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|
# Spanish translation of manpages
# This file is distributed under the same license as the manpages-l10n package.
# Copyright © of this file:
msgid ""
msgstr ""
"Project-Id-Version: manpages-l10n 4.11.0\n"
"POT-Creation-Date: 2024-06-01 05:41+0200\n"
"PO-Revision-Date: 2021-09-03 21:22+0200\n"
"Last-Translator: Automatically generated\n"
"Language-Team: Spanish <debian-l10n-spanish@lists.debian.org>\n"
"Language: es\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
#. type: TH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "AIO"
msgstr ""
#. type: TH
#: archlinux debian-unstable opensuse-tumbleweed
#, no-wrap
msgid "2024-05-02"
msgstr "2 Mayo 2024"
#. type: TH
#: archlinux debian-unstable
#, no-wrap
msgid "Linux man-pages 6.8"
msgstr "Páginas de Manual de Linux 6.8"
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NAME"
msgstr "NOMBRE"
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "aio - POSIX asynchronous I/O overview"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "DESCRIPTION"
msgstr "DESCRIPCIÓN"
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The POSIX asynchronous I/O (AIO) interface allows applications to initiate "
"one or more I/O operations that are performed asynchronously (i.e., in the "
"background). The application can elect to be notified of completion of the "
"I/O operation in a variety of ways: by delivery of a signal, by "
"instantiation of a thread, or no notification at all."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The POSIX AIO interface consists of the following functions:"
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<aio_read>(3)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Enqueue a read request. This is the asynchronous analog of B<read>(2)."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<aio_write>(3)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Enqueue a write request. This is the asynchronous analog of B<write>(2)."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<aio_fsync>(3)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Enqueue a sync request for the I/O operations on a file descriptor. This is "
"the asynchronous analog of B<fsync>(2) and B<fdatasync>(2)."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<aio_error>(3)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Obtain the error status of an enqueued I/O request."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<aio_return>(3)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Obtain the return status of a completed I/O request."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<aio_suspend>(3)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Suspend the caller until one or more of a specified set of I/O requests "
"completes."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<aio_cancel>(3)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Attempt to cancel outstanding I/O requests on a specified file descriptor."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<lio_listio>(3)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Enqueue multiple I/O requests using a single function call."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The I<aiocb> (\"asynchronous I/O control block\") structure defines "
"parameters that control an I/O operation. An argument of this type is "
"employed with all of the functions listed above. This structure has the "
"following form:"
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, no-wrap
msgid ""
"#include E<lt>aiocb.hE<gt>\n"
"\\&\n"
"struct aiocb {\n"
" /* The order of these fields is implementation-dependent */\n"
"\\&\n"
" int aio_fildes; /* File descriptor */\n"
" off_t aio_offset; /* File offset */\n"
" volatile void *aio_buf; /* Location of buffer */\n"
" size_t aio_nbytes; /* Length of transfer */\n"
" int aio_reqprio; /* Request priority */\n"
" struct sigevent aio_sigevent; /* Notification method */\n"
" int aio_lio_opcode; /* Operation to be performed;\n"
" lio_listio() only */\n"
"\\&\n"
" /* Various implementation-internal fields not shown */\n"
"};\n"
"\\&\n"
"/* Operation codes for \\[aq]aio_lio_opcode\\[aq]: */\n"
"\\&\n"
"enum { LIO_READ, LIO_WRITE, LIO_NOP };\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The fields of this structure are as follows:"
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<aio_fildes>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The file descriptor on which the I/O operation is to be performed."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<aio_offset>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "This is the file offset at which the I/O operation is to be performed."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<aio_buf>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "This is the buffer used to transfer data for a read or write operation."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<aio_nbytes>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "This is the size of the buffer pointed to by I<aio_buf>."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<aio_reqprio>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This field specifies a value that is subtracted from the calling thread's "
"real-time priority in order to determine the priority for execution of this "
"I/O request (see B<pthread_setschedparam>(3)). The specified value must be "
"between 0 and the value returned by I<sysconf(_SC_AIO_PRIO_DELTA_MAX)>. "
"This field is ignored for file synchronization operations."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<aio_sigevent>"
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
msgid ""
"This field is a structure that specifies how the caller is to be notified "
"when the asynchronous I/O operation completes. Possible values for "
"I<aio_sigevent.sigev_notify> are B<SIGEV_NONE>, B<SIGEV_SIGNAL>, and "
"B<SIGEV_THREAD>. See B<sigevent>(3type) for further details."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "I<aio_lio_opcode>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The type of operation to be performed; used only for B<lio_listio>(3)."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"In addition to the standard functions listed above, the GNU C library "
"provides the following extension to the POSIX AIO API:"
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<aio_init>(3)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Set parameters for tuning the behavior of the glibc POSIX AIO implementation."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "ERRORS"
msgstr "ERRORES"
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EINVAL>"
msgstr "B<EINVAL>"
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The I<aio_reqprio> field of the I<aiocb> structure was less than 0, or was "
"greater than the limit returned by the call "
"I<sysconf(_SC_AIO_PRIO_DELTA_MAX)>."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "STANDARDS"
msgstr "ESTÁNDARES"
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "POSIX.1-2008."
msgstr "POSIX.1-2008."
#. type: SH
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "HISTORY"
msgstr "HISTORIAL"
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
#| msgid "POSIX.1-2001."
msgid "POSIX.1-2001. glibc 2.1."
msgstr "POSIX.1-2001."
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NOTES"
msgstr "NOTAS"
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"It is a good idea to zero out the control block buffer before use (see "
"B<memset>(3)). The control block buffer and the buffer pointed to by "
"I<aio_buf> must not be changed while the I/O operation is in progress. "
"These buffers must remain valid until the I/O operation completes."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Simultaneous asynchronous read or write operations using the same I<aiocb> "
"structure yield undefined results."
msgstr ""
#. http://lse.sourceforge.net/io/aio.html
#. http://lse.sourceforge.net/io/aionotes.txt
#. http://lwn.net/Articles/148755/
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The current Linux POSIX AIO implementation is provided in user space by "
"glibc. This has a number of limitations, most notably that maintaining "
"multiple threads to perform I/O operations is expensive and scales poorly. "
"Work has been in progress for some time on a kernel state-machine-based "
"implementation of asynchronous I/O (see B<io_submit>(2), B<io_setup>(2), "
"B<io_cancel>(2), B<io_destroy>(2), B<io_getevents>(2)), but this "
"implementation hasn't yet matured to the point where the POSIX AIO "
"implementation can be completely reimplemented using the kernel system calls."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "EXAMPLES"
msgstr "EJEMPLOS"
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The program below opens each of the files named in its command-line "
"arguments and queues a request on the resulting file descriptor using "
"B<aio_read>(3). The program then loops, periodically monitoring each of the "
"I/O operations that is still in progress using B<aio_error>(3). Each of the "
"I/O requests is set up to provide notification by delivery of a signal. "
"After all I/O requests have completed, the program retrieves their status "
"using B<aio_return>(3)."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The B<SIGQUIT> signal (generated by typing control-\\e) causes the program "
"to request cancelation of each of the outstanding requests using "
"B<aio_cancel>(3)."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Here is an example of what we might see when running this program. In this "
"example, the program queues two requests to standard input, and these are "
"satisfied by two lines of input containing \"abc\" and \"x\"."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"$ B<./a.out /dev/stdin /dev/stdin>\n"
"opened /dev/stdin on descriptor 3\n"
"opened /dev/stdin on descriptor 4\n"
"aio_error():\n"
" for request 0 (descriptor 3): In progress\n"
" for request 1 (descriptor 4): In progress\n"
"B<abc>\n"
"I/O completion signal received\n"
"aio_error():\n"
" for request 0 (descriptor 3): I/O succeeded\n"
" for request 1 (descriptor 4): In progress\n"
"aio_error():\n"
" for request 1 (descriptor 4): In progress\n"
"B<x>\n"
"I/O completion signal received\n"
"aio_error():\n"
" for request 1 (descriptor 4): I/O succeeded\n"
"All I/O requests completed\n"
"aio_return():\n"
" for request 0 (descriptor 3): 4\n"
" for request 1 (descriptor 4): 2\n"
msgstr ""
#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Program source"
msgstr "Código fuente"
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, no-wrap
msgid ""
"#include E<lt>fcntl.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>unistd.hE<gt>\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>errno.hE<gt>\n"
"#include E<lt>aio.hE<gt>\n"
"#include E<lt>signal.hE<gt>\n"
"\\&\n"
"#define BUF_SIZE 20 /* Size of buffers for read operations */\n"
"\\&\n"
"#define errExit(msg) do { perror(msg); exit(EXIT_FAILURE); } while (0)\n"
"\\&\n"
"struct ioRequest { /* Application-defined structure for tracking\n"
" I/O requests */\n"
" int reqNum;\n"
" int status;\n"
" struct aiocb *aiocbp;\n"
"};\n"
"\\&\n"
"static volatile sig_atomic_t gotSIGQUIT = 0;\n"
" /* On delivery of SIGQUIT, we attempt to\n"
" cancel all outstanding I/O requests */\n"
"\\&\n"
"static void /* Handler for SIGQUIT */\n"
"quitHandler(int sig)\n"
"{\n"
" gotSIGQUIT = 1;\n"
"}\n"
"\\&\n"
"#define IO_SIGNAL SIGUSR1 /* Signal used to notify I/O completion */\n"
"\\&\n"
"static void /* Handler for I/O completion signal */\n"
"aioSigHandler(int sig, siginfo_t *si, void *ucontext)\n"
"{\n"
" if (si-E<gt>si_code == SI_ASYNCIO) {\n"
" write(STDOUT_FILENO, \"I/O completion signal received\\en\", 31);\n"
"\\&\n"
" /* The corresponding ioRequest structure would be available as\n"
" struct ioRequest *ioReq = si-E<gt>si_value.sival_ptr;\n"
" and the file descriptor would then be available via\n"
" ioReq-E<gt>aiocbp-E<gt>aio_fildes */\n"
" }\n"
"}\n"
"\\&\n"
"int\n"
"main(int argc, char *argv[])\n"
"{\n"
" struct sigaction sa;\n"
" int s;\n"
" int numReqs; /* Total number of queued I/O requests */\n"
" int openReqs; /* Number of I/O requests still in progress */\n"
"\\&\n"
" if (argc E<lt> 2) {\n"
" fprintf(stderr, \"Usage: %s E<lt>pathnameE<gt> E<lt>pathnameE<gt>...\\en\",\n"
" argv[0]);\n"
" exit(EXIT_FAILURE);\n"
" }\n"
"\\&\n"
" numReqs = argc - 1;\n"
"\\&\n"
" /* Allocate our arrays. */\n"
"\\&\n"
" struct ioRequest *ioList = calloc(numReqs, sizeof(*ioList));\n"
" if (ioList == NULL)\n"
" errExit(\"calloc\");\n"
"\\&\n"
" struct aiocb *aiocbList = calloc(numReqs, sizeof(*aiocbList));\n"
" if (aiocbList == NULL)\n"
" errExit(\"calloc\");\n"
"\\&\n"
" /* Establish handlers for SIGQUIT and the I/O completion signal. */\n"
"\\&\n"
" sa.sa_flags = SA_RESTART;\n"
" sigemptyset(&sa.sa_mask);\n"
"\\&\n"
" sa.sa_handler = quitHandler;\n"
" if (sigaction(SIGQUIT, &sa, NULL) == -1)\n"
" errExit(\"sigaction\");\n"
"\\&\n"
" sa.sa_flags = SA_RESTART | SA_SIGINFO;\n"
" sa.sa_sigaction = aioSigHandler;\n"
" if (sigaction(IO_SIGNAL, &sa, NULL) == -1)\n"
" errExit(\"sigaction\");\n"
"\\&\n"
" /* Open each file specified on the command line, and queue\n"
" a read request on the resulting file descriptor. */\n"
"\\&\n"
" for (size_t j = 0; j E<lt> numReqs; j++) {\n"
" ioList[j].reqNum = j;\n"
" ioList[j].status = EINPROGRESS;\n"
" ioList[j].aiocbp = &aiocbList[j];\n"
"\\&\n"
" ioList[j].aiocbp-E<gt>aio_fildes = open(argv[j + 1], O_RDONLY);\n"
" if (ioList[j].aiocbp-E<gt>aio_fildes == -1)\n"
" errExit(\"open\");\n"
" printf(\"opened %s on descriptor %d\\en\", argv[j + 1],\n"
" ioList[j].aiocbp-E<gt>aio_fildes);\n"
"\\&\n"
" ioList[j].aiocbp-E<gt>aio_buf = malloc(BUF_SIZE);\n"
" if (ioList[j].aiocbp-E<gt>aio_buf == NULL)\n"
" errExit(\"malloc\");\n"
"\\&\n"
" ioList[j].aiocbp-E<gt>aio_nbytes = BUF_SIZE;\n"
" ioList[j].aiocbp-E<gt>aio_reqprio = 0;\n"
" ioList[j].aiocbp-E<gt>aio_offset = 0;\n"
" ioList[j].aiocbp-E<gt>aio_sigevent.sigev_notify = SIGEV_SIGNAL;\n"
" ioList[j].aiocbp-E<gt>aio_sigevent.sigev_signo = IO_SIGNAL;\n"
" ioList[j].aiocbp-E<gt>aio_sigevent.sigev_value.sival_ptr =\n"
" &ioList[j];\n"
"\\&\n"
" s = aio_read(ioList[j].aiocbp);\n"
" if (s == -1)\n"
" errExit(\"aio_read\");\n"
" }\n"
"\\&\n"
" openReqs = numReqs;\n"
"\\&\n"
" /* Loop, monitoring status of I/O requests. */\n"
"\\&\n"
" while (openReqs E<gt> 0) {\n"
" sleep(3); /* Delay between each monitoring step */\n"
"\\&\n"
" if (gotSIGQUIT) {\n"
"\\&\n"
" /* On receipt of SIGQUIT, attempt to cancel each of the\n"
" outstanding I/O requests, and display status returned\n"
" from the cancelation requests. */\n"
"\\&\n"
" printf(\"got SIGQUIT; canceling I/O requests: \\en\");\n"
"\\&\n"
" for (size_t j = 0; j E<lt> numReqs; j++) {\n"
" if (ioList[j].status == EINPROGRESS) {\n"
" printf(\" Request %zu on descriptor %d:\", j,\n"
" ioList[j].aiocbp-E<gt>aio_fildes);\n"
" s = aio_cancel(ioList[j].aiocbp-E<gt>aio_fildes,\n"
" ioList[j].aiocbp);\n"
" if (s == AIO_CANCELED)\n"
" printf(\"I/O canceled\\en\");\n"
" else if (s == AIO_NOTCANCELED)\n"
" printf(\"I/O not canceled\\en\");\n"
" else if (s == AIO_ALLDONE)\n"
" printf(\"I/O all done\\en\");\n"
" else\n"
" perror(\"aio_cancel\");\n"
" }\n"
" }\n"
"\\&\n"
" gotSIGQUIT = 0;\n"
" }\n"
"\\&\n"
" /* Check the status of each I/O request that is still\n"
" in progress. */\n"
"\\&\n"
" printf(\"aio_error():\\en\");\n"
" for (size_t j = 0; j E<lt> numReqs; j++) {\n"
" if (ioList[j].status == EINPROGRESS) {\n"
" printf(\" for request %zu (descriptor %d): \",\n"
" j, ioList[j].aiocbp-E<gt>aio_fildes);\n"
" ioList[j].status = aio_error(ioList[j].aiocbp);\n"
"\\&\n"
" switch (ioList[j].status) {\n"
" case 0:\n"
" printf(\"I/O succeeded\\en\");\n"
" break;\n"
" case EINPROGRESS:\n"
" printf(\"In progress\\en\");\n"
" break;\n"
" case ECANCELED:\n"
" printf(\"Canceled\\en\");\n"
" break;\n"
" default:\n"
" perror(\"aio_error\");\n"
" break;\n"
" }\n"
"\\&\n"
" if (ioList[j].status != EINPROGRESS)\n"
" openReqs--;\n"
" }\n"
" }\n"
" }\n"
"\\&\n"
" printf(\"All I/O requests completed\\en\");\n"
"\\&\n"
" /* Check status return of all I/O requests. */\n"
"\\&\n"
" printf(\"aio_return():\\en\");\n"
" for (size_t j = 0; j E<lt> numReqs; j++) {\n"
" ssize_t s;\n"
"\\&\n"
" s = aio_return(ioList[j].aiocbp);\n"
" printf(\" for request %zu (descriptor %d): %zd\\en\",\n"
" j, ioList[j].aiocbp-E<gt>aio_fildes, s);\n"
" }\n"
"\\&\n"
" exit(EXIT_SUCCESS);\n"
"}\n"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SEE ALSO"
msgstr "VÉASE TAMBIÉN"
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<io_cancel>(2), B<io_destroy>(2), B<io_getevents>(2), B<io_setup>(2), "
"B<io_submit>(2), B<aio_cancel>(3), B<aio_error>(3), B<aio_init>(3), "
"B<aio_read>(3), B<aio_return>(3), B<aio_write>(3), B<lio_listio>(3)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"\"Asynchronous I/O Support in Linux 2.5\", Bhattacharya, Pratt, Pulavarty, "
"and Morgan, Proceedings of the Linux Symposium, 2003, E<.UR https://www."
"kernel.org/doc/ols/2003/ols2003-pages-351-366.pdf> E<.UE>"
msgstr ""
#. type: TH
#: debian-bookworm
#, no-wrap
msgid "2023-02-05"
msgstr "5 Febrero 2023"
#. type: TH
#: debian-bookworm
#, no-wrap
msgid "Linux man-pages 6.03"
msgstr "Páginas de Manual de Linux 6.03"
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "#include E<lt>aiocb.hE<gt>\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"struct aiocb {\n"
" /* The order of these fields is implementation-dependent */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" int aio_fildes; /* File descriptor */\n"
" off_t aio_offset; /* File offset */\n"
" volatile void *aio_buf; /* Location of buffer */\n"
" size_t aio_nbytes; /* Length of transfer */\n"
" int aio_reqprio; /* Request priority */\n"
" struct sigevent aio_sigevent; /* Notification method */\n"
" int aio_lio_opcode; /* Operation to be performed;\n"
" lio_listio() only */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" /* Various implementation-internal fields not shown */\n"
"};\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "/* Operation codes for \\[aq]aio_lio_opcode\\[aq]: */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "enum { LIO_READ, LIO_WRITE, LIO_NOP };\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
msgid ""
"This field is a structure that specifies how the caller is to be notified "
"when the asynchronous I/O operation completes. Possible values for "
"I<aio_sigevent.sigev_notify> are B<SIGEV_NONE>, B<SIGEV_SIGNAL>, and "
"B<SIGEV_THREAD>. See B<sigevent>(7) for further details."
msgstr ""
#. type: SH
#: debian-bookworm
#, no-wrap
msgid "VERSIONS"
msgstr "VERSIONES"
#. type: Plain text
#: debian-bookworm
msgid "The POSIX AIO interfaces are provided by glibc since glibc 2.1."
msgstr ""
#. type: Plain text
#: debian-bookworm
msgid "POSIX.1-2001, POSIX.1-2008."
msgstr "POSIX.1-2001, POSIX.1-2008."
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"#include E<lt>fcntl.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>unistd.hE<gt>\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>errno.hE<gt>\n"
"#include E<lt>aio.hE<gt>\n"
"#include E<lt>signal.hE<gt>\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "#define BUF_SIZE 20 /* Size of buffers for read operations */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "#define errExit(msg) do { perror(msg); exit(EXIT_FAILURE); } while (0)\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"struct ioRequest { /* Application-defined structure for tracking\n"
" I/O requests */\n"
" int reqNum;\n"
" int status;\n"
" struct aiocb *aiocbp;\n"
"};\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"static volatile sig_atomic_t gotSIGQUIT = 0;\n"
" /* On delivery of SIGQUIT, we attempt to\n"
" cancel all outstanding I/O requests */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"static void /* Handler for SIGQUIT */\n"
"quitHandler(int sig)\n"
"{\n"
" gotSIGQUIT = 1;\n"
"}\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "#define IO_SIGNAL SIGUSR1 /* Signal used to notify I/O completion */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"static void /* Handler for I/O completion signal */\n"
"aioSigHandler(int sig, siginfo_t *si, void *ucontext)\n"
"{\n"
" if (si-E<gt>si_code == SI_ASYNCIO) {\n"
" write(STDOUT_FILENO, \"I/O completion signal received\\en\", 31);\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" /* The corresponding ioRequest structure would be available as\n"
" struct ioRequest *ioReq = si-E<gt>si_value.sival_ptr;\n"
" and the file descriptor would then be available via\n"
" ioReq-E<gt>aiocbp-E<gt>aio_fildes */\n"
" }\n"
"}\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"int\n"
"main(int argc, char *argv[])\n"
"{\n"
" struct sigaction sa;\n"
" int s;\n"
" int numReqs; /* Total number of queued I/O requests */\n"
" int openReqs; /* Number of I/O requests still in progress */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" if (argc E<lt> 2) {\n"
" fprintf(stderr, \"Usage: %s E<lt>pathnameE<gt> E<lt>pathnameE<gt>...\\en\",\n"
" argv[0]);\n"
" exit(EXIT_FAILURE);\n"
" }\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " numReqs = argc - 1;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " /* Allocate our arrays. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" struct ioRequest *ioList = calloc(numReqs, sizeof(*ioList));\n"
" if (ioList == NULL)\n"
" errExit(\"calloc\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" struct aiocb *aiocbList = calloc(numReqs, sizeof(*aiocbList));\n"
" if (aiocbList == NULL)\n"
" errExit(\"calloc\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " /* Establish handlers for SIGQUIT and the I/O completion signal. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" sa.sa_flags = SA_RESTART;\n"
" sigemptyset(&sa.sa_mask);\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" sa.sa_handler = quitHandler;\n"
" if (sigaction(SIGQUIT, &sa, NULL) == -1)\n"
" errExit(\"sigaction\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" sa.sa_flags = SA_RESTART | SA_SIGINFO;\n"
" sa.sa_sigaction = aioSigHandler;\n"
" if (sigaction(IO_SIGNAL, &sa, NULL) == -1)\n"
" errExit(\"sigaction\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" /* Open each file specified on the command line, and queue\n"
" a read request on the resulting file descriptor. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" for (size_t j = 0; j E<lt> numReqs; j++) {\n"
" ioList[j].reqNum = j;\n"
" ioList[j].status = EINPROGRESS;\n"
" ioList[j].aiocbp = &aiocbList[j];\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" ioList[j].aiocbp-E<gt>aio_fildes = open(argv[j + 1], O_RDONLY);\n"
" if (ioList[j].aiocbp-E<gt>aio_fildes == -1)\n"
" errExit(\"open\");\n"
" printf(\"opened %s on descriptor %d\\en\", argv[j + 1],\n"
" ioList[j].aiocbp-E<gt>aio_fildes);\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" ioList[j].aiocbp-E<gt>aio_buf = malloc(BUF_SIZE);\n"
" if (ioList[j].aiocbp-E<gt>aio_buf == NULL)\n"
" errExit(\"malloc\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" ioList[j].aiocbp-E<gt>aio_nbytes = BUF_SIZE;\n"
" ioList[j].aiocbp-E<gt>aio_reqprio = 0;\n"
" ioList[j].aiocbp-E<gt>aio_offset = 0;\n"
" ioList[j].aiocbp-E<gt>aio_sigevent.sigev_notify = SIGEV_SIGNAL;\n"
" ioList[j].aiocbp-E<gt>aio_sigevent.sigev_signo = IO_SIGNAL;\n"
" ioList[j].aiocbp-E<gt>aio_sigevent.sigev_value.sival_ptr =\n"
" &ioList[j];\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" s = aio_read(ioList[j].aiocbp);\n"
" if (s == -1)\n"
" errExit(\"aio_read\");\n"
" }\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " openReqs = numReqs;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " /* Loop, monitoring status of I/O requests. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" while (openReqs E<gt> 0) {\n"
" sleep(3); /* Delay between each monitoring step */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " if (gotSIGQUIT) {\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" /* On receipt of SIGQUIT, attempt to cancel each of the\n"
" outstanding I/O requests, and display status returned\n"
" from the cancelation requests. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " printf(\"got SIGQUIT; canceling I/O requests: \\en\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" for (size_t j = 0; j E<lt> numReqs; j++) {\n"
" if (ioList[j].status == EINPROGRESS) {\n"
" printf(\" Request %zu on descriptor %d:\", j,\n"
" ioList[j].aiocbp-E<gt>aio_fildes);\n"
" s = aio_cancel(ioList[j].aiocbp-E<gt>aio_fildes,\n"
" ioList[j].aiocbp);\n"
" if (s == AIO_CANCELED)\n"
" printf(\"I/O canceled\\en\");\n"
" else if (s == AIO_NOTCANCELED)\n"
" printf(\"I/O not canceled\\en\");\n"
" else if (s == AIO_ALLDONE)\n"
" printf(\"I/O all done\\en\");\n"
" else\n"
" perror(\"aio_cancel\");\n"
" }\n"
" }\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" gotSIGQUIT = 0;\n"
" }\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" /* Check the status of each I/O request that is still\n"
" in progress. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" printf(\"aio_error():\\en\");\n"
" for (size_t j = 0; j E<lt> numReqs; j++) {\n"
" if (ioList[j].status == EINPROGRESS) {\n"
" printf(\" for request %zu (descriptor %d): \",\n"
" j, ioList[j].aiocbp-E<gt>aio_fildes);\n"
" ioList[j].status = aio_error(ioList[j].aiocbp);\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" switch (ioList[j].status) {\n"
" case 0:\n"
" printf(\"I/O succeeded\\en\");\n"
" break;\n"
" case EINPROGRESS:\n"
" printf(\"In progress\\en\");\n"
" break;\n"
" case ECANCELED:\n"
" printf(\"Canceled\\en\");\n"
" break;\n"
" default:\n"
" perror(\"aio_error\");\n"
" break;\n"
" }\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" if (ioList[j].status != EINPROGRESS)\n"
" openReqs--;\n"
" }\n"
" }\n"
" }\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " printf(\"All I/O requests completed\\en\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " /* Check status return of all I/O requests. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" printf(\"aio_return():\\en\");\n"
" for (size_t j = 0; j E<lt> numReqs; j++) {\n"
" ssize_t s;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" s = aio_return(ioList[j].aiocbp);\n"
" printf(\" for request %zu (descriptor %d): %zd\\en\",\n"
" j, ioList[j].aiocbp-E<gt>aio_fildes, s);\n"
" }\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" exit(EXIT_SUCCESS);\n"
"}\n"
msgstr ""
" exit(EXIT_SUCCESS);\n"
"}\n"
#. type: TH
#: fedora-40 fedora-rawhide mageia-cauldron
#, no-wrap
msgid "2023-10-31"
msgstr "31 Octubre 2023"
#. type: TH
#: fedora-40 mageia-cauldron
#, no-wrap
msgid "Linux man-pages 6.06"
msgstr "Páginas de Manual de Linux 6.06"
#. type: TH
#: fedora-rawhide
#, no-wrap
msgid "Linux man-pages 6.7"
msgstr "Páginas de Manual de Linux 6.7"
#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "2023-03-30"
msgstr "30 Marzo 2023"
#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "Linux man-pages 6.04"
msgstr "Páginas de Manual de Linux 6.04"
#. type: TH
#: opensuse-tumbleweed
#, no-wrap
msgid "Linux man-pages (unreleased)"
msgstr "Páginas de Manual de Linux (no publicadas)"
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