From 4c0830ffbc045290c167e482855cb25a639df0e0 Mon Sep 17 00:00:00 2001 From: Florian Fischer Date: Sat, 9 Feb 2019 12:45:38 +0100 Subject: add allocators build support and two allocator definitions The allocators created by the file allocators/BA_allocators.py are those used in my BA thesis available at: https://muhq.space/ba.html. allocators/no_falsesharing.py builds patched versions of tcmalloc and glibc without any allocator inroduced falsesharing. --- .../glibc_2.28_no_passive_falsesharing.patch | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 allocators/glibc_2.28_no_passive_falsesharing.patch (limited to 'allocators/glibc_2.28_no_passive_falsesharing.patch') diff --git a/allocators/glibc_2.28_no_passive_falsesharing.patch b/allocators/glibc_2.28_no_passive_falsesharing.patch new file mode 100644 index 0000000..fcc695c --- /dev/null +++ b/allocators/glibc_2.28_no_passive_falsesharing.patch @@ -0,0 +1,22 @@ +diff --git a/malloc/malloc.c b/malloc/malloc.c +index 27cf6137c2..3aadaddd1d 100644 +--- a/malloc/malloc.c ++++ b/malloc/malloc.c +@@ -4172,6 +4172,9 @@ _int_free (mstate av, mchunkptr p, int have_lock) + + #if USE_TCACHE + { ++ /* Check if chunk is from our own arena. */ ++ if (av == thread_arena) ++ { + size_t tc_idx = csize2tidx (size); + if (tcache != NULL && tc_idx < mp_.tcache_bins) + { +@@ -4201,6 +4204,7 @@ _int_free (mstate av, mchunkptr p, int have_lock) + return; + } + } ++ } + } + #endif + -- cgit v1.2.3