LSPlant/library/jni/art/runtime/jit/jit_code_cache.hpp

#pragma once

#include "common.hpp"

namespace lsplant::art::jit {
class JitCodeCache {
    CREATE_MEM_FUNC_SYMBOL_ENTRY(void, MoveObsoleteMethod, JitCodeCache *thiz,
                                 ArtMethod * old_method, ArtMethod * new_method) {
        if (MoveObsoleteMethodSym)
            [[likely]] MoveObsoleteMethodSym(thiz, old_method, new_method);
    }

    CREATE_MEM_HOOK_STUB_ENTRY(
            "_ZN3art3jit12JitCodeCache19GarbageCollectCacheEPNS_6ThreadE",
            void, GarbageCollectCache, (JitCodeCache * thiz, Thread * self), {
                LOGD("Before jit cache gc, moving hooked methods");
                for (auto[target, backup] : GetJitMovements()) {
                    MoveObsoleteMethod(thiz, target, backup);
                }
                backup(thiz, self);
            });

public:
    static bool Init(const HookHandler &handler) {
        if (!RETRIEVE_MEM_FUNC_SYMBOL(MoveObsoleteMethod,
                                      "_ZN3art3jit12JitCodeCache18MoveObsoleteMethodEPNS_9ArtMethodES3_")) {
            return false;
        }
        if (!HookSyms(handler, GarbageCollectCache)) {
            return false;
        }
        return true;
    }
};
}