summaryrefslogtreecommitdiff
path: root/lib/libpthread/thread/thr_write.c
Commit message (Collapse)AuthorAgeFilesLines
* Repo copy libpthreads to libkse.David E. O'Brien2007-10-091-56/+0
| | | | | | | | | This introduces the WITHOUT_LIBKSE nob, and changes WITHOUT_LIBPTHREADS to mean with neither threading libs. Approved by: re(kensmith) Notes: svn path=/head/; revision=172492
* Remove 3rd clause, renumber, ok per emailWarner Losh2007-01-121-4/+1
| | | | Notes: svn path=/head/; revision=165967
* Add compatibility symbol maps. libpthread (.so.1 and .so.2)Daniel Eischen2006-03-131-0/+3
| | | | | | | | | | | | | | used LIBTHREAD_1_0 as its version definition, but now needs to define its symbols in the same namespace used by libc. The compatibility hooks allows you to use libraries and binaries built and linked to libpthread before libc was built with symbol versioning. The shims can be removed if libpthread is given a version bump. Reviewed by: davidxu Notes: svn path=/head/; revision=156611
* Rename _thr_enter_cancellation_point to _thr_cancel_enter, renameDavid Xu2003-12-091-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | _thr_leave_cancellation_point to _thr_cancel_leave, add a parameter to _thr_cancel_leave to indicate whether cancellation point should be checked, this gives us an option to not check cancallation point if a syscall successfully returns to avoid any leaks, current I have creat(), open() and fcntl(F_DUPFD) to not check cancellation point after they sucessfully returned. Replace some members in structure kse with bit flags to same some memory. Conditionally compile THR_ASSERT to nothing if _PTHREAD_INVARIANTS is not defined. Inline some small functions in thr_cancel.c. Use __predict_false in thr_kern.c for some executed only once code. Reviewd by: deischen Notes: svn path=/head/; revision=123312
* Revamp libpthread so that it has a chance of working in an SMPDaniel Eischen2003-04-181-2/+3
| | | | | | | | | | | | | | | | | | | | | | environment. This includes support for multiple KSEs and KSEGs. The ability to create more than 1 KSE via pthread_setconcurrency() is in the works as well as support for PTHREAD_SCOPE_SYSTEM threads. Those should come shortly. There are still some known issues which davidxu and I are working on, but it'll make it easier for us by committing what we have. This library now passes all of the ACE tests that libc_r passes with the exception of one. It also seems to work OK with KDE including konqueror, kwrite, etc. I haven't been able to get mozilla to run due to lack of java plugin, so I'd be interested to see how it works with that. Reviewed by: davidxu Notes: svn path=/head/; revision=113658
* Make libpthread KSE aware.Jonathan Mini2002-09-161-93/+1
| | | | | | | | Reviewed by: deischen, julian Approved by: -arch Notes: svn path=/head/; revision=103419
* Make the changes needed for libpthread to compile in its new home.Jonathan Mini2002-09-161-1/+1
| | | | | | | | | | | The new libpthread will provide POSIX threading support using KSE. These files were previously repo-copied from src/lib/libc_r. Reviewed by: deischen Approved by: -arch Notes: svn path=/head/; revision=103388
* Remove much of the dereferencing of the fd table entries to lookDaniel Eischen2002-08-291-2/+2
| | | | | | | | | | | | | | at file flags and replace it with functions that will avoid null pointer checks. MFC to be done by archie ;-) PR: 42100 Reviewed by: archie, robert MFC after: 3 days Notes: svn path=/head/; revision=102590
* To be consistent, use the __weak_reference macro from <sys/cdefs.h>Daniel Eischen2001-04-101-1/+1
| | | | | | | | | instead of #pragma weak to create weak definitions. Suggested by: bde Notes: svn path=/head/; revision=75369
* Add weak definitions for wrapped system calls. In general:Daniel Eischen2001-01-241-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | _foo - wrapped system call foo - weak definition to _foo and for cancellation points: _foo - wrapped system call __foo - enter cancellation point, call _foo(), leave cancellation point foo - weak definition to __foo Change use of global _thread_run to call a function to get the currently running thread. Make all pthread_foo functions weak definitions to _pthread_foo, where _pthread_foo is the implementation. This allows an application to provide its own pthread functions. Provide slightly different versions of pthread_mutex_lock and pthread_mutex_init so that we can tell the difference between a libc mutex and an application mutex. Threads holding mutexes internal to libc should never be allowed to exit, call signal handlers, or cancel. Approved by: -arch Notes: svn path=/head/; revision=71581
* Implement zero system call thread switching. Performance ofDaniel Eischen2000-10-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | thread switches should be on par with that under scheduler activations. o Timing is achieved through the use of a fixed interval timer (ITIMER_PROF) to count scheduling ticks instead of retrieving the time-of-day upon every thread switch and calculating elapsed real time. o Polling for I/O readiness is performed once for each scheduling tick instead of every thread switch. o The non-signal saving/restoring versions of setjmp/longjmp are used to save and restore thread contexts. This may allow the removal of _THREAD_SAFE macros from setjmp() and longjmp() - needs more investigation. Change signal handling so that signals are handled in the context of the thread that is receiving the signal. When signals are dispatched to a thread, a special signal handling frame is created on top of the target threads stack. The frame contains the threads saved state information and a new context in which the thread can run. The applications signal handler is invoked through a wrapper routine that knows how to restore the threads saved state and unwind to previous frames. Fix interruption of threads due to signals. Some states were being improperly interrupted while other states were not being interrupted. This should fix several PRs. Signal handlers, which are invoked as a result of a process signal (not by pthread_kill()), are now called with the code (or siginfo_t if SA_SIGINFO was set in sa_flags) and sigcontext_t as received from the process signal handler. Modify the search for a thread to which a signal is delivered. The search algorithm is now: o First thread found in sigwait() with signal in wait mask. o First thread found sigsuspend()'d on the signal. o Current thread if signal is unmasked. o First thread found with signal unmasked. Collapse machine dependent support into macros defined in pthread_private.h. These should probably eventually be moved into separate MD files. Change the range of settable priorities to be compliant with POSIX (0-31). The threads library uses higher priorities internally for real-time threads (not yet implemented) and threads executing signal handlers. Real-time threads and threads running signal handlers add 64 and 32, respectively, to a threads base priority. Some other small changes and cleanups. PR: 17757 18559 21943 Reviewed by: jasone Notes: svn path=/head/; revision=67097
* Simplify sytem call renaming. Instead of _foo() <-- _libc_foo <-- foo(),Jason Evans2000-01-271-8/+13
| | | | | | | | | | | | | | | | | | | | just use _foo() <-- foo(). In the case of a libpthread that doesn't do call conversion (such as linuxthreads and our upcoming libpthread), this is adequate. In the case of libc_r, we still need three names, which are now _thread_sys_foo() <-- _foo() <-- foo(). Convert all internal libc usage of: aio_suspend(), close(), fsync(), msync(), nanosleep(), open(), fcntl(), read(), and write() to _foo() instead of foo(). Remove all internal libc usage of: creat(), pause(), sleep(), system(), tcdrain(), wait(), and waitpid(). Make thread cancellation fully POSIX-compliant. Suggested by: deischen Notes: svn path=/head/; revision=56698
* Track libc's three-tier symbol naming. libc_r must currently implementJason Evans2000-01-121-1/+3
| | | | | | | | the _libc_*() entry points and add *() weak aliases. This will all change for the better when libc_r becomes libpthread. Notes: svn path=/head/; revision=55838
* Fix problems with cancellation while in critical regions.Daniel Eischen1999-12-171-2/+2
| | | | | | | | | | | | | | o Cancellation flags were not getting properly set/cleared. o Loops waiting for internal locks were not being exited correctly by a cancelled thread. o Minor spelling (cancelation -> cancellation) and formatting corrections (missing tab). Found by: tg Reviewed by: jasone Notes: svn path=/head/; revision=54708
* add pthread_cancel, obtained from OpenBSD.Alfred Perlstein1999-11-281-2/+7
| | | | | | | | | | | | | | | | | eischen (Daniel Eischen) added wrappers to protect against cancled threads orphaning internal resources. the cancelability code is still a bit fuzzy but works for test programs of my own, OpenBSD's and some examples from ORA's books. add readdir_r to both libc and libc_r add some 'const' attributes to function parameters Reviewed by: eischen, jasone Notes: svn path=/head/; revision=53812
* $Id$ -> $FreeBSD$Peter Wemm1999-08-281-1/+1
| | | | Notes: svn path=/head/; revision=50476
* Add RCS IDs to those files without them.Daniel Eischen1999-08-051-2/+2
| | | | | | | | | | Fix copyrights (s/REGENTS/AUTHOR). Suggested by: tg Approved by: jb Notes: svn path=/head/; revision=49439
* Removed unused variables.Alexander Langer1998-09-071-2/+1
| | | | Notes: svn path=/head/; revision=38925
* If a short write, only loop if no error.John Birrell1998-06-141-2/+2
| | | | Notes: svn path=/head/; revision=36965
* Check the access mode in the flags before waiting on a read or a writeJohn Birrell1998-06-101-1/+13
| | | | | | | | that might never be possible if the file was not opened in the corrent mode. This prevents a hang for bad programs. Why do people code like that? Notes: svn path=/head/; revision=36877
* Implement compile time debug support instead of tracking file name andJohn Birrell1998-06-091-4/+7
| | | | | | | | | | line number every time a file descriptor is locked. This looks like a big change but it isn't. It should reduce the size of libc_r and make it run slightly faster. Notes: svn path=/head/; revision=36830
* When doing a blocking write, keep looping until all the bytes areJohn Birrell1998-05-251-10/+48
| | | | | | | | | | written without returning to the caller. This only occurs on pipes where either the number of bytes written is greater than the pipe buffer or if there is insufficient space in the pipe buffer because the reader is reading slower than the writer is writing. Notes: svn path=/head/; revision=36382
* Change signal model to match POSIX (i.e. one set of signal handlersJohn Birrell1998-04-291-4/+3
| | | | | | | | | | | | | | | | | | | | | | | for the process, not a separate set for each thread). By default, the process now only has signal handlers installed for SIGVTALRM, SIGINFO and SIGCHLD. The thread kernel signal handler is installed for other signals on demand. This means that SIG_IGN and SIG_DFL processing is now left to the kernel, not the thread kernel. Change the signal dispatch to no longer use a signal thread, and call the signal handler using the stack of the thread that has the signal pending. Change the atomic lock method to use test-and-set asm code with a yield if blocked. This introduces separate locks for each type of object instead of blocking signals to prevent a context switch. It was this blocking of signals that caused the performance degradation the people have noted. This is a *big* change! Notes: svn path=/head/; revision=35509
* Fixes from Jeremy Allison and Terry Lambert for pthreads:Julian Elischer1998-02-131-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | specifically: uthread_accept.c: Fix for inherited socket not getting correct entry in pthread flags. uthread_create.c: Fix to allow pthread_t pointer return to be null if caller doesn't care about return. uthread_fd.c: Fix for return codes to be placed into correct errno. uthread_init.c: Changes to make gcc-2.8 thread aware for exception stack frames (WARNING: This is #ifdef'ed out by default and is different from the Cygnus egcs fix). uthread_ioctl.c: Fix for blocking/non-blocking ioctl. uthread_kern.c: Signal handling fixes (only one case left to fix, that of an externally sent SIGSEGV and friends - a fairly unusual case). uthread_write.c: Fix for lock of fd - ask for write lock, not read/write. uthread_writev.c: Fix for lock of fd - ask for write lock, not read/write. Pthreads now works well enough to run the LDAP and ACAPD(with the gcc 2.8 fix) sample implementations. Notes: svn path=/head/; revision=33292
* Add parentheses to make blocking mode work.John Birrell1997-04-011-1/+3
| | | | Notes: svn path=/head/; revision=24518
* Submitted by: John BirrellJulian Elischer1997-02-051-15/+22
| | | | | | | uthreads update from the author. Notes: svn path=/head/; revision=22315
* Reviewed by: julianJulian Elischer1996-01-221-0/+74
Submitted by: john birrel One version of the pthreads library another will follow with differnt actions under some cases.. not QUITE complete Notes: svn path=/head/; revision=13546
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-04 04:28:11 +0000