[SCM] Hurd branch, master, updated. v0.7-10-g226a9d9

[Justus Winter]

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- Log -----------------------------------------------------------------
commit 226a9d9c34a2d187f978a25874488e5b07986d7c
Author: Justus Winter <address@hidden>
Date:   Sun Jun 7 00:58:36 2015 +0200

    libihash: prefer performance degradation over failure
    
    * libihash/ihash.c (hurd_ihash_add): Add the item even though we are
    above the load factor if resizing failed.

commit c1d5c163a89f53a3c6e4e67f5f4119af96f7a470
Author: Justus Winter <address@hidden>
Date:   Wed May 14 16:24:21 2014 +0200

    libihash: optimize lookup-or-insert operations
    
    If libihash is used to implement a cache, a insertion is always
    preceeded by a lookup.  hurd_ihash_add has to do the lookup again.
    
    Provide a new pair of functions, hurd_ihash_locp_add and
    hurd_ihash_locp_find, that can be used in combination to avoid the
    second lookup.
    
    * libihash/ihash.c (hurd_ihash_locp_add): New function using a
    location pointer...
    (hurd_ihash_locp_find): ... that has been returned by this function.
    * libihash/ihash.h (hurd_ihash_locp_add): New declaration.
    (hurd_ihash_locp_find): Likewise.
    (hurd_ihash_locp_value): New function.

commit 6c948532d2799bcc172053cac504c4aa5f016bba
Author: Justus Winter <address@hidden>
Date:   Thu May 15 17:55:45 2014 +0200

    libihash: add hurd_ihash_value_valid
    
    * libihash/ihash.h (hurd_ihash_value_valid): New function.
    * libihash/ihash.c (index_empty): Use hurd_ihash_value_valid.

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

Summary of changes:
 libihash/ihash.c |   93 +++++++++++++++++++++++++++++++++++++++++++++++++++--
 libihash/ihash.h |   59 ++++++++++++++++++++++++++++++++++
 2 files changed, 148 insertions(+), 4 deletions(-)


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