src-test/lib/libkse, branch stable/7

MFC r177626, r219096, r219126:

2011-03-05T04:11:06Z

Fix some "in in" typos in comments. PR: 121490 Submitted by: Anatoly Borodin

merge r176060, r176071: add pthread_mutex_isowned_np() (already in libthr)

2009-06-10T12:54:36Z

merge r176055, r176056: use libc's version definition file.

2009-06-10T12:51:58Z

merge r174111, r174112, r174335: style and warning fixes. The functional

2009-06-09T15:09:10Z

parts of these commits have already been merged.

MFC: r179358,179434 - make libc's fcntl symbol weak and extend the limited

2008-06-06T09:09:37Z

forward ABI compatibility for fcntl to the thread libraries.

MFC: Merge malloc(3) improvements and fixes. The highlights are:

2008-03-07T22:39:39Z

* Avoid re-zeroing memory in calloc() when possible. * Use pthread mutexes where possible instead of libc "spinlocks", and actually spin some during contention before blocking. * Implement dynamic load balancing of thread-->arena mapping. * Avoid floating point math in order to avoid increased context switch overhead for applications that otherwise would not use floating point math. * Restructure how sbrk() and mmap() are used to acquire memory mappings. This provides a way to force malloc to only use sbrk(), which can be useful in the context of resource limits. * Reduce the number of mmap() calls typically necessary when allocating a chunk. * Track dirty unused pages so that they can be purged if they exceed a threshold. * Try to realloc() large objects in place. * Manage page runs with trees instead of chunk maps, which allows logarithmic-time run allocation.

MFC changes from 1.14 for sys/lock.c and 1.127+1.128 for thread/thr_kern.c

2008-02-04T19:59:40Z

this copes with the fact that during a fork the child may get really screwy state in the threading system due to the sudden vaporisation of it's sibling threads.

MFC:

2007-12-06T16:22:18Z

To reduce the impact of possible removal of the syscalls required by libkse in FreeBSD 8.0, do not build or install static versions of libkse (i.e. libkse*.a) in the default case. Static versions will be built and installed if libthr is not built or if libkse is the default threading library. Discussed on: freebsd-arch Approved by: re (kensmith)

MFC revision 1.27:

2007-11-26T02:44:05Z

In _pthread_key_create() ensure that libkse is initialized. Approved by: re (kensmith)

MFC: Add support for non-portable adaptive mutexes, as well as experimental

2007-11-14T09:54:48Z

support for spinning/yielding loops. Approved by: re@ (kensmith)