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/*
*
* Copyright 2015, 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 <limits.h>
#include <process.h>
#include <sys/timeb.h>
#include "src/core/lib/support/block_annotate.h"
#include "src/core/lib/support/time_precise.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 */
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