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Added two optional properties to GlobalCEFApp to wait for the child processes before shutting down.

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Added GlobalCEFApp.WaitForChildProcesses and GlobalCEFApp.WaitTime.
This commit is contained in:
Salvador Díaz Fau 2018-02-10 18:53:22 +01:00
parent 63748c2639
commit 28bf09272d
2 changed files with 116 additions and 18 deletions
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packages/CEF4Delphi_FMX.res
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source/uCEFApplication.pas
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@ -72,6 +72,8 @@ type
TCefApplication = class
protected
FMustShutDown : boolean;
FWaitForChildProcesses : boolean;
FWaitTime : cardinal;
FCache : ustring;
FCookies : ustring;
FUserDataPath : ustring;
@ -162,6 +164,10 @@ type
FOnFocusedNodeChanged : TOnFocusedNodeChangedEvent;
FOnProcessMessageReceived : TOnProcessMessageReceivedEvent;
procedure DestroyResourceBundleHandler;
procedure DestroyBrowserProcessHandler;
procedure DestroyRenderProcessHandler;
procedure SetFrameworkDirPath(const aValue : ustring);
procedure SetResourcesDirPath(const aValue : ustring);
procedure SetLocalesDirPath(const aValue : ustring);
@ -232,13 +238,14 @@ type
function FindFlashDLL(var aFileName : string) : boolean;
procedure ShowErrorMessageDlg(const aError : string); virtual;
function ParseProcessType : TCefProcessType;
procedure RemoveAppReferences;
procedure CreateAppHandlers;
procedure EnumerateAndWaitForChildProcesses;
public
constructor Create;
destructor Destroy; override;
procedure AfterConstruction; override;
procedure BeforeDestruction; override;
procedure AddCustomCommandLine(const aCommandLine : string; const aValue : string = '');
function StartMainProcess : boolean;
function StartSubProcess : boolean;
@ -348,6 +355,8 @@ type
property OsmodalLoop : boolean write SetOsmodalLoop;
property Status : TCefAplicationStatus read FStatus;
property MissingLibFiles : string read FMissingLibFiles;
property WaitForChildProcesses : boolean read FWaitForChildProcesses write FWaitForChildProcesses;
property WaitTime : cardinal read FWaitTime write FWaitTime;
property OnRegCustomSchemes : TOnRegisterCustomSchemes read FOnRegisterCustomSchemes write FOnRegisterCustomSchemes;
@ -382,9 +391,9 @@ implementation
uses
{$IFDEF DELPHI16_UP}
System.Math, System.IOUtils, System.SysUtils,
System.Math, System.IOUtils, System.SysUtils, {$IFDEF MSWINDOWS}WinApi.TlHelp32,{$ENDIF}
{$ELSE}
Math, {$IFDEF DELPHI14_UP}IOUtils,{$ENDIF} SysUtils,
Math, {$IFDEF DELPHI14_UP}IOUtils,{$ENDIF} SysUtils, {$IFDEF MSWINDOWS}TlHelp32,{$ENDIF}
{$ENDIF}
uCEFLibFunctions, uCEFMiscFunctions, uCEFCommandLine, uCEFConstants,
uCEFSchemeHandlerFactory, uCEFCookieManager, uCEFApp,
@ -398,6 +407,8 @@ begin
FMissingLibFiles := '';
FLibHandle := 0;
FMustShutDown := False;
FWaitForChildProcesses := True;
FWaitTime := 5000;
FCache := '';
FCookies := '';
FUserDataPath := '';
@ -501,9 +512,11 @@ end;
destructor TCefApplication.Destroy;
begin
if FMustShutDown then ShutDown;
RemoveAppReferences;
if FMustShutDown then
begin
if FWaitForChildProcesses then EnumerateAndWaitForChildProcesses;
ShutDown;
end;
if (FLibHandle <> 0) then
begin
@ -520,18 +533,6 @@ begin
inherited Destroy;
end;
procedure TCefApplication.RemoveAppReferences;
begin
try
if (FResourceBundleHandler <> nil) then FResourceBundleHandler.RemoveReferences;
if (FBrowserProcessHandler <> nil) then FBrowserProcessHandler.RemoveReferences;
if (FRenderProcessHandler <> nil) then FRenderProcessHandler.RemoveReferences;
except
on e : exception do
if CustomExceptionHandler('TCefApplication.RemoveAppReferences', e) then raise;
end;
end;
procedure TCefApplication.AfterConstruction;
begin
inherited AfterConstruction;
@ -540,6 +541,57 @@ begin
FCustomCommandLineValues := TStringList.Create;
end;
procedure TCefApplication.BeforeDestruction;
begin
DestroyResourceBundleHandler;
DestroyBrowserProcessHandler;
DestroyRenderProcessHandler;
inherited BeforeDestruction;
end;
procedure TCefApplication.DestroyResourceBundleHandler;
begin
try
if (FResourceBundleHandler <> nil) then
begin
FResourceBundleHandler.RemoveReferences;
FResourceBundleHandler := nil;
end;
except
on e : exception do
if CustomExceptionHandler('TCefApplication.DestroyResourceBundleHandler', e) then raise;
end;
end;
procedure TCefApplication.DestroyBrowserProcessHandler;
begin
try
if (FBrowserProcessHandler <> nil) then
begin
FBrowserProcessHandler.RemoveReferences;
FBrowserProcessHandler := nil;
end;
except
on e : exception do
if CustomExceptionHandler('TCefApplication.DestroyBrowserProcessHandler', e) then raise;
end;
end;
procedure TCefApplication.DestroyRenderProcessHandler;
begin
try
if (FRenderProcessHandler <> nil) then
begin
FRenderProcessHandler.RemoveReferences;
FRenderProcessHandler := nil;
end;
except
on e : exception do
if CustomExceptionHandler('TCefApplication.DestroyRenderProcessHandler', e) then raise;
end;
end;
procedure TCefApplication.AddCustomCommandLine(const aCommandLine, aValue : string);
begin
if (FCustomCommandLines <> nil) then FCustomCommandLines.Add(aCommandLine);
@ -1015,6 +1067,52 @@ begin
FRenderProcessHandler := TCefCustomRenderProcessHandler.Create(self);
end;
procedure TCefApplication.EnumerateAndWaitForChildProcesses;
{$IFDEF MSWINDOWS}
var
TempHandle : THandle;
TempProcess : TProcessEntry32;
TempArray : array [0 .. pred(MAXIMUM_WAIT_OBJECTS)] of THandle;
TempPID : DWORD;
i : integer;
TempMain, TempSubProc, TempName : string;
{$ENDIF}
begin
{$IFDEF MSWINDOWS}
for i := 0 to pred(MAXIMUM_WAIT_OBJECTS) do TempArray[i] := 0;
TempHandle := CreateToolHelp32SnapShot(TH32CS_SNAPPROCESS, 0);
TempProcess.dwSize := Sizeof(TProcessEntry32);
TempPID := GetCurrentProcessID;
TempMain := ExtractFileName(paramstr(0));
TempSubProc := ExtractFileName(FBrowserSubprocessPath);
Process32First(TempHandle, TempProcess);
i := 0;
repeat
if (TempProcess.th32ProcessID <> TempPID) and
(TempProcess.th32ParentProcessID = TempPID) then
begin
TempName := TempProcess.szExeFile;
TempName := ExtractFileName(TempName);
if (CompareText(TempName, TempMain) = 0) or
((length(TempSubProc) > 0) and (CompareText(TempName, TempSubProc) = 0)) then
begin
TempArray[i] := TempProcess.th32ProcessID;
inc(i);
end;
end;
until not(Process32Next(TempHandle, TempProcess)) or (i = MAXIMUM_WAIT_OBJECTS);
CloseHandle(TempHandle);
if (i > 0) then
WaitForMultipleObjects(i, @TempArray, True, FWaitTime);
{$ENDIF}
end;
procedure TCefApplication.Internal_OnContextInitialized;
begin
InitializeCookies;