1 /*
2 *
3 * Copyright 2015 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 #include <grpc/support/time.h>
20 #include <grpcpp/support/config.h>
21 #include <grpcpp/support/time.h>
22
23 using std::chrono::duration_cast;
24 using std::chrono::high_resolution_clock;
25 using std::chrono::nanoseconds;
26 using std::chrono::seconds;
27 using std::chrono::system_clock;
28
29 namespace grpc {
30
Timepoint2Timespec(const system_clock::time_point & from,gpr_timespec * to)31 void Timepoint2Timespec(const system_clock::time_point& from,
32 gpr_timespec* to) {
33 system_clock::duration deadline = from.time_since_epoch();
34 seconds secs = duration_cast<seconds>(deadline);
35 if (from == system_clock::time_point::max() ||
36 secs.count() >= gpr_inf_future(GPR_CLOCK_REALTIME).tv_sec ||
37 secs.count() < 0) {
38 *to = gpr_inf_future(GPR_CLOCK_REALTIME);
39 return;
40 }
41 nanoseconds nsecs = duration_cast<nanoseconds>(deadline - secs);
42 to->tv_sec = static_cast<int64_t>(secs.count());
43 to->tv_nsec = static_cast<int32_t>(nsecs.count());
44 to->clock_type = GPR_CLOCK_REALTIME;
45 }
46
TimepointHR2Timespec(const high_resolution_clock::time_point & from,gpr_timespec * to)47 void TimepointHR2Timespec(const high_resolution_clock::time_point& from,
48 gpr_timespec* to) {
49 high_resolution_clock::duration deadline = from.time_since_epoch();
50 seconds secs = duration_cast<seconds>(deadline);
51 if (from == high_resolution_clock::time_point::max() ||
52 secs.count() >= gpr_inf_future(GPR_CLOCK_REALTIME).tv_sec ||
53 secs.count() < 0) {
54 *to = gpr_inf_future(GPR_CLOCK_REALTIME);
55 return;
56 }
57 nanoseconds nsecs = duration_cast<nanoseconds>(deadline - secs);
58 to->tv_sec = static_cast<int64_t>(secs.count());
59 to->tv_nsec = static_cast<int32_t>(nsecs.count());
60 to->clock_type = GPR_CLOCK_REALTIME;
61 }
62
Timespec2Timepoint(gpr_timespec t)63 system_clock::time_point Timespec2Timepoint(gpr_timespec t) {
64 if (gpr_time_cmp(t, gpr_inf_future(t.clock_type)) == 0) {
65 return system_clock::time_point::max();
66 }
67 t = gpr_convert_clock_type(t, GPR_CLOCK_REALTIME);
68 system_clock::time_point tp;
69 tp += duration_cast<system_clock::time_point::duration>(seconds(t.tv_sec));
70 tp +=
71 duration_cast<system_clock::time_point::duration>(nanoseconds(t.tv_nsec));
72 return tp;
73 }
74
75 } // namespace grpc
76