3 files changed, 12 insertions, 0 deletions
diff --git a/include/grpc/support/atm_gcc_atomic.h b/include/grpc/support/atm_gcc_atomic.h
index 65d3d0c60f..a2c8386028 100644
--- a/include/grpc/support/atm_gcc_atomic.h
+++ b/include/grpc/support/atm_gcc_atomic.h
@@ -46,6 +46,8 @@ typedef gpr_intptr gpr_atm;
 #define gpr_atm_no_barrier_load(p) (__atomic_load_n((p), __ATOMIC_RELAXED))
 #define gpr_atm_rel_store(p, value) \
   (__atomic_store_n((p), (gpr_intptr)(value), __ATOMIC_RELEASE))
+#define gpr_atm_no_barrier_store(p, value) \
+  (__atomic_store_n((p), (gpr_intptr)(value), __ATOMIC_RELAXED))
 
 #define gpr_atm_no_barrier_fetch_add(p, delta) \
   (__atomic_fetch_add((p), (gpr_intptr)(delta), __ATOMIC_RELAXED))
diff --git a/include/grpc/support/atm_gcc_sync.h b/include/grpc/support/atm_gcc_sync.h
index 4955e4436f..38b5a9eec2 100644
--- a/include/grpc/support/atm_gcc_sync.h
+++ b/include/grpc/support/atm_gcc_sync.h
@@ -68,6 +68,11 @@ static __inline void gpr_atm_rel_store(gpr_atm *p, gpr_atm value) {
   *p = value;
 }
 
+static __inline void gpr_atm_no_barrier_store(gpr_atm *p, gpr_atm value) {
+  GPR_ATM_COMPILE_BARRIER_();
+  *p = value;
+}
+
 #undef GPR_ATM_LS_BARRIER_
 #undef GPR_ATM_COMPILE_BARRIER_
 
diff --git a/include/grpc/support/atm_win32.h b/include/grpc/support/atm_win32.h
index da99021c24..694528a9ba 100644
--- a/include/grpc/support/atm_win32.h
+++ b/include/grpc/support/atm_win32.h
@@ -57,6 +57,11 @@ static __inline void gpr_atm_rel_store(gpr_atm *p, gpr_atm value) {
   *p = value;
 }
 
+static __inline void gpr_atm_no_barrier_store(gpr_atm *p, gpr_atm value) {
+  /* TODO(ctiller): Can we implement something better here? */
+  gpr_atm_rel_store(p, value);
+}
+
 static __inline int gpr_atm_no_barrier_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
 /* InterlockedCompareExchangePointerNoFence() not available on vista or
    windows7 */