1998-04-20 18:00 Ulrich Drepper <drepper@cygnus.com> * libc.map: Add __dgettext to GLIBC_2.0 and __libc_longjmp, and __libc_siglongjmp to GLIBC_2.1. * elf/dl-minimal.c (__assert_perror_fail): Don't use strerror, use __strerror_r. * iconv/Makefile: Don't run tests now. * iconv/iconv_prog.c (process_block): If loop is repeated, call iconv with correct output buffer. Major rewrite of the low-level gconv functionality. * iconv/gconv.c: Rewritten. * iconv/gconv.h: Likewise. * iconv/gconv_builtin.c: Likewise. * iconv/gconv_builtin.h: Likewise. * iconv/gconv_conf.c: Likewise. * iconv/gconv_int.h: Likewise. * iconv/gconv_open.c: Likewise. * iconv/gconv_simple.c: Likewise. * iconv/iconv.c: Likewise. * iconvdata/8bit-gap.c: Likewise. * iconvdata/8bit-generic.c: Likewise. * iconvdata/Makefile: Likewise. * iconvdata/big5.c: Likewise. * iconvdata/cns11643.c: Likewise. * iconvdata/cns11643.h: Likewise. * iconvdata/cns11643l1.c: Likewise. * iconvdata/cns11643l1.h: Likewise. * iconvdata/ebcdic-at-de-a.c: Likewise. * iconvdata/ebcdic-at-de.c: Likewise. * iconvdata/ebcdic-ca-fr.c: Likewise. * iconvdata/euccn.c: Likewise. * iconvdata/eucjp.c: Likewise. * iconvdata/euckr.c: Likewise. * iconvdata/euctw.c: Likewise. * iconvdata/gb2312.c: Likewise. * iconvdata/gb2312.h: Likewise. * iconvdata/hp-roman8.c: Likewise. * iconvdata/iso646.c: Likewise. * iconvdata/iso6937.c: Likewise. * iconvdata/iso8859-1.c: Likewise. * iconvdata/iso8859-10.c: Likewise. * iconvdata/iso8859-2.c: Likewise. * iconvdata/iso8859-3.c: Likewise. * iconvdata/iso8859-4.c: Likewise. * iconvdata/iso8859-5.c: Likewise. * iconvdata/iso8859-6.c: Likewise. * iconvdata/iso8859-7.c: Likewise. * iconvdata/iso8859-8.c: Likewise. * iconvdata/iso8859-9.c: Likewise. * iconvdata/jis0201.c: Likewise. * iconvdata/jis0201.h: Likewise. * iconvdata/jis0208.c: Likewise. * iconvdata/jis0208.h: Likewise. * iconvdata/jis0212.c: Likewise. * iconvdata/jis0212.h: Likewise. * iconvdata/johab.c: Likewise. * iconvdata/koi-8.c: Likewise. * iconvdata/koi8-r.c: Likewise. * iconvdata/ksc5601.c: Likewise. * iconvdata/ksc5601.h: Likewise. * iconvdata/latin-greek-1.c: Likewise. * iconvdata/latin-greek.c: Likewise. * iconvdata/run-iconv-test.sh: Likewise. * iconvdata/sjis.c: Likewise. * iconvdata/t61.c: Likewise. * iconvdata/uhc.c: Likewise. * wcsmbs/btowc.c: Likewise. * wcsmbs/mbrtowc.c: Likewise. * wcsmbs/mbsnrtowcs.c: Likewise. * wcsmbs/mbsrtowcs.c: Likewise. * wcsmbs/wcrtomb.c: Likewise. * wcsmbs/wcsmbsload.c: Likewise. * wcsmbs/wcsnrtombs.c: Likewise. * wcsmbs/wcsrtombs.c: Likewise. * wcsmbs/wctob.c: Likewise. * iconv/loop.c: New file. * iconv/skeleton.c: New file. * stdlib/mblen.c: Handle empty input string correctly. * stdlib/mbtowc.c: Likewise. * posix/getopt.c: Various cleanups. * sysdeps/arm/bits/setjmp.h: Add copyright text. * sysdeps/i386/bits/setjmp.h: Likewise. * sysdeps/m68k/bits/setjmp.h: Likewise. * sysdeps/powerpc/bits/setjmp.h: Likewise. * sysdeps/sparc/sparc32/bits/setjmp.h: Likewise. * sysdeps/generic/longjmp.c: Rename function to __libc_siglongjmp and make longjmp weak alias. 1998-04-18 20:29 Philip Blundell <Philip.Blundell@pobox.com> * iconv/Makefile (routines): Only include gconv_dl if building for an ELF system - dynamic linking is not available on a.out. (CFLAGS-gconv_conf.c): Define STATIC_GCONV if omitting gconv_dl due to above check. * iconv/gconv_db.c: If STATIC_GCONV defined, don't try to call routines from gconv_dl. 1998-04-17 Gordon Matzigkeit <gord@profitpress.com> * csu/init.c (_IO_stdin_used): Protect with USE_IN_LIBIO so that we can compile without libio. 1998-04-20 16:28 Ulrich Drepper <drepper@cygnus.com> * sysdeps/mach/hurd/Subdirs: Remove login. 1998-04-11 Gordon Matzigkeit <gord@profitpress.com> * db2/compat.h: Include <errno.h>, to make sure we get the definition of EFTYPE before we define it ourselves. 1998-04-10 Gordon Matzigkeit <gord@profitpress.com> * sysdeps/generic/bits/socket.h: Protect against multiple inclusion. * sysdeps/mach/hurd/bits/ioctls.h: Likewise. Fix typo to allow inclusion from sys/ioctl.h again. 1998-04-16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * iconvdata/*.[ch]: Clean up namespace. Optimize character lookup. 1998-04-16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * libc.map: Export __strerror_r. Remove _strerror_internal. 1998-04-16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/generic/strcasestr.c: Undefine strcasestr, not strstr. Also undefine __strcasestr. 1998-04-16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * posix/regex.c: Rename __re_max_failures back to re_max_failures, aliases do not work with global variables due to copy relocations. 1998-04-20 15:12 Ulrich Drepper <drepper@cygnus.com> * manual/creature.texi: Fix type. Patch by Andreas Schwab. 1998-04-20 13:47 Ulrich Drepper <drepper@cygnus.com> * signal/sighold.c: Include stddef.h for NULL definition. * signal/sigrelse.c: Likewise. * sysdeps/posix/sigignore.c: Likewise. * sysdeps/posix/sigset.c: Likewise. * sysdeps/posix/waitid.c: Likewise. * sysdeps/unix/sysv/linux/rt_sigsuspend.c: Likewise. * sysdeps/unix/sysv/linux/rt_sigtimedwait.c: Likewise. * sysdeps/unix/sysv/linux/sigwaitinfo.c: Likewise. * wcsmbs/mbsrtowcs.c: Include stdlib.h for MB_CUR_MAX. Patch by Franz Sirl <Franz.Sirl-kernel@lauterbach.com>. 1998-04-13 Mark Kettenis <kettenis@phys.uva.nl> * login/Makefile (headers): Remove utmpx.h and bits/utmpx.h. * login/getutent.c (getutxent): Remove alias. * login/getutent_r.c (setutxent, pututxline, endutxent): Remove aliases. * login/getutid.c (getutxid): Remove alias. * login/getutline.c (getutxline): Remove alias. * login/utmp.h: Add prototypes for __updwtmp, __getutent, __getutid, __getutline and __pututline. * login/utmpx.h: Moved to ... * sysdeps/gnu/utmpx.h: ... here. [__USE_GNU]: Define UTMPX_FILE, UTMPX_FILENAME, WTMPX_FILE and WTMPX_FILENAME, declare utmpxname and updwtmpx. * login/updwtmp.c: Moved to ... * sysdeps/generic/updwtmp.c: ... here. (updwtmp): Generalized by allowing file name transformation. * sysdeps/gnu/updwtmp.c: New file. Use generic implementation with additional file name transformation. * sysdeps/unix/sysv/linux/updwtmp.c: Likewise. * login/utmp_file.c: Moved to ... * sysdeps/generic/utmp_file.c: ... here. (setutent_file): Generalized by allowing file name transformation. Do not print error message. Library functions should not print them. Reported by Jim Meyering. * sysdeps/gnu/utmp_file.c: New file. Use generic implementation with additional file name transformation. * sysdeps/unix/sysv/linux/utmp_file.c: Likewise. * sysdeps/gnu/Makefile [$(subdir)=login] (sysdep_routines): Add setutxent, getutxent, endutxent, getutxid, getutxid, getutxline, pututxline, utmpxname and updwtmpx. (sysdep_headers): Add utmpx.h and bits/utmpx.h. * sysdeps/gnu/bits/utmpx.h [__USE_GNU] Include paths.h. (_PATH_UTMPX): Define to _PATH_UTMP. (_PATH_WTMPX): Define to _PATH_WTMPX. (RUN_LVL): Define only if __USE_GNU. (ACCOUNTING): Define if __USE_GNU. * sysdeps/gnu/setutxent.c: New file. * sysdeps/gnu/getutxent.c: New file. * sysdeps/gnu/endutxent.c: New file. * sysdeps/gnu/getutxid.c: New file. * sysdeps/gnu/getutxline.c: New file. * sysdeps/gnu/pututxline.c: New file. * sysdeps/gnu/utmpxname.c: New file. * sysdeps/gnu/updwtmpx.c: New file. * sysdeps/unix/sysv/linux/paths.h (_PATH_UTMP_DB): Remove. * sysdeps/generic/bits/utmpx.h: Remove. 1998-04-20 Ulrich Drepper <drepper@cygnus.com> * posix/wordexp-test.c (main): Initialize ifs element of ts for ~root test. 1998-04-17 07:53 H.J. Lu <hjl@gnu.org> * sysdeps/unix/sysv/linux/i386/s_pread64.S: Fix a typo. 1998-04-17 11:32 Ulrich Drepper <drepper@cygnus.com> * libio/oldfileops.c (_IO_old_file_seekoff): Define temporary st variable using _G_stat64. * libio/fileops.c: Remove macro definition of fstat, it is in the global header. Reported by Thorsten Kukuk <kukuk@weber.uni-paderborn.de>. 1998-04-17 Philip Blundell <pb@nexus.co.uk> * sysdeps/arm/strlen.S: New file, based on code by Matthew Wilcox <willy@odie.barnet.ac.uk>. 1998-04-16 Philip Blundell <Philip.Blundell@pobox.com> * inet/netinet/in.h (IN6_IS_ADDR_MC_NODELOCAL): New macro, required by IPv6 Basic API. (IN6_IS_ADDR_MC_LINKLOCAL): Likewise. (IN6_IS_ADDR_MC_SITELOCAL): Likewise. (IN6_IS_ADDR_MC_ORGLOCAL): Likewise. (IN6_IS_ADDR_MC_GLOBAL): Likewise. |
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ChangeLog | ||
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LICENSE | ||
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README | ||
README.Xfree3.2 | ||
attr.c | ||
cancel.c | ||
condvar.c | ||
configure | ||
errno.c | ||
internals.h | ||
join.c | ||
libpthread.map | ||
lockfile.c | ||
manager.c | ||
mutex.c | ||
ptfork.c | ||
pthread.c | ||
ptlongjmp.c | ||
queue.h | ||
restart.h | ||
rwlock.c | ||
semaphore.c | ||
semaphore.h | ||
shlib-versions | ||
signals.c | ||
specific.c | ||
spinlock.c | ||
spinlock.h | ||
weaks.c | ||
wrapsyscall.c |
README
Linuxthreads - POSIX 1003.1c kernel threads for Linux Copyright 1996, 1997 Xavier Leroy (Xavier.Leroy@inria.fr) DESCRIPTION: This is release 0.7 (late beta) of LinuxThreads, a BiCapitalized implementation of the Posix 1003.1c "pthread" interface for Linux. LinuxThreads provides kernel-level threads: each thread is a separate Unix process, sharing its address space with the other threads through the new system call clone(). Scheduling between threads is handled by the kernel scheduler, just like scheduling between Unix processes. REQUIREMENTS: - Linux version 2.0 and up (requires the new clone() system call and the new realtime scheduler). - For Intel platforms: libc 5.2.18 or later is required. 5.2.18 or 5.4.12 or later are recommended; 5.3.12 and 5.4.7 have problems (see the FAQ.html file for more info). - Also supports glibc 2 (a.k.a. libc 6), which actually comes with a specially-adapted version of this library. - Currently supports Intel, Alpha, Sparc, Motorola 68k, ARM and MIPS platforms. - Multiprocessors are supported. INSTALLATION: - Edit the Makefile, set the variables in the "Configuration" section. - Do "make". - Do "make install". USING LINUXTHREADS: gcc -D_REENTRANT ... -lpthread A complete set of manual pages is included. Also see the subdirectory Examples/ for some sample programs. STATUS: - All functions in the Posix 1003.1c base interface implemented. Also supports priority scheduling. - For users of libc 5 (H.J.Lu's libc), a number of C library functions are reimplemented or wrapped to make them thread-safe, including: * malloc functions * stdio functions (define _REENTRANT before including <stdio.h>) * per-thread errno variable (define _REENTRANT before including <errno.h>) * directory reading functions (opendir(), etc) * sleep() * gmtime(), localtime() New library functions provided: * flockfile(), funlockfile(), ftrylockfile() * reentrant versions of network database functions (gethostbyname_r(), etc) and password functions (getpwnam_r(), etc). - libc 6 (glibc 2) provides much better thread support than libc 5, and comes with a specially-adapted version of LinuxThreads. For serious multithreaded programming, you should consider switching to glibc 2. It is available from ftp.gnu.org:/pub/gnu and its mirrors. WARNING: Many existing libraries are not compatible with LinuxThreads, either because they are not inherently thread-safe, or because they have not been compiled with the -D_REENTRANT. For more info, see the FAQ.html file in this directory. A prime example of the latter is Xlib. If you link it with LinuxThreads, you'll probably get an "unknown 0 error" very early. This is just a consequence of the Xlib binaries using the global variable "errno" to fetch error codes, while LinuxThreads and the C library use the per-thread "errno" location. See the file README.Xfree3.3 for info on how to compile the Xfree 3.3 libraries to make them compatible with LinuxThreads. KNOWN BUGS AND LIMITATIONS: - Threads share pretty much everything they should share according to the standard: memory space, file descriptors, signal handlers, current working directory, etc. One thing that they do not share is their pid's and parent pid's. According to the standard, they should have the same, but that's one thing we cannot achieve in this implementation (until the CLONE_PID flag to clone() becomes usable). - The current implementation uses the two signals SIGUSR1 and SIGUSR2, so user-level code cannot employ them. Ideally, there should be two signals reserved for this library. One signal is used for restarting threads blocked on mutexes or conditions; the other is for thread cancellation. *** This is not anymore true when the application runs on a kernel newer than approximately 2.1.60. - The stacks for the threads are allocated high in the memory space, below the stack of the initial process, and spaced 2M apart. Stacks are allocated with the "grow on demand" flag, so they don't use much virtual space initially (4k, currently), but can grow up to 2M if needed. Reserving such a large address space for each thread means that, on a 32-bit architecture, no more than about 1000 threads can coexist (assuming a 2Gb address space for user processes), but this is reasonable, since each thread uses up one entry in the kernel's process table, which is usually limited to 512 processes. Another potential problem of the "grow on demand" scheme is that nothing prevents the user from mmap'ing something in the 2M address window reserved for a thread stack, possibly causing later extensions of that stack to fail. Mapping at fixed addresses should be avoided when using this library. - Signal handling does not fully conform to the Posix standard, due to the fact that threads are here distinct processes that can be sent signals individually, so there's no notion of sending a signal to "the" process (the collection of all threads). More precisely, here is a summary of the standard requirements and how they are met by the implementation: 1- Synchronous signals (generated by the thread execution, e.g. SIGFPE) are delivered to the thread that raised them. (OK.) 2- A fatal asynchronous signal terminates all threads in the process. (OK. The thread manager notices when a thread dies on a signal and kills all other threads with the same signal.) 3- An asynchronous signal will be delivered to one of the threads of the program which does not block the signal (it is unspecified which). (No, the signal is delivered to the thread it's been sent to, based on the pid of the thread. If that thread is currently blocking the signal, the signal remains pending.) 4- The signal will be delivered to at most one thread. (OK, except for signals generated from the terminal or sent to the process group, which will be delivered to all threads.) - The current implementation of the MIPS support assumes a MIPS ISA II processor or better. These processors support atomic operations by ll/sc instructions. Older R2000/R3000 series processors are not supported yet; support for these will have higher overhead. - The current implementation of the ARM support assumes that the SWP (atomic swap register with memory) instruction is available. This is the case for all processors except for the ARM1 and ARM2. On StrongARM, the SWP instruction does not bypass the cache, so multi-processor support will be more troublesome.