8c183b0772
Don't print "home" if it's NULL. Make ex_async work like the rest of the example programs, creating and using WT_HOME. * We need two sizes, the size of the data in the buffer and the size of the buffer itself, split the two apart, otherwise it's possible to read data that's never been written. Remove the assert the file size is never 0, that's a reasonable condition if the file has never been written. Don't bother realloc the buffer when truncating it to a smaller size. * Add a full smoke test, create a table then write it, close and reopen it, and read the values back. * main() should return EXIT_SUCCESS or EXIT_FAILURE, not a return value from the underlying WiredTiger library.
86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/*-
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* Public Domain 2014-2016 MongoDB, Inc.
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* Public Domain 2008-2014 WiredTiger, Inc.
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*
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* This is free and unencumbered software released into the public domain.
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*
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* Anyone is free to copy, modify, publish, use, compile, sell, or
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* distribute this software, either in source code form or as a compiled
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* binary, for any purpose, commercial or non-commercial, and by any
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* means.
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*
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* In jurisdictions that recognize copyright laws, the author or authors
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* of this software dedicate any and all copyright interest in the
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* software to the public domain. We make this dedication for the benefit
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* of the public at large and to the detriment of our heirs and
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* successors. We intend this dedication to be an overt act of
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* relinquishment in perpetuity of all present and future rights to this
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* software under copyright law.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* ex_process.c
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* This is an example demonstrating how to connect to a database from
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* multiple processes.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wiredtiger.h>
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static const char *home;
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int
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main(void)
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{
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int ret;
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WT_CONNECTION *conn;
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WT_SESSION *session;
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/*
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* Create a clean test directory for this run of the test program if the
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* environment variable isn't already set (as is done by make check).
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*/
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if (getenv("WIREDTIGER_HOME") == NULL) {
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home = "WT_HOME";
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ret = system("rm -rf WT_HOME && mkdir WT_HOME");
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} else
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home = NULL;
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/*! [processes] */
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/* Open a connection to the database, creating it if necessary. */
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if ((ret =
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wiredtiger_open(home, NULL, "create,multiprocess", &conn)) != 0) {
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fprintf(stderr, "Error connecting to %s: %s\n",
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home == NULL ? "." : home, wiredtiger_strerror(ret));
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return (EXIT_FAILURE);
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}
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/* Open a session for the current thread's work. */
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if ((ret = conn->open_session(conn, NULL, NULL, &session)) != 0) {
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fprintf(stderr, "Error opening a session on %s: %s\n",
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home == NULL ? "." : home, wiredtiger_strerror(ret));
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return (EXIT_FAILURE);
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}
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/* XXX Do some work... */
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/* Note: closing the connection implicitly closes open session(s). */
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if ((ret = conn->close(conn, NULL)) != 0) {
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fprintf(stderr, "Error closing %s: %s\n",
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home == NULL ? "." : home, wiredtiger_strerror(ret));
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return (EXIT_FAILURE);
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}
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/*! [processes] */
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return (EXIT_SUCCESS);
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}
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