56 } vss_ctx;  variable
105     if (vss_ctx.hEventFrozen) {  in requester_cleanup()
106         CloseHandle(vss_ctx.hEventFrozen);  in requester_cleanup()
107         vss_ctx.hEventFrozen = NULL;  in requester_cleanup()
109     if (vss_ctx.hEventThaw) {  in requester_cleanup()
110         CloseHandle(vss_ctx.hEventThaw);  in requester_cleanup()
111         vss_ctx.hEventThaw = NULL;  in requester_cleanup()
113     if (vss_ctx.hEventTimeout) {  in requester_cleanup()
114         CloseHandle(vss_ctx.hEventTimeout);  in requester_cleanup()
115         vss_ctx.hEventTimeout = NULL;  in requester_cleanup()
117     if (vss_ctx.pAsyncSnapshot) {  in requester_cleanup()
118         vss_ctx.pAsyncSnapshot->Release();  in requester_cleanup()
119         vss_ctx.pAsyncSnapshot = NULL;  in requester_cleanup()
121     if (vss_ctx.pVssbc) {  in requester_cleanup()
122         vss_ctx.pVssbc->Release();  in requester_cleanup()
123         vss_ctx.pVssbc = NULL;  in requester_cleanup()
125     vss_ctx.cFrozenVols = 0;  in requester_cleanup()
184     hr = vss_ctx.pVssbc->GetWriterMetadataCount(&cWriters);  in AddComponents()
191         hr = vss_ctx.pVssbc->GetWriterMetadata(i, &id, pMetadata.replace());  in AddComponents()
231                 hr = vss_ctx.pVssbc->AddComponent(idInstance, idWriter,  in AddComponents()
316     if (vss_ctx.pVssbc) { /* already frozen */  in requester_freeze()
331     vss_ctx.hEventFrozen = CreateEvent(&sa, TRUE, FALSE, EVENT_NAME_FROZEN);  in requester_freeze()
332     if (!vss_ctx.hEventFrozen) {  in requester_freeze()
337     vss_ctx.hEventThaw = CreateEvent(&sa, TRUE, FALSE, EVENT_NAME_THAW);  in requester_freeze()
338     if (!vss_ctx.hEventThaw) {  in requester_freeze()
343     vss_ctx.hEventTimeout = CreateEvent(&sa, TRUE, FALSE, EVENT_NAME_TIMEOUT);  in requester_freeze()
344     if (!vss_ctx.hEventTimeout) {  in requester_freeze()
351     hr = pCreateVssBackupComponents(&vss_ctx.pVssbc);  in requester_freeze()
357     hr = vss_ctx.pVssbc->InitializeForBackup();  in requester_freeze()
363     hr = vss_ctx.pVssbc->SetBackupState(true, true, vss_bt, false);  in requester_freeze()
376     hr = vss_ctx.pVssbc->SetContext(ctx);  in requester_freeze()
380         hr = vss_ctx.pVssbc->SetContext(ctx);  in requester_freeze()
387     hr = vss_ctx.pVssbc->GatherWriterMetadata(pAsync.replace());  in requester_freeze()
401     hr = vss_ctx.pVssbc->StartSnapshotSet(&guidSnapshotSet);  in requester_freeze()
418             hr = vss_ctx.pVssbc->AddToSnapshotSet(volume_name_wchar,  in requester_freeze()
447                 hr = vss_ctx.pVssbc->AddToSnapshotSet(short_volume_name,  in requester_freeze()
477     hr = vss_ctx.pVssbc->PrepareForBackup(pAsync.replace());  in requester_freeze()
486     hr = vss_ctx.pVssbc->GatherWriterStatus(pAsync.replace());  in requester_freeze()
501     hr = vss_ctx.pVssbc->DoSnapshotSet(&vss_ctx.pAsyncSnapshot);  in requester_freeze()
509         HRESULT hr2 = vss_ctx.pAsyncSnapshot->QueryStatus(&hr, NULL);  in requester_freeze()
519         wait_status = WaitForSingleObject(vss_ctx.hEventFrozen,  in requester_freeze()
542         *num_vols = vss_ctx.cFrozenVols = num_mount_points;  in requester_freeze()
544         *num_vols = vss_ctx.cFrozenVols = num_fixed_drives;  in requester_freeze()
551     if (vss_ctx.pVssbc) {  in requester_freeze()
552         vss_ctx.pVssbc->AbortBackup();  in requester_freeze()
568     if (!vss_ctx.hEventThaw) {  in requester_thaw()
580     SetEvent(vss_ctx.hEventThaw);  in requester_thaw()
582     assert(vss_ctx.pVssbc);  in requester_thaw()
583     assert(vss_ctx.pAsyncSnapshot);  in requester_thaw()
585     HRESULT hr = WaitForAsync(vss_ctx.pAsyncSnapshot);  in requester_thaw()
588         hr = vss_ctx.pVssbc->BackupComplete(pAsync.replace());  in requester_thaw()
605         vss_ctx.pVssbc->AbortBackup();  in requester_thaw()
609         if (WaitForSingleObject(vss_ctx.hEventTimeout, 0) != WAIT_OBJECT_0) {  in requester_thaw()
625         vss_ctx.pVssbc->AbortBackup();  in requester_thaw()
627     *num_vols = vss_ctx.cFrozenVols;  in requester_thaw()