RFR: 8269416: [JVMCI] capture libjvmci crash data to a file [v4]

[Doug Simon]

> When a fatal error occurs in libgraal, it writes a crash dump to `tty`. Instead, it should be captured in a separate log file that is then referenced in the HotSpot crash summary (just like the hs_err_pid and CI replay compile log files are). This allows libgraal crash data to be more easily submitted along with VM crash reports.
> 
> For example:
> 
>> java -Dlibgraal.CrashAtIsFatal=true -Dgraal.CrashAt=String.equals -cp bin CountUppercase skjdf
> #
> # A fatal error has been detected by the Java Runtime Environment:
> #
> #  Internal Error (jvmciRuntime.cpp:909), pid=36298, tid=41219
> #  fatal error: thread 41219: Fatal error in JVMCI shared library
> #
> # JRE version: OpenJDK Runtime Environment GraalVM LIBGRAAL 21.3.0-dev (16.0.2) (build 16.0.2-internal+0-adhoc.dnsimon.labsjdk-ce-16)
> # Java VM: OpenJDK 64-Bit Server VM GraalVM LIBGRAAL 21.3.0-dev (16.0.2-internal+0-adhoc.dnsimon.labsjdk-ce-16, mixed mode, tiered, jvmci, jvmci compiler, compressed oops, compressed class ptrs, g1 gc, bsd-amd64)
> # No core dump will be written. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
> #
> # An error report file with more information is saved as:
> # /Users/dnsimon/graal/graal/compiler/hs_err_pid36298.log
> #
> # The JVMCI shared library error data is saved as:
> # /Users/dnsimon/graal/graal/compiler/hs_err_pid36298_libjvmci.log
> #
> # If you would like to submit a bug report, please visit:
> #   https://bugreport.java.com/bugreport/crash.jsp
> # The crash happened outside the Java Virtual Machine in native code.
> # See problematic frame for where to report the bug.
> #

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

  use fdStream instead of fileStream

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4620/files
  - new: https://git.openjdk.java.net/jdk/pull/4620/files/ba004ef0..fac6c3dc

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4620&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4620&range=02-03

  Stats: 19 lines in 2 files changed: 2 ins; 3 del; 14 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4620.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4620/head:pull/4620

PR: https://git.openjdk.java.net/jdk/pull/4620