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From yla...@apache.org
Subject svn commit: r1672577 - in /apr/apr/branches/1.5.x: ./ tables/apr_skiplist.c
Date Fri, 10 Apr 2015 07:55:39 GMT
Author: ylavic
Date: Fri Apr 10 07:55:39 2015
New Revision: 1672577

URL: http://svn.apache.org/r1672577
Log:
Merge r1672575 from trunk.

skiplist: avoid (undefined) unsigned to signed conversion and save cycles in
the hot path get_b_rand().

Modified:
    apr/apr/branches/1.5.x/   (props changed)
    apr/apr/branches/1.5.x/tables/apr_skiplist.c

Propchange: apr/apr/branches/1.5.x/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Fri Apr 10 07:55:39 2015
@@ -1,4 +1,4 @@
 /apr/apr/branches/1.4.x:1003369,1101301
 /apr/apr/branches/1.6.x:1593600,1593612,1648831,1666812
-/apr/apr/trunk:733052,739635,746310,747990,748080,748361,748371,748565,748888,748902,748988,749810,760443,767895,775683,782838,783398,783958,784633,784773,788588,789050,793192-793193,794118,794485,795267,799497,800627,809745,809854,810472,811455,813063,821306,829490,831641,832904,835607,888669,892028,892159,892909,896382,896653,908427,910419,910597,917819,917837-917838,925965,929796,931973,951771,960665,960671,979891,983618,989450,990435,1003338,1044440,1044447,1055657,1072165,1078845,1081462,1081495,1083038,1083242,1084662,1086695,1088023,1089031,1089129,1089438,1099348,1103310,1183683,1183685-1183686,1183688,1183693,1183698,1213382,1235047,1236970,1237078,1237507,1240472,1340286,1340288,1340470,1341193,1341196,1343233,1343243,1367050,1368819,1370494,1372018,1372022,1372093,1372849,1376957,1384764,1389077,1400200,1402868,1405985,1406690,1420106,1420109,1425356,1428809,1438940,1438958,1442903,1449568,1456418,1459994,1460179,1460241,1460399,1460405,1462738,1462813,1470186,1470348,147
 5509,1478905,1480067,1481262,1481265,1484271,1487796,1489517,1496407,1502804,1510354,1516261,1523384,1523479,1523484,1523505,1523521,1523604,1523613,1523615,1523844-1523845,1523853,1524014,1524031,1528797,1528809,1529488,1529495,1529515,1529521,1529668,1530786,1530800,1530988,1531554,1531768,1531884,1532022,1533104,1533111,1533979,1535027,1535157,1536744,1538171,1539374,1539389,1539455,1539603,1541054,1541061,1541486,1541655,1541666,1541744,1542601,1542779,1543033,1543056,1548575,1550907,1551650,1551659,1558905,1559382,1559873,1559975,1561260,1561265,1561321,1561347,1561356,1561361,1561394,1561555,1571894,1575509,1578420,1587063,1587545,1589982,1593611,1604596,1604598,1610854,1611004,1611023,1611107,1611110,1611120,1611125,1611184,1611193,1611466,1626564,1634615,1642159,1648830,1664406,1664447,1664451,1664471,1664769,1664775,1664904,1664911,1664958,1666341,1666411,1666458,1666611,1667914-1667916,1671329,1671356,1671514,1672354,1672366,1672495
+/apr/apr/trunk:733052,739635,746310,747990,748080,748361,748371,748565,748888,748902,748988,749810,760443,767895,775683,782838,783398,783958,784633,784773,788588,789050,793192-793193,794118,794485,795267,799497,800627,809745,809854,810472,811455,813063,821306,829490,831641,832904,835607,888669,892028,892159,892909,896382,896653,908427,910419,910597,917819,917837-917838,925965,929796,931973,951771,960665,960671,979891,983618,989450,990435,1003338,1044440,1044447,1055657,1072165,1078845,1081462,1081495,1083038,1083242,1084662,1086695,1088023,1089031,1089129,1089438,1099348,1103310,1183683,1183685-1183686,1183688,1183693,1183698,1213382,1235047,1236970,1237078,1237507,1240472,1340286,1340288,1340470,1341193,1341196,1343233,1343243,1367050,1368819,1370494,1372018,1372022,1372093,1372849,1376957,1384764,1389077,1400200,1402868,1405985,1406690,1420106,1420109,1425356,1428809,1438940,1438958,1442903,1449568,1456418,1459994,1460179,1460241,1460399,1460405,1462738,1462813,1470186,1470348,147
 5509,1478905,1480067,1481262,1481265,1484271,1487796,1489517,1496407,1502804,1510354,1516261,1523384,1523479,1523484,1523505,1523521,1523604,1523613,1523615,1523844-1523845,1523853,1524014,1524031,1528797,1528809,1529488,1529495,1529515,1529521,1529668,1530786,1530800,1530988,1531554,1531768,1531884,1532022,1533104,1533111,1533979,1535027,1535157,1536744,1538171,1539374,1539389,1539455,1539603,1541054,1541061,1541486,1541655,1541666,1541744,1542601,1542779,1543033,1543056,1548575,1550907,1551650,1551659,1558905,1559382,1559873,1559975,1561260,1561265,1561321,1561347,1561356,1561361,1561394,1561555,1571894,1575509,1578420,1587063,1587545,1589982,1593611,1604596,1604598,1610854,1611004,1611023,1611107,1611110,1611120,1611125,1611184,1611193,1611466,1626564,1634615,1642159,1648830,1664406,1664447,1664451,1664471,1664769,1664775,1664904,1664911,1664958,1666341,1666411,1666458,1666611,1667914-1667916,1671329,1671356,1671514,1672354,1672366,1672495,1672575
 /apr/apr/trunk/test/testnames.c:1460405

Modified: apr/apr/branches/1.5.x/tables/apr_skiplist.c
URL: http://svn.apache.org/viewvc/apr/apr/branches/1.5.x/tables/apr_skiplist.c?rev=1672577&r1=1672576&r2=1672577&view=diff
==============================================================================
--- apr/apr/branches/1.5.x/tables/apr_skiplist.c (original)
+++ apr/apr/branches/1.5.x/tables/apr_skiplist.c Fri Apr 10 07:55:39 2015
@@ -63,13 +63,12 @@ struct apr_skiplistnode {
 static int get_b_rand(void)
 {
     static int ph = 32;         /* More bits than we will ever use */
-    static apr_uint32_t randseq;
+    static int randseq;
     if (ph > 31) {              /* Num bits in return of rand() */
         ph = 0;
-        randseq = (apr_uint32_t) rand();
+        randseq = rand();
     }
-    ph++;
-    return ((randseq & (1 << (ph - 1))) >> (ph - 1));
+    return randseq & (1 << ph++);
 }
 
 typedef struct {



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