739351d476
Change log:95336cb92b..191d55580eFull diff:95336cb92b..191d55580eRoll chromium third_party 4e16929f46..3a8f2a9e1e Change log:4e16929f46..3a8f2a9e1eChanged dependencies: * src/tools:c44a3f5eca..f524a53b81DEPS diff:95336cb92b..191d55580e/DEPS No update to Clang. TBR=titovartem@google.com, BUG=None CQ_INCLUDE_TRYBOTS=master.internal.tryserver.corp.webrtc:linux_internal Change-Id: Ic9c4a62b050383646e9fcf5cc07a5653c14ac06e Reviewed-on: https://webrtc-review.googlesource.com/76120 Reviewed-by: Patrik Höglund <phoglund@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Artem Titov <titovartem@webrtc.org> Commit-Queue: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23205}
102 lines
3.1 KiB
C++
102 lines
3.1 KiB
C++
// Copyright (c) 2008, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// ---
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// Author: Sanjay Ghemawat <opensource@google.com>
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#include <config.h>
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#include "span.h"
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#include <string.h> // for NULL, memset
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#include "internal_logging.h" // for ASSERT
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#include "page_heap_allocator.h" // for PageHeapAllocator
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#include "static_vars.h" // for Static
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namespace tcmalloc {
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#ifdef SPAN_HISTORY
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void Event(Span* span, char op, int v = 0) {
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span->history[span->nexthistory] = op;
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span->value[span->nexthistory] = v;
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span->nexthistory++;
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if (span->nexthistory == sizeof(span->history)) span->nexthistory = 0;
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}
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#endif
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Span* NewSpan(PageID p, Length len) {
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Span* result = Static::span_allocator()->New();
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memset(result, 0, sizeof(*result));
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result->start = p;
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result->length = len;
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#ifdef SPAN_HISTORY
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result->nexthistory = 0;
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#endif
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return result;
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}
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void DeleteSpan(Span* span) {
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#ifndef NDEBUG
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// In debug mode, trash the contents of deleted Spans
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memset(span, 0x3f, sizeof(*span));
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#endif
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Static::span_allocator()->Delete(span);
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}
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void DLL_Init(Span* list) {
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list->next = list;
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list->prev = list;
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}
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void DLL_Remove(Span* span) {
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span->prev->next = span->next;
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span->next->prev = span->prev;
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span->prev = NULL;
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span->next = NULL;
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}
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int DLL_Length(const Span* list) {
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int result = 0;
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for (Span* s = list->next; s != list; s = s->next) {
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result++;
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}
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return result;
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}
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void DLL_Prepend(Span* list, Span* span) {
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ASSERT(span->next == NULL);
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ASSERT(span->prev == NULL);
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span->next = list->next;
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span->prev = list;
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list->next->prev = span;
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list->next = span;
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}
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} // namespace tcmalloc
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