Add a user-defined name to the self-contained synchronization objects in
order to make system diagnostics, tracing and debugging more user
friendly.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
RTEMS defined SEM_VALUE_MAX to 32767 unlike other systems like FreeBSD
and glibc. A common value is INT_MAX.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
In order to enable proper detection of thread-local storage availability
we have to provide some symbols on ARM.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Turn pthread_spinlock_t into a self-contained object. On uni-processor
configurations, interrupts are disabled in the lock/trylock operations
and the previous interrupt status is restored in the corresponding
unlock operations. On SMP configurations, a ticket lock is a acquired
and released in addition.
See also:
https://devel.rtems.org/ticket/2674
This implementation is simple and efficient. However, this test case of
the Linux Test Project would fail due to call of printf() and sleep()
during spin lock ownership:
https://github.com/linux-test-project/ltp/blob/master/testcases/open_posix_testsuite/conformance/interfaces/pthread_spin_lock/1-2.c
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This makes it possible provide operating system specific types for
<pthread.h>. It is in line with the FreeBSD header file structure and
allows a future cleanup of <pthread.h> to not expose unrelated things
via <sys/types.h> and <unistd.h>. Glibc uses the similar
<bits/pthreadtypes.h> for this purpose.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Add _TICKET_LOCK_INITIALIZER to statically initialize a
_Ticket_lock_Control structure. This makes it possible to embed a
ticket lock in other structures outside of <sys/lock.h>.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
The FreeBSD kernel types are not used in Newlib. Provide them via an
external header file to decouple Newlib and FreeBSD updates for RTEMS.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This file was copied verbatim from FreeBSD and is in sync
with the FreeBSD svn version used by rtems-libbsd.
Signed-off-by: Joel Sherrill <joelemail@rtems.org>
Add makedocbook, a tool to process makedoc markup and output DocBook XML
refentries.
Process all the source files which are processed with makedoc with
makedocbook as well
Add chapter-texi2docbook, a tool to automatically generate DocBook XML
chapter files from the chapter .texi files. For generating man pages all we
care about is the content of the refentries, so all this needs to do is
convert the @include of the makedoc generated .def files to xi:include of
the makedocbook generated .xml files.
Add skeleton Docbook XML book files, lib[cm].in.xml which include these
generated chapters, which in turn include the generated files containing
refentries, which is processed with xsltproc to generate the lib[cm].xml
Add new make targets to generate and install man pages from lib[cm].xml
Add makedocbook, a tool to process makedoc markup and output DocBook XML
refentries.
Process all the source files which are processed with makedoc with
makedocbook as well
Add chapter-texi2docbook, a tool to automatically generate DocBook XML
chapter files from the chapter .texi files. For generating man pages all we
care about is the content of the refentries, so all this needs to do is
convert the @include of the makedoc generated .def files to xi:include of
the makedocbook generated .xml files.
Add skeleton Docbook XML book files, lib[cm].in.xml which include these
generated chapters, which in turn include the generated files containing
refentries, which is processed with xsltproc to generate the lib[cm].xml
Add new make targets to generate and install man pages from lib[cm].xml
Add _Thread_queue_Queue::_owner which will be used for the upcomming
priority inheritance implementation and an O(m) independence-preserving
protocol (OMIP) implementation.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Move _Thread_queue_Queue::_Lock to begin of the structure. On RTEMS,
the presence of a lock component in the thread queue structures actually
depends on the build-time RTEMS_SMP configuration option. A move of
this part to the begin of the structure allows an implementation re-use
for the other parts.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Provide the following types via <sys/types.h> on RTEMS for FreeBSD
compatibility if __BSD_VISIBLE
* accmode_t,
* cap_rights_t,
* c_caddr_t,
* cpulevel_t,
* fixpt_t,
* lwpid_t,
* uintfptr_t,
* vm_offset_t,
* vm_ooffset_t,
* vm_paddr_t,
* vm_pindex_t, and
* vm_size_t.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
The dummy crt0.c provided by the RTEMS target provides stubs of
symbols which would normally be provided by RTEMS. This patch adds
stubs for posix_memalign() as well as the synchronization methods
prototyped in <sys/lock.h>.
Newlib defines defaults for internal types via <sys/_types.h> and uses
<machine/_types.h> to let targets define their own type if necessary.
Previously for example
#ifndef __dev_t_defined
typedef short __dev_t;
#endif
However, the __*_t_defined pattern conflicts with the glibc type guard
pattern for user types, e.g. dev_t in this example. Introduce a
__machine_*_t_defined pattern for internal types (defined by
<machine/_types.h>, used by <sys/_types.h>). For example
#ifndef __machine_dev_t_defined
typedef short __dev_t;
#endif
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This change solves a glibc/BSD compatibility problem.
glibc and BSD use double underscore types for internal types. The Linux
port of Newlib uses some glibc provided internal type definitions which
are not protected by guard defines, e.g. __off_t. To avoid a conflict
Newlib uses single underscore types for some internal types, e.g.
_off_t. However, for BSD compatibility we have to define the internal
types with double underscore names in <sys/_types.h>.
The header file <machine/types.h> is Newlib-specific. It was used
instead of <sys/_types.h> to provide the internal type definitions
_CLOCK_T, _TIME_T_, _CLOCKID_T_, _TIMER_T_, and __suseconds_t. Move
these definitions to <sys/_types.h> (there exist two instances of this
file, one for Linux and one for all other targets). This makes the
_HAVE_SYSTYPES configuration define obsolete (could possibly break the
__RDOS__ target). Use the standard <sys/_types.h> include throughout.
Move __loff_t defintion to default (non-Linux) <sys/_types.h>. Define
it via _off64_t to avoid a dependency on the compiler.
Provide the __off_t definition via default (non-Linux) <sys/_types.h>
based on _off_t for all systems except Cygwin. For Cygwin use _off64_t.
Define off_t via __off_t.
Provide the __pid_t definition via default (non-Linux) <sys/_types.h>.
This prevents a potential __pid_t and pid_t incompatibility. Add BSD
guard defines for pid_t.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Move the kernel dependent parts of <sys/time.h> to new system-specific
header file <machine/_time.h>. Provide an empty default implementation.
Add a specialized implementation for RTEMS.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This include is not present in default Newlib, glibc and FreeBSD
<sys/param.h>. With it there is now a conflict with <sys/libkern.h>
introduced by ecf453f963.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Sebastian Huber
Joel Sherrill
Jeff Johnston
Gedare Bloom
Jon Turney
Kuba Sejdak