Performance improvement

[JaynLau]

I did a performance test for property access on jdk18 , the Burningwave JVM Driver's NativeExecutor is 8~12x faster than Narcissus. Both of them are based on JNI, is there any potential for performance improvement?

Benchmark                           Mode  Cnt        Score        Error   Units
get01_java_getName                 thrpt    5  2128351.065 ±  74044.483  ops/ms
get02_java_unsafe                  thrpt    5  2846238.581 ± 132301.972  ops/ms
get03_java_reflect_field           thrpt    5   182753.044 ±  28968.836  ops/ms
get04_java_reflect_getMethod       thrpt    5   137141.267 ±  16768.646  ops/ms
get05_java_invoke_varHandle        thrpt    5   168817.474 ±  10359.285  ops/ms
get06_java_invoke_getHandle        thrpt    5   202012.161 ±  50515.654  ops/ms
get07_java_invoke_getMethodHandle  thrpt    5   201015.559 ±  51183.238  ops/ms
get08_fieldAccess_name             thrpt    5   252810.286 ±  32768.620  ops/ms
get09_fieldAccess_index            thrpt    5  1425272.069 ±  18093.328  ops/ms
get10_methodAccess_name            thrpt    5   539337.043 ±  33062.343  ops/ms
get11_methodAccess_index           thrpt    5  1427615.352 ±   8237.573  ops/ms
get12_lambda_direct                thrpt    5  1412883.918 ±  33164.843  ops/ms
get13_lambda_fields_map            thrpt    5    77283.963 ±   1821.877  ops/ms
get14_reflects_get                 thrpt    5   162476.454 ±  20608.103  ops/ms
get15_jvm_driver_default           thrpt    5    41581.069 ±   1461.163  ops/ms
get16_jvm_driver_native            thrpt    5    16982.117 ±    369.449  ops/ms
get17_narcissus                    thrpt    5     2258.050 ±    121.033  ops/ms
get18_burningwave                  thrpt    5   180255.080 ±  16060.492  ops/ms
get19_burningwave_direct           thrpt    5    40617.747 ±    591.870  ops/ms
get20_burningwave_native_executor  thrpt    5    17394.136 ±    335.737  ops/ms
set01_java_setName                 thrpt    5  1007696.459 ±   8521.341  ops/ms
set02_java_unsafe                  thrpt    5   944449.969 ±  13842.098  ops/ms
set03_java_reflect_field           thrpt    5   151057.420 ±   4908.564  ops/ms
set04_java_reflect_setMethod       thrpt    5   125062.344 ±   2237.722  ops/ms
set05_java_invoke_varHandle        thrpt    5   168639.088 ±   1514.980  ops/ms
set06_java_invoke_setHandle        thrpt    5   199371.416 ±  32195.275  ops/ms
set07_java_invoke_setMethodHandle  thrpt    5   199195.644 ±  34596.830  ops/ms
set08_fieldAccess_name             thrpt    5   217216.306 ±   4400.018  ops/ms
set09_fieldAccess_index            thrpt    5   839790.554 ±  20571.623  ops/ms
set10_methodAccess_name            thrpt    5   118759.113 ±   7924.908  ops/ms
set11_methodAccess_index           thrpt    5   845086.701 ±  20002.237  ops/ms
set12_lambda_direct                thrpt    5   849925.530 ±  12502.299  ops/ms
set13_lambda_fields_map            thrpt    5    73733.279 ±   3575.869  ops/ms
set14_reflects_set                 thrpt    5   135721.616 ±  10151.304  ops/ms
set15_jvm_driver_default           thrpt    5    37480.005 ±   3478.883  ops/ms
set16_jvm_driver_native            thrpt    5    19672.880 ±    321.688  ops/ms
set17_narcissus                    thrpt    5     1580.701 ±     35.507  ops/ms
set18_burningwave                  thrpt    5   157602.092 ±   2529.233  ops/ms
set19_burningwave_direct           thrpt    5    39859.614 ±    999.843  ops/ms
set20_burningwave_native_executor  thrpt    5    19833.011 ±    396.308  ops/ms

[Roberto-Gentili]

The NativeExecutor of Burningwave JVM Driver is written in C++ while Naricissus in C: I don't know if it could depend on this or on some flag to pass to the compiler: what do you think @lukehutch?