After, synchronize_rcu() must be called. When it returns, the old
values are not in usage anymore.
+Being careful with signals
-Usage of DEBUG_FULL_MB
+ The library uses signals internally. The signal handler is
+ registered with the SA_RESTART flag. However, these signals may cause
+ some non-restartable system calls to fail with errno = EINTR. Care
+ should be taken to restart system calls manually if they fail with this
+ error. A list of non-restartable system calls may be found in
+ signal(7). To ensure the Userspace RCU library does not use signals,
+ define CONFIG_URCU_AVOID_SIGNALS at compile-time.
- DEBUG_FULL_MB uses full SMP barriers for readers. This eliminates the
- need for signals but results in slower reads.
+Usage of CONFIG_URCU_AVOID_SIGNALS
+
+ CONFIG_URCU_AVOID_SIGNALS uses full SMP barriers for readers. This
+ eliminates the need for signals but results in slower reads.
Usage of DEBUG_YIELD
DEBUG_YIELD is used to add random delays in the code for testing
purposes.
-