Posted by jpluimers on 2019/02/23
Idera is laying of a lot of really good Travis engineers.
If you want to hire them, then follow the [Archive.is] #TravisAlums hashtag on Twitter
Via: [WayBack] José León Serna on Twitter: “Idera acquired Embarcadero Technologies in 2016 and fired almost all its R&D (150+ people in Spain, Russia, US, etc) so not sure why #TravisAlums are surprised, that’s what they do, that’s their business model.”
–jeroen
Posted in Continuous Integration, Development, Software Development, TravisCI | Leave a Comment »
Posted by jpluimers on 2019/02/21
A while ago, I ran into a problem that an anonymous thread would run longer than the main thread of the application.
This caused all sorts of trouble, so in this case I decided to fix it for that particular thread.
There are various opinions if this should be done for all threads or not. Like always, it depends, so it is good to mention a few:
This particular case resulted into the memory manager shutting down earlier than the anonymous thread, but the anonymous thread was still using memory allocation functions, resulting into a few things of which you do not want the first and second to happen on a continuous integration system:
--------------------------- MyIntegrationTests.exe: MM Operation after uninstall. --------------------------- FastMM has detected a GetMem call after FastMM was uninstalled. --------------------------- OK ---------------------------
or
--------------------------- MyIntegrationTests.exe: MM Operation after uninstall. --------------------------- FastMM has detected a FreeMem call after FastMM was uninstalled. --------------------------- OK ---------------------------
either of them followed by
--------------------------- Error --------------------------- Runtime error 203 at 00408EFF --------------------------- OK ---------------------------
or
--------------------------- Error --------------------------- Runtime error 204 at 0040AFE9 --------------------------- OK ---------------------------
The errors are mappings of:
203, { reOutOfMemory }
204, { reInvalidPtr }
MyIntegrationTests_MemoryManager_EventLog.txt to rapidly grow to 100s of megabytes.MyIntegrationTests_MemoryManager_EventLog.txt not to be truncated.This particular case was easy to fix by adding a global (but implementation section contained) boolean indicating if the thread was already finished:
unit DebugInformationLoaderUnit;
interface
implementation
uses
JclDebug;
var
LoadDebugInformationAsyncFinished: Boolean = False;
procedure LoadDebugInformationAsync;
begin
TThread.CreateAnonymousThread(
procedure
begin
TThread.NameThreadForDebugging('LoadDebugInforoamtionAsync');
DebugInfoAvailable(MainInstance);
LoadDebugInformationAsyncFinished := True;
end).Start;
end;
initialization
LoadDebugInformationAsync;
finalization
while not LoadDebugInformationAsyncFinished do
begin
Sleep(1);
end;
end.
In addition, I did this to suppress message boxes outside Delphi:
program MyIntegrationTests;
...
{$Include FastMM4Options.inc}
uses
FastMM4 in '..\..\..\Shared\FastMM4.pas',
System.Classes,
...;
{$R *.RES}
begin
TThread.NameThreadForDebugging(ParamStr(0));
SuppressMessageBoxes := SuppressMessageBoxes // follow pattern in FastMM4.FinalizeMemoryManager
{$ifdef RequireIDEPresenceForLeakReporting}
and DelphiIsRunning
{$endif}
{$ifdef RequireDebuggerPresenceForLeakReporting}
and ((DebugHook <> 0)
{$ifdef PatchBCBTerminate}
or (Assigned(pCppDebugHook) and (pCppDebugHook^ <> 0))
{$endif PatchBCBTerminate}
)
{$endif}
;
{$WARN SYMBOL_PLATFORM OFF} NoErrMsg := {$WARN SYMBOL_PLATFORM ON} SuppressMessageBoxes; // Set RTL message boxes as well;
...
end.
–jeroen
Posted in Conference Topics, Conferences, Delphi, Development, Event, Software Development | Leave a Comment »
Posted by jpluimers on 2019/02/21
From the geek fun department: [WayBack] IP over Avian Carriers – Wikipedia.
I learned through this slightly after the fight to keep HTTP status code 418 (I’m a teapot) which is part of RFC2324 released on April 1st, 1998.
The IP over Avian Carriers is part of three RFCs, all released on April 1st in various years:
–jeroen
via: Http-statuscode ‘I’m a teapot’ is voorlopig veilig – IT Pro – .Geeks – Tweakers
Posted in Communications Development, Development, Fun, Geeky, HTTP, Internet protocol suite, Software Development, TCP | Leave a Comment »
Posted by jpluimers on 2019/02/20
You can fire a debugger breakpoint using either of these two:
asm int 3 end which is the x86 debug interruptDebugBreak() which is the Windows API function wrapping the above interruptI’m not sure how accurate it is (in the past it would fail under some debuggers other than the Delphi IDE), but as of Delphi 2, there is a DebugHook variable that is non-zero when running under the Delphi debugger, so you can protect your code.
Via [WayBack] I remember some time ago, Jeroen Pluijmers posted a snippet of how to place a breakpoint directly in the Delphi source without relying on the F5 key. – Alberto Paganini – Google+
Related:
–jeroen
Posted in Delphi, Development, Software Development, Windows Development | Leave a Comment »
Posted by jpluimers on 2019/02/20
Cool site if I ever need to decipher C declarations again: [WayBack] cdecl: C gibberish ↔ English.
You can even store the C code as a URL.
via:
–jeroen
Posted in C, Delphi, Development, Software Development | 2 Comments »
Posted by jpluimers on 2019/02/19
Interesting read, especially about the node event-loop which tries to mask it is single threaded by doing cooperative multi-tasking: [WayBack] The Way of the Gopher – Digg Data – Medium – Making the Switch from Node.js to Golang.
It mentions [WayBack] GitHub – gengo/goship: A simple tool for deploying code to servers.
Via: [WayBack] Jonas Bandi on Twitter: “There’s that alarm that goes off in my brain when I read about something being fast and easy and production-level.”
–jeroen
Posted in Development, Go (golang), JavaScript/ECMAScript, Node.js, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2019/02/19
Interesting idea: [WayBack] Delphi component to show some text file at design time
Via: [WayBack] On some projects I put an invisible TMemo on the main form to keep notes about things todo…is there any extension that could attach a kind …could save to … – Paul TOTH – Google+
–jeroen
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2019/02/15
Up until Widows 8.1, you could use wuapp to start the Windows Update panel.
For a while, Windows 10 needed a cumbersome language specific workaround described at Windows 10 – language neutral batch file to start Windows.
That stopped working after a few builds, but I forgot to make a note in which build exactly. Already in Windows 10 build 10122, the icon in wucltux.dll, so this might have been shortly after the initial “RTM” (retroactively named 1507).
So for a while, I had this batch file:
Since then I had to maintain too many locales running Windows 10. So here is the batch file:
for /f "delims=" %%A in ('PowerShell -Command "(Get-Culture).Name"') do explorer "%LocalAppData%\Packages\windows.immersivecontrolpanel_cw5n1h2txyewy\LocalState\Indexed\Settings\%%A\AAA_SystemSettings_MusUpdate_UpdateActionButton.settingcontent-ms"It uses these tricks:
- Set output of a command as a variable (in this case a for loop variable)
- Execute PowerShell script in a .bat file
- PowerShell Get-Culture (which gets a .NET CultureInfo instance)
- CultureInfo.Name property (which has the nl-NL, en-US, etc codes in it)
But now I have extended it to support old and new Windows versions:
if exist %windir%\System32\wuapp.exe ( %windir%\System32\rundll32.exe url.dll,FileProtocolHandler wuapp.exe ) else ( %windir%\explorer ms-settings:windowsupdate )
–jeroen
via: Windows Update Shortcut – Create in Windows 10 – Windows 10 Forums
Posted in Batch-Files, Development, Power User, Scripting, Software Development, Windows | Leave a Comment »
Posted by jpluimers on 2019/02/15
Today, Niklaus Wirth, “father” of The Pascal Programming Language turned 85.
Happy birthday!
Almost 50 years ago, Niklaus Wirth submitted his famous paper “The Programming Language Pascal” which was published early 1971
Luckily it is archived on both the WayBack machine and Archive.is as the only PDF copy I could find on-line isn’t always on-line: http://oberoncore.ru/_media/library/wirth_the_programming_language_pascal.pdf
Originally it was published by Niklaus Wirth in Acta Informatica, Vol. 1, Fasc. 1, 1971 pp. 35-63
He has been very active, just browse through the [WayBack] List of computer science publications by Niklaus Wirth
To celebrate his birthday, here are some interviews with him:
If you like the ones above as much as I do, then search for more: there are plenty!
–jeroen
via: Happy 80th birthday Niklaus Wirth! « The Wiert Corner – irregular stream of stuff
Posted in Delphi, Development, History, Pascal, Software Development | Leave a Comment »
Posted by jpluimers on 2019/02/14
Interesting read [WayBack] Mysterious Case Of Wrong Value.
In order to capture by value (which in C++ you can specify), you need an intermediate function like Dalija describes:
function CreateFunction(Value: Integer): TFunc<Integer>;
begin
Result :=
function: Integer
begin
Result := Value;
end;
end;
Via: [WayBack] Dalija Prasnikar – Google+
–jeroen
Posted in Delphi, Development, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 