Erlang/OTP v19.0.2 發布
OTP 是包裝在Erlang中的一組庫程序。OTP構成Erlang的行為機制(behaviours),用于編寫服務器、有限狀態機、事件管理器。不僅如此,OTP的應用行為(the application behavior)允許程序員把寫好的Erlang代碼打包成一個單獨的應用程序;監測行為(the supervisor behavior )允許程序員創建有層次結構的進程,使得某個進程死后,會重新啟動復活。
OTP提供大量通用的庫程序,用以輕松創建具有高度容錯、熱機換碼等功能的高質高效的程序。主要特點:
- 通用服務器、有限狀態機、事件管理器;
- 標準化應用程序結構;
- 代碼熱機更換;
- 監測樹行為機制,讓你的進程永不停擺。
更新日志
- compiler, stdlib:
- New preprocessor macros ?FUNCTION_NAME, ?FUNCTION_ARITY
- New preprocessor directives -error(Term) and -warning(Term) to cause a compilation error or warning, respectively.
- gen_statem a new state machine behavior
- mnesia_ext: plugin of external storage solutions to mnesia
- crypto: uses EVP interface in OpenSSL resulting in generally better performance and support for HW acceleration
- ssh: performance improvements, uses the new gen_statem behavior
- ssl: enhanced error log messages
- dialyzer: the support for maps is very much extended both the type specification syntax and the type analysis.
- erts:
- erlang:open_port(spawn, ...) 3-5 times faster
- tracing, extensive improvements (scalability, speed, match specifications on send/receive, support for lttng, ...)
- dirty schedulers improved
- per process configurable handling of message_queue
- fast loading of multiple modules
- max_heap_size process flag
- erts/kernel:
Experimental support for Unix Domain Sockets
Example:
gen_udp:open(0, [{ifaddr,{local,"/tmp/socket"}}])
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