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After finding the right thread library (containing e.g. pthread_create) we

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2000-03-23  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* configure.in: After finding the right thread library (containing
	e.g. pthread_create) we now search for the right realtime library
	(containing e.g. sched_get_priority_max). Makes the output of the
	thread related libraries correct.

	* gtimer.c (g_usleep): The current implementation of g_usleep
	(simply calling select) doesn't work reliable for multi-threaded
	programs on some platforms (bad omen for the main loop....), so I
	changed the implementation for thread-using programs to wait for a
	GCond for the specified amount of time (NB: sleep and usleep are
	not MT-safe in general, because they often use signals).
This commit is contained in:
Sebastian Wilhelmi 2000-03-23 16:23:50 +00:00 committed by Sebastian Wilhelmi
parent dd781b91ec
commit ac4abbba3e
11 changed files with 210 additions and 32 deletions
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14
ChangeLog
View File

@ -1,3 +1,17 @@
2000-03-23 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* configure.in: After finding the right thread library (containing
e.g. pthread_create) we now search for the right realtime library
(containing e.g. sched_get_priority_max). Makes the output of the
thread related libraries correct.
* gtimer.c (g_usleep): The current implementation of g_usleep
(simply calling select) doesn't work reliable for multi-threaded
programs on some platforms (bad omen for the main loop....), so I
changed the implementation for thread-using programs to wait for a
GCond for the specified amount of time (NB: sleep and usleep are
not MT-safe in general, because they often use signals).
Wed Mar 22 16:49:57 2000 Owen Taylor <otaylor@redhat.com>
* gmem.c (g_mem_chunk_area_compare): Fix indentation.

14
ChangeLog.pre-2-0
View File

@ -1,3 +1,17 @@
2000-03-23 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* configure.in: After finding the right thread library (containing
e.g. pthread_create) we now search for the right realtime library
(containing e.g. sched_get_priority_max). Makes the output of the
thread related libraries correct.
* gtimer.c (g_usleep): The current implementation of g_usleep
(simply calling select) doesn't work reliable for multi-threaded
programs on some platforms (bad omen for the main loop....), so I
changed the implementation for thread-using programs to wait for a
GCond for the specified amount of time (NB: sleep and usleep are
not MT-safe in general, because they often use signals).
Wed Mar 22 16:49:57 2000 Owen Taylor <otaylor@redhat.com>
* gmem.c (g_mem_chunk_area_compare): Fix indentation.

14
ChangeLog.pre-2-10
View File

@ -1,3 +1,17 @@
2000-03-23 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* configure.in: After finding the right thread library (containing
e.g. pthread_create) we now search for the right realtime library
(containing e.g. sched_get_priority_max). Makes the output of the
thread related libraries correct.
* gtimer.c (g_usleep): The current implementation of g_usleep
(simply calling select) doesn't work reliable for multi-threaded
programs on some platforms (bad omen for the main loop....), so I
changed the implementation for thread-using programs to wait for a
GCond for the specified amount of time (NB: sleep and usleep are
not MT-safe in general, because they often use signals).
Wed Mar 22 16:49:57 2000 Owen Taylor <otaylor@redhat.com>
* gmem.c (g_mem_chunk_area_compare): Fix indentation.

14
ChangeLog.pre-2-12
View File

@ -1,3 +1,17 @@
2000-03-23 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* configure.in: After finding the right thread library (containing
e.g. pthread_create) we now search for the right realtime library
(containing e.g. sched_get_priority_max). Makes the output of the
thread related libraries correct.
* gtimer.c (g_usleep): The current implementation of g_usleep
(simply calling select) doesn't work reliable for multi-threaded
programs on some platforms (bad omen for the main loop....), so I
changed the implementation for thread-using programs to wait for a
GCond for the specified amount of time (NB: sleep and usleep are
not MT-safe in general, because they often use signals).
Wed Mar 22 16:49:57 2000 Owen Taylor <otaylor@redhat.com>
* gmem.c (g_mem_chunk_area_compare): Fix indentation.

14
ChangeLog.pre-2-2
View File

@ -1,3 +1,17 @@
2000-03-23 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* configure.in: After finding the right thread library (containing
e.g. pthread_create) we now search for the right realtime library
(containing e.g. sched_get_priority_max). Makes the output of the
thread related libraries correct.
* gtimer.c (g_usleep): The current implementation of g_usleep
(simply calling select) doesn't work reliable for multi-threaded
programs on some platforms (bad omen for the main loop....), so I
changed the implementation for thread-using programs to wait for a
GCond for the specified amount of time (NB: sleep and usleep are
not MT-safe in general, because they often use signals).
Wed Mar 22 16:49:57 2000 Owen Taylor <otaylor@redhat.com>
* gmem.c (g_mem_chunk_area_compare): Fix indentation.

14
ChangeLog.pre-2-4
View File

@ -1,3 +1,17 @@
2000-03-23 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* configure.in: After finding the right thread library (containing
e.g. pthread_create) we now search for the right realtime library
(containing e.g. sched_get_priority_max). Makes the output of the
thread related libraries correct.
* gtimer.c (g_usleep): The current implementation of g_usleep
(simply calling select) doesn't work reliable for multi-threaded
programs on some platforms (bad omen for the main loop....), so I
changed the implementation for thread-using programs to wait for a
GCond for the specified amount of time (NB: sleep and usleep are
not MT-safe in general, because they often use signals).
Wed Mar 22 16:49:57 2000 Owen Taylor <otaylor@redhat.com>
* gmem.c (g_mem_chunk_area_compare): Fix indentation.

14
ChangeLog.pre-2-6
View File

@ -1,3 +1,17 @@
2000-03-23 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* configure.in: After finding the right thread library (containing
e.g. pthread_create) we now search for the right realtime library
(containing e.g. sched_get_priority_max). Makes the output of the
thread related libraries correct.
* gtimer.c (g_usleep): The current implementation of g_usleep
(simply calling select) doesn't work reliable for multi-threaded
programs on some platforms (bad omen for the main loop....), so I
changed the implementation for thread-using programs to wait for a
GCond for the specified amount of time (NB: sleep and usleep are
not MT-safe in general, because they often use signals).
Wed Mar 22 16:49:57 2000 Owen Taylor <otaylor@redhat.com>
* gmem.c (g_mem_chunk_area_compare): Fix indentation.

14
ChangeLog.pre-2-8
View File

@ -1,3 +1,17 @@
2000-03-23 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* configure.in: After finding the right thread library (containing
e.g. pthread_create) we now search for the right realtime library
(containing e.g. sched_get_priority_max). Makes the output of the
thread related libraries correct.
* gtimer.c (g_usleep): The current implementation of g_usleep
(simply calling select) doesn't work reliable for multi-threaded
programs on some platforms (bad omen for the main loop....), so I
changed the implementation for thread-using programs to wait for a
GCond for the specified amount of time (NB: sleep and usleep are
not MT-safe in general, because they often use signals).
Wed Mar 22 16:49:57 2000 Owen Taylor <otaylor@redhat.com>
* gmem.c (g_mem_chunk_area_compare): Fix indentation.

52
configure.in
View File

@ -733,8 +733,6 @@ case $have_threads in
G_THREAD_LIBS=error
glib_save_LIBS="$LIBS"
for thread_lib in "" pthread pthreads c_r thread dce; do
# This is not AC_CHECK_LIB to also work with function
# name mangling in header files.
if test x"$thread_lib" = x; then
add_thread_lib=""
IN=""
@ -763,6 +761,31 @@ case $have_threads in
break],
[AC_MSG_RESULT(no)])
done
for thread_lib in "" rt; do
if test x"$thread_lib" = x; then
add_thread_lib=""
IN=""
else
add_thread_lib="-l$thread_lib"
IN=" in -l$thread_lib"
fi
LIBS="$glib_save_LIBS $add_thread_lib"
AC_MSG_CHECKING(for sched_get_priority_min$IN)
AC_TRY_RUN([#include <sched.h>
#include <errno.h>
int main() {
errno = 0;
return sched_get_priority_min(SCHED_OTHER)==-1
&& errno != 0;
}],
[AC_MSG_RESULT(yes)
G_THREAD_LIBS="$G_THREAD_LIBS $add_thread_lib"
posix_priority_min="sched_get_priority_min(SCHED_OTHER)"
posix_priority_max="sched_get_priority_max(SCHED_OTHER)"
break],
[AC_MSG_RESULT(no)])
done
LIBS="$glib_save_LIBS"
mutex_has_default=yes
mutex_default_type='pthread_mutex_t'
@ -884,8 +907,8 @@ if test x"$enable_threads" = xyes; then
# The signature for the POSIX version is:
# int getpwuid_r(uid_t, struct passwd *, char *, size_t, struct passwd **)
AC_TRY_COMPILE([#include <pwd.h>
#include <sys/types.h>
#include <stdlib.h>],
#include <sys/types.h>
#include <stdlib.h>],
[getpwuid_r((uid_t)0, NULL, NULL, (size_t)0, NULL);],
[AC_DEFINE(HAVE_GETPWUID_R_POSIX)
AC_MSG_RESULT(yes)],
@ -907,26 +930,7 @@ if test x"$enable_threads" = xyes; then
[AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_PTHREAD_ATTR_SETSTACKSIZE)],
[AC_MSG_RESULT(no)])
# If sched_get_priority_min(SCHED_OTHER) returns something
# negative, we ignore it.
AC_MSG_CHECKING(for minimal/maximal thread priority)
AC_TRY_RUN([#include <pthread.h>
int main ()
{ return sched_get_priority_min(SCHED_OTHER) == -1;}],
[posix_priority_min="sched_get_priority_min(SCHED_OTHER)"
posix_priority_max="sched_get_priority_max(SCHED_OTHER)"],
[posix_priority_min=none])
# On some platforms we need to link to -lrt to use the
# sched_* functions
LIBS="$LIBS -lrt"
AC_TRY_RUN([#include <pthread.h>
int main ()
{ return sched_get_priority_min(SCHED_OTHER) == -1;}],
[posix_priority_min="sched_get_priority_min(SCHED_OTHER)"
posix_priority_max="sched_get_priority_max(SCHED_OTHER)"
G_THREAD_LIBS="$G_THREAD_LIBS -lrt"],
[posix_priority_min=none])
LIBS="$glib_save_LIBS $G_THREAD_LIBS"
if test x"$posix_priority_min" = xnone; then
AC_EGREP_CPP(PX_PRIO_MIN,[#include <pthread.h>
PX_PRIO_MIN],,[
@ -939,7 +943,7 @@ if test x"$enable_threads" = xyes; then
posix_priority_min=PRI_OTHER_MIN
posix_priority_max=PRI_OTHER_MAX])
fi
if test x"$posix_priority_min" = xnone; then
if test x"$posix_priority_min" = x; then
AC_MSG_RESULT(none found)
AC_MSG_WARN($POSIX_NO_PRIORITIES)
posix_priority_min=-1

39
glib/gtimer.c
View File

@ -205,10 +205,41 @@ g_usleep (gulong microseconds)
#ifdef G_OS_WIN32
Sleep (microseconds / 1000);
#else
struct timeval tv;
tv.tv_sec = microseconds / G_MICROSEC;
tv.tv_usec = microseconds % G_MICROSEC;
select(0, NULL, NULL, NULL, &tv);
if (g_thread_supported ())
{
static GStaticMutex mutex = G_STATIC_MUTEX_INIT;
static GCond* cond = NULL;
GTimeVal end_time;
g_get_current_time (&end_time);
end_time.tv_sec += microseconds / G_MICROSEC;
end_time.tv_usec += microseconds % G_MICROSEC;
if (end_time.tv_usec >= G_MICROSEC)
{
end_time.tv_usec -= G_MICROSEC;
end_time.tv_sec += 1;
}
g_static_mutex_lock (&mutex);
if (!cond)
cond = g_cond_new ();
while (g_cond_timed_wait (cond, g_static_mutex_get_mutex (&mutex),
&end_time))
/* do nothing */;
g_static_mutex_unlock (&mutex);
}
else
{
struct timeval tv;
tv.tv_sec = microseconds / G_MICROSEC;
tv.tv_usec = microseconds % G_MICROSEC;
select(0, NULL, NULL, NULL, &tv);
}
#endif
}

39
gtimer.c
View File

@ -205,10 +205,41 @@ g_usleep (gulong microseconds)
#ifdef G_OS_WIN32
Sleep (microseconds / 1000);
#else
struct timeval tv;
tv.tv_sec = microseconds / G_MICROSEC;
tv.tv_usec = microseconds % G_MICROSEC;
select(0, NULL, NULL, NULL, &tv);
if (g_thread_supported ())
{
static GStaticMutex mutex = G_STATIC_MUTEX_INIT;
static GCond* cond = NULL;
GTimeVal end_time;
g_get_current_time (&end_time);
end_time.tv_sec += microseconds / G_MICROSEC;
end_time.tv_usec += microseconds % G_MICROSEC;
if (end_time.tv_usec >= G_MICROSEC)
{
end_time.tv_usec -= G_MICROSEC;
end_time.tv_sec += 1;
}
g_static_mutex_lock (&mutex);
if (!cond)
cond = g_cond_new ();
while (g_cond_timed_wait (cond, g_static_mutex_get_mutex (&mutex),
&end_time))
/* do nothing */;
g_static_mutex_unlock (&mutex);
}
else
{
struct timeval tv;
tv.tv_sec = microseconds / G_MICROSEC;
tv.tv_usec = microseconds % G_MICROSEC;
select(0, NULL, NULL, NULL, &tv);
}
#endif
}