X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/libsecurity_utilities/lib/fdsel.cpp diff --git a/libsecurity_utilities/lib/fdsel.cpp b/libsecurity_utilities/lib/fdsel.cpp deleted file mode 100644 index 56c4e044..00000000 --- a/libsecurity_utilities/lib/fdsel.cpp +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Copyright (c) 2000-2001,2004 Apple Computer, Inc. All Rights Reserved. - * - * @APPLE_LICENSE_HEADER_START@ - * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and - * limitations under the License. - * - * @APPLE_LICENSE_HEADER_END@ - */ - - -// -// fdsel - select-style file descriptor set management -// -#include "fdsel.h" - - -namespace Security { -namespace UnixPlusPlus { - - -// -// Throw the bitvectors away on destruction -// -FDSet::~FDSet() -{ - delete mBits; - delete mUseBits; -} - - -// -// Given the old and desired new sizes (in fd_mask words), grow -// the bitvectors. New storage is zero filled. Note that we preserve -// the mUseBits vector, so this is safe to do during a post-select scan. -// This function cannot shrink the bitmaps. -// -void FDSet::grow(int oldWords, int newWords) -{ - assert(oldWords < newWords); - grow(mBits, oldWords, newWords); - grow(mUseBits, oldWords, newWords); -} - -void FDSet::grow(fd_mask * &bits, int oldWords, int newWords) -{ - fd_mask *newBits = new fd_mask[newWords]; - memcpy(newBits, bits, oldWords * sizeof(fd_mask)); - memset(newBits + oldWords, 0, (newWords - oldWords) * sizeof(fd_mask)); - delete [] bits; - bits = newBits; -} - - -// -// Set or clear a single bit in the map. -// No check for overflow is perfomed. -// -void FDSet::set(int fd, bool on) -{ - if (on) { - FD_SET(fd, (fd_set *)mBits); - } else { - FD_CLR(fd, (fd_set *)mBits); - FD_CLR(fd, (fd_set *)mUseBits); - } -} - - -// -// Copy only the first words fd_mask words from mBits to mUseBits -// and return that for select(2) use. -// -fd_set *FDSet::make(int words) -{ - //@@@ if empty -> return NULL (but check caller for [] use) - memcpy(mUseBits, mBits, words * sizeof(fd_mask)); - return (fd_set *)mUseBits; -} - - -} // end namespace IPPlusPlus -} // end namespace Security