| /* |
| * |
| * Copyright 2015-2016, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| /* Win32 code for gpr time support. */ |
| |
| #include <grpc/support/port_platform.h> |
| |
| #ifdef GPR_WIN32 |
| |
| #include <grpc/support/log.h> |
| #include <grpc/support/time.h> |
| #include <src/core/support/time_precise.h> |
| #include <sys/timeb.h> |
| #include <process.h> |
| #include <limits.h> |
| |
| #include "src/core/support/block_annotate.h" |
| |
| static LARGE_INTEGER g_start_time; |
| static double g_time_scale; |
| |
| void gpr_time_init(void) { |
| LARGE_INTEGER frequency; |
| QueryPerformanceFrequency(&frequency); |
| QueryPerformanceCounter(&g_start_time); |
| g_time_scale = 1.0 / (double)frequency.QuadPart; |
| } |
| |
| gpr_timespec gpr_now(gpr_clock_type clock) { |
| gpr_timespec now_tv; |
| LONGLONG diff; |
| struct _timeb now_tb; |
| LARGE_INTEGER timestamp; |
| double now_dbl; |
| now_tv.clock_type = clock; |
| switch (clock) { |
| case GPR_CLOCK_REALTIME: |
| _ftime_s(&now_tb); |
| now_tv.tv_sec = (int64_t)now_tb.time; |
| now_tv.tv_nsec = now_tb.millitm * 1000000; |
| break; |
| case GPR_CLOCK_MONOTONIC: |
| case GPR_CLOCK_PRECISE: |
| QueryPerformanceCounter(×tamp); |
| diff = timestamp.QuadPart - g_start_time.QuadPart; |
| now_dbl = (double)diff * g_time_scale; |
| now_tv.tv_sec = (int64_t)now_dbl; |
| now_tv.tv_nsec = (int32_t)((now_dbl - (double)now_tv.tv_sec) * 1e9); |
| break; |
| case GPR_TIMESPAN: |
| abort(); |
| break; |
| } |
| return now_tv; |
| } |
| |
| void gpr_sleep_until(gpr_timespec until) { |
| gpr_timespec now; |
| gpr_timespec delta; |
| int64_t sleep_millis; |
| |
| for (;;) { |
| /* We could simplify by using clock_nanosleep instead, but it might be |
| * slightly less portable. */ |
| now = gpr_now(until.clock_type); |
| if (gpr_time_cmp(until, now) <= 0) { |
| return; |
| } |
| |
| delta = gpr_time_sub(until, now); |
| sleep_millis = |
| delta.tv_sec * GPR_MS_PER_SEC + delta.tv_nsec / GPR_NS_PER_MS; |
| GPR_ASSERT((sleep_millis >= 0) && (sleep_millis <= INT_MAX)); |
| GRPC_SCHEDULING_START_BLOCKING_REGION; |
| Sleep((DWORD)sleep_millis); |
| GRPC_SCHEDULING_END_BLOCKING_REGION; |
| } |
| } |
| |
| #endif /* GPR_WIN32 */ |