RFR: https://bugs.openjdk.java.net/browse/JDK-8178349

[Yumin Qi]

Hi, please review

   bug: https://bugs.openjdk.java.net/browse/JDK-8178349
   webrev: http://cr.openjdk.java.net/~minqi/8178349/webrev-01/

   Summary: When CDS link class, need re- intialize_vtable and 
intialize_itable. For a shared class the run for initialize table(s) in 
fact just check signature loaders of virtual or interface functions but 
we need go through many steps to reach the functions, iterate over the 
functions for signatures, resolve the symbol in loaders. Those steps 
also involved lock for SystemDictionary many times for resolving 
classes.  (note for boot loaded shared classed no need to rerun).
This patch record the loader constraints during dump time and in 
runtime, directly check loader constraints for the shared class (loaded 
by app or platform loader). The performance data showed:

  Results of " perf stat -r 40 bin/javac -J-Xshare:on 
-J-XX:SharedArchiveFile=javac2.jsa Bench_HelloWorld.java "
    1:   2800027008  2793677554 ( -6349454)      --       390.665 
390.210 ( -0.455)
    2:   2799894892  2801783826 (  1888934)               392.640 
389.890 ( -2.750)      ---
    3:   2808688341  2792077758 (-16610583)      ----     392.430 
390.210 ( -2.220)      --
    4:   2806708208  2790107502 (-16600706)      ----     395.210 
390.060 ( -5.150)      -----
    5:   2807039108  2791228262 (-15810846)      ----     392.470 
388.870 ( -3.600)      ---
    6:   2803446643  2783022861 (-20423782)      -----    392.550 
388.070 ( -4.480)      ----
    7:   2809043394  2796696131 (-12347263)      ---      394.810 
389.960 ( -4.850)      -----
    8:   2798698381  2788160443 (-10537938)      ---      393.430 
390.130 ( -3.300)      ---
    9:   2797579793  2789786208 ( -7793585)      --       392.330 
390.204 ( -2.126)      --
   10:   2808294825  2800296275 ( -7998550)      --       394.180 
390.230 ( -3.950)      ----
============================================================
         2803938765  2792678505 (-11260259)      ---      393.069 
389.783 ( -3.287)      ---
instr delta =    -11260259    -0.4016%
time  delta =       -3.287 ms -0.8361%

   Results of " perf stat -r 40 bin/java -Xshare:on 
-XX:SharedArchiveFile=zprint2.jsa -cp ./zprint-filter-fixed.jar 
ZPrintBench "
    1:   6548556888  6376039292 (-172517596)      ---- 731.250   708.030 
(-23.220)      -----
    2:   6520993435  6391732011 (-129261424)      --- 729.150   711.350 
(-17.800)      ----
    3:   6505744758  6355633193 (-150111565)      ---- 729.440   707.090 
(-22.350)      -----
    4:   6545887467  6362941735 (-182945732)      ----- 731.250   
706.680 (-24.570)      -----
    5:   6497462252  6363834813 (-133627439)      --- 729.940   709.540 
(-20.400)      ----
    6:   6567639848  6369214232 (-198425616)      ----- 733.770   
709.550 (-24.220)      -----
    7:   6511495888  6369700928 (-141794960)      ---- 729.380   710.430 
(-18.950)      ----
    8:   6531525105  6342720734 (-188804371)      ----- 730.070   
706.090 (-23.980)      -----
    9:   6508499676  6322714877 (-185784799)      ----- 728.700   
705.560 (-23.140)      -----
   10:   6532457875  6430536065 (-101921810)      --- 731.590   718.240 
(-13.350)      ---
============================================================
         6526992135  6368448595 (-158543539)      ---- 730.453   709.247 
(-21.205)      ----
instr delta =   -158543539    -2.4290%
time  delta =      -21.205 ms -2.9030%

    Tests: hs-tier1,2,3,4

Thanks
Yumin