# SOME DESCRIPTIVE TITLE # Copyright (C) YEAR Free Software Foundation, Inc. # This file is distributed under the same license as the PACKAGE package. # FIRST AUTHOR , YEAR. # #, fuzzy msgid "" msgstr "" "Project-Id-Version: PACKAGE VERSION\n" "POT-Creation-Date: 2012-03-19 23:50+0900\n" "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n" "Last-Translator: FULL NAME \n" "Language-Team: LANGUAGE \n" "Language: \n" "MIME-Version: 1.0\n" "Content-Type: text/plain; charset=CHARSET\n" "Content-Transfer-Encoding: 8bit\n" #. type: TH #: build/C/man7/aio.7:24 #, no-wrap msgid "AIO" msgstr "" #. type: TH #: build/C/man7/aio.7:24 build/C/man3/aio_fsync.3:23 build/C/man3/aio_suspend.3:24 build/C/man3/aio_write.3:23 #, no-wrap msgid "2010-10-02" msgstr "" #. type: TH #: build/C/man7/aio.7:24 build/C/man3/aio_init.3:24 build/C/man2/io_cancel.2:23 build/C/man2/io_destroy.2:23 build/C/man2/io_getevents.2:23 build/C/man2/io_setup.2:23 build/C/man2/io_submit.2:23 #, no-wrap msgid "Linux" msgstr "" #. type: TH #: build/C/man7/aio.7:24 build/C/man3/aio_cancel.3:23 build/C/man3/aio_error.3:23 build/C/man3/aio_fsync.3:23 build/C/man3/aio_init.3:24 build/C/man3/aio_read.3:23 build/C/man3/aio_return.3:23 build/C/man3/aio_suspend.3:24 build/C/man3/aio_write.3:23 build/C/man2/io_cancel.2:23 build/C/man2/io_destroy.2:23 build/C/man2/io_getevents.2:23 build/C/man2/io_setup.2:23 build/C/man2/io_submit.2:23 build/C/man3/lio_listio.3:23 #, no-wrap msgid "Linux Programmer's Manual" msgstr "" #. type: SH #: build/C/man7/aio.7:25 build/C/man3/aio_cancel.3:24 build/C/man3/aio_error.3:24 build/C/man3/aio_fsync.3:24 build/C/man3/aio_init.3:25 build/C/man3/aio_read.3:24 build/C/man3/aio_return.3:24 build/C/man3/aio_suspend.3:25 build/C/man3/aio_write.3:24 build/C/man2/io_cancel.2:24 build/C/man2/io_destroy.2:24 build/C/man2/io_getevents.2:24 build/C/man2/io_setup.2:24 build/C/man2/io_submit.2:24 build/C/man3/lio_listio.3:24 #, no-wrap msgid "NAME" msgstr "" #. type: Plain text #: build/C/man7/aio.7:27 msgid "aio - POSIX asynchronous I/O overview" msgstr "" #. type: SH #: build/C/man7/aio.7:27 build/C/man3/aio_cancel.3:32 build/C/man3/aio_error.3:32 build/C/man3/aio_fsync.3:32 build/C/man3/aio_init.3:36 build/C/man3/aio_read.3:32 build/C/man3/aio_return.3:32 build/C/man3/aio_suspend.3:38 build/C/man3/aio_write.3:32 build/C/man2/io_cancel.2:42 build/C/man2/io_destroy.2:40 build/C/man2/io_getevents.2:43 build/C/man2/io_setup.2:40 build/C/man2/io_submit.2:41 build/C/man3/lio_listio.3:35 #, no-wrap msgid "DESCRIPTION" msgstr "" #. type: Plain text #: build/C/man7/aio.7:35 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 #: build/C/man7/aio.7:37 msgid "The POSIX AIO interface consists of the following functions:" msgstr "" #. type: TP #: build/C/man7/aio.7:37 #, no-wrap msgid "B(3)" msgstr "" #. type: Plain text #: build/C/man7/aio.7:42 msgid "Enqueue a read request. This is the asynchronous analog of B(2)." msgstr "" #. type: TP #: build/C/man7/aio.7:42 #, no-wrap msgid "B(3)" msgstr "" #. type: Plain text #: build/C/man7/aio.7:47 msgid "Enqueue a write request. This is the asynchronous analog of B(2)." msgstr "" #. type: TP #: build/C/man7/aio.7:47 #, no-wrap msgid "B(3)" msgstr "" #. type: Plain text #: build/C/man7/aio.7:54 msgid "" "Enqueue a sync request for the I/O operations on a file descriptor. This is " "the asynchronous analog of B(2) and B(2)." msgstr "" #. type: TP #: build/C/man7/aio.7:54 #, no-wrap msgid "B(3)" msgstr "" #. type: Plain text #: build/C/man7/aio.7:57 msgid "Obtain the error status of an enqueued I/O request." msgstr "" #. type: TP #: build/C/man7/aio.7:57 #, no-wrap msgid "B(3)" msgstr "" #. type: Plain text #: build/C/man7/aio.7:60 msgid "Obtain the return status of a completed I/O request." msgstr "" #. type: TP #: build/C/man7/aio.7:60 #, no-wrap msgid "B(3)" msgstr "" #. type: Plain text #: build/C/man7/aio.7:64 msgid "" "Suspend the caller until one or more of a specified set of I/O requests " "completes." msgstr "" #. type: TP #: build/C/man7/aio.7:64 #, no-wrap msgid "B(3)" msgstr "" #. type: Plain text #: build/C/man7/aio.7:68 msgid "Attempt to cancel outstanding I/O requests on a specified file descriptor." msgstr "" #. type: TP #: build/C/man7/aio.7:68 #, no-wrap msgid "B(3)" msgstr "" #. type: Plain text #: build/C/man7/aio.7:71 msgid "Enqueue multiple I/O requests using a single function call." msgstr "" #. type: Plain text #: build/C/man7/aio.7:78 msgid "" "The I (\"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 #: build/C/man7/aio.7:82 #, no-wrap msgid "#include Eaiocb.hE\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:85 #, no-wrap msgid "" "struct aiocb {\n" " /* The order of these fields is implementation-dependent */\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:94 #, 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 #: build/C/man7/aio.7:97 #, no-wrap msgid "" " /* Various implementation-internal fields not shown */\n" "};\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:99 #, no-wrap msgid "/* Operation codes for \\(aqaio_lio_opcode\\(aq: */\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:101 #, no-wrap msgid "enum { LIO_READ, LIO_WRITE, LIO_NOP };\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:105 msgid "The fields of this structure are as follows:" msgstr "" #. type: TP #: build/C/man7/aio.7:105 #, no-wrap msgid "I" msgstr "" #. type: Plain text #: build/C/man7/aio.7:108 msgid "The file descriptor on which the I/O operation is to be performed." msgstr "" #. type: TP #: build/C/man7/aio.7:108 #, no-wrap msgid "I" msgstr "" #. type: Plain text #: build/C/man7/aio.7:111 msgid "This is the file offset at which the I/O operation is to be performed." msgstr "" #. type: TP #: build/C/man7/aio.7:111 #, no-wrap msgid "I" msgstr "" #. type: Plain text #: build/C/man7/aio.7:114 msgid "This is the buffer used to transfer data for a read or write operation." msgstr "" #. type: TP #: build/C/man7/aio.7:114 #, no-wrap msgid "I" msgstr "" #. type: Plain text #: build/C/man7/aio.7:118 msgid "This is the size of the buffer pointed to by I." msgstr "" #. type: TP #: build/C/man7/aio.7:118 #, no-wrap msgid "I" msgstr "" #. type: Plain text #: build/C/man7/aio.7:127 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(3)). The specified value must be " "between 0 and the value returned by I. " "This field is ignored for file synchronization operations." msgstr "" #. type: TP #: build/C/man7/aio.7:127 #, no-wrap msgid "I" msgstr "" #. type: Plain text #: build/C/man7/aio.7:141 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 are B, B, and " "B. See B(7) for further details." msgstr "" #. type: TP #: build/C/man7/aio.7:141 #, no-wrap msgid "I" msgstr "" #. type: Plain text #: build/C/man7/aio.7:145 msgid "The type of operation to be performed; used only for B(3)." msgstr "" #. type: Plain text #: build/C/man7/aio.7:148 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 #: build/C/man7/aio.7:148 #, no-wrap msgid "B(3)" msgstr "" #. type: Plain text #: build/C/man7/aio.7:151 msgid "" "Set parameters for tuning the behavior of the glibc POSIX AIO " "implementation." msgstr "" #. type: SH #: build/C/man7/aio.7:151 build/C/man3/aio_read.3:132 build/C/man3/aio_suspend.3:104 build/C/man3/aio_write.3:137 build/C/man2/io_cancel.2:78 build/C/man2/io_destroy.2:72 build/C/man2/io_getevents.2:85 build/C/man2/io_setup.2:81 build/C/man2/io_submit.2:83 build/C/man3/lio_listio.3:206 #, no-wrap msgid "NOTES" msgstr "" #. type: Plain text #: build/C/man7/aio.7:158 msgid "" "It is a good idea to zero out the control block buffer before use (see " "B(3)). The control block buffer and the buffer pointed to by " "I 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 #: build/C/man7/aio.7:162 msgid "" "Simultaneous asynchronous read or write operations using the same I " "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 #: build/C/man7/aio.7:180 msgid "" "The current Linux POSIX AIO implementation is provided in userspace 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(2), B(2), " "B(2), B(2), B(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 #: build/C/man7/aio.7:180 build/C/man3/aio_cancel.3:87 build/C/man3/aio_error.3:65 build/C/man3/aio_fsync.3:78 build/C/man3/aio_read.3:102 build/C/man3/aio_return.3:62 build/C/man3/aio_suspend.3:87 build/C/man3/aio_write.3:109 build/C/man2/io_cancel.2:56 build/C/man2/io_destroy.2:53 build/C/man2/io_getevents.2:60 build/C/man2/io_setup.2:54 build/C/man2/io_submit.2:54 build/C/man3/lio_listio.3:145 #, no-wrap msgid "ERRORS" msgstr "" #. type: TP #: build/C/man7/aio.7:181 build/C/man3/aio_error.3:66 build/C/man3/aio_fsync.3:86 build/C/man3/aio_read.3:110 build/C/man3/aio_return.3:63 build/C/man3/aio_write.3:121 build/C/man2/io_cancel.2:63 build/C/man2/io_destroy.2:57 build/C/man2/io_getevents.2:64 build/C/man2/io_setup.2:61 build/C/man2/io_submit.2:64 build/C/man3/lio_listio.3:160 #, no-wrap msgid "B" msgstr "" #. type: Plain text #: build/C/man7/aio.7:190 msgid "" "The I field of the I structure was less than 0, or was " "greater than the limit returned by the call " "I." msgstr "" #. type: SH #: build/C/man7/aio.7:190 build/C/man3/aio_cancel.3:92 build/C/man3/aio_error.3:73 build/C/man3/aio_fsync.3:94 build/C/man3/aio_init.3:91 build/C/man3/aio_read.3:126 build/C/man3/aio_return.3:68 build/C/man3/aio_suspend.3:98 build/C/man3/aio_write.3:131 build/C/man2/io_cancel.2:70 build/C/man2/io_destroy.2:64 build/C/man2/io_getevents.2:77 build/C/man2/io_setup.2:73 build/C/man2/io_submit.2:75 build/C/man3/lio_listio.3:200 #, no-wrap msgid "VERSIONS" msgstr "" #. type: Plain text #: build/C/man7/aio.7:192 msgid "The POSIX AIO interfaces are provided by glibc since version 2.1." msgstr "" #. type: SH #: build/C/man7/aio.7:192 build/C/man3/aio_cancel.3:96 build/C/man3/aio_error.3:77 build/C/man3/aio_fsync.3:98 build/C/man3/aio_init.3:95 build/C/man3/aio_read.3:130 build/C/man3/aio_return.3:72 build/C/man3/aio_suspend.3:102 build/C/man3/aio_write.3:135 build/C/man2/io_cancel.2:73 build/C/man2/io_destroy.2:67 build/C/man2/io_getevents.2:80 build/C/man2/io_setup.2:76 build/C/man2/io_submit.2:78 build/C/man3/lio_listio.3:204 #, no-wrap msgid "CONFORMING TO" msgstr "" #. type: Plain text #: build/C/man7/aio.7:194 build/C/man3/aio_cancel.3:98 build/C/man3/aio_error.3:79 build/C/man3/aio_fsync.3:100 build/C/man3/aio_read.3:132 build/C/man3/aio_return.3:74 build/C/man3/aio_suspend.3:104 build/C/man3/aio_write.3:137 build/C/man3/lio_listio.3:206 msgid "POSIX.1-2001, POSIX.1-2008." msgstr "" #. type: SH #: build/C/man7/aio.7:194 build/C/man3/aio_cancel.3:98 build/C/man3/aio_error.3:79 build/C/man3/aio_read.3:144 build/C/man3/aio_return.3:74 #, no-wrap msgid "EXAMPLE" msgstr "" #. type: Plain text #: build/C/man7/aio.7:207 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(3). The program then loops, periodically monitoring each of the " "I/O operations that is still in progress using B(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(3)." msgstr "" #. type: Plain text #: build/C/man7/aio.7:213 msgid "" "The B signal (generated by typing control-\\e) causes the program " "to request cancellation of each of the outstanding requests using " "B(3)." msgstr "" #. type: Plain text #: build/C/man7/aio.7:218 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 #: build/C/man7/aio.7:242 #, 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\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\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 #: build/C/man7/aio.7:244 #, no-wrap msgid "Program source" msgstr "" #. type: Plain text #: build/C/man7/aio.7:253 #, no-wrap msgid "" "#include Estdlib.hE\n" "#include Eunistd.hE\n" "#include Estdio.hE\n" "#include Eerrno.hE\n" "#include Eaio.hE\n" "#include Esignal.hE\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:255 #, no-wrap msgid "#define BUF_SIZE 20 /* Size of buffers for read operations */\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:257 #, no-wrap msgid "#define errExit(msg) do { perror(msg); exit(EXIT_FAILURE); } while (0)\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:259 #, no-wrap msgid "#define errMsg(msg) do { perror(msg); } while (0)\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:266 #, 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 #: build/C/man7/aio.7:270 #, 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 #: build/C/man7/aio.7:276 #, no-wrap msgid "" "static void /* Handler for SIGQUIT */\n" "quitHandler(int sig)\n" "{\n" " gotSIGQUIT = 1;\n" "}\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:278 #, no-wrap msgid "#define IO_SIGNAL SIGUSR1 /* Signal used to notify I/O completion */\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:283 #, no-wrap msgid "" "static void /* Handler for I/O completion signal */\n" "aioSigHandler(int sig, siginfo_t *si, void *ucontext)\n" "{\n" " write(STDOUT_FILENO, \"I/O completion signal received\\en\", 31);\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:289 #, no-wrap msgid "" " /* The corresponding ioRequest structure would be available as\n" " struct ioRequest *ioReq = si-Esi_value.sival_ptr;\n" " and the file descriptor would then be available via\n" " ioReq-Eaiocbp-Eaio_fildes */\n" "}\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:299 #, no-wrap msgid "" "int\n" "main(int argc, char *argv[])\n" "{\n" " struct ioRequest *ioList;\n" " struct aiocb *aiocbList;\n" " struct sigaction sa;\n" " int s, j;\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 #: build/C/man7/aio.7:305 #, no-wrap msgid "" " if (argc E 2) {\n" " fprintf(stderr, \"Usage: %s EpathnameE " "EpathnameE...\\en\",\n" " argv[0]);\n" " exit(EXIT_FAILURE);\n" " }\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:307 #, no-wrap msgid " numReqs = argc - 1;\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:309 #, no-wrap msgid " /* Allocate our arrays */\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:313 #, no-wrap msgid "" " ioList = calloc(numReqs, sizeof(struct ioRequest));\n" " if (ioList == NULL)\n" " errExit(\"calloc\");\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:317 #, no-wrap msgid "" " aiocbList = calloc(numReqs, sizeof(struct aiocb));\n" " if (aiocbList == NULL)\n" " errExit(\"calloc\");\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:319 #, no-wrap msgid " /* Establish handlers for SIGQUIT and the I/O completion signal */\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:322 #, no-wrap msgid "" " sa.sa_flags = SA_RESTART;\n" " sigemptyset(&sa.sa_mask);\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:326 #, no-wrap msgid "" " sa.sa_handler = quitHandler;\n" " if (sigaction(SIGQUIT, &sa, NULL) == -1)\n" " errExit(\"sigaction\");\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:331 #, 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 #: build/C/man7/aio.7:334 #, 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 #: build/C/man7/aio.7:339 #, no-wrap msgid "" " for (j = 0; j E numReqs; j++) {\n" " ioList[j].reqNum = j;\n" " ioList[j].status = EINPROGRESS;\n" " ioList[j].aiocbp = &aiocbList[j];\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:345 #, no-wrap msgid "" " ioList[j].aiocbp-Eaio_fildes = open(argv[j + 1], O_RDONLY);\n" " if (ioList[j].aiocbp-Eaio_fildes == -1)\n" " errExit(\"open\");\n" " printf(\"opened %s on descriptor %d\\en\", argv[j + 1],\n" " ioList[j].aiocbp-Eaio_fildes);\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:349 #, no-wrap msgid "" " ioList[j].aiocbp-Eaio_buf = malloc(BUF_SIZE);\n" " if (ioList[j].aiocbp-Eaio_buf == NULL)\n" " errExit(\"malloc\");\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:357 #, no-wrap msgid "" " ioList[j].aiocbp-Eaio_nbytes = BUF_SIZE;\n" " ioList[j].aiocbp-Eaio_reqprio = 0;\n" " ioList[j].aiocbp-Eaio_offset = 0;\n" " ioList[j].aiocbp-Eaio_sigevent.sigev_notify = SIGEV_SIGNAL;\n" " ioList[j].aiocbp-Eaio_sigevent.sigev_signo = IO_SIGNAL;\n" " ioList[j].aiocbp-Eaio_sigevent.sigev_value.sival_ptr =\n" " &ioList[j];\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:362 #, no-wrap msgid "" " s = aio_read(ioList[j].aiocbp);\n" " if (s == -1)\n" " errExit(\"aio_read\");\n" " }\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:364 #, no-wrap msgid " openReqs = numReqs;\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:366 #, no-wrap msgid " /* Loop, monitoring status of I/O requests */\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:369 #, no-wrap msgid "" " while (openReqs E 0) {\n" " sleep(3); /* Delay between each monitoring step */\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:371 #, no-wrap msgid " if (gotSIGQUIT) {\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:375 #, 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 cancellation requests */\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:377 #, no-wrap msgid " printf(\"got SIGQUIT; canceling I/O requests: \\en\");\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:394 #, no-wrap msgid "" " for (j = 0; j E numReqs; j++) {\n" " if (ioList[j].status == EINPROGRESS) {\n" " printf(\" Request %d on descriptor %d:\", j,\n" " ioList[j].aiocbp-Eaio_fildes);\n" " s = aio_cancel(ioList[j].aiocbp-Eaio_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" " errMsg(\"aio_cancel\");\n" " }\n" " }\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:397 #, no-wrap msgid "" " gotSIGQUIT = 0;\n" " }\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:400 #, no-wrap msgid "" " /* Check the status of each I/O request that is still\n" " in progress */\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:407 #, no-wrap msgid "" " printf(\"aio_error():\\en\");\n" " for (j = 0; j E numReqs; j++) {\n" " if (ioList[j].status == EINPROGRESS) {\n" " printf(\" for request %d (descriptor %d): \",\n" " j, ioList[j].aiocbp-Eaio_fildes);\n" " ioList[j].status = aio_error(ioList[j].aiocbp);\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:422 #, 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" " errMsg(\"aio_error\");\n" " break;\n" " }\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:428 #, no-wrap msgid "" " if (ioList[j].status != EINPROGRESS)\n" " openReqs--;\n" " }\n" " }\n" " }\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:430 #, no-wrap msgid " printf(\"All I/O requests completed\\en\");\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:432 #, no-wrap msgid " /* Check status return of all I/O requests */\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:436 #, no-wrap msgid "" " printf(\"aio_return():\\en\");\n" " for (j = 0; j E numReqs; j++) {\n" " ssize_t s;\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:441 #, no-wrap msgid "" " s = aio_return(ioList[j].aiocbp);\n" " printf(\" for request %d (descriptor %d): %ld\\en\",\n" " j, ioList[j].aiocbp-Eaio_fildes, (long) s);\n" " }\n" msgstr "" #. type: Plain text #: build/C/man7/aio.7:444 #, no-wrap msgid "" " exit(EXIT_SUCCESS);\n" "}\n" msgstr "" #. type: SH #: build/C/man7/aio.7:445 build/C/man3/aio_cancel.3:101 build/C/man3/aio_error.3:82 build/C/man3/aio_fsync.3:100 build/C/man3/aio_init.3:97 build/C/man3/aio_read.3:147 build/C/man3/aio_return.3:77 build/C/man3/aio_suspend.3:124 build/C/man3/aio_write.3:149 build/C/man2/io_cancel.2:94 build/C/man2/io_destroy.2:88 build/C/man2/io_getevents.2:101 build/C/man2/io_setup.2:97 build/C/man2/io_submit.2:99 build/C/man3/lio_listio.3:218 #, no-wrap msgid "SEE ALSO" msgstr "" #. type: Plain text #: build/C/man7/aio.7:460 msgid "" "B(2), B(2), B(2), B(2), " "B(2), B(3), B(3), B(3), " "B(3), B(3), B(3), B(3), " "http://www.squid-cache.org/~adrian/Reprint-Pulavarty-OLS2003.pdf" msgstr "" #. type: SH #: build/C/man7/aio.7:460 build/C/man3/aio_cancel.3:110 build/C/man3/aio_error.3:91 build/C/man3/aio_fsync.3:110 build/C/man3/aio_init.3:99 build/C/man3/aio_read.3:156 build/C/man3/aio_return.3:86 build/C/man3/aio_suspend.3:134 build/C/man3/aio_write.3:158 build/C/man2/io_cancel.2:107 build/C/man2/io_destroy.2:101 build/C/man2/io_getevents.2:116 build/C/man2/io_setup.2:108 build/C/man2/io_submit.2:110 build/C/man3/lio_listio.3:226 #, no-wrap msgid "COLOPHON" msgstr "" #. type: Plain text #: build/C/man7/aio.7:467 build/C/man3/aio_cancel.3:117 build/C/man3/aio_error.3:98 build/C/man3/aio_fsync.3:117 build/C/man3/aio_init.3:106 build/C/man3/aio_read.3:163 build/C/man3/aio_return.3:93 build/C/man3/aio_suspend.3:141 build/C/man3/aio_write.3:165 build/C/man2/io_cancel.2:114 build/C/man2/io_destroy.2:108 build/C/man2/io_getevents.2:123 build/C/man2/io_setup.2:115 build/C/man2/io_submit.2:117 build/C/man3/lio_listio.3:233 msgid "" "This page is part of release 3.35 of the Linux I project. A " "description of the project, and information about reporting bugs, can be " "found at http://man7.org/linux/man-pages/." msgstr "" #. type: TH #: build/C/man3/aio_cancel.3:23 #, no-wrap msgid "AIO_CANCEL" msgstr "" #. type: TH #: build/C/man3/aio_cancel.3:23 #, no-wrap msgid "2011-10-04" msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:26 msgid "aio_cancel - cancel an outstanding asynchronous I/O request" msgstr "" #. type: SH #: build/C/man3/aio_cancel.3:26 build/C/man3/aio_error.3:26 build/C/man3/aio_fsync.3:26 build/C/man3/aio_init.3:27 build/C/man3/aio_read.3:26 build/C/man3/aio_return.3:26 build/C/man3/aio_suspend.3:27 build/C/man3/aio_write.3:26 build/C/man2/io_cancel.2:26 build/C/man2/io_destroy.2:26 build/C/man2/io_getevents.2:26 build/C/man2/io_setup.2:26 build/C/man2/io_submit.2:26 build/C/man3/lio_listio.3:26 #, no-wrap msgid "SYNOPSIS" msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:28 build/C/man3/aio_error.3:28 build/C/man3/aio_fsync.3:28 build/C/man3/aio_read.3:28 build/C/man3/aio_return.3:28 build/C/man3/aio_write.3:28 msgid "B<#include Eaio.hE>" msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:30 msgid "BIB<, struct aiocb *>IB<);>" msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:32 build/C/man3/aio_error.3:32 build/C/man3/aio_fsync.3:32 build/C/man3/aio_init.3:36 build/C/man3/aio_read.3:32 build/C/man3/aio_return.3:32 build/C/man3/aio_write.3:32 msgid "Link with I<-lrt>." msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:50 msgid "" "The B() function attempts to cancel outstanding asynchronous " "I/O requests for the file descriptor I. If I is NULL, all such " "requests are canceled. Otherwise, only the request described by the control " "block pointed to by I is canceled. (See B(7) for a " "description of the I structure.)" msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:59 msgid "" "Normal asynchronous notification occurs for canceled requests. The request " "return status (B(3)) is set to -1, and the request error status " "(B(3)) is set to B. The control block of requests " "that cannot be canceled is not changed." msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:66 msgid "" "If I is not NULL, and I differs from the file descriptor with " "which the asynchronous operation was initiated, unspecified results occur." msgstr "" #. FreeBSD: not those on raw disk devices. #. type: Plain text #: build/C/man3/aio_cancel.3:69 msgid "Which operations are cancelable is implementation-defined." msgstr "" #. type: SH #: build/C/man3/aio_cancel.3:69 build/C/man3/aio_error.3:43 build/C/man3/aio_fsync.3:72 build/C/man3/aio_read.3:87 build/C/man3/aio_return.3:48 build/C/man3/aio_suspend.3:79 build/C/man3/aio_write.3:94 build/C/man2/io_cancel.2:51 build/C/man2/io_destroy.2:48 build/C/man2/io_getevents.2:54 build/C/man2/io_setup.2:49 build/C/man2/io_submit.2:48 build/C/man3/lio_listio.3:107 #, no-wrap msgid "RETURN VALUE" msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:87 msgid "" "This function returns B if all requests were successfully " "canceled. It returns B when at least one of the requests " "specified was not canceled because it was in progress. In this case one may " "check the status of individual requests using B(3). This " "function returns B if all requests had already been completed " "before this call. When some error occurs, -1 is returned, and I is " "set appropriately." msgstr "" #. type: TP #: build/C/man3/aio_cancel.3:88 build/C/man3/aio_fsync.3:82 build/C/man3/aio_read.3:106 build/C/man3/aio_write.3:113 build/C/man2/io_submit.2:58 #, no-wrap msgid "B" msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:92 msgid "I is not a valid file descriptor." msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:96 msgid "The B() function is available since glibc 2.1." msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:101 build/C/man3/aio_error.3:82 build/C/man3/aio_read.3:147 build/C/man3/aio_return.3:77 msgid "See B(7)." msgstr "" #. type: Plain text #: build/C/man3/aio_cancel.3:110 msgid "" "B(3), B(3), B(3), B(3), " "B(3), B(3), B(3), B(7)" msgstr "" #. type: TH #: build/C/man3/aio_error.3:23 #, no-wrap msgid "AIO_ERROR" msgstr "" #. type: TH #: build/C/man3/aio_error.3:23 build/C/man3/aio_read.3:23 build/C/man3/aio_return.3:23 #, no-wrap msgid "2010-10-03" msgstr "" #. type: Plain text #: build/C/man3/aio_error.3:26 msgid "aio_error - get error status of asynchronous I/O operation" msgstr "" #. type: Plain text #: build/C/man3/aio_error.3:30 msgid "BIB<);>" msgstr "" #. type: Plain text #: build/C/man3/aio_error.3:43 msgid "" "The B() function returns the error status for the asynchronous " "I/O request with control block pointed to by I. (See B(7) for " "a description of the I structure.)" msgstr "" #. type: Plain text #: build/C/man3/aio_error.3:45 msgid "This function returns one of the following:" msgstr "" #. type: IP #: build/C/man3/aio_error.3:45 build/C/man3/aio_error.3:49 build/C/man3/aio_error.3:52 build/C/man3/aio_error.3:54 build/C/man3/aio_suspend.3:42 build/C/man3/aio_suspend.3:46 build/C/man3/aio_suspend.3:48 #, no-wrap msgid "*" msgstr "" #. type: Plain text #: build/C/man3/aio_error.3:49 msgid "B, if the request has not been completed yet." msgstr "" #. type: Plain text #: build/C/man3/aio_error.3:52 msgid "B, if the request was canceled." msgstr "" #. type: Plain text #: build/C/man3/aio_error.3:54 msgid "0, if the request completed successfully." msgstr "" #. type: Plain text #: build/C/man3/aio_error.3:65 msgid "" "A positive error, if the asynchronous I/O operation failed. This is the " "same value that would have been stored in the I variable in the case " "of a synchronous B(2), B(2), B(2), or B(2) " "call." msgstr "" #. type: Plain text #: build/C/man3/aio_error.3:73 msgid "" "I does not point at a control block for an asynchronous I/O request " "of which the return status (see B(3)) has not been retrieved " "yet." msgstr "" #. type: Plain text #: build/C/man3/aio_error.3:77 msgid "The B() function is available since glibc 2.1." msgstr "" #. type: Plain text #: build/C/man3/aio_error.3:91 msgid "" "B(3), B(3), B(3), B(3), " "B(3), B(3), B(3), B(7)" msgstr "" #. type: TH #: build/C/man3/aio_fsync.3:23 #, no-wrap msgid "AIO_FSYNC" msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:26 msgid "aio_fsync - asynchronous file synchronization" msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:30 msgid "BIB<, struct aiocb *>IB<);>" msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:43 msgid "" "The B() function does a sync on all outstanding asynchronous I/O " "operations associated with Iaio_fildes>. (See B(7) for a " "description of the I structure.)" msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:57 msgid "" "More precisely, if I is B, then all currently queued I/O " "operations shall be completed as if by a call of B(2), and if I " "is B, this call is the asynchronous analog of B(2)." msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:59 msgid "Note that this is a request only; it does not wait for I/O completion." msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:72 msgid "" "Apart from I, the only field in the structure pointed to by " "I that is used by this call is the I field (a " "I structure, described in B(7)), which indicates the " "desired type of asynchronous notification at completion. All other fields " "are ignored." msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:78 msgid "" "On success (the sync request was successfully queued) this function returns " "0. On error -1 is returned, and I is set appropriately." msgstr "" #. type: TP #: build/C/man3/aio_fsync.3:79 build/C/man3/aio_read.3:103 build/C/man3/aio_suspend.3:88 build/C/man3/aio_write.3:110 build/C/man2/io_cancel.2:57 build/C/man2/io_setup.2:55 build/C/man2/io_submit.2:55 build/C/man3/lio_listio.3:149 build/C/man3/lio_listio.3:152 #, no-wrap msgid "B" msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:82 build/C/man3/aio_read.3:106 build/C/man3/aio_write.3:113 build/C/man3/lio_listio.3:152 msgid "Out of resources." msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:86 build/C/man3/aio_write.3:117 msgid "I is not a valid file descriptor open for writing." msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:94 msgid "" "Synchronized I/O is not supported for this file, or I is not B " "or B." msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:98 msgid "The B() function is available since glibc 2.1." msgstr "" #. type: Plain text #: build/C/man3/aio_fsync.3:110 msgid "" "B(3), B(3), B(3), B(3), " "B(3), B(3), B(3), B(7), " "B(7)" msgstr "" #. type: TH #: build/C/man3/aio_init.3:24 #, no-wrap msgid "AIO_INIT" msgstr "" #. type: TH #: build/C/man3/aio_init.3:24 #, no-wrap msgid "2010-10-06" msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:27 msgid "aio_init - POSIX asynchronous I/O initialization" msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:31 #, no-wrap msgid "" "B<#define _GNU_SOURCE> /* See feature_test_macros(7) */\n" "B<#include Eaio.hE>\n" msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:33 #, no-wrap msgid "BIB<);>\n" msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:43 msgid "" "The GNU-specific B() function allows the caller to provide tuning " "hints to the glibc POSIX AIO implementation. Use of this function is " "optional, but to be effective, it must be called before employing any other " "functions in the POSIX AIO API." msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:47 msgid "" "The tuning information is provided in the buffer pointed to by the argument " "I. This buffer is a structure of the following form:" msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:62 #, no-wrap msgid "" "struct aioinit {\n" " int aio_threads; /* Maximum number of threads */\n" " int aio_num; /* Number of expected simultaneous\n" " requests */\n" " int aio_locks; /* Not used */\n" " int aio_usedba; /* Not used */\n" " int aio_debug; /* Not used */\n" " int aio_numusers; /* Not used */\n" " int aio_idle_time; /* Number of seconds before idle thread\n" " terminates (since glibc 2.2) */\n" " int aio_reserved;\n" "};\n" msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:68 msgid "The following fields are used in the I structure:" msgstr "" #. type: TP #: build/C/man3/aio_init.3:68 #, no-wrap msgid "I" msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:76 msgid "" "This field specifies the maximum number of worker threads that may be used " "by the implementation. If the number of outstanding I/O operations exceeds " "this limit, then excess operations will be queued until a worker thread " "becomes free. If this field is specified with a value less than 1, the " "value 1 is used. The default value is 20." msgstr "" #. type: TP #: build/C/man3/aio_init.3:76 #, no-wrap msgid "I" msgstr "" #. FIXME But, if aio_num > 32, the behavior looks strange. See #. http://sourceware.org/bugzilla/show_bug.cgi?id=12083 #. type: Plain text #: build/C/man3/aio_init.3:85 msgid "" "This field should specify the maximum number of simultaneous I/O requests " "that the caller expects to enqueue. If a value less than 32 is specified " "for this field, it is rounded up to 32. The default value is 64." msgstr "" #. type: TP #: build/C/man3/aio_init.3:85 #, no-wrap msgid "I" msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:91 msgid "" "This field specifies the amount of time in seconds that a worker thread " "should wait for further requests before terminating, after having completed " "a previous request. The default value is 1." msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:95 msgid "The B() function is available since glibc 2.1." msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:97 msgid "This function is a GNU extension." msgstr "" #. type: Plain text #: build/C/man3/aio_init.3:99 msgid "B(7)" msgstr "" #. type: TH #: build/C/man3/aio_read.3:23 #, no-wrap msgid "AIO_READ" msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:26 msgid "aio_read - asynchronous read" msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:30 msgid "BIB<);>" msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:40 msgid "" "The B() function queues the I/O request described by the buffer " "pointed to by I. This function is the asynchronous analog of " "B(2). The arguments of the call" msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:42 #, no-wrap msgid " read(fd, buf, count)\n" msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:55 build/C/man3/aio_write.3:55 msgid "" "correspond (in order) to the fields I, I, and " "I of the structure pointed to by I. (See B(7) for " "a description of the I structure.)" msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:61 msgid "" "The data is read starting at the absolute file offset " "Iaio_offset>, regardless of the current file offset. After the " "call, the value of the current file offset is unspecified." msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:74 msgid "" "The \"asynchronous\" means that this call returns as soon as the request has " "been enqueued; the read may or may not have completed when the call " "returns. One tests for completion using B(3). The return status " "of a completed I/O operation can be obtained B(3). Asynchronous " "notification of I/O completion can be obtained by setting " "Iaio_sigevent> appropriately; see B(7) for details." msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:81 build/C/man3/aio_write.3:88 msgid "" "If B<_POSIX_PRIORITIZED_IO> is defined, and this file supports it, then the " "asynchronous operation is submitted at a priority equal to that of the " "calling process minus Iaio_reqprio>." msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:85 build/C/man3/aio_write.3:92 msgid "The field Iaio_lio_opcode> is ignored." msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:87 msgid "No data is read from a regular file beyond its maximum offset." msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:102 build/C/man3/aio_write.3:109 msgid "" "On success, 0 is returned. On error the request is not enqueued, -1 is " "returned, and I is set appropriately. If an error is only detected " "later, it will be reported via B(3) (returns status -1) and " "B(3) (error status\\(emwhatever one would have gotten in " "I, such as B)." msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:110 msgid "I is not a valid file descriptor open for reading." msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:118 msgid "One or more of I, I, or I are invalid." msgstr "" #. type: TP #: build/C/man3/aio_read.3:118 build/C/man3/aio_write.3:128 build/C/man2/io_cancel.2:66 build/C/man2/io_destroy.2:60 build/C/man2/io_getevents.2:73 build/C/man2/io_setup.2:69 build/C/man2/io_submit.2:71 #, no-wrap msgid "B" msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:121 build/C/man3/aio_write.3:131 msgid "This function is not supported." msgstr "" #. type: TP #: build/C/man3/aio_read.3:121 #, no-wrap msgid "B" msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:126 msgid "" "The file is a regular file, we start reading before end-of-file and want at " "least one byte, but the starting position is past the maximum offset for " "this file." msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:130 msgid "The B() function is available since glibc 2.1." msgstr "" #. or the control block of the operation #. type: Plain text #: build/C/man3/aio_read.3:140 msgid "" "It is a good idea to zero out the control block before use. The control " "block must not be changed while the read operation is in progress. The " "buffer area being read into must not be accessed during the operation or " "undefined results may occur. The memory areas involved must remain valid." msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:144 build/C/man3/aio_write.3:149 build/C/man3/lio_listio.3:218 msgid "" "Simultaneous I/O operations specifying the same I structure produce " "undefined results." msgstr "" #. type: Plain text #: build/C/man3/aio_read.3:156 msgid "" "B(3), B(3), B(3), B(3), " "B(3), B(3), B(3), B(7)" msgstr "" #. type: TH #: build/C/man3/aio_return.3:23 #, no-wrap msgid "AIO_RETURN" msgstr "" #. type: Plain text #: build/C/man3/aio_return.3:26 msgid "aio_return - get return status of asynchronous I/O operation" msgstr "" #. type: Plain text #: build/C/man3/aio_return.3:30 msgid "BIB<);>" msgstr "" #. type: Plain text #: build/C/man3/aio_return.3:43 msgid "" "The B() function returns the final return status for the " "asynchronous I/O request with control block pointed to by I. (See " "B(7) for a description of the I structure.)" msgstr "" #. type: Plain text #: build/C/man3/aio_return.3:48 msgid "" "This function should be called only once for any given request, after " "B(3) returns something other than B." msgstr "" #. type: Plain text #: build/C/man3/aio_return.3:57 msgid "" "If the asynchronous I/O operation has completed, this function returns the " "value that would have been returned in case of a synchronous B(2), " "B(2), B(2) or B(2), call." msgstr "" #. type: Plain text #: build/C/man3/aio_return.3:62 msgid "" "If the asynchronous I/O operation has not yet completed, the return value " "and effect of B() are undefined." msgstr "" #. type: Plain text #: build/C/man3/aio_return.3:68 msgid "" "I does not point at a control block for an asynchronous I/O request " "of which the return status has not been retrieved yet." msgstr "" #. type: Plain text #: build/C/man3/aio_return.3:72 msgid "The B() function is available since glibc 2.1." msgstr "" #. type: Plain text #: build/C/man3/aio_return.3:86 msgid "" "B(3), B(3), B(3), B(3), " "B(3), B(3), B(3), B(7)" msgstr "" #. type: TH #: build/C/man3/aio_suspend.3:24 #, no-wrap msgid "AIO_SUSPEND" msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:27 msgid "aio_suspend - wait for asynchronous I/O operation or timeout" msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:31 build/C/man3/lio_listio.3:29 #, no-wrap msgid "B<#include Eaio.hE>\n" msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:33 #, no-wrap msgid "BIB<[],>\n" msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:35 #, no-wrap msgid "" "B< int >IB<, const struct timespec " "*>IB<);>\n" msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:37 build/C/man3/lio_listio.3:34 #, no-wrap msgid "Link with I<-lrt>.\n" msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:42 msgid "" "The B() function suspends the calling thread until one of the " "following occurs:" msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:46 msgid "" "One or more of the asynchronous I/O requests in the list I has " "completed." msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:48 msgid "A signal is delivered." msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:55 msgid "" "I is not NULL and the specified time interval has passed. (For " "details of the I structure, see B(2).)" msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:73 msgid "" "The I argument specifies the number of items in I. Each " "item in the list pointed to by I must be either NULL (and then " "is ignored), or a pointer to a control block on which I/O was initiated " "using B(3), B(3), or B(3). (See B(7) " "for a description of the I structure.)" msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:79 msgid "" "If B is supported, this clock is used to measure the " "timeout interval (see B(3))." msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:87 msgid "" "If this function returns after completion of one of the I/O requests " "specified in I, 0 is returned. Otherwise, -1 is returned, and " "I is set to indicate the error." msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:92 msgid "The call timed out before any of the indicated operations had completed." msgstr "" #. type: TP #: build/C/man3/aio_suspend.3:92 build/C/man2/io_getevents.2:69 build/C/man3/lio_listio.3:168 #, no-wrap msgid "B" msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:98 msgid "" "The call was ended by signal (possibly the completion signal of one of the " "operations we were waiting for); see B(7)." msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:102 msgid "The B() function is available since glibc 2.1." msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:108 msgid "" "One can achieve polling by using a non-NULL I that specifies a zero " "time interval." msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:114 msgid "" "If one or more of the asynchronous I/O operations specified in I " "has already completed at the time of the call to B(), then the " "call returns immediately." msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:124 msgid "" "To determine which I/O operations have completed after a successful return " "from B(), use B(3) to scan the list of I " "structures pointed to by I." msgstr "" #. type: Plain text #: build/C/man3/aio_suspend.3:134 msgid "" "B(3), B(3), B(3), B(3), " "B(3), B(3), B(3), B(7), B