diff options
| -rw-r--r-- | ChangeLog | 19 | ||||
| -rw-r--r-- | nptl/Makefile | 1 | ||||
| -rw-r--r-- | nptl/lll_timedlock_wait.c | 59 | ||||
| -rw-r--r-- | nptl/lll_timedwait_tid.c | 70 | ||||
| -rw-r--r-- | nptl/lowlevellock.c | 85 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc32/lll_timedlock_wait.c | 1 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc32/lll_timedwait_tid.c | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/i486/lll_timedlock_wait.c | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/i486/lll_timedwait_tid.c | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/i586/lll_timedlock_wait.c | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/i586/lll_timedwait_tid.c | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/i686/lll_timedlock_wait.c | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/i686/lll_timedwait_tid.c | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86_64/lll_timedlock_wait.c | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86_64/lll_timedwait_tid.c | 1 |
15 files changed, 160 insertions, 84 deletions
@@ -1,3 +1,22 @@ +2015-05-26 Roland McGrath <roland@hack.frob.com> + + * nptl/lowlevellock.c (__lll_timedlock_wait): Moved ... + * nptl/lll_timedlock_wait.c: ... to this new file. + * nptl/Makefile (libpthread-routines): Add it. + * nptl/lowlevellock.c (__lll_timedwait_tid): Moved ... + * nptl/lll_timedwait_tid.c: ... to this new file. + * nptl/Makefile (libpthread-routines): Add it. + * sysdeps/sparc/sparc32/lll_timedlock_wait.c: New file. + * sysdeps/sparc/sparc32/lll_timedwait_tid.c: New file. + * sysdeps/unix/sysv/linux/i386/i486/lll_timedlock_wait.c: New file. + * sysdeps/unix/sysv/linux/i386/i586/lll_timedlock_wait.c: New file. + * sysdeps/unix/sysv/linux/i386/i686/lll_timedlock_wait.c: New file. + * sysdeps/unix/sysv/linux/i386/i486/lll_timedwait_tid.c: New file. + * sysdeps/unix/sysv/linux/i386/i586/lll_timedwait_tid.c: New file. + * sysdeps/unix/sysv/linux/i386/i686/lll_timedwait_tid.c: New file. + * sysdeps/unix/sysv/linux/x86_64/lll_timedlock_wait.c: New file. + * sysdeps/unix/sysv/linux/x86_64/lll_timedwait_tid.c: New file. + 2015-05-26 Adhemerval Zanella <adhemerval.zanella@linaro.org> * sysdeps/unix/sysv/linux/aarch64/gettimeofday.c: Remove file. diff --git a/nptl/Makefile b/nptl/Makefile index 8e994527cb..3dd2944260 100644 --- a/nptl/Makefile +++ b/nptl/Makefile @@ -106,6 +106,7 @@ libpthread-routines = nptl-init vars events version \ pt-longjmp pt-cleanup\ cancellation \ lowlevellock lowlevelrobustlock \ + lll_timedlock_wait lll_timedwait_tid \ pt-fork pt-vfork \ ptw-write ptw-read ptw-close ptw-fcntl ptw-accept \ ptw-connect ptw-recv ptw-recvfrom ptw-recvmsg ptw-send \ diff --git a/nptl/lll_timedlock_wait.c b/nptl/lll_timedlock_wait.c new file mode 100644 index 0000000000..37cf08345b --- /dev/null +++ b/nptl/lll_timedlock_wait.c @@ -0,0 +1,59 @@ +/* Timed low level locking for pthread library. Generic futex-using version. + Copyright (C) 2003-2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <atomic.h> +#include <errno.h> +#include <lowlevellock.h> +#include <sys/time.h> + + +int +__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private) +{ + /* Reject invalid timeouts. */ + if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) + return EINVAL; + + /* Try locking. */ + while (atomic_exchange_acq (futex, 2) != 0) + { + struct timeval tv; + + /* Get the current time. */ + (void) __gettimeofday (&tv, NULL); + + /* Compute relative timeout. */ + struct timespec rt; + rt.tv_sec = abstime->tv_sec - tv.tv_sec; + rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; + if (rt.tv_nsec < 0) + { + rt.tv_nsec += 1000000000; + --rt.tv_sec; + } + + if (rt.tv_sec < 0) + return ETIMEDOUT; + + /* If *futex == 2, wait until woken or timeout. */ + lll_futex_timed_wait (futex, 2, &rt, private); + } + + return 0; +} diff --git a/nptl/lll_timedwait_tid.c b/nptl/lll_timedwait_tid.c new file mode 100644 index 0000000000..68b4857095 --- /dev/null +++ b/nptl/lll_timedwait_tid.c @@ -0,0 +1,70 @@ +/* Timed waiting for thread death. Generic futex-using version. + Copyright (C) 2003-2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <atomic.h> +#include <errno.h> +#include <lowlevellock.h> +#include <sys/time.h> + + +/* The kernel notifies a process which uses CLONE_CHILD_CLEARTID via futex + wake-up when the clone terminates. The memory location contains the + thread ID while the clone is running and is reset to zero by the kernel + afterwards. The kernel up to version 3.16.3 does not use the private futex + operations for futex wake-up when the clone terminates. */ +int +__lll_timedwait_tid (int *tidp, const struct timespec *abstime) +{ + int tid; + + if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) + return EINVAL; + + /* Repeat until thread terminated. */ + while ((tid = *tidp) != 0) + { + struct timeval tv; + struct timespec rt; + + /* Get the current time. */ + (void) __gettimeofday (&tv, NULL); + + /* Compute relative timeout. */ + rt.tv_sec = abstime->tv_sec - tv.tv_sec; + rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; + if (rt.tv_nsec < 0) + { + rt.tv_nsec += 1000000000; + --rt.tv_sec; + } + + /* Already timed out? */ + if (rt.tv_sec < 0) + return ETIMEDOUT; + + /* If *tidp == tid, wait until thread terminates or the wait times out. + The kernel up to version 3.16.3 does not use the private futex + operations for futex wake-up when the clone terminates. + */ + if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT) + return ETIMEDOUT; + } + + return 0; +} diff --git a/nptl/lowlevellock.c b/nptl/lowlevellock.c index 98c859f44e..7025b9e4fc 100644 --- a/nptl/lowlevellock.c +++ b/nptl/lowlevellock.c @@ -34,7 +34,7 @@ __lll_lock_wait_private (int *futex) } -/* These functions don't get included in libc.so */ +/* This function doesn't get included in libc. */ #if IS_IN (libpthread) void __lll_lock_wait (int *futex, int private) @@ -45,87 +45,4 @@ __lll_lock_wait (int *futex, int private) while (atomic_exchange_acq (futex, 2) != 0) lll_futex_wait (futex, 2, private); /* Wait if *futex == 2. */ } - - -int -__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private) -{ - /* Reject invalid timeouts. */ - if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) - return EINVAL; - - /* Try locking. */ - while (atomic_exchange_acq (futex, 2) != 0) - { - struct timeval tv; - - /* Get the current time. */ - (void) __gettimeofday (&tv, NULL); - - /* Compute relative timeout. */ - struct timespec rt; - rt.tv_sec = abstime->tv_sec - tv.tv_sec; - rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; - if (rt.tv_nsec < 0) - { - rt.tv_nsec += 1000000000; - --rt.tv_sec; - } - - if (rt.tv_sec < 0) - return ETIMEDOUT; - - /* If *futex == 2, wait until woken or timeout. */ - lll_futex_timed_wait (futex, 2, &rt, private); - } - - return 0; -} - - -/* The kernel notifies a process which uses CLONE_CHILD_CLEARTID via futex - wake-up when the clone terminates. The memory location contains the - thread ID while the clone is running and is reset to zero by the kernel - afterwards. The kernel up to version 3.16.3 does not use the private futex - operations for futex wake-up when the clone terminates. */ -int -__lll_timedwait_tid (int *tidp, const struct timespec *abstime) -{ - int tid; - - if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) - return EINVAL; - - /* Repeat until thread terminated. */ - while ((tid = *tidp) != 0) - { - struct timeval tv; - struct timespec rt; - - /* Get the current time. */ - (void) __gettimeofday (&tv, NULL); - - /* Compute relative timeout. */ - rt.tv_sec = abstime->tv_sec - tv.tv_sec; - rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; - if (rt.tv_nsec < 0) - { - rt.tv_nsec += 1000000000; - --rt.tv_sec; - } - - /* Already timed out? */ - if (rt.tv_sec < 0) - return ETIMEDOUT; - - /* If *tidp == tid, wait until thread terminates or the wait times out. - The kernel up to version 3.16.3 does not use the private futex - operations for futex wake-up when the clone terminates. - */ - if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT) - return ETIMEDOUT; - } - - return 0; -} #endif diff --git a/sysdeps/sparc/sparc32/lll_timedlock_wait.c b/sysdeps/sparc/sparc32/lll_timedlock_wait.c new file mode 100644 index 0000000000..c2c93faf1b --- /dev/null +++ b/sysdeps/sparc/sparc32/lll_timedlock_wait.c @@ -0,0 +1 @@ +/* __lll_timedlock_wait is in lowlevellock.c. */ diff --git a/sysdeps/sparc/sparc32/lll_timedwait_tid.c b/sysdeps/sparc/sparc32/lll_timedwait_tid.c new file mode 100644 index 0000000000..511608ead9 --- /dev/null +++ b/sysdeps/sparc/sparc32/lll_timedwait_tid.c @@ -0,0 +1 @@ +/* __lll_timedwait_tid is in lowlevellock.c. */ diff --git a/sysdeps/unix/sysv/linux/i386/i486/lll_timedlock_wait.c b/sysdeps/unix/sysv/linux/i386/i486/lll_timedlock_wait.c new file mode 100644 index 0000000000..f6875b8f89 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/i486/lll_timedlock_wait.c @@ -0,0 +1 @@ +/* __lll_timedlock_wait is in lowlevellock.S. */ diff --git a/sysdeps/unix/sysv/linux/i386/i486/lll_timedwait_tid.c b/sysdeps/unix/sysv/linux/i386/i486/lll_timedwait_tid.c new file mode 100644 index 0000000000..43900c6294 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/i486/lll_timedwait_tid.c @@ -0,0 +1 @@ +/* __lll_timedwait_tid is in lowlevellock.S. */ diff --git a/sysdeps/unix/sysv/linux/i386/i586/lll_timedlock_wait.c b/sysdeps/unix/sysv/linux/i386/i586/lll_timedlock_wait.c new file mode 100644 index 0000000000..fa4357bf5d --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/i586/lll_timedlock_wait.c @@ -0,0 +1 @@ +#include "../i486/lll_timedlock_wait.c" diff --git a/sysdeps/unix/sysv/linux/i386/i586/lll_timedwait_tid.c b/sysdeps/unix/sysv/linux/i386/i586/lll_timedwait_tid.c new file mode 100644 index 0000000000..1586104c08 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/i586/lll_timedwait_tid.c @@ -0,0 +1 @@ +#include "../i486/lll_timedwait_tid.c" diff --git a/sysdeps/unix/sysv/linux/i386/i686/lll_timedlock_wait.c b/sysdeps/unix/sysv/linux/i386/i686/lll_timedlock_wait.c new file mode 100644 index 0000000000..fa4357bf5d --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/i686/lll_timedlock_wait.c @@ -0,0 +1 @@ +#include "../i486/lll_timedlock_wait.c" diff --git a/sysdeps/unix/sysv/linux/i386/i686/lll_timedwait_tid.c b/sysdeps/unix/sysv/linux/i386/i686/lll_timedwait_tid.c new file mode 100644 index 0000000000..1586104c08 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/i686/lll_timedwait_tid.c @@ -0,0 +1 @@ +#include "../i486/lll_timedwait_tid.c" diff --git a/sysdeps/unix/sysv/linux/x86_64/lll_timedlock_wait.c b/sysdeps/unix/sysv/linux/x86_64/lll_timedlock_wait.c new file mode 100644 index 0000000000..f6875b8f89 --- /dev/null +++ b/sysdeps/unix/sysv/linux/x86_64/lll_timedlock_wait.c @@ -0,0 +1 @@ +/* __lll_timedlock_wait is in lowlevellock.S. */ diff --git a/sysdeps/unix/sysv/linux/x86_64/lll_timedwait_tid.c b/sysdeps/unix/sysv/linux/x86_64/lll_timedwait_tid.c new file mode 100644 index 0000000000..43900c6294 --- /dev/null +++ b/sysdeps/unix/sysv/linux/x86_64/lll_timedwait_tid.c @@ -0,0 +1 @@ +/* __lll_timedwait_tid is in lowlevellock.S. */ |