From 1d21bac8aa8e770cf164564b09380ccc1ea3a8a6 Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Tue, 10 Jan 2017 16:09:46 +0000
Subject: [PATCH] Avoid unnecessary calls to the xRoundup() method of the
 memory allocator when the soft heap limit is not set.

FossilOrigin-Name: 4209b89eab01814228a178963238e0dffffad2a4
---
 manifest      | 12 ++++++------
 manifest.uuid |  2 +-
 src/malloc.c  | 12 +++++-------
 3 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/manifest b/manifest
index 263f2b60cf..d85a6d5b2c 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fix\sa\spotential\sassertion\sfault\sdiscovered\sby\sOSS-Fuzz.
-D 2017-01-10T15:08:06.289
+C Avoid\sunnecessary\scalls\sto\sthe\sxRoundup()\smethod\sof\sthe\smemory\sallocator\swhen\nthe\ssoft\sheap\slimit\sis\snot\sset.
+D 2017-01-10T16:09:46.718
 F Makefile.in 41bd4cad981487345c4a84081074bcdb876e4b2e
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc b8ca53350ae545e3562403d5da2a69cec79308da
@@ -354,7 +354,7 @@ F src/insert.c 7761fd63136771d411f096f4d7a1af9c5057ddd4
 F src/legacy.c 75d3023be8f0d2b99d60f905090341a03358c58e
 F src/loadext.c 5d6642d141c07d366e43d359e94ec9de47add41d
 F src/main.c e207b81542d13b9f13d61e78ca441f9781f055b0
-F src/malloc.c f3fad34cd570022abca558c573f1761fb09a8212
+F src/malloc.c c36ef8fa6e4cc53ec258c5aa3ad86eb47350cc3d
 F src/mem0.c 6a55ebe57c46ca1a7d98da93aaa07f99f1059645
 F src/mem1.c 6919bcf12f221868ea066eec27e579fed95ce98b
 F src/mem2.c f1940d9e91948dd6a908fbb9ce3835c36b5d83c3
@@ -1543,7 +1543,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P a5fa09657bd6c4ea5fe6712b0f8af2170cbe0381
-R 9d11b71201b21d28f9619103dd00f618
+P 71c03b59b645884ebd6b9e18713cd2eb8c949870
+R 631021f153b5b713372ffbd6126c74cb
 U drh
-Z 82e96cf4e2e496f2e42165b862cbc10e
+Z 02d94bfa17296c03c0e8153386f8771f
diff --git a/manifest.uuid b/manifest.uuid
index 9a414db70b..5b72849afa 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-71c03b59b645884ebd6b9e18713cd2eb8c949870
\ No newline at end of file
+4209b89eab01814228a178963238e0dffffad2a4
\ No newline at end of file
diff --git a/src/malloc.c b/src/malloc.c
index 84191c78a1..053b57b47f 100644
--- a/src/malloc.c
+++ b/src/malloc.c
@@ -217,14 +217,13 @@ static void sqlite3MallocAlarm(int nByte){
 ** Do a memory allocation with statistics and alarms.  Assume the
 ** lock is already held.
 */
-static int mallocWithAlarm(int n, void **pp){
-  int nFull;
+static void mallocWithAlarm(int n, void **pp){
   void *p;
   assert( sqlite3_mutex_held(mem0.mutex) );
-  nFull = sqlite3GlobalConfig.m.xRoundup(n);
   sqlite3StatusHighwater(SQLITE_STATUS_MALLOC_SIZE, n);
   if( mem0.alarmThreshold>0 ){
     sqlite3_int64 nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
+    int nFull = sqlite3GlobalConfig.m.xRoundup(n);
     if( nUsed >= mem0.alarmThreshold - nFull ){
       mem0.nearlyFull = 1;
       sqlite3MallocAlarm(nFull);
@@ -232,20 +231,19 @@ static int mallocWithAlarm(int n, void **pp){
       mem0.nearlyFull = 0;
     }
   }
-  p = sqlite3GlobalConfig.m.xMalloc(nFull);
+  p = sqlite3GlobalConfig.m.xMalloc(n);
 #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
   if( p==0 && mem0.alarmThreshold>0 ){
     sqlite3MallocAlarm(nFull);
-    p = sqlite3GlobalConfig.m.xMalloc(nFull);
+    p = sqlite3GlobalConfig.m.xMalloc(n);
   }
 #endif
   if( p ){
-    nFull = sqlite3MallocSize(p);
+    int nFull = sqlite3MallocSize(p);
     sqlite3StatusUp(SQLITE_STATUS_MEMORY_USED, nFull);
     sqlite3StatusUp(SQLITE_STATUS_MALLOC_COUNT, 1);
   }
   *pp = p;
-  return nFull;
 }
 
 /*