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From svn-r...@apache.org
Subject svn commit: r1241767 - in /subversion/branches/1.6.x: ./ STATUS subversion/libsvn_fs_base/reps-strings.c
Date Wed, 08 Feb 2012 04:00:11 GMT
Author: svn-role
Date: Wed Feb  8 04:00:10 2012
New Revision: 1241767

URL: http://svn.apache.org/viewvc?rev=1241767&view=rev
Log:
Merge r1205726 from trunk:

 * r1205726
   Plug a memory leak in the fs-base deltification logic which has
   been observed to exhaust all the available memory on a server on a
   real-world dataset.
   Justification:
     Can you say DoS?
   Votes:
     +1: cmpilato, danielsh, stsp

Modified:
    subversion/branches/1.6.x/   (props changed)
    subversion/branches/1.6.x/STATUS
    subversion/branches/1.6.x/subversion/libsvn_fs_base/reps-strings.c

Propchange: subversion/branches/1.6.x/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Wed Feb  8 04:00:10 2012
@@ -121,4 +121,4 @@
 /subversion/branches/tc_url_rev:874351-874483
 /subversion/branches/tree-conflicts:868291-873154
 /subversion/branches/tree-conflicts-notify:873926-874008
-/subversion/trunk:875965,875968,876004,876012,876017,876019,876022,876024,876032,876041-876042,876048,876051,876055-876056,876059,876083,876091,876097,876101,876104,876109,876123-876125,876129,876132,876138,876160,876167,876175,876180,876185,876205,876223-876225,876230,876233,876245,876252,876256,876283,876287,876312,876326-876327,876330,876366,876372,876374,876376,876383,876386,876442,876456-876457,876462-876464,876467,876469,876480,876486,876495-876497,876516-876518,876524,876526,876583,876601,876614-876615,876628,876633,876641,876645,876659,876687,876689,876705,876715,876726,876760,876763,876794,876804,876815-876816,876821,876825,876837,876840-876841,876843,876849,876857-876858,876862,876873,876890,876897,876905,876908,876925,876931,876934,876948-876949,876953,876987,876993,877011,877014,877016,877028-877029,877038,877119,877127,877146,877157,877191,877195,877203,877211,877230,877234,877237,877243,877249,877259,877261,877304,877319,877407,877437,877441-877442,877453,87745
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+/subversion/trunk:875965,875968,876004,876012,876017,876019,876022,876024,876032,876041-876042,876048,876051,876055-876056,876059,876083,876091,876097,876101,876104,876109,876123-876125,876129,876132,876138,876160,876167,876175,876180,876185,876205,876223-876225,876230,876233,876245,876252,876256,876283,876287,876312,876326-876327,876330,876366,876372,876374,876376,876383,876386,876442,876456-876457,876462-876464,876467,876469,876480,876486,876495-876497,876516-876518,876524,876526,876583,876601,876614-876615,876628,876633,876641,876645,876659,876687,876689,876705,876715,876726,876760,876763,876794,876804,876815-876816,876821,876825,876837,876840-876841,876843,876849,876857-876858,876862,876873,876890,876897,876905,876908,876925,876931,876934,876948-876949,876953,876987,876993,877011,877014,877016,877028-877029,877038,877119,877127,877146,877157,877191,877195,877203,877211,877230,877234,877237,877243,877249,877259,877261,877304,877319,877407,877437,877441-877442,877453,87745
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 879293,879357,879375-879376,879403,879631,879635-879636,879688,879709-879711,879747,879902,879916,879954,879961,879966,879971,880027,880082,880095,880105,880146,880162,880226,880274-880275,880370,880450,880461,880474,880525-880526,880552,881905,884842,886164,886197,888715,888979,889081,889840,891672,892050,892085,893478,895514,895653,896522,896915,898048,898963,899826,899828,900797,901304,901752,902093,902467,904301,904394,904594,905303,905326,906256,906305,906587,907644,908980-908981,917523,917640,918211,922516,923389,923391,926151,926167,927323,927328,931209,931211,931392,931568,932942,933299,934599,934603,935631,935992,935996,937610,939000,939002,939375-939376,944635,945350,946355,946767,947006,948512,948916,949307,950931,950933,951753,952992,953317,955369,957507,958024,959004,959760,961055,961970,962377-962378,964167,964349,964767,965405,965469,965508,979045,979429,980811,981449,981921,984565,984928,984931,991534,992114,996884,997026,997070,997457,997466,997471,997474,10
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Modified: subversion/branches/1.6.x/STATUS
URL: http://svn.apache.org/viewvc/subversion/branches/1.6.x/STATUS?rev=1241767&r1=1241766&r2=1241767&view=diff
==============================================================================
--- subversion/branches/1.6.x/STATUS (original)
+++ subversion/branches/1.6.x/STATUS Wed Feb  8 04:00:10 2012
@@ -269,12 +269,3 @@ Veto-blocked changes:
 
 Approved changes:
 =================
-
- * r1205726
-   Plug a memory leak in the fs-base deltification logic which has
-   been observed to exhaust all the available memory on a server on a
-   real-world dataset.
-   Justification:
-     Can you say DoS?
-   Votes:
-     +1: cmpilato, danielsh, stsp

Modified: subversion/branches/1.6.x/subversion/libsvn_fs_base/reps-strings.c
URL: http://svn.apache.org/viewvc/subversion/branches/1.6.x/subversion/libsvn_fs_base/reps-strings.c?rev=1241767&r1=1241766&r2=1241767&view=diff
==============================================================================
--- subversion/branches/1.6.x/subversion/libsvn_fs_base/reps-strings.c (original)
+++ subversion/branches/1.6.x/subversion/libsvn_fs_base/reps-strings.c Wed Feb  8 04:00:10
2012
@@ -669,8 +669,10 @@ struct rep_read_baton
      is digestified. */
   svn_boolean_t checksum_finalized;
 
-  /* Used for temporary allocations, iff `trail' (above) is null.  */
-  apr_pool_t *pool;
+  /* Used for temporary allocations.  This pool is cleared at the
+     start of each invocation of the relevant stream read function --
+     see rep_read_contents().  */
+  apr_pool_t *scratch_pool;
 
 };
 
@@ -698,7 +700,7 @@ rep_read_get_baton(struct rep_read_baton
   b->checksum_finalized = FALSE;
   b->fs = fs;
   b->trail = use_trail_for_reads ? trail : NULL;
-  b->pool = pool;
+  b->scratch_pool = svn_pool_create(pool);
   b->rep_key = rep_key;
   b->offset = 0;
 
@@ -866,7 +868,7 @@ txn_body_read_rep(void *baton, trail_t *
                              args->buf,
                              args->len,
                              trail,
-                             trail->pool));
+                             args->rb->scratch_pool));
 
       args->rb->offset += *(args->len);
 
@@ -957,6 +959,9 @@ rep_read_contents(void *baton, char *buf
   struct rep_read_baton *rb = baton;
   struct read_rep_args args;
 
+  /* Clear the scratch pool of the results of previous invocations. */
+  svn_pool_clear(rb->scratch_pool);
+
   args.rb = rb;
   args.buf = buf;
   args.len = len;
@@ -975,7 +980,7 @@ rep_read_contents(void *baton, char *buf
                                      txn_body_read_rep,
                                      &args,
                                      TRUE,
-                                     rb->pool));
+                                     rb->scratch_pool));
     }
   return SVN_NO_ERROR;
 }



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