Erlang linked in driver

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The db_driver is a high performance database driver based on the Erlang linked-in driver. It uses asynchronous threads to avoid IO block during the database access, the same way in which Erlang asynchronous drivers were implemented. We followed the syntax of Erlydb (erlang_mysql_driver) to design the APIs. For one database access request, the parameters will be passed to driver and . An Erlang driver is a library containing a set of native driver callback functions that the Erlang Virtual Machine calls when certain events occur. There can be multiple instances of a driver, each instance is associated with an Erlang port. After this call, the driver behaves as one of Erlang's statically linked-in drivers. ErlDrvTermData. Creating a Driver. Creating a linked-in driver is the most efficient way of interfacing foreign-language code with Erlang, but it is also the most dangerous. Any fatal error in the linked-in driver will crash the Erlang System. Following is an example of a driver implementation in Erlang −. Example-module(helloworld). -export([start/0, stop/0]).

The db_driver is a high performance database driver based on the Erlang linked-in driver. It uses asynchronous threads to avoid IO block during the database access, the same way in which Erlang asynchronous drivers were implemented. We followed the syntax of Erlydb (erlang_mysql_driver) to design the APIs. For one database access request, the parameters will be passed to driver and processed in asynchronous threads. gen_http driver for erlang. This module is a high efficient special linked-in driver that handled HTTP on C level. It uses www.doorway.ru code based on Nginx http parser, which is beleived to be one of the fastest on earth. gen_http has non-gen_tcp API. It has other call for opening socket, accepting connection and receiving data. Creating a Driver. Creating a linked-in driver is the most efficient way of interfacing foreign-language code with Erlang, but it is also the most dangerous. Any fatal error in the linked-in driver will crash the Erlang System. Following is an example of a driver implementation in Erlang −. Example-module(helloworld). -export([start/0, stop/0]).

Erlang compiler to HiPE (native VM extension) is written in Erlang. Erlang VM BEAM and HiPE is written mostly in C. Linked-in drivers are written mostly in. Los procesos Erlang son ligeros (crecen y se encogen dinámicamente)con una pequeña huella de o cuando linked process terminates un proceso vinculado. These programs obey the same protocol as the port drivers discussed earlier. The only difference is that the driver code is linked into the Erlang kernel.