Before this change, we had a tendency to manually list each
contributor's name in THANKS. Now, each commit "Author" is
included in the generated THANKS file automatically, and most
of the old THANKS file is now a template, THANKS.in.
We'll still have to manually list the names of people who report
problems without a usable patch.
* THANKS.in: New file, derived from THANKS, but removing names of
those who are listed as git log 'Author:'s.
* THANKS: Remove file.
* thanks-gen: New file.
* Makefile.am (THANKS): New rule.
(EXTRA_DIST): Add .mailmap, THANKS.in and thanks-gen.
* .gitignore: Add THANKS and THANKS-to-translators.
* .mailmap: Unify on single address and name-spelling per contributor.
Commit 041c9c47 traded the 'gettext' module for the lighter 'gettext-h'
module, so as to not require the latest gettext release (we only need
the latest release if we ship gettext as a dependent library, but
coreutils has long preferred to use it as an external library).
But that commit overlooked two places necessary to allow the use of
gettext 0.17.
This does not force you to downgrade (using gettext 0.18.1.1 is still
just fine), nor does it affect tarballs (once a tarball is built
with a given gettext version, it can be built on other machines
regardless of what gettext version is present).
* bootstrap.conf (buildreq): Relax prerequisite.
* configure.ac (AM_GNU_GETTEXT_VERSION): Likewise.
* src/split.c (set_suffix_length): Only auto-calculate
the suffix length when the number of files is specified.
* tests/misc/split-a: Add a case to trigger the bug,
and exercise the suffix length auto-calculation.
* NEWS: Mention the fix.
Reported by Dmitry V. Levin and Sergey Vlasov at
https://bugzilla.altlinux.org/show_bug.cgi?id=24841
* src/csplit.c (create_output_file): Detect overflow when the
file counter wraps around, and exit with a diagnostic. Formerly
the code silently wrapped around and wrote to the wrong file,
losing output data.
* src/getlimits.c (decimal_ascii_add): Remove, replacing with ...
(decimal_absval_add_one): New function, with different signature,
which does not assume ASCII. All callers changed.
(print_int): Remove assumptions that integers fit in 206 bits, and
that characters are ASCII. These assumptions are portable in
practice but are easy to remove here.
* tests/mv/i-3: Adjust comment to match just-changed code.
Spotted by Pádraig Brady.
* tests/init.cfg (retry_delay_): Correct spelling of function name
in usage example.
* gnulib-tests/Makefile.am (test_xvasprintf_CFLAGS):
(test_lock_CFLAGS, test_tls_CFLAGS): Avoid a syntax error when
$(WERROR_CFLAGS) expands to more than one token.
* gnulib-tests/Makefile.am (test_xvasprintf_CFLAGS):
(test_lock_CFLAGS, test_tls_CFLAGS): Do not append GCC-specific
flags like -Wno-format-security unless the GCC-specific flag
-Werror is also specified. This avoids a "make check" failure on
Solaris when using Sun C 5.8.
This prevents a compilation failure on Solaris 8, GCC 4.4.2, with
"configure --enable-gcc-warnings".
* src/who.c (MAXHOSTNAMELEN): Remove; no longer needed.
* src/pinky.c: Likewise.
* tests/init.sh (setup_): Initialize fail=0 before invoking mktempd_.
Ensure that IFS is defined initially.
(mktempd_): Remove fail=0 initialization; no longer needed.
* src/cp.c (do_copy): When -T is specified, initialize
the NEW_DST and SB variables, which are checked when
running: cp -T --force --backup file file
* tests/cp/backup-1: Add the -T case
* src/sort.c (main): If --parallel isn't specified,
restrict the number of threads to 8 by default.
If the --parallel option is specified, then
allow any number of threads to be set, independent
of the number of processors on the system.
* doc/coreutils.texi (sort invocation): Document the changes
to determining the number of threads to use.
Mention the memory overhead when using multiple threads.
* tests/misc/sort-spinlock-abuse: Allow single core
systems that support pthreads.
* tests/misc/sort-stale-thread-mem: Likewise.
* tests/misc/sort-unique-segv: Likewise.
* NEWS: Mention the change in behaviour.
Without this change, tests/misc/sort-compress-hang would consume
more than 10,000 process slots on my RHEL 5.5 x86-64 server,
making it likely for other applications to fail due to lack of
process slots. With this change, the same benchmark causes 'sort'
to consume at most 19 process slots. The change also improved
wall-clock time by 2% and user+system time by 14% on that benchmark.
* NEWS: Document this.
* src/sort.c (MAX_PROCS_BEFORE_REAP): Remove.
(reap_exited): Renamed from reap_some; this is a more accurate name,
since "some" incorrectly implies that it reaps at least one process.
All uses changed.
(reap_some): New function: it *does* reap at least one process.
(pipe_fork): Do not allow more than NMERGE + 2 subprocesses.
(mergefps, sort): Omit check for exited processes: no longer needed,
and anyway the code consumed too much CPU per line when 2 < nprocs.
* NEWS: Document this.
* src/sort.c (UNCOMPRESSED, UNREAPED, REAPED): New constants.
(struct tempnode): New member 'state', to hold these constants.
The pid member is now undefined if state == UNCOMPRESSED.
(struct sortfile): Replace member 'pid' with member 'temp'.
(uintptr): Remove.
(proctab_hasher, proctab_comparator, register_proc, delete_proc):
Proctab entries are now struct tempnode *, not pid_t, to handle
the case where multiple tempnode objects correspond to the same
pid. This avoids a race condition that can cause a hang.
(register_proc): Arg is now struct tempnode *, not pid_t. All
callers changed.
(delete_proc): Set tempnode state to REAPED.
(create_temp_file): No need to set pid member here; it's now
done when the pid is known.
(maybe_create_temp, create_temp): Remove PPID arg. Return struct
tempnode *, not char *. All callers changed.
(maybe_create_temp): Set node state to UNCOMPRESSED or UNREAPED.
No need to set node->pid to 0.
(open_temp): Replace NAME and PID args with a single TEMP arg.
All callers changed. Wait only for unreaped children.
(zaptemp): Wait for decompressor to finish before removing its
temporary-file input. This avoids .nfsXXXX hassles with NFS
and fixes a race (leading to a hang) regardless of NFS.
(open_input_files): Adjust to new way of dealing with temp files
and their subprocesses.
* tests/Makefile.am (TESTS): Add misc/sort-compress-hang.
* tests/misc/sort-compress-hang: New file.
* NEWS: Document this.
* src/sort.c (avoid_trashing_input): The previous fix to this
function didn't fix all the problems with this code. Replace it
with something simpler: just copy the input file. This doesn't
change the number of files, so return void instead of the updated
file count. Caller changed.
* tests/misc/sort-merge-fdlimit: Test for the bug.
Those options are useful only on systems that lack inotify support
and in the unusual event that a system with inotify support must
resort to polling.
* src/tail.c (usage): Note that the --max-unchanged-stats=N and
--sleep-interval=N options are rarely useful on systems with
inotify support.
* doc/coreutils.texi (tail invocation): Likewise.
* src/sort.c (avoid_trashing_input): Fix a typo that could cause a
buffer overrun in theory. In practice this is extremely unlikely,
as it requires running out of file descriptors in a small merge,
presumably because some other process is hogging all the OS's file
descriptors.
* tests/check.mk (TESTS_ENVIRONMENT): Default TMPDIR to /tmp,
rather than to the working directory; this is more common in
practice, which makes the tests more real-worldish; and it is
often faster. Also, it avoids some problems with NFS cleanups.
* tests/misc/sort-compress: Remove unnecessary code setting TMPDIR.
* tests/misc/sort-compress-proc: Likewise. Do the final sleep
only if TMPDIR is relative, which should be rarely given the
change to TESTS_ENVIRONMENT.
* src/sort.c (uintptr): New type.
(enum procstate, struct procnode, update_proc): Remove.
(proctab_hasher, proctab_comparator, register_proc, wait_proc):
(reap_some): The proctab is now simply a hash of process-IDs
rather than of pointers to objects with reference counts and
states; this is smaller and faster and easier to understand.
(nprocs): Now pid_t, not size_t, since one cannot have more than
PID_MAX children.
(reap): If the argument is -1, wait; if 0 (a new value), do not.
Delete pid from proctab as needed. Ignore children that are not
in proctab, as they are from the program that exec'ed us and are
irrelevant to our success or failure.
(delete_proc, reap_all): New functions.
(open_temp): Register the child.
(sort): Clean up all children afterwards; without this patch,
'sort' sometimes missed failures in children due to race conditions.
* tests/Makefile.am (TESTS): Add misc/sort-compress-proc.
* tests/misc/sort-compress-proc: New file, to test for the
bugs fixed above.
* tests/misc/sort-stale-thread-mem: Don't initialize fail=0 here;
that is done in init.sh. This avoids a syntax-check failure.
Invoke "Exit $fail" at end, too.
Mark as a very expensive test.
This change does not fix the actual bug. That was done by commit
c9db0ac6, "sort: preallocate merge tree nodes to heap". The fix
was to store each "node" structure on the heap, not on the stack.
Otherwise, a node from one thread's stack could be used in another
thread after the first thread had expired (via pthread_join).
This bug was very hard to trigger when using spinlocks, but
easier once we began using mutexes.
* NEWS (Bug fixes): Mention it.
For details, see http://debbugs.gnu.org/7597.
* src/sort.c (specify_nthreads, merge_tree_init, init_node):
(queue_init, sortlines, struct thread_args, sort, main):
Use size_t, not unsigned long int, for thread counts, since thread
counts are now used to compute sizes.
(specify_nthreads): Check for size_t overflow.
(merge_tree_init, sort): Shorten name of local variable, for
readability.
(merge_tree_init): Move constants next to each other in product,
so that the constant folding is easier to see.
(init_node): Now static. Add 'restrict' only where it might
be helpful for compiler optimization.
(queue_init): 2nd arg is now nthreads, not "reserve", which is
a bit harder to follow. All uses changed.
(struct thread_args): Rename lo_child to is_lo_child, so that
it's obvious to the reader when we're talking about this boolean
as opposed to the new lo_child member of the other structure.
All uses changed.
(sort): Remove unused local variable end_node.
(main): Don't allow large thread counts to cause undefined behavior
later, due to integer overflow.
* src/sort.c: (merge_tree_init) New function. Allocates memory for
merge tree nodes.
(merge_tree_destory) New function.
(init_node) New function.
(sortlines) Refactor node creation code to init_node. Remove now
superfluous arguments. All callers changed.
(sort) Initialize/destory merge tree. Refactor root node creation
to merge_tree_init.
Jim Meyering