diff options
Diffstat (limited to 'lib/stdlib/doc/src/supervisor.xml')
| -rw-r--r-- | lib/stdlib/doc/src/supervisor.xml | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/lib/stdlib/doc/src/supervisor.xml b/lib/stdlib/doc/src/supervisor.xml index 6d5065ca02..f15b1a2dd3 100644 --- a/lib/stdlib/doc/src/supervisor.xml +++ b/lib/stdlib/doc/src/supervisor.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>1996</year><year>2017</year> + <year>1996</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -28,7 +28,7 @@ <date></date> <rev></rev> </header> - <module>supervisor</module> + <module since="">supervisor</module> <modulesummary>Generic supervisor behavior.</modulesummary> <description> <p>This behavior module provides a supervisor, a process that @@ -208,8 +208,16 @@ child_spec() = #{id => child_id(), % mandatory the child process is unconditionally terminated using <c>exit(Child,kill)</c>.</p> <p>If the child process is another supervisor, the shutdown time - is to be set to <c>infinity</c> to give the subtree ample - time to shut down. It is also allowed to set it to <c>infinity</c>, + must be set to <c>infinity</c> to give the subtree ample + time to shut down.</p> + <warning> + <p>Setting the shutdown time to anything other + than <c>infinity</c> for a child of type <c>supervisor</c> + can cause a race condition where the child in question + unlinks its own children, but fails to terminate them + before it is killed.</p> + </warning> + <p>It is also allowed to set it to <c>infinity</c>, if the child process is a worker.</p> <warning> <p>Be careful when setting the shutdown time to @@ -310,7 +318,7 @@ child_spec() = #{id => child_id(), % mandatory <funcs> <func> - <name name="check_childspecs" arity="1"/> + <name name="check_childspecs" arity="1" since=""/> <fsummary>Check if children specifications are syntactically correct. </fsummary> <desc> @@ -321,7 +329,7 @@ child_spec() = #{id => child_id(), % mandatory </func> <func> - <name name="count_children" arity="1"/> + <name name="count_children" arity="1" since="OTP R13B04"/> <fsummary>Return counts for the number of child specifications, active children, supervisors, and workers.</fsummary> <desc> @@ -358,7 +366,7 @@ child_spec() = #{id => child_id(), % mandatory </func> <func> - <name name="delete_child" arity="2"/> + <name name="delete_child" arity="2" since=""/> <fsummary>Delete a child specification from a supervisor.</fsummary> <desc> <p>Tells supervisor <c><anno>SupRef</anno></c> to delete the child @@ -379,7 +387,7 @@ child_spec() = #{id => child_id(), % mandatory </func> <func> - <name name="get_childspec" arity="2"/> + <name name="get_childspec" arity="2" since="OTP 18.0"/> <fsummary>Return the child specification map for the specified child.</fsummary> <desc> @@ -392,7 +400,7 @@ child_spec() = #{id => child_id(), % mandatory </func> <func> - <name name="restart_child" arity="2"/> + <name name="restart_child" arity="2" since=""/> <fsummary>Restart a terminated child process belonging to a supervisor. </fsummary> <desc> @@ -428,7 +436,7 @@ child_spec() = #{id => child_id(), % mandatory </func> <func> - <name name="start_child" arity="2"/> + <name name="start_child" arity="2" since=""/> <fsummary>Dynamically add a child process to a supervisor.</fsummary> <type name="startchild_ret"/> <type name="startchild_err"/> @@ -495,8 +503,8 @@ child_spec() = #{id => child_id(), % mandatory </func> <func> - <name name="start_link" arity="2"/> - <name name="start_link" arity="3"/> + <name name="start_link" arity="2" since=""/> + <name name="start_link" arity="3" since=""/> <fsummary>Create a supervisor process.</fsummary> <type name="startlink_ret"/> <type name="startlink_err"/> @@ -576,7 +584,7 @@ child_spec() = #{id => child_id(), % mandatory </func> <func> - <name name="terminate_child" arity="2"/> + <name name="terminate_child" arity="2" since=""/> <fsummary>Terminate a child process belonging to a supervisor.</fsummary> <desc> <p>Tells supervisor <c><anno>SupRef</anno></c> to terminate the @@ -613,7 +621,7 @@ child_spec() = #{id => child_id(), % mandatory </func> <func> - <name name="which_children" arity="1"/> + <name name="which_children" arity="1" since=""/> <fsummary>Return information about all children specifications and child processes belonging to a supervisor.</fsummary> <desc> @@ -658,7 +666,7 @@ child_spec() = #{id => child_id(), % mandatory <funcs> <func> - <name>Module:init(Args) -> Result</name> + <name since="">Module:init(Args) -> Result</name> <fsummary>Return a supervisor specification.</fsummary> <type> <v>Args = term()</v> |