gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/test/util/timer_util.cc (about)

     1  // Copyright 2018 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  #include "test/util/timer_util.h"
    16  
    17  namespace gvisor {
    18  namespace testing {
    19  
    20  absl::Time Now(clockid_t id) {
    21    struct timespec now;
    22    TEST_PCHECK(clock_gettime(id, &now) == 0);
    23    return absl::TimeFromTimespec(now);
    24  }
    25  
    26  #ifdef __linux__
    27  
    28  PosixErrorOr<IntervalTimer> TimerCreate(clockid_t clockid,
    29                                          const struct sigevent& sev) {
    30    int timerid;
    31    int ret = syscall(SYS_timer_create, clockid, &sev, &timerid);
    32    if (ret < 0) {
    33      return PosixError(errno, "timer_create");
    34    }
    35    if (ret > 0) {
    36      return PosixError(EINVAL, "timer_create should never return positive");
    37    }
    38    MaybeSave();
    39    return IntervalTimer(timerid);
    40  }
    41  
    42  #endif  // __linux__
    43  
    44  }  // namespace testing
    45  }  // namespace gvisor