[core] Manually release ElfImg (#747)

core/build.gradle.kts

@@ -99,16 +99,14 @@ android {
                     "-D__FILE__=__FILE_NAME__",
                     "-DRIRU_MODULE",
                     "-DRIRU_MODULE_API_VERSION=$moduleMaxRiruApiVersion",
-                    """-DMODULE_NAME=\"$riruModuleId\""""
-//                    "-DRIRU_MODULE_VERSION=$verCode", // this will stop ccache from hitting
-//                    """-DRIRU_MODULE_VERSION_NAME=\"$verName\"""",
+                    """-DMODULE_NAME=\"$riruModuleId\"""",
                 )
                 cppFlags("-std=c++20", *flags)
                 cFlags("-std=c18", *flags)
                 arguments(
                     "-DANDROID_STL=none",
                     "-DVERSION_CODE=$verCode",
-                    "-DVERSION_NAME=$verName"
+                    "-DVERSION_NAME=$verName",
                 )
                 targets("lspd")
             }

core/src/main/cpp/CMakeLists.txt

@@ -18,6 +18,7 @@
 ## Copyright (C) 2021 LSPosed Contributors
 ##
 
+project(libcxx)
 cmake_minimum_required(VERSION 3.4.1)
 
 find_program(CCACHE ccache)

core/src/main/cpp/main/src/context.cpp

@@ -231,6 +231,7 @@ namespace lspd {
         } else {
             auto context = Context::ReleaseInstance();
             auto service = Service::ReleaseInstance();
+            art_img.reset();
             LOGD("skipped %s", process_name.get());
             setAllowUnload(true);
         }

core/src/main/cpp/main/src/elf_util.h

@@ -58,6 +58,10 @@ namespace SandHook {
             return base != nullptr;
         }
 
+        const std::string name() const {
+            return elf;
+        }
+
         ~ElfImg();
 
     private:

core/src/main/cpp/main/src/native_hook.cpp

@@ -47,7 +47,7 @@ namespace lspd {
             return;
         }
         LOGD("Start to install inline hooks");
-        SandHook::ElfImg &handle_libart = *art_img;
+        const auto &handle_libart = *art_img;
         if (!handle_libart.isValid()) {
             LOGE("Failed to fetch libart.so");
         }

core/src/main/cpp/main/src/symbol_cache.cpp

@@ -39,7 +39,7 @@ namespace lspd {
     void *sym_openDexFileNative = nullptr;
     void *sym_setTrusted = nullptr;
     void *sym_set_table_override = nullptr;
-    std::unique_ptr<SandHook::ElfImg> art_img = nullptr;
+    std::unique_ptr<const SandHook::ElfImg> art_img = nullptr;
 
     bool findLibArt() {
         art_img = std::make_unique<SandHook::ElfImg>(kLibArtName);

core/src/main/cpp/main/src/symbol_cache.h

@@ -32,7 +32,7 @@ namespace SandHook {
 
 namespace lspd {
     extern bool sym_initialized;
-    extern std::unique_ptr<SandHook::ElfImg> art_img;
+    extern std::unique_ptr<const SandHook::ElfImg> art_img;
     extern void *sym_do_dlopen;
     extern void *sym_openInMemoryDexFilesNative;
     extern void *sym_createCookieWithArray;