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ole32: Reuse event handles used for COM calls. 

This reduces the number of server calls during a COM call by half.
oldstable
Robert Shearman 2006-06-17 12:31:44 +01:00 committed by Alexandre Julliard
parent af994f4e4f
commit aa09031c78
1 changed files with 23 additions and 2 deletions
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25
dlls/ole32/rpc.c
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@ -100,6 +100,7 @@ typedef struct
OXID oxid; /* apartment in which the channel is valid */
DWORD dest_context; /* returned from GetDestCtx */
LPVOID dest_context_data; /* returned from GetDestCtx */
HANDLE event; /* cached event handle */
} ClientRpcChannelBuffer;
struct dispatch_params
@ -152,6 +153,7 @@ static ULONG WINAPI ClientRpcChannelBuffer_Release(LPRPCCHANNELBUFFER iface)
if (ref)
return ref;
if (This->event) CloseHandle(This->event);
RpcBindingFree(&This->bind);
HeapFree(GetProcessHeap(), 0, This);
return 0;
@ -207,6 +209,24 @@ static HRESULT WINAPI ServerRpcChannelBuffer_SendReceive(LPRPCCHANNELBUFFER ifac
return E_NOTIMPL;
}
static HANDLE ClientRpcChannelBuffer_GetEventHandle(ClientRpcChannelBuffer *This)
{
HANDLE event = InterlockedExchangePointer(&This->event, NULL);
/* Note: must be auto-reset event so we can reuse it without a call
* to ResetEvent */
if (!event) event = CreateEventW(NULL, FALSE, FALSE, NULL);
return event;
}
static void ClientRpcChannelBuffer_ReleaseEventHandle(ClientRpcChannelBuffer *This, HANDLE event)
{
if (InterlockedCompareExchangePointer(&This->event, event, NULL))
/* already a handle cached in This */
CloseHandle(event);
}
/* this thread runs an outgoing RPC */
static DWORD WINAPI rpc_sendreceive_thread(LPVOID param)
{
@ -271,7 +291,7 @@ static HRESULT WINAPI ClientRpcChannelBuffer_SendReceive(LPRPCCHANNELBUFFER ifac
RpcBindingInqObject(msg->Handle, &ipid);
hr = ipid_get_dispatch_params(&ipid, &apt, &params->stub, &params->chan);
params->handle = CreateEventW(NULL, FALSE, FALSE, NULL);
params->handle = ClientRpcChannelBuffer_GetEventHandle(This);
if ((hr == S_OK) && !apt->multi_threaded)
{
TRACE("Calling apartment thread 0x%08lx...\n", apt->tid);
@ -315,7 +335,7 @@ static HRESULT WINAPI ClientRpcChannelBuffer_SendReceive(LPRPCCHANNELBUFFER ifac
if (WaitForSingleObject(params->handle, 0))
hr = CoWaitForMultipleHandles(0, INFINITE, 1, &params->handle, &index);
}
CloseHandle(params->handle);
ClientRpcChannelBuffer_ReleaseEventHandle(This, params->handle);
if (hr == S_OK) hr = params->hr;
@ -478,6 +498,7 @@ HRESULT RPC_CreateClientChannel(const OXID *oxid, const IPID *ipid,
apartment_getoxid(COM_CurrentApt(), &This->oxid);
This->dest_context = dest_context;
This->dest_context_data = dest_context_data;
This->event = NULL;
*chan = (IRpcChannelBuffer*)This;