// Module: Log4CPLUS // File: sleep.cxx // Created: 5/2003 // Author: Tad E. Smith // // // Copyright 2003-2013 Tad E. Smith // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #include #include #include #include #if defined (LOG4CPLUS_HAVE_ERRNO_H) #include #endif #if defined (LOG4CPLUS_HAVE_TIME_H) #include #endif namespace log4cplus { namespace helpers { /////////////////////////////////////////////////////////////////////////////// // public methods /////////////////////////////////////////////////////////////////////////////// int const MILLIS_TO_NANOS = 1000000; int const SEC_TO_MILLIS = 1000; #if ! defined (_WIN32) static inline int unix_nanosleep (const struct timespec *req, struct timespec *rem) { #if defined (LOG4CPLUS_HAVE_CLOCK_NANOSLEEP) \ && ! defined (__BIONIC__) // We do not allow Android with Bionic C library to use // clock_nanosleep() as it is missing declaration in headers. return clock_nanosleep (CLOCK_REALTIME, 0, req, rem); #elif defined (LOG4CPLUS_HAVE_NANOSLEEP) return nanosleep (req, rem); #else # error no nanosleep() or clock_nanosleep() #endif } #endif void sleep(unsigned long secs, unsigned long nanosecs) { #if defined(_WIN32) DWORD const MAX_SLEEP_SECONDS = 4294966; // (2**32-2)/1000 DWORD nano_millis = nanosecs / static_cast(MILLIS_TO_NANOS); if (secs <= MAX_SLEEP_SECONDS) { Sleep((secs * SEC_TO_MILLIS) + nano_millis); return; } DWORD no_of_max_sleeps = secs / MAX_SLEEP_SECONDS; for(DWORD i = 0; i < no_of_max_sleeps; i++) { Sleep(MAX_SLEEP_SECONDS * SEC_TO_MILLIS); } Sleep((secs % MAX_SLEEP_SECONDS) * SEC_TO_MILLIS + nano_millis); #else timespec sleep_time = { static_cast(secs), static_cast(nanosecs) }; timespec remain; while (unix_nanosleep (&sleep_time, &remain)) { if (errno == EINTR) { sleep_time.tv_sec = remain.tv_sec; sleep_time.tv_nsec = remain.tv_nsec; continue; } else { return; } } #endif } void sleepmillis(unsigned long millis) { unsigned long secs = millis / SEC_TO_MILLIS; unsigned long nanosecs = (millis % SEC_TO_MILLIS) * MILLIS_TO_NANOS; sleep(secs, nanosecs); } } } // namespace log4cplus { namespace helpers {