RFR: JDK-8280941: os::print_memory_mappings() prints segment preceeding the inclusion range

[Thomas Stuefe]

On Tue, 1 Feb 2022 15:43:25 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

>> os::print_memory_mappings() is a helpful little routine to print existing memory mappings within a given range. On Linux, it parses proc/<pid>/maps. But it always prints a segment preceding the start address, e.g. here see the first line:
>> 
>> 
>> Range [7f92467a3000-7f92467a9000) contains: 7f924679f000-7f92467a3000 rw-p 00000000 00:00 0
>> 7f92467a3000-7f92467a4000 rwxp 00000000 00:00 0
>> 7f92467a4000-7f92467a5000 rw-p 00000000 00:00 0
>> 7f92467a5000-7f92467a6000 rwxp 00000000 00:00 0
>> 7f92467a6000-7f92467a7000 rw-p 00000000 00:00 0
>> 7f92467a7000-7f92467a8000 rwxp 00000000 00:00 0
>> 7f92467a8000-7f92467a9000 rw-p 00000000 00:00 0
>> 
>> 
>> and it should also precede the first line with a newline
>
> Marked as reviewed by stefank (Reviewer).

Thanks @stefank and @yminqi.

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PR: https://git.openjdk.java.net/jdk/pull/7289