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perf: use absl::flat_hash_map instead of std::unordered_map (#46202)

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* perf: make ElectronUsbDelegate::controller_map_ an absl::flat_hash_map

* perf: make ElectronSerialDelegate::controller_map_ an absl::flat_hash_map

* perf: make ElectronHidDelegate::controller_map_ an absl::flat_hash_map

* perf: make FrameTreeNodeIdMap an absl::flat_hash_map

* perf: make AutofillDriverFactory::driver_map_ an absl::flat_hash_map

* perf: make asar::Archive::external_files_ an absl::flat_hash_map

* perf: make VersionIdMap an absl::flat_hash_map

* perf: make ObjectCache::proxy_map_ an absl::flat_hash_map

* docs: add TODO to investigate absl map in KeyWeakMap
This commit is contained in:
Charles Kerr
2025-03-24 04:09:14 -05:00
committed by GitHub
parent 964090d086
commit 7ed4f0ca27
9 changed files with 24 additions and 24 deletions
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9
shell/browser/api/electron_api_service_worker_main.cc
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@@ -5,7 +5,6 @@
#include "shell/browser/api/electron_api_service_worker_main.h"
#include <string>
#include <unordered_map>
#include <utility>
#include "base/logging.h"
@@ -28,6 +27,7 @@
#include "shell/common/gin_helper/promise.h"
#include "shell/common/node_includes.h"
#include "shell/common/v8_util.h"
#include "third_party/abseil-cpp/absl/container/flat_hash_map.h"
namespace {
@@ -58,10 +58,9 @@ std::optional<content::ServiceWorkerVersionBaseInfo> GetLiveVersionInfo(
namespace electron::api {
// ServiceWorkerKey -> ServiceWorkerMain*
typedef std::unordered_map<ServiceWorkerKey,
ServiceWorkerMain*,
ServiceWorkerKey::Hasher>
VersionIdMap;
using VersionIdMap = absl::flat_hash_map<ServiceWorkerKey,
ServiceWorkerMain*,
ServiceWorkerKey::Hasher>;
VersionIdMap& GetVersionIdMap() {
static base::NoDestructor<VersionIdMap> instance;

4
shell/browser/api/electron_api_web_frame_main.cc
View File

@@ -5,7 +5,6 @@
#include "shell/browser/api/electron_api_web_frame_main.h"
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>
@@ -36,6 +35,7 @@
#include "shell/common/gin_helper/promise.h"
#include "shell/common/node_includes.h"
#include "shell/common/v8_util.h"
#include "third_party/abseil-cpp/absl/container/flat_hash_map.h"
namespace {
@@ -99,7 +99,7 @@ namespace electron::api {
// Using FrameTreeNode allows us to track frame across navigations. This
// is most similar to how <iframe> works.
using FrameTreeNodeIdMap =
std::unordered_map<content::FrameTreeNodeId, WebFrameMain*>;
absl::flat_hash_map<content::FrameTreeNodeId, WebFrameMain*>;
// Token -> WebFrameMain*
// Maps exact RFH to a WebFrameMain instance.