call_in_appdomain Function

2021-08-03

Executes a function in a specified application ___domain.

Syntax

template <typename ArgType1, ...typename ArgTypeN>
void call_in_appdomain(
   DWORD appdomainId,
   void (*voidFunc)(ArgType1, ...ArgTypeN) [ ,
   ArgType1 arg1,
   ...
   ArgTypeN argN ]
);
template <typename RetType, typename ArgType1, ...typename ArgTypeN>
RetType call_in_appdomain(
   DWORD appdomainId,
   RetType (*nonvoidFunc)(ArgType1, ...ArgTypeN) [ ,
   ArgType1 arg1,
   ...
   ArgTypeN argN ]
);

Parameters

appdomainId
The appdomain in which to call the function.

voidFunc
Pointer to a void function that takes N parameters (0 <= N <= 15).

nonvoidFunc
Pointer to a non-void function that takes N parameters (0 <= N <= 15).

arg1...argN
Zero to 15 parameters to be passed to voidFunc or nonvoidFunc in the other appdomain.

Return Value

The result of executing voidFunc or nonvoidFunc in the specified application ___domain.

Remarks

The arguments of the function passed to call_in_appdomain must not be CLR types.

Example

// msl_call_in_appdomain.cpp
// compile with: /clr

// Defines two functions: one takes a parameter and returns nothing,
// the other takes no parameters and returns an int.  Calls both
// functions in the default appdomain and in a newly-created
// application ___domain using call_in_appdomain.

#include <msclr\appdomain.h>

using namespace System;
using namespace msclr;

void PrintCurrentDomainName( char* format )
{
   String^ s = gcnew String(format);
   Console::WriteLine( s, AppDomain::CurrentDomain->FriendlyName );
}

int GetDomainId()
{
   return AppDomain::CurrentDomain->Id;
}

int main()
{
   AppDomain^ appDomain1 = AppDomain::CreateDomain( "First Domain" );

   call_in_appdomain( AppDomain::CurrentDomain->Id,
                   &PrintCurrentDomainName,
                   (char*)"default appdomain: {0}" );
   call_in_appdomain( appDomain1->Id,
                   &PrintCurrentDomainName,
                   (char*)"in appDomain1: {0}" );

   int id;
   id = call_in_appdomain( AppDomain::CurrentDomain->Id, &GetDomainId );
   Console::WriteLine( "default appdomain id = {0}", id );
   id = call_in_appdomain( appDomain1->Id, &GetDomainId );
   Console::WriteLine( "appDomain1 id = {0}", id );
}

Output

default appdomain: msl_call_in_appdomain.exe
in appDomain1: First Domain
default appdomain id = 1
appDomain1 id = 2

Requirements

Header file <msclr\appdomain.h>

Namespace msclr

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