File 0495-Don-t-use-too-many-reductions-in-lists-rev... of Package erlang

Overview Repositories Revisions Requests Users Attributes Meta

File 0495-Don-t-use-too-many-reductions-in-lists-reverse-2.patch of Package erlang (Revision b1dff5cbf87755f120bfe931af793e05)

Currently displaying revision b1dff5cbf87755f120bfe931af793e05 , Show latest

From d61d422d4211b5b319ca6d5dee2cc63dbfeff538 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20H=C3=B6gberg?= <john@erlang.org>
Date: Fri, 9 Nov 2018 10:07:23 +0100
Subject: [PATCH 2/2] Don't use too many reductions in lists:reverse/2

---
 erts/emulator/beam/erl_bif_lists.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/erts/emulator/beam/erl_bif_lists.c b/erts/emulator/beam/erl_bif_lists.c
index 735ad3cae3..9b6b84d000 100644
--- a/erts/emulator/beam/erl_bif_lists.c
+++ b/erts/emulator/beam/erl_bif_lists.c
@@ -1082,7 +1082,7 @@ static BIF_RETTYPE lists_reverse_alloc(Process *c_p,
     list = list_in;
     tail = tail_in;
 
-    cells_left = max_cells = CELLS_PER_RED * (1 + ERTS_BIF_REDS_LEFT(c_p));
+    cells_left = max_cells = CELLS_PER_RED * ERTS_BIF_REDS_LEFT(c_p);
     lookahead = list;
 
     while (cells_left != 0 && is_list(lookahead)) {
@@ -1131,7 +1131,7 @@ static BIF_RETTYPE lists_reverse_onheap(Process *c_p,
     list = list_in;
     tail = tail_in;
 
-    cells_left = max_cells = CELLS_PER_RED * (1 + ERTS_BIF_REDS_LEFT(c_p));
+    cells_left = max_cells = CELLS_PER_RED * ERTS_BIF_REDS_LEFT(c_p);
 
     ASSERT(HEAP_LIMIT(c_p) >= HEAP_TOP(c_p) + 2);
     alloc_start = HEAP_TOP(c_p);
-- 
2.16.4

Places

File 0495-Don-t-use-too-many-reductions-in-lists-reverse-2.patch of Package erlang (Revision b1dff5cbf87755f120bfe931af793e05)

Places