reactos/dll/win32/qmgr/qmgr.c

   1 /*
   2  * Queue Manager (BITS) core functions
   3  *
   4  * Copyright 2007, 2008 Google (Roy Shea, Dan Hipschman)
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "qmgr.h"
  22
  23 BackgroundCopyManagerImpl globalMgr;
  24
  25 static HRESULT WINAPI BITS_IBackgroundCopyManager_QueryInterface(IBackgroundCopyManager *iface,
  26         REFIID riid, void **ppv)
  27 {
  28     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(riid), ppv);
  29
  30     if (IsEqualGUID(riid, &IID_IUnknown) || IsEqualGUID(riid, &IID_IBackgroundCopyManager))
  31     {
  32         *ppv = iface;
  33         IBackgroundCopyManager_AddRef(iface);
  34         return S_OK;
  35     }
  36
  37     *ppv = NULL;
  38     return E_NOINTERFACE;
  39 }
  40
  41 static ULONG WINAPI BITS_IBackgroundCopyManager_AddRef(IBackgroundCopyManager *iface)
  42 {
  43     return 2;
  44 }
  45
  46 static ULONG WINAPI BITS_IBackgroundCopyManager_Release(IBackgroundCopyManager *iface)
  47 {
  48     return 1;
  49 }
  50
  51 /*** IBackgroundCopyManager interface methods ***/
  52
  53 static HRESULT WINAPI BITS_IBackgroundCopyManager_CreateJob(IBackgroundCopyManager *iface,
  54         LPCWSTR DisplayName, BG_JOB_TYPE Type, GUID *pJobId, IBackgroundCopyJob **ppJob)
  55 {
  56     BackgroundCopyJobImpl *job;
  57     HRESULT hres;
  58     TRACE("\n");
  59
  60     hres = BackgroundCopyJobConstructor(DisplayName, Type, pJobId, &job);
  61     if (FAILED(hres))
  62         return hres;
  63
  64     /* Add a reference to the job to job list */
  65     *ppJob = (IBackgroundCopyJob*)&job->IBackgroundCopyJob2_iface;
  66     IBackgroundCopyJob_AddRef(*ppJob);
  67     EnterCriticalSection(&globalMgr.cs);
  68     list_add_head(&globalMgr.jobs, &job->entryFromQmgr);
  69     LeaveCriticalSection(&globalMgr.cs);
  70     return S_OK;
  71 }
  72
  73 static HRESULT WINAPI BITS_IBackgroundCopyManager_GetJob(IBackgroundCopyManager *iface,
  74         REFGUID jobID, IBackgroundCopyJob **ppJob)
  75 {
  76     FIXME("Not implemented\n");
  77     return E_NOTIMPL;
  78 }
  79
  80 static HRESULT WINAPI BITS_IBackgroundCopyManager_EnumJobs(IBackgroundCopyManager *iface,
  81         DWORD dwFlags, IEnumBackgroundCopyJobs **ppEnum)
  82 {
  83     TRACE("\n");
  84     return enum_copy_job_create(&globalMgr, ppEnum);
  85 }
  86
  87 static HRESULT WINAPI BITS_IBackgroundCopyManager_GetErrorDescription(IBackgroundCopyManager *iface,
  88         HRESULT hResult, DWORD LanguageId, LPWSTR *pErrorDescription)
  89 {
  90     FIXME("Not implemented\n");
  91     return E_NOTIMPL;
  92 }
  93
  94
  95 static const IBackgroundCopyManagerVtbl BITS_IBackgroundCopyManager_Vtbl =
  96 {
  97     BITS_IBackgroundCopyManager_QueryInterface,
  98     BITS_IBackgroundCopyManager_AddRef,
  99     BITS_IBackgroundCopyManager_Release,
 100     BITS_IBackgroundCopyManager_CreateJob,
 101     BITS_IBackgroundCopyManager_GetJob,
 102     BITS_IBackgroundCopyManager_EnumJobs,
 103     BITS_IBackgroundCopyManager_GetErrorDescription
 104 };
 105
 106 BackgroundCopyManagerImpl globalMgr = {
 107     { &BITS_IBackgroundCopyManager_Vtbl },
 108     { NULL, -1, 0, 0, 0, 0 },
 109     NULL,
 110     LIST_INIT(globalMgr.jobs)
 111 };
 112
 113 /* Constructor for instances of background copy manager */
 114 HRESULT BackgroundCopyManagerConstructor(IUnknown *pUnkOuter, LPVOID *ppObj)
 115 {
 116     TRACE("(%p,%p)\n", pUnkOuter, ppObj);
 117     *ppObj = &globalMgr;
 118     return S_OK;
 119 }
 120
 121 DWORD WINAPI fileTransfer(void *param)
 122 {
 123     BackgroundCopyManagerImpl *qmgr = &globalMgr;
 124     HANDLE events[2];
 125
 126     events[0] = stop_event;
 127     events[1] = qmgr->jobEvent;
 128
 129     for (;;)
 130     {
 131         BackgroundCopyJobImpl *job, *jobCur;
 132         BOOL haveJob = FALSE;
 133
 134         /* Check if it's the stop_event */
 135         if (WaitForMultipleObjects(2, events, FALSE, INFINITE) == WAIT_OBJECT_0)
 136         {
 137             LIST_FOR_EACH_ENTRY_SAFE(job, jobCur, &qmgr->jobs, BackgroundCopyJobImpl, entryFromQmgr)
 138             {
 139                 list_remove(&job->entryFromQmgr);
 140                 IBackgroundCopyJob2_Release(&job->IBackgroundCopyJob2_iface);
 141             }
 142             return 0;
 143         }
 144
 145         /* Note that other threads may add files to the job list, but only
 146            this thread ever deletes them so we don't need to worry about jobs
 147            magically disappearing from the list.  */
 148         EnterCriticalSection(&qmgr->cs);
 149
 150         LIST_FOR_EACH_ENTRY_SAFE(job, jobCur, &qmgr->jobs, BackgroundCopyJobImpl, entryFromQmgr)
 151         {
 152             if (job->state == BG_JOB_STATE_ACKNOWLEDGED || job->state == BG_JOB_STATE_CANCELLED)
 153             {
 154                 list_remove(&job->entryFromQmgr);
 155                 IBackgroundCopyJob2_Release(&job->IBackgroundCopyJob2_iface);
 156             }
 157             else if (job->state == BG_JOB_STATE_QUEUED)
 158             {
 159                 haveJob = TRUE;
 160                 break;
 161             }
 162             else if (job->state == BG_JOB_STATE_CONNECTING
 163                      || job->state == BG_JOB_STATE_TRANSFERRING)
 164             {
 165                 ERR("Invalid state for job %p: %d\n", job, job->state);
 166             }
 167         }
 168
 169         if (!haveJob)
 170             ResetEvent(qmgr->jobEvent);
 171
 172         LeaveCriticalSection(&qmgr->cs);
 173
 174         if (haveJob)
 175             processJob(job);
 176     }
 177 }