| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. |
| * |
| * This software is licensed as described in the file COPYING, which |
| * you should have received as part of this distribution. The terms |
| * are also available at https://curl.se/docs/copyright.html. |
| * |
| * You may opt to use, copy, modify, merge, publish, distribute and/or sell |
| * copies of the Software, and permit persons to whom the Software is |
| * furnished to do so, under the terms of the COPYING file. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| * SPDX-License-Identifier: curl |
| * |
| ***************************************************************************/ |
| |
| #include "timediff.h" |
| |
| #include <limits.h> |
| |
| /* |
| * Converts number of milliseconds into a timeval structure. |
| * |
| * Return values: |
| * NULL IF tv is NULL or ms < 0 (eg. no timeout -> blocking select) |
| * tv with 0 in both fields IF ms == 0 (eg. 0ms timeout -> polling select) |
| * tv with converted fields IF ms > 0 (eg. >0ms timeout -> waiting select) |
| */ |
| struct timeval *curlx_mstotv(struct timeval *tv, timediff_t ms) |
| { |
| if(!tv) |
| return NULL; |
| |
| if(ms < 0) |
| return NULL; |
| |
| if(ms > 0) { |
| timediff_t tv_sec = ms / 1000; |
| timediff_t tv_usec = (ms % 1000) * 1000; /* max=999999 */ |
| #ifdef HAVE_SUSECONDS_T |
| #if TIMEDIFF_T_MAX > TIME_T_MAX |
| /* tv_sec overflow check in case time_t is signed */ |
| if(tv_sec > TIME_T_MAX) |
| tv_sec = TIME_T_MAX; |
| #endif |
| tv->tv_sec = (time_t)tv_sec; |
| tv->tv_usec = (suseconds_t)tv_usec; |
| #elif defined(_WIN32) /* maybe also others in the future */ |
| #if TIMEDIFF_T_MAX > LONG_MAX |
| /* tv_sec overflow check on Windows there we know it is long */ |
| if(tv_sec > LONG_MAX) |
| tv_sec = LONG_MAX; |
| #endif |
| tv->tv_sec = (long)tv_sec; |
| tv->tv_usec = (long)tv_usec; |
| #else |
| #if TIMEDIFF_T_MAX > INT_MAX |
| /* tv_sec overflow check in case time_t is signed */ |
| if(tv_sec > INT_MAX) |
| tv_sec = INT_MAX; |
| #endif |
| tv->tv_sec = (int)tv_sec; |
| tv->tv_usec = (int)tv_usec; |
| #endif |
| } |
| else { |
| tv->tv_sec = 0; |
| tv->tv_usec = 0; |
| } |
| |
| return tv; |
| } |
| |
| /* |
| * Converts a timeval structure into number of milliseconds. |
| */ |
| timediff_t curlx_tvtoms(struct timeval *tv) |
| { |
| return (tv->tv_sec*1000) + (timediff_t)(((double)tv->tv_usec)/1000.0); |
| } |