Minor tweak to block allocator to remove pointless BLOCK_INVALID header.

3 files changed, 7 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index eb601525..62b956a9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2017-01-26         Andrew J. Schorr     <aschorr@telemetry-investments.com>
+
+	* awk.h (enum block_id): Remove BLOCK_INVALID, since it serves no
+	useful purpose and seems to slow things down a bit.
+	* node.c (nextfree): Remove first invalid entry.
+
 2017-01-25         Andrew J. Schorr     <aschorr@telemetry-investments.com>
 
 	* awk.h (BLOCK): Remove typedef. BLOCK was used for 2 different
diff --git a/awk.h b/awk.h
index 66163519..199aba38 100644
--- a/awk.h
+++ b/awk.h
@@ -1060,8 +1060,7 @@ struct block_header {
 };
 
 enum block_id {
-	BLOCK_INVALID = 0,	/* not legal */
-	BLOCK_NODE,
+	BLOCK_NODE = 0,
 	BLOCK_BUCKET,
 	BLOCK_MAX	/* count */
 };
diff --git a/node.c b/node.c
index f1f80177..d7ed98ea 100644
--- a/node.c
+++ b/node.c
@@ -1002,7 +1002,6 @@ void init_btowc_cache()
 #define BLOCKCHUNK 100
 
 struct block_header nextfree[BLOCK_MAX] = {
-	{ NULL, 0},	/* invalid */
 	{ NULL, sizeof(NODE) },
 	{ NULL, sizeof(BUCKET) },
 };