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nanosleep

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# 1  
Old 09-17-2010
nanosleep
Application runs on both solaris 6 and 10.
solaris 6 having only posix4.so library, solaris 10 having libposix4.so and librt.so

Can we link application to lposix4 instead of lrt for nanosleep, sothat application will run in both machines?
# 2  
Old 09-17-2010
nanosleep seems to also exist in the libposix4.so on Solaris 10
(I guess for backwards compatibility):
Code:
# nm -p /usr/lib/libposix4.so | grep nano
0000009828 T _nanosleep
0000009828 T nanosleep

And a small test program proves that the posix4 version still works fine:
Code:
# cat try.c
#include <time.h>

main()
{
        struct timespec t={0};
        t.tv_sec = 5;
        t.tv_nsec =0;
        printf("%d\n",nanosleep(&t,NULL));
}       
# gcc try.c -lposix4
# time ./a.out 
0

real    0m5.019s
user    0m0.003s
sys     0m0.010s
#

I hope this helps...
# 3  
Old 09-17-2010
nanosleep in librt is same as in posix4? There won't be much concern on what we link?
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