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minor changes.

This commit is contained in:
Michael Kerrisk 2008-01-08 13:22:09 +00:00
parent 53255c2be2
commit ffe649e940
1 changed files with 4 additions and 6 deletions
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10
man7/pthreads.7
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@ -112,13 +112,12 @@ On Linux, programs that use the Pthreads API should be compiled using
.SS "Linux Implementations of POSIX Threads"
Over time, two threading implementations have been provided by
the GNU C library on Linux:
.IP \- 3
.TP
.B LinuxThreads
This is the original Pthreads implementation.
Since glibc 2.4, this implementation is no longer supported.
.IP \- 3
.B NPTL
(Native POSIX Threads Library)
.TP
.BR NPTL " (Native POSIX Threads Library)"
This is the modern Pthreads implementation.
By comparison with LinuxThreads, NPTL provides closer conformance to
the requirements of the POSIX.1 specification and better performance
@ -128,7 +127,6 @@ and requires features that are present in the Linux 2.6 kernel.
.PP
Both of these are so-called 1:1 implementations, meaning that each
thread maps to a kernel scheduling entity.
Both threading implementations employ the Linux
.BR clone (2)
system call.
@ -247,7 +245,7 @@ NPTL does not employ a manager thread.
NPTL makes internal use of the first two real-time signals;
these signals cannot be used in applications.
NPTL still has a few non-conformances with POSIX.1:
NPTL still has at least one non-conformance with POSIX.1:
.IP \- 3
Threads do not share a common nice value.
.\" FIXME . bug report filed for NPTL nice non-conformance