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TEB structure

[This structure may be altered in future versions of Windows. Applications should use the alternate functions listed in this topic.]

Describes the state of a thread.

Syntax

C++


typedef struct _TEB {
  BYTE  Reserved1[1952];
  PVOID Reserved2[412];
  PVOID TlsSlots[64];
  BYTE  Reserved3[8];
  PVOID Reserved4[26];
  PVOID ReservedForOle;
  PVOID Reserved5[4];
  PVOID TlsExpansionSlots;
} TEB, *PTEB;

Members

Reserved1: Reserved. Do not access.
Reserved2: Reserved. Do not access.
TlsSlots: A pointer to thread local storage data. Do not directly access.
Reserved3: Reserved. Do not access.
Reserved4: Reserved. Do not access.
ReservedForOle: Reserved for OLE. Do not directly access.
Reserved5: Reserved. Do not access.
TlsExpansionSlots: A pointer to thread local storage expansion data. Do not directly access.

Remarks

You should not directly access this structure. To access the values of the TlsSlots and TlsExpansionSlots members, call TlsGetValue. To access the value of the ReservedForOle member, call CoGetContextToken.

The definition of this structure may change in future versions, so do not assume a maximum size for this structure.

Requirements

Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Header	Winternl.h

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