hash table comment fix.

[urcu.git] / formal-model / urcu / urcu.spin

diff --git a/formal-model/urcu/urcu.spin b/formal-model/urcu/urcu.spin
index 630971f0a280827157bfb19937d7bdbd1d181814..2cfcb7020e7528afefa3ea905afec14ade518ce3 100644 (file)
--- a/formal-model/urcu/urcu.spin
+++ b/formal-model/urcu/urcu.spin
@@ -25,11 +25,32 @@
 
 /* All signal readers have same PID and uses same reader variable */
 #ifdef TEST_SIGNAL_ON_WRITE
-#define get_pid()      ((_pid < 1) -> 0 : 1)
+
+#define NR_READERS 1   /* the writer is also a signal reader */
+#define NR_WRITERS 1
+
+#define NR_PROCS 1
+
+#define get_pid()      (0)
+
 #elif defined(TEST_SIGNAL_ON_READ)
+
 #define get_pid()      ((_pid < 2) -> 0 : 1)
+
+#define NR_READERS 1
+#define NR_WRITERS 1
+
+#define NR_PROCS 2
+
 #else
+
 #define get_pid()      (_pid)
+
+#define NR_READERS 1
+#define NR_WRITERS 1
+
+#define NR_PROCS 2
+
 #endif
 
 #define get_readerid() (get_pid())
@@ -168,21 +189,22 @@ inline smp_mb_pid(i, j)
  * We are not modeling the whole rendez-vous between readers and writers here,
  * we just let the writer update each reader's caches remotely.
  */
-inline smp_mb(i, j)
+inline smp_mb_writer(i, j)
 {
-       if
-       :: get_pid() >= NR_READERS ->
-               smp_mb_pid(get_pid(), j);
-               i = 0;
-               do
-               :: i < NR_READERS ->
-                       smp_mb_pid(i, j);
-                       i++;
-               :: i >= NR_READERS -> break
-               od;
-               smp_mb_pid(get_pid(), j);
-       :: else -> skip;
-       fi;
+       smp_mb_pid(get_pid(), j);
+       i = 0;
+       do
+       :: i < NR_READERS ->
+               smp_mb_pid(i, j);
+               i++;
+       :: i >= NR_READERS -> break
+       od;
+       smp_mb_pid(get_pid(), j);
+}
+
+inline smp_mb_reader(i, j)
+{
+       skip;
 }
 
 #else
@@ -234,6 +256,16 @@ inline smp_mb(i, j)
        }
 }
 
+inline smp_mb_writer(i, j)
+{
+       smp_mb(i, j);
+}
+
+inline smp_mb_reader(i, j)
+{
+       smp_mb(i, j);
+}
+
 #endif
 
 /* Keep in sync manually with smp_rmb, wmp_wmb, ooo_mem and init() */
@@ -381,7 +413,7 @@ inline wait_for_reader(tmp, tmp2, i, j)
                        && ((tmp2 ^ READ_CACHED_VAR(urcu_gp_ctr))
                                & RCU_GP_CTR_BIT) ->
 #ifndef GEN_ERROR_WRITER_PROGRESS
-                       smp_mb(i, j);
+                       smp_mb_writer(i, j);
 #else
                        ooo_mem(i);
 #endif
@@ -412,6 +444,8 @@ inline wait_for_quiescent_state(tmp, tmp2, i, j)
 
 /* Model the RCU read-side critical section. */
 
+#ifndef TEST_SIGNAL_ON_WRITE
+
 inline urcu_one_read(i, j, nest_i, tmp, tmp2)
 {
        nest_i = 0;
@@ -434,7 +468,7 @@ inline urcu_one_read(i, j, nest_i, tmp, tmp2)
                        WRITE_CACHED_VAR(urcu_active_readers[get_readerid()],
                                         tmp + 1);
                fi;
-               smp_mb(i, j);
+               smp_mb_reader(i, j);
                dispatch_sighand_read_exec();
                nest_i++;
        :: nest_i >= READER_NEST_LEVEL -> break;
@@ -447,7 +481,7 @@ inline urcu_one_read(i, j, nest_i, tmp, tmp2)
        nest_i = 0;
        do
        :: nest_i < READER_NEST_LEVEL ->
-               smp_mb(i, j);
+               smp_mb_reader(i, j);
                dispatch_sighand_read_exec();
                tmp2 = READ_CACHED_VAR(urcu_active_readers[get_readerid()]);
                ooo_mem(i);
@@ -481,18 +515,14 @@ end_reader:
                 * progress when it's blocked by an always progressing reader.
                 */
 #ifdef READER_PROGRESS
-               /* Only test progress of one random reader. They are all the
-                * same. */
-               if
-               :: get_readerid() == 0 ->
 progress_reader:
-                       skip;
-               fi;
 #endif
                urcu_one_read(i, j, nest_i, tmp, tmp2);
        od;
 }
 
+#endif //!TEST_SIGNAL_ON_WRITE
+
 #ifdef TEST_SIGNAL
 /* signal handler reader */
 
@@ -515,7 +545,7 @@ inline urcu_one_read_sig(i, j, nest_i, tmp, tmp2)
                        WRITE_CACHED_VAR(urcu_active_readers[get_readerid()],
                                         tmp + 1);
                fi;
-               smp_mb(i, j);
+               smp_mb_reader(i, j);
                nest_i++;
        :: nest_i >= READER_NEST_LEVEL -> break;
        od;
@@ -527,7 +557,7 @@ inline urcu_one_read_sig(i, j, nest_i, tmp, tmp2)
        nest_i = 0;
        do
        :: nest_i < READER_NEST_LEVEL ->
-               smp_mb(i, j);
+               smp_mb_reader(i, j);
                tmp2 = READ_CACHED_VAR(urcu_active_readers[get_readerid()]);
                ooo_mem(i);
                WRITE_CACHED_VAR(urcu_active_readers[get_readerid()], tmp2 - 1);
@@ -559,13 +589,7 @@ end_reader:
                 * progress when it's blocked by an always progressing reader.
                 */
 #ifdef READER_PROGRESS
-               /* Only test progress of one random reader. They are all the
-                * same. */
-               if
-               :: get_readerid() == 0 ->
 progress_reader:
-                       skip;
-               fi;
 #endif
                urcu_one_read_sig(i, j, nest_i, tmp, tmp2);
        od;
@@ -611,7 +635,7 @@ progress_writer1:
                                fi;
                        }
                od;
-               smp_mb(i, j);
+               smp_mb_writer(i, j);
                dispatch_sighand_write_exec();
                tmp = READ_CACHED_VAR(urcu_gp_ctr);
                ooo_mem(i);
@@ -634,7 +658,7 @@ progress_writer1:
                dispatch_sighand_write_exec();
                wait_for_quiescent_state(tmp, tmp2, i, j);
 #endif
-               smp_mb(i, j);
+               smp_mb_writer(i, j);
                dispatch_sighand_write_exec();
                write_lock = 0;
                /* free-up step, e.g., kfree(). */