diff options
Diffstat (limited to 'depends/pack200/src/bytes.cpp')
| -rw-r--r-- | depends/pack200/src/bytes.cpp | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/depends/pack200/src/bytes.cpp b/depends/pack200/src/bytes.cpp deleted file mode 100644 index d3808afa..00000000 --- a/depends/pack200/src/bytes.cpp +++ /dev/null @@ -1,217 +0,0 @@ -/* - * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <assert.h> -#include <stdint.h> -#include "defines.h" -#include "bytes.h" -#include "utils.h" - -static byte dummy[1 << 10]; - -bool bytes::inBounds(const void *p) -{ - return p >= ptr && p < limit(); -} - -void bytes::malloc(size_t len_) -{ - len = len_; - ptr = NEW(byte, add_size(len_, 1)); // add trailing zero byte always - if (ptr == nullptr) - { - // set ptr to some victim memory, to ease escape - set(dummy, sizeof(dummy) - 1); - unpack_abort(ERROR_ENOMEM); - } -} - -void bytes::realloc(size_t len_) -{ - if (len == len_) - return; // nothing to do - if (ptr == dummy) - return; // escaping from an error - if (ptr == nullptr) - { - malloc(len_); - return; - } - byte *oldptr = ptr; - ptr = (len_ >= PSIZE_MAX) ? nullptr : (byte *)::realloc(ptr, add_size(len_, 1)); - if (ptr != nullptr) - { - if (len < len_) - memset(ptr + len, 0, len_ - len); - ptr[len_] = 0; - len = len_; - } - else - { - ptr = oldptr; // ease our escape - unpack_abort(ERROR_ENOMEM); - } -} - -void bytes::free() -{ - if (ptr == dummy) - return; // escaping from an error - if (ptr != nullptr) - { - ::free(ptr); - } - len = 0; - ptr = 0; -} - -int bytes::indexOf(byte c) -{ - byte *p = (byte *)memchr(ptr, c, len); - return (p == 0) ? -1 : (int)(p - ptr); -} - -byte *bytes::writeTo(byte *bp) -{ - memcpy(bp, ptr, len); - return bp + len; -} - -int bytes::compareTo(bytes &other) -{ - size_t l1 = len; - size_t l2 = other.len; - int cmp = memcmp(ptr, other.ptr, (l1 < l2) ? l1 : l2); - if (cmp != 0) - return cmp; - return (l1 < l2) ? -1 : (l1 > l2) ? 1 : 0; -} - -void bytes::saveFrom(const void *ptr_, size_t len_) -{ - malloc(len_); - // Save as much as possible. - if (len_ > len) - { - assert(ptr == dummy); // error recovery - len_ = len; - } - copyFrom(ptr_, len_); -} - -//#TODO: Need to fix for exception handling -void bytes::copyFrom(const void *ptr_, size_t len_, size_t offset) -{ - assert(len_ == 0 || inBounds(ptr + offset)); - assert(len_ == 0 || inBounds(ptr + offset + len_ - 1)); - memcpy(ptr + offset, ptr_, len_); -} - -// Make sure there are 'o' bytes beyond the fill pointer, -// advance the fill pointer, and return the old fill pointer. -byte *fillbytes::grow(size_t s) -{ - size_t nlen = add_size(b.len, s); - if (nlen <= allocated) - { - b.len = nlen; - return limit() - s; - } - size_t maxlen = nlen; - if (maxlen < 128) - maxlen = 128; - if (maxlen < allocated * 2) - maxlen = allocated * 2; - if (allocated == 0) - { - // Initial buffer was not malloced. Do not reallocate it. - bytes old = b; - b.malloc(maxlen); - if (b.len == maxlen) - old.writeTo(b.ptr); - } - else - { - b.realloc(maxlen); - } - allocated = b.len; - if (allocated != maxlen) - { - b.len = nlen - s; // back up - return dummy; // scribble during error recov. - } - // after realloc, recompute pointers - b.len = nlen; - assert(b.len <= allocated); - return limit() - s; -} - -void fillbytes::ensureSize(size_t s) -{ - if (allocated >= s) - return; - size_t len0 = b.len; - grow(s - size()); - b.len = len0; // put it back -} - -int ptrlist::indexOf(const void *x) -{ - int len = length(); - for (int i = 0; i < len; i++) - { - if (get(i) == x) - return i; - } - return -1; -} - -void ptrlist::freeAll() -{ - int len = length(); - for (int i = 0; i < len; i++) - { - void *p = (void *)get(i); - if (p != nullptr) - { - ::free(p); - } - } - free(); -} - -int intlist::indexOf(int x) -{ - int len = length(); - for (int i = 0; i < len; i++) - { - if (get(i) == x) - return i; - } - return -1; -} |