Fix comments in simplehash.h.

Jeff Janes and me.

Discussion: https://www.postgresql.org/message-id/CAMkU=1zYnniLYg+W9itL93DXebCjx6Uk6m_=Xa8p_zM65X3S0Q@mail.gmail.com

diff --git a/src/include/lib/simplehash.h b/src/include/lib/simplehash.h
index a35addf636d152f40a19d51180b45cadaac18279..47dd0bc4eefd594a0967cfbfcb16bab77ce4e979 100644 (file)
--- a/src/include/lib/simplehash.h
+++ b/src/include/lib/simplehash.h
@@ -214,12 +214,12 @@ SH_COMPUTE_PARAMETERS(SH_TYPE * tb, uint32 newsize)
        /* supporting zero sized hashes would complicate matters */
        size = Max(newsize, 2);
 
-       /* round up size to the next power of 2, that's the bucketing works  */
+       /* round up size to the next power of 2, that's how bucketing works */
        size = sh_pow2(size);
        Assert(size <= SH_MAX_SIZE);
 
        /*
-        * Verify allocation of ->data is possible on platform, without
+        * Verify that allocation of ->data is possible on this platform, without
         * overflowing Size.
         */
        if ((((uint64) sizeof(SH_ELEMENT_TYPE)) * size) >= MaxAllocHugeSize)
@@ -234,8 +234,8 @@ SH_COMPUTE_PARAMETERS(SH_TYPE * tb, uint32 newsize)
                tb->sizemask = tb->size - 1;
 
        /*
-        * Compute growth threshold here and after growing the table, to make
-        * computations during insert cheaper.
+        * Compute the next threshold at which we need to grow the hash table
+        * again.
         */
        if (tb->size == SH_MAX_SIZE)
                tb->grow_threshold = ((double) tb->size) * SH_MAX_FILLFACTOR;
@@ -696,7 +696,7 @@ SH_DELETE(SH_TYPE * tb, SH_KEY_TYPE key)
                         * or an element at its optimal position is encountered.
                         *
                         * While that sounds expensive, the average chain length is short,
-                        * and deletions would otherwise require toombstones.
+                        * and deletions would otherwise require tombstones.
                         */
                        while (true)
                        {