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-rw-r--r--src/core/support/sync.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/core/support/sync.c b/src/core/support/sync.c
index d368422d9e..69e3e39c5c 100644
--- a/src/core/support/sync.c
+++ b/src/core/support/sync.c
@@ -1,6 +1,6 @@
/*
*
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -98,6 +98,11 @@ void gpr_ref_init(gpr_refcount *r, int n) { gpr_atm_rel_store(&r->count, n); }
void gpr_ref(gpr_refcount *r) { gpr_atm_no_barrier_fetch_add(&r->count, 1); }
+void gpr_ref_non_zero(gpr_refcount *r) {
+ gpr_atm prior = gpr_atm_no_barrier_fetch_add(&r->count, 1);
+ GPR_ASSERT(prior > 0);
+}
+
void gpr_refn(gpr_refcount *r, int n) {
gpr_atm_no_barrier_fetch_add(&r->count, n);
}