HAM API Reference
QNX SDP8.0High Availability Framework Developer's GuideDeveloper
The High Availability Framework includes the following functions you can use in your applications to interact with a HAM:
| Function | Description |
|---|---|
| ham_action_execute() | Add an execute action to a condition. |
| ham_action_fail_execute() | Add an execute action to an action, that will be executed if the corresponding action fails. |
| ham_action_fail_log() | Insert a log message into the activity log of a HAM. |
| ham_action_fail_notify_pulse() | Add a notify pulse action to an action, that will be executed if the corresponding action fails. |
| ham_action_fail_notify_signal() | Add a notify signal action to an action, that will be executed if the corresponding action fails. |
| ham_action_fail_remove() | Remove an action-fail item from an action. |
| ham_action_fail_waitfor() | Add a waitfor action to an action, that will be executed if the corresponding action fails. |
| ham_action_handle() | Get a handle to an action in a condition in an entity. |
| ham_action_handle_free() | Free a previously obtained handle to an action in a condition in an entity. |
| ham_action_heartbeat_healthy() | Reset a heartbeat's state to healthy. |
| ham_action_log() | Insert a log message into the activity log of the HAM. |
| ham_action_notify_pulse() | Add a notify-pulse action to a condition. |
| ham_action_notify_signal() | Add a notify-signal action to a condition. |
| ham_action_remove() | Remove an action from a condition. |
| ham_action_restart() | Add a restart action to a condition. |
| ham_action_waitfor() | Add a waitfor action to a condition. |
| ham_attach() | Attach an entity. |
| ham_attach_self() | Attach an application as a self-attached entity. |
| ham_condition() | Set up a condition to be triggered when a certain event occurs. |
| ham_condition_handle() | Get a handle to a condition in an entity. |
| ham_condition_handle_free() | Free a previously obtained handle to a condition in an entity. |
| ham_condition_raise() | Attach a condition associated with a condition raise condition that is triggered by an entity raising a condition. |
| ham_condition_remove() | Remove a condition from an entity. |
| ham_condition_state() | Attach a condition associated with a state transition condition that is triggered by an entity reporting a state change. |
| ham_connect() | Connect to a HAM. |
| ham_detach() | Detach an entity from a HAM. |
| ham_detach_name() | Detach an entity from a HAM, using an entity name. |
| ham_detach_self() | Detach a self-attached entity from a HAM. |
| ham_disconnect() | Disconnect from a HAM. |
| ham_entity() | Create entity placeholder objects in a HAM. |
| ham_entity_condition_raise() | Used by an entity to raise a condition. |
| ham_entity_condition_state() | Used by an entity to notify the HAM of a state transition. |
| ham_entity_handle() | Get a handle to an entity. |
| ham_entity_handle_free() | Free a previously obtained handle to an entity. |
| ham_heartbeat() | Send a heartbeat to a HAM. |
| ham_heartbeat_control() | Check the current state of, suspend, or resume heartbeat handling in a HAM. |
| ham_stop() | Stop a HAM. |
| ham_verbose() | Modifies the verbosity of a HAM. |
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