Sqlite3.78移植到VxWorks6.6

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1、准备工作

首先从网上下载一个sqlite Developer 3.8.5管理工具,SharpPlus sqlite Developer,强大的sqlite3数据库管理程序,具有如下功能

☆、强大的sql编辑器

☆、sqlite sql语法高亮

☆、sql编辑历史

☆、sql关键字自动完成

☆、括号高亮匹配

☆、表,字段名自动完成

☆、自动sql语法错误提示

☆、支持Unicode

☆、sql代码格式化器

☆、支持ANSI,UTF8和UTF16数据编辑.

☆、可定制的数据类型映射.

☆、可执行分号分割的多条sql语句.

☆、sql执行监视器.

☆、可视化查询设计器.

☆、可视化表,视图,触发器和索引编辑.

☆、可按文本,16进制,HTML或者位图形式编辑数据.

☆、支持查看和编辑临时表,视图和触发器.

☆、支持查询计划.

☆、自动更新.

☆、可以将数据导出为sql,csv,excel,word,html,xml.

☆、可以导入csv文件.

☆、可以导出数据库的元数据.

☆、支持数据库元数据查找

☆、可以中断长时间查询

☆、支持sqlite可加载扩展及虚拟表

☆、多语言支持(英语,简体中文,日语)

其次从sqlite官方网上http://www.sqlite.org/download.html下载一个sqlite3.85开源代码,怎么下载应该比较简单了!

打开sqlite Developer程序,上面的Sample.db将是我们测试的数据源,我们将利用该数据库的部门表见下图“DEPARTMENT”进行验证是否正确,安装之后把Sample.db文件拷贝至$(FEPHOME)/db/目录下,在$(FEPHOME)/code/目录新建文件sqlite378,把下载的sqlite3.78包中的sqlite3.h和sqlite3ext.h拷贝此处。

2、测试代码

  1. //testsqlite378.cpp:Definestheentrypointfortheconsoleapplication.
  2. //
  3. #include"stdafx.h"
  4. #include<stdio.h>
  5. #include<stdlib.h>
  6. #include<string.h>
  7. #include"sqlite378/sqlite3.h"//$(FEPHOME)/code/inlcude/sqlite378
  8. intmain(intargc,char*argv[])
  9. {
  10. sqlite3*db=NULL;
  11. char*zErrMsg=0;
  12. intrc;
  13. char*szWorkPath="/e/openSUSE3000/fep/db/Sample.db3";
  14. rc=sqlite3_open(szWorkPath,&db);//打开指定的数据库文件.
  15. if(rc)
  16. {
  17. fprintf(stderr,"Can'topendatabase:%s\n",sqlite3_errmsg(db));
  18. sqlite3_close(db);
  19. return(1);
  20. }
  21. else
  22. printf("Youhaveopenedasqlite3databasenamedSample.db3successfully!\n");
  23. }
  24. intnrow=0,ncolumn=0;
  25. char**azResult;//二维数组存放结果
  26. //查询数据
  27. char*sql="SELECT*FROMDEPARTMENT";
  28. sqlite3_get_table(db,sql,&azResult,&nrow,&ncolumn,&zErrMsg);
  29. inti=0;
  30. printf("row:%dcolumn=%d\n",nrow,ncolumn);
  31. printf("\nTheresultofqueryingis:\n");
  32. for(i=0;i<(nrow+1)*ncolumn;i++)
  33. printf("azResult[%d]=%s\n",i,azResult[i]);
  34. //释放掉azResult的内存空间
  35. sqlite3_free_table(azResult);
  36. #ifdef_DEBUG_
  37. printf("zErrMsg=%s\n",zErrMsg);
  38. #endif
  39. sqlite3_close(db);//关闭数据库
  40. return0;
  41. }

3、生成代码libsqlite378

生成库时需要一些配置,具体内容如下:

DEFINES:-DOS_VXWORKS=1 -D_HAVE_sqlITE_CONFIG_H -DsqlITE_THREADSAFE=0

OS_VXWORKS:说明使用操作系统VxWorks.

_HAVE_sqlITE_CONFIG_H:将使用配置文件“config.h”

copy
    #ifndef_CONFIG_H_
  1. #define_CONFIG_H_
  2. #definesqlITE_OMIT_LOAD_EXTENSION1//不需要动态库支持
  3. #defineHAVE_UTIME//使用utime函数而不是utimes函数
  4. #include<semaphore.h>
  5. /*
  6. *不使用VxWorks提供的POSIX标准中的互斥信号量递归接口,因为对于内核程序,POSIX支持*的不是太好
  7. */
  8. #definesqlITE_HOMEGROWN_RECURSIVE_MUTEX1
  9. #include<vxWorks.h>
  10. #endif//_CONFIG_H_

sqlITE_THREADSAFE=@H_404_484@<0 or 1 or 2>

This option controls whether or not code is included in sqlite to enable it to operate safely in a multithreaded environment. The default is sqlITE_THREADSAFE=1 which is safe for use in a multithreaded environment. When compiled with sqlITE_THREADSAFE=0 all mutexing code is omitted and it is unsafe to use sqlite in a multithreaded program. When compiled with sqlITE_THREADSAFE=2,sqlite can be used in a multithreaded program so long as no two threads attempt to use the samedatabase connectionat the same time.

To put it another way,sqlITE_THREADSAFE=1 sets the defaultthreading modeto Serialized. sqlITE_THREADSAFE=2 sets the defaultthreading modeto Multi-threaded. And sqlITE_THREADSAFE=0 sets thethreading modeto Single-threaded.

The value of sqlITE_THREADSAFE can be determined at run-time using thesqlite3_threadsafe()interface.

When sqlite has been compiled with sqlITE_THREADSAFE=1 or sqlITE_THREADSAFE=2 then thethreading modecan be altered at run-time using thesqlite3_config()interface together with one of these verbs:

TheSQLITE_OPEN_NOMUTEXandSQLITE_OPEN_FULLMUTEXflags tosqlite3_open_v2()can also be used to adjust thethreading modeof individualdatabase connectionsat run-time.

Note that when sqlite is compiled with sqlITE_THREADSAFE=0,the code to make sqlite threadsafe is omitted from the build. When this occurs,it is impossible to change thethreading modeat start-time or run-time.

See thethreading modedocumentation for additional information on aspects of using sqlite in a multithreaded environment.

3、调试代码testsqlite378

testsqlite378生成比较简单,具体可以看前面关于嵌入系统调试的内容了。


4、Console输出内容:

You have opened a sqlite3 database named Sample.db3 successfully!

row:21 column=7

The result of querying is :

azResult[0] = DEPT_NO

azResult[1] = DEPARTMENT

azResult[2] = HEAD_DEPT

azResult[3] = MNGR_NO

azResult[4] = BUDGET

azResult[5] = LOCATION

azResult[6] = PHONE_NO

azResult[7] = 000

azResult[8] = Corporate Headquarters

azResult[9] =

azResult[10] = 105

azResult[11] = 1000000

azResult[12] = Monterey

azResult[13] = (408) 555-1234

azResult[14] = 100

azResult[15] = Sales and Marketing

azResult[16] = 000

azResult[17] = 85

azResult[18] = 2000000

azResult[19] = San Francisco

azResult[20] = (415) 555-1234

azResult[21] = 600

azResult[22] = Engineering

azResult[23] = 000

azResult[24] = 2

azResult[25] = 1100000

azResult[26] = Monterey

azResult[27] = (408) 555-1234

azResult[28] = 900

azResult[29] = Finance

azResult[30] = 000

azResult[31] = 46

azResult[32] = 400000

azResult[33] = Monterey

azResult[34] = (408) 555-1234

azResult[35] = 180

azResult[36] = Marketing

azResult[37] = 100

azResult[38] =

azResult[39] = 1500000

azResult[40] = San Francisco

azResult[41] = (415) 555-1234

azResult[42] = 620

azResult[43] = Software Products Div.

azResult[44] = 600

azResult[45] =

azResult[46] = 1200000

azResult[47] = Monterey

azResult[48] = (408) 555-1234

azResult[49] = 621

azResult[50] = Software Development

azResult[51] = 620

azResult[52] =

azResult[53] = 400000

azResult[54] = Monterey

azResult[55] = (408) 555-1234

azResult[56] = 622

azResult[57] = Quality Assurance

azResult[58] = 620

azResult[59] = 9

azResult[60] = 300000

azResult[61] = Monterey

azResult[62] = (408) 555-1234

azResult[63] = 623

azResult[64] = Customer Support

azResult[65] = 620

azResult[66] = 15

azResult[67] = 650000

azResult[68] = Monterey

azResult[69] = (408) 555-1234

azResult[70] = 670

azResult[71] = Consumer Electronics Div.

azResult[72] = 600

azResult[73] = 107

azResult[74] = 1150000

azResult[75] = Burlington VT

azResult[76] = (802) 555-1234

azResult[77] = 671

azResult[78] = Research and Development

azResult[79] = 670

azResult[80] = 20

azResult[81] = 460000

azResult[82] = Burlington VT

azResult[83] = (802) 555-1234

azResult[84] = 672

azResult[85] = Customer Services

azResult[86] = 670

azResult[87] = 94

azResult[88] = 850000

azResult[89] = Burlington VT

azResult[90] = (802) 555-1234

azResult[91] = 130

azResult[92] = Field Office: East Coast

azResult[93] = 100

azResult[94] = 11

azResult[95] = 500000

azResult[96] = Boston

azResult[97] = (617) 555-1234

azResult[98] = 140

azResult[99] = Field Office: Canada

azResult[100] = 100

azResult[101] = 72

azResult[102] = 500000

azResult[103] = Toronto

azResult[104] = (416) 677-1000

azResult[105] = 110

azResult[106] = Pacific Rim Headquarters

azResult[107] = 100

azResult[108] = 34

azResult[109] = 600000

azResult[110] = Kuaui

azResult[111] = (808) 555-1234

azResult[112] = 115

azResult[113] = Field Office: Japan

azResult[114] = 110

azResult[115] = 118

azResult[116] = 500000

azResult[117] = Tokyo

azResult[118] = 3 5350 0901

azResult[119] = 116

azResult[120] = Field Office: Singapore

azResult[121] = 110

azResult[122] =

azResult[123] = 300000

azResult[124] = Singapore

azResult[125] = 3 55 1234

azResult[126] = 120

azResult[127] = European Headquarters

azResult[128] = 100

azResult[129] = 36

azResult[130] = 700000

azResult[131] = London

azResult[132] = 71 235-4400

azResult[133] = 121

azResult[134] = Field Office: Switzerland

azResult[135] = 120

azResult[136] = 141

azResult[137] = 500000

azResult[138] = Zurich

azResult[139] = 1 211 7767

azResult[140] = 123

azResult[141] = Field Office: France

azResult[142] = 120

azResult[143] = 134

azResult[144] = 400000

azResult[145] = Cannes

azResult[146] = 58 68 11 12

azResult[147] = 125

azResult[148] = Field Office: Italy

azResult[149] = 120

azResult[150] = 121

azResult[151] = 400000

azResult[152] = Milan

azResult[153] = 2 430 39 39

从控制输出内容,我们可以看出的结果与表格显示一致,那说明我们的移植成功了

原文链接:https://www.f2er.com/sqlite/202003.html

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