71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
|
/******************************************************
|
||
|
|
*
|
||
|
|
* uDictP.h
|
||
|
|
*
|
||
|
|
* Private dclartaions involving the user dictionary
|
||
|
|
*
|
||
|
|
*****************************************************/
|
||
|
|
|
||
|
|
#ifndef H_UDICTP_H
|
||
|
|
#define H_UDICTP_H
|
||
|
|
|
||
|
|
|
||
|
|
#define NO_LINK (-1) // Offset value use when no valid link.
|
||
|
|
|
||
|
|
// User dictionary Flags.
|
||
|
|
#define UDF_VALID 0x0001 // End of valid word.
|
||
|
|
#define UDF_HAS_TAG 0x0002 // Tag information stored for this node.
|
||
|
|
#define UDF_IS_TAG 0x0004 // Tag information, is NOT normal node.
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C"
|
||
|
|
{
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// Node in user dictionary.
|
||
|
|
typedef struct tagNODE {
|
||
|
|
wchar_t wchLabel; // Character label of node
|
||
|
|
WORD flags; // Node flags.
|
||
|
|
int iDown; // Index of down node.
|
||
|
|
union {
|
||
|
|
int iRight; // Index of right node.
|
||
|
|
const wchar_t *pTag; // Pointer to tag info.
|
||
|
|
} uu;
|
||
|
|
} NODE;
|
||
|
|
|
||
|
|
typedef enum tagUDICT_IDX {READER=1, WRITER} UDICT_IDX; // Identifer if I am a reader or writer of the XWL
|
||
|
|
|
||
|
|
// The header structure for the user dictionary.
|
||
|
|
// June 2001. Implement read/write locking to protect
|
||
|
|
// multiple thread access as in the following table:
|
||
|
|
// Read Access Write Access
|
||
|
|
// Reading Yes No
|
||
|
|
// Writing No No
|
||
|
|
//
|
||
|
|
typedef struct tagUDICT {
|
||
|
|
NODE *pNodeAlloc; // Allocated array of nodes.
|
||
|
|
int cNodes; // Count of allocated nodes in array.
|
||
|
|
int cNodesUsed; // Count of nodes used in array.
|
||
|
|
int iFreeList; // Offset of first item in free list.
|
||
|
|
int iRoot; // Offset of root of trie.
|
||
|
|
BOOL bIsChanged; // True if dictionary has changed since last save
|
||
|
|
int iLen; // Amount of space needed to save all the words in the dictionary
|
||
|
|
int cReadLock; // Number of read locks on to prevent write updates during a read
|
||
|
|
HANDLE hReadLockEvent; // Signal reading of the User dictiionary
|
||
|
|
HANDLE hWriteLockMutex; // Signals a writing thread has ownership
|
||
|
|
HANDLE hRWevent; // Signals either read or write has ownership
|
||
|
|
} UDICT;
|
||
|
|
|
||
|
|
// Synchronization functions
|
||
|
|
BOOL UDictInitLocks(UDICT *pDict);
|
||
|
|
void UDictDestroyLocks(UDICT *pDict);
|
||
|
|
void UDictGetLock(HWL hwl, UDICT_IDX idx );
|
||
|
|
void UDictReleaseLock(HWL hwl, UDICT_IDX idx);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|