From 4250c8b13da32ebf6a348dc100478ae65c823d5f Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Fri, 1 Dec 1995 21:07:25 +0000
Subject: Added support for new synchronization algorithm.

---
 c/src/exec/score/headers/tqdata.h             | 25 +++++++++++++++++++++++++
 c/src/exec/score/include/rtems/score/tqdata.h | 25 +++++++++++++++++++++++++
 cpukit/score/include/rtems/score/tqdata.h     | 25 +++++++++++++++++++++++++
 3 files changed, 75 insertions(+)

diff --git a/c/src/exec/score/headers/tqdata.h b/c/src/exec/score/headers/tqdata.h
index 790f31e317..872a29beb0 100644
--- a/c/src/exec/score/headers/tqdata.h
+++ b/c/src/exec/score/headers/tqdata.h
@@ -35,6 +35,17 @@ typedef enum {
   THREAD_QUEUE_DISCIPLINE_PRIORITY  /* PRIORITY queue discipline */
 }   Thread_queue_Disciplines;
 
+/*
+ *  The following enumerated types indicate what happened while the thread
+ *  queue was in the synchronization window.
+ */
+ 
+typedef enum {
+  THREAD_QUEUE_NOTHING_HAPPENED,
+  THREAD_QUEUE_TIMEOUT,
+  THREAD_QUEUE_SATISFIED
+}  Thread_queue_states;
+
 /*
  *  The following record defines the control block used
  *  to manage each thread.
@@ -49,6 +60,7 @@ typedef struct {
                                        /* priority discipline list       */
   } Queues;
   boolean                  sync;       /* alloc/dealloc critical section */
+  Thread_queue_states      sync_state; /* what happened while in sync    */
   Thread_queue_Disciplines discipline; /* queue discipline               */
   States_Control           state;      /* state of threads on Thread_q   */
   unsigned32               timeout_status;
@@ -82,6 +94,19 @@ STATIC INLINE boolean _Thread_queue_Is_reverse_search (
   Priority_Control the_priority
 );
 
+/*
+ *  _Thread_queue_Enter_critical_section
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine is invoked to indicate that the specified thread queue is
+ *  entering a critical section.
+ */
+ 
+STATIC INLINE void _Thread_queue_Enter_critical_section (
+  Thread_queue_Control *the_thread_queue
+);
+
 #include <rtems/score/tqdata.inl>
 
 #ifdef __cplusplus
diff --git a/c/src/exec/score/include/rtems/score/tqdata.h b/c/src/exec/score/include/rtems/score/tqdata.h
index 790f31e317..872a29beb0 100644
--- a/c/src/exec/score/include/rtems/score/tqdata.h
+++ b/c/src/exec/score/include/rtems/score/tqdata.h
@@ -35,6 +35,17 @@ typedef enum {
   THREAD_QUEUE_DISCIPLINE_PRIORITY  /* PRIORITY queue discipline */
 }   Thread_queue_Disciplines;
 
+/*
+ *  The following enumerated types indicate what happened while the thread
+ *  queue was in the synchronization window.
+ */
+ 
+typedef enum {
+  THREAD_QUEUE_NOTHING_HAPPENED,
+  THREAD_QUEUE_TIMEOUT,
+  THREAD_QUEUE_SATISFIED
+}  Thread_queue_states;
+
 /*
  *  The following record defines the control block used
  *  to manage each thread.
@@ -49,6 +60,7 @@ typedef struct {
                                        /* priority discipline list       */
   } Queues;
   boolean                  sync;       /* alloc/dealloc critical section */
+  Thread_queue_states      sync_state; /* what happened while in sync    */
   Thread_queue_Disciplines discipline; /* queue discipline               */
   States_Control           state;      /* state of threads on Thread_q   */
   unsigned32               timeout_status;
@@ -82,6 +94,19 @@ STATIC INLINE boolean _Thread_queue_Is_reverse_search (
   Priority_Control the_priority
 );
 
+/*
+ *  _Thread_queue_Enter_critical_section
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine is invoked to indicate that the specified thread queue is
+ *  entering a critical section.
+ */
+ 
+STATIC INLINE void _Thread_queue_Enter_critical_section (
+  Thread_queue_Control *the_thread_queue
+);
+
 #include <rtems/score/tqdata.inl>
 
 #ifdef __cplusplus
diff --git a/cpukit/score/include/rtems/score/tqdata.h b/cpukit/score/include/rtems/score/tqdata.h
index 790f31e317..872a29beb0 100644
--- a/cpukit/score/include/rtems/score/tqdata.h
+++ b/cpukit/score/include/rtems/score/tqdata.h
@@ -35,6 +35,17 @@ typedef enum {
   THREAD_QUEUE_DISCIPLINE_PRIORITY  /* PRIORITY queue discipline */
 }   Thread_queue_Disciplines;
 
+/*
+ *  The following enumerated types indicate what happened while the thread
+ *  queue was in the synchronization window.
+ */
+ 
+typedef enum {
+  THREAD_QUEUE_NOTHING_HAPPENED,
+  THREAD_QUEUE_TIMEOUT,
+  THREAD_QUEUE_SATISFIED
+}  Thread_queue_states;
+
 /*
  *  The following record defines the control block used
  *  to manage each thread.
@@ -49,6 +60,7 @@ typedef struct {
                                        /* priority discipline list       */
   } Queues;
   boolean                  sync;       /* alloc/dealloc critical section */
+  Thread_queue_states      sync_state; /* what happened while in sync    */
   Thread_queue_Disciplines discipline; /* queue discipline               */
   States_Control           state;      /* state of threads on Thread_q   */
   unsigned32               timeout_status;
@@ -82,6 +94,19 @@ STATIC INLINE boolean _Thread_queue_Is_reverse_search (
   Priority_Control the_priority
 );
 
+/*
+ *  _Thread_queue_Enter_critical_section
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine is invoked to indicate that the specified thread queue is
+ *  entering a critical section.
+ */
+ 
+STATIC INLINE void _Thread_queue_Enter_critical_section (
+  Thread_queue_Control *the_thread_queue
+);
+
 #include <rtems/score/tqdata.inl>
 
 #ifdef __cplusplus
-- 
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