mirror of
https://github.com/yasuhirokimura/db18
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Yasuhiro KIMURA
84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*
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* Copyright (c) 1997, 2019 Oracle and/or its affiliates. All rights reserved.
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*
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* See the file EXAMPLES-LICENSE for license information.
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*
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*/
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#ifndef __EX_SQL_UTILS_H
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#define __EX_SQL_UTILS_H
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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 <sqlite3.h>
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typedef sqlite3 db_handle;
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/*
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* Common database environment setup/clean up.
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*/
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db_handle* setup(const char* db_name); /* Setup database environment. */
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void cleanup(db_handle *db); /* Clean up the database environment. */
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/*
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* Common sql execution and error handler functions
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* error_handler(): Common error handler of examples. Report and exit if
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* any unexpected error occur.
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* exec_sql(): Execute a given sql expression, print the result
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* automatically and call above error_handler().
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* echo_info(): Echo the given message with line header.
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*/
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int error_handler(db_handle*); /* Default error handler. */
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int exec_sql(db_handle*, const char*); /* Common sql execution. */
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void echo_info(const char*); /* Echo message with Line Between. */
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/*
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* Table source definition. Here we use university and country tables
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* in these examples.
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*/
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typedef struct {
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const char* table_name; /* Table name of sample data. */
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const char* sql_create; /* SQL expression for creating the table. */
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const char* source_file; /* File name to sample data file. */
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int ncolumn; /* number of table column */
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} sample_data;
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extern const sample_data university_sample_data;/* Sample table, university. */
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extern const sample_data country_sample_data; /* Sample table, country. */
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/* Load table from a given csv file. */
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void load_table_from_file(sqlite3*, sample_data, int);
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/*
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* A very simple multi-threaded manager that creates, joins, stops multiple
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* threads that are used in the ex_sql_multi_thread example. This manager
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* can works on both Windows and UNIX.
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*/
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#define MAX_THREAD 1024
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#if !defined(HAVE_VXWORKS) && !defined(WIN32)
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#include <pthread.h>
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#endif
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#ifdef WIN32
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#include <windows.h>
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typedef HANDLE os_thread_t;
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#define os_thread_id() GetCurrentThreadId()
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#define os_thread_create(pid, func, arg) \
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((*pid = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)func, \
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arg, 0, NULL)) != NULL)
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#define S_ISDIR(m) ((m) & _S_IFDIR)
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#else
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typedef pthread_t os_thread_t;
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#define os_thread_id() pthread_self()
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#define os_thread_create(pid, func, arg) \
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(0 == pthread_create(pid, NULL, func, arg))
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#endif
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/* Program should register the thread id for following join_threads(). */
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void register_thread_id(os_thread_t pid);
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/* Join all registered threads. */
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int join_threads();
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#endif
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