X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=README;h=a2cc296a480fe768d0b318cf9dcdd32002b656f6;hb=48d848c7291ec22da6258ac03cd9c1dafec1fdfb;hp=966006613215c8d1ee1415dcca6de46860edb84c;hpb=4c1471decfbd2c3a82c71a967728f3ba096b52c8;p=urcu.git diff --git a/README b/README index 9660066..a2cc296 100644 --- a/README +++ b/README @@ -4,6 +4,8 @@ by Mathieu Desnoyers and Paul E. McKenney BUILDING -------- + ./bootstrap (skip if using tarball) + ./configure make make install @@ -31,7 +33,7 @@ Usage of liburcu Usage of liburcu-mb * #include - * Compile code with "-DURCU_MB" + * Compile any _LGPL_SOURCE code using this library with "-DURCU_MB". * Link with "-lurcu-mb". * This version of the urcu library does not need to reserve a signal number. URCU_MB uses full memory barriers for @@ -48,6 +50,17 @@ Usage of liburcu-qsbr the threads are not active. It provides the fastest read-side at the expense of more intrusiveness in the application code. +Usage of liburcu-bp + + * #include + * Link with "-lurcu-bp". + * The BP library flavor stands for "bulletproof". It is specifically + designed to help tracing library to hook on applications without + requiring to modify these applications. urcu_init(), + rcu_register_thread() and rcu_unregister_thread() all become nops. + The state is dealt with by the library internally at the expense of + read-side and write-side performance. + Initialization Each thread that has reader critical sections (that uses @@ -68,6 +81,15 @@ Writing After, synchronize_rcu() must be called. When it returns, the old values are not in usage anymore. +Usage of liburcu-defer + + * #include + * Link with "-lurcu-defer" + * Provides call_rcu() primitive to enqueue delayed callbacks. Queued + callbacks are executed in batch periodically after a grace period. + Do _not_ use call_rcu() within a read-side critical section, because + it may call synchronize_rcu() if the thread queue is full. + Being careful with signals The liburcu library uses signals internally. The signal handler is