Re: Infos about the embedded server dll
The function are in chapter 8.4.5 of the manual. I tried using the embedded library in C, then calling it from VB through a DLL without any luck. The libmysql.dll seems to work better. Eric From: Wavyx [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Infos about the embedded server dll Date: Mon, 23 Jun 2003 18:49:02 +0200 Hello, I'm looking for informations about the Embedded Server DLL. There's not a lot of in the manuel (libmysqld section). Where can I Find the available functions? Are they the same as in the C API? I'm planning to use the dll from C#. Does anyone already try to interop with the mysql server engine dll (Pinvoke and DllImport)? Thanks for help Wavyx -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] _ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
suggestions - server options/mysql variables
Hi! Does anyone know any mysql options I can change in the my.ini file or mysql variables to increase the speed of select statements? About database: -uses only select statements for queries -no transactions -if database becomes corrupt in anyway, not a big deal I can recreate it -it is a small database, I do not need recovery, raid or any other backup mechanism -queries generally return very little data I will test any suggestions people have for me. Thanks Eric _ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
RE: suggestions - server options/mysql variables
Hi! All the select statements have indexes on appropriate fields. Mysql appears to run fast, I was just wondering if there was anyway to make it faster. It is currently running on Windows, I have also ported it to HP-UX 11. The queries are of the type : SELECT * FROM textl WHERE parsetext = and filter = GROUP BY code. I think the query code is optimized, I was wondering is there were any settings I could change in mysql to speed it up? or any other tricks to increase speed? I tried setting set-variable = key_buffer_size=64M, but that did not appear to make a big difference. Thanks Eric From: Mike Hillyer [EMAIL PROTECTED] To: Derick Smith [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: RE: suggestions - server options/mysql variables Date: Thu, 19 Jun 2003 09:13:33 -0600 If you have queries that are only selects, in small tables, with few rows, you should have very fast performance as is. Are your queries properly indexed? What hardware are you running on? What do these queries look like? Regards, Mike Hillyer www.vbmysql.com -Original Message- From: Derick Smith [mailto:[EMAIL PROTECTED] Sent: Thursday, June 19, 2003 9:08 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: suggestions - server options/mysql variables Hi! Does anyone know any mysql options I can change in the my.ini file or mysql variables to increase the speed of select statements? About database: -uses only select statements for queries -no transactions -if database becomes corrupt in anyway, not a big deal I can recreate it -it is a small database, I do not need recovery, raid or any other backup mechanism -queries generally return very little data I will test any suggestions people have for me. Thanks Eric _ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql? [EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] _ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Compiling:Not a valid library (invalid magic number).Possibly a 64-bit PA archive library (Mismatched ABI).
Hi! I am porting a program from windows to UNIX and I cannot get it to compile on the UNIX version. Any suggestions?? Are the libraries shipped with mysql correct? Am I compiling it correctly? Any help is appreciated! Thanks Eric Error exit code 1 /opt/ansic/bin/c89 -o bin/ceagtest obj/ceagtest/ceagtest.o -lm lib/mysqldbi.a lib/gcsys.a lib/gcdbi.a lib/sclib.a lib/gparse2.a lib/cfg.a lib/cpk.a lib/gms.a lib/gf.a lib/gtrace.a /software/grs/actr/mysql/lib/libmysys.a /usr/ccs/bin/ld: /software/grs/actr/mysql/lib/libmysys.a: Not a valid library (invalid magic number). Possibly a 64-bit PA archive library (Mismatched ABI). *** Error exit code 1 Server/Version Information: HP-UX 11.00 Operating System mysql status -- /software/grs/actr/mysql/bin/mysql Ver 12.18 Distrib 4.0.12, for hp-hpux11.11 (hppa2.0w) Connection id: 3 Current database: Current user: [EMAIL PROTECTED] SSL:Not in use Current pager: stdout Using outfile: '' Server version: 4.0.12-standard-log Protocol version: 10 Connection: Localhost via UNIX socket Client characterset:latin1 Server characterset:latin1 UNIX socket:/tmp/mysql.sock Uptime: 1 day 16 hours 4 min 20 sec Threads: 1 Questions: 12 Slow queries: 0 Opens: 6 Flush tables: 1 Open tables: 0 Queries per second avg: 0.000 -- mysql _ Add photos to your e-mail with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
performance - speed - length of char field
Hi! Can anyone tell me if a shorter char field will increase the speed of SELECT queries? (The char field will be indexed). This field is not a varchar. Thanks Eric _ Tired of spam? Get advanced junk mail protection with MSN 8. http://join.msn.com/?page=features/junkmail -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: HELP mysql_server_init embedded in a DLL?
Attempts at creating an embedded mySQL DLL for VB: I can successfully use the mysql_init() function from libmysql.lib to create a DLL for VB. However, when I use this function (in a DLL or lib)linked against the libmysqld.lib or mysqlserver.lib it crashes the VB application but not the C application. I tried hard coding the arguments and servergroups for mysql_server_init (I also used memset to initialize the strings to 0), I get the same result. The lib I create will always work with a C program, but the DLL will not work with VB. Does anyone have any more suggestions on how to use the embedded library in a Visual C DLL to link with VB? Thanks Eric p.s: Email received from another individual (Thanks!!): Put the libMySql.dll in the wint\system32 directory (or in the directory where your executable is!) In vb, I use this one the declares: Public Declare Function mysql_init Lib libmySQL (ByVal lMYSQL As Long) As Long Public Declare Function mysql_real_connect Lib libmySQL _ (ByVal lMYSQL As Long, _ ByVal sHostName As String, _ ByVal sUserName As String, _ ByVal sPassword As String, _ ByVal sDbName As String, _ ByVal lPortNum As Long, _ ByVal sSocketName As String, _ ByVal lFlags As Long) As Long Public Function OpenConnection(ByVal sHostName As String, _ ByVal sUserName As String, _ ByVal sPassword As String, _ ByVal sDbName As String, _ Optional ByVal lPortNum As Long = 3306, _ Optional ByVal lFlags As MYSQL_FLAG) As MYSQL_CONNECTION_STATE mlMYSQL = mysql_init(mlMYSQL) If mlMYSQL = 0 Then no connection handler Else 'connect to server If mysql_real_connect(mlMYSQL, msHostname, msUsername, msPassword, msDbName, mlPortNum, , mlFlags) = 0 Then ' oops Else 'connection established ... state is now open End If End If 'setup the return value End Function I myselve created an dll (in vb) which encapsulates all the stuff to connect to the database, use recordsets, (as close as possible to the ADO object model: so with connection, recordset - objects, bookmarks, fields, ...) Hope this helps. From: Gelu Gogancea [EMAIL PROTECTED] To: Derick Smith [EMAIL PROTECTED],[EMAIL PROTECTED],[EMAIL PROTECTED] Subject: Re: HELP mysql_server_init embedded in a DLL? Date: Fri, 28 Feb 2003 14:40:31 +0200 Hi, - Original Message - From: Derick Smith [EMAIL PROTECTED] To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Thursday, February 27, 2003 10:33 PM Subject: Re: HELP mysql_server_init embedded in a DLL? I am posting this again, in hope that I will get a response. I tried doing the following (see VB code below. I got this code from another site): I get the same error message as if I was calling the DLL I created in C which calls mysql_server_init. Is it impossible to call this function from VB or embedded in another DLL from VB? Can I only use the embedded mysql library in C or C++? Thanks Eric Public Declare Function mysql_server_init Lib C:\mysql40\source\lib_release\libmysqld.dll _ (ByVal argc As Long, _ ByVal argv As Byte, _ ByVal groups As Byte) As Long Private Sub cmdmysq_server_init_Click() Dim argv(0) As Byte, groups(0) As Byte Dim i As Long argv(0) = Asc(0) groups(0) = Asc(0) i = mysql_server_init(0, argv, groups) End Sub In my opinion,this will never work because argv and groups are pointed to array which have a pointer char*(*); But anyhow...if you wish to try again this formula, must declare argv and groups ByRef because VB is responsable for the stack and the variable must be initialized before using like argument in function.Since argv and groups are byte is a non-sense to use ASC(). I'm very pessimistic that will be work. From: Derick Smith [EMAIL PROTECTED] To: [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: mysql_server_init embedded in a DLL? Date: Wed, 26 Feb 2003 14:34:28 + Hi! I am trying to create a DLL that will hide embedded mySQL functions for use with VB. I am using mysqlserver.lib. I am able to compile and execute the following code. This has to be done in C because VB is too slow :-( If mysql_server_init function is run in the DLL from Visual Basic. I get the following error message: ..referenced memory at 0x00. The memory could not be read. Without the mysql_server_init function it will run correctly. It will also run correctly when this is compiled as a .lib file linked to a C program. Is it possible to embed mysql_server_init in a DLL? (So the DLL can be used in VB) Thanks in advance for any responses. Thanks Eric header1.h #define GPAPI __stdcall header2.h typedef unsigned long DBS; #define NULLDBS (DBS)0 api.c GPAPI DBS dbNewSet (char * basedir, char
Re: HELP mysql_server_init embedded in a DLL?
I am posting this again, in hope that I will get a response.
I tried doing the following (see VB code below. I got this code from another
site):
I get the same error message as if I was calling the DLL I created in C
which calls mysql_server_init.
Is it impossible to call this function from VB or embedded in another DLL
from VB?
Can I only use the embedded mysql library in C or C++?
Thanks
Eric
Public Declare Function mysql_server_init Lib
C:\mysql40\source\lib_release\libmysqld.dll _
(ByVal argc As Long, _
ByVal argv As Byte, _
ByVal groups As Byte) As Long
Private Sub cmdmysq_server_init_Click()
Dim argv(0) As Byte, groups(0) As Byte
Dim i As Long
argv(0) = Asc(0)
groups(0) = Asc(0)
i = mysql_server_init(0, argv, groups)
End Sub
From: Derick Smith [EMAIL PROTECTED]
To: [EMAIL PROTECTED], [EMAIL PROTECTED]
Subject: mysql_server_init embedded in a DLL?
Date: Wed, 26 Feb 2003 14:34:28 +
Hi!
I am trying to create a DLL that will hide embedded mySQL functions for use
with VB. I am using mysqlserver.lib. I am able to compile and execute the
following code. This has to be done in C because VB is too slow :-(
If mysql_server_init function is run in the DLL from Visual Basic. I get
the following error message: ..referenced memory at 0x00. The
memory could not be read.
Without the mysql_server_init function it will run correctly. It will also
run correctly when this is compiled as a .lib file linked to a C program.
Is it possible to embed mysql_server_init in a DLL? (So the DLL can be used
in VB)
Thanks in advance for any responses.
Thanks
Eric
header1.h
#define GPAPI __stdcall
header2.h
typedef unsigned long DBS;
#define NULLDBS (DBS)0
api.c
GPAPI DBS dbNewSet (char * basedir, char * datadir, char * dbname)
{
return NewSet(basedir,datadir,dbname);
}
newset.c
extern DBS NewSet(char * basedir, char * datadir, char * dbname)
{
DBSET* pSet = CreateSet();
char*args[3];
char strArgs[3][1024];
int iRtn;
int argc = 3;
strcpy(strArgs[0],this_program);
sprintf(strArgs[1],--basedir=%s,basedir);
sprintf(strArgs[2],--datadir=%s,datadir);
args[0]= strArgs[0];
args[1]= strArgs[1];
args[2]= strArgs[2];
/* If I comment out this line of code,
the DLL will run correctly.
If mysql_server_init function is run in the DLL. I get the following
error message: ..referenced memory at 0x00. The
memory could not be read */
iRtn = mysql_server_init(3, args, server_groups);
if (pSet ==0 ) return NULLDBS;
memset(pSet, 0, sizeof(DBSET)); /* Zero the structure.*/
pSet-size = sizeof(DBSET);/* Assign structure size. */
pSet-magic = DBS_MAGIC; /* Assign magic number. */
return (DBS)(void*)pSet;
}
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mysql_server_init embedded in a DLL?
Hi!
I am trying to create a DLL that will hide embedded mySQL functions for use
with VB. I am using mysqlserver.lib. I am able to compile and execute the
following code. This has to be done in C because VB is too slow :-(
If mysql_server_init function is run in the DLL from Visual Basic. I get the
following error message: ..referenced memory at 0x00. The
memory could not be read.
Without the mysql_server_init function it will run correctly. It will also
run correctly when this is compiled as a .lib file linked to a C program.
Is it possible to embed mysql_server_init in a DLL? (So the DLL can be used
in VB)
Thanks in advance for any responses.
Thanks
Eric
header1.h
#define GPAPI __stdcall
header2.h
typedef unsigned long DBS;
#define NULLDBS (DBS)0
api.c
GPAPI DBS dbNewSet (char * basedir, char * datadir, char * dbname)
{
return NewSet(basedir,datadir,dbname);
}
newset.c
extern DBS NewSet(char * basedir, char * datadir, char * dbname)
{
DBSET* pSet = CreateSet();
char*args[3];
char strArgs[3][1024];
int iRtn;
int argc = 3;
strcpy(strArgs[0],this_program);
sprintf(strArgs[1],--basedir=%s,basedir);
sprintf(strArgs[2],--datadir=%s,datadir);
args[0]= strArgs[0];
args[1]= strArgs[1];
args[2]= strArgs[2];
/* If I comment out this line of code,
the DLL will run correctly.
If mysql_server_init function is run in the DLL. I get the following
error message: ..referenced memory at 0x00. The
memory could not be read */
iRtn = mysql_server_init(3, args, server_groups);
if (pSet ==0 ) return NULLDBS;
memset(pSet, 0, sizeof(DBSET)); /* Zero the structure.*/
pSet-size = sizeof(DBSET);/* Assign structure size. */
pSet-magic = DBS_MAGIC; /* Assign magic number. */
return (DBS)(void*)pSet;
}
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Visual Basic Embedded VC++ DLL
Hi! Has anyone created a DLL in VC++ the uses the embedded mysqlserver.lib library? Is it possible to do this? Is there any special settings that are needed? I have compiled a DLL that does this, but then I run a function wich encapsulates mysql_server_init(), I get a memory error and my VB program which references the DLL I created crashes. (When I comment out the section of code that references mysql_server_init, the code executes without errors and when I link this lib file to a C program the code also works without problems). Any suggestions? Thanks Eric Talk to you Later. -- Derick -- _ The new MSN 8: smart spam protection and 2 months FREE* http://join.msn.com/?page=features/junkmail - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
libmysqld.lib
Hi! I want to emebed libmysqld.lib into a DLL I am making for Visual Basic. I need to make the DLL in C because it is going to perform other functions (i.e I do not want to use the Public Declare in VB to access the DLL). I need the libmysqld.lib library. I could use LoadLibrary to load it dynamically, but I think this would be more work. Does anyone know where I can get it? Does anyone know when it will be available on the mysql.com website? Does anyone know when the source code for the libmysqld.dll will be distributed (Windows version)? (I thought mysql was open source?) Thanks Eric _ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
