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atom.c File Reference

#include "precomp.h"

Go to the source code of this file.

Functions

NTSTATUS UserRtlCreateAtomTable (IN ULONG NumberOfBuckets)
ATOM UserAddAtom (LPCWSTR ccxlpAtom, BOOL bPin)
ATOM UserFindAtom (LPCWSTR ccxlpAtom)
ATOM UserDeleteAtom (ATOM atom)
UINT UserGetAtomName (ATOM atom, LPWSTR ccxlpch, int cchMax)

Variables

PVOID UserAtomTableHandle

Function Documentation

ATOM UserAddAtom (  LPCWSTR  ccxlpAtom,
BOOL  bPin
) 
 

Definition at line 35 of file w32/ntuser/kernel/atom.c.

References IS_PTR, NT_SUCCESS, NTSTATUS(), RtlAddAtomToAtomTable(), RtlPinAtomInAtomTable(), Status, and UserAtomTableHandle.

Referenced by _SetCursorIconData(), GetHmodTableIndex(), InitOLEFormats(), InternalRegisterClassEx(), InternalSetClipboardData(), NtUserRegisterWindowMessage(), SetupClassAtoms(), and Win32UserInitialize(). 

00037 {
00038     NTSTATUS Status;
00039     ATOM atom;
00040 
00041     UserAssert(IS_PTR(ccxlpAtom));
00042 
00043     /*
00044      * Rtl routines protect accesses to strings with their
00045      * own try/except blocks.
00046      */
00047     atom = 0;
00048     Status = RtlAddAtomToAtomTable( UserAtomTableHandle,
00049                                     (PWSTR)ccxlpAtom,
00050                                     &atom
00051                                    );
00052     if (!NT_SUCCESS(Status)) {
00053         RIPNTERR0(Status, RIP_VERBOSE, "UserAddAtom: add failed");
00054     }
00055 
00056     if (atom && bPin)
00057         RtlPinAtomInAtomTable(UserAtomTableHandle,atom);
00058 
00059     return atom;
00060 }

ATOM UserDeleteAtom (  ATOM  atom  ) 
 

Definition at line 84 of file w32/ntuser/kernel/atom.c.

References gatomFirstPinned, gatomLastPinned, NT_SUCCESS, NTSTATUS(), RtlDeleteAtomFromAtomTable(), Status, and UserAtomTableHandle.

Referenced by _DestroyCursor(), CleanEventMessage(), DestroyClass(), GetHmodTableIndex(), InternalRegisterClassEx(), xxxDoSysExpunge(), and xxxEmptyClipboard(). 

00086 {
00087     NTSTATUS Status;
00088 
00089     if ((atom >= gatomFirstPinned) && (atom <= gatomLastPinned))
00090         return 0;      // if pinned, just return
00091 
00092     Status = RtlDeleteAtomFromAtomTable( UserAtomTableHandle, atom );
00093     if (NT_SUCCESS(Status)) {
00094         return 0;
00095     } else {
00096         RIPNTERR0(Status, RIP_VERBOSE, "UserDeleteAtom: delete failed");
00097         return atom;
00098     }
00099 }

ATOM UserFindAtom (  LPCWSTR  ccxlpAtom  ) 
 

Definition at line 62 of file w32/ntuser/kernel/atom.c.

References NT_SUCCESS, NTSTATUS(), RtlLookupAtomInAtomTable(), Status, and UserAtomTableHandle.

Referenced by _GetWOWClass(), NtUserFindExistingCursorIcon(), and xxxCreateWindowEx(). 

00064 {
00065     NTSTATUS Status;
00066     ATOM atom;
00067 
00068     /*
00069      * Rtl routines protect accesses to strings with their
00070      * own try/except blocks.
00071      */
00072     atom = 0;
00073     Status = RtlLookupAtomInAtomTable( UserAtomTableHandle,
00074                                        (PWSTR)ccxlpAtom,
00075                                        &atom
00076                                      );
00077     if (!NT_SUCCESS(Status)) {
00078         RIPNTERR0(Status, RIP_VERBOSE, "UserFindAtom: lookup failed");
00079     }
00080 
00081     return atom;
00082 }

UINT UserGetAtomName (  ATOM  atom,
LPWSTR  ccxlpch,
int  cchMax
) 
 

Definition at line 101 of file w32/ntuser/kernel/atom.c.

References NT_SUCCESS, NTSTATUS(), NULL, RtlQueryAtomInAtomTable(), Status, UINT, and UserAtomTableHandle.

Referenced by _InternalGetIconInfo(), InternalSetClipboardData(), NtUserGetClassName(), NtUserGetClipboardFormatName(), and xxxLoadHmodIndex(). 

00105 {
00106     NTSTATUS Status;
00107     ULONG AtomNameLength;
00108 
00109     AtomNameLength = cchMax * sizeof(WCHAR);
00110     Status = RtlQueryAtomInAtomTable( UserAtomTableHandle,
00111                                       atom,
00112                                       NULL,
00113                                       NULL,
00114                                       ccxlpch,
00115                                       &AtomNameLength
00116                                     );
00117     if (!NT_SUCCESS(Status)) {
00118         RIPNTERR0(Status, RIP_VERBOSE, "UserGetAtomName: query failed");
00119         return 0;
00120     } else {
00121         return AtomNameLength / sizeof(WCHAR);
00122     }
00123 }

NTSTATUS UserRtlCreateAtomTable (  IN ULONG  NumberOfBuckets  ) 
 

Definition at line 18 of file w32/ntuser/kernel/atom.c.

References NTSTATUS(), NULL, RtlCreateAtomTable(), Status, and UserAtomTableHandle. 

00021 {
00022     NTSTATUS Status;
00023 
00024     if (UserAtomTableHandle == NULL) {
00025         Status = RtlCreateAtomTable( NumberOfBuckets, &UserAtomTableHandle );
00026     } else {
00027         RIPMSG0(RIP_VERBOSE, "UserRtlCreateAtomTable: table alread exists");
00028         Status = STATUS_SUCCESS;
00029     }
00030 
00031     return Status;
00032 }

Variable Documentation

PVOID UserAtomTableHandle
 

Definition at line 15 of file w32/ntuser/kernel/atom.c.

Referenced by UserAddAtom(), UserDeleteAtom(), UserFindAtom(), UserGetAtomName(), UserRtlCreateAtomTable(), and Win32kNtUserCleanup().

Generated on Sat May 15 19:42:56 2004 for test by doxygen 1.3.7