add glibc allocator definitions

2 files changed, 62 insertions, 0 deletions

diff --git a/allocators/glibc_2.28_no_passive_falsesharing_fancy.patch b/allocators/glibc_2.28_no_passive_falsesharing_fancy.patch
new file mode 100644
index 0000000..044909b
--- /dev/null
+++ b/allocators/glibc_2.28_no_passive_falsesharing_fancy.patch
@@ -0,0 +1,25 @@
+diff --git a/malloc/malloc.c b/malloc/malloc.c
+index 27cf6137c2..fbd311801d 100644
+--- a/malloc/malloc.c
++++ b/malloc/malloc.c
+@@ -4172,6 +4172,12 @@ _int_free (mstate av, mchunkptr p, int have_lock)
+ 
+ #if USE_TCACHE
+   {
++    /* Check if chunk is from our own arena or false sharing is not possible
++       because the chunk is cache line aligned and it's size is a multiple
++       of a cacheline  */
++    if (av == thread_arena
++        || (((size_t)p & 63) == 0 && ((size + 2*SIZE_SZ) % 64) == 0))
++      {
+     size_t tc_idx = csize2tidx (size);
+     if (tcache != NULL && tc_idx < mp_.tcache_bins)
+       {
+@@ -4201,6 +4207,7 @@ _int_free (mstate av, mchunkptr p, int have_lock)
+ 	    return;
+ 	  }
+       }
++      }
+   }
+ #endif
+ 
diff --git a/allocators/glibcs.py b/allocators/glibcs.py
new file mode 100644
index 0000000..891bf15
--- /dev/null
+++ b/allocators/glibcs.py
@@ -0,0 +1,37 @@
+import os
+import subprocess
+
+from src.allocator import *
+from src.allocator import Allocator as Alloc
+from src.allocator import Allocator_Sources as Alloc_Src
+
+optimisation_flag = "-O2"
+
+glibc_src = Alloc_Src("glibc",
+                      retrieve_cmds=["git clone git://sourceware.org/git/glibc.git"],
+                      prepare_cmds=["git checkout release/2.29/master"],
+                      reset_cmds=["git stash"])
+
+glibc = Alloc("glibc", sources=glibc_src,
+              build_cmds=["mkdir -p glibc-build",
+                          "cd glibc-build; {srcdir}/configure --prefix={dir}",
+                          "cd glibc-build; make",
+                          "cd glibc-build; make install"],
+              cmd_prefix="{dir}/lib/ld-linux-x86-64.so.2 --library-path {dir}/lib:"+library_path)
+
+glibc_notc = Alloc("glibc_notc", sources=glibc_src,
+              build_cmds=["mkdir -p glibc-build",
+                          "cd glibc-build; {srcdir}/configure --prefix={dir} --disable-experimental-malloc",
+                          "cd glibc-build; make",
+                          "cd glibc-build; make install"],
+              cmd_prefix="{dir}/lib/ld-linux-x86-64.so.2 --library-path {dir}/lib:"+library_path)
+
+glibc_nofs = patch_alloc("glibc_nofs", glibc,
+                           ["allocators/glibc_2.28_no_passive_falsesharing.patch"])
+
+glibc_nofs_fancy = patch_alloc("glibc_nofs_fancy", glibc,
+                           ["allocators/glibc_2.28_no_passive_falsesharing_fancy.patch"])
+
+allocators_to_build = [glibc, glibc_notc, glibc_nofs, glibc_nofs_fancy]
+
+allocators = {a.name: a.build() for a in allocators_to_build}