Loadrunner的Tuxedo脚本分析，基本流程和基本函数介绍

#include "lrt.h"
#include "replay.vdf"

vuser_init()
{

//=================================================================================================================
// 第一个交易

// 1.设置变量组: Sets a list of environment variables.
lrt_set_env_list(env_allow_array);

// 2.从配置文件读取环境变量: Adds variables to the environment from a file.
lrt_tuxreadenv("C:\\Program Files\\test\\test8\\etc\\tuxedoenv.ini", "TUXCOMM");

//事务开始
lr_start_transaction("01_login");

// 3. Modifies an existing environment value or adds a value to the environment.
lrt_tuxputenv("ULOGPFX=c:\\log\\330100-300302");

lr_think_time(25);

// 4.分配空间: Allocates a new buffer.
// The lrt_tpalloc function allocates a new buffer and returns a pointer to a buffer of specified type. Since some buffer types
// require initialization before they can be used, lrt_tpalloc initializes a buffer after it is allocated, before it is returned.
data_0 = lrt_tpalloc("FML32", "", 65000);

// 5.进行初始化: Initializes an existing FML buffer.
// 注意: data_0 在replay.vdf 中已经被定义,同时在此处被初始化,初始化后,就可以向里面添加field-value对了.
lrt_Finitialize32((FBFR32*)data_0);

// 6.向data_0中加field-value对,就是传给后台tuxedo服务的数据:
lrt_Fadd32_fld((FBFR32*)data_0, "id=167772364", "value=330100", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=167772373", "value=10.253.1.138", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=167772374", "value=000000000000", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=167772375", "value=1", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=167772422", "value=300302", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=167772423", "value=000000", LRT_END_OF_PARMS);

// 7. 分配空间给data_1: Allocates a new buffer.
data_1 = lrt_tpalloc("FML32", "", 65000);

// 8. 使用lrt_tpcall 调用服务,发送的数据是data_0,服务器的返回信息保存在data_1中.
// lrt_tpcall Sends a service request and awaits its reply.
// int lrt_tpcall ( char *svc, char *idata, long ilen, char **odata, long *olen, long flags );

// svc Requested service (can be parameterized).
// idata Data portion of the request.
// ilen Length of request data to send.
// odata Reply data.
// olen Length of reply data.
// flags Valid flags: TPNOTRAN- SVC will not be performed on behalf of caller's transaction,
// TPNOCHANGE - buffer type of reply data is not allowed to change, TPNOBLOCK - request not sent if blocking condition exists,
// TPNOTIME - caller immune to blocking timeouts, TPSIGRSTRT - any interrupted system calls are re-issued after lrt_tpcall.

tpresult_int = lrt_tpcall("new_css_Login",
data_0,
0,
&data_1,
&olen,
0);
/* Returned FML32 buffer 1 */

// 9.使用lrt_save32_fld_val 从服务器返回信息中获取需要的数据:
// The lrt_save32_fld_val function saves the current value of an FML32 buffer to a parameter specified by paramName.
// lrt_save32_fld_val(fbfr, "id=xxxx", 0, "parameter");
// lrt_save32_fld_val(fbfr, "name=xxxx", 0, "parameter");
lrt_save32_fld_val((FBFR32*)data_1,"id=167772363",0,"returnValue") ;
// print
lr_output_message("返回值:%s",lr_eval_string("{returnValue}") ) ;

// 10.如果出错,则停止事务Aborts the current transaction if the previous Tuxedo function resulted in an error.
lrt_abort_on_error();

//11.释放之前的空间和连接:
// The lrt_tpfree function frees a buffer that was previously obtained by either lrt_tpalloc or lrt_tprealloc.
lrt_tpfree(data_0);
lrt_tpfree(data_1);
// The lrt_tpterm function removes a client from a System/T application.
// If the client is in transaction mode, then the transaction is rolled back.
lrt_tpterm();

// 第一个交易已经完成.
//=================================================================================================================

// 进行第二个交易:

// 其他的操作和第一轮操作类似:
//分配新的空间
data_0 = lrt_tpalloc("FML32", "", 65535);
// 重新初始化:
lrt_Finitialize32((FBFR32*)data_0);
//设置数据
lrt_Fadd32_fld((FBFR32*)data_0, "id=33554633", "value=5084013", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=33554637", "value=9901", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=33554640", "value=1", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=33554642", "value=920041", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=42755520", "value=0", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=67109070", "value=0", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=67109071", "value=1", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=67109076", "value=Q", LRT_END_OF_PARMS);
// 为返回值分配空间:
data_1 = lrt_tpalloc("FML32", "", 65535);
// 调用服务:
tpresult_int = lrt_tpcall("csi_01",
data_0,
0,
&data_1,
&olen,
0);
/* Returned FML32 buffer 2 */
lrt_abort_on_error();

// 释放
lrt_tpfree(data_0);
lrt_tpfree(data_1);
lrt_tpterm();

// 第二个交易完成
//=================================================================================================================

lr_end_transaction("01_login", LR_AUTO);

lr_start_transaction("05_select");

// 第三个及以后的所有交易,都与之前的交易类似:
//=================================================================================================================

lr_think_time(55);
data_0 = lrt_tpalloc("FML32", "", 65535);
lrt_Finitialize32((FBFR32*)data_0);

lrt_Fadd32_fld((FBFR32*)data_0, "id=1101360", "value=1", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=1101360", "value=0", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=1101360", "value=0", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=1101360", "value=0", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=33554633", "value=5084013", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=33554637", "value=9901", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=33554640", "value=1", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=33554642", "value=110001", LRT_END_OF_PARMS);

data_1 = lrt_tpalloc("FML32", "", 65535);
tpresult_int = lrt_tpcall("csi_01",
data_0,
0,
&data_1,
&olen,
0);
/* Returned FML32 buffer 3 */
lrt_abort_on_error();

lrt_tpfree(data_0);
lrt_tpfree(data_1);
lrt_tpterm();

//=================================================================================================================

data_0 = lrt_tpalloc("FML32", "", 65535);
lrt_Finitialize32((FBFR32*)data_0);

lrt_Fadd32_fld((FBFR32*)data_0, "id=1101225", "value=0", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=1101307", "value=0", LRT_END_OF_PARMS);
lrt_Fadd32_fld((FBFR32*)data_0, "id=168873390", "value=", LRT_END_OF_PARMS);

data_1 = lrt_tpalloc("FML32", "", 65535);
tpresult_int = lrt_tpcall("csi_01",
data_0,
0,
&data_1,
&olen,
0);
/* Returned FML32 buffer 11 */
lrt_abort_on_error();

lrt_tpfree(data_0);
lrt_tpfree(data_1);
lrt_tpterm();
lr_end_transaction("05_select", LR_AUTO);

//=================================================================================================================

return 0;
}

Action()
{
return 0;
}

vuser_end()
{
return 0;
}

replay.vdf

#ifndef TUXVDF_H
#define TUXVDF_H
char* data_0;
char* data_1;

/* Returned FML32 buffer 1
field: "id=33554633", "occurrence=0", "value=5084013"
field: "id=33554637", "occurrence=0", "value=9901"
Reply buffer */

#endif /* TUXVDF_H */

loadrunner wdiff对比返回结果，分析异同，进行关联
也可以监测服务器收到的和返回的信息，分析