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Re: Does anybody know the meaning of compiler option -pthread for slapd?
--On 07/16/00 20:49:26 +0900 firstname.lastname@example.org wrote:
I like to know the meaning of compile option -pthread in belows
pthreads are POSIX threads. Threads are lightweight processes. When a
thread, or LWP, is created, it shares data memory allocations with it's
parents, siblings, and any children it may further create through a very
complex mechanism of fine grained locks. The bottom line is that process
creation is about 20 to 30 times more expensive than thread creation.
Also, is the kernel is fully threaded there is a further performance boost
in that the kernel now has multiple access points and not a single door.
That's exceedingly important in multi-user OS's like UNIX wheremany
different processes/threads belonging to many different applications/users
are going to be asking for kernel services at the same time.
gcc -g -O2 -I../../include -I../../include -DHAVE_CONFIG_H
-L/root/openldap-1.2. 11/libraries -o slapd main.o daemon.o connection.o
search.o filter.o add.o charr ay.o attr.o entry.o config.o backend.o
result.o operation.o dn.o compare.o modif y.o delete.o modrdn.o
ch_malloc.o value.o ava.o bind.o unbind.o abandon.o filter entry.o
phonetic.o acl.o str2filter.o aclparse.o init.o repl.o lock.o suffixalia
s.o schema.o schemaparse.o monitor.o configinfo.o version.o libbackends.a
-lavl -lldbm -lldif -lldap -llber -llthread -llutil -lcrypt -lutil
I am making an openldap box with PC running freebsd.
It doesn't have the support of shared library or something like that
because it has floppy version of freebsd and its freebsd is very small.
I succeeded in compiling, test and install openldap for ordinary freebsd
PC. Then I made slapd command compiled with -static option with gcc and
it worked with ordinary freebsd PC.
But, It could not work with floppy freebsd.
What does -pthread option of gcc means for kernel?
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UNIX and Networks Manager
Linfield College, McMinnville OR
(503) 434-2558 <email@example.com>