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2017-07-06Add per-thread cache to mallocDJ Delorie13-9/+490
* config.make.in: Enable experimental malloc option. * configure.ac: Likewise. * configure: Regenerate. * manual/install.texi: Document it. * INSTALL: Regenerate. * malloc/Makefile: Likewise. * malloc/malloc.c: Add per-thread cache (tcache). (tcache_put): New. (tcache_get): New. (tcache_thread_freeres): New. (tcache_init): New. (__libc_malloc): Use cached chunks if available. (__libc_free): Initialize tcache if needed. (__libc_realloc): Likewise. (__libc_calloc): Likewise. (_int_malloc): Prefill tcache when appropriate. (_int_free): Likewise. (do_set_tcache_max): New. (do_set_tcache_count): New. (do_set_tcache_unsorted_limit): New. * manual/probes.texi: Document new probes. * malloc/arena.c: Add new tcache tunables. * elf/dl-tunables.list: Likewise. * manual/tunables.texi: Document them. * NEWS: Mention the per-thread cache.
2017-07-06Increase some test timeouts.Joseph Myers7-3/+14
This patch increases the timeouts for some tests that I've seen timing out on slow systems in my 2.26 release testing. (In the case of tst-tsearch.c, increasing the timeout means removing a setting of 10 that was put there before the default timeout was increased to 20 seconds, so putting the default into effect.) * iconvdata/tst-loading.c (TIMEOUT): Define to 30. * misc/tst-tsearch.c (TIMEOUT): Remove. * nptl/tst-create-detached.c (TIMEOUT): Define to 100. * nptl/tst-robust-fork.c (TIMEOUT): Likewise. * nptl/tst-rwlock19.c (TIMEOUT): Likewise. * string/tst-cmp.c (TIMEOUT): Define to 600.
2017-07-06Arabic scripts: More fixes after the recent import.Rafal Luzynski14-80/+138
After the recent import of month names from CLDRv31 (bug 21217, commit c853f14) more imports are also needed, mostly abbreviated month names. This patch also updates May (full month name) in ps_AF which was skipped in the previous patch. Incidentally, this import fixes bug 17225 (ar_SY) and partially bug 19066 (ar_SA). CLDR currently has a bug in the full month name for October for ar_IQ, see http://unicode.org/cldr/trac/ticket/10460 * localedata/locales/ar_DZ (abmon): Full import from CLDR, abmon is no longer abbreviated. * localedata/locales/ar_IQ (abmon): Likewise. * localedata/locales/ar_MA (abmon): Likewise. * localedata/locales/ar_TN (abmon): Likewise. * localedata/locales/ps_AF (abmon): Likewise. * localedata/locales/ug_CN (abmon): Likewise. * localedata/locales/ar_SA (abmon): Likewise, partially fixes bug 19066. * localedata/locales/ks_IN (abmon): A copy of mon. * localedata/locales/ur_IN (abmon): Oct reworded "اكتوبر" to "اکتوبر" (same change as mon). * localedata/locales/ur_PK (abmon): Same changes as mon applied. * localedata/locales/ps_AF (mon): May reworded "می" to "مۍ". [BZ #17225] * localedata/locales/ar_SY (abmon): May reworded "نوار" to "أيار", this closes bug 17225. * localedata/locales/ar_JO (abmon): Likewise. * localedata/locales/ar_LB (abmon): Likewise.
2017-07-06nptl: Fix typo on __have_pthread_attr_t (BZ#21715)Matthew Krupcale2-1/+7
This patch fixes some build issues when including types/sigevent_t.h along with bits/pthreadtypes.h. Checked on x86_64-linux-gnu and on a build on supported major ABIs. [BZ #21715] * sysdeps/nptl/bits/pthreadtypes.h (__have_pthread_attr_t): Fix typo on definition.
2017-07-06x86-64: Align the stack in __tls_get_addr [BZ #21609]H.J. Lu7-2/+143
This change forces realignment of the stack pointer in __tls_get_addr, so that binaries compiled by GCCs older than GCC 4.9: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066 continue to work even if vector instructions are used in glibc which require the ABI stack realignment. __tls_get_addr_slow is added to handle the slow paths in the default implementation of__tls_get_addr in elf/dl-tls.c. The new __tls_get_addr calls __tls_get_addr_slow after realigning the stack. Internal calls within ld.so go directly to the default implementation of __tls_get_addr because they do not need stack realignment. [BZ #21609] * sysdeps/x86_64/Makefile (sysdep-dl-routines): Add tls_get_addr. (gen-as-const-headers): Add rtld-offsets.sym. * sysdeps/x86_64/dl-tls.c: New file. * sysdeps/x86_64/rtld-offsets.sym: Likwise. * sysdeps/x86_64/tls_get_addr.S: Likewise. * sysdeps/x86_64/dl-tls.h: Add multiple inclusion guards. * sysdeps/x86_64/tlsdesc.sym (TI_MODULE_OFFSET): New. (TI_OFFSET_OFFSET): Likwise.
2017-07-06Pashto yesstr/nostr locale are missingAkhilesh Kumar2-0/+7
[BZ #21711] During Locale verification I observed that yesstr and nostr are missing for Pashto [LC_MESSAGES] Locale For Afghanistan reference google translate and Pashto travel book.
2017-07-05posix: Fix default posix_spawn return valueAdhemerval Zanella2-20/+25
This patch fix the return value for error conditions for default posix_spawn (where the errno is expected). It also avoid clobber errno on fork call. Checked on x86_64 (with Linux implementation removed). [BZ# 21697] * sysdeps/posix/spawni.c (__spawni_child): Fix return value. (__spawnix): Do not clober errno.
2017-07-05Fixup localedata/ChangeLog.Carlos O'Donell1-6/+9
- Rewrite recent entry to follow GNU ChangeLog format. - Convert spaces to tabs in one case.
2017-07-05Edit and shorten float128 NEWS item.Joseph Myers1-93/+14
2017-07-05support: Add resolver testing mode which does not patch _resFlorian Weimer5-3/+549
2017-07-05support: Add support_chroot_create and support_chroot_freeFlorian Weimer5-47/+140
2017-07-05support: Check isolation of loopback addresses in tst-support-namespaceFlorian Weimer2-2/+88
2017-07-05Added Tok-Pisin locale.Akhilesh Kumar3-0/+223
[BZ #21694] Added tok-pisin language locale for Papua New Guinea. Signed-off-by: Akhilesh Kumar <akhilesh.k@samsung.com>
2017-07-05Consistently say "GNU C Library" in NEWS, not "glibc".Joseph Myers1-20/+20
2017-07-05Reorganize and revise NEWS for 2.26.Zack Weinberg1-135/+144
2017-07-04For Breton yesstr/nostr locale are missingAkhilesh Kumar2-0/+7
[BZ #21706] During Locale verification i observed that yesstr and nostr are missing for Breton [LC_MESSAGES] locale Signed-off-by: Akhilesh Kumar <akhilesh.k@samsung.com>
2017-07-04Single threaded stdio optimizationSzabolcs Nagy15-0/+76
Locking overhead can be significant in some stdio operations that are common in single threaded applications. This patch adds the _IO_FLAGS2_NEED_LOCK flag to indicate if an _IO_FILE object needs to be locked and some of the stdio functions just jump to their _unlocked variant when not. The flag is set on all _IO_FILE objects when the first thread is created. A new GLIBC_PRIVATE libc symbol, _IO_enable_locks, was added to do this from libpthread. The optimization can be applied to more stdio functions, currently it is only applied to single flag check or single non-wide-char standard operations. The flag should probably be never set for files with _IO_USER_LOCK, but that's just a further optimization, not a correctness requirement. The optimization is valid in a single thread because stdio operations are non-as-safe (so lock state is not observable from a signal handler) and stdio locks are recursive (so lock state is not observable via deadlock). The optimization is not valid if a thread may be created while an stdio lock is taken and thus it should be disabled if any user code may run during an stdio operation (interposed malloc, printf hooks, etc). This makes the optimization more complicated for some stdio operations (e.g. printf), but those are bigger and thus less important to optimize so this patch does not try to do that. * libio/libio.h (_IO_FLAGS2_NEED_LOCK, _IO_need_lock): Define. * libio/libioP.h (_IO_enable_locks): Declare. * libio/Versions (_IO_enable_locks): New symbol. * libio/genops.c (_IO_enable_locks): Define. (_IO_old_init): Initialize flags2. * libio/feof.c.c (_IO_feof): Avoid locking when not needed. * libio/ferror.c (_IO_ferror): Likewise. * libio/fputc.c (fputc): Likewise. * libio/putc.c (_IO_putc): Likewise. * libio/getc.c (_IO_getc): Likewise. * libio/getchar.c (getchar): Likewise. * libio/ioungetc.c (_IO_ungetc): Likewise. * nptl/pthread_create.c (__pthread_create_2_1): Enable stdio locks. * libio/iofopncook.c (_IO_fopencookie): Enable locking for the file. * sysdeps/pthread/flockfile.c (__flockfile): Likewise.
2017-07-04sysconf: Use conservative default for _SC_NPROCESSORS_ONLN [BZ #21542]Florian Weimer4-2/+109
2017-07-04resolv: Fix resolv_conf _res matchingFlorian Weimer3-5/+61
A dot-less host name without an /etc/resolv.conf file caused an assertion failure in update_from_conf because the function would not deal correctly with the empty search list case. Thanks to Andreas Schwab for debugging assistence.
2017-07-04Update versions in build-many-glibcs.py.Joseph Myers2-3/+9
This patch updates build-many-glibcs.py to use the current release branch of binutils and current releases of GMP and the Linux kernel. * scripts/build-many-glibcs.py (Context.checkout): Default binutils version to 2.29 branch, GMP version to 6.1.2 and Linux kernel version to 4.12.
2017-07-04resolv: Fix improper assert in __resolv_conf_attachFlorian Weimer4-8/+108
2017-07-03resolv: Introduce free list for resolv_conf index slostsFlorian Weimer4-32/+142
2017-07-03resolv: Automatically reload a changed /etc/resolv.conf file [BZ #984]Florian Weimer11-94/+272
This commit enhances the stub resolver to reload the configuration in the per-thread _res object if the /etc/resolv.conf file has changed. The resolver checks whether the application has modified _res and will not overwrite the _res object in that case. The struct resolv_context mechanism is used to check the configuration file only once per name lookup.
2017-07-03resolv: Mirror the entire resolver configuration in struct resolv_confFlorian Weimer7-116/+572
This commit adds the remaining unchanging members (which are loaded from /etc/resolv.conf) to struct resolv_conf. The extended name server list is currently not used by the stub resolver. The switch depends on a cleanup: The _u._ext.nssocks array stores just a single socket, and needs to be replaced with a single socket value. (The compatibility gethostname implementation does not use the extended addres sort list, either. Updating the compat code is not worthwhile.)
2017-07-03resolv: Lift domain search list limits [BZ #19569] [BZ #21475]Florian Weimer8-81/+382
This change uses the extended resolver state in struct resolv_conf to store the search list. If applications have not patched the _res object directly, this extended search list will be used by the stub resolver during name resolution.
2017-07-03resolv: Introduce struct resolv_conf with extended resolver stateFlorian Weimer9-10/+470
This change provides additional resolver configuration state which is not exposed through the _res ABI. It reuses the existing initstamp field in the supposedly-private part of _res. Some effort is undertaken to avoid memory safety issues introduced by applications which directly patch the _res object. With this commit, only the initstamp field is moved into struct resolv_conf. Additional members will be added later, eventually migrating the entire resolver configuration.
2017-07-03resolv: Introduce struct resolv_context [BZ #21668]Florian Weimer24-371/+1033
struct resolv_context objects provide a temporary resolver context which does not change during a name lookup operation. Only when the outmost context is created, the stub resolver configuration is verified to be current (at present, only against previous res_init calls). Subsequent attempts to obtain the context will reuse the result of the initial verification operation. struct resolv_context can also be extended in the future to store data which needs to be deallocated during thread cancellation.
2017-07-03resolv: Add preinit tests to resolv/tst-resolv-res_init-skeleton.cFlorian Weimer2-1/+201
2017-07-03More fixes after the recent import from CLDR-31Rafal Luzynski9-64/+103
After the recent import of month names from CLDR (bug 21217) more imports are also needed, mostly abbreviated month names. * localedata/locales/br_FR (abmon): Reworded "Eve " to "Mezh". * localedata/locales/fy_NL (abmon): Reworded "Maa" (March) to "Mrt" and "Maa" (May) to "Mai". * localedata/locales/lg_UG (abmon): Reworded "Jun" to "Juu". * localedata/locales/ln_CD (abmon): "yan", "fbl", "msi", and so on. * localedata/locales/mn_MN (abmon): "1-р сар", "2-р сар", "3-р сар", and so on. * localedata/locales/vi_VN (abmon): Reworded "Th01" to "Thg 1", "Th02" to "Thg 2" and so on. * localedata/locales/yo_NG (abday): "Àìkú", "Ajé", "Ìsẹ́gun", and so on, also comment updated to match the new content. (day): "Ọjọ́ Àìkú", "Ọjọ́ Ajé", "Ọjọ́ Ìsẹ́gun", and so on. (abmon): "Ṣẹ́rẹ́", "Èrèlè", "Ẹrẹ̀nà", and so on. (mon): Comment updated to match the actual content. (d_t_fmt): Changed "%A" to "%a" and "%B" to "%b". * localedata/locales/zu_ZA (abmon): "Jan", "Feb", "Mas", and so on, also comment updated to match the new content. (mon): comment updated to match the actual content.
2017-07-03powerpc: Clean up strlen and strnlen for power8Rajalakshmi Srinivasaraghavan3-20/+6
To align a quadword aligned address to 64 bytes, maximum of three 16 bytes load is needed for worst case instead of loading four times.
2017-07-01Use __builtin_popcount in __sched_cpucount [BZ #21696]H.J. Lu2-17/+17
posix/sched_cpucount.c assumes that size of __cpu_mask == size of long, which is incorrect for x32. This patch uses __builtin_popcount, which is availabe in GCC 4.9, in posix/sched_cpucount.c. Tested on i686, x86-64 and x32 with multi-arch disabled. [BZ #21696] * posix/sched_cpucount.c: Don't include <limits.h>. (__sched_cpucount): Use __builtin_popcount.
2017-07-01Fix typo in glibc.tune.cpu nameSiddhesh Poyarekar2-1/+6
2017-06-30float128: Add signbit alternative for old compilersGabriel F. T. Gomes6-1/+71
In math/math.h, __MATH_TG will expand signbit to __builtin_signbit*, e.g.: __builtin_signbitf128, before GCC 6. However, there has never been a __builtin_signbitf128 in GCC and the type-generic builtin is only available since GCC 6. For older GCC, this patch defines __builtin_signbitf128 to __signbitf128, so that the internal function is used instead of the non-existent builtin. This patch also changes the implementation of __signbitf128, because it was reusing the implementation of __signbitl from ldbl-128, which calls __builtin_signbitl. Using the long double version of the builtin is not correct on machines where _Float128 is ABI-distinct from long double (i.e.: ia64, powerpc64le, x86, x86_84). The new implementation does not rely on builtins when being built with GCC versions older than 6.0. The new code does not currently affect powerpc64le builds, because only GCC 6.2 fulfills the requirements from configure. It might affect powerpc64le builds if those requirements are backported to older versions of the compiler. The new code affects x86_64 builds, since glibc is supposed to build correctly with older versions of GCC. Tested for powerpc64le and x86_64. * include/math.h (__signbitf128): Define as hidden. * sysdeps/ieee754/float128/s_signbitf128.c (__signbitf128): Reimplement without builtins. * sysdeps/ia64/bits/floatn.h [!__GNUC_PREREQ (6, 0)] (__builtin_signbitf128): Define to __signbitf128. * sysdeps/powerpc/bits/floatn.h: Likewise. * sysdeps/x86/bits/floatn.h: Likewise.
2017-06-30Consolidate Linux fcntl implementationAdhemerval Zanella15-224/+54
This patch consolidates the fcntl Linux syscall generation on sysdeps/unix/sysv/linux/fcntl.c. It basically removes all the architecture specific implementations. Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32, aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu. * sysdeps/unix/sysv/linux/arm/fcntl.c: Remove file. * sysdeps/unix/sysv/linux/generic/wordsize-32/fcntl.c: Likewise. * sysdeps/unix/sysv/linux/hppa/fcntl.c: Likewise. * sysdeps/unix/sysv/linux/i386/fcntl.c: Likewise. * sysdeps/unix/sysv/linux/m68k/fcntl.c: Likewise. * sysdeps/unix/sysv/linux/microblaze/fcntl.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/fcntl.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/fcntl.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fcntl.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/fcntl.c: Likewise. * sysdeps/unix/sysv/linux/sh/fcntl.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/fcntl.c: Likewise. * sysdeps/unix/sysv/linux/fcntl.c: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc64/fcntl.c: Refactor to use default implementation.
2017-06-30tunables, aarch64: New tunable to override cpuSiddhesh Poyarekar6-26/+106
Add a new tunable (glibc.tune.cpu) to override CPU identification on aarch64. This is useful in two cases: one where it is desirable to pretend to be another CPU for purposes of testing or because routines written for that CPU are beneficial for specific workloads and second where the underlying kernel does not support emulation of MRS to get the MIDR of the CPU. * elf/dl-tunables.h (tunable_is_name): Move from... * elf/dl-tunables.c (is_name): ... here. (parse_tunables, __tunables_init): Adjust. * manual/tunables.texi: Document glibc.tune.cpu. * sysdeps/aarch64/dl-tunables.list: New file. * sysdeps/unix/sysv/linux/aarch64/cpu-features.c (struct cpu_list): New type. (cpu_list): New list of CPU names and their MIDR. (get_midr_from_mcpu): New function. (init_cpu_features): Override MIDR if necessary.
2017-06-30aarch64: Call all string function implementations in testsSiddhesh Poyarekar2-4/+8
The string function implementations implemented so far do not use any instructions that may deviate from standard aarch64, so it is possible for all routines to run on all armv8 hardware. Select all implementations in the benchmarks and tests. * sysdeps/aarch64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Unconditionally select thunderx routine for testing.
2017-06-30i386: Increase MALLOC_ALIGNMENT to 16 [BZ #21120]H.J. Lu5-10/+64
GCC 7 changed the definition of max_align_t on i386: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=9b5c49ef97e63cc63f1ffa13baf771368105ebe2 As a result, glibc malloc no longer returns memory blocks which are as aligned as max_align_t requires. This causes malloc/tst-malloc-thread-fail to fail with an error like this one: error: allocation function 0, size 144 not aligned to 16 This patch moves the MALLOC_ALIGNMENT definition to <malloc-alignment.h> and increases the malloc alignment to 16 for i386. [BZ #21120] * malloc/malloc-internal.h (MALLOC_ALIGNMENT): Moved to ... * sysdeps/generic/malloc-alignment.h: Here. New file. * sysdeps/i386/malloc-alignment.h: Likewise. * sysdeps/generic/malloc-machine.h: Include <malloc-alignment.h>.
2017-06-30resolv: Improve debugging output from tst-resolv-res_initFlorian Weimer2-2/+19
2017-06-30resolv: Remove source argument fron res_optionsFlorian Weimer2-4/+9
2017-06-30resolv: Remove DEBUG from resolv/res_query.cFlorian Weimer2-36/+4
2017-06-30resolv: Reformat resolv/res_data.c to GNU styleFlorian Weimer2-13/+38
2017-06-30resolv: Move res_query, res_search res_querydomain, hostaliasFlorian Weimer3-81/+63
From res_data.c to query.c
2017-06-30resolv: Move res_isourserver, res_send from res_data.c to res_send.cFlorian Weimer3-16/+20
2017-06-30resolv: Turn _res_opcodes into a compatibility symbolFlorian Weimer4-6/+21
2017-06-30resolv: Move fp_nquery, fp_query, p_query, _res_opcodesFlorian Weimer4-59/+71
From res_data.c to res_debug.c. Also drop the unnecessary _res initialization from fp_nquery.
2017-06-30resolv: Remove unused resolv/res_debug.h header fileFlorian Weimer3-35/+5
2017-06-30resolv: Remove DEBUG from resolv/res_send.cFlorian Weimer2-144/+7
2017-06-30resolv: Move the res_mkquery function to the resolv/mk_query.c fileFlorian Weimer3-21/+26
2017-06-30resolv: Reformat resolv/res_mkquery.c to GNU styleFlorian Weimer2-144/+145
2017-06-30resolv: Remove DEBUG macro from resolv/res_mkquery.cFlorian Weimer2-18/+23
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