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Registry redirection
To support the coexistence of 32-bit and 64-bit COM registration and program states, the WOW64 subsystem presents 32-bit programs by using another view of the registry. The WOW64 subsystem uses registry redirection to intercept registry calls at the bit level. Registry redirection also makes sure that the registry calls are directed to the correct branches in the registry.

When you install a new program or when you run a program on a Windows x64 Edition computer, registry calls made by 64-bit programs access the HKEY_LOCAL_MACHINE\Software registry sub key without redirection. WOW64 intercepts registry calls to HKEY_LOCAL_MACHINE\Software that are made by 32-bit programs, and then redirects them to the HKEY_LOCAL_MACHINE\Software\WOW6432node sub key. By redirecting only the 32-bit program calls, WOW64 makes sure that programs always write to the appropriate registry sub key. Registry redirection does not require program code modification, and this process is transparent to the user.

samDesired
A mask that specifies the access rights for the key. For more information, see Registry Key Security and Access Rights.

Requirements
Client Requires Windows Vista, Windows XP, or Windows 2000 Professional.
Server Requires Windows Server 2008, Windows Server 2003, or Windows 2000 Server.

samDesired
A mask that specifies the desired access rights to the key. The function fails if the security descriptor of the key does not permit the requested access for the calling process. For more information, see Registry Key Security and Access Rights.

Requirements
Client Requires Windows Vista, Windows XP, or Windows 2000 Professional.
Server Requires Windows Server 2008, Windows Server 2003, or Windows 2000 Server.

samDesired
An access mask the specifies the platform-specific view of the registry.

Value Meaning
KEY_WOW64_32KEY
0x0200
Delete the key from the 32-bit registry view.

KEY_WOW64_64KEY
0x0100
Delete the key from the 64-bit registry view.

Requirements
Client Requires Windows Vista or Windows XP Professional x64 Edition.
Server Requires Windows Server 2008 or Windows Server 2003 SP1.

Determines whether the specified process is running under WOW64.

Requirements
Client Requires Windows Vista or Windows XP SP2.
Server Requires Windows Server 2008 or Windows Server 2003 SP1.

DLL Requires Kernel32.dll.

getrlimit() と setrlimit() はそれぞれ資源 (resource) の制限 (limit) の設定と取得を行う。各リソースには、それに対応するソフト・リミットとハード・リミットがある。

ソフト・リミットは、カーネルが対応するリソースに対して課す制限値である。ハード・リミットはソフト・リミットの上限として働く。

RLIMIT_CORE
core ファイルの最大サイズ。 0 の場合、core ファイルは生成されない。 0 以外の場合、このサイズより大きいダンプは切り詰められる。