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Unified Diff: net/spdy/hpack_header_table.cc

Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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Index: net/spdy/hpack_header_table.cc
diff --git a/net/spdy/hpack_header_table.cc b/net/spdy/hpack_header_table.cc
deleted file mode 100644
index 044c59d74dce5ad6fbfcdcba0b884c0a0901c140..0000000000000000000000000000000000000000
--- a/net/spdy/hpack_header_table.cc
+++ /dev/null
@@ -1,208 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "net/spdy/hpack_header_table.h"
-
-#include <algorithm>
-
-#include "base/logging.h"
-#include "net/spdy/hpack_constants.h"
-#include "net/spdy/hpack_static_table.h"
-#include "net/spdy/hpack_string_util.h"
-
-namespace net {
-
-using base::StringPiece;
-
-bool HpackHeaderTable::EntryComparator::operator() (
- const HpackEntry* lhs, const HpackEntry* rhs) const {
- int result = lhs->name().compare(rhs->name());
- if (result != 0)
- return result < 0;
- result = lhs->value().compare(rhs->value());
- if (result != 0)
- return result < 0;
- const size_t lhs_index = lhs->IsLookup() ? 0 : 1 + lhs->InsertionIndex();
- const size_t rhs_index = rhs->IsLookup() ? 0 : 1 + rhs->InsertionIndex();
- DCHECK(lhs == rhs || lhs_index != rhs_index)
- << "lhs: (" << lhs->name() << ", " << rhs->value() << ") rhs: ("
- << rhs->name() << ", " << rhs->value() << ")"
- << " lhs index: " << lhs_index << " rhs index: " << rhs_index;
- return lhs_index < rhs_index;
-}
-
-HpackHeaderTable::HpackHeaderTable()
- : static_entries_(ObtainHpackStaticTable().GetStaticEntries()),
- static_index_(ObtainHpackStaticTable().GetStaticIndex()),
- settings_size_bound_(kDefaultHeaderTableSizeSetting),
- size_(0),
- max_size_(kDefaultHeaderTableSizeSetting),
- total_insertions_(static_entries_.size()) {}
-
-HpackHeaderTable::~HpackHeaderTable() {}
-
-const HpackEntry* HpackHeaderTable::GetByIndex(size_t index) {
- if (index == 0) {
- return NULL;
- }
- index -= 1;
- if (index < static_entries_.size()) {
- return &static_entries_[index];
- }
- index -= static_entries_.size();
- if (index < dynamic_entries_.size()) {
- return &dynamic_entries_[index];
- }
- return NULL;
-}
-
-const HpackEntry* HpackHeaderTable::GetByName(StringPiece name) {
- HpackEntry query(name, "");
- {
- OrderedEntrySet::const_iterator it = static_index_.lower_bound(&query);
- if (it != static_index_.end() && (*it)->name() == name) {
- return *it;
- }
- }
- {
- OrderedEntrySet::const_iterator it = dynamic_index_.lower_bound(&query);
- if (it != dynamic_index_.end() && (*it)->name() == name) {
- return *it;
- }
- }
- return NULL;
-}
-
-const HpackEntry* HpackHeaderTable::GetByNameAndValue(StringPiece name,
- StringPiece value) {
- HpackEntry query(name, value);
- {
- OrderedEntrySet::const_iterator it = static_index_.lower_bound(&query);
- if (it != static_index_.end() &&
- (*it)->name() == name &&
- (*it)->value() == value) {
- return *it;
- }
- }
- {
- OrderedEntrySet::const_iterator it = dynamic_index_.lower_bound(&query);
- if (it != dynamic_index_.end() &&
- (*it)->name() == name &&
- (*it)->value() == value) {
- return *it;
- }
- }
- return NULL;
-}
-
-size_t HpackHeaderTable::IndexOf(const HpackEntry* entry) const {
- if (entry->IsLookup()) {
- return 0;
- } else if (entry->IsStatic()) {
- return 1 + entry->InsertionIndex();
- } else {
- return total_insertions_ - entry->InsertionIndex() + static_entries_.size();
- }
-}
-
-void HpackHeaderTable::SetMaxSize(size_t max_size) {
- CHECK_LE(max_size, settings_size_bound_);
-
- max_size_ = max_size;
- if (size_ > max_size_) {
- Evict(EvictionCountToReclaim(size_ - max_size_));
- CHECK_LE(size_, max_size_);
- }
-}
-
-void HpackHeaderTable::SetSettingsHeaderTableSize(size_t settings_size) {
- settings_size_bound_ = settings_size;
- if (settings_size_bound_ < max_size_) {
- SetMaxSize(settings_size_bound_);
- }
-}
-
-void HpackHeaderTable::EvictionSet(StringPiece name,
- StringPiece value,
- EntryTable::iterator* begin_out,
- EntryTable::iterator* end_out) {
- size_t eviction_count = EvictionCountForEntry(name, value);
- *begin_out = dynamic_entries_.end() - eviction_count;
- *end_out = dynamic_entries_.end();
-}
-
-size_t HpackHeaderTable::EvictionCountForEntry(StringPiece name,
- StringPiece value) const {
- size_t available_size = max_size_ - size_;
- size_t entry_size = HpackEntry::Size(name, value);
-
- if (entry_size <= available_size) {
- // No evictions are required.
- return 0;
- }
- return EvictionCountToReclaim(entry_size - available_size);
-}
-
-size_t HpackHeaderTable::EvictionCountToReclaim(size_t reclaim_size) const {
- size_t count = 0;
- for (EntryTable::const_reverse_iterator it = dynamic_entries_.rbegin();
- it != dynamic_entries_.rend() && reclaim_size != 0; ++it, ++count) {
- reclaim_size -= std::min(reclaim_size, it->Size());
- }
- return count;
-}
-
-void HpackHeaderTable::Evict(size_t count) {
- for (size_t i = 0; i != count; ++i) {
- CHECK(!dynamic_entries_.empty());
- HpackEntry* entry = &dynamic_entries_.back();
-
- size_ -= entry->Size();
- CHECK_EQ(1u, dynamic_index_.erase(entry));
- dynamic_entries_.pop_back();
- }
-}
-
-const HpackEntry* HpackHeaderTable::TryAddEntry(StringPiece name,
- StringPiece value) {
- Evict(EvictionCountForEntry(name, value));
-
- size_t entry_size = HpackEntry::Size(name, value);
- if (entry_size > (max_size_ - size_)) {
- // Entire table has been emptied, but there's still insufficient room.
- DCHECK(dynamic_entries_.empty());
- DCHECK_EQ(0u, size_);
- return NULL;
- }
- dynamic_entries_.push_front(HpackEntry(name,
- value,
- false, // is_static
- total_insertions_));
- CHECK(dynamic_index_.insert(&dynamic_entries_.front()).second);
-
- size_ += entry_size;
- ++total_insertions_;
-
- return &dynamic_entries_.front();
-}
-
-void HpackHeaderTable::DebugLogTableState() const {
- DVLOG(2) << "Dynamic table:";
- for (EntryTable::const_iterator it = dynamic_entries_.begin();
- it != dynamic_entries_.end(); ++it) {
- DVLOG(2) << " " << it->GetDebugString();
- }
- DVLOG(2) << "Full Static Index:";
- for (OrderedEntrySet::const_iterator it = static_index_.begin();
- it != static_index_.end(); ++it) {
- DVLOG(2) << " " << (*it)->GetDebugString();
- }
- DVLOG(2) << "Full Dynamic Index:";
- for (OrderedEntrySet::const_iterator it = dynamic_index_.begin();
- it != dynamic_index_.end(); ++it) {
- DVLOG(2) << " " << (*it)->GetDebugString();
- }
-}
-
-} // namespace net
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