/*- * Public Domain 2014-2019 MongoDB, Inc. * Public Domain 2008-2014 WiredTiger, Inc. * * This is free and unencumbered software released into the public domain. * * Anyone is free to copy, modify, publish, use, compile, sell, or * distribute this software, either in source code form or as a compiled * binary, for any purpose, commercial or non-commercial, and by any * means. * * In jurisdictions that recognize copyright laws, the author or authors * of this software dedicate any and all copyright interest in the * software to the public domain. We make this dedication for the benefit * of the public at large and to the detriment of our heirs and * successors. We intend this dedication to be an overt act of * relinquishment in perpetuity of all present and future rights to this * software under copyright law. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * ex_thread.c * This is an example demonstrating how to create and access a simple * table from multiple threads. */ #include "test_util.h" static const char *home; #define NUM_THREADS 10 /*! [thread scan] */ static WT_THREAD_RET scan_thread(void *conn_arg) { WT_CONNECTION *conn; WT_CURSOR *cursor; WT_SESSION *session; int ret; const char *key, *value; conn = conn_arg; error_check(conn->open_session(conn, NULL, NULL, &session)); error_check(session->open_cursor(session, "table:access", NULL, NULL, &cursor)); /* Show all records. */ while ((ret = cursor->next(cursor)) == 0) { error_check(cursor->get_key(cursor, &key)); error_check(cursor->get_value(cursor, &value)); printf("Got record: %s : %s\n", key, value); } if (ret != WT_NOTFOUND) fprintf(stderr, "WT_CURSOR.next: %s\n", session->strerror(session, ret)); return (WT_THREAD_RET_VALUE); } /*! [thread scan] */ /*! [thread main] */ int main(int argc, char *argv[]) { WT_CONNECTION *conn; WT_SESSION *session; WT_CURSOR *cursor; wt_thread_t threads[NUM_THREADS]; int i; home = example_setup(argc, argv); error_check(wiredtiger_open(home, NULL, "create", &conn)); error_check(conn->open_session(conn, NULL, NULL, &session)); error_check(session->create(session, "table:access", "key_format=S,value_format=S")); error_check(session->open_cursor(session, "table:access", NULL, "overwrite", &cursor)); cursor->set_key(cursor, "key1"); cursor->set_value(cursor, "value1"); error_check(cursor->insert(cursor)); error_check(session->close(session, NULL)); for (i = 0; i < NUM_THREADS; i++) error_check(__wt_thread_create(NULL, &threads[i], scan_thread, conn)); for (i = 0; i < NUM_THREADS; i++) error_check(__wt_thread_join(NULL, &threads[i])); error_check(conn->close(conn, NULL)); return (EXIT_SUCCESS); } /*! [thread main] */