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Add "Core FreeBSD APIs and RTEMS Replacements"

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Sebastian Huber 2012-04-18 11:23:38 +02:00
parent 01e57a9dc6
commit c03e09579b
1 changed files with 99 additions and 0 deletions
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libbsd.txt
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@ -445,3 +445,102 @@ SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW, 0,
"High kernel, proc, limits &c"); "High kernel, proc, limits &c");
---- ----
== Core FreeBSD APIs and RTEMS Replacements ==
=== SX(9) (Shared/exclusive locks) ===
http://www.freebsd.org/cgi/man.cgi?query=sx
Binary semaphores (this neglects the ability to allow shared access).
=== MUTEX(9) (Mutual exclusion) ===
http://www.freebsd.org/cgi/man.cgi?query=mutex
Binary semaphores (not recursive mutexes are not supported this way).
=== RWLOCK(9) (Reader/writer lock) ===
http://www.freebsd.org/cgi/man.cgi?query=rwlock
POSIX r/w lock.
=== RMLOCK(9) (Reader/writer lock optimized for mostly read access patterns) ===
http://www.freebsd.org/cgi/man.cgi?query=rmlock
POSIX r/w lock.
=== CONDVAR(9) (Condition variables) ===
http://www.freebsd.org/cgi/man.cgi?query=condvar
POSIX condition variables with modifications (hack).
=== CALLOUT(9) (Timer functions) ===
http://www.freebsd.org/cgi/man.cgi?query=callout
Timer server.
=== TASKQUEUE(9) (Asynchronous task execution) ===
http://www.freebsd.org/cgi/man.cgi?query=taskqueue
TBD.
=== KTHREAD(9), KPROC(9) (Tasks) ===
http://www.freebsd.org/cgi/man.cgi?query=kthread
http://www.freebsd.org/cgi/man.cgi?query=kproc
Tasks.
=== ZONE(9) (Zone allocator) ===
http://www.freebsd.org/cgi/man.cgi?query=zone
TBD.
=== devfs (Device file system) ===
Dummy, IMFS or new implementation (currently dummy).
=== psignal (Signals) ===
TBD. Seems to be not needed.
=== poll, select ===
TBD. Seems to be not needed.
=== RMAN(9) (Resource management) ===
http://www.freebsd.org/cgi/man.cgi?query=rman
TBD. Seems to be not needed.
=== DEVCLASS(9), DEVICE(9), DRIVER(9), MAKE_DEV(9) (Device management) ===
http://www.freebsd.org/cgi/man.cgi?query=devclass
http://www.freebsd.org/cgi/man.cgi?query=device
http://www.freebsd.org/cgi/man.cgi?query=driver
http://www.freebsd.org/cgi/man.cgi?query=make_dev
Use FreeBSD implementation as far as possible. FreeBSD has a nice API for
dynamic device handling. It may be interesting for RTEMS to use this API
internally in the future.
=== BUS_SPACE(9), BUS_DMA(9) (Bus and DMA access) ===
http://www.freebsd.org/cgi/man.cgi?query=bus_space
http://www.freebsd.org/cgi/man.cgi?query=bus_dma
Likely BSP dependent. A default implementation for memory mapped linear access
is easy to provide. The current heap implementation supports all properties
demanded by bus_dma (including the boundary constraint).