(Back to the list... again) Le 30 mars 2014 14:00, "我想不无聊" <[email protected]> a écrit : > > where should i define the variable,in the wireshark root directory and use it in other modules such as wiretap and epan/dissectors?
Declare it wherever you want. You just need to export the symbol in case you want to use it in different libraries (like wiretap and epan/dissectors). Do a search for WS_VAR_IMPORT to see examples. Regards, Pascal. > ------------------ 原始邮件 ------------------ > 发件人: "Pascal Quantin"<[email protected]> > 发送时间: 2014年3月30日(星期天) 晚上7:55 > 收件人: "我想不无聊"<[email protected]>;"Developer support list for Wireshark"< [email protected]>; > 主题: Re: 回复： [Wireshark-dev] how to use the wireshark source code to developapplication? > (back to the mailing list) > > > 2014-03-30 11:54 GMT+02:00 我想不无聊 <[email protected]>: >> >> If i define the variable in the wireshark directory and i use it in the /wiretap and /epan/dissectors whether or not should i use the WS_DLL_PUBLIC macro,and by the way i use the wireshark 1.6.5 edition,then what should i do. > > > If you use Wireshark 1.6.5 source code, you must declare your structure as WS_VAR_IMPORT instead of extern, and add it to wtap.def file. Something like: > WS_VAR_IMPORT performance* performance_test; > > and in wtap.def: > performance_test DATA > > You can look at other examples of the use of WS_VAR_IMPORT in the source code. > > Regards, > Pascal. > > PS: there is no need to send multiple emails to the mailing list with the same question over and over. > >> >> ------------------ 原始邮件 ------------------ >> 发件人: "Pascal Quantin";<[email protected]>; >> 发送时间: 2014年3月30日(星期天) 下午5:06 >> 收件人: "Developer support list for Wireshark"<[email protected]>; >> 主题: Re: [Wireshark-dev] how to use the wireshark source code to developapplication? >> >> >> Le 30 mars 2014 08:58, "我想不无聊" <[email protected]> a écrit : >> > >> > I want to store some information about packets and transmit among files,so i create a file in wireshark root directory,named performance.h: >> > >> > //performance.h >> > #include <glib.h> >> > typedef struct performance_s >> > { >> > gfloat time[100]; >> > gfloat delay[100]; >> > guint32 packetSize[100]; >> > guint32 payload; >> > guint32 index; >> > guint32 temp_size; >> > gfloat temp_time; >> > }performance; >> > extern peformance* performance_test; >> > >> > in the file ,i declare a struct and declare a pointer to it,then i want to use the variable "performance_test" in file wiretap/libpcap.c, epan/dissectors/packet-ieee80211.c,so i define the variable "peformance_test" in performance.c in wireshark root directory and include the head file in wiretap/libpcap.c, epan/dissectors/packet-ieee80211.c ,but once i use the variable in these two files,when i compile the wireshark project,it come up with one error:undefined reference to 'peformance_test'. >> > >> > it looks like the variable peformance_test should be defined and used in the same file ,if i want to use it in different files,i think i should modify the makefile.common to change the compile process ,but i don't know how .could someone help me fix it,please! >> >> Hi, >> >> Assuming you work on the master branch (Wireshark 1.11.X), if you want to use in libwireshark a variable defined in libwiretap, you should export the symbol with the WS_DLL_PUBLIC macro instead of using extern. Do not forget to include ws_symbol_export.h file also. >> You can search in the code for examples of the use of this macro. >> >> Regards, >> Pascal. > >
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