Revamp suspend and resume. While I'm here add pthread_suspend_all_np()

and pthread_resume_all_np().  These suspend and resume all threads except
the current thread, respectively.  The existing functions pthread_single_np()
and pthread_multi_np(), which formerly had no effect, now exhibit the same
behaviour and pthread_suspend_all_np() and pthread_resume_all_np().  These
functions have been added mostly for the native java port.

Don't allow the uthread kernel pipe to use the same descriptors as
stdio.  Mostily submitted by Oswald Buddenhagen <ossi@kde.org>.

Correct some minor style nits.

1 files changed, 9 insertions, 41 deletions

diff --git a/lib/libkse/thread/thr_mutex.c b/lib/libkse/thread/thr_mutex.c
index 0f67b4b..86e0b8b 100644
--- a/lib/libkse/thread/thr_mutex.c
+++ b/lib/libkse/thread/thr_mutex.c
@@ -887,21 +887,9 @@ mutex_unlock_common(pthread_mutex_t * mutex, int add_reference)
 				 */
 				if (((*mutex)->m_owner =
 			  	    mutex_queue_deq(*mutex)) != NULL) {
-					/*
-					 * Unless the new owner of the mutex is
-					 * currently suspended, allow the owner
-					 * to run.  If the thread is suspended,
-					 * make a note that the thread isn't in
-					 * a wait queue any more.
-					 */
-					if (((*mutex)->m_owner->state !=
-					    PS_SUSPENDED)) {
-						PTHREAD_NEW_STATE((*mutex)->m_owner,
-						    PS_RUNNING);
-					} else {
-						(*mutex)->m_owner->suspended =
-						    SUSP_NOWAIT;
-					}
+					/* Make the new owner runnable: */
+					PTHREAD_NEW_STATE((*mutex)->m_owner,
+					    PS_RUNNING);
 
 					/*
 					 * Add the mutex to the threads list of
@@ -1019,20 +1007,10 @@ mutex_unlock_common(pthread_mutex_t * mutex, int add_reference)
 						(*mutex)->m_prio;
 
 					/*
-					 * Unless the new owner of the mutex is
-					 * currently suspended, allow the owner
-					 * to run.  If the thread is suspended,
-					 * make a note that the thread isn't in
-					 * a wait queue any more.
+					 * Make the new owner runnable:
 					 */
-					if (((*mutex)->m_owner->state !=
-					    PS_SUSPENDED)) {
-						PTHREAD_NEW_STATE((*mutex)->m_owner,
-						    PS_RUNNING);
-					} else {
-						(*mutex)->m_owner->suspended =
-						    SUSP_NOWAIT;
-					}
+					PTHREAD_NEW_STATE((*mutex)->m_owner,
+					    PS_RUNNING);
 				}
 			}
 			break;
@@ -1148,20 +1126,10 @@ mutex_unlock_common(pthread_mutex_t * mutex, int add_reference)
 					    (*mutex)->m_prio;
 
 					/*
-					 * Unless the new owner of the mutex is
-					 * currently suspended, allow the owner
-					 * to run.  If the thread is suspended,
-					 * make a note that the thread isn't in
-					 * a wait queue any more.
+					 * Make the new owner runnable:
 					 */
-					if (((*mutex)->m_owner->state !=
-					    PS_SUSPENDED)) {
-						PTHREAD_NEW_STATE((*mutex)->m_owner,
-						    PS_RUNNING);
-					} else {
-						(*mutex)->m_owner->suspended =
-						    SUSP_NOWAIT;
-					}
+					PTHREAD_NEW_STATE((*mutex)->m_owner,
+					    PS_RUNNING);
 				}
 			}
 			break;