This reverts commit 42338688.

Summary:
- Replace null with root() to represent root container for consistency
- Support rcm inheritance by Thread.inheritedResourceContainer

Test Plan: jtreg com/alibaba/rcm/ multi-tenent/

Reviewed-by: luchsh, tanghaoth90

Issue: https://github.com/alibaba/dragonwell8/issues/95

Summary: ported TenantDataIsolation to Dragonwell

Test Plan: jdk/test/multi-tenant

Reviewed-by: yuleil, superajun-wsj

Issue: https://github.com/alibaba/dragonwell8/issues/84

Summary: ported cgroup-based cpu throttling facilities

Test Plan: jdk/test/multi-tenant

Reviewed-by: yuleil, superajun-wsj

Issue: https://github.com/alibaba/dragonwell8/issues/84

Summary: ported heap isolation feature of MultiTenant to Dragonwell8

Test Plan: hotspot/test/multi-tenant/

Reviewed-by: luchsh, mmyxym

Issue: https://github.com/alibaba/dragonwell8/issues/90

Summary: ported MultiTenant framework to Dragonwell8

Test Plan: jdk/test/multi-tenant

Reviewed-by: yuleil, sanhong

Issue: https://github.com/alibaba/dragonwell8/issues/84

Summary:
Introduce ResourceContainer to manage resources.
ResourceContainer defines a set of resource Constraint
that limit resource usage by threads.

Test Plan: jtreg com/alibaba/rcm

Reviewed-by: luchsh, sanhong

Issue: alibaba/dragonwell8#87

Reviewed-by: mbalao, shade

Reviewed-by: mbalao, sgehwolf

--HG--
extra : amend_source : 80de2ae62559b587c8a6df3c459b714ecc0857c1

8235909: File.exists throws AccessControlException for invalid paths when a SecurityManager is installed
Summary: Backport of JDK-8213429 missed handling the "<<ALL FILES>>" special case
Reviewed-by: mbalao

Summary: add support for opto object allocations sampling

Test Plan: hotspot/test/jfr/event/objectsprofiling/TestOptoObjectAllocationsSampling.java

Reviewers: zhengxiaolinX, luchsh, sanhong

Issue: https://github.com/alibaba/dragonwell8/issues/64

Summary: G1ElasticHeap to support heap shrink/expansion in runtime

Test Plan:
test/elastic-heap/

Reviewers:
luchsh, sanhong

Issue:
https://github.com/alibaba/dragonwell8/issues/46

CR:
https://github.com/alibaba/dragonwell8_jdk/pull/1

Summary:
port jwarmup to dragonwell 8u
ref T19299187

Test Plan: see hotspot part

Reviewers: 三红, yumin.qi

Reviewed By: 三红, yumin.qi

Subscribers: 麦庶

Differential Revision: https://aone.alibaba-inc.com/code/D852150

Summary:
- Port D336186 to Dragonwell
- Added 'mini' option to 'dump' sub-command  of 'jmap' tool

Test Plan: jdk/test/ras

Reviewers: 井桐

Reviewed By: 井桐

Differential Revision: https://aone.alibaba-inc.com/code/D849318

Summary:
Backport of JFR(jdk part) to dragonwell based on JFR preview version(JDK11).
Link:
http://cr.openjdk.java.net/~mgronlun/JEP328_FlightRecorder/Preview/webrev/index.html

Test Plan: test/jdk/jfr/

Reviewers: 卓昂, 传胜, 麦庶, yumin.qi, 三红, 芳玺

Reviewed By: 三红, 芳玺, 卓昂, yumin.qi

Differential Revision: https://aone.alibaba-inc.com/code/D818249

Summary: add distro name and version in java version string

Reviewers: 传胜

Subscribers: 麦庶

Differential Revision: https://aone.alibaba-inc.com/code/D796935

Reviewed-by: weijun, mschoene, ssahoo

Summary: Finish the job started by 8176536
Reviewed-by: mbalao

Reviewed-by: andrew

Reviewed-by: bae, bmathiske

Reviewed-by: smarks, ahgross, skoivu, rhalade

Reviewed-by: serb, psadhukhan, mschoene, rhalade

Reviewed-by: dfuchs, igerasim, michaelm, rhalade, skoivu

Reviewed-by: serb, psadhukhan, mschoene, rhalade

Reviewed-by: serb, psadhukhan, mschoene, rhalade

Reviewed-by: dfuchs, chegar, michaelm, rhalade, ahgross

Reviewed-by: serb, psadhukhan, mschoene, rhalade

8223163: Better pattern recognition
Reviewed-by: ahgross, bchristi, jeff, rhalade, rriggs, smarks

Reviewed-by: valeriep

Reviewed-by: serb, psadhukhan, mschoene, rhalade

Reviewed-by: alanb, ahgross, chegar, igerasim

8167646: Better invalid FilePermission
Reviewed-by: mbalao

Reviewed-by: shade

8147502: Digest is incorrectly truncated for ECDSA signatures when the bit length of n is less than the field size
Summary: Truncate the digest according to the group order, not the field size
Reviewed-by: shade, andrew

Summary: Move dependencies into the com.sun.crypto.provider package
Reviewed-by: shade

--HG--
rename : src/share/classes/jdk/internal/util/Preconditions.java => src/share/classes/com/sun/crypto/provider/Preconditions.java

Reviewed-by: dfuchs

Reviewed-by: naoto, rpatil

Reviewed-by: dfuchs, prappo

--HG--
extra : amend_source : 80bdb05e19be5df93a54677d1ef197eb20262d8a

Summary: Do not use justification if string width of text is within screenWidth
Reviewed-by: prr, serb
Contributed-by: verghese@amazon.com

Reviewed-by: igerasim, smarks