CVS log for src/external/cddl/osnet/dist/tools/ctf/cvt/barrier.h

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Default branch: MAIN

Pull up following revision(s) (requested by riastradh in ticket #221):

	external/cddl/osnet/dist/tools/ctf/cvt/ctfmerge.c: revision 1.18
	external/cddl/osnet/sys/sys/opentypes.h: revision 1.7
	tools/compat/configure: revision 1.100
	external/cddl/osnet/dist/tools/ctf/cvt/barrier.c: revision 1.6
	external/cddl/osnet/dist/tools/ctf/cvt/barrier.h: revision 1.4
	external/cddl/osnet/dist/tools/ctf/cvt/barrier.c: revision 1.7
	external/cddl/osnet/dist/tools/ctf/cvt/barrier.c: revision 1.8
	tools/compat/configure.ac: revision 1.100
	external/cddl/osnet/dist/tools/ctf/cvt/tdata.c: revision 1.10
	tools/compat/nbtool_config.h.in: revision 1.54

ctfmerge: error check sem_*() and pthread_*() APIs

terminate() if sem_*() returns -1 or pthread_*() returns != 0.
(Set errno from pthread_*() so terminate() prints the strerror message).

Note: Failing on errors instead of ignoring them helps identify
reasons for intermittent failures, such as those on macOS host builds:

  ERROR: nbctfmerge: barrier_init: sem_init(bar_sem): Function not implemented

ctfmerge: fix macOS semaphore implementation

Use dispatch_semaphore_create() if present instead of sem_init().
macOS doesn't actually implement sem_init() (et al)
(even though it provides the prototypes as deprecated).

This was detected by the previous commit to ctfmerge
that added error handling.

Implement ctfmerge's barrier operations in terms of
dispatch(3) APIs such as dispatch_semaphore_create() (et al).

Update tools/compat/configure.ac to find dispatch_semaphore_create().
Fixes ctfmerge on macOS hosts.

Inspired by https://stackoverflow.com/a/27847103

tools/compat: regen for dispatch_semaphore_create

ctfmerge: fix macOS semaphore implementation, part 2
dispatch_semaphore_signal() doesn't return an error, just an
indicator of whether a thread was woken or not, so there's
no need to fail on non-zero return.

osnet: on macOS, use <mach/boolean.h> for boolean_t
macOS/x86_64 defines boolean_t as 'unsigned int' not 'int',
which causes a build issue with tools/ctfmerge on that host
after my recent fixes for macOS semaphores.

So use the <mach/boolean.h> instead of a local typedef ifdef __APPLE__.
May fix a macOS/x86_64 build issue reported by cjep@.
Builds fine on NetBSD/amd64 or macOS/arm.

Note: this compat stuff is clunky, and based on the commit log,
annoyingly error prone. A newer sync of osnet from upstream /may/
improve a lot of these compat typedef workarounds for solaris types...

ctfmerge: fix macOS semaphore implementation

Use dispatch_semaphore_create() if present instead of sem_init().

macOS doesn't actually implement sem_init() (et al)
(even though it provides the prototypes as deprecated).
This was detected by the previous commit to ctfmerge
that added error handling.

Implement ctfmerge's barrier operations in terms of
dispatch(3) APIs such as dispatch_semaphore_create() (et al).

Update tools/compat/configure.ac to find dispatch_semaphore_create().

Fixes ctfmerge on macOS hosts.

Inspired by https://stackoverflow.com/a/27847103.

Sync with HEAD

merge a new version of the CDDL dtrace and ZFS code.
this changes the upstream vendor from OpenSolaris to FreeBSD,
and this version is based on FreeBSD svn r315983.

in addition to the 10 years of improvements from upstream,
this version also has these NetBSD-specific enhancements:
 - dtrace FBT probes can now be placed in kernel modules.
 - ZFS now supports mmap().

import new CDDL dtrace and ZFS code from FreeBSD svn r315983.

Add the FreeBSD 8-RC1 changes for DTrace.

Ok with core@.

Import the rest of Opensolaris 20081117 needed for DTrace. No conflicts
with ZFS.

Initial revision