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225 Commits

Author SHA1 Message Date
pooka 8a7d14d1c2 Fix locking SNAFU. 
Is someone can explain why the code worked for 3+ years with multiple
different pthread implementations, I'll buy you a banana.
 2014-02-28 13:55:36 +00:00
pooka a2867970a4 emulate printflike properly to avoid fatal error on clang 2014-02-25 20:58:18 +00:00
pooka 613311d8d7 remember to commit this file too 2014-02-20 01:24:49 +00:00
pooka fb8e281673 make implementation of rumpuser_kill() match the documentation 2014-02-20 00:44:20 +00:00
pooka 64a85ea946 document rumpuser_kill() 2014-02-20 00:43:26 +00:00
pooka 437e54a701 Translate signal numbers between rump kernel and (POSIX) host. 2014-02-20 00:42:27 +00:00
pooka 177c2413c9 minor clarification: rumpuser_thread_create() is used to create the host 
thread context for kernel threads, never for application threads.

per discussion with justin
 2014-02-14 00:33:51 +00:00
pooka 8d2ee87e24 Do not force _FILE_OFFSET_BITS=64 here. It's no longer strictly speaking 
required (rumpuser interface no longer uses off_t) and force-defining
it causes foo() to magically become foo64() on glibc (even on 64bit
platforms).
 2014-01-16 16:03:33 +00:00
pooka 29316c504c Make setprogname() a nop where it's not supported. 2014-01-15 16:53:15 +00:00
pooka 2b361b10dd remove obsolete definitions 2014-01-08 11:04:47 +00:00
pooka 6459f6aa95 do as the comment says and #if defined(every_other) || defined(platform) || ... 
===> #if !defined(__NetBSD__)
 2014-01-08 01:47:31 +00:00
pooka f67143f64b OpenBSD support 
from Justin Cormack via github
 2014-01-08 01:45:29 +00:00
pooka 55ffc8641a Do not export symbols which don't need to be exported. 
via Justin Cormack
 2013-12-31 00:25:17 +00:00
pooka cbbcae5f8b remove outdated comment (since quite a few months ago) 2013-12-18 20:24:04 +00:00
pooka 9f9913cebe Workaround a gcc -Wuninitilized whine 
github/buildrump.sh issue #44
 2013-11-01 23:22:13 +00:00
pooka d3852222c9 Oh, stdint.h isn't written with a comma ... 2013-10-30 13:08:14 +00:00
pooka e5aed19d72 need to include stdint.h before rump/rumpuser.h 2013-10-30 12:55:53 +00:00
pooka 079cd2100d glibc on MIPS uses the same DYN d_ptr variant as NetBSD and musl. 
from Justin Cormack
 2013-10-30 12:30:32 +00:00
rmind d60eb8c12f librumpuser: add some #ifdef __APPLE__ and missing bits to build it on OS X. 
OK pooka@
 2013-10-27 16:39:46 +00:00
rmind 0f412aba18 Give RUMP mutex and rwlock their own cache-line. Also give a separate 
cache-line for the rwlock's reader counter.
 2013-09-26 00:41:51 +00:00
rmind 72b022939e rumpuser_rwlock: replace internal pthread_spin_lock (for protecting reader 
count) with atomic operations.  As pthread_spin_lock is not adaptive lock, it
can have hugely negative impact if contended here, especially with priority
inversions.  Now contended rwlock(9) no longer falls flat in RUMP kernels.
 2013-09-24 23:45:16 +00:00
pooka 4be69cd08b If pthread_create() fails with EAGAIN, try a few more times with short 
sleeps in between.  If it helps, good.  If it doesn't, oh well, at
least we tried.  pthread_create() returning EAGAIN has been observed in
real life at least on Linux (buildrump.sh issue #40)
 2013-09-23 10:35:20 +00:00
pooka b3e8687dfb more platform-specific qualifiers 2013-09-10 17:58:39 +00:00
pooka 6cd40f3fba Install rumpuser_port.h 2013-09-10 16:51:24 +00:00
pooka e9fe155c86 Change the default value of rump kernels CPUs to 2. It used to be 
the number of host cores, but that value is overkill for most uses,
especially with massively multicore hosts.  Dozens of useless virtual
CPUs are relatively speaking expensive in terms of bootstrap time and
memory footprint.  On the other end of the spectrum, defaulting to 2
might shake out some bugs from the qemu test runs.
 2013-08-14 08:29:25 +00:00
pooka f3adf1e54f comment polish: just musl 2013-07-30 18:56:03 +00:00
pooka aaf7a23bf7 Decide ET_DYN behavior based on __GLIBC__ instead of __linux__, 
e.g. musl libc doesn't follow glibc behavior.

per discussions with a number of people
 2013-07-30 18:48:51 +00:00
njoly f2bb7e6625 Use <major>.<minor> for NetBSD version. 2013-07-22 12:36:56 +00:00
pooka 3fcbbf6450 TIMEVAL_TO_TIMESPEC (for musl) 
from Justin Cormack
 2013-07-22 08:58:31 +00:00
pooka 40fd6d6fa3 Fixes when compiling against musl libc. 
from Justin Cormack via private email
 2013-07-20 18:46:15 +00:00
pooka f768d01c4f Fix build where compiler can throw an array-bounds error and 
code is built with NDEBUG
	or
	platform's assert is not __dead
 2013-07-18 12:28:26 +00:00
pooka 69c4f929cd FreeBSD does the Solaris-like map->l_addr boogie. 
from Ben Gras
 2013-06-04 15:17:28 +00:00
wiz 890db9708a More markup, less typos. 2013-05-15 22:09:32 +00:00
pooka 03395b4cf5 also, bsd.own.mk to pick up mk.conf 2013-05-15 20:47:20 +00:00
pooka 5666bf4b73 Make it possible for external parties to specify additional dplibs. 
This is useful for example on platforms which require -ldl.
 2013-05-15 20:27:00 +00:00
pooka 907ce8379e Improve documentation on the locking order of cv_wait mtx/cpu. 2013-05-15 17:53:09 +00:00
pooka 3306a659de Add a generalized rumpuser_syncfd() call which allows the caller 
to request a sync or a barrier for fd.
 2013-05-15 15:57:01 +00:00
pooka 601de6b09f Pass off_t over the hypercall interface as int64_t to avoid potential 
problems in setups where off_t doesn't want to be 64bit.

I'm already excitedly waiting for 128bit off_t and _LARGE_LARGE_FILES
 2013-05-15 14:58:24 +00:00
pooka 15dc8bf975 Pass enums over the hypercall interface as ints to avoid some 
pathological scenarios from arising in setups where enums might be
of a different size in the rump kernel and hypervisor.
 2013-05-15 14:52:49 +00:00
pooka d0d5069c1a Add RUMPUSER_LWP_CLEAR instead of overloading RUMPUSER_LWP_SET. 
This simplifies some alternative hypervisor implementations.
 2013-05-15 14:07:26 +00:00
pooka af9586a1db need the rw_downgrade/tryupgrade methods too 2013-05-07 16:40:31 +00:00
pooka c0e1ad2997 update to recent interface changes 2013-05-07 15:37:05 +00:00
pooka 059f8df6f9 include stdint.h before rumpuser.h (on some platforms it doesn't get 
there automagically)
 2013-05-07 15:18:35 +00:00
pooka 302678cea5 Initialize rw->downgrade when allocating a rwlock. 
should/might/etc fix recent test hangs reported by martin & pgoyette
 2013-05-05 12:27:38 +00:00
wiz 1747869c0f Fix some punctuation nits and bump date for previous. 2013-05-03 20:27:16 +00:00
pooka cfbb87e05b Support proper rw_downgrade() semantics. 2013-05-03 00:23:49 +00:00
pooka 92e27cb3c3 reorder for better locality. no functional change. 2013-05-02 22:07:57 +00:00
pooka f448fededb update for previous change 2013-05-02 21:47:12 +00:00
pooka 5606f9bf46 Ok, maybe using int64 for nanoseconds in the (sec,nsec) tuple was 
a bit too future-proof.  I think long is enough there (let's just
hope nobody redefines "nano").  Also, make seconds signed just in
case someone wants their clock to be in 1901.
 2013-05-02 21:45:28 +00:00
pooka f950fd3d52 Push rwlock upgrade and downgrade into the hypervisor where there's 
at least a chance to implement them with minimal fuss.
 2013-05-02 21:35:19 +00:00