1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved. 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a copy 4 * of this software and associated documentation files (the "Software"), to 5 * deal in the Software without restriction, including without limitation the 6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 7 * sell copies of the Software, and to permit persons to whom the Software is 8 * furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 19 * IN THE SOFTWARE. 20 */ 21 22 #include "uv.h" 23 #include "task.h" 24 25 #ifndef MILLISEC 26 # define MILLISEC 1000 27 #endif 28 29 #ifndef NANOSEC 30 # define NANOSEC ((uint64_t) 1e9) 31 #endif 32 33 34 TEST_IMPL(hrtime) { 35 uint64_t a, b, diff; 36 int i = 75; 37 while (i > 0) { 38 a = uv_hrtime(); 39 uv_sleep(45); 40 b = uv_hrtime(); 41 42 diff = b - a; 43 44 /* The windows Sleep() function has only a resolution of 10-20 ms. Check 45 * that the difference between the two hrtime values has a reasonable 46 * lower bound. 47 */ 48 ASSERT(diff > (uint64_t) 25 * NANOSEC / MILLISEC); 49 --i; 50 } 51 return 0; 52 } 53