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Update perlrun.pod #8

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Update perlrun.pod #8

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@1nickt 1nickt commented Jul 30, 2015

Clarify that -a creates the @f array.

Clarify that -a creates the @f array.
@1nickt 1nickt closed this Aug 3, 2015
p5p pushed a commit that referenced this pull request Feb 19, 2016
This has large memory savings, test prog,
perl -MTest::More -e"system 'pause'"
before 2196KB Private Bytes Win 7 32 bit to after 2092KB.

-On a CHEK the refcount is a U32 for memory savings on 64 bit CPUs while
 SHEKs are Size_t for refcount because of HE struct, on 32 bit Size_t and
 U32 happen to be the same thing, if there is future integration the
 refcount members will have to be the same type, then duping a SHEK or
 a CHEK is the same code, except that HVhek_COMPILING controls whether to
 aquire OP_REFCNT_LOCK before touching the ref count, in the future with
 atomic operations, the refcount can be manipulated with atomic operations
 regardless if it is a SHEK or CHEK since OP_REFCNT_LOCK lines were removed
-TODO figure out how to do static const CHEKs, hash member must be 0
 since its process specific randomized (rurban's B stores HEKs in RW static
 memory and fixes up the hash #s at runtime), add test and branch
 so that refcount isn't read and written or passed to PerlMemShared_free
 if static flag is on inidicating static const CHEK
-TODO Perl_newGP uses CHEKs not CopFILE, no memcpy and add _< that way
-TODO optimize the former alloca to smallbuf or Safefree or savestack
 newx free
p5p pushed a commit that referenced this pull request Feb 21, 2016
This has large memory savings, test prog,
perl -MTest::More -e"system 'pause'"
before 2196KB Private Bytes Win 7 32 bit to after 2092KB.

-On a CHEK the refcount is a U32 for memory savings on 64 bit CPUs while
 SHEKs are Size_t for refcount because of HE struct, on 32 bit Size_t and
 U32 happen to be the same thing, if there is future integration the
 refcount members will have to be the same type, then duping a SHEK or
 a CHEK is the same code, except that HVhek_COMPILING controls whether to
 aquire OP_REFCNT_LOCK before touching the ref count, in the future with
 atomic operations, the refcount can be manipulated with atomic operations
 regardless if it is a SHEK or CHEK since OP_REFCNT_LOCK lines were removed
-TODO figure out how to do static const CHEKs, hash member must be 0
 since its process specific randomized (rurban's B stores HEKs in RW static
 memory and fixes up the hash #s at runtime), add test and branch
 so that refcount isn't read and written or passed to PerlMemShared_free
 if static flag is on inidicating static const CHEK
-TODO Perl_newGP uses CHEKs not CopFILE, no memcpy and add _< that way
-TODO optimize the former alloca to smallbuf or Safefree or savestack
 newx free
p5p pushed a commit that referenced this pull request Feb 23, 2016
This has large memory savings, test prog,
perl -MTest::More -e"system 'pause'"
before 2196KB Private Bytes Win 7 32 bit to after 2092KB.

-On a CHEK the refcount is a U32 for memory savings on 64 bit CPUs while
 SHEKs are Size_t for refcount because of HE struct, on 32 bit Size_t and
 U32 happen to be the same thing, if there is future integration the
 refcount members will have to be the same type, then duping a SHEK or
 a CHEK is the same code, except that HVhek_COMPILING controls whether to
 aquire OP_REFCNT_LOCK before touching the ref count, in the future with
 atomic operations, the refcount can be manipulated with atomic operations
 regardless if it is a SHEK or CHEK since OP_REFCNT_LOCK lines were removed
-TODO figure out how to do static const CHEKs, hash member must be 0
 since its process specific randomized (rurban's B stores HEKs in RW static
 memory and fixes up the hash #s at runtime), add test and branch
 so that refcount isn't read and written or passed to PerlMemShared_free
 if static flag is on inidicating static const CHEK
-TODO Perl_newGP uses CHEKs not CopFILE, no memcpy and add _< that way
-TODO optimize the former alloca to smallbuf or Safefree or savestack
 newx free
p5p pushed a commit that referenced this pull request Feb 25, 2016
This has large memory savings, test prog,
perl -MTest::More -e"system 'pause'"
before 2196KB Private Bytes Win 7 32 bit to after 2092KB.

-On a CHEK the refcount is a U32 for memory savings on 64 bit CPUs while
 SHEKs are Size_t for refcount because of HE struct, on 32 bit Size_t and
 U32 happen to be the same thing, if there is future integration the
 refcount members will have to be the same type, then duping a SHEK or
 a CHEK is the same code, except that HVhek_COMPILING controls whether to
 aquire OP_REFCNT_LOCK before touching the ref count, in the future with
 atomic operations, the refcount can be manipulated with atomic operations
 regardless if it is a SHEK or CHEK since OP_REFCNT_LOCK lines were removed
-TODO figure out how to do static const CHEKs, hash member must be 0
 since its process specific randomized (rurban's B stores HEKs in RW static
 memory and fixes up the hash #s at runtime), add test and branch
 so that refcount isn't read and written or passed to PerlMemShared_free
 if static flag is on inidicating static const CHEK
-TODO Perl_newGP uses CHEKs not CopFILE, no memcpy and add _< that way
-TODO optimize the former alloca to smallbuf or Safefree or savestack
 newx free
jkeenan pushed a commit that referenced this pull request Nov 13, 2020
From Changes:

* Fix GitHub #8: Comparison between signed and unsigned integer
* Merge PR #9: Fix compile warnings with -Wsign-compare
* Merge PR #11: Avoid indirect call syntax

Committer: Additional email address for contributor to keep porting
tests happy
demerphq added a commit that referenced this pull request Sep 9, 2022
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khwilliamson pushed a commit to khwilliamson/perl5 that referenced this pull request Oct 18, 2022
New RFC: command-line flag for slurping
demerphq added a commit that referenced this pull request Oct 25, 2022
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demerphq added a commit that referenced this pull request Feb 8, 2023
demerphq added a commit that referenced this pull request Feb 19, 2023
demerphq added a commit that referenced this pull request Feb 20, 2023
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