1c6db04a5SJed Brown #include <petscsys.h> 2e5c89e4eSSatish Balay #if defined(PETSC_HAVE_SYS_TIME_H) 3e5c89e4eSSatish Balay #include <sys/time.h> 4e5c89e4eSSatish Balay #endif 5e5c89e4eSSatish Balay #include <time.h> 6e5c89e4eSSatish Balay #if defined(PETSC_NEEDS_GETTIMEOFDAY_PROTO) 78cc058d9SJed Brown PETSC_EXTERN int gettimeofday(struct timeval *, struct timezone *); 8e5c89e4eSSatish Balay #endif 9e5c89e4eSSatish Balay 10e5c89e4eSSatish Balay /*@C 11e5c89e4eSSatish Balay PetscGetDate - Gets the current date. 12e5c89e4eSSatish Balay 1320f4b53cSBarry Smith Not Collective 14e5c89e4eSSatish Balay 15e5c89e4eSSatish Balay Input Parameter: 16e5c89e4eSSatish Balay . len - length of string to hold date 17e5c89e4eSSatish Balay 18e5c89e4eSSatish Balay Output Parameter: 19e5c89e4eSSatish Balay . date - the date 20e5c89e4eSSatish Balay 21e5c89e4eSSatish Balay Level: beginner 22e5c89e4eSSatish Balay 23811af0c4SBarry Smith Note: 24811af0c4SBarry Smith This function makes a system call and thus SHOULD NOT be called from an error handler. 25811af0c4SBarry Smith 26aec76313SJacob Faibussowitsch Developer Notes: 27811af0c4SBarry Smith This function is called once during `PetscInitialize()`. 28811af0c4SBarry Smith It stashes the timestamp, and uses it when needed. This is so that 29811af0c4SBarry Smith error handlers may report the date without generating possible 30811af0c4SBarry Smith additional system errors during the call to get the date. 31e5c89e4eSSatish Balay 3210450e9eSJacob Faibussowitsch .seealso: `PetscGetHostName()` 33e5c89e4eSSatish Balay @*/ 34d71ae5a4SJacob Faibussowitsch PetscErrorCode PetscGetDate(char date[], size_t len) 35d71ae5a4SJacob Faibussowitsch { 360298fd71SBarry Smith char *str = NULL; 37e5c89e4eSSatish Balay #if defined(PETSC_HAVE_TIME) 38e5c89e4eSSatish Balay time_t aclock; 39e5c89e4eSSatish Balay #else 40e5c89e4eSSatish Balay struct timeval tp; 41e5c89e4eSSatish Balay #endif 42e5c89e4eSSatish Balay 43e5c89e4eSSatish Balay PetscFunctionBegin; 44e5c89e4eSSatish Balay #if defined(PETSC_HAVE_TIME) 45e5c89e4eSSatish Balay time(&aclock); 469566063dSJacob Faibussowitsch PetscCall(PetscStrncpy(date, asctime(localtime(&aclock)), len)); 47e5c89e4eSSatish Balay #else 48*c8025a54SPierre Jolivet gettimeofday(&tp, NULL); 499566063dSJacob Faibussowitsch PetscCall(PetscStrncpy(date, asctime(localtime((time_t *)&tp.tv_sec)), len)); 50e5c89e4eSSatish Balay #endif 51e5c89e4eSSatish Balay /* now strip out the new-line chars at the end of the string */ 529566063dSJacob Faibussowitsch PetscCall(PetscStrstr(date, "\n", &str)); 53e5c89e4eSSatish Balay if (str) str[0] = 0; 543ba16761SJacob Faibussowitsch PetscFunctionReturn(PETSC_SUCCESS); 55e5c89e4eSSatish Balay } 56