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ew8bakandClaude Sonnet 4.6
83ec28f997
Add PowerInhibit.pas with InhibitSleep/UninhibitSleep: - Windows: SetThreadExecutionState (kernel32, no child process) - macOS: caffeinate -d -i -s -w <PID> (auto-exits on crash via -w flag) - Linux: systemd-inhibit with kill-0 poll loop (releases within 5s on crash) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
110 lines
3.0 KiB
ObjectPascal
110 lines
3.0 KiB
ObjectPascal
unit PowerInhibit;
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{$IFDEF FPC}
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{$MODE Delphi}
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{$ENDIF}
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{
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Prevents OS idle sleep and display blanking while the SDR is running.
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Windows : SetThreadExecutionState (kernel32) — one call, no child process.
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macOS : spawns /usr/bin/caffeinate -d -i -s -w <OurPID>
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caffeinate exits automatically when our process exits (crash-safe).
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Linux : spawns systemd-inhibit in --mode=block with a shell loop that
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polls kill -0 <OurPID> so the inhibitor is released within
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~5 s even on a crash (no orphan leak).
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}
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interface
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procedure InhibitSleep;
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procedure UninhibitSleep;
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implementation
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uses
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SysUtils, Process
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{$IFDEF WINDOWS}, Windows{$ENDIF};
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{$IFDEF WINDOWS}
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type
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EXECUTION_STATE = DWORD;
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const
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ES_CONTINUOUS = DWORD($80000000);
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ES_SYSTEM_REQUIRED = DWORD($00000001);
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ES_DISPLAY_REQUIRED = DWORD($00000002);
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function SetThreadExecutionState(esFlags: EXECUTION_STATE): EXECUTION_STATE; stdcall;
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external 'kernel32.dll' name 'SetThreadExecutionState';
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{$ENDIF}
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var
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FInhibitProc: TProcess = nil;
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procedure InhibitSleep;
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{$IF DEFINED(DARWIN) OR DEFINED(LINUX)}
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var
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PidStr: string;
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{$ENDIF}
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begin
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{$IFDEF WINDOWS}
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SetThreadExecutionState(ES_CONTINUOUS or ES_SYSTEM_REQUIRED or ES_DISPLAY_REQUIRED);
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{$ENDIF}
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{$IF DEFINED(DARWIN) OR DEFINED(LINUX)}
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if FInhibitProc <> nil then Exit;
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PidStr := IntToStr(GetProcessID);
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FInhibitProc := TProcess.Create(nil);
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try
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{$IFDEF DARWIN}
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FInhibitProc.Executable := '/usr/bin/caffeinate';
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FInhibitProc.Parameters.Add('-d'); // prevent display sleep
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FInhibitProc.Parameters.Add('-i'); // prevent idle sleep
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FInhibitProc.Parameters.Add('-s'); // prevent system sleep (AC power)
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FInhibitProc.Parameters.Add('-w'); // watch our PID — caffeinate auto-exits with us
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FInhibitProc.Parameters.Add(PidStr);
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{$ENDIF}
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{$IFDEF LINUX}
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// systemd-inhibit holds the lock until the sh loop exits.
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// The loop polls kill -0 <PID> every 5 s, so if we crash the
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// inhibitor is released within 5 s (no orphan process leak).
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FInhibitProc.Executable := 'systemd-inhibit';
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FInhibitProc.Parameters.Add('--what=idle:sleep:handle-lid-switch');
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FInhibitProc.Parameters.Add('--why=SDR running');
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FInhibitProc.Parameters.Add('--who=ewsdr');
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FInhibitProc.Parameters.Add('--mode=block');
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FInhibitProc.Parameters.Add('sh');
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FInhibitProc.Parameters.Add('-c');
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FInhibitProc.Parameters.Add('while kill -0 ' + PidStr + ' 2>/dev/null; do sleep 5; done');
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{$ENDIF}
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FInhibitProc.Options := [poNoConsole];
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FInhibitProc.Execute;
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except
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FreeAndNil(FInhibitProc);
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end;
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{$ENDIF}
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end;
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procedure UninhibitSleep;
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begin
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{$IFDEF WINDOWS}
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SetThreadExecutionState(ES_CONTINUOUS);
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{$ENDIF}
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{$IF DEFINED(DARWIN) OR DEFINED(LINUX)}
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if FInhibitProc <> nil then
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begin
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if FInhibitProc.Running then
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FInhibitProc.Terminate(0);
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FreeAndNil(FInhibitProc);
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end;
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{$ENDIF}
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end;
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initialization
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FInhibitProc := nil;
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finalization
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UninhibitSleep;
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end.
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