Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

getdtablesize(3) [netbsd man page]

GETDTABLESIZE(3)					   BSD Library Functions Manual 					  GETDTABLESIZE(3)

getdtablesize -- get descriptor table size LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <unistd.h> int getdtablesize(void); DESCRIPTION
The getdtablesize function is an equivalent of sysconf() with _SC_OPEN_MAX. SEE ALSO
close(2), dup(2), getrlimit(2), open(2), select(2), sysconf(3) HISTORY
The getdtablesize() function call appeared in 4.2BSD. Historically, each process had a fixed size descriptor table, which is guaranteed to have at least 20 slots. The entries in the descriptor table are numbered with small integers starting at 0. The call getdtablesize() used to return the size of this table. It doesn't make much sense these days because the size of the table is dynamic. BSD
January 5, 2012 BSD

Check Out this Related Man Page

getdtablesize(3C)					   Standard C Library Functions 					 getdtablesize(3C)

getdtablesize - get the file descriptor table size SYNOPSIS
#include <unistd.h> int getdtablesize(void); DESCRIPTION
The getdtablesize() function is equivalent to getrlimit(2) with the RLIMIT_NOFILE option. RETURN VALUES
The getdtablesize() function returns the current soft limit as if obtained from a call to getrlimit() with the RLIMIT_NOFILE option. ERRORS
No errors are defined. USAGE
There is no direct relationship between the value returned by getdtablesize() and OPEN_MAX defined in <limits.h>. Each process has a file descriptor table which is guaranteed to have at least 20 slots. The entries in the descriptor table are numbered with small integers starting at 0. The getdtablesize() function returns the current maximum size of this table by calling the getrlimit() function. SEE ALSO
close(2), getrlimit(2), open(2), setrlimit(2), select(3C) SunOS 5.10 1 Mar 1996 getdtablesize(3C)
Man Page

6 More Discussions You Might Find Interesting

1. Programming

terminal problem

i am executiing some commands using system an popen command in c. while executing the code . some data is shown on terimal without using any print statement. how can i solve this problem thank u sree (1 Reply)
Discussion started by: phani_sree
1 Replies

2. Programming

unresolved symbol on AIX 5.2

Hi, want to port an executable from AIX 5.3 to AIX 5.2. This seems to be no problem, when i build one executable. But in another case i have to link one library statically and the rest is loaded at runtime. This works for AIX 5.3 but on AIX 5.2 i get the following error ... (2 Replies)
Discussion started by: pm_user
2 Replies

3. Programming

which signal will flush the file buffer in C/C++

which signal will flush the file buffer in C/C++? eg. send a signal to flush all the file buffer to a file/stdout with out invoking fflush(). -INT, -TERM? someone please help me, thanks in advance! waiting online... (8 Replies)
Discussion started by: jackliang
8 Replies

4. Programming

how to programing daemon to create log record every second

i write ..... #include <stdio.h> #include <fcntl.h> #include <signal.h> #include <unistd.h> #define RUNNING_DIR "/tmp" #define LOCK_FILE "exampled.lock" #define LOG_FILE "exampled.log" void log_message(filename,message) char *filename; char *message; { FILE... (2 Replies)
Discussion started by: slackman
2 Replies

5. Programming

Why do I receive Program received signal SIGABRT, Aborted?

Im using gdb and when a user disconnects from my server I receive a message Program received signal SIGABRT, Aborted. 0x7ffe0304 in ?? () I was hoping someone here might have a explination for this message in gdb (26 Replies)
Discussion started by: Errigour
26 Replies

6. UNIX for Beginners Questions & Answers

NTP synchronised problem in our Centos 7.6 node

Someone, please help on this issue:- Note : for security reason i didn't mention hostnames and ips. ============================================================================== # ntpstat unsynchronised polling server every 1024 s Ntpstat showing unsynchronised. ... (29 Replies)
Discussion started by: shanmugaraj
29 Replies