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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" .SS "Linux Implementations of POSIX Threads"
Over time, two threading implementations have been provided by Over time, two threading implementations have been provided by
the GNU C library on Linux: the GNU C library on Linux:
.IP \- 3 .TP
.B LinuxThreads .B LinuxThreads
This is the original Pthreads implementation. This is the original Pthreads implementation.
Since glibc 2.4, this implementation is no longer supported. Since glibc 2.4, this implementation is no longer supported.
.IP \- 3 .TP
.B NPTL .BR NPTL " (Native POSIX Threads Library)"
(Native POSIX Threads Library)
This is the modern Pthreads implementation. This is the modern Pthreads implementation.
By comparison with LinuxThreads, NPTL provides closer conformance to By comparison with LinuxThreads, NPTL provides closer conformance to
the requirements of the POSIX.1 specification and better performance 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 .PP
Both of these are so-called 1:1 implementations, meaning that each Both of these are so-called 1:1 implementations, meaning that each
thread maps to a kernel scheduling entity. thread maps to a kernel scheduling entity.
Both threading implementations employ the Linux Both threading implementations employ the Linux
.BR clone (2) .BR clone (2)
system call. system call.
@ -247,7 +245,7 @@ NPTL does not employ a manager thread.
NPTL makes internal use of the first two real-time signals; NPTL makes internal use of the first two real-time signals;
these signals cannot be used in applications. 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 .IP \- 3
Threads do not share a common nice value. Threads do not share a common nice value.
.\" FIXME . bug report filed for NPTL nice non-conformance .\" FIXME . bug report filed for NPTL nice non-conformance