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* nptl: Remove pthread raise implementationAdhemerval Zanella2021-03-263-31/+0
| | | | | | | | | | The Linux version already target the current thread by using tgkill along with getpid and gettid. For arm, libpthread does not do a intra PLT since it will call the raise from libc. Checked on x86_64-linux-gnu.
* nptl: Move pthread_kill to libcAdhemerval Zanella2021-03-263-3/+11
| | | | | | A new 2.34 version is also provided. Checked on x86_64-linux-gnu.
* nptl: Remove sigsuspend from pthread-compat-wrappersAdhemerval Zanella2021-03-261-7/+0
| | | | The symbol is not exported by libpthread.
* nptl: Remove msgrcv from pthread-compat-wrappersAdhemerval Zanella2021-03-261-2/+0
| | | | The symbol is not exported by libpthread.
* nptl: Remove msgsnd from pthread-compat-wrappersAdhemerval Zanella2021-03-261-2/+1
| | | | The symbol is not exported by libpthread.
* nptl: Remove pwrite from libpthreadAdhemerval Zanella2021-03-262-6/+0
| | | | | | | The libc version is identical and built with same flags, it is also uses as the default version. Checked on x86_64-linux-gnu.
* nptl: Remove pread from libpthreadAdhemerval Zanella2021-03-262-6/+1
| | | | | | | The libc version is identical and built with same flags, it is also uses as the default version. Checked on x86_64-linux-gnu.
* nptl: Remove open from libpthreadAdhemerval Zanella2021-03-262-7/+0
| | | | | | | The libc version is identical and built with same flags. The libc version is set as the default version. Checked on x86_64-linux-gnu.
* nptl: Remove lseek from libpthreadAdhemerval Zanella2021-03-262-4/+0
| | | | | | | | | | | The libc version is identical and built with same flags. The libc version is set as the default version. The libpthread compat symbol requires to mask it when building the loader object otherwise ld might complain about a missing versioned symbol (as for alpha). Checked on x86_64-linux-gnu.
* nptl: Remove send from libpthreadAdhemerval Zanella2021-03-262-4/+0
| | | | | | | | | | | | | The libc version is identical and built with same flags. Both aarch64 and nios2 also requires to export __send and tt was done previously with the HAVE_INTERNAL_SEND_SYMBOL (which forced the symbol creation). All __send callers are internal to libc and the original issue that required the symbol export was due a missing libc_hidden_def. So a compat symbol is added for __send and the libc_hidden_def is defined regardless. Checked on x86_64-linux-gnu and i686-linux-gnu.
* Support for multiple versions in versioned_symbol, compat_symbolFlorian Weimer2021-03-251-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This essentially folds compat_symbol_unique functionality into compat_symbol. This change eliminates the need for intermediate aliases for defining multiple symbol versions, for both compat_symbol and versioned_symbol. Some binutils versions do not suport multiple versions per symbol on some targets, so aliases are automatically introduced, similar to what compat_symbol_unique did. To reduce symbol table sizes, a configure check is added to avoid these aliases if they are not needed. The new mechanism works with data symbols as well as function symbols, due to the way an assembler-level redirect is used. It is not compatible with weak symbols for old binutils versions, which is why the definition of __malloc_initialize_hook had to be changed. This is not a loss of functionality because weak symbols do not matter to dynamic linking. The placeholder symbol needs repeating in nptl/libpthread-compat.c now that compat_symbol is used, but that seems more obvious than introducing yet another macro. A subtle difference was that compat_symbol_unique made the symbol global automatically. compat_symbol does not do this, so static had to be removed from the definition of __libpthread_version_placeholder. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* nptl: Remove MULTI_PAGE_ALIASING [BZ #23554]H.J. Lu2021-03-192-33/+0
| | | | | MULTI_PAGE_ALIASING was introduced to mitigate an aliasing issue on Pentium 4. It is no longer needed for processors after Pentium 4.
* signal: Add __libc_sigactionAdhemerval Zanella2021-03-181-0/+1
| | | | | | | | The generic implementation basically handle the system agnostic logic (filtering out the invalid signals) while the __libc_sigaction is the function with implements the system and architecture bits. Checked on x86_64-linux-gnu and i686-linux-gnu.
* nptl: Move system to libcAdhemerval Zanella2021-03-183-49/+0
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Move fcntl from libpthreadAdhemerval Zanella2021-03-182-5/+0
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove sendmsg from libpthreadAdhemerval Zanella2021-03-182-3/+0
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove recvmsg from libpthreadAdhemerval Zanella2021-03-182-3/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove sigwait from libpthreadAdhemerval Zanella2021-03-182-2/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove tcdrain from libpthreadAdhemerval Zanella2021-03-182-3/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove pause from libpthreadAdhemerval Zanella2021-03-182-3/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove msync from libpthreadAdhemerval Zanella2021-03-182-3/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove fsync from libpthreadAdhemerval Zanella2021-03-182-3/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove sendto from libpthreadAdhemerval Zanella2021-03-182-3/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove recvfrom from libpthreadAdhemerval Zanella2021-03-182-3/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove recv from libpthreadAdhemerval Zanella2021-03-182-3/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove connect from libpthreadAdhemerval Zanella2021-03-182-4/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove accept from libpthreadAdhemerval Zanella2021-03-182-3/+0
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove close from libpthreadAdhemerval Zanella2021-03-182-4/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove read from libpthreadAdhemerval Zanella2021-03-182-4/+1
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Remove write from libpthreadAdhemerval Zanella2021-03-183-5/+2
| | | | | | The libc version is identical and built with same flags. Checked on x86_64-linux-gnu.
* nptl: Move fork into libcAdhemerval Zanella2021-03-123-52/+0
| | | | | | | | This is part of the libpthread removal project: <https://sourceware.org/ml/libc-alpha/2019-10/msg00080.html> Checked on x86_64-linux-gnu.
* posix: Consolidate register-atforkAdhemerval Zanella2021-03-122-151/+0
| | | | | | | | | | | | | Both htl and nptl uses a different data structure to implement atfork handlers. The nptl one was refactored by 27761a1042d to use a dynarray which simplifies the code. This patch moves the nptl one to be the generic implementation and replace Hurd linked one. Different than previous NPTL, Hurd also uses a global lock, so performance should be similar. Checked on x86_64-linux-gnu, i686-linux-gnu, and with a build for i686-gnu.
* nptl: Move Linux pthread_kill to nptlAdhemerval Zanella2021-03-121-9/+17
| | | | | | | The nptl already expects a Linux syscall internally. Also __is_internal_signal is used and the DEBUGGING_P check is removed. Checked on x86_64-linux-gnu.
* nptl: Fix __pthread_clockjoin_np64 __pthread_timedjoin_np64 hidden protoAdhemerval Zanella2021-03-053-4/+4
| | | | They are both implemented in libpthread instead of libc.
* [PATCH] pthread_once hangs when init routine throws an exception [BZ #18435]Jakub Jelinek2021-03-044-9/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This is another attempt at making pthread_once handle throwing exceptions from the init routine callback. As the new testcases show, just switching to the cleanup attribute based cleanup does fix the tst-once5 test, but breaks the new tst-oncey3 test. That is because when throwing exceptions, only the unwind info registered cleanups (i.e. C++ destructors or cleanup attribute), when cancelling threads and there has been unwind info from the cancellation point up to whatever needs cleanup both unwind info registered cleanups and THREAD_SETMEM (self, cleanup, ...) registered cleanups are invoked, but once we hit some frame with no unwind info, only the THREAD_SETMEM (self, cleanup, ...) registered cleanups are invoked. So, to stay fully backwards compatible (allow init routines without unwind info which encounter cancellation points) and handle exception throwing we actually need to register the pthread_once cleanups in both unwind info and in the THREAD_SETMEM (self, cleanup, ...) way. If an exception is thrown, only the former will happen and we in that case need to also unregister the THREAD_SETMEM (self, cleanup, ...) registered handler, because otherwise after catching the exception the user code could call deeper into the stack some cancellation point, get cancelled and then a stale cleanup handler would clobber stack and probably crash. If a thread calling init routine is cancelled and unwind info ends before the pthread_once frame, it will be cleaned up through self->cleanup as before. And if unwind info is present, unwind_stop first calls the self->cleanup registered handler for the frame, then it will call the unwind info registered handler but that will already see __do_it == 0 and do nothing.
* nptl: Use <unwind-link.h> for accessing the libgcc_s unwinderFlorian Weimer2021-03-013-4/+6
| | | | Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* nptl: Move elision implementations into libcFlorian Weimer2021-02-2312-39/+101
| | | | | | | | | | | | | | | | | | The elision interfaces are closely aligned between the targets that implement them, so declare them in the generic <lowlevellock.h> file. Empty .c stubs are provided, so that fewer makefile updates under sysdeps are needed. Also simplify initialization via __libc_early_init. The symbols __lll_clocklock_elision, __lll_lock_elision, __lll_trylock_elision, __lll_unlock_elision, __pthread_force_elision move into libc. For the time being, non-hidden references are used from libpthread to access them, but once that part of libpthread is moved into libc, hidden symbols will be used again. (Hidden references seem desirable to reduce the likelihood of transactions aborts.)
* nptl: Move futex-internal into libcFlorian Weimer2021-02-223-5/+5
| | | | | | | | This moves __futex_abstimed_wait64 and __futex_abstimed_wait_cancelable64 and exports these functions as GLIBC_PRIVATE. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* nptl: Move lowlevellock into libc [BZ #15648]Florian Weimer2021-02-224-26/+5
| | | | | | And export __lll_lock_wait and __lll_lock_wait_private as GLIBC_PRIVATE. This should eliminate the need for the previous riscv kludge.
* nptl: Move futex-internal.c into main nptl directoryFlorian Weimer2021-02-222-0/+129
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* nptl: Reformat VersionsFlorian Weimer2021-02-221-188/+279
| | | | | | One symbol per line, lexicographically ordered. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* nptl: Split libpthread-routines into one routine per lineFlorian Weimer2021-02-221-86/+152
| | | | | | | And sort the lines lexicographically. This will make it easier to review patches which move symbols from libpthread to libc. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* pthread: Refactor semaphore codeAdhemerval Zanella2021-02-082-22/+1
| | | | | | | | | | | The internal semaphore list code is moved to a specific file, sem_routine.c, and the internal usage is simplified to only two functions (one to insert a new semaphore and one to remove it from the internal list). There is no need to expose the internal locking, neither how the semaphore mapping is implemented. No functional or semantic change is expected, tested on x86_64-linux-gnu.
* linux: Require /dev/shm as the shared memory file systemFlorian Weimer2021-02-084-4/+0
| | | | | | | | | | | | | | | | | | | | | Previously, glibc would pick an arbitrary tmpfs file system from /proc/mounts if /dev/shm was not available. This could lead to an unsuitable file system being picked for the backing storage for shm_open, sem_open, and related functions. This patch introduces a new function, __shm_get_name, which builds the file name under the appropriate (now hard-coded) directory. It is called from the various shm_* and sem_* function. Unlike the SHM_GET_NAME macro it replaces, the callers handle the return values and errno updates. shm-directory.c is moved directly into the posix subdirectory because it can be implemented directly using POSIX functionality. It resides in libc because it is needed by both librt and nptl/htl. In the sem_open implementation, tmpfname is initialized directly from a string constant. This happens to remove one alloca call. Checked on x86_64-linux-gnu.
* nptl: Fix comment typo in pthread_cond_wait.cJangwoong Kim2021-01-041-1/+1
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* nptl: Remove set*id, set*gid files which are not builtFlorian Weimer2021-01-049-28/+0
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* Update copyright dates not handled by scripts/update-copyrights.Paul Eggert2021-01-021-1/+1
| | | | | | | | | | | | | | I've updated copyright dates in glibc for 2021. This is the patch for the changes not generated by scripts/update-copyrights and subsequent build / regeneration of generated files. As well as the usual annual updates, mainly dates in --version output (minus csu/version.c which previously had to be handled manually but is now successfully updated by update-copyrights), there is a small change to the copyright notice in NEWS which should let NEWS get updated automatically next year. Please remember to include 2021 in the dates for any new files added in future (which means updating any existing uncommitted patches you have that add new files to use the new copyright dates in them).
* Update copyright dates with scripts/update-copyrightsPaul Eggert2021-01-02280-280/+280
| | | | | | | | | | | | | | | | I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
* {nptl,htl}/semaphoreP.h: clean upSamuel Thibault2020-12-161-2/+2
| | | | | This removes "Contributed by", and uses a C99 flexible array instead of char name[0];
* htl: Get sem_open/sem_close/sem_unlink support [BZ #25524]Samuel Thibault2020-12-163-439/+0
| | | | | This just moves the existing nptl implementation to reuse as it is in htl.
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