diff options
author | Craig Tiller <ctiller@google.com> | 2016-03-02 22:17:24 -0800 |
---|---|---|
committer | Craig Tiller <ctiller@google.com> | 2016-03-02 22:34:23 -0800 |
commit | 0cb803d9ca4286601e9e6a3240cfa3488b662b7c (patch) | |
tree | 9c5000567bd52328ed9827c9e2e5a8c671d94158 /src/core/support/sync.c | |
parent | bfc8a8d0496c1e505815772b623760a2ecf1e4d0 (diff) |
Always ref writable streams
We suffered a bug whereby doing a follow-up write to another write could
resurrect a deleted stream, causing all sorts of crash.
Fix: when a stream becomes writable (vs when we start writing) take a
ref on the stream, and only relinquish it once we're done writing.
Diffstat (limited to 'src/core/support/sync.c')
-rw-r--r-- | src/core/support/sync.c | 7 |
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); } |