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path: root/src/allocators/glibc/glibc_2.29_no_passive_falsesharing.patch
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Diffstat (limited to 'src/allocators/glibc/glibc_2.29_no_passive_falsesharing.patch')
-rw-r--r--src/allocators/glibc/glibc_2.29_no_passive_falsesharing.patch30
1 files changed, 30 insertions, 0 deletions
diff --git a/src/allocators/glibc/glibc_2.29_no_passive_falsesharing.patch b/src/allocators/glibc/glibc_2.29_no_passive_falsesharing.patch
new file mode 100644
index 0000000..7d0f23f
--- /dev/null
+++ b/src/allocators/glibc/glibc_2.29_no_passive_falsesharing.patch
@@ -0,0 +1,30 @@
+diff --git a/malloc/malloc.c b/malloc/malloc.c
+index 0abd653be2..eaefd3bd7c 100644
+--- a/malloc/malloc.c
++++ b/malloc/malloc.c
+@@ -4194,6 +4194,9 @@ _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)
+ {
+@@ -4223,6 +4226,7 @@ _int_free (mstate av, mchunkptr p, int have_lock)
+ return;
+ }
+ }
++ }
+ }
+ #endif
+
+@@ -4997,6 +5001,7 @@ __malloc_stats (void)
+ memset (&mi, 0, sizeof (mi));
+ __libc_lock_lock (ar_ptr->mutex);
+ int_mallinfo (ar_ptr, &mi);
++ fprintf (stderr, "false sharing path by muhq\n");
+ fprintf (stderr, "Arena %d:\n", i);
+ fprintf (stderr, "system bytes = %10u\n", (unsigned int) mi.arena);
+ fprintf (stderr, "in use bytes = %10u\n", (unsigned int) mi.uordblks);