diff options
Diffstat (limited to 'lib/stdlib/doc/src/gen_statem.xml')
| -rw-r--r-- | lib/stdlib/doc/src/gen_statem.xml | 193 |
1 files changed, 57 insertions, 136 deletions
diff --git a/lib/stdlib/doc/src/gen_statem.xml b/lib/stdlib/doc/src/gen_statem.xml index 5f9ec6736e..9cddce98da 100644 --- a/lib/stdlib/doc/src/gen_statem.xml +++ b/lib/stdlib/doc/src/gen_statem.xml @@ -207,19 +207,19 @@ erlang:'!' -----> Module:StateName/5 </seealso> above. </p> <p>It can be:</p> - <list type="bulleted"> - <item>the <c>pid()</c>,</item> - <item><c><anno>Name</anno></c>, - if the gen_statem is locally registered, - </item> - <item><c>{<anno>Name</anno>,<anno>Node</anno>}</c>, - if the gen_statem is locally registered at another node, or + <taglist> + <tag><c>pid()</c></tag> + <tag><c>LocalName</c></tag> + <item>The gen_statem is locally registered.</item> + <tag><c>Name, Node</c></tag> + <item>The gen_statem is locally registered on another node. </item> - <item><c>{global,<anno>GlobalName</anno>}</c>, - if the gen_statem is globally registered. + <tag><c>GlobalName</c></tag> + <item>The gen_statem is globally registered + in <seealso marker="kernel:global"><c>global</c></seealso>. </item> - <item><c>{via,<anno>RegMod</anno>,<anno>ViaName</anno>}</c>, - if the gen_statem is registered through + <tag><c>RegMod, ViaName</c></tag> + <item>The gen_statem is registered through an alternative process registry. The registry callback module <c>RegMod</c> should export the functions @@ -230,7 +230,7 @@ erlang:'!' -----> Module:StateName/5 Thus, <c>{via,global,GlobalName}</c> is the same as <c>{global,GlobalName}</c>. </item> - </list> + </taglist> </desc> </datatype> <datatype> @@ -268,9 +268,10 @@ erlang:'!' -----> Module:StateName/5 <name name="client" /> <desc> <p>Client address to use when replying through for example the - <seealso marker="#type-state_op">state_op()</seealso> - <c>{reply,Client,Reply}</c> to a client - that has called the gen_statem server using + <seealso marker="#type-state_op"> + state_op() {reply,Client,Reply} + </seealso> + to a client that has called the gen_statem server using <seealso marker="#call/2">call/2</seealso>. </p> </desc> @@ -426,7 +427,6 @@ erlang:'!' -----> Module:StateName/5 </p> <taglist> <tag><c>postpone</c></tag> - <tag><c>{postpone,<anno>Postpone</anno>}</c></tag> <item>If <c><anno>Postpone</anno> =:= true</c> or plain <c>postpone</c> postpone the current event to be retried after a state change. @@ -437,7 +437,6 @@ erlang:'!' -----> Module:StateName/5 since there is no event to postpone in those cases. </item> <tag><c>hibernate</c></tag> - <tag><c>{hibernate,<anno>Hibernate</anno>}</c></tag> <item>If <c><anno>Hibernate</anno> =:= true</c> or plain <c>hibernate</c> hibernate the gen_statem by calling <seealso marker="proc_lib#hibernate/3"> @@ -447,17 +446,16 @@ erlang:'!' -----> Module:StateName/5 is ignored as if an event just arrived and awakened the gen_statem. </item> - <tag> - <c>{timeout,<anno>Time</anno>,<anno>Msg</anno>}</c> + <tag><c>timeout</c> </tag> <item>Generate an event of <seealso marker="#type-event_type">type <c>timeout</c></seealso> after <c><anno>Time</anno></c> milliseconds unless some other event is received before that time. Note that a retried event counts just like a new in this respect. - If <c>Time =:= infinity</c> or <c>Time =:= 0</c> - no timer is started but for zero time the timeout - event is immediately enqueued as the newest received. + If <c>Time =:= infinity</c> no timer is started. + If <c>Time =:= 0</c> the timeout event + is immediately enqueued as the newest received. Also note that it is not possible nor needed to cancel this timeout using the <seealso marker="#type-state_operation"> @@ -480,58 +478,45 @@ erlang:'!' -----> Module:StateName/5 and for <c>reply_operation()</c> that the order may matter. </p> <taglist> - <tag> - <c> - {next_event,<anno>EventType</anno>,<anno>EventContent</anno>} - </c> - </tag> - <item>Insert the given event as the next to process. + <tag><c>next_event</c></tag> + <item>Insert the given <c><anno>EventType</anno></c> + and <c><anno>EventContent</anno></c> the next to process. An event of type <seealso marker="#type-event_type"> <c>internal</c> </seealso> should be used when you want to reliably distinguish an event inserted this way from any external event. </item> - <tag> - <c> - {remove_event,<anno>EventType</anno>,<anno>EventContent</anno>} - </c> - </tag> + <tag><c>remove_event</c></tag> <item>Remove the oldest queued event - that matches equal to the given event. - </item> - <tag> - <c> - {remove_event,<anno>EventPredicate</anno>} - </c> - </tag> - <item>Remove the oldest queued event for which - the <c><anno>EventPredicate</anno></c> returns <c>true</c>. + that matches equal to <c><anno>EventType</anno></c> + and <c><anno>EventContent</anno></c> or for which + <c><anno>EventPredicate</anno></c> returns <c>true</c>. </item> - <tag><c>{cancel_timer,<anno>TimerRef</anno>}</c></tag> - <item>Uses <c><anno>TimerRef</anno></c> when calling + <tag><c>cancel_timer</c></tag> + <item>Cancel the timer by calling <seealso marker="erts:erlang#cancel_timer/2"> <c>erlang:cancel_timer/2</c> - </seealso> to cancel a timer, cleans the gen_statem's - message queue from any late timeout message from - the timer, and removes any late timeout message - from the queued events using + </seealso> with <c><anno>TimerRef</anno></c>, + clean the process message queue from any late timeout message, + and removes any late timeout message + from the gen_statem event queue using <c>{remove_event,<anno>EventPredicate</anno>}</c> above. This is a convenience function that saves quite some lines of code and testing time over doing it from the primitives mentioned above. </item> - <tag><c>{demonitor,<anno>MonitorRef</anno>}</c></tag> - <item>Like <c>{cancel_timer,_}</c> above but for + <tag><c>demonitor</c></tag> + <item>Like <c>cancel_timer</c> above but for <seealso marker="erts:erlang#demonitor/2"> <c>demonitor/2</c> - </seealso>. + </seealso> with <c><anno>MonitorRef</anno></c>. </item> <tag><c>{unlink,<anno>Id</anno>}</c></tag> <item>Like <c>{cancel_timer,_}</c> above but for <seealso marker="erts:erlang#unlink/1"> <c>unlink/1</c> - </seealso>. + </seealso> with <c><anno>Id</anno></c>. </item> </taglist> </desc> @@ -539,109 +524,45 @@ erlang:'!' -----> Module:StateName/5 <datatype> <name name="reply_operation" /> <desc> - <taglist> - <tag> - <c>{reply,<anno>Client</anno>,<anno>Reply</anno>}</c> - </tag> - <item>Reply to a client that called - <seealso marker="#call/2"><c>call/2</c></seealso>. - <c><anno>Client</anno></c> must be the term from the - <seealso marker="#type-event_type"> - <c>{call,<anno>Client</anno>}</c> - </seealso> argument to the - <seealso marker="#state_function">state function</seealso>. - </item> - </taglist> + <p>Reply to a client that called + <seealso marker="#call/2"><c>call/2</c></seealso>. + <c><anno>Client</anno></c> must be the term from the + <seealso marker="#type-event_type"> + <c>{call,<anno>Client</anno>}</c> + </seealso> argument to the + <seealso marker="#state_function">state function</seealso>. + </p> </desc> </datatype> <datatype> <name name="state_callback_result" /> <desc> <taglist> - <tag> - <c>{stop,<anno>Reason</anno>}</c> - </tag> - <item>The same as - <c>{stop,<anno>Reason</anno>,[],StateData}</c> - but keeps the old <c>StateData</c>. - </item> - <tag> - <c>{stop,<anno>Reason</anno>,<anno>NewStateData</anno>}</c> - </tag> - <item>The same as - <c>{stop,<anno>Reason</anno>,[],<anno>NewStateData</anno>}</c> - </item> - <tag><c>{stop, - <anno>Reason</anno>, - <anno>Replies</anno>, - <anno>NewStateData</anno>}</c> - </tag> - <item>The gen_statem will first send all - <c><anno>Replies</anno></c> and then terminate by calling + <tag><c>stop</c></tag> + <item>Send all <c><anno>Replies</anno></c> if given, + then terminate the gen_statem by calling <seealso marker="#Module:terminate/3"> <c>Module:terminate/3</c> - </seealso> with <c>Reason</c>. + </seealso> with <c>Reason</c> and + <c><anno>NewStateData</anno></c>, if given. </item> - <tag> - <c> - {next_state,<anno>NewState</anno>,<anno>NewStateData</anno>} - </c> - </tag> - <item>The same as - <c> - {next_state,<anno>NewState</anno>,<anno>NewStateData</anno>,[]} - </c> - </item> - <tag> - <c> - {next_state, - <anno>NewState</anno>, - <anno>NewStateData</anno>, - <anno>StateOps</anno>} - </c> - </tag> + <tag><c>next_state</c></tag> <item>The gen_statem will do a state transition to <c><anno>NewState</anno></c> - (which may be the same as the current state) + (which may be the same as the current state), + set <c><anno>NewStateData</anno></c> and execute all <c><anno>StateOps</anno></c> </item> - <tag> - <c> - {keep_state,<anno>NewStateData</anno>}} - </c> - </tag> - <item>The same as - <c> - {keep_state,<anno>NewStateData</anno>,[]} - </c> - </item> - <tag> - <c> - {keep_state,<anno>NewStateData</anno>,<anno>StateOps</anno>} - </c> - </tag> + <tag><c>keep_state</c></tag> <item>The gen_statem will keep the current state, or do a state transition to the current state if you like, + set <c><anno>NewStateData</anno></c> and execute all <c><anno>StateOps</anno></c> </item> - <tag> - <c> - {keep_state_and_data} - </c> - </tag> - <item>The same as - <c> - {keep_state_and_data,[]} - </c> - </item> - <tag> - <c> - {keep_state_and_data,<anno>StateOps</anno>} - </c> - </tag> + <tag><c>keep_state_and_data</c></tag> <item>The gen_statem will keep the current state, or do a state transition to the current state if you like, - also keep the current state data, + keep the current state data, and execute all <c><anno>StateOps</anno></c> </item> </taglist> |