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2013-06-10x86*: Return syscall error for lll_futex_wake.Carlos O'Donell2-8/+10
It is very very possible that the futex syscall returns an error and that the caller of lll_futex_wake may want to look at that error and propagate the failure. This patch allows a caller to see the syscall error. There are no users of the syscall error at present, but future cleanups are now be able to check for the error. -- nplt/ 2013-06-10 Carlos O'Donell <carlos@redhat.com> * sysdeps/unix/sysv/linux/i386/lowlevellock.h (lll_futex_wake): Return syscall error. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h (lll_futex_wake): Return syscall error.
2013-06-08Fix previous commit.Ondrej Bilka1-2/+2
2013-06-08Silence warning: __inline is not at beginning of declaration.Ondrej Bilka1-1/+1
2013-06-06Remove trailing whitespace in nptl.Joseph Myers12-46/+46
2013-05-16Add #include <stdint.h> for uint[32|64]_t usage (except installed headers).Ryan S. Arnold1-0/+1
2013-05-15Reserve new TLS field for x86 and x86_64Andreas Jaeger2-2/+6
[BZ #10686] * sysdeps/x86_64/tls.h (struct tcbhead_t): Add __private_ss field. * sysdeps/i386/tls.h (struct tcbhead_t): Likewise.
2013-04-22Consolidate pthread_attr value validationSiddhesh Poyarekar1-17/+3
Define inline functions that wrap around validation for each of the pthread attributes to reduce duplication in code.
2013-04-11Extend i486 pthread_cond_timedwait to use futex syscall with absolute timeoutAndreas Schwab1-66/+315
2013-04-07sem_post.c: Include atomic.h.Carlos O'Donell1-0/+1
The sem_post.c file uses atomic functions without including atomic.h. Add `#include <atomic.h>' to the file to prevent any compile time warnings when other headers change and atomic.h isn't implicitly included. --- nptl/ 2013-04-07 Carlos O'Donell <carlos@redhat.com> * sysdeps/unix/sysv/linux/sem_post.c: Include atomic.h.
2013-04-04Fix static build when configured with --disable-hidden-pltSiddhesh Poyarekar1-1/+1
Fixes BZ #15337. Static builds fail with the following warning: /home/tools/glibc/glibc/nptl/../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S:80: undefined reference to `__GI___pthread_unwind' When the source is configured with --disable-hidden-plt. This is because the preprocessor conditional in cancellation.S only checks if the build is for SHARED, whereas hidden_def is defined appropriately only for a SHARED build that will have symbol versioning *and* hidden defs are enabled. The last case is false here.
2013-03-12Include atomic.h in generic lowlevellock.c.Carlos O'Donell1-1/+1
2013-03-04Rejigger i386 dl-sysdep.h files.Roland McGrath2-50/+31
2013-02-21Add priority inheritance futex support on sparc.David S. Miller1-0/+30
* sysdeps/unix/sysv/linux/sparc/lowlevellock.h (FUTEX_WAIT_REQUEUE_PI): Define. (FUTEX_CMP_REQUEUE_PI): Likewise. (lll_futex_wait_requeue_pi): Likewise. (lll_futex_timed_wait_requeue_pi): Likewise. (lll_futex_cmp_requeue_pi): Likewise.
2013-02-21nptl: Fix comment typo in fork.c.Carlos O'Donell1-1/+1
2013-02-18Fix build warnings in some test casesSiddhesh Poyarekar1-0/+1
Include stdlib.h to get declaration of exit(3)
2013-02-18FUTEX_*_REQUEUE_PI support for non-x86 codeSiddhesh Poyarekar2-0/+58
Add FUTEX_*_REQUEUE_PI support for the default C code and also add implementations for s-390 and ppc.
2013-02-14Remove bp-sym.h and BP_SYM uses from C code.Joseph Myers1-23/+22
2013-01-10Revert "Extend i486 pthread_cond_timedwait to use futex syscall with ↵Andreas Schwab1-315/+66
absolute timeout" This reverts commit 1bd57044e963abb886cb912beadea714815a3d5c.
2013-01-10Extend i486 pthread_cond_timedwait to use futex syscall with absolute timeoutAndreas Schwab1-66/+315
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S (__pthread_cond_timedwait): If possible use FUTEX_WAIT_BITSET to directly use absolute timeout.
2013-01-02Update copyright notices with scripts/update-copyrights.Joseph Myers295-300/+295
2013-01-01Add script to update copyright notices and reformat some to facilitate its use.Joseph Myers1-1/+1
2012-12-27Add sparc implementation of lll_futex_timed_wait_bitsetDavid S. Miller1-0/+13
nptl/ * sysdeps/unix/sysv/linux/sparc/lowlevellock.h (lll_futex_timed_wait_bitset): New macro.
2012-12-27[s390] Replace lll_futex_* assembly code with INTERNAL_SYSCALLSiddhesh Poyarekar1-74/+31
2012-12-08Fix some build warnings on s390xSiddhesh Poyarekar1-2/+2
2012-12-04Remove unused variable from powerpc sem_post.c.Joseph Myers1-2/+2
2012-11-26Cast to __intptr_t before casting pointer to int64H.J. Lu2-4/+6
2012-11-21Remove unused variable from sem_post.c.Joseph Myers1-1/+1
2012-11-05[S390,PPC] Implement FUTEX_WAIT_BITSET for timedwait functionsSiddhesh Poyarekar3-1/+48
Since the FUTEX_WAIT operation takes a relative timeout, the pthread_cond_timedwait and other timed function implementations have to get a relative timeout from the absolute timeout parameter it gets before it makes the futex syscall. This value is then converted back into an absolute timeout within the kernel. This is a waste and has hence been improved upon by a FUTEX_WAIT_BITSET operation (OR'd with FUTEX_CLOCK_REALTIME to make the kernel use the realtime clock instead of the default monotonic clock). This was implemented only in the x86 and sh assembly code and not in the C code. This patch implements support for FUTEX_WAIT_BITSET whenever available (since linux-2.6.29) for s390 and powerpc.
2012-11-03Fix coding style in sparc lowlevellock.hDavid S. Miller1-2/+2
nptl/ * sysdeps/unix/sysv/linux/sparc/lowlevellock.h (BUSY_WAIT_NOP): Add missing spaces. (__cpu_relax): Likewise.
2012-11-02Compile x86 rtld with -mno-sse -mno-mmxH.J. Lu1-2/+9
2012-10-28Define a BUSY_WAIT_NOP for sparc.David S. Miller5-0/+76
nptl/ * sysdeps/unix/sysv/linux/sparc/lowlevellock.h (BUSY_WAIT_NOP): Define when we have v9 instructions available. * sysdeps/unix/sysv/linux/sparc/sparc64/cpu_relax.S: New file. * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/cpu_relax.S: New file. * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/Makefile: New file. * sysdeps/unix/sysv/linux/sparc/sparc64/Makefile: Add cpu_relax to libpthread-routines.
2012-10-16Adjust mutex lock in condvar_cleanup if we got it from requeue_piSiddhesh Poyarekar4-4/+17
This completes the fix to bz #14652.
2012-10-10Fix formatting in nptl/sysdeps/pthread/pthread.h.Carlos O'Donell1-2/+2
The macro pthread_cleanup_push_defer_np in pthread.h has a misaligned line continuation marker. This marker was previously aligned, but recent changes have moved it out of alignment. This change realigns the marker. This also reduces the diff against the hppa version of pthread.h where the marker is aligned.
2012-10-10Take lock in pthread_cond_wait cleanup handler only when neededSiddhesh Poyarekar5-8/+65
[BZ #14652] When a thread waiting in pthread_cond_wait with a PI mutex is cancelled after it has returned successfully from the futex syscall but just before async cancellation is disabled, it enters its cancellation handler with the mutex held and simply calling a mutex_lock again will result in a deadlock. Hence, it is necessary to see if the thread owns the lock and try to lock it only if it doesn't.
2012-10-09Add missing magic to GLIBC_PROVIDES.Roland McGrath2-202/+0
2012-10-05Correct libthreadb register access for 64-bit sparc.David S. Miller1-2/+2
[BZ #14568] * sysdeps/sparc/tls.h (DB_THREAD_SELF_INCLUDE): Delete. (DB_THREAD_SELF): Use constants for the register offsets. Correct the case of a 64-bit debugger with a 32-bit inferior.
2012-10-05Unlock mutex before going back to waiting for PI mutexesSiddhesh Poyarekar4-171/+156
[BZ #14417] A futex call with FUTEX_WAIT_REQUEUE_PI returns with the mutex locked on success. If such a successful thread is pipped to the cond_lock by another spuriously woken waiter, it could be sent back to wait on the futex with the mutex lock held, thus causing a deadlock. So it is necessary that the thread relinquishes the mutex before going back to sleep.
2012-10-02Update copyright yearsH.J. Lu1-1/+1
2012-10-02Fix clone flag name in comment to CLONE_CHILD_CLEARTID.Siddhesh Poyarekar6-6/+6
2012-10-01Fix exception table for i386 pthread_cond_waitSiddhesh Poyarekar2-2/+22
[BZ #14477] Add an additional entry in the exception table to jump to __condvar_w_cleanup2 instead of __condvar_w_cleanup for PI mutexes when %ebx contains the address of the futex instead of the condition variable.
2012-09-25Fix bugs in powerpc pthread_once.Alan Modra1-5/+16
Ref gcc.gnu.org/bugzilla/show_bug.cgi?id=52839#c10 Release barriers are needed to ensure that any memory written by init_routine is seen by other threads before *once_control changes. In the case of clear_once_control we need to flush any partially written state.
2012-09-24Add "()" when casting to uint64_t for 64-bit storeH.J. Lu1-2/+2
2012-09-19Cast to uint64_t for 64-bit storeH.J. Lu1-2/+2
2012-09-14 [BZ #14583]Jeff Law1-1/+1
* sysdeps/pthread/pthread.h: Fix prototype of __sigsetjmp.
2012-09-13Remove unused __rtld_lock_init_recursive macroH.J. Lu1-12/+0
2012-09-01Remove __ASSUME_POSIX_CPU_TIMERS.Joseph Myers1-51/+2
2012-08-31Fix sem_post race (bug 14532).Joseph Myers1-2/+2
2012-08-17Make libio compile without _IO_MTSAFE_IO.Roland McGrath1-2/+2
2012-08-16Remove __ASSUME_POSIX_TIMERS.Joseph Myers10-523/+203
2012-08-15Optimize __libc_lock_lock and __libc_lock_trylock for MIPS.Maxim Kuvyrkov1-2/+8
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