diff options
author | Ulrich Drepper <drepper@redhat.com> | 1997-12-01 17:16:22 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1997-12-01 17:16:22 +0000 |
commit | 04be94a87d0a74c022490db7f4f926253f0d69d3 (patch) | |
tree | aed47130338b81c2af8e92849ed1429596adeca3 /db2/mutex | |
parent | f4017d205738b913f1002433cde5d4b4e93fbd81 (diff) | |
download | glibc-04be94a87d0a74c022490db7f4f926253f0d69d3.zip glibc-04be94a87d0a74c022490db7f4f926253f0d69d3.tar.gz glibc-04be94a87d0a74c022490db7f4f926253f0d69d3.tar.bz2 |
Update.cvs/libc-ud-971201
1997-12-01 17:27 Ulrich Drepper <drepper@cygnus.com>
* Makefile (subdirs): Add iconvdata and localedata.
* iconv/gconv.h: Define UNKNOWN_10646_CHAR as error value.
* iconv/gconv_conf.c (read_conf_file): Little optimization.
* iconvdata/8bit-gap.c: New file.
* iconvdata/8bit-generic.c: Renamed from ...
* iconvdata/iso8859-generic.c: ...this.
* iconvdata/configure: Removed.
* iconvdata/Makefile: Add new modules and better rules.
* iconvdata/iso6937.c: Minor bug fixes.
* iconvdata/iso8859-1.c: Likewise.
* iconvdata/t61.c: Likewise.
* iconvdata/iso8859-2.c: Change to use 8bit-generic.c.
Minor bug fixes.
* 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/iso8859-10.c: Likewise.
* iconvdata/ebcdic-at-de-a.c: New file.
* iconvdata/ebcdic-at-de.c: New file.
* iconvdata/ebcdic-ca-fr.c: New file.
* iconvdata/hp-roman8.c: New file.
* iconvdata/koi-8.c: New file.
* iconvdata/koi8-r.c: New file.
* iconvdata/koi8-h.c: New file.
* iconvdata/latin-greek-1.c: New file.
* iconvdata/latin-greek-1.h: New file.
* iconvdata/latin-greek.c: New file.
* iconvdata/latin-greek.h: New file.
* iconvdata/jis0201.c: New file.
* iconvdata/jis0201.h: New file.
* iconvdata/jis0208.c: New file.
* iconvdata/jis0208.h: New file.
* iconvdata/jis0212.c: New file.
* iconvdata/jis0212.h: New file.
* iconvdata/sjis.c: New file.
* iconvdata/gap.pl: New file. Script to generate table header.
* iconvdata/gaptab.pl: New file.
* iconvdata/gconv-modules: Add info about new modules.
* locale/programs/charmap.c: Also examine alias names given in charmap
files.
* localedata/*: Add to here from add-on. We need the information
to generate tables for iconv.
Update from db-2.3.14.
* db2/Makefile: Updated.
* db2/config.h: Likewise.
* db2/db.h: Likewise.
* db2/db_int.h: Likewise.
* db2/btree/bt_cursor.c: Likewise.
* db2/btree/bt_delete.c: Likewise.
* db2/btree/bt_put.c: Likewise.
* db2/btree/bt_search.c: Likewise.
* db2/btree/bt_split.c: Likewise.
* db2/btree/btree_auto.c: Likewise.
* db2/common/db_appinit.c: Likewise.
* db2/common/db_apprec.c: Likewise.
* db2/common/db_err.c: Likewise.
* db2/common/db_region.c: Likewise.
* db2/db/db_auto.c: Likewise.
* db2/db/db_dispatch.c: Likewise.
* db2/db/db_ret.c: Likewise.
* db2/dbm/dbm.c: Likewise.
* db2/hash/hash_auto.c: Likewise.
* db2/include/btree_ext.h: Likewise.
* db2/include/common_ext.h: Likewise.
* db2/include/db.h.src: Likewise.
* db2/include/db_cxx.h: Likewise.
* db2/include/db_ext.h: Likewise.
* db2/include/db_int.h.src: Likewise.
* db2/include/lock.h: Likewise.
* db2/include/log.h: Likewise.
* db2/include/mp.h: Likewise.
* db2/include/mp_ext.h: Likewise.
* db2/include/os_ext.h: Likewise.
* db2/include/os_func.h: Likewise.
* db2/lock/lock.c: Likewise.
* db2/lock/lock_deadlock.c: Likewise.
* db2/log/log.c: Likewise.
* db2/log/log_archive.c: Likewise.
* db2/log/log_auto.c: Likewise.
* db2/log/log_get.c: Likewise.
* db2/log/log_put.c: Likewise.
* db2/mp/mp_bh.c: Likewise.
* db2/mp/mp_fget.c: Likewise.
* db2/mp/mp_fopen.c: Likewise.
* db2/mp/mp_fput.c: Likewise.
* db2/mp/mp_fset.c: Likewise.
* db2/mp/mp_open.c: Likewise.
* db2/mp/mp_pr.c: Likewise.
* db2/mp/mp_region.c: Likewise.
* db2/mp/mp_sync.c: Likewise.
* db2/mutex/README: Likewise.
* db2/mutex/mutex.c: Likewise.
* db2/os/os_open.c: Likewise.
* db2/os/os_func.c: Removed.
* db2/os/os_config.c: New file.
* db2/os/os_spin.c: New file.
* db2/txn/txn.c: Likewise.
* db2/txn/txn_auto.c: Likewise.
1997-11-30 06:01 Ulrich Drepper <drepper@cygnus.com>
* posix/sys/wait.h (__WAIT_INT): Don't use complex version with
__typeof for C++ since this fails for class members.
Reported by Neal Becker <neal@ctd.comsat.com>.
1997-11-28 11:21 Zack Weinberg <zack@rabi.phys.columbia.edu>
* configure.in: Check for a working makeinfo (3.11 or better).
* config.make.in: Add MAKEINFO to be substituted.
* manual/Makefile: Don't update info if makeinfo is too old.
1997-11-30 05:21 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/alpha/setjmp.S: Define _ASM and _SETJMP_H to get definitions.
* sysdeps/alpha/__longjmp.S: Likewise.
* sysdeps/unix/sysv/linux/alpha/kernel_termios.h: Include <termios.h>
not <bits/termios.h>.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Define syscall as
__llseek and make llseek and lseek64 weak aliases.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
Patches by a sun <asun@zoology.washington.edu>.
1997-11-29 19:19 Zack Weinberg <zack@rabi.phys.columbia.edu>
* misc/sys/syslog.h: Delete KERNEL preprocessor conditional.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h: Likewise.
* misc/sys/syslog.h: Clean up BSD header.
1997-11-29 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* sysdeps/unix/sysv/linux/bits/in.h: Add changes from Linux 2.1.67.
* sysdeps/libm-ieee754/s_ctan.c (__ctan): Raise invalid exception
for ctan(+-inf,x).
* sysdeps/libm-ieee754/s_ctanl.c (__ctanl): Likewise.
* sysdeps/libm-ieee754/s_ctanf.c (__ctanf): Likewise.
* math/libm-test.c (csqrt_test): Add tests for cabs, carg, ctan,
csqrt (-1), ctanh(i*pi/4).
1997-11-26 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/generic/bits/confname.h: Fix comma in enumerator.
1997-11-28 13:28 Philip Blundell <Philip.Blundell@pobox.com>
* sysdeps/unix/sysv/linux/net/if_arp.h: Add more ARPHRD_ constants.
1997-11-26 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* wcsmbs/wcrtomb.c (__wcrtomb): Remove unused variable fake.
1997-11-26 21:28 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/posix/getcwd.c (GETCWD_STORYGE_CLASS): Remove definition
and use. Define GETCWD_RETURN_TYPE instead and use it.
* sysdeps/unix/sysv/linux/getcwd.c: Define GETCWD_RETURN_TYPE instead
of GETCWD_STORYGE_CLASS and put the return type and the
`internal_function' in the right order for gcc 2.7.2.
1997-11-26 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* sysdeps/unix/sysv/linux/sys/module.h: Remove file. It's
incompatible with Linux 2.1.x. Packages using modules
(e.g. modutils) should/do provide their own version. Suggested by
Richard Henderson.
* sysdeps/unix/sysv/linux/Dist: Remove sys/module.h.
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers)
[$(subdir)=socket]: Remove sys/module.h.
* libio/stdio.h: Correct comment of sys_nerr/sys_errlist.
Diffstat (limited to 'db2/mutex')
-rw-r--r-- | db2/mutex/README | 8 | ||||
-rw-r--r-- | db2/mutex/mutex.c | 16 |
2 files changed, 8 insertions, 16 deletions
diff --git a/db2/mutex/README b/db2/mutex/README index 30d6b6a..fceeef7 100644 --- a/db2/mutex/README +++ b/db2/mutex/README @@ -1,4 +1,4 @@ -# @(#)README 10.1 (Sleepycat) 4/12/97 +# @(#)README 10.2 (Sleepycat) 11/25/97 Resource locking routines: lock based on a db_mutex_t. All this gunk (including trying to make assembly code portable), is necessary because @@ -11,9 +11,9 @@ information. If HAVE_SPINLOCKS is defined (i.e. we know how to do test-and-sets for this compiler/architecture combination), we try and lock the resource tsl -TSL_DEFAULT_SPINS times. If we can't acquire the lock that way, we use -a system call to sleep for 10ms, 20ms, 40ms, etc. (The time is bounded -at 1 second, just in case.) Using the timer backoff means that there are +__db_tsl_spins times. If we can't acquire the lock that way, we use a +system call to sleep for 10ms, 20ms, 40ms, etc. (The time is bounded at +1 second, just in case.) Using the timer backoff means that there are two assumptions: that locks are held for brief periods (never over system calls or I/O) and that locks are not hotly contested. diff --git a/db2/mutex/mutex.c b/db2/mutex/mutex.c index 7c8ea6e..6e87c5f 100644 --- a/db2/mutex/mutex.c +++ b/db2/mutex/mutex.c @@ -8,7 +8,7 @@ #include "config.h" #ifndef lint -static const char sccsid[] = "@(#)mutex.c 10.28 (Sleepycat) 10/31/97"; +static const char sccsid[] = "@(#)mutex.c 10.29 (Sleepycat) 11/25/97"; #endif /* not lint */ #ifndef NO_SYSTEM_INCLUDES @@ -101,12 +101,6 @@ static const char sccsid[] = "@(#)mutex.c 10.28 (Sleepycat) 10/31/97"; #endif /* HAVE_SPINLOCKS */ -#ifdef MORE_THAN_ONE_PROCESSOR -#define TSL_DEFAULT_SPINS 5 /* Default spins before block. */ -#else -#define TSL_DEFAULT_SPINS 1 /* Default spins before block. */ -#endif - /* * __db_mutex_init -- * Initialize a DB mutex structure. @@ -130,6 +124,7 @@ __db_mutex_init(mp, off) #ifdef HAVE_SPINLOCKS TSL_INIT(&mp->tsl_resource); + mp->spins = __os_spin(); #else mp->off = off; #endif @@ -155,11 +150,8 @@ __db_mutex_lock(mp, fd) int nspins; for (usecs = MS(10);;) { - /* - * Try and acquire the uncontested resource lock for - * TSL_DEFAULT_SPINS. - */ - for (nspins = TSL_DEFAULT_SPINS; nspins > 0; --nspins) + /* Try and acquire the uncontested resource lock for N spins. */ + for (nspins = mp->spins; nspins > 0; --nspins) if (TSL_SET(&mp->tsl_resource)) { #ifdef DEBUG if (mp->pid != 0) { |