mbed port of tinydtls
dtls_time.c
- Committer:
- ashleymills
- Date:
- 2013-10-11
- Revision:
- 1:bc8a649bad13
- Parent:
- 0:04990d454f45
File content as of revision 1:bc8a649bad13:
/* dtls -- a very basic DTLS implementation * * Copyright (C) 2011--2013 Olaf Bergmann <bergmann@tzi.org> * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, copy, * modify, merge, publish, distribute, sublicense, and/or sell copies * of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ /** * @file dtls_time.c * @brief Clock Handling */ #include "dtls_time.h" #include "bsd_socket.h" #ifdef MBED /** * gettimeofday() not in mbed */ void gettimeofday(struct timeval* t, void* timezone) { t->tv_sec = time(NULL); t->tv_usec = 0; /* 1sec precision only */ } #endif #ifdef WITH_CONTIKI clock_time_t dtls_clock_offset; void dtls_clock_init(void) { clock_init(); dtls_clock_offset = clock_time(); } void dtls_ticks(dtls_tick_t *t) { *t = clock_time(); } #else /* WITH_CONTIKI */ time_t dtls_clock_offset; void dtls_clock_init(void) { #ifdef HAVE_TIME_H dtls_clock_offset = time(NULL); #else # ifdef __GNUC__ /* Issue a warning when using gcc. Other prepropressors do * not seem to have a similar feature. */ # warning "cannot initialize clock" # endif dtls_clock_offset = 0; #endif } void dtls_ticks(dtls_tick_t *t) { #ifdef HAVE_SYS_TIME_H struct timeval tv; gettimeofday(&tv, NULL); *t = (tv.tv_sec - dtls_clock_offset) * DTLS_TICKS_PER_SECOND + (tv.tv_usec * DTLS_TICKS_PER_SECOND / 1000000); #else #error "clock not implemented" #endif } #endif /* WITH_CONTIKI */