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#include "hdr/modern_commonheaders.h"
#include "hdr/modern_sync.h"
typedef struct tagSYNCCALLITEM
{
WPARAM wParam;
LPARAM lParam;
int nResult;
HANDLE hDoneEvent;
PSYNCCALLBACKPROC pfnProc;
} SYNCCALLITEM;
static void CALLBACK _SyncCallerUserAPCProc(ULONG_PTR dwParam)
{
SYNCCALLITEM* item = (SYNCCALLITEM*) dwParam;
item->nResult = item->pfnProc(item->wParam, item->lParam);
SetEvent(item->hDoneEvent);
}
static INT_PTR SyncCaller(WPARAM proc, LPARAM lParam)
{
typedef int (*P0PARAMFUNC)();
typedef int (*P1PARAMFUNC)(WPARAM);
typedef int (*P2PARAMFUNC)(WPARAM, LPARAM);
typedef int (*P3PARAMFUNC)(WPARAM, LPARAM, LPARAM);
typedef int (*P4PARAMFUNC)(WPARAM, LPARAM, LPARAM, LPARAM);
LPARAM * params = (LPARAM *)lParam;
int count = params[0];
switch (count)
{
case 0:
{
P0PARAMFUNC pfnProc = (P0PARAMFUNC)proc;
return pfnProc();
}
case 1:
{
P1PARAMFUNC pfnProc = (P1PARAMFUNC)proc;
return pfnProc((WPARAM)params[1]);
}
case 2:
{
P2PARAMFUNC pfnProc = (P2PARAMFUNC)proc;
return pfnProc((WPARAM)params[1],(LPARAM)params[2]);
}
case 3:
{
P3PARAMFUNC pfnProc = (P3PARAMFUNC)proc;
return pfnProc((WPARAM)params[1],(LPARAM)params[2], (LPARAM)params[3]);
}
case 4:
{
P4PARAMFUNC pfnProc = (P4PARAMFUNC)proc;
return pfnProc((WPARAM)params[1],(LPARAM)params[2], (LPARAM)params[3], (LPARAM)params[4]);
}
}
return 0;
}
int SyncCall(void * vproc, int count, ... )
{
LPARAM params[5];
va_list va;
int i;
params[0] = (LPARAM)count;
va_start(va, count);
for (i=0; i < count && i < SIZEOF(params)-1; i++)
{
params[i+1] = va_arg(va,LPARAM);
}
va_end(va);
return SyncCallProxy(SyncCaller, (WPARAM)vproc, (LPARAM) params);
}
int SyncCallProxy(PSYNCCALLBACKPROC pfnProc, WPARAM wParam, LPARAM lParam, CRITICAL_SECTION * cs /*= NULL */)
{
SYNCCALLITEM item = {0};
int nReturn = 0;
if ( cs != NULL )
{
if ( !fnTryEnterCriticalSection ) // for poor OSes like Win98
{
EnterCriticalSection( cs );
int result = pfnProc( wParam, lParam );
LeaveCriticalSection( cs );
return result;
}
if ( fnTryEnterCriticalSection( cs ))
{ //simple call (Fastest)
int result = pfnProc(wParam,lParam);
LeaveCriticalSection( cs );
return result;
}
else
{ //Window SendMessage Call(Middle)
if ( SyncCallWinProcProxy( pfnProc, wParam, lParam, nReturn ) == S_OK)
return nReturn;
}
}
if ( SyncCallAPCProxy( pfnProc, wParam, lParam, nReturn ) == S_OK)
return nReturn;
return NULL;
}
HRESULT SyncCallWinProcProxy( PSYNCCALLBACKPROC pfnProc, WPARAM wParam, LPARAM lParam, int& nReturn )
{
nReturn = 0;
if (pcli->hwndContactList == NULL )
return E_FAIL;
SYNCCALLITEM item = {0};
item.wParam = wParam;
item.lParam = lParam;
item.pfnProc = pfnProc;
nReturn = SendMessage(pcli->hwndContactList, UM_SYNCCALL, (WPARAM)&item,0);
return S_OK;
}
HRESULT SyncCallAPCProxy( PSYNCCALLBACKPROC pfnProc, WPARAM wParam, LPARAM lParam, int& hReturn )
{
hReturn = 0;
if (g_hMainThread == NULL || pfnProc == NULL)
return E_FAIL;
SYNCCALLITEM item = {0};
if (GetCurrentThreadId() != g_dwMainThreadID)
{
item.wParam = wParam;
item.lParam = lParam;
item.pfnProc = pfnProc;
item.hDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
QueueUserAPC(_SyncCallerUserAPCProc, g_hMainThread, (ULONG_PTR) &item);
PostMessage(pcli->hwndContactList,WM_NULL,0,0); // let this get processed in its own time
WaitForSingleObject(item.hDoneEvent, INFINITE);
CloseHandle(item.hDoneEvent);
hReturn = item.nResult;
return S_OK;
}
/* else */
hReturn = pfnProc(wParam, lParam);
return S_OK;
}
LRESULT SyncOnWndProcCall( WPARAM wParam )
{
SYNCCALLITEM *psci = (SYNCCALLITEM *)wParam;
if (psci)
return psci->pfnProc( psci->wParam, psci->lParam );
return 0;
}
int DoCall( PSYNCCALLBACKPROC pfnProc, WPARAM wParam, LPARAM lParam )
{
return SyncCallProxy( pfnProc, 0, lParam );
}
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