processing - Page 244 - Developer IT

error LNK2005: xxx already defined in MSVCRT.lib(MSVCR100.dll) C:\something\LIBCMT.lib(setlocal.obj)

- by volpack

Hello, I'm using DCMTK library for reading Dicom files (Image format used in medical image processing.) I'm having a problem in compiling this DCMTK source code. DCMTK uses some additional external libraries (zlib, tiff, libpng, libxml2, libiconv). I know that all libraries should be generated with same Code Generation Options. I've downloaded the compiled versions of these support libraries which are compiled with "Multithreaded DLL" runtime options (/MD). In each project of DCMTK source code I ensured that runtime options are "Multithreaded DLL" (/MD). But still I'm getting these errors: Error 238 error LNK2005: ___iob_func already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmp2pgm Error 239 error LNK2005: __lock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmp2pgm Error 240 error LNK2005: __unlock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmp2pgm Error 241 error LNK2005: __initterm_e already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmp2pgm Error 242 error LNK2005: _exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmp2pgm Error 243 error LNK2005: __exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmp2pgm Error 244 error LNK2005: __cexit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmp2pgm Error 245 error LNK2005: __amsg_exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmp2pgm Error 246 error LNK2005: _fflush already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(fflush.obj) dcmp2pgm Error 247 error LNK2005: __errno already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(dosmap.obj) dcmp2pgm Error 248 error LNK2005: __invoke_watson already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(invarg.obj) dcmp2pgm Error 249 error LNK2005: "void __cdecl terminate(void)" (?terminate@@YAXXZ) already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(hooks.obj) dcmp2pgm Error 250 error LNK2005: ___xi_a already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmp2pgm Error 251 error LNK2005: ___xi_z already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmp2pgm Error 252 error LNK2005: ___xc_a already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmp2pgm Error 253 error LNK2005: ___xc_z already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmp2pgm Error 254 error LNK2005: __unlock already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(mlock.obj) dcmp2pgm Error 255 error LNK2005: __lock already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(mlock.obj) dcmp2pgm Error 256 error LNK2005: __XcptFilter already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(winxfltr.obj) dcmp2pgm Error 257 error LNK2005: _mainCRTStartup already defined in MSVCRT.lib(crtexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0.obj) dcmp2pgm Error 258 error LNK2005: ___set_app_type already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(errmode.obj) dcmp2pgm Error 259 error LNK2005: __configthreadlocale already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(setlocal.obj) dcmp2pgm Error 260 error LNK2005: _getenv already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(getenv.obj) dcmp2pgm Error 261 error LNK2005: __isctype already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(isctype.obj) dcmp2pgm Error 262 error LNK2005: __strnicmp already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(strnicmp.obj) dcmp2pgm Error 263 error LNK2005: __close already defined in LIBCMT.lib(close.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 264 error LNK2005: __fileno already defined in LIBCMT.lib(fileno.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 265 error LNK2005: _calloc already defined in LIBCMT.lib(calloc.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 266 error LNK2005: _atol already defined in LIBCMT.lib(atox.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 267 error LNK2005: _strcspn already defined in LIBCMT.lib(strcspn.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 268 error LNK2005: __stricmp already defined in LIBCMT.lib(stricmp.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 269 error LNK2005: _atoi already defined in LIBCMT.lib(atox.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 270 error LNK2005: __lseek already defined in LIBCMT.lib(lseek.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 271 error LNK2005: __read already defined in LIBCMT.lib(read.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 272 error LNK2005: __write already defined in LIBCMT.lib(write.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 273 error LNK2005: __open already defined in LIBCMT.lib(open.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 274 error LNK2005: __get_osfhandle already defined in LIBCMT.lib(osfinfo.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmp2pgm Error 278 error LNK1169: one or more multiply defined symbols found C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\Release\dcmp2pgm.exe 1 1 dcmp2pgm Error 201 error LNK2005: ___iob_func already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmprscp Error 202 error LNK2005: __lock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmprscp Error 203 error LNK2005: __unlock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmprscp Error 204 error LNK2005: __initterm_e already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmprscp Error 205 error LNK2005: _exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmprscp Error 206 error LNK2005: __exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmprscp Error 207 error LNK2005: __cexit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmprscp Error 208 error LNK2005: __amsg_exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmprscp Error 209 error LNK2005: _fflush already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(fflush.obj) dcmprscp Error 210 error LNK2005: __errno already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(dosmap.obj) dcmprscp Error 211 error LNK2005: __invoke_watson already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(invarg.obj) dcmprscp Error 212 error LNK2005: "void __cdecl terminate(void)" (?terminate@@YAXXZ) already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(hooks.obj) dcmprscp Error 213 error LNK2005: ___xi_a already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmprscp Error 214 error LNK2005: ___xi_z already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmprscp Error 215 error LNK2005: ___xc_a already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmprscp Error 216 error LNK2005: ___xc_z already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmprscp Error 217 error LNK2005: __unlock already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(mlock.obj) dcmprscp Error 218 error LNK2005: __lock already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(mlock.obj) dcmprscp Error 219 error LNK2005: __XcptFilter already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(winxfltr.obj) dcmprscp Error 220 error LNK2005: __stricmp already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(stricmp.obj) dcmprscp Error 221 error LNK2005: _mainCRTStartup already defined in MSVCRT.lib(crtexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0.obj) dcmprscp Error 222 error LNK2005: ___set_app_type already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(errmode.obj) dcmprscp Error 223 error LNK2005: __configthreadlocale already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(setlocal.obj) dcmprscp Error 224 error LNK2005: _getenv already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(getenv.obj) dcmprscp Error 225 error LNK2005: __isctype already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(isctype.obj) dcmprscp Error 226 error LNK2005: __strnicmp already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(strnicmp.obj) dcmprscp Error 227 error LNK2005: __close already defined in LIBCMT.lib(close.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscp Error 228 error LNK2005: __fileno already defined in LIBCMT.lib(fileno.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscp Error 229 error LNK2005: __lseek already defined in LIBCMT.lib(lseek.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscp Error 230 error LNK2005: __read already defined in LIBCMT.lib(read.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscp Error 231 error LNK2005: __write already defined in LIBCMT.lib(write.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscp Error 232 error LNK2005: __open already defined in LIBCMT.lib(open.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscp Error 233 error LNK2005: __get_osfhandle already defined in LIBCMT.lib(osfinfo.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscp Error 237 error LNK1169: one or more multiply defined symbols found C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\Release\dcmprscp.exe 1 1 dcmprscp Error 160 error LNK2005: ___iob_func already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmprscu Error 161 error LNK2005: __lock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmprscu Error 162 error LNK2005: __unlock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmprscu Error 163 error LNK2005: __initterm_e already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmprscu Error 164 error LNK2005: _exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmprscu Error 165 error LNK2005: __exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmprscu Error 166 error LNK2005: __cexit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmprscu Error 167 error LNK2005: __amsg_exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmprscu Error 168 error LNK2005: _fflush already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(fflush.obj) dcmprscu Error 169 error LNK2005: __errno already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(dosmap.obj) dcmprscu Error 170 error LNK2005: __invoke_watson already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(invarg.obj) dcmprscu Error 171 error LNK2005: "void __cdecl terminate(void)" (?terminate@@YAXXZ) already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(hooks.obj) dcmprscu Error 172 error LNK2005: ___xi_a already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmprscu Error 173 error LNK2005: ___xi_z already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmprscu Error 174 error LNK2005: ___xc_a already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmprscu Error 175 error LNK2005: ___xc_z already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmprscu Error 176 error LNK2005: __unlock already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(mlock.obj) dcmprscu Error 177 error LNK2005: __lock already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(mlock.obj) dcmprscu Error 178 error LNK2005: __XcptFilter already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(winxfltr.obj) dcmprscu Error 179 error LNK2005: _mainCRTStartup already defined in MSVCRT.lib(crtexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0.obj) dcmprscu Error 180 error LNK2005: ___set_app_type already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(errmode.obj) dcmprscu Error 181 error LNK2005: __configthreadlocale already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(setlocal.obj) dcmprscu Error 182 error LNK2005: _getenv already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(getenv.obj) dcmprscu Error 183 error LNK2005: __isctype already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(isctype.obj) dcmprscu Error 184 error LNK2005: __strnicmp already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(strnicmp.obj) dcmprscu Error 185 error LNK2005: __close already defined in LIBCMT.lib(close.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 186 error LNK2005: __fileno already defined in LIBCMT.lib(fileno.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 187 error LNK2005: _calloc already defined in LIBCMT.lib(calloc.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 188 error LNK2005: _atol already defined in LIBCMT.lib(atox.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 189 error LNK2005: _strcspn already defined in LIBCMT.lib(strcspn.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 190 error LNK2005: __stricmp already defined in LIBCMT.lib(stricmp.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 191 error LNK2005: _atoi already defined in LIBCMT.lib(atox.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 192 error LNK2005: __lseek already defined in LIBCMT.lib(lseek.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 193 error LNK2005: __read already defined in LIBCMT.lib(read.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 194 error LNK2005: __write already defined in LIBCMT.lib(write.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 195 error LNK2005: __open already defined in LIBCMT.lib(open.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 196 error LNK2005: __get_osfhandle already defined in LIBCMT.lib(osfinfo.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmprscu Error 200 error LNK1169: one or more multiply defined symbols found C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\Release\dcmprscu.exe dcmprscu Error 119 error LNK2005: ___iob_func already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmpsprt Error 120 error LNK2005: __lock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmpsprt Error 121 error LNK2005: __unlock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(_file.obj) dcmpsprt Error 122 error LNK2005: __initterm_e already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmpsprt Error 123 error LNK2005: _exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmpsprt Error 124 error LNK2005: __exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmpsprt Error 125 error LNK2005: __cexit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmpsprt Error 126 error LNK2005: __amsg_exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0dat.obj) dcmpsprt Error 127 error LNK2005: _fflush already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(fflush.obj) dcmpsprt Error 128 error LNK2005: __errno already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(dosmap.obj) dcmpsprt Error 129 error LNK2005: __invoke_watson already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(invarg.obj) dcmpsprt Error 130 error LNK2005: "void __cdecl terminate(void)" (?terminate@@YAXXZ) already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(hooks.obj) dcmpsprt Error 131 error LNK2005: ___xi_a already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmpsprt Error 132 error LNK2005: ___xi_z already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmpsprt Error 133 error LNK2005: ___xc_a already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmpsprt Error 134 error LNK2005: ___xc_z already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0init.obj) dcmpsprt Error 135 error LNK2005: __unlock already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(mlock.obj) dcmpsprt Error 136 error LNK2005: __lock already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(mlock.obj) dcmpsprt Error 137 error LNK2005: __XcptFilter already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(winxfltr.obj) dcmpsprt Error 138 error LNK2005: _mainCRTStartup already defined in MSVCRT.lib(crtexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(crt0.obj) dcmpsprt Error 139 error LNK2005: ___set_app_type already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(errmode.obj) dcmpsprt Error 140 error LNK2005: __configthreadlocale already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(setlocal.obj) dcmpsprt Error 141 error LNK2005: _getenv already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(getenv.obj) dcmpsprt Error 142 error LNK2005: __isctype already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(isctype.obj) dcmpsprt Error 143 error LNK2005: __strnicmp already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\LIBCMT.lib(strnicmp.obj) dcmpsprt Error 144 error LNK2005: __close already defined in LIBCMT.lib(close.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 145 error LNK2005: __fileno already defined in LIBCMT.lib(fileno.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 146 error LNK2005: _calloc already defined in LIBCMT.lib(calloc.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 147 error LNK2005: _atol already defined in LIBCMT.lib(atox.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 148 error LNK2005: _strcspn already defined in LIBCMT.lib(strcspn.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 149 error LNK2005: __stricmp already defined in LIBCMT.lib(stricmp.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 150 error LNK2005: _atoi already defined in LIBCMT.lib(atox.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 151 error LNK2005: __lseek already defined in LIBCMT.lib(lseek.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 152 error LNK2005: __read already defined in LIBCMT.lib(read.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 153 error LNK2005: __write already defined in LIBCMT.lib(write.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 154 error LNK2005: __open already defined in LIBCMT.lib(open.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 155 error LNK2005: __get_osfhandle already defined in LIBCMT.lib(osfinfo.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\MSVCRT.lib(MSVCR100.dll) dcmpsprt Error 159 error LNK1169: one or more multiply defined symbols found C:\dcmtk-3.5.4-src\CMakeBinaries\dcmpstat\apps\Release\dcmpsprt.exe 1 1 dcmpsprt Error 61 error LNK2005: ___iob_func already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(_file.obj) dsr2html Error 62 error LNK2005: __lock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(_file.obj) dsr2html Error 63 error LNK2005: __unlock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(_file.obj) dsr2html Error 64 error LNK2005: __initterm_e already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(crt0dat.obj) dsr2html Error 65 error LNK2005: _exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(crt0dat.obj) dsr2html Error 66 error LNK2005: __exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(crt0dat.obj) dsr2html Error 67 error LNK2005: __cexit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(crt0dat.obj) dsr2html Error 68 error LNK2005: __amsg_exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(crt0dat.obj) dsr2html Error 69 error LNK2005: _fflush already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(fflush.obj) dsr2html Error 70 error LNK2005: __errno already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(dosmap.obj) dsr2html Error 71 error LNK2005: __invoke_watson already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(invarg.obj) dsr2html Error 72 error LNK2005: "void __cdecl terminate(void)" (?terminate@@YAXXZ) already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(hooks.obj) dsr2html Error 73 error LNK2005: ___xi_a already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(crt0init.obj) dsr2html Error 74 error LNK2005: ___xi_z already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(crt0init.obj) dsr2html Error 75 error LNK2005: ___xc_a already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(crt0init.obj) dsr2html Error 76 error LNK2005: ___xc_z already defined in MSVCRT.lib(cinitexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(crt0init.obj) dsr2html Error 77 error LNK2005: __unlock already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(mlock.obj) dsr2html Error 78 error LNK2005: __lock already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(mlock.obj) dsr2html Error 79 error LNK2005: __XcptFilter already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(winxfltr.obj) dsr2html Error 80 error LNK2005: _mainCRTStartup already defined in MSVCRT.lib(crtexe.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(crt0.obj) dsr2html Error 81 error LNK2005: ___set_app_type already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(errmode.obj) dsr2html Error 82 error LNK2005: __configthreadlocale already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(setlocal.obj) dsr2html Error 83 error LNK2005: _getenv already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(getenv.obj) dsr2html Error 84 error LNK2005: __isctype already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(isctype.obj) dsr2html Error 85 error LNK2005: __close already defined in LIBCMT.lib(close.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\MSVCRT.lib(MSVCR100.dll) dsr2html Error 86 error LNK2005: __fileno already defined in LIBCMT.lib(fileno.obj) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\MSVCRT.lib(MSVCR100.dll) dsr2html Error 90 error LNK1169: one or more multiply defined symbols found C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\Release\dsr2html.exe 1 1 dsr2html Error 31 error LNK2005: ___iob_func already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(_file.obj) dsr2xml Error 32 error LNK2005: __lock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(_file.obj) dsr2xml Error 33 error LNK2005: __unlock_file already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(_file.obj) dsr2xml Error 34 error LNK2005: __initterm_e already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCMT.lib(crt0dat.obj) dsr2xml Error 35 error LNK2005: _exit already defined in MSVCRT.lib(MSVCR100.dll) C:\dcmtk-3.5.4-src\CMakeBinaries\dcmsr\apps\LIBCM

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Scripting with the Sun ZFS Storage 7000 Appliance

- by Geoff Ongley

The Sun ZFS Storage 7000 appliance has a user friendly and easy to understand graphical web based interface we call the "BUI" or "Browser User Interface".This interface is very useful for many tasks, but in some cases a script (or workflow) may be more appropriate, such as:Repetitive tasksTasks which work on (or obtain information about) a large number of shares or usersTasks which are triggered by an alert threshold (workflows)Tasks where you want a only very basic input, but a consistent output (workflows)The appliance scripting language is based on ECMAscript 3 (close to javascript). I'm not going to cover ECMAscript 3 in great depth (I'm far from an expert here), but I would like to show you some neat things you can do with the appliance, to get you started based on what I have found from my own playing around.I'm making the assumption you have some sort of programming background, and understand variables, arrays, functions to some extent - but of course if something is not clear, please let me know so I can fix it up or clarify it.Variable Declarations and ArraysVariablesECMAScript is a dynamically and weakly typed language. If you don't know what that means, google is your friend - but at a high level it means we can just declare variables with no specific type and on the fly.For example, I can declare a variable and use it straight away in the middle of my code, for example:projects=list();Which makes projects an array of values that are returned from the list(); function (which is usable in most contexts). With this kind of variable, I can do things like:projects.length (this property on array tells you how many objects are in it, good for for loops etc). Alternatively, I could say:projects=3;and now projects is just a simple number.Should we declare variables like this so loosely? In my opinion, the answer is no - I feel it is a better practice to declare variables you are going to use, before you use them - and given them an initial value. You can do so as follows:var myVariable=0;To demonstrate the ability to just randomly assign and change the type of variables, you can create a simple script at the cli as follows (bold for input):fishy10:> script("." to run)> run("cd /");("." to run)> run ("shares");("." to run)> var projects;("." to run)> projects=list();("." to run)> printf("Number of projects is: %d\n",projects.length);("." to run)> projects=152;("." to run)> printf("Value of the projects variable as an integer is now: %d\n",projects);("." to run)> .Number of projects is: 7Value of the projects variable as an integer is now: 152You can also confirm this behaviour by checking the typeof variable we are dealing with:fishy10:> script("." to run)> run("cd /");("." to run)> run ("shares");("." to run)> var projects;("." to run)> projects=list();("." to run)> printf("var projects is of type %s\n",typeof(projects));("." to run)> projects=152;("." to run)> printf("var projects is of type %s\n",typeof(projects));("." to run)> .var projects is of type objectvar projects is of type numberArraysSo you likely noticed that we have already touched on arrays, as the list(); (in the shares context) stored an array into the 'projects' variable.But what if you want to declare your own array? Easy! This is very similar to Java and other languages, we just instantiate a brand new "Array" object using the keyword new:var myArray = new Array();will create an array called "myArray".A quick example:fishy10:> script("." to run)> testArray = new Array();("." to run)> testArray[0]="This";("." to run)> testArray[1]="is";("." to run)> testArray[2]="just";("." to run)> testArray[3]="a";("." to run)> testArray[4]="test";("." to run)> for (i=0; i < testArray.length; i++)("." to run)> {("." to run)> printf("Array element %d is %s\n",i,testArray[i]);("." to run)> }("." to run)> .Array element 0 is ThisArray element 1 is isArray element 2 is justArray element 3 is aArray element 4 is testWorking With LoopsFor LoopFor loops are very similar to those you will see in C, java and several other languages. One of the key differences here is, as you were made aware earlier, we can be a bit more sloppy with our variable declarations.The general way you would likely use a for loop is as follows:for (variable; test-case; modifier for variable){}For example, you may wish to declare a variable i as 0; and a MAX_ITERATIONS variable to determine how many times this loop should repeat:var i=0;var MAX_ITERATIONS=10;And then, use this variable to be tested against some case existing (has i reached MAX_ITERATIONS? - if not, increment i using i++);for (i=0; i < MAX_ITERATIONS; i++){ // some work to do}So lets run something like this on the appliance:fishy10:> script("." to run)> var i=0;("." to run)> var MAX_ITERATIONS=10;("." to run)> for (i=0; i < MAX_ITERATIONS; i++)("." to run)> {("." to run)> printf("The number is %d\n",i);("." to run)> }("." to run)> .The number is 0The number is 1The number is 2The number is 3The number is 4The number is 5The number is 6The number is 7The number is 8The number is 9While LoopWhile loops again are very similar to other languages, we loop "while" a condition is met. For example:fishy10:> script("." to run)> var isTen=false;("." to run)> var counter=0;("." to run)> while(isTen==false)("." to run)> {("." to run)> if (counter==10) ("." to run)> { ("." to run)> isTen=true; ("." to run)> } ("." to run)> printf("Counter is %d\n",counter);("." to run)> counter++; ("." to run)> }("." to run)> printf("Loop has ended and Counter is %d\n",counter);("." to run)> .Counter is 0Counter is 1Counter is 2Counter is 3Counter is 4Counter is 5Counter is 6Counter is 7Counter is 8Counter is 9Counter is 10Loop has ended and Counter is 11So what do we notice here? Something has actually gone wrong - counter will technically be 11 once the loop completes... Why is this?Well, if we have a loop like this, where the 'while' condition that will end the loop may be set based on some other condition(s) existing (such as the counter has reached 10) - we must ensure that we terminate this iteration of the loop when the condition is met - otherwise the rest of the code will be followed which may not be desirable. In other words, like in other languages, we will only ever check the loop condition once we are ready to perform the next iteration, so any other code after we set "isTen" to be true, will still be executed as we can see it was above.We can avoid this by adding a break into our loop once we know we have set the condition - this will stop the rest of the logic being processed in this iteration (and as such, counter will not be incremented). So lets try that again:fishy10:> script("." to run)> var isTen=false;("." to run)> var counter=0;("." to run)> while(isTen==false)("." to run)> {("." to run)> if (counter==10) ("." to run)> { ("." to run)> isTen=true; ("." to run)> break;("." to run)> } ("." to run)> printf("Counter is %d\n",counter);("." to run)> counter++; ("." to run)> }("." to run)> printf("Loop has ended and Counter is %d\n", counter);("." to run)> .Counter is 0Counter is 1Counter is 2Counter is 3Counter is 4Counter is 5Counter is 6Counter is 7Counter is 8Counter is 9Loop has ended and Counter is 10Much better!Methods to Obtain and Manipulate DataGet MethodThe get method allows you to get simple properties from an object, for example a quota from a user. The syntax is fairly simple:var myVariable=get('property');An example of where you may wish to use this, is when you are getting a bunch of information about a user (such as quota information when in a shares context):var users=list();for(k=0; k < users.length; k++){ user=users[k]; run('select ' + user); var username=get('name'); var usage=get('usage'); var quota=get('quota');...Which you can then use to your advantage - to print or manipulate infomation (you could change a user's information with a set method, based on the information returned from the get method). The set method is explained next.Set MethodThe set method can be used in a simple manner, similar to get. The syntax for set is:set('property','value'); // where value is a string, if it was a number, you don't need quotesFor example, we could set the quota on a share as follows (first observing the initial value):fishy10:shares default/test-geoff> script("." to run)> var currentQuota=get('quota');("." to run)> printf("Current Quota is: %s\n",currentQuota);("." to run)> set('quota','30G');("." to run)> run('commit');("." to run)> currentQuota=get('quota');("." to run)> printf("Current Quota is: %s\n",currentQuota);("." to run)> .Current Quota is: 0Current Quota is: 32212254720This shows us using both the get and set methods as can be used in scripts, of course when only setting an individual share, the above is overkill - it would be much easier to set it manually at the cli using 'set quota=3G' and then 'commit'.List MethodThe list method can be very powerful, especially in more complex scripts which iterate over large amounts of data and manipulate it if so desired. The general way you will use list is as follows:var myVar=list();Which will make "myVar" an array, containing all the objects in the relevant context (this could be a list of users, shares, projects, etc). You can then gather or manipulate data very easily.We could list all the shares and mountpoints in a given project for example:fishy10:shares another-project> script("." to run)> var shares=list();("." to run)> for (i=0; i < shares.length; i++)("." to run)> {("." to run)> run('select ' + shares[i]);("." to run)> var mountpoint=get('mountpoint');("." to run)> printf("Share %s discovered, has mountpoint %s\n",shares[i],mountpoint);("." to run)> run('done');("." to run)> }("." to run)> .Share and-another discovered, has mountpoint /export/another-project/and-anotherShare another-share discovered, has mountpoint /export/another-project/another-shareShare bob discovered, has mountpoint /export/another-projectShare more-shares-for-all discovered, has mountpoint /export/another-project/more-shares-for-allShare yep discovered, has mountpoint /export/another-project/yepWriting More Complex and Re-Usable CodeFunctionsThe best way to be able to write more complex code is to use functions to split up repeatable or reusable sections of your code. This also makes your more complex code easier to read and understand for other programmers.We write functions as follows:function functionName(variable1,variable2,...,variableN){}For example, we could have a function that takes a project name as input, and lists shares for that project (assuming we're already in the 'project' context - context is important!):function getShares(proj){ run('select ' + proj); shares=list(); printf("Project: %s\n", proj); for(j=0; j < shares.length; j++) { printf("Discovered share: %s\n",shares[i]); } run('done'); // exit selected project}Commenting your CodeLike any other language, a large part of making it readable and understandable is to comment it. You can use the same comment style as in C and Java amongst other languages.In other words, sngle line comments use://at the beginning of the comment.Multi line comments use:/*at the beginning, and:*/ at the end.For example, here we will use both:fishy10:> script("." to run)> // This is a test comment("." to run)> printf("doing some work...\n");("." to run)> /* This is a multi-line("." to run)> comment which I will span across("." to run)> three lines in total */("." to run)> printf("doing some more work...\n");("." to run)> .doing some work...doing some more work...Your comments do not have to be on their own, they can begin (particularly with single line comments this is handy) at the end of a statement, for examplevar projects=list(); // The variable projects is an array containing all projects on the system.Try and Catch StatementsYou may be used to using try and catch statements in other languages, and they can (and should) be utilised in your code to catch expected or unexpected error conditions, that you do NOT wish to stop your code from executing (if you do not catch these errors, your script will exit!):try{ // do some work}catch(err) // Catch any error that could occur{ // do something here under the error condition}For example, you may wish to only execute some code if a context can be reached. If you can't perform certain actions under certain circumstances, that may be perfectly acceptable.For example if you want to test a condition that only makes sense when looking at a SMB/NFS share, but does not make sense when you hit an iscsi or FC LUN, you don't want to stop all processing of other shares you may not have covered yet.For example we may wish to obtain quota information on all shares for all users on a share (but this makes no sense for a LUN):function getShareQuota(shar) // Get quota for each user of this share{ run('select ' + shar); printf(" SHARE: %s\n", shar); try { run('users'); printf(" %20s %11s %11s %3s\n","Username","Usage(G)","Quota(G)","Quota(%)"); printf(" %20s %11s %11s %4s\n","--------","--------","--------","----"); users=list(); for(k=0; k < users.length; k++) { user=users[k]; getUserQuota(user); } run('done'); // exit user context } catch(err) { printf(" SKIPPING %s - This is NOT a NFS or CIFs share, not looking for users\n", shar); } run('done'); // done with this share}Running Scripts Remotely over SSHAs you have likely noticed, writing and running scripts for all but the simplest jobs directly on the appliance is not going to be a lot of fun.There's a couple of choices on what you can do here:Create scripts on a remote system and run them over sshCreate scripts, wrapping them in workflow code, so they are stored on the appliance and can be triggered under certain circumstances (like a threshold being reached)We'll cover the first one here, and then cover workflows later on (as these are for the most part just scripts with some wrapper information around them).Creating a SSH Public/Private SSH Key PairLog on to your handy Solaris box (You wouldn't be using any other OS, right? :P) and use ssh-keygen to create a pair of ssh keys. I'm storing this separate to my normal key:[geoff@lightning ~] ssh-keygen -t rsa -b 1024Generating public/private rsa key pair.Enter file in which to save the key (/export/home/geoff/.ssh/id_rsa): /export/home/geoff/.ssh/nas_key_rsaEnter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /export/home/geoff/.ssh/nas_key_rsa.Your public key has been saved in /export/home/geoff/.ssh/nas_key_rsa.pub.The key fingerprint is:7f:3d:53:f0:2a:5e:8b:2d:94:2a:55:77:66:5c:9b:14 geoff@lightningInstalling the Public Key on the ApplianceOn your Solaris host, observe the public key:[geoff@lightning ~] cat .ssh/nas_key_rsa.pub ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEAvYfK3RIaAYmMHBOvyhKM41NaSmcgUMC3igPN5gUKJQvSnYmjuWG6CBr1CkF5UcDji7v19jG3qAD5lAMFn+L0CxgRr8TNaAU+hA4/tpAGkjm+dKYSyJgEdMIURweyyfUFXoerweR8AWW5xlovGKEWZTAfvJX9Zqvh8oMQ5UJLUUc= geoff@lightningNow, copy and paste everything after "ssh-rsa" and before "user@hostname" - in this case, geoff@lightning. That is, this bit:AAAAB3NzaC1yc2EAAAABIwAAAIEAvYfK3RIaAYmMHBOvyhKM41NaSmcgUMC3igPN5gUKJQvSnYmjuWG6CBr1CkF5UcDji7v19jG3qAD5lAMFn+L0CxgRr8TNaAU+hA4/tpAGkjm+dKYSyJgEdMIURweyyfUFXoerweR8AWW5xlovGKEWZTAfvJX9Zqvh8oMQ5UJLUUc=Logon to your appliance and get into the preferences -> keys area for this user (root):[geoff@lightning ~] ssh [email protected]: Last login: Mon Dec 6 17:13:28 2010 from 192.168.0.2fishy10:> configuration usersfishy10:configuration users> select rootfishy10:configuration users root> preferences fishy10:configuration users root preferences> keysOR do it all in one hit:fishy10:> configuration users select root preferences keysNow, we create a new public key that will be accepted for this user and set the type to RSA:fishy10:configuration users root preferences keys> createfishy10:configuration users root preferences key (uncommitted)> set type=RSASet the key itself using the string copied previously (between ssh-rsa and user@host), and set the key ensuring you put double quotes around it (eg. set key="<key>"):fishy10:configuration users root preferences key (uncommitted)> set key="AAAAB3NzaC1yc2EAAAABIwAAAIEAvYfK3RIaAYmMHBOvyhKM41NaSmcgUMC3igPN5gUKJQvSnYmjuWG6CBr1CkF5UcDji7v19jG3qAD5lAMFn+L0CxgRr8TNaAU+hA4/tpAGkjm+dKYSyJgEdMIURweyyfUFXoerweR8AWW5xlovGKEWZTAfvJX9Zqvh8oMQ5UJLUUc="Now set the comment for this key (do not use spaces):fishy10:configuration users root preferences key (uncommitted)> set comment="LightningRSAKey" Commit the new key:fishy10:configuration users root preferences key (uncommitted)> commitVerify the key is there:fishy10:configuration users root preferences keys> lsKeys:NAME MODIFIED TYPE COMMENT key-000 2010-10-25 20:56:42 RSA cycloneRSAKey key-001 2010-12-6 17:44:53 RSA LightningRSAKey As you can see, we now have my new key, and a previous key I have created on this appliance.Running your Script over SSH from a Remote SystemHere I have created a basic test script, and saved it as test.ecma3:[geoff@lightning ~] cat test.ecma3 script// This is a test script, By Geoff Ongley 2010.printf("Testing script remotely over ssh\n");.Now, we can run this script remotely with our keyless login:[geoff@lightning ~] ssh -i .ssh/nas_key_rsa root@fishy10 < test.ecma3Pseudo-terminal will not be allocated because stdin is not a terminal.Testing script remotely over sshPutting it Together - An Example Completed Quota Gathering ScriptSo now we have a lot of the basics to creating a script, let us do something useful, like, find out how much every user is using, on every share on the system (you will recognise some of the code from my previous examples): script/************************************** Quick and Dirty Quota Check script ** Written By Geoff Ongley ** 25 October 2010 **************************************/function getUserQuota(usr){ run('select ' + usr); var username=get('name'); var usage=get('usage'); var quota=get('quota'); var usage_g=usage / 1073741824; // convert bytes to gigabytes var quota_g=quota / 1073741824; // as above var quota_percent=0 if (quota > 0) { quota_percent=(usage / quota)*(100/1); } printf(" %20s %8.2f %8.2f %d%%\n",username,usage_g,quota_g,quota_percent); run('done'); // done with this selected user}function getShareQuota(shar){ //printf("DEBUG: selecting share %s\n", shar); run('select ' + shar); printf(" SHARE: %s\n", shar); try { run('users'); printf(" %20s %11s %11s %3s\n","Username","Usage(G)","Quota(G)","Quota(%)"); printf(" %20s %11s %11s %4s\n","--------","--------","--------","--------"); users=list(); for(k=0; k < users.length; k++) { user=users[k]; getUserQuota(user); } run('done'); // exit user context } catch(err) { printf(" SKIPPING %s - This is NOT a NFS or CIFs share, not looking for users\n", shar); } run('done'); // done with this share}function getShares(proj){ //printf("DEBUG: selecting project %s\n",proj); run('select ' + proj); shares=list(); printf("Project: %s\n", proj); for(j=0; j < shares.length; j++) { share=shares[j]; getShareQuota(share); } run('done'); // exit selected project}function getProjects(){ run('cd /'); run('shares'); projects=list(); for (i=0; i < projects.length; i++) { var project=projects[i]; getShares(project); } run('done'); // exit context for all projects}getProjects();.Which can be run as follows, and will print information like this:[geoff@lightning ~/FISHWORKS_SCRIPTS] ssh -i ~/.ssh/nas_key_rsa root@fishy10 < get_quota_utilisation.ecma3Pseudo-terminal will not be allocated because stdin is not a terminal.Project: another-project SHARE: and-another Username Usage(G) Quota(G) Quota(%) -------- -------- -------- -------- nobody 0.00 0.00 0% geoffro 0.05 0.00 0% Billy 0.10 0.00 0% root 0.00 0.00 0% testing-user 0.05 0.00 0% SHARE: another-share Username Usage(G) Quota(G) Quota(%) -------- -------- -------- -------- root 0.00 0.00 0% nobody 0.00 0.00 0% geoffro 0.05 0.49 9% testing-user 0.05 0.02 249% Billy 0.10 0.29 33% SHARE: bob Username Usage(G) Quota(G) Quota(%) -------- -------- -------- -------- nobody 0.00 0.00 0% root 0.00 0.00 0% SHARE: more-shares-for-all Username Usage(G) Quota(G) Quota(%) -------- -------- -------- -------- Billy 0.10 0.00 0% testing-user 0.05 0.00 0% nobody 0.00 0.00 0% root 0.00 0.00 0% geoffro 0.05 0.00 0% SHARE: yep Username Usage(G) Quota(G) Quota(%) -------- -------- -------- -------- root 0.00 0.00 0% nobody 0.00 0.00 0% Billy 0.10 0.01 999% testing-user 0.05 0.49 9% geoffro 0.05 0.00 0%Project: default SHARE: Test-LUN SKIPPING Test-LUN - This is NOT a NFS or CIFs share, not looking for users SHARE: test-geoff Username Usage(G) Quota(G) Quota(%) -------- -------- -------- -------- geoffro 0.05 0.00 0% root 3.18 10.00 31% uucp 0.00 0.00 0% nobody 0.59 0.49 119%^CKilled by signal 2.Creating a WorkflowWorkflows are scripts that we store on the appliance, and can have the script execute either on request (even from the BUI), or on an event such as a threshold being met.Workflow BasicsA workflow allows you to create a simple process that can be executed either via the BUI interface interactively, or by an alert being raised (for some threshold being reached, for example).The basics parameters you will have to set for your "workflow object" (notice you're creating a variable, that embodies ECMAScript) are as follows (parameters is optional):name: A name for this workflowdescription: A Description for the workflowparameters: A set of input parameters (useful when you need user input to execute the workflow)execute: The code, the script itself to execute, which will be function (parameters)With parameters, you can specify things like this (slightly modified sample taken from the System Administration Guide): ...parameters: variableParam1: { label: 'Name of Share', type: 'String' }, variableParam2 { label: 'Share Size', type: 'size' },execute: ....}; Note the commas separating the sections of name, parameters, execute, and so on. This is important!Also - there is plenty of properties you can set on the parameters for your workflow, these are described in the Sun ZFS Storage System Administration Guide.Creating a Basic Workflow from a Basic ScriptTo make a basic script into a basic workflow, you need to wrap the following around your script to create a 'workflow' object:var workflow = {name: 'Get User Quotas',description: 'Displays Quota Utilisation for each user on each share',execute: function() {// (basic script goes here, minus the "script" at the beginning, and "." at the end)}};However, it appears (at least in my experience to date) that the workflow object may only be happy with one function in the execute parameter - either that or I'm doing something wrong. As far as I can tell, after execute: you should only have a basic one function context like so:execute: function(){}To deal with this, and to give an example similar to our script earlier, I have created another simple quota check, to show the same basic functionality, but in a workflow format:var workflow = {name: 'Get User Quotas',description: 'Displays Quota Utilisation for each user on each share',execute: function () { run('cd /'); run('shares'); projects=list(); for (i=0; i < projects.length; i++) { run('select ' + projects[i]); shares=list('filesystem'); printf("Project: %s\n", projects[i]); for(j=0; j < shares.length; j++) { run('select ' +shares[j]); try { run('users'); printf(" SHARE: %s\n", shares[j]); printf(" %20s %11s %11s %3s\n","Username","Usage(G)","Quota(G)","Quota(%)"); printf(" %20s %11s %11s %4s\n","--------","--------","--------","-------"); users=list(); for(k=0; k < users.length; k++) { run('select ' + users[k]); username=get('name'); usage=get('usage'); quota=get('quota'); usage_g=usage / 1073741824; // convert bytes to gigabytes quota_g=quota / 1073741824; // as above quota_percent=0 if (quota > 0) { quota_percent=(usage / quota)*(100/1); } printf(" %20s %8.2f %8.2f %d%%\n",username,usage_g,quota_g,quota_percent); run('done'); } run('done'); // exit user context } catch(err) { // printf(" %s is a LUN, Not looking for users\n", shares[j]); } run('done'); // exit selected share context } run('done'); // exit project context } }};SummaryThe Sun ZFS Storage 7000 Appliance offers lots of different and interesting features to Sun/Oracle customers, including the world renowned Analytics. Hopefully the above will help you to think of new creative things you could be doing by taking advantage of one of the other neat features, the internal scripting engine!Some references are below to help you continue learning more, I'll update this post as I do the same! Enjoy...More information on ECMAScript 3A complete reference to ECMAScript 3 which will help you learn more of the details you may be interested in, can be found here:http://www.ecma-international.org/publications/files/ECMA-ST-ARCH/ECMA-262,%203rd%20edition,%20December%201999.pdfMore Information on Administering the Sun ZFS Storage 7000The Sun ZFS Storage 7000 System Administration guide can be a useful reference point, and can be found here:http://wikis.sun.com/download/attachments/186238602/2010_Q3_2_ADMIN.pdf

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socket operation on nonsocket or bad file descriptor

- by Magn3s1um

I'm writing a pthread server which takes requests from clients and sends them back a bunch of .ppm files. Everything seems to go well, but sometimes when I have just 1 client connected, when trying to read from the file descriptor (for the file), it says Bad file Descriptor. This doesn't make sense, since my int fd isn't -1, and the file most certainly exists. Other times, I get this "Socket operation on nonsocket" error. This is weird because other times, it doesn't give me this error and everything works fine. When trying to connect multiple clients, for some reason, it will only send correctly to one, and then the other client gets the bad file descriptor or "nonsocket" error, even though both threads are processing the same messages and do the same routines. Anyone have an idea why? Here's the code that is giving me that error: while(mqueue.head != mqueue.tail && count < dis_m){ printf("Sending to client %s: %s\n", pointer->id, pointer->message); int fd; fd = open(pointer->message, O_RDONLY); char buf[58368]; int bytesRead; printf("This is fd %d\n", fd); bytesRead=read(fd,buf,58368); send(pointer->socket,buf,bytesRead,0); perror("Error:\n"); fflush(stdout); close(fd); mqueue.mcount--; mqueue.head = mqueue.head->next; free(pointer->message); free(pointer); pointer = mqueue.head; count++; } printf("Sending %s\n", pointer->message); int fd; fd = open(pointer->message, O_RDONLY); printf("This is fd %d\n", fd); printf("I am hhere2\n"); char buf[58368]; int bytesRead; bytesRead=read(fd,buf,58368); send(pointer->socket,buf,bytesRead,0); perror("Error:\n"); close(fd); mqueue.mcount--; if(mqueue.head != mqueue.tail){ mqueue.head = mqueue.head->next; } else{ mqueue.head->next = malloc(sizeof(struct message)); mqueue.head = mqueue.head->next; mqueue.head->next = malloc(sizeof(struct message)); mqueue.tail = mqueue.head->next; mqueue.head->message = NULL; } free(pointer->message); free(pointer); pthread_mutex_unlock(&numm); pthread_mutex_unlock(&circ); pthread_mutex_unlock(&slots); The messages for both threads are the same, being of the form ./path/imageXX.ppm where XX is the number that should go to the client. The file size of each image is 58368 bytes. Sometimes, this code hangs on the read, and stops execution. I don't know this would be either, because the file descriptor comes back as valid. Thanks in advanced. Edit: Here's some sample output: Sending to client a: ./support/images/sw90.ppm This is fd 4 Error: : Socket operation on non-socket Sending to client a: ./support/images/sw91.ppm This is fd 4 Error: : Socket operation on non-socket Sending ./support/images/sw92.ppm This is fd 4 I am hhere2 Error: : Socket operation on non-socket My dispatcher has defeated evil Sample with 2 clients (client b was serviced first) Sending to client b: ./support/images/sw87.ppm This is fd 6 Error: : Success Sending to client b: ./support/images/sw88.ppm This is fd 6 Error: : Success Sending to client b: ./support/images/sw89.ppm This is fd 6 Error: : Success This is fd 6 Error: : Bad file descriptor Sending to client a: ./support/images/sw85.ppm This is fd 6 Error: As you can see, who ever is serviced first in this instance can open the files, but not the 2nd person. Edit2: Full code. Sorry, its pretty long and terribly formatted. #include <netinet/in.h> #include <netinet/in.h> #include <netdb.h> #include <arpa/inet.h> #include <sys/types.h> #include <sys/socket.h> #include <errno.h> #include <stdio.h> #include <unistd.h> #include <pthread.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include "ring.h" /* Version 1 Here is what is implemented so far: The threads are created from the arguments specified (number of threads that is) The server will lock and update variables based on how many clients are in the system and such. The socket that is opened when a new client connects, must be passed to the threads. To do this, we need some sort of global array. I did this by specifying an int client and main_pool_busy, and two pointers poolsockets and nonpoolsockets. My thinking on this was that when a new client enters the system, the server thread increments the variable client. When a thread is finished with this client (after it sends it the data), the thread will decrement client and close the socket. HTTP servers act this way sometimes (they terminate the socket as soon as one transmission is sent). *Note down at bottom After the server portion increments the client counter, we must open up a new socket (denoted by new_sd) and get this value to the appropriate thread. To do this, I created global array poolsockets, which will hold all the socket descriptors for our pooled threads. The server portion gets the new socket descriptor, and places the value in the first spot of the array that has a 0. We only place a value in this array IF: 1. The variable main_pool_busy < worknum (If we have more clients in the system than in our pool, it doesn't mean we should always create a new thread. At the end of this, the server signals on the condition variable clientin that a new client has arrived. In our pooled thread, we then must walk this array and check the array until we hit our first non-zero value. This is the socket we will give to that thread. The thread then changes the array to have a zero here. What if our all threads in our pool our busy? If this is the case, then we will know it because our threads in this pool will increment main_pool_busy by one when they are working on a request and decrement it when they are done. If main_pool_busy >= worknum, then we must dynamically create a new thread. Then, we must realloc the size of our nonpoolsockets array by 1 int. We then add the new socket descriptor to our pool. Here's what we need to figure out: NOTE* Each worker should generate 100 messages which specify the worker thread ID, client socket descriptor and a copy of the client message. Additionally, each message should include a message number, starting from 0 and incrementing for each subsequent message sent to the same client. I don't know how to keep track of how many messages were to the same client. Maybe we shouldn't close the socket descriptor, but rather keep an array of structs for each socket that includes how many messages they have been sent. Then, the server adds the struct, the threads remove it, then the threads add it back once they've serviced one request (unless the count is 100). ------------------------------------------------------------- CHANGES Version 1 ---------- NONE: this is the first version. */ #define MAXSLOTS 30 #define dis_m 15 //problems with dis_m ==1 //Function prototypes void inc_clients(); void init_mutex_stuff(pthread_t*, pthread_t*); void *threadpool(void *); void server(int); void add_to_socket_pool(int); void inc_busy(); void dec_busy(); void *dispatcher(); void create_message(long, int, int, char *, char *); void init_ring(); void add_to_ring(char *, char *, int, int, int); int socket_from_string(char *); void add_to_head(char *); void add_to_tail(char *); struct message * reorder(struct message *, struct message *, int); int get_threadid(char *); void delete_socket_messages(int); struct message * merge(struct message *, struct message *, int); int get_request(char *, char *, char*); ///////////////////// //Global mutexes and condition variables pthread_mutex_t startservice; pthread_mutex_t numclients; pthread_mutex_t pool_sockets; pthread_mutex_t nonpool_sockets; pthread_mutex_t m_pool_busy; pthread_mutex_t slots; pthread_mutex_t numm; pthread_mutex_t circ; pthread_cond_t clientin; pthread_cond_t m; /////////////////////////////////////// //Global variables int clients; int main_pool_busy; int * poolsockets, nonpoolsockets; int worknum; struct ring mqueue; /////////////////////////////////////// int main(int argc, char ** argv){ //error handling if not enough arguments to program if(argc != 3){ printf("Not enough arguments to server: ./server portnum NumThreadsinPool\n"); _exit(-1); } //Convert arguments from strings to integer values int port = atoi(argv[1]); worknum = atoi(argv[2]); //Start server portion server(port); } /////////////////////////////////////////////////////////////////////////////////////////////// //The listen server thread///////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////////////////////// void server(int port){ int sd, new_sd; struct sockaddr_in name, cli_name; int sock_opt_val = 1; int cli_len; pthread_t threads[worknum]; //create our pthread id array pthread_t dis[1]; //create our dispatcher array (necessary to create thread) init_mutex_stuff(threads, dis); //initialize mutexes and stuff //Server setup /////////////////////////////////////////////////////// if ((sd = socket (AF_INET, SOCK_STREAM, 0)) < 0) { perror("(servConn): socket() error"); _exit (-1); } if (setsockopt (sd, SOL_SOCKET, SO_REUSEADDR, (char *) &sock_opt_val, sizeof(sock_opt_val)) < 0) { perror ("(servConn): Failed to set SO_REUSEADDR on INET socket"); _exit (-1); } name.sin_family = AF_INET; name.sin_port = htons (port); name.sin_addr.s_addr = htonl(INADDR_ANY); if (bind (sd, (struct sockaddr *)&name, sizeof(name)) < 0) { perror ("(servConn): bind() error"); _exit (-1); } listen (sd, 5); //End of server Setup ////////////////////////////////////////////////// for (;;) { cli_len = sizeof (cli_name); new_sd = accept (sd, (struct sockaddr *) &cli_name, &cli_len); printf ("Assigning new socket descriptor: %d\n", new_sd); inc_clients(); //New client has come in, increment clients add_to_socket_pool(new_sd); //Add client to the pool of sockets if (new_sd < 0) { perror ("(servConn): accept() error"); _exit (-1); } } pthread_exit(NULL); //Quit } //Adds the new socket to the array designated for pthreads in the pool void add_to_socket_pool(int socket){ pthread_mutex_lock(&m_pool_busy); //Lock so that we can check main_pool_busy int i; //If not all our main pool is busy, then allocate to one of them if(main_pool_busy < worknum){ pthread_mutex_unlock(&m_pool_busy); //unlock busy, we no longer need to hold it pthread_mutex_lock(&pool_sockets); //Lock the socket pool array so that we can edit it without worry for(i = 0; i < worknum; i++){ //Find a poolsocket that is -1; then we should put the real socket there. This value will be changed back to -1 when the thread grabs the sockfd if(poolsockets[i] == -1){ poolsockets[i] = socket; pthread_mutex_unlock(&pool_sockets); //unlock our pool array, we don't need it anymore inc_busy(); //Incrememnt busy (locks the mutex itself) pthread_cond_signal(&clientin); //Signal first thread waiting on a client that a client needs to be serviced break; } } } else{ //Dynamic thread creation goes here pthread_mutex_unlock(&m_pool_busy); } } //Increments the client number. If client number goes over worknum, we must dynamically create new pthreads void inc_clients(){ pthread_mutex_lock(&numclients); clients++; pthread_mutex_unlock(&numclients); } //Increments busy void inc_busy(){ pthread_mutex_lock(&m_pool_busy); main_pool_busy++; pthread_mutex_unlock(&m_pool_busy); } //Initialize all of our mutexes at the beginning and create our pthreads void init_mutex_stuff(pthread_t * threads, pthread_t * dis){ pthread_mutex_init(&startservice, NULL); pthread_mutex_init(&numclients, NULL); pthread_mutex_init(&pool_sockets, NULL); pthread_mutex_init(&nonpool_sockets, NULL); pthread_mutex_init(&m_pool_busy, NULL); pthread_mutex_init(&circ, NULL); pthread_cond_init (&clientin, NULL); main_pool_busy = 0; poolsockets = malloc(sizeof(int)*worknum); int threadreturn; //error checking variables long i = 0; //Loop and create pthreads for(i; i < worknum; i++){ threadreturn = pthread_create(&threads[i], NULL, threadpool, (void *) i); poolsockets[i] = -1; if(threadreturn){ perror("Thread pool created unsuccessfully"); _exit(-1); } } pthread_create(&dis[0], NULL, dispatcher, NULL); } ////////////////////////////////////////////////////////////////////////////////////////// /////////Main pool routines ///////////////////////////////////////////////////////////////////////////////////////// void dec_busy(){ pthread_mutex_lock(&m_pool_busy); main_pool_busy--; pthread_mutex_unlock(&m_pool_busy); } void dec_clients(){ pthread_mutex_lock(&numclients); clients--; pthread_mutex_unlock(&numclients); } //This is what our threadpool pthreads will be running. void *threadpool(void * threadid){ long id = (long) threadid; //Id of this thread int i; int socket; int counter = 0; //Try and gain access to the next client that comes in and wait until server signals that a client as arrived while(1){ pthread_mutex_lock(&startservice); //lock start service (required for cond wait) pthread_cond_wait(&clientin, &startservice); //wait for signal from server that client exists pthread_mutex_unlock(&startservice); //unlock mutex. pthread_mutex_lock(&pool_sockets); //Lock the pool socket so we can get the socket fd unhindered/interrupted for(i = 0; i < worknum; i++){ if(poolsockets[i] != -1){ socket = poolsockets[i]; poolsockets[i] = -1; pthread_mutex_unlock(&pool_sockets); } } printf("Thread #%d is past getting the socket\n", id); int incoming = 1; while(counter < 100 && incoming != 0){ char buffer[512]; bzero(buffer,512); int startcounter = 0; incoming = read(socket, buffer, 512); if(buffer[0] != 0){ //client ID:priority:request:arguments char id[100]; long prior; char request[100]; char arg1[100]; char message[100]; char arg2[100]; char * point; point = strtok(buffer, ":"); strcpy(id, point); point = strtok(NULL, ":"); prior = atoi(point); point = strtok(NULL, ":"); strcpy(request, point); point = strtok(NULL, ":"); strcpy(arg1, point); point = strtok(NULL, ":"); if(point != NULL){ strcpy(arg2, point); } int fd; if(strcmp(request, "start_movie") == 0){ int count = 1; while(count <= 100){ char temp[10]; snprintf(temp, 50, "%d\0", count); strcpy(message, "./support/images/"); strcat(message, arg1); strcat(message, temp); strcat(message, ".ppm"); printf("This is message %s to %s\n", message, id); count++; add_to_ring(message, id, prior, counter, socket); //Adds our created message to the ring counter++; } printf("I'm out of the loop\n"); } else if(strcmp(request, "seek_movie") == 0){ int count = atoi(arg2); while(count <= 100){ char temp[10]; snprintf(temp, 10, "%d\0", count); strcpy(message, "./support/images/"); strcat(message, arg1); strcat(message, temp); strcat(message, ".ppm"); printf("This is message %s\n", message); count++; } } //create_message(id, socket, counter, buffer, message); //Creates our message from the input from the client. Stores it in buffer } else{ delete_socket_messages(socket); break; } } counter = 0; close(socket);//Zero out counter again } dec_clients(); //client serviced, decrement clients dec_busy(); //thread finished, decrement busy } //Creates a message void create_message(long threadid, int socket, int counter, char * buffer, char * message){ snprintf(message, strlen(buffer)+15, "%d:%d:%d:%s", threadid, socket, counter, buffer); } //Gets the socket from the message string (maybe I should just pass in the socket to another method) int socket_from_string(char * message){ char * substr1 = strstr(message, ":"); char * substr2 = substr1; substr2++; int occurance = strcspn(substr2, ":"); char sock[10]; strncpy(sock, substr2, occurance); return atoi(sock); } //Adds message to our ring buffer's head void add_to_head(char * message){ printf("Adding to head of ring\n"); mqueue.head->message = malloc(strlen(message)+1); //Allocate space for message strcpy(mqueue.head->message, message); //copy bytes into allocated space } //Adds our message to our ring buffer's tail void add_to_tail(char * message){ printf("Adding to tail of ring\n"); mqueue.tail->message = malloc(strlen(message)+1); //allocate space for message strcpy(mqueue.tail->message, message); //copy bytes into allocated space mqueue.tail->next = malloc(sizeof(struct message)); //allocate space for the next message struct } //Adds a message to our ring void add_to_ring(char * message, char * id, int prior, int mnum, int socket){ //printf("This is message %s:" , message); pthread_mutex_lock(&circ); //Lock the ring buffer pthread_mutex_lock(&numm); //Lock the message count (will need this to make sure we can't fill the buffer over the max slots) if(mqueue.head->message == NULL){ add_to_head(message); //Adds it to head mqueue.head->socket = socket; //Set message socket mqueue.head->priority = prior; //Set its priority (thread id) mqueue.head->mnum = mnum; //Set its message number (used for sorting) mqueue.head->id = malloc(sizeof(id)); strcpy(mqueue.head->id, id); } else if(mqueue.tail->message == NULL){ //This is the problem for dis_m 1 I'm pretty sure add_to_tail(message); mqueue.tail->socket = socket; mqueue.tail->priority = prior; mqueue.tail->mnum = mnum; mqueue.tail->id = malloc(sizeof(id)); strcpy(mqueue.tail->id, id); } else{ mqueue.tail->next = malloc(sizeof(struct message)); mqueue.tail = mqueue.tail->next; add_to_tail(message); mqueue.tail->socket = socket; mqueue.tail->priority = prior; mqueue.tail->mnum = mnum; mqueue.tail->id = malloc(sizeof(id)); strcpy(mqueue.tail->id, id); } mqueue.mcount++; pthread_mutex_unlock(&circ); if(mqueue.mcount >= dis_m){ pthread_mutex_unlock(&numm); pthread_cond_signal(&m); } else{ pthread_mutex_unlock(&numm); } printf("out of add to ring\n"); fflush(stdout); } ////////////////////////////////// //Dispatcher routines ///////////////////////////////// void *dispatcher(){ init_ring(); while(1){ pthread_mutex_lock(&slots); pthread_cond_wait(&m, &slots); pthread_mutex_lock(&numm); pthread_mutex_lock(&circ); printf("Dispatcher to the rescue!\n"); mqueue.head = reorder(mqueue.head, mqueue.tail, mqueue.mcount); //printf("This is the head %s\n", mqueue.head->message); //printf("This is the tail %s\n", mqueue.head->message); fflush(stdout); struct message * pointer = mqueue.head; int count = 0; while(mqueue.head != mqueue.tail && count < dis_m){ printf("Sending to client %s: %s\n", pointer->id, pointer->message); int fd; fd = open(pointer->message, O_RDONLY); char buf[58368]; int bytesRead; printf("This is fd %d\n", fd); bytesRead=read(fd,buf,58368); send(pointer->socket,buf,bytesRead,0); perror("Error:\n"); fflush(stdout); close(fd); mqueue.mcount--; mqueue.head = mqueue.head->next; free(pointer->message); free(pointer); pointer = mqueue.head; count++; } printf("Sending %s\n", pointer->message); int fd; fd = open(pointer->message, O_RDONLY); printf("This is fd %d\n", fd); printf("I am hhere2\n"); char buf[58368]; int bytesRead; bytesRead=read(fd,buf,58368); send(pointer->socket,buf,bytesRead,0); perror("Error:\n"); close(fd); mqueue.mcount--; if(mqueue.head != mqueue.tail){ mqueue.head = mqueue.head->next; } else{ mqueue.head->next = malloc(sizeof(struct message)); mqueue.head = mqueue.head->next; mqueue.head->next = malloc(sizeof(struct message)); mqueue.tail = mqueue.head->next; mqueue.head->message = NULL; } free(pointer->message); free(pointer); pthread_mutex_unlock(&numm); pthread_mutex_unlock(&circ); pthread_mutex_unlock(&slots); printf("My dispatcher has defeated evil\n"); } } void init_ring(){ mqueue.head = malloc(sizeof(struct message)); mqueue.head->next = malloc(sizeof(struct message)); mqueue.tail = mqueue.head->next; mqueue.mcount = 0; } struct message * reorder(struct message * begin, struct message * end, int num){ //printf("I am reordering for size %d\n", num); fflush(stdout); int i; if(num == 1){ //printf("Begin: %s\n", begin->message); begin->next = NULL; return begin; } else{ struct message * left = begin; struct message * right; int middle = num/2; for(i = 1; i < middle; i++){ left = left->next; } right = left -> next; left -> next = NULL; //printf("Begin: %s\nLeft: %s\nright: %s\nend:%s\n", begin->message, left->message, right->message, end->message); left = reorder(begin, left, middle); if(num%2 != 0){ right = reorder(right, end, middle+1); } else{ right = reorder(right, end, middle); } return merge(left, right, num); } } struct message * merge(struct message * left, struct message * right, int num){ //printf("I am merginging! left: %s %d, right: %s %dnum: %d\n", left->message,left->priority, right->message, right->priority, num); struct message * start, * point; int lenL= 0; int lenR = 0; int flagL = 0; int flagR = 0; int count = 0; int middle1 = num/2; int middle2; if(num%2 != 0){ middle2 = middle1+1; } else{ middle2 = middle1; } while(lenL < middle1 && lenR < middle2){ count++; //printf("In here for count %d\n", count); if(lenL == 0 && lenR == 0){ if(left->priority < right->priority){ start = left; //Set the start point point = left; //set our enum; left = left->next; //move the left pointer point->next = NULL; //Set the next node to NULL lenL++; } else if(left->priority > right->priority){ start = right; point = right; right = right->next; point->next = NULL; lenR++; } else{ if(left->mnum < right->mnum){ ////printf("This is where we are\n"); start = left; //Set the start point point = left; //set our enum; left = left->next; //move the left pointer point->next = NULL; //Set the next node to NULL lenL++; } else{ start = right; point = right; right = right->next; point->next = NULL; lenR++; } } } else{ if(left->priority < right->priority){ point->next = left; left = left->next; //move the left pointer point = point->next; point->next = NULL; //Set the next node to NULL lenL++; } else if(left->priority > right->priority){ point->next = right; right = right->next; point = point->next; point->next = NULL; lenR++; } else{ if(left->mnum < right->mnum){ point->next = left; //set our enum; left = left->next; point = point->next;//move the left pointer point->next = NULL; //Set the next node to NULL lenL++; } else{ point->next = right; right = right->next; point = point->next; point->next = NULL; lenR++; } } } if(lenL == middle1){ flagL = 1; break; } if(lenR == middle2){ flagR = 1; break; } } if(flagL == 1){ point->next = right; point = point->next; for(lenR; lenR< middle2-1; lenR++){ point = point->next; } point->next = NULL; mqueue.tail = point; } else{ point->next = left; point = point->next; for(lenL; lenL< middle1-1; lenL++){ point = point->next; } point->next = NULL; mqueue.tail = point; } //printf("This is the start %s\n", start->message); //printf("This is mqueue.tail %s\n", mqueue.tail->message); return start; } void delete_socket_messages(int a){ }

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