#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: man-pages-l10n VERSION\n"
"POT-Creation-Date: 2014-07-17 17:53+0900\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"

#. type: TH
#: man-pages/man2/futex.2:53
#, no-wrap
msgid "FUTEX"
msgstr ""

#. type: TH
#: man-pages/man2/futex.2:53
#, no-wrap
msgid "2014-05-21"
msgstr ""

#. type: TH
#: man-pages/man2/futex.2:53
#, no-wrap
msgid "Linux"
msgstr ""

#. type: TH
#: man-pages/man2/futex.2:53
#, no-wrap
msgid "Linux Programmer's Manual"
msgstr ""

#. type: SH
#: man-pages/man2/futex.2:54
#, no-wrap
msgid "NAME"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:56
msgid "futex - fast user-space locking"
msgstr ""

#. type: SH
#: man-pages/man2/futex.2:56
#, no-wrap
msgid "SYNOPSIS"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:61
#, no-wrap
msgid "B<#include E<lt>linux/futex.hE<gt>>\n"
"B<#include E<lt>sys/time.hE<gt>>\n"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:64
#, no-wrap
msgid ""
"B<int futex(int *>I<uaddr>B<, int >I<op>B<, int >I<val>B<, const struct "
"timespec *>I<timeout>B<,>\n"
msgstr ""

#.  int *? void *? u32 *?
#. type: Plain text
#: man-pages/man2/futex.2:67
#, no-wrap
msgid "B<          int *>I<uaddr2>B<, int >I<val3>B<);>\n"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:70
msgid "I<Note>: There is no glibc wrapper for this system call; see NOTES."
msgstr ""

#. type: SH
#: man-pages/man2/futex.2:70
#, no-wrap
msgid "DESCRIPTION"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:86
msgid ""
"The B<futex>()  system call provides a method for a program to wait for a "
"value at a given address to change, and a method to wake up anyone waiting "
"on a particular address (while the addresses for the same memory in separate "
"processes may not be equal, the kernel maps them internally so the same "
"memory mapped in different locations will correspond for B<futex>()  calls). "
" This system call is typically used to implement the contended case of a "
"lock in shared memory, as described in B<futex>(7)."
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:93
msgid ""
"When a B<futex>(7)  operation did not finish uncontended in user space, a "
"call needs to be made to the kernel to arbitrate.  Arbitration can either "
"mean putting the calling process to sleep or, conversely, waking a waiting "
"process."
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:100
msgid ""
"Callers of this function are expected to adhere to the semantics as set out "
"in B<futex>(7).  As these semantics involve writing nonportable assembly "
"instructions, this in turn probably means that most users will in fact be "
"library authors and not general application developers."
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:108
msgid ""
"The I<uaddr> argument needs to point to an aligned integer which stores the "
"counter.  The operation to execute is passed via the I<op> argument, along "
"with a value I<val>."
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:110
msgid "Five operations are currently defined:"
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:110 man-pages/man2/futex.2:223
#, no-wrap
msgid "B<FUTEX_WAIT>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:133
msgid ""
"This operation atomically verifies that the futex address I<uaddr> still "
"contains the value I<val>, and sleeps awaiting B<FUTEX_WAKE> on this futex "
"address.  If the I<timeout> argument is non-NULL, its contents specify the "
"duration of the wait.  (This interval will be rounded up to the system clock "
"granularity, and kernel scheduling delays mean that the blocking interval "
"may overrun by a small amount.)  If I<timeout> is NULL, the call blocks "
"indefinitely.  The arguments I<uaddr2> and I<val3> are ignored."
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:141
msgid ""
"For B<futex>(7), this call is executed if decrementing the count gave a "
"negative value (indicating contention), and will sleep until another process "
"releases the futex and executes the B<FUTEX_WAKE> operation."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:141 man-pages/man2/futex.2:229
#, no-wrap
msgid "B<FUTEX_WAKE>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:152
msgid ""
"This operation wakes at most I<val> processes waiting on this futex address "
"(i.e., inside B<FUTEX_WAIT>).  The arguments I<timeout>, I<uaddr2> and "
"I<val3> are ignored."
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:158
msgid ""
"For B<futex>(7), this is executed if incrementing the count showed that "
"there were waiters, once the futex value has been set to 1 (indicating that "
"it is available)."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:158
#, no-wrap
msgid "B<FUTEX_FD> (present up to and including Linux 2.6.25)"
msgstr ""

#.  , suitable for .BR poll (2).
#. type: Plain text
#: man-pages/man2/futex.2:174
msgid ""
"To support asynchronous wakeups, this operation associates a file descriptor "
"with a futex.  If another process executes a B<FUTEX_WAKE>, the process will "
"receive the signal number that was passed in I<val>.  The calling process "
"must close the returned file descriptor after use.  The arguments "
"I<timeout>, I<uaddr2> and I<val3> are ignored."
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:179
msgid ""
"To prevent race conditions, the caller should test if the futex has been "
"upped after B<FUTEX_FD> returns."
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:183
msgid ""
"Because it was inherently racy, B<FUTEX_FD> has been removed from Linux 2.6."
"26 onward."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:183
#, no-wrap
msgid "B<FUTEX_REQUEUE> (since Linux 2.5.70)"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:198
msgid ""
"This operation was introduced in order to avoid a \"thundering herd\" effect "
"when B<FUTEX_WAKE> is used and all processes woken up need to acquire "
"another futex.  This call wakes up I<val> processes, and requeues all other "
"waiters on the futex at address I<uaddr2>.  The arguments I<timeout> and "
"I<val3> are ignored."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:198
#, no-wrap
msgid "B<FUTEX_CMP_REQUEUE> (since Linux 2.6.7)"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:216
msgid ""
"There was a race in the intended use of B<FUTEX_REQUEUE>, so "
"B<FUTEX_CMP_REQUEUE> was introduced.  This is similar to B<FUTEX_REQUEUE>, "
"but first checks whether the location I<uaddr> still contains the value "
"I<val3>.  If not, the operation fails with the error B<EAGAIN>.  The "
"argument I<timeout> is ignored."
msgstr ""

#. type: SH
#: man-pages/man2/futex.2:216
#, no-wrap
msgid "RETURN VALUE"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:223
msgid ""
"In the event of an error, all operations return -1, and set I<errno> to "
"indicate the error.  The return value on success depends on the operation, "
"as described in the following list:"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:229
msgid ""
"Returns 0 if the process was woken by a B<FUTEX_WAKE> call.  See ERRORS for "
"the various possible error returns."
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:232 man-pages/man2/futex.2:238 man-pages/man2/futex.2:241
msgid "Returns the number of processes woken up."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:232
#, no-wrap
msgid "B<FUTEX_FD>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:235
msgid "Returns the new file descriptor associated with the futex."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:235
#, no-wrap
msgid "B<FUTEX_REQUEUE>"
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:238
#, no-wrap
msgid "B<FUTEX_CMP_REQUEUE>"
msgstr ""

#. type: SH
#: man-pages/man2/futex.2:241
#, no-wrap
msgid "ERRORS"
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:242
#, no-wrap
msgid "B<EACCES>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:245
msgid "No read access to futex memory."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:245
#, no-wrap
msgid "B<EAGAIN>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:256
msgid ""
"B<FUTEX_CMP_REQUEUE> detected that the value pointed to by I<uaddr> is not "
"equal to the expected value I<val3>.  (This probably indicates a race; use "
"the safe B<FUTEX_WAKE> now.)"
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:256
#, no-wrap
msgid "B<EFAULT>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:261
msgid "Error retrieving I<timeout> information from user space."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:261
#, no-wrap
msgid "B<EINTR>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:268
msgid ""
"A B<FUTEX_WAIT> operation was interrupted by a signal (see B<signal>(7))  or "
"a spurious wakeup."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:268
#, no-wrap
msgid "B<EINVAL>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:271
msgid "Invalid argument."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:271
#, no-wrap
msgid "B<ENFILE>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:274
msgid "The system limit on the total number of open files has been reached."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:274
#, no-wrap
msgid "B<ENOSYS>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:278
msgid "Invalid operation specified in I<op>."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:278
#, no-wrap
msgid "B<ETIMEDOUT>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:283
msgid "Timeout during the B<FUTEX_WAIT> operation."
msgstr ""

#. type: TP
#: man-pages/man2/futex.2:283
#, no-wrap
msgid "B<EWOULDBLOCK>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:293
msgid ""
"I<op> was B<FUTEX_WAIT> and the value pointed to by I<uaddr> was not equal "
"to the expected value I<val> at the time of the call."
msgstr ""

#. type: SH
#: man-pages/man2/futex.2:293
#, no-wrap
msgid "VERSIONS"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:303
msgid ""
"Initial futex support was merged in Linux 2.5.7 but with different semantics "
"from what was described above.  A 4-argument system call with the semantics "
"described in this page was introduced in Linux 2.5.40.  In Linux 2.5.70, one "
"argument was added.  In Linux 2.6.7, a sixth argument was added\\(emmessy, "
"especially on the s390 architecture."
msgstr ""

#. type: SH
#: man-pages/man2/futex.2:303
#, no-wrap
msgid "CONFORMING TO"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:305
msgid "This system call is Linux-specific."
msgstr ""

#. type: SH
#: man-pages/man2/futex.2:305
#, no-wrap
msgid "NOTES"
msgstr ""

#.  .SH "AUTHORS"
#.  .PP
#.  Futexes were designed and worked on by
#.  Hubertus Franke (IBM Thomas J. Watson Research Center),
#.  Matthew Kirkwood, Ingo Molnar (Red Hat)
#.  and Rusty Russell (IBM Linux Technology Center).
#.  This page written by bert hubert.
#. type: Plain text
#: man-pages/man2/futex.2:319
msgid ""
"To reiterate, bare futexes are not intended as an easy-to-use abstraction "
"for end-users.  (There is no wrapper function for this system call in glibc."
")  Implementors are expected to be assembly literate and to have read the "
"sources of the futex user-space library referenced below."
msgstr ""

#. type: SH
#: man-pages/man2/futex.2:319
#, no-wrap
msgid "SEE ALSO"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:322
msgid "B<restart_syscall>(2), B<futex>(7)"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:325
msgid ""
"I<Fuss, Futexes and Furwocks: Fast Userlevel Locking in Linux> (proceedings "
"of the Ottawa Linux Symposium 2002), online at"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:328
msgid ""
"E<.UR http://kernel.org\\:/doc\\:/ols\\:/2002\\:/ols2002-pages-479-495.pdf> "
"E<.UE>"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:330
msgid "Futex example library, futex-*.tar.bz2 at"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:333
msgid ""
"E<.UR ftp://ftp.kernel.org\\:/pub\\:/linux\\:/kernel\\:/people\\:/rusty/> E<."
"UE>"
msgstr ""

#. type: SH
#: man-pages/man2/futex.2:333
#, no-wrap
msgid "COLOPHON"
msgstr ""

#. type: Plain text
#: man-pages/man2/futex.2:341
msgid ""
"This page is part of release 3.70 of the Linux I<man-pages> project.  A "
"description of the project, information about reporting bugs, and the latest "
"version of this page, can be found at \\%http://www.kernel.org/doc/man-pages/"
"."
msgstr ""