901 if (ext>=0) |
901 if (ext>=0) |
902 return ext; |
902 return ext; |
903 } |
903 } |
904 return ::ExtentL(Host(),iMark,Coord().Base(),aStream); |
904 return ::ExtentL(Host(),iMark,Coord().Base(),aStream); |
905 } |
905 } |
906 |
906 |
907 /* relocate a stream into [iFree, aExtent) |
907 /* relocate a stream into [iFree, aExtent) |
908 |
908 |
909 During compaction, for each string which is to be moved from position A1 to B1, the sequence of operations is: |
909 During compaction, for each string which is to be moved from position A1 to B1, the sequence of operations is: |
910 |
910 |
911 1. Copy stream S1 content from position A1 to position B1 . The copy never overlaps so the old stream content is still good at this point. |
911 1. Copy stream S1 content from position A1 to position B1 . The copy never overlaps so the old stream content is still good at this point. |
940 |
940 |
941 Based on the knowledge above, it is strongly recommended to set EFileWriteDirectIO bit when opening the file so that the order is maintained |
941 Based on the knowledge above, it is strongly recommended to set EFileWriteDirectIO bit when opening the file so that the order is maintained |
942 when writing to the file. |
942 when writing to the file. |
943 */ |
943 */ |
944 void CPermanentStoreCollector::RelocateStreamL(const CPermanentStoreCollector::TEntry& aReloc, TInt aExtent) |
944 void CPermanentStoreCollector::RelocateStreamL(const CPermanentStoreCollector::TEntry& aReloc, TInt aExtent) |
|
945 |
945 { |
946 { |
946 if (Coord().Accessed()) // must have exclusive access to relocate the stream |
947 if (Coord().Accessed()) // must have exclusive access to relocate the stream |
947 __LEAVE(KErrInUse); |
948 __LEAVE(KErrInUse); |
948 // |
949 // |
949 TInt end=RelocateL(aReloc.entry.ref,aReloc.len,aReloc.entry.handle == KHandleTocBase ? EFrameDescriptive16 : EFrameData16, aExtent); |
950 TInt end=RelocateL(aReloc.entry.ref,aReloc.len,aReloc.entry.handle == KHandleTocBase ? EFrameDescriptive16 : EFrameData16, aExtent); |
950 //Step 1, 4,.... |
951 //Step 1 |
951 Coord().RelocateL(aReloc.entry.handle, iFree); |
952 Coord().RelocateL(aReloc.entry.handle, iFree); |
952 // Step 2 & 3, 5 & 6,... |
953 // Step 2 & 3 |
953 iCoordGen=Coord().Generation(); // changed by relocation |
954 iCoordGen=Coord().Generation(); // changed by relocation |
954 iFree = end; |
955 iFree = end; |
955 } |
956 } |
956 |
957 |
957 TInt CPermanentStoreCollector::RelocateL(TInt aStream, TInt aLength, TFrameType16 aType, TInt aExtent) |
958 TInt CPermanentStoreCollector::RelocateL(TInt aStream, TInt aLength, TFrameType16 aType, TInt aExtent) |