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authorUlrich Drepper <drepper@redhat.com>2000-04-15 17:39:36 +0000
committerUlrich Drepper <drepper@redhat.com>2000-04-15 17:39:36 +0000
commit150f740ace60e238094cde1ecf03e5c1c0e0d3ff (patch)
tree5b37cc3b5862575fc7b465b17c9e913dc33e3962 /linuxthreads/pthread.c
parentef187474bc32c56121db454e023197f2037e601d (diff)
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Update.
* sysdeps/unix/sysv/linux/alpha/adjtime.c: Fix typo in compat_symbol call for old adjtime. * sysdeps/alpha/dl-machine.h (RTLD_START): Rewrite for new init
Diffstat (limited to 'linuxthreads/pthread.c')
-rw-r--r--linuxthreads/pthread.c23
1 files changed, 18 insertions, 5 deletions
diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c
index e8ec26d33c..3ceb33562e 100644
--- a/linuxthreads/pthread.c
+++ b/linuxthreads/pthread.c
@@ -32,6 +32,11 @@
#include "spinlock.h"
#include "restart.h"
+/* Sanity check. */
+#if __ASSUME_REALTIME_SIGNALS && !defined __SIGRTMIN
+# error "This must not happen; new kernel assumed but old headers"
+#endif
+
/* Descriptor of the initial thread */
struct _pthread_descr_struct __pthread_initial_thread = {
@@ -161,12 +166,14 @@ char *__pthread_manager_thread_tos = NULL;
int __pthread_exit_requested = 0;
int __pthread_exit_code = 0;
+#if !__ASSUME_REALTIME_SIGNALS
/* Pointers that select new or old suspend/resume functions
based on availability of rt signals. */
void (*__pthread_restart)(pthread_descr) = __pthread_restart_old;
void (*__pthread_suspend)(pthread_descr) = __pthread_suspend_old;
int (*__pthread_timedsuspend)(pthread_descr, const struct timespec *) = __pthread_timedsuspend_old;
+#endif /* __ASSUME_REALTIME_SIGNALS */
/* Communicate relevant LinuxThreads constants to gdb */
@@ -230,23 +237,27 @@ static int rtsigs_initialized;
static void
init_rtsigs (void)
{
+#if !__ASSUME_REALTIME_SIGNALS
if (!kernel_has_rtsig ())
{
current_rtmin = -1;
current_rtmax = -1;
-#if __SIGRTMAX - __SIGRTMIN >= 3
+# if __SIGRTMAX - __SIGRTMIN >= 3
__pthread_sig_restart = SIGUSR1;
__pthread_sig_cancel = SIGUSR2;
__pthread_sig_debug = 0;
-#endif
+# endif
}
else
+#endif /* __ASSUME_REALTIME_SIGNALS */
{
#if __SIGRTMAX - __SIGRTMIN >= 3
current_rtmin = __SIGRTMIN + 3;
+# if !__ASSUME_REALTIME_SIGNALS
__pthread_restart = __pthread_restart_new;
__pthread_suspend = __pthread_wait_for_restart_signal;
__pthread_timedsuspend = __pthread_timedsuspend_new;
+# endif /* __ASSUME_REALTIME_SIGNALS */
#else
current_rtmin = __SIGRTMIN;
#endif
@@ -825,6 +836,7 @@ void __pthread_wait_for_restart_signal(pthread_descr self)
} while (self->p_signal !=__pthread_sig_restart );
}
+#if !__ASSUME_REALTIME_SIGNALS
/* The _old variants are for 2.0 and early 2.1 kernels which don't have RT
signals.
On these kernels, we use SIGUSR1 and SIGUSR2 for restart and cancellation.
@@ -844,7 +856,7 @@ void __pthread_suspend_old(pthread_descr self)
__pthread_wait_for_restart_signal(self);
}
-int
+int
__pthread_timedsuspend_old(pthread_descr self, const struct timespec *abstime)
{
sigset_t unblock, initial_mask;
@@ -903,7 +915,7 @@ __pthread_timedsuspend_old(pthread_descr self, const struct timespec *abstime)
Otherwise, no restart was delivered yet, so a potential
race exists; we return a 0 to the caller which must deal
with this race in an appropriate way; for example by
- atomically removing the thread from consideration for a
+ atomically removing the thread from consideration for a
wakeup---if such a thing fails, it means a restart is
being delivered. */
@@ -920,6 +932,7 @@ __pthread_timedsuspend_old(pthread_descr self, const struct timespec *abstime)
/* woken due to restart signal */
return 1;
}
+#endif /* __ASSUME_REALTIME_SIGNALS */
void __pthread_restart_new(pthread_descr th)
{
@@ -929,7 +942,7 @@ void __pthread_restart_new(pthread_descr th)
/* There is no __pthread_suspend_new because it would just
be a wasteful wrapper for __pthread_wait_for_restart_signal */
-int
+int
__pthread_timedsuspend_new(pthread_descr self, const struct timespec *abstime)
{
sigset_t unblock, initial_mask;