opnet调试之结构错误

lmz:
截图中命令不准，但显示信息是正确的。

人为制造错误

可用的包交换网络中的外围节点的proc进程：

将其中的xmt()函数修改为：

static void xmt(void)        {        Packet * pkptr;        FIN(xmt());        pkptr = op_pk_get (RCV_IN_STRM);  //以前的参数是 SRC_IN_STRM        op_pk_nfd_set_int32 (pkptr, "dest_address",            (int)op_dist_outcome (address_dist));        op_pk_send (pkptr, XMT_OUT_STRM);        FOUT;        } 

直接运行仿真

message

Beginning simulation of lmz_pksw_net-baseline at 22:23:35 Tue Jan 03 2017----Kernel: development (not optimized), sequential, 32-bit address space----<<< Program Abort >>>Packet pointer is NIL.T (10), EV (13), MOD (top.pksw1.node_0.proc), KP (op_pk_nfd_set_int32)----

error_log

<<< Program Abort >>>  * Time:      22:25:26 Tue Jan 03 2017  * Product:   modeler (32-bit)  * Program:   op_runsim (Version 14.5.A PL1 Build 7116 32-bit)  * System:    Windows NT 6.2 Build 9200  * Package:   process (lmz_pksw_nd_proc) at module (top.pksw1.node_0.proc)  * Function:  sim_err_pk_access  * Error:     Packet pointer is NIL.               T (10), EV (13), MOD (top.pksw1.node_0.proc), KP (op_pk_nfd_set_int32)  * Function call stack: (builds down)    ------------------------------------------------------------             Call   Block             Count  Line#  Function    ------------------------------------------------------------     0)          1    152  0x2a286c00 [name not available]     1)          1   2211  0x00004c00 [name not available]     2)          1   1358  0x0000c400 [name not available]     3)          1    399  m3_main     4)          1   1074  sim_main     5)          1   2894  sim_ev_loop     6)          1    384  sim_strm_insert     7)         14    910  sim_obj_qps_intrpt     8)          5    140  lmz_pksw_nd_proc [idle -> idle : SRC_ARRVL / xmt()]     9)          1     78  xmt()    10)          1   8097  op_pk_nfd_set_int32 (pkptr, fd_name, value)    11)          1  14455  sim_pk_nfd_set_check_args    12)          1   4811  sim_err_pk_access    ------------------------------------------------------------

最重点的信息是出错在事件13执行之前：

T (10), EV (13), MOD (top.pksw1.node_0.proc), KP (op_pk_nfd_set_int32)

打开ODB

evstop 13

将仿真停止在事件13执行之前

continue

fulltrace

为了观察中间执行的代码，启动完全跟踪

status

查看已经设定的中断以及其他信息

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tags:opnet