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2013-06-01something's not quite right yet. ticket locks result in more CPU usageTed Unangst
and spinning in kernel. partially back out, but in a way that makes going forward again easy. seen by ajacoutot
2013-06-01cleanup and consolidate the spinlock_lock (what a name!) code.Ted Unangst
it's now atomic_lock to better reflect its usage, and librthread now features a new spinlock that's really a ticket lock. thrlseep can handle both types of lock via a flag in the clock arg. (temp back compat hack) remove some old stuff that's accumulated along the way and no longer used. some feedback from dlg, who is concerned with all things ticket lock. (you need to boot a new kernel before installing librthread)
2013-06-01fix wrong fn name in debugTed Unangst
2013-06-01Add utrace(2), a system call allowing for userland to send its own ktraceMiod Vallat
records. From FreeBSD via otto@, with tweaks suggested by guenther@. Commite on behalf of otto@ who is not around, to ride the libc minor bump. Causes a librthread minor bump as well (new syscall).
2013-05-06If the lock is contended, such that the 'sc' fails, then we need toPhilip Guenther
reset the %2 register with _SPINLOCK_LOCKED before retrying. tobiasu@ hit the problem and figured out that ".set noreorder" is needed in the ASM
2013-04-29Extend P_SIGSUSPEND handling in userret() to properly restore theMatthew Dempsky
sigmask even if there are no pending signals under the temporary sigmask. Refactor existing select() and poll() system calls to introduce the pselect() and ppoll() system calls. Add rthread wrappers for pselect() and ppoll(). While there, update cancellation point comments to reflect recent fdatasync() addition. Minor bumps for libc and librthread due to new symbols. ok guenther, millert, deraadt, jmc
2013-04-06remove more references to kern.rthreads sysctl.Ted Unangst
many thanks to jmc for noticing
2013-04-06fix race when exiting a detached thread. observed by and ok guentherTed Unangst
2013-03-31- Don't include guard pages in the stack size.Kurt Miller
From Christian Schulte (cs at schulte.it) - Use stack->sp instead of recalculating it. From guenther@ okay guenther@
2013-03-24SEM_VALUE_MAX belongs in <limits.h> (via sys/syslimits.h)Philip Guenther
struct sem --> struct __sem (doesn't belong in public namespace) Zap pointless _KERNEL tests ok deraadt@
2013-03-21Do not need machine/param.hTheo de Raadt
2013-02-15Revert previous diff: sparc and sparc64 don't set the TCB to NULL in exec, yet,Philip Guenther
and vax doesn't support symbols that are both weak and undefined (yet?). sparc issue diagnosed by kettenis@, vax problem found by todd@
2013-02-14Make libpthread compatible with an ld.so that does TCB allocation:Philip Guenther
if the initial thread already has a TCB then don't override it, and if the _dl_allocate_tls() and _dl_free_tls() symbols exist then use them instead of malloc/free ok kettenis@
2013-02-02Userland bits for m68k/ELF. Mostly addition of register prefixes to theMiod Vallat
assembler instructions, and cope with the few changes in return values location.
2013-01-27Make this PIC-aware.Miod Vallat
2013-01-23ARMv7 doesn't support the atomic SWP instruction anymore. Use the atomicPatrick Wildt
load and store instructions instead. ok miod@
2013-01-11Add END() directives to the various functions.Miod Vallat
Make the code PIC-aware when necessary (i.e. invoke other functions through the PLT, and access global data through the GOT). No change for non-PIC compilation.
2013-01-05Switch m88k ports to ELF.Miod Vallat
2012-11-22Do not pass -Wmissing-prototypes when building on a non-ELF platform withMiod Vallat
gcc 3 as the compiler. The way constructors are built triggers this warning, which is fatal because of -Werror. ok espie@ guenther@
2012-11-10raise() is now correctly defined in libcPhilip Guenthe
2012-09-12Define empty CDIAGFLAGS for programs that use Werror.Christiano F. Haesbaert
Makes "make build" build with WARNINGS=Yes on amd64. ok espie
2012-08-22We want to check that the dynamic linker is available at run-time, soMatthew Dempsky
we should actually check for _DYNAMIC at run-time rather than checking for __PIC__ at compile time, since the two are actually independent. Problem and solution identified by guenther; minor tweaks by me. ok guenther
2012-08-22Test for __PIC__ instead of PIC in preparation for eliminating -DPICMatthew Dempsky
from bsd.lib.mk for C source files. ok deraadt, pascal
2012-08-22Convert cpp | as rules in bsd.lib.mk and lib/libc/sys/Makefile.inc to pure ccPascal Stumpf
invocations. This allows us to use the compiler builtin define __PIC__ to check for PIC/PIEness rather than passing -DPIC. Simplifies PIE work a lot. ok matthew@, conceptually ok kurt@
2012-08-15A couple small but long anticipated changes:Matthew Dempsky
- Link libpthread.so with -znodlopen. Because libpthread overrides the weak symbols in libc, we can't allow it to be dynamically loaded or else libc's weak symbols might have already been resolved by ld.so. (Also, major bump because this is technically a backwards incompat change in behavior, although dlopen()ing libpthread never really worked.) - Link libc.so with -nodefaultlibs -lgcc. This ensures that libc doesn't try to link against itself (which ld.so wouldn't like). - Change GCC 4 to link shared objects with -lpthread and -lc as appropriate, now that there's no issues with doing so. This means that it's no longer necessary to patch software to use -pthread instead of -lpthread. (Ports tree rejoice!) Also, to preemptively answer this question: No, this does not eliminate the need for LD_PRELOAD=libpthread.so. That's a separate issue that won't be resolved until we eliminate libc's weak symbols. Discussed extensively on email and icb over the past few months. ok deraadt
2012-08-15Oops, on a.out architectures __cerror() is called _cerror(). FixMatthew Dempsky
accordingly so vax can build again. ok deraadt
2012-08-13Add explicit references from rthread.o to all of the weak symbolMatthew Dempsky
overrides provided by libpthread.a. This ensures that statically linked threaded programs use (e.g.) __cerror() from libpthread.a instead of libc.a. (Same idea previously used by libuthread.) Thanks to fgsch@ for pointing out libuthread's solution to the static linking problem. ok guenther@, tedu@;
2012-08-04Fix caching of stacks allocated with the default attributes.Philip Guenthe
based on a diff from Christian Schulte (cs at schulte.it)
2012-08-02remove leftover NOLINT, WANTLINT, LINTFLAGS, LOBJ vars and lint targets.Okan Demirmen
ok guenther@
2012-06-21Update to reflect API changesPhilip Guenthe
2012-06-21__tfork() needs to set the stack address of the new thread in the kernel,Philip Guenthe
so that it can't get a signal while still running on the parent thread's stack. Also, pass in sizeof(struct __tfork) to provide forward compat when more members are added. This is an ABI change, so switch syscall numbers and bump lib majors this time. ok deraadt@ matthew@
2012-05-06Style nits from Brad.Paul Irofti
2012-05-03Add pthread spinlock support.Paul Irofti
Implementation, documentation and naive regression tests for: - pthread_spin_init() - pthread_spin_destroy() - pthread_spin_lock() - pthread_spin_trylock() - pthread_spin_unlock() Implementation okay guenther@, documentation okay jmc@.
2012-04-23Honor subsystem style.Paul Irofti
`Visual inspection looks ok' kurt@. >From Brad
2012-04-17Remove "#define _POSIX_THREADS" line before include <pthread.h>.Miod Vallat
The latter contains "#define _POSIX_THREADS 1" which makes gcc 2.95 complain.
2012-04-14Add new mutex type, PTHREAD_MUTEX_STRICT_NP which checks for applicationKurt Miller
errors similar to PTHREAD_MUTEX_ERRORCHECK, however upon error it aborts. The rational is that many applications don't check the return values on pthread functions and will miss the errors that ERRORCHECK returns. PTHREAD_MUTEX_STRICT_NP will be our default mutex type for awhile okay guenther@ dcoppa@
2012-04-13Provide _atomic_lock() and __cerror() for hppa64. Makes hppa64 build again.Joel Sing
2012-04-13Use PTHREAD_MUTEX_DEFAULT in static init and mutexattr_init. If theKurt Miller
default mutex type changes to NORMAL, when there is an uninitialized mutex provided to unlock, allow it to succeed similar to an unlocked mutex. For other cases abort instead of segfault. okay guenther@
2012-04-13Per POSIX, PTHREAD_MUTEX_NORMAL type mutexes have undefined behavior forKurt Miller
certain conditions. In the case of unlocking an unlocked mutex we will allow that to succeed, all other undefined behaviors will result in an immediate abort(). okay guenther@
2012-04-13Add sigwaitinfo and sigtimedwait stubs under #if 0; a bit more kernelPhilip Guenthe
support is needed before they can be usefully enabled but I don't want to misplace this diff yet again
2012-04-12remove rfork(); ok guenther miodTheo de Raadt
2012-04-11Minor bump after my previous commit. Noticed by deraadt@.Paul Irofti
2012-04-11Add pthread barrier support.Paul Irofti
Implementation and documentation for: - pthread_barrier_init() - pthread_barrier_destroy() - pthread_barrier_wait() - pthread_barrierattr_init() - pthread_barrierattr_destroy() - pthread_barrierattr_getpshared() - pthread_barrierattr_setpshared() Currently only private barriers are supported. Okay guenther@.
2012-04-10pthread_setcanceltype() shouldn't be a cancelation pointPhilip Guenthe
ok kurt@
2012-04-06Fix typo.Joel Sing
2012-03-22Remove pthread_suspend* and related functions. This is part of theKurt Miller
rthreads major library bump from last night. okay kettenis@
2012-03-22bump majors on libc and rthreads for the additions to libc and transferPhilip Guenthe
of __tfork_thread from rthreads to libc
2012-03-22closefrom() should be a cancellation pointPhilip Guenthe
2012-03-22tfork_thread has been moved to libcPhilip Guenthe
2012-03-22Move __tfork_thread() from rthreads (libpthread) to libc so thatPhilip Guenthe
it can be used for not-strictly-threading purposes ok matthew@ kurt@
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