diff options
Diffstat (limited to 'absl/strings/internal/cordz_handle.h')
| -rw-r--r-- | absl/strings/internal/cordz_handle.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/absl/strings/internal/cordz_handle.h b/absl/strings/internal/cordz_handle.h index 93076cfd..5df53c78 100644 --- a/absl/strings/internal/cordz_handle.h +++ b/absl/strings/internal/cordz_handle.h @@ -40,9 +40,20 @@ class CordzHandle { bool is_snapshot() const { return is_snapshot_; } + // Returns true if this instance is safe to be deleted because it is either a + // snapshot, which is always safe to delete, or not included in the global + // delete queue and thus not included in any snapshot. + // Callers are responsible for making sure this instance can not be newly + // discovered by other threads. For example, CordzInfo instances first de-list + // themselves from the global CordzInfo list before determining if they are + // safe to be deleted directly. + // If SafeToDelete returns false, callers MUST use the Delete() method to + // safely queue CordzHandle instances for deletion. + bool SafeToDelete() const; + // Deletes the provided instance, or puts it on the delete queue to be deleted // once there are no more sample tokens (snapshot) instances potentially - // referencing the instance. `handle` may be null. + // referencing the instance. `handle` should not be null. static void Delete(CordzHandle* handle); // Returns the current entries in the delete queue in LIFO order. |