[pypy-commit] stmgc c8-adaptive-trx-length: Merge number of segments in use function

[tobweber]

Author: Tobias Weber <tobias_weber89 at gmx.de>
Branch: c8-adaptive-trx-length
Changeset: r2046:439c2a69589d
Date: 2017-04-29 12:02 +0200
http://bitbucket.org/pypy/stmgc/changeset/439c2a69589d/

Log:	Merge number of segments in use function

diff --git a/c8/stm/sync.c b/c8/stm/sync.c
--- a/c8/stm/sync.c
+++ b/c8/stm/sync.c
@@ -176,6 +176,16 @@
 
 /************************************************************/
 
+static uint8_t number_of_segments_in_use(void) {
+    uint8_t result = 0;
+    int num;
+    for (num = 1; num < NB_SEGMENTS; num++) {
+        if (sync_ctl.in_use1[num] > 0) {
+            result++;
+        }
+    }
+    return result;
+}
 
 #if 0
 void stm_wait_for_current_inevitable_transaction(void)
@@ -202,7 +212,6 @@
 }
 #endif
 
-
 static void acquire_thread_segment(stm_thread_local_t *tl)
 {
     /* This function acquires a segment for the currently running thread,
diff --git a/c8/stm/sync.h b/c8/stm/sync.h
--- a/c8/stm/sync.h
+++ b/c8/stm/sync.h
@@ -22,6 +22,7 @@
 static void set_gs_register(char *value);
 static void ensure_gs_register(long segnum);
 
+static uint8_t number_of_segments_in_use(void);
 
 /* acquire and release one of the segments for running the given thread
    (must have the mutex acquired!) */