asgardius/virtualx-engine
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Fix nanosleep usage

Browse source 
nanosleep returns 0 or -1 not the error code.
The error code "EINTR" (if encountered) is placed in errno, in which case nanosleep can be safely recalled with the remaining time.

This is required, so that nanosleep continues if the calling thread is interrupted by a signal.

See manpage nanosleep(2) for additional details.
This commit is contained in:
Lorenz Junglas 2020-10-12 16:27:31 +02:00
parent ab0907c1ba
commit 1107c7f327
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/unix/os_unix.cpp
View file

@ -235,8 +235,11 @@ OS::TimeZoneInfo OS_Unix::get_time_zone_info() const {
} }
void OS_Unix::delay_usec(uint32_t p_usec) const { void OS_Unix::delay_usec(uint32_t p_usec) const {
struct timespec rem = { static_cast<time_t>(p_usec / 1000000), (static_cast<long>(p_usec) % 1000000) * 1000 }; struct timespec requested = { static_cast<time_t>(p_usec / 1000000), (static_cast<long>(p_usec) % 1000000) * 1000 };
while (nanosleep(&rem, &rem) == EINTR) { struct timespec remaining;
while (nanosleep(&requested, &remaining) == -1 && errno == EINTR) {
requested.tv_sec = remaining.tv_sec;
requested.tv_nsec = remaining.tv_nsec;
} }
} }