all & ".EXCEPTIONS",
Default => Default);
-- Unless the config file specified an explicit stream,
-- we inherit the one from Handle.
if Handle.Exception_Handle.Stream = null then
Handle.Exception_Handle.Stream := Handle.Stream;
end if;
end if;
end Create_Exception_Handle;
-----------
-- Trace --
-----------
procedure Trace
(Handle : Trace_Handle;
E : Ada.Exceptions.Exception_Occurrence;
Msg : String := "Unexpected exception: ";
Color : String := Default_Fg) is
begin
Create_Exception_Handle (Handle);
Trace (Handle.Exception_Handle,
Msg & Ada.Exceptions.Exception_Information (E),
Color => Color);
end Trace;
-----------
-- Trace --
-----------
procedure Trace
(Handle : Trace_Handle;
Message : String;
Color : String := Default_Fg;
Location : String := GNAT.Source_Info.Source_Location;
Entity : String := GNAT.Source_Info.Enclosing_Entity) is
begin
if Debug_Mode
and then Global.Activated
and then Global.Handles_List /= null -- module not terminated
then
if Handle.Active then
Log (Handle, Message, Location, Entity, Message_Color => Color);
end if;
if Count_Trace /= null then
Count_Trace.Count := Count_Trace.Count + 1;
end if;
-- Always increment the count: that way, testsuites can easily count
-- the number of queries that would have been emitted, even if they
-- don't explicitly log.
Handle.Count := Handle.Count + 1;
end if;
end Trace;
------------
-- Assert --
------------
procedure Assert
(Handle : Trace_Handle;
Condition : Boolean;
Error_Message : String;
Message_If_Success : String := "";
Raise_Exception : Boolean := True;
Location : String := GNAT.Source_Info.Source_Location;
Entity : String := GNAT.Source_Info.Enclosing_Entity) is
begin
if Debug_Mode
and then Global.Activated
and then Global.Handles_List /= null
and then Handle.Active
then
if not Condition then
Create_Exception_Handle (Handle);
Trace
(Handle.Exception_Handle,
Error_Message, Location, Entity, Red_Bg & Default_Fg);
if Raise_Exception then
Raise_Assert_Failure
(Error_Message & " (" & Entity & " at " &
Location & ")");
end if;
elsif Message_If_Success'Length /= 0 then
Trace (Handle, Message_If_Success, Location, Entity);
end if;
end if;
end Assert;
---------------------
-- Increase_Indent --
---------------------
procedure Increase_Indent
(Handle : Trace_Handle := null; Msg : String := "")
is
begin
if Handle /= null and then Msg /= "" then
Trace (Handle, Msg);
end if;
Global.Indentation := Global.Indentation + 1;
end Increase_Indent;
---------------------
-- Decrease_Indent --
---------------------
procedure Decrease_Indent
(Handle : Trace_Handle := null; Msg : String := "") is
begin
if Global.Indentation > 0 then
Global.Indentation := Global.Indentation - 1;
if Handle /= null and then Msg /= "" then
Trace (Handle, Msg);
end if;
else
if Handle /= null then
Trace (Handle, "Indentation error: two many decrease");
if Msg /= "" then
Trace (Handle, Msg);
end if;
end if;
end if;
end Decrease_Indent;
----------------
-- Set_Active --
----------------
procedure Set_Active (Handle : Trace_Handle; Active : Boolean) is
begin
Handle.Active := Active;
end Set_Active;
------------
-- Active --
------------
function Active (Handle : Trace_Handle) return Boolean is
begin
if Global.Handles_List = null then
-- If this module has been finalized, we always display the traces.
-- These traces are generally when GNAT finalizes controlled types...
return True;
elsif Handle = null then
-- In case Handle hasn't been initialized yet
return False;
else
return Handle.Active;
end if;
end Active;
----------------------
-- Local_Sub_Second --
----------------------
function Local_Sub_Second (T : Ada.Calendar.Time) return Integer is
Y : Year_Number;
M : Month_Number;
D : Day_Number;
H : Ada.Calendar.Formatting.Hour_Number;
Mi : Ada.Calendar.Formatting.Minute_Number;
S : Ada.Calendar.Formatting.Second_Number;
Ss : Ada.Calendar.Formatting.Second_Duration;
Ls : Boolean;
begin
Ada.Calendar.Formatting.Split (T, Y, M, D, H, Mi, S, Ss, Ls, Global.TZ);
return Integer (Ss * 1000.0);
end Local_Sub_Second;
-----------------------
-- Put_Absolute_Time --
-----------------------
procedure Put_Absolute_Time (Stream : in out Trace_Stream_Record'Class) is
T : constant Ada.Calendar.Time := Ada.Calendar.Clock;
Ms : constant String := Integer'Image (Local_Sub_Second (T));
begin
if Absolute_Date.Active then
if Absolute_Time.Active then
if Micro_Time.Active then
Put (Stream, "(" & Image (T, ISO_Date & " %T:%e") & ')');
else
Put (Stream, "(" & Image (T, ISO_Date & " %T.")
& Ms (Ms'First + 1 .. Ms'Last) & ')');
end if;
else
Put (Stream, "(" & Image (T, ISO_Date) & ')');
end if;
else
if Micro_Time.Active then
Put (Stream, "(" & Image (T, ISO_Date & " %T:%e") & ')');
else
Put (Stream, "(" & Image (T, "%T.")
& Ms (Ms'First + 1 .. Ms'Last) & ')');
end if;
end if;
end Put_Absolute_Time;
----------------------
-- Put_Elapsed_Time --
----------------------
procedure Put_Elapsed_Time
(Handle : in out Trace_Handle_Record'Class;
Stream : in out Trace_Stream_Record'Class)
is
T : constant Ada.Calendar.Time := Ada.Calendar.Clock;
Dur : Integer;
begin
if Handle.Timer /= No_Time then
Dur := Integer ((T - Handle.Timer) * 1000);
Put (Stream, "(elapsed:" & Integer'Image (Dur) & "ms)");
end if;
Handle.Timer := T;
end Put_Elapsed_Time;
---------------------
-- Put_Stack_Trace --
---------------------
procedure Put_Stack_Trace (Stream : in out Trace_Stream_Record'Class) is
Tracebacks : Tracebacks_Array (1 .. 50);
Len : Natural;
begin
Call_Chain (Tracebacks, Len);
Put (Stream, "(callstack: ");
for J in Tracebacks'First .. Len loop
Put (Stream, System.Address_Image (PC_For (Tracebacks (J))) & ' ');
end loop;
Put (Stream, ")");
end Put_Stack_Trace;
-------------------
-- Pre_Decorator --
-------------------
procedure Pre_Decorator
(Handle : in out Trace_Handle_Record;
Stream : in out Trace_Stream_Record'Class;
Message : String)
is
pragma Unreferenced (Message);
begin
if Count_Trace.Active then
declare
C : constant String := Integer'Image (Count_Trace.Count);
H : constant String := Integer'Image (Handle.Count);
begin
Put (Stream, H (H'First + 1 .. H'Last)
& '/' & C (C'First + 1 .. C'Last) & ' ');
end;
end if;
end Pre_Decorator;
--------------------
-- Post_Decorator --
--------------------
procedure Post_Decorator
(Handle : in out Trace_Handle_Record;
Stream : in out Trace_Stream_Record'Class;
Location : String;
Entity : String;
Message : String)
is
pragma Unreferenced (Message);
Space_Inserted : Boolean := False;
-- True when a space has been inserted after the main trace text, before
-- the Post_Decorator information.
procedure Ensure_Space;
-- Insert a space if not done already
------------------
-- Ensure_Space --
------------------
procedure Ensure_Space is
begin
if not Space_Inserted then
Put (Stream, " ");
Space_Inserted := True;
end if;
end Ensure_Space;
begin
if (Absolute_Time.Active or else Absolute_Date.Active)
and then Supports_Time (Stream)
then
Ensure_Space;
Put_Absolute_Time (Stream);
end if;
if Elapsed_Time.Active then
Ensure_Space;
Put_Elapsed_Time (Handle, Stream);
end if;
if Traces.Location.Active then
Ensure_Space;
Put (Stream, "(loc: " & Location & ')');
end if;
if Enclosing_Entity.Active then
Ensure_Space;
Put (Stream, "(entity:" & Entity & ')');
end if;
if Stack_Trace.Active then
Ensure_Space;
Put_Stack_Trace (Stream);
end if;
end Post_Decorator;
---------
-- Log --
---------
procedure Log
(Handle : Trace_Handle;
Message : String;
Location : String := GNAT.Source_Info.Source_Location;
Entity : String := GNAT.Source_Info.Enclosing_Entity;
Message_Color : String := Default_Fg)
is
Start, Last : Natural;
Continuation : constant String := '_' & Handle.Name.all & "_ ";
Stream : Trace_Stream;
Color : Boolean;
begin
if Message'Length = 0 then
return;
end if;
if Handle.Stream /= null then
Stream := Handle.Stream;
else
Stream := Global.Streams_List;
end if;
if Stream = null then
return;
end if;
Color := Colors.Active and then Supports_Color (Stream.all);
Lock;
if Global.Indentation > 0 then
Put (Stream.all, String'(1 .. Global.Indentation * 3 => ' '));
end if;
if Color then
Put (Stream.all, Cyan_Fg);
end if;
Put (Stream.all, '[' & Handle.Name.all & "] ");
Pre_Decorator (Handle.all, Stream.all, Message);
if Color then
Put (Stream.all, Message_Color);
end if;
Start := Message'First;
loop
Last := Start;
while Last <= Message'Last
and then Message (Last) /= ASCII.LF
and then Message (Last) /= ASCII.CR
loop
Last := Last + 1;
end loop;
Put (Stream.all, Message (Start .. Last - 1));
Start := Last + 1;
exit when Start > Message'Last;
Newline (Stream.all);
if Color then
Put (Stream.all, Purple_Fg & Default_Bg);
end if;
Put (Stream.all, Continuation);
if Color then
Put (Stream.all, Message_Color);
end if;
end loop;
if Color then
Put (Stream.all, Brown_Fg & Default_Bg);
end if;
Post_Decorator
(Handle => Handle.all,
Stream => Stream.all,
Message => Message,
Location => Location,
Entity => Entity);
if Color then
Put (Stream.all, Default_Fg);
end if;
Newline (Stream.all);
Unlock;
exception
when others =>
Unlock;
case On_Exception is
when Propagate =>
raise;
when Ignore =>
null;
when Deactivate =>
if Stream /= null then
begin
Close (Stream.all);
exception
when others =>
null;
end;
end if;
end case;
end Log;
-----------------
-- Config_File --
-----------------
function Config_File
(Filename : Virtual_File;
Default : Virtual_File)
return Virtual_File
is
Env : GNAT.Strings.String_Access;
Ret : Virtual_File;
begin
if Filename /= No_File and then Filename.Is_Regular_File then
return Filename;
end if;
Env := Getenv (Config_File_Environment);
-- First test the file described in the environment variable
if Env /= null and then Env.all /= "" then
Ret := Create (+Env.all);
Free (Env);
if Ret.Is_Regular_File then
return Ret;
end if;
return No_File;
end if;
Free (Env);
-- Then the file in the current directory
Ret := Create_From_Dir (Get_Current_Dir, Default_Config_File);
if Ret.Is_Regular_File then
return Ret;
end if;
-- Then the file in the user's home directory
Ret := Create_From_Dir (Get_Home_Directory, Default_Config_File);
if Ret.Is_Regular_File then
return Ret;
end if;
-- Finally the default file
if Default /= No_File and then Is_Regular_File (Default) then
return Default;
end if;
return No_File;
end Config_File;
-----------------------------
-- Register_Stream_Factory --
-----------------------------
procedure Register_Stream_Factory
(Name : String; Factory : Stream_Factory_Access)
is
begin
Lock;
Global.Factories_List := new Stream_Factories'
(Name => new String'("&" & Name),
Factory => Factory,
Next => Global.Factories_List);
Unlock;
end Register_Stream_Factory;
--------------------
-- Supports_Color --
--------------------
function Supports_Color (Stream : Trace_Stream_Record) return Boolean is
pragma Unreferenced (Stream);
begin
return True;
end Supports_Color;
-------------------
-- Supports_Time --
-------------------
function Supports_Time (Stream : Trace_Stream_Record) return Boolean is
pragma Unreferenced (Stream);
begin
return True;
end Supports_Time;
-----------
-- Close --
-----------
procedure Close (Stream : in out Trace_Stream_Record) is
begin
Free (Stream.Name);
end Close;
---------
-- Put --
---------
procedure Put (Stream : in out Stdout_Stream_Record; Str : String) is
pragma Unreferenced (Stream);
begin
Put (Str);
end Put;
-------------
-- Newline --
-------------
procedure Newline (Stream : in out Stdout_Stream_Record) is
pragma Unreferenced (Stream);
begin
New_Line;
Flush;
end Newline;
---------
-- Put --
---------
procedure Put (Stream : in out Stderr_Stream_Record; Str : String) is
pragma Unreferenced (Stream);
begin
Put (Ada.Text_IO.Standard_Error, Str);
end Put;
-------------
-- Newline --
-------------
procedure Newline (Stream : in out Stderr_Stream_Record) is
pragma Unreferenced (Stream);
begin
New_Line (Ada.Text_IO.Standard_Error);
Flush (Ada.Text_IO.Standard_Error);
end Newline;
---------
-- Put --
---------
procedure Put (Stream : in out File_Stream_Record; Str : String) is
begin
if Stream.File /= null then
Put (Stream.File.all, Str);
end if;
end Put;
-------------
-- Newline --
-------------
procedure Newline (Stream : in out File_Stream_Record) is
begin
if Stream.File /= null then
New_Line (Stream.File.all);
Flush (Stream.File.all);
end if;
end Newline;
-----------
-- Close --
-----------
procedure Close (Stream : in out File_Stream_Record) is
begin
Close (Stream.File.all);
Unchecked_Free (Stream.File);
Close (Trace_Stream_Record (Stream));
end Close;
-----------------------
-- Parse_Config_File --
-----------------------
procedure Parse_Config_File
(Filename : Virtual_File;
Default : Virtual_File := No_File;
On_Exception : On_Exception_Mode := Propagate;
Force_Activation : Boolean := True)
is
File_Name : constant Virtual_File := Config_File (Filename, Default);
Buffer : Str_Access;
File : Mapped_File;
Index, First, Max : Natural;
Handle : Trace_Handle;
procedure Skip_Spaces (Skip_Newline : Boolean := True);
-- Skip the spaces (including possibly newline), and leave Index on the
-- first non blank character.
procedure Skip_To_Newline (Stop_At_First_Blank : Boolean := False);
-- Set Index after the last significant character on the line (either
-- the ASCII.LF or after the last character in the buffer).
-----------------
-- Skip_Spaces --
-----------------
procedure Skip_Spaces (Skip_Newline : Boolean := True) is
begin
while Index <= Last (File)
and then (Buffer (Index) = ' '
or else (Buffer (Index) = ASCII.LF
and then Skip_Newline)
or else Buffer (Index) = ASCII.CR
or else Buffer (Index) = ASCII.HT)
loop
Index := Index + 1;
end loop;
end Skip_Spaces;
---------------------
-- Skip_To_Newline --
---------------------
procedure Skip_To_Newline (Stop_At_First_Blank : Boolean := False) is
begin
while Index <= Last (File)
and then Buffer (Index) /= ASCII.LF
and then (not Stop_At_First_Blank
or else (Buffer (Index) /= ' '
and then Buffer (Index) /= ASCII.HT))
loop
Index := Index + 1;
end loop;
end Skip_To_Newline;
begin
GNATCOLL.Traces.On_Exception := On_Exception;
if File_Name = No_File then
if Force_Activation then
Global.Activated := True;
end if;
else
begin
File := Open_Read (+File_Name.Full_Name);
exception
when Name_Error =>
return;
end;
Lock;
Global.Activated := True;
Read (File);
Buffer := Data (File);
Index := 1;
loop
Skip_Spaces;
exit when Index > Last (File);
if Index + 1 <= Last (File)
and then String (Buffer (Index .. Index + 1)) = "--"
then
Skip_To_Newline;
else
case Buffer (Index) is
when '>' =>
declare
Save : Integer := Index + 1;
Stream : Trace_Stream;
Tmp : Trace_Stream;
Append : constant Boolean := Buffer (Index + 1) = '>';
begin
if Append then
Save := Index + 2;
end if;
Skip_To_Newline;
if Buffer (Index - 1) = ASCII.CR then
Stream := Find_Stream
(String (Buffer (Save .. Index - 2)),
+File_Name.Full_Name,
Append);
else
Stream := Find_Stream
(String (Buffer (Save .. Index - 1)),
+File_Name.Full_Name,
Append);
end if;
if Stream /= null then
-- Put this first in the list, since that's the
-- default
if Global.Streams_List /= Stream then
Tmp := Global.Streams_List;
while Tmp /= null
and then Tmp.Next /= Stream
loop
Tmp := Tmp.Next;
end loop;
if Tmp /= null then
Tmp.Next := Stream.Next;
Stream.Next := Global.Streams_List;
Global.Streams_List := Stream;
end if;
end if;
end if;
end;
when '+' =>
Global.Default_Activation := True;
Skip_To_Newline;
Handle := Global.Handles_List;
while Handle /= null loop
if not Handle.Forced_Active
and then Handle /= Absolute_Time
and then Handle /= Elapsed_Time
and then Handle /= Stack_Trace
and then Handle /= Colors
and then Handle /= Enclosing_Entity
and then Handle /= Location
then
Handle.Active := True;
-- A later declaration of the stream in the code
-- should not be allowed to reset Active to False
Handle.Forced_Active := True;
end if;
Handle := Handle.Next;
end loop;
when others =>
First := Index;
while Index <= Last (File)
and then Buffer (Index) /= '='
and then Buffer (Index) /= '>'
and then Buffer (Index) /= '-'
and then Buffer (Index) /= ASCII.LF
and then Buffer (Index) /= ASCII.CR
loop
Index := Index + 1;
end loop;
Max := Index - 1;
while Max >= 1
and then (Buffer (Max) = ' '
or else Buffer (Max) = ASCII.HT)
loop
Max := Max - 1;
end loop;
declare
Active : Default_Activation_Status := From_Config;
Stream : Trace_Stream := null;
begin
-- Is this active ?
if Index > Last (File)
or else Buffer (Index) /= '='
then
Active := On;
else
Index := Index + 1;
Skip_Spaces;
if Index + 1 > Last (File) or else
String (Buffer (Index .. Index + 1)) /= "no"
then
Active := On;
else
Active := Off;
end if;
end if;
-- What stream is this sent to ?
while Index <= Last (File)
and then Buffer (Index) /= '>'
and then Buffer (Index) /= ASCII.LF
and then Buffer (Index) /= ASCII.CR
loop
Index := Index + 1;
end loop;
if Index <= Last (File)
and then Buffer (Index) = '>'
then
declare
Save : Integer := Index + 1;
Append : constant Boolean :=
Buffer (Index + 1) = '>';
begin
if Append then
Save := Index + 2;
end if;
Skip_To_Newline;
if Buffer (Index - 1) = ASCII.CR then
Stream := Find_Stream
(String (Buffer (Save .. Index - 2)),
+File_Name.Full_Name, Append);
else
Stream := Find_Stream
(String (Buffer (Save .. Index - 1)),
+File_Name.Full_Name, Append);
end if;
end;
else
Skip_To_Newline;
end if;
Handle := Create_Internal
(String (Buffer (First .. Max)),
From_Config_File => True,
Default => Active,
Stream => Stream);
end;
end case;
end if;
end loop;
Close (File);
Unlock;
end if;
exception
when others =>
Unlock;
raise;
end Parse_Config_File;
-----------------------
-- Parse_Config_File --
-----------------------
procedure Parse_Config_File
(Filename : String := "";
Default : String := "";
On_Exception : On_Exception_Mode := Propagate;
Force_Activation : Boolean := True)
is
F_Filename : Virtual_File;
F_Default : Virtual_File;
begin
if Filename = "" then
F_Filename := No_File;
else
F_Filename := Create_From_Base (+Filename);
end if;
if Default = "" then
F_Default := No_File;
else
F_Default := Create_From_Base (+Default);
end if;
Parse_Config_File
(F_Filename, F_Default, On_Exception, Force_Activation);
end Parse_Config_File;
--------------
-- Finalize --
--------------
procedure Finalize is
Tmp : Trace_Handle;
Next : Trace_Handle;
TmpS : Trace_Stream;
NextS : Trace_Stream;
TmpF : Stream_Factories_List;
NextF : Stream_Factories_List;
begin
if Active (Finalize_Traces) then
Lock;
Tmp := Global.Handles_List;
while Tmp /= null loop
Next := Tmp.Next;
if Tmp.Finalize then
Free (Tmp.Name);
Unchecked_Free (Tmp);
end if;
Tmp := Next;
end loop;
Global.Handles_List := null;
Tmp := Global.Wildcard_Handles_List;
while Tmp /= null loop
Next := Tmp.Next;
if Tmp.Finalize then
Free (Tmp.Name);
Unchecked_Free (Tmp);
end if;
Tmp := Next;
end loop;
Global.Wildcard_Handles_List := null;
TmpS := Global.Streams_List;
while TmpS /= null loop
NextS := TmpS.Next;
Close (TmpS.all);
Unchecked_Free (TmpS);
TmpS := NextS;
end loop;
Global.Streams_List := null;
TmpF := Global.Factories_List;
while TmpF /= null loop
NextF := TmpF.Next;
Free (TmpF.Name);
Unchecked_Free (TmpF.Factory);
Unchecked_Free (TmpF);
TmpF := NextF;
end loop;
Global.Factories_List := null;
Unlock;
end if;
end Finalize;
------------------------
-- Set_Default_Stream --
------------------------
procedure Set_Default_Stream (Name : String) is
S : Trace_Stream;
T : Trace_Stream;
begin
if Name'Length > 2
and then Name (Name'First .. Name'First + 1) = ">>"
then
S := Find_Stream
(Name (Name'First + 2 .. Name'Last), "", Append => True);
else
S := Find_Stream (Name, "", Append => False);
end if;
-- Put it first in the list
if Global.Streams_List /= S then
T := Global.Streams_List;
while T.Next /= S loop
T := T.Next;
end loop;
T.Next := S.Next;
S.Next := Global.Streams_List;
Global.Streams_List := S;
end if;
end Set_Default_Stream;
-----------
-- Count --
-----------
function Count (Handler : Trace_Handle) return Natural is
begin
if Handler = null then
return 0;
else
return Handler.Count;
end if;
end Count;
begin
-- This is the default stream, always register it
Set_Default_Stream ("&1");
end GNATCOLL.Traces;
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