From ecd8bbf2c0b7a4ca20c9cdc5f8f26836d4082c36 Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano@tronto.net>
Date: Thu, 3 Mar 2022 19:02:08 +0100
Subject: Added messages about generating pruning tables

---
 src/pruning.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'src/pruning.c')

diff --git a/src/pruning.c b/src/pruning.c
index d484a12..869110f 100644
--- a/src/pruning.c
+++ b/src/pruning.c
@@ -135,6 +135,18 @@ genptable(PruneData *pd, int nthreads)
 		return;
 	}
 
+	if (nthreads < 4) {
+		fprintf(stderr,
+			"--- Warning ---\n"
+			"You are using only %d threads to generate the pruning"
+			"tables. This can take a while."
+			"Unless you did this intentionally, you should re-run"
+			"this command with `-t 4' or more.\n"
+			"---------------\n\n", nthreads
+		);
+	}
+
+
 	/* For the first steps we proceed the same way for compact and not */
 	compact = pd->compact;
 	pd->compact = false;
@@ -144,6 +156,7 @@ genptable(PruneData *pd, int nthreads)
 	fprintf(stderr, "Cannot load %s, generating it with %d threads\n",
 			pd->filename, nthreads); 
 
+
 	memset(pd->ptable, ~(uint8_t)0, ptablesize(pd)*sizeof(entry_group_t));
 
 	ptable_update(pd, (Cube){0}, 0);
-- 
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