From 4dce7f31c7b547c27d83e19336999475b401d01e Mon Sep 17 00:00:00 2001
From: Andrea Shepard <andrea@special-circumstanc.es>
Date: Sun, 12 Jan 2020 03:34:34 +0000
Subject: [PATCH] Packrat backend stats counters (off by default)
---
src/backends/packrat.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/src/backends/packrat.c b/src/backends/packrat.c
index 1941f1c9..ab0f8748 100644
--- a/src/backends/packrat.c
+++ b/src/backends/packrat.c
@@ -3,6 +3,15 @@
#include "../internal.h"
#include "../parsers/parser_internal.h"
+/* #define DETAILED_PACKRAT_STATISTICS */
+
+#ifdef DETAILED_PACKRAT_STATISTICS
+static size_t packrat_hash_count = 0;
+static size_t packrat_hash_bytes = 0;
+static size_t packrat_cmp_count = 0;
+static size_t packrat_cmp_bytes = 0;
+#endif
+
static uint32_t cache_key_hash(const void* key);
// short-hand for creating lowlevel parse cache values (parse result case)
@@ -262,17 +271,34 @@ void h_packrat_free(HParser *parser) {
}
static uint32_t cache_key_hash(const void* key) {
+#ifdef DETAILED_PACKRAT_STATISTICS
+ ++(packrat_hash_count);
+ packrat_hash_bytes += sizeof(HParserCacheKey);
+#endif
return h_djbhash(key, sizeof(HParserCacheKey));
}
+
static bool cache_key_equal(const void* key1, const void* key2) {
+#ifdef DETAILED_PACKRAT_STATISTICS
+ ++(packrat_cmp_count);
+ packrat_cmp_bytes += sizeof(HParserCacheKey);
+#endif
return memcmp(key1, key2, sizeof(HParserCacheKey)) == 0;
}
static uint32_t pos_hash(const void* key) {
+#ifdef DETAILED_PACKRAT_STATISTICS
+ ++(packrat_hash_count);
+ packrat_hash_bytes += sizeof(HInputStream);
+#endif
return h_djbhash(key, sizeof(HInputStream));
}
static bool pos_equal(const void* key1, const void* key2) {
+#ifdef DETAILED_PACKRAT_STATISTICS
+ ++(packrat_cmp_count);
+ packrat_cmp_bytes += sizeof(HInputStream);
+#endif
return memcmp(key1, key2, sizeof(HInputStream)) == 0;
}
--
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