Comment enhancements and typo fixes in pcache1.c.

FossilOrigin-Name: c2dc39c0c4673a39f5fe6e643acb3bcf4ca22265

manifest

@@ -1,5 +1,8 @@
-C Fixes\sto\sallow\sfts3\stables\sto\sbe\srenamed\smid-transaction.
-D 2010-08-24T16:59:48
+-----BEGIN PGP SIGNED MESSAGE-----
+Hash: SHA1
+
+C Comment\senhancements\sand\stypo\sfixes\sin\spcache1.c.
+D 2010-08-24T18:06:36
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 543f91f24cd7fee774ecc0a61c19704c0c3e78fd
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -161,7 +164,7 @@ F src/pager.h ef8c8f71ab022cc2fff768a1175dd32355be9dcd
 F src/parse.y 12b7ebd61ea54f0e1b1083ff69cc2c8ce9353d58
 F src/pcache.c 1e9aa2dbc0845b52e1b51cc39753b6d1e041cb07
 F src/pcache.h c683390d50f856d4cd8e24342ae62027d1bb6050
-F src/pcache1.c e921e8a1d52c93abde63cb6dad1fa39770410c52
+F src/pcache1.c 367d88f7924fee4fd3d23161c4c7552df7139a1f
 F src/pragma.c 8b24ce00a93de345b6c3bd1e1e2cfba9f63d2325
 F src/prepare.c ce4c35a2b1d5fe916e4a46b70d24a6e997d7c4c6
 F src/printf.c 8ae5082dd38a1b5456030c3755ec3a392cd51506
@@ -846,7 +849,14 @@ F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
 F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
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manifest.uuid

@@ -1 +1 @@
-d1c875320a045c3938c765ceb543dfba1a0ecf0b
+c2dc39c0c4673a39f5fe6e643acb3bcf4ca22265

src/pcache1.c

@@ -23,8 +23,13 @@ typedef struct PCache1 PCache1;
 typedef struct PgHdr1 PgHdr1;
 typedef struct PgFreeslot PgFreeslot;
 
-/* Pointers to structures of this type are cast and returned as 
-** opaque sqlite3_pcache* handles
+/* Each page cache is an instance of the following object.  Every
+** open database file (including each in-memory database and each
+** temporary or transient database) has a single page cache which
+** is an instance of this object.
+**
+** Pointers to structures of this type are cast and returned as 
+** opaque sqlite3_pcache* handles.
 */
 struct PCache1 {
   /* Cache configuration parameters. Page size (szPage) and the purgeable
@@ -202,7 +207,7 @@ static void pcache1Free(void *p){
 
 #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
 /*
-** Return the size of a pache allocation
+** Return the size of a pcache allocation
 */
 static int pcache1MemSize(void *p){
   assert( sqlite3_mutex_held(pcache1.mutex) );