[jdk11u-dev] RFR: 8234510: Remove file seeking requirement for writing a heap dump [v3]

[BuddyLiao]

> Backport of the heap dump enhancement: Remove file seeking requirement for writing a heap dump
> 
> Patch did not apply cleanly, I had to resolve/modify
>     src/hotspot/share/services/heapDumper.cpp
> 
> I have built it on linux x86_64 and run test-tier1

BuddyLiao has updated the pull request incrementally with one additional commit since the last revision:

  Update full name

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Changes:
  - all: https://git.openjdk.java.net/jdk11u-dev/pull/134/files
  - new: https://git.openjdk.java.net/jdk11u-dev/pull/134/files/6098c619..650e623b

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=134&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=134&range=01-02

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/134.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/134/head:pull/134

PR: https://git.openjdk.java.net/jdk11u-dev/pull/134