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Diffstat (limited to 'longbow/src/LongBow/longBow_Event.h')
-rwxr-xr-x | longbow/src/LongBow/longBow_Event.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/longbow/src/LongBow/longBow_Event.h b/longbow/src/LongBow/longBow_Event.h new file mode 100755 index 00000000..12f903c0 --- /dev/null +++ b/longbow/src/LongBow/longBow_Event.h @@ -0,0 +1,152 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/** + * @file longBow_Event.h + * @ingroup internals + * @brief LongBow Event Support. + * + * LongBow assertions, traps and tests induce "events" which are experienced by the programme runtime as signals or long-jumps. + * + */ +#ifndef LongBow_longBow_Event_h +#define LongBow_longBow_Event_h + +#include <stdlib.h> +#include <stdbool.h> + +#include <LongBow/longBow_EventType.h> +#include <LongBow/longBow_Location.h> +#include <LongBow/longBow_Backtrace.h> + +struct longbow_event; + +/** + * @typedef LongBowEvent + */ +typedef struct longbow_event LongBowEvent; + +/** + * Get the `LongBowEventType` of a LongBowEvent. + * + * @param [in] event A `LongBowEvent` instance. + * + * @return A pointer to the LongBowEventType of the event. + * + * Example: + * @code + * { + * LongBowEvent *event = ... + * LongBowEventType type = longBowEvent_GetEventType(event); + * } + * @endcode + */ +const LongBowEventType *longBowEvent_GetEventType(const LongBowEvent *event); + +/** + * Create a `LongBowEvent`. + * + * Creating a `LongBowEvent` records runtime data and used by report facilities. + * This does not actually cause the process to assert the assertion. + * + * @param [in] eventType The LongBowEventType for this event. + * @param [in] location A LongBowLocation instance recording the location of the event. + * @param [in] kind A string representing the kind of event. + * @param [in] message A message to display. This will be freed via free(3). + * @param [in] backtrace A pointer to a valid LongBowBacktrace instance. + * + * @return An allocated LongBowEvent which must be destroyed via `longBowEvent_Destroy()`. + */ +LongBowEvent *longBowEvent_Create(const LongBowEventType *eventType, const LongBowLocation *location, const char *kind, const char *message, const LongBowBacktrace *backtrace); + +/** + * Destroy a `LongBowEvent`. + * + * The value pointed to by `eventPtr`, is set to `NULL. + * + * @param [in,out] eventPtr The `LongBowEvent` instance to destroy and NULLify. + */ +void longBowEvent_Destroy(LongBowEvent **eventPtr); + +/** + * Get the `LongBowLocation` associated with this `LongBowEvent` instance. + * + * @param [in] event A `LongBowEvent` instance. + * + * @return A pointer to the `LongBowLocation` instance for the given `LongBowEvent`. + */ +const LongBowLocation *longBowEvent_GetLocation(const LongBowEvent *event); + +/** + * Get the name. + * + * @param [in] event A `LongBowEvent` instance. + * + * @return The name of the given LongBowEvent. + */ +const char *longBowEvent_GetName(const LongBowEvent *event); + +/** + * Get a pointer to the string representing the kind of this event. + * + * Currently the kind is only a static string set when creating a `LongBowEvent`. + * + * @param [in] event A pointer to a `LongBowEvent` instance. + * + * @return non-NULL The pointer to the string representing the kind of this event. + * @return NULL The kind was not set. + * + * @see longBowEvent_Create + */ +const char *longBowEvent_GetKind(const LongBowEvent *event); + +/** + * Retrieve the message associated with this `LongBowEvent` instance. + * + * @param [in] event A `LongBowEvent` instance. + * + * @return The message associated with the given `LongBowEvent`. + */ +const char *longBowEvent_GetMessage(const LongBowEvent *event); + +/** + * Get the `LongBowBacktrace` instance for the given `LongBowEvent` instance. + * + * @param [in] event A pointer to a valid LongBowEvent instance. + * + * @return A pointer to a LongBowBacktrace instance. + */ +const LongBowBacktrace *longBowEvent_GetBacktrace(const LongBowEvent *event); + +/** + * Get an array of nul-terminated C strings containing the symbolic representation of the given `LongBowEvent` stack backtrace. + * The length of the array is provided by `longBowEvent_GetCallStackLength` + * + * @param [in] event A pointer to a valid `LongBowEvent` instance. + * + * @return non-NULL An array of nul-terminated C strings + * @see longBowEvent_GetCallStackLength + */ +char **longBowEvent_CreateSymbolicCallstack(const LongBowEvent *event); + +/** + * Retrieve the call stack length associated with this `LongBowEvent` instance. + * + * @param [in] event A `LongBowEvent` instance. + * + * @return The length of the call stack. + */ +size_t longBowEvent_GetCallStackLength(const LongBowEvent *event); +#endif // LongBow_longBow_Event_h |