src-test2/lib/libpthread/thread/thr_sig.c, branch release/7.3.0_cvs

Repo copy libpthreads to libkse.

2007-10-09T14:16:39Z

This introduces the WITHOUT_LIBKSE nob, and changes WITHOUT_LIBPTHREADS to mean with neither threading libs. Approved by: re(kensmith)

Remove 3rd clause, renumber, ok per email

2007-01-12T07:26:21Z

o Remove a cruft prevented libpthread sigaction(2) wrapper to

2006-06-09T14:23:40Z

do its work for SIGINFO. Always install libpthread signal handler wrapper for SIGINFO even if user SIG_IGN's or SIG_DFL's it. SIGINFO has a special meaning for libpthread: when LIBPTHREAD_DEBUG enviroment variable defined it is used for dumping an information about threads to /tmp/. Reported by: mi Reviewed by: deischen MFC after: 2 weeks

Only catch SIGINFO (for dumping thread states) when LIBPTHREAD_DEBUG

2006-03-06T05:02:28Z

is defined in the environment. Requested by: jmg & a few others

Use a generic way to back threads out of wait queues when handling

2004-12-18T18:07:37Z

signals instead of having more intricate knowledge of thread state within signal handling. Simplify signal code because of above (by David Xu). Use macros for libpthread usage of pthread_cleanup_push() and pthread_cleanup_pop(). This removes some instances of malloc() and free() from the semaphore and pthread_once() implementations. When single threaded and forking(), make sure that the current thread's signal mask is inherited by the forked thread. Use private mutexes for libc and libpthread. Signals are deferred while threads hold private mutexes. This fix also breaks www/linuxpluginwrapper; a patch that fixes it is at http://people.freebsd.org/~deischen/kse/linuxpluginwrapper.diff Fix race condition in condition variables where handling a signal (pthread_kill() or kill()) may not see a wakeup (pthread_cond_signal() or pthread_cond_broadcast()). In collaboration with: davidxu

Save cancelflags in signal frame, this fixes a problem that

2004-11-01T10:49:34Z

a thread in pthread_cond_wait handled a signal can no longer be canceled. Reviewed by: deischen

1. Move thread list flags into new separate member, and atomically

2004-10-23T23:28:36Z

put DEAD thread on GC list, this closes a race between pthread_join and thr_cleanup. 2. Introduce a mutex to protect tcb initialization, tls allocation and deallocation code in rtld seems no lock protection or it is broken, under stress testing, memory is corrupted. Reviewed by: deischen patch partly provided by: deischen

Decrease reference count if we won't use the thread, this avoids memory

2004-10-21T03:42:24Z

leak under some cases.

Let debugger check signal, make SIGINFO works.

2004-07-13T22:52:11Z

Check pending signals, if there is signal will be unblocked by

2004-06-12T07:40:01Z

sigsuspend, thread shouldn't wait, in old code, it may be ignored. When a signal handler is invoked in sigsuspend, thread gets two different signal masks, one is in thread structure, sigprocmask() can retrieve it, another is in ucontext which is a third parameter of signal handler, the former is the result of sigsuspend mask ORed with sigaction's sa_mask and current signal, the later is the mask in thread structure before sigsuspend is called. After signal handler is called, the mask in ucontext should be copied into thread structure, and becomes CURRENT signal mask, then sigsuspend returns to user code. Reviewed by: deischen Tested by: Sean McNeil