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

     1  // Copyright 2019 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/time_util.h"
    16  
    17  #include <sys/syscall.h>
    18  #include <unistd.h>
    19  
    20  #include "absl/time/time.h"
    21  
    22  namespace gvisor {
    23  namespace testing {
    24  
    25  void SleepSafe(absl::Duration duration) {
    26    if (duration == absl::ZeroDuration()) {
    27      return;
    28    }
    29  
    30    struct timespec ts = absl::ToTimespec(duration);
    31    int ret;
    32    while (1) {
    33      ret = syscall(__NR_nanosleep, &ts, &ts);
    34      if (ret == 0 || (ret <= 0 && errno != EINTR)) {
    35        break;
    36      }
    37    }
    38  }
    39  
    40  }  // namespace testing
    41  }  // namespace gvisor