diff --git a/core/src/main/jni/src/jni/dex_parser.cpp b/core/src/main/jni/src/jni/dex_parser.cpp
index 6a1bc700..6d73545f 100644
--- a/core/src/main/jni/src/jni/dex_parser.cpp
+++ b/core/src/main/jni/src/jni/dex_parser.cpp
@@ -22,7 +22,8 @@
 #include "slicer/reader.h"
 
 #include <list>
-#include <absl/container/flat_hash_map.h>
+#include <set>
+#include <parallel_hashmap/phmap.h>
 
 namespace {
     using Value = std::tuple<jint /*type*/, std::vector<jbyte> /*data*/>;
@@ -62,11 +63,11 @@ namespace {
         };
 
         std::vector<ClassData> class_data;
-        absl::flat_hash_map<jint, std::vector<jint>> field_annotations;
-        absl::flat_hash_map<jint, std::vector<jint>> method_annotations;
-        absl::flat_hash_map<jint, std::vector<jint>> parameter_annotations;
+        phmap::flat_hash_map<jint, std::vector<jint>> field_annotations;
+        phmap::flat_hash_map<jint, std::vector<jint>> method_annotations;
+        phmap::flat_hash_map<jint, std::vector<jint>> parameter_annotations;
 
-        absl::flat_hash_map<jint, MethodBody> method_bodies;
+        phmap::flat_hash_map<jint, MethodBody> method_bodies;
     };
 
     template<class T>
diff --git a/core/src/main/jni/src/jni/hook_bridge.cpp b/core/src/main/jni/src/jni/hook_bridge.cpp
index 467a6811..724013b4 100644
--- a/core/src/main/jni/src/jni/hook_bridge.cpp
+++ b/core/src/main/jni/src/jni/hook_bridge.cpp
@@ -20,7 +20,7 @@
 #include "hook_bridge.h"
 #include "native_util.h"
 #include "lsplant.hpp"
-#include <absl/container/flat_hash_map.h>
+#include <parallel_hashmap/phmap.h>
 #include <memory>
 #include <shared_mutex>
 #include <mutex>
@@ -58,8 +58,12 @@ public:
     }
 };
 
-std::shared_mutex hooked_lock;
-absl::flat_hash_map<jmethodID, std::unique_ptr<HookItem>> hooked_methods;
+template <class K, class V, class Hash = phmap::priv::hash_default_hash<K>,
+        class Eq = phmap::priv::hash_default_eq<K>,
+        class Alloc = phmap::priv::Allocator<phmap::priv::Pair<const K, V>>, size_t N = 4>
+using SharedHashMap = phmap::parallel_flat_hash_map<K, V, Hash, Eq, Alloc, N, std::shared_mutex>;
+
+SharedHashMap<jmethodID, std::unique_ptr<HookItem>> hooked_methods;
 
 jmethodID invoke = nullptr;
 jmethodID callback_ctor = nullptr;
@@ -88,22 +92,14 @@ LSP_DEF_NATIVE_METHOD(jboolean, HookBridge, hookMethod, jboolean useModernApi, j
 #endif
     auto target = env->FromReflectedMethod(hookMethod);
     HookItem * hook_item = nullptr;
-    {
-        std::shared_lock lk(hooked_lock);
-        if (auto found = hooked_methods.find(target); found != hooked_methods.end()) {
-            hook_item = found->second.get();
-        }
-    }
-    if (!hook_item) {
-        std::unique_lock lk(hooked_lock);
-        if (auto &ptr = hooked_methods[target]; !ptr) {
-            ptr = std::make_unique<HookItem>();
-            hook_item = ptr.get();
-            newHook = true;
-        } else {
-            hook_item = ptr.get();
-        }
-    }
+    hooked_methods.lazy_emplace_l(target, [&hook_item](auto &it) {
+        hook_item = it.second.get();
+    }, [&hook_item, &target, &newHook](const auto &ctor) {
+        auto ptr = std::make_unique<HookItem>();
+        hook_item = ptr.get();
+        ctor(target, std::move(ptr));
+        newHook = true;
+    });
     if (newHook) {
         auto init = env->GetMethodID(hooker, "<init>", "(Ljava/lang/reflect/Executable;)V");
         auto callback_method = env->ToReflectedMethod(hooker, env->GetMethodID(hooker, "callback",
@@ -139,12 +135,9 @@ LSP_DEF_NATIVE_METHOD(jboolean, HookBridge, hookMethod, jboolean useModernApi, j
 LSP_DEF_NATIVE_METHOD(jboolean, HookBridge, unhookMethod, jboolean useModernApi, jobject hookMethod, jobject callback) {
     auto target = env->FromReflectedMethod(hookMethod);
     HookItem * hook_item = nullptr;
-    {
-        std::shared_lock lk(hooked_lock);
-        if (auto found = hooked_methods.find(target); found != hooked_methods.end()) {
-            hook_item = found->second.get();
-        }
-    }
+    hooked_methods.if_contains(target, [&hook_item](const auto &it) {
+        hook_item = it.second.get();
+    });
     if (!hook_item) return JNI_FALSE;
     jobject backup = hook_item->GetBackup();
     if (!backup) return JNI_FALSE;
@@ -178,12 +171,9 @@ LSP_DEF_NATIVE_METHOD(jobject, HookBridge, invokeOriginalMethod, jobject hookMet
                       jobject thiz, jobjectArray args) {
     auto target = env->FromReflectedMethod(hookMethod);
     HookItem * hook_item = nullptr;
-    {
-        std::shared_lock lk(hooked_lock);
-        if (auto found = hooked_methods.find(target); found != hooked_methods.end()) {
-            hook_item = found->second.get();
-        }
-    }
+    hooked_methods.if_contains(target, [&hook_item](const auto &it) {
+        hook_item = it.second.get();
+    });
     return env->CallObjectMethod(hook_item ? hook_item->GetBackup() : hookMethod, invoke, thiz, args);
 }
 
@@ -307,12 +297,9 @@ LSP_DEF_NATIVE_METHOD(jboolean, HookBridge, setTrusted, jobject cookie) {
 LSP_DEF_NATIVE_METHOD(jobjectArray, HookBridge, callbackSnapshot, jclass callback_class, jobject method) {
     auto target = env->FromReflectedMethod(method);
     HookItem *hook_item = nullptr;
-    {
-        std::shared_lock lk(hooked_lock);
-        if (auto found = hooked_methods.find(target); found != hooked_methods.end()) {
-            hook_item = found->second.get();
-        }
-    }
+    hooked_methods.if_contains(target, [&hook_item](const auto &it) {
+        hook_item = it.second.get();
+    });
     if (!hook_item) return nullptr;
     jobject backup = hook_item->GetBackup();
     if (!backup) return nullptr;
diff --git a/daemon/src/main/jni/obfuscation.h b/daemon/src/main/jni/obfuscation.h
index f721d03e..ec9dd151 100644
--- a/daemon/src/main/jni/obfuscation.h
+++ b/daemon/src/main/jni/obfuscation.h
@@ -19,12 +19,12 @@
 
 #pragma once
 #include <string>
-#include <absl/container/flat_hash_map.h>
+#include <parallel_hashmap/phmap.h>
 #include "utils/jni_helper.hpp"
 
 class WA: public dex::Writer::Allocator {
     // addr: {size, fd}
-    absl::flat_hash_map<void*, std::pair<size_t, int>> allocated_;
+    phmap::flat_hash_map<void*, std::pair<size_t, int>> allocated_;
 public:
     inline void* Allocate(size_t size) override {
         auto fd = ASharedMemory_create("", size);
diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index 1c6af93b..84e99017 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -24,9 +24,9 @@ set(LIBCXX_SOURCES
 #        filesystem/operations.cpp
         functional.cpp
         future.cpp
-# use absl instead
-#        hash.cpp
+        hash.cpp
 #        ios.cpp
+#        ios.instantiations.cpp
 #        iostream.cpp
 #        locale.cpp
         memory.cpp
@@ -61,6 +61,7 @@ set(LIBCXX_EXPORT_FLAGS
         -D_LIBCPP_BUILDING_LIBRARY
         -D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS
         -D_LIBCXXABI_NO_EXCEPTIONS
+        -D_LIBCPP_HAS_NO_LOCALIZATION
         )
 set(LIBCXX_FLAGS
         -fvisibility-global-new-delete-hidden
diff --git a/external/lsplant b/external/lsplant
index bbabd250..c18f2761 160000
--- a/external/lsplant
+++ b/external/lsplant
@@ -1 +1 @@
-Subproject commit bbabd25043f4fd8056cf5df55e2839de824467a1
+Subproject commit c18f27617727f04b0785709ff63a63457bc5dd6c