wine/dlls/qmgr/enum_jobs.c

214 lines
5.9 KiB
C

/*
* Queue Manager (BITS) Job Enumerator
*
* Copyright 2007 Google (Roy Shea)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "qmgr.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(qmgr);
static void EnumBackgroundCopyJobsDestructor(EnumBackgroundCopyJobsImpl *This)
{
ULONG i;
for(i = 0; i < This->numJobs; i++)
IBackgroundCopyJob_Release(This->jobs[i]);
HeapFree(GetProcessHeap(), 0, This->jobs);
HeapFree(GetProcessHeap(), 0, This);
}
static ULONG WINAPI BITS_IEnumBackgroundCopyJobs_AddRef(
IEnumBackgroundCopyJobs* iface)
{
EnumBackgroundCopyJobsImpl *This = (EnumBackgroundCopyJobsImpl *) iface;
return InterlockedIncrement(&This->ref);
}
static HRESULT WINAPI BITS_IEnumBackgroundCopyJobs_QueryInterface(
IEnumBackgroundCopyJobs* iface,
REFIID riid,
void **ppvObject)
{
EnumBackgroundCopyJobsImpl *This = (EnumBackgroundCopyJobsImpl *) iface;
TRACE("IID: %s\n", debugstr_guid(riid));
if (IsEqualGUID(riid, &IID_IUnknown)
|| IsEqualGUID(riid, &IID_IEnumBackgroundCopyJobs))
{
*ppvObject = &This->lpVtbl;
BITS_IEnumBackgroundCopyJobs_AddRef(iface);
return S_OK;
}
*ppvObject = NULL;
return E_NOINTERFACE;
}
static ULONG WINAPI BITS_IEnumBackgroundCopyJobs_Release(
IEnumBackgroundCopyJobs* iface)
{
EnumBackgroundCopyJobsImpl *This = (EnumBackgroundCopyJobsImpl *) iface;
ULONG ref = InterlockedDecrement(&This->ref);
if (ref == 0)
EnumBackgroundCopyJobsDestructor(This);
return ref;
}
static HRESULT WINAPI BITS_IEnumBackgroundCopyJobs_Next(
IEnumBackgroundCopyJobs* iface,
ULONG celt,
IBackgroundCopyJob **rgelt,
ULONG *pceltFetched)
{
EnumBackgroundCopyJobsImpl *This = (EnumBackgroundCopyJobsImpl *) iface;
ULONG fetched;
ULONG i;
IBackgroundCopyJob *job;
fetched = min(celt, This->numJobs - This->indexJobs);
if (pceltFetched)
*pceltFetched = fetched;
else
{
/* We need to initialize this array if the caller doesn't request
the length because length_is will default to celt. */
for (i = 0; i < celt; ++i)
rgelt[i] = NULL;
/* pceltFetched can only be NULL if celt is 1 */
if (celt != 1)
return E_INVALIDARG;
}
/* Fill in the array of objects */
for (i = 0; i < fetched; ++i)
{
job = This->jobs[This->indexJobs++];
IBackgroundCopyJob_AddRef(job);
rgelt[i] = job;
}
return fetched == celt ? S_OK : S_FALSE;
}
static HRESULT WINAPI BITS_IEnumBackgroundCopyJobs_Skip(
IEnumBackgroundCopyJobs* iface,
ULONG celt)
{
EnumBackgroundCopyJobsImpl *This = (EnumBackgroundCopyJobsImpl *) iface;
if (This->numJobs - This->indexJobs < celt)
{
This->indexJobs = This->numJobs;
return S_FALSE;
}
This->indexJobs += celt;
return S_OK;
}
static HRESULT WINAPI BITS_IEnumBackgroundCopyJobs_Reset(
IEnumBackgroundCopyJobs* iface)
{
EnumBackgroundCopyJobsImpl *This = (EnumBackgroundCopyJobsImpl *) iface;
This->indexJobs = 0;
return S_OK;
}
static HRESULT WINAPI BITS_IEnumBackgroundCopyJobs_Clone(
IEnumBackgroundCopyJobs* iface,
IEnumBackgroundCopyJobs **ppenum)
{
FIXME("Not implemented\n");
return E_NOTIMPL;
}
static HRESULT WINAPI BITS_IEnumBackgroundCopyJobs_GetCount(
IEnumBackgroundCopyJobs* iface,
ULONG *puCount)
{
EnumBackgroundCopyJobsImpl *This = (EnumBackgroundCopyJobsImpl *) iface;
*puCount = This->numJobs;
return S_OK;
}
static const IEnumBackgroundCopyJobsVtbl BITS_IEnumBackgroundCopyJobs_Vtbl =
{
BITS_IEnumBackgroundCopyJobs_QueryInterface,
BITS_IEnumBackgroundCopyJobs_AddRef,
BITS_IEnumBackgroundCopyJobs_Release,
BITS_IEnumBackgroundCopyJobs_Next,
BITS_IEnumBackgroundCopyJobs_Skip,
BITS_IEnumBackgroundCopyJobs_Reset,
BITS_IEnumBackgroundCopyJobs_Clone,
BITS_IEnumBackgroundCopyJobs_GetCount
};
HRESULT EnumBackgroundCopyJobsConstructor(LPVOID *ppObj,
IBackgroundCopyManager* copyManager)
{
BackgroundCopyManagerImpl *qmgr = (BackgroundCopyManagerImpl *) copyManager;
EnumBackgroundCopyJobsImpl *This;
BackgroundCopyJobImpl *job;
ULONG i;
TRACE("%p, %p)\n", ppObj, copyManager);
This = HeapAlloc(GetProcessHeap(), 0, sizeof *This);
if (!This)
return E_OUTOFMEMORY;
This->lpVtbl = &BITS_IEnumBackgroundCopyJobs_Vtbl;
This->ref = 1;
/* Create array of jobs */
This->indexJobs = 0;
EnterCriticalSection(&qmgr->cs);
This->numJobs = list_count(&qmgr->jobs);
if (0 < This->numJobs)
{
This->jobs = HeapAlloc(GetProcessHeap(), 0,
This->numJobs * sizeof *This->jobs);
if (!This->jobs)
{
LeaveCriticalSection(&qmgr->cs);
HeapFree(GetProcessHeap(), 0, This);
return E_OUTOFMEMORY;
}
}
else
This->jobs = NULL;
i = 0;
LIST_FOR_EACH_ENTRY(job, &qmgr->jobs, BackgroundCopyJobImpl, entryFromQmgr)
{
IBackgroundCopyJob *iJob = (IBackgroundCopyJob *) job;
IBackgroundCopyJob_AddRef(iJob);
This->jobs[i++] = iJob;
}
LeaveCriticalSection(&qmgr->cs);
*ppObj = &This->lpVtbl;
return S_OK;
}