Technical data

Library Functions
59
new_barrier initialize a barrier structure
nice lower priority of a process
open open a file
oserror get/set system error
pause suspend process until signal
perror get system error messages
pipe create an interprocess channel
plock lock process, test, or data in memory
prctl control processes
profil execution-time profile
ptrace process trace
putc write a character to a Fortran logical unit
putenv set environment variable
qsort quick sort
read read from a file descriptor
readlink read value of symbolic link
rename change the name of a file
rmdir remove a directory
sbrk change data segment space allocation
schedctl call to scheduler control
send send a message to a socket
setblockproccnt set semaphore count
setgid set group ID
sethostid set current host ID
Table 4-1
(continued) Summary of System Interface Library Routines
Function Purpose