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authorrpj <rpj>2002-01-04 04:53:36 +0000
committerrpj <rpj>2002-01-04 04:53:36 +0000
commit6922362c66bbfaa3ac9b7bb6be24368d790d28d6 (patch)
treec63857fdc9b19e00bf29a07b246e3cdb7d603fd9
parent6f68e7b50e0bb837d02dc2cb8a7bc5887534d7b8 (diff)
* attr.c (pthread_attr_setscope): Add more error
checking and actually store the scope value even though it's not really necessary. (pthread_attr_getscope): Return stored value. * implement.h (pthread_attr_t_): Add new scope element. * ANNOUNCE: Fix out of date comment next to pthread_attr_setscope in conformance section.
-rw-r--r--ANNOUNCE19
-rw-r--r--COPYING19
-rw-r--r--ChangeLog10
-rw-r--r--attr.c18
-rw-r--r--implement.h1
5 files changed, 49 insertions, 18 deletions
diff --git a/ANNOUNCE b/ANNOUNCE
index 9953dc1..a6a84c5 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -27,10 +27,20 @@ announcement for the list of contributors.
Changes since the last snapshot
-------------------------------
+platform dependence
+-------------------
+As Win9x doesn't provide one, the library now contains
+it's own InterlockedCompareExchange() routine. It is used to
+implement spinlocks and barriers, and soon may be used in mutexes.
+This routine relies on the CMPXCHG machine instruction which
+is only available in i486 or above CPUs. This library
+(from snapshot 20010712 onwards) therefore no longer runs on
+i386 platforms.
+
rwlocks
-------
Restored pthread_rwlock_wrlock() as a cancelation point as permitted
-by POSIX 1003.1j. (Was prematurely disabled in the the last snapshot.)
+by POSIX 1003.1j. (Was prematurely disabled in the last snapshot.)
Bug fixes
---------
@@ -39,6 +49,9 @@ pthread_mutexattr_getpshared, pthread_barrierattr_init,
pthread_barrierattr_getpshared, and pthread_condattr_getpshared.
- Scott McCaskill <scott@magruder.org>
+Removed potential race condition in pthread_mutex_trylock and
+pthread_mutex_lock;
+- Alexander Terekhov <TEREKHOV@de.ibm.com>
---------------------------
Known bugs in this snapshot
@@ -256,8 +269,8 @@ The following functions are implemented:
pthread_setschedparam
pthread_getconcurrency
pthread_setconcurrency
- pthread_attr_getscope (returns an error ENOSYS)
- pthread_attr_setscope (returns an error ENOSYS)
+ pthread_attr_getscope
+ pthread_attr_setscope (only supports PTHREAD_SCOPE_SYSTEM)
sched_get_priority_max (POSIX 1b)
sched_get_priority_min (POSIX 1b)
sched_rr_get_interval (POSIX 1b - returns an error ENOTSUP)
diff --git a/COPYING b/COPYING
index d54e44a..2a29a12 100644
--- a/COPYING
+++ b/COPYING
@@ -58,14 +58,17 @@ Pthreads-win32 copyrights and exception files
is covered under the following GNU Lesser General Public License
Copyrights:
- Copyright (C) 1998 Ben Elliston and Ross Johnson
- Copyright (C) 1999,2000,2001 Ross Johnson
-
- Please note that the names given in the Copyright above do not
- imply authorship of the source code. The names of all
- substantial contributors of intellectual works incorporated
- in the pthreads-win32 distribution are listed in the file
- CONTRIBUTORS.
+ Pthreads-win32 - POSIX Threads Library for Win32
+ Copyright(C) 1998 John E. Bossom
+ Copyright(C) 1999,2002 Pthreads-win32 contributors
+
+ The current list of contributors is contained
+ in the file CONTRIBUTORS included with the source
+ code distribution. The current list of CONTRIBUTORS
+ can also be seen at the following WWW location:
+ http://sources.redhat.com/pthreads-win32/contributors.html
+
+ Contact Email: rpj@ise.canberra.edu.au
These files are not covered under one of the Copyrights listed above:
diff --git a/ChangeLog b/ChangeLog
index 2f71846..e9604a3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2002-01-04 Ross Johnson <rpj@setup1.ise.canberra.edu.au>
+
+ * attr.c (pthread_attr_setscope): Add more error
+ checking and actually store the scope value even
+ though it's not really necessary.
+ (pthread_attr_getscope): Return stored value.
+ * implement.h (pthread_attr_t_): Add new scope element.
+ * ANNOUNCE: Fix out of date comment next to
+ pthread_attr_setscope in conformance section.
+
2001-12-21 Ross Johnson <rpj@special.ise.canberra.edu.au>
Contributed by - Alexander Terekhov <TEREKHOV@de.ibm.com>
diff --git a/attr.c b/attr.c
index 44976e3..21c3ddb 100644
--- a/attr.c
+++ b/attr.c
@@ -360,6 +360,7 @@ pthread_attr_init(pthread_attr_t *attr)
*/
attr_result->param.sched_priority = THREAD_PRIORITY_NORMAL;
attr_result->inheritsched = PTHREAD_EXPLICIT_SCHED;
+ attr_result->contentionscope = PTHREAD_SCOPE_SYSTEM;
attr_result->valid = PTW32_ATTR_VALID;
@@ -515,12 +516,15 @@ int
pthread_attr_setscope(pthread_attr_t *attr, int contentionscope)
{
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
- if (contentionscope != PTHREAD_SCOPE_SYSTEM)
- {
- return ENOTSUP;
- }
-
- return 0;
+ switch (contentionscope) {
+ case PTHREAD_SCOPE_SYSTEM:
+ attr->contentionscope = contentionscope;
+ return 0;
+ case PTHREAD_SCOPE_PROCESS:
+ return ENOTSUP;
+ default:
+ return EINVAL;
+ }
#else
return ENOSYS;
#endif
@@ -531,7 +535,7 @@ int
pthread_attr_getscope(const pthread_attr_t *attr, int *contentionscope)
{
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
- *contentionscope = PTHREAD_SCOPE_SYSTEM;
+ *contentionscope = attr->contentionscope;
return 0;
#else
return ENOSYS;
diff --git a/implement.h b/implement.h
index 5eb46f4..3f2690e 100644
--- a/implement.h
+++ b/implement.h
@@ -127,6 +127,7 @@ struct pthread_attr_t_ {
int detachstate;
struct sched_param param;
int inheritsched;
+ int contentionscope;
#if HAVE_SIGSET_T
sigset_t sigmask;
#endif /* HAVE_SIGSET_T */