/usr/include/litl_read.h is in liblitl-dev 0.1.1+dfsg-3ubuntu1.
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/*
* Copyright © Télécom SudParis.
* See COPYING in top-level directory.
*/
#ifndef LITL_READ_H_
#define LITL_READ_H_
/**
* \file litl_read.h
* \brief litl_read Provides a set of functions for reading events from a
* regular trace file or an archive of traces
*
* \authors
* Developers are: \n
* Roman Iakymchuk -- roman.iakymchuk@telecom-sudparis.eu \n
* Francois Trahay -- francois.trahay@telecom-sudparis.eu \n
*/
#include "litl_types.h"
/**
* \defgroup litl_read LiTL Reading Functions
*/
/**
* \defgroup litl_read_init Initialization Functions
* \ingroup litl_read
*/
/**
* \defgroup litl_read_main Functions for Reading Events
* \ingroup litl_read
*/
/**
* \defgroup litl_read_process Functions for Processing Events
* \ingroup litl_read
*/
/**
* \ingroup litl_read_init
* \brief Opens a trace and reads the first portion of data (trace header) to the buffer
* \param filename A filename
* \return A pointer to the trace object. NULL in case of failure
*/
litl_read_trace_t* litl_read_open_trace(const char* filename);
/**
* \ingroup litl_read_init
* \brief Initializes the event reading structure
* \param trace A pointer to the trace object
*/
void litl_read_init_processes(litl_read_trace_t* trace);
/**
* \ingroup litl_read_init
* \brief Returns a pointer to the trace header
* \param trace A pointer to the trace object
* \return A pointer to the trace header
*/
litl_general_header_t* litl_read_get_trace_header(litl_read_trace_t* trace);
/**
* \ingroup litl_read_init
* \brief Returns a pointer to the process header
* \param process A pointer to the process object
* \return A pointer to the trace header
*/
litl_process_header_t* litl_read_get_process_header(
litl_read_process_t* process);
/**
* \ingroup litl_read_init
* \brief Sets the buffer size
* \param trace A pointer to the trace object
* \param buf_size A buffer size (in Byte)
*/
void litl_read_set_buffer_size(litl_read_trace_t* trace,
const litl_size_t buf_size);
/**
* \ingroup litl_read_init
* \brief Returns the buffer size
* \param trace A pointer to the trace object
* \return A buffer size (in Byte)
*/
litl_size_t litl_read_get_buffer_size(litl_read_trace_t* trace);
/**
* \ingroup litl_read_main
* \brief Resets the trace pointer
* \param process A pointer to the process object
*/
void litl_read_reset_process(litl_read_process_t* process);
/**
* \ingroup litl_read_main
* \brief Reads the next event from a trace
* \param trace A pointer to the trace object
* \param process A pointer to the process object
*/
litl_read_event_t* litl_read_next_process_event(litl_read_trace_t* trace,
litl_read_process_t* process);
/**
* \ingroup litl_read_main
* \brief Reads the next event from a trace file
* \param trace A pointer to the trace object
*/
litl_read_event_t* litl_read_next_event(litl_read_trace_t* trace);
/**
* \ingroup litl_read_main
* \brief Closes the trace and frees the allocated memory
* \param trace A pointer to the trace object
*/
void litl_read_finalize_trace(litl_read_trace_t* trace);
/*** Internal-use macros ***/
/*
* For internal use only
* Initializes a pointer for browsing the parameters of an event
*/
#define __LITL_READ_INIT_PTR(evt, _ptr_) \
do { \
if(LITL_READ_GET_TYPE(evt) == LITL_TYPE_REGULAR) \
_ptr_ = &LITL_READ_REGULAR(evt)->param[0]; \
else \
_ptr_ = &LITL_READ_PACKED(evt)->param[0]; \
} while(0)
/*
* For internal use only
* Returns the next parameter in an event
*/
#define __LITL_READ_GET_ARG(evt, _ptr_, arg) \
do { \
if(LITL_READ_GET_TYPE(evt) == LITL_TYPE_REGULAR) \
__LITL_READ_GET_ARG_REGULAR(_ptr_, arg); \
else \
__LITL_READ_GET_ARG_PACKED(_ptr_, arg); \
} while(0)
/*
* For internal use only
* Returns the next parameter in a regular event
*/
#define __LITL_READ_GET_ARG_REGULAR(_ptr_, arg) do { \
arg = (typeof(arg)) *(litl_param_t*)_ptr_; \
(litl_param_t*)_ptr_++; \
} while(0)
/*
* For internal use only
* Returns the next parameter in a packed event
*/
#define __LITL_READ_GET_ARG_PACKED(_ptr_, arg) do { \
memcpy(&arg, _ptr_, sizeof(arg)); \
_ptr_ = ((char*)_ptr_)+sizeof(arg); \
} while(0)
/*** functions for reading events ***/
/**
* \ingroup litl_read_process
* \brief Returns a current event of a given thread
* \param process An event reading object
* \param thread_index An index of a given thread
*/
#define LITL_READ_GET_CUR_EVENT_PER_THREAD(process, thread_index) \
(&(process)->threads[(thread_index)]->cur_event)
/**
* \ingroup litl_read_process
* \brief Returns a current event of a given trace
* \param process An event reading object
*/
#define LITL_READ_GET_CUR_EVENT(process) \
LITL_READ_GET_CUR_EVENT_PER_THREAD(process, (process)->cur_index)
/**
* \ingroup litl_read_process
* \brief Returns a thread id of a given event
* \param read_event An event
*/
#define LITL_READ_GET_TID(read_event) (read_event)->tid
/**
* \ingroup litl_read_process
* \brief Returns a time stamp of a given event
* \param read_event An event
*/
#define LITL_READ_GET_TIME(read_event) (read_event)->event->time
/**
* \ingroup litl_read_process
* \brief Returns a type of a given event
* \param read_event An event
*/
#define LITL_READ_GET_TYPE(read_event) (read_event)->event->type
/**
* \ingroup litl_read_process
* \brief Returns a code of a given event
* \param read_event An event
*/
#define LITL_READ_GET_CODE(read_event) (read_event)->event->code
/**
* \ingroup litl_read_process
* \brief Returns a size and parameters in the string format of a raw event
* \param read_event An event
*/
#define LITL_READ_RAW(read_event) (&(read_event)->event->parameters.raw)
/**
* \ingroup litl_read_process
* \brief Returns a size and a list of parameters of a regular event
* \param read_event An event
*/
#define LITL_READ_REGULAR(read_event) (&(read_event)->event->parameters.regular)
/**
* \ingroup litl_read_process
* \brief Returns a size and a list of parameters of a packed event
* \param read_event An event
*/
#define LITL_READ_PACKED(read_event) (&(read_event)->event->parameters.packed)
/**
* \ingroup litl_read_process
* \brief Returns a size and an offset of an event of type offset
* \param read_event An event
*/
#define LITL_READ_OFFSET(read_event) (&(read_event)->event->parameters.offset)
/**
* \ingroup litl_read_process
* \brief Assigns the first parameter of p_evt to param1
* \param p_evt A pointer to an event
* \param param1 1st parameter for this event
*/
#define litl_read_get_param_1(p_evt, \
param1) \
do { \
void* _ptr_; \
__LITL_READ_INIT_PTR(p_evt, _ptr_); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param1); \
} while(0)
/**
* \ingroup litl_read_process
* \brief Assigns the first 2 parameters of p_evt to param1 and param2
* \param p_evt A pointer to an event
* \param param1 1st parameter for this event
* \param param2 2nd parameter for this event
*/
#define litl_read_get_param_2(p_evt, \
param1, \
param2) \
do { \
void* _ptr_; \
__LITL_READ_INIT_PTR(p_evt, _ptr_); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param1); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param2); \
} while(0)
/**
* \ingroup litl_read_process
* \brief Assigns the first 3 parameters of p_evt to param1, ..., param3
* \param p_evt A pointer to an event
* \param param1 1st parameter for this event
* \param param2 2nd parameter for this event
* \param param3 3rd parameter for this event
*/
#define litl_read_get_param_3(p_evt, \
param1, \
param2, \
param3) \
do { \
void* _ptr_; \
__LITL_READ_INIT_PTR(p_evt, _ptr_); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param1); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param2); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param3); \
} while(0)
/**
* \ingroup litl_read_process
* \brief Assigns the first 4 parameters of p_evt to param1, ..., param4
* \param p_evt A pointer to an event
* \param param1 1st parameter for this event
* \param param2 2nd parameter for this event
* \param param3 3rd parameter for this event
* \param param4 4th parameter for this event
*/
#define litl_read_get_param_4(p_evt, \
param1, \
param2, \
param3, \
param4) \
do { \
void* _ptr_; \
__LITL_READ_INIT_PTR(p_evt, _ptr_); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param1); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param2); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param3); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param4); \
} while(0)
/**
* \ingroup litl_read_process
* \brief Assigns the first 5 parameters of p_evt to param1, ..., param5
* \param p_evt A pointer to an event
* \param param1 1st parameter for this event
* \param param2 2nd parameter for this event
* \param param3 3rd parameter for this event
* \param param4 4th parameter for this event
* \param param5 5th parameter for this event
*/
#define litl_read_get_param_5(p_evt, \
param1, \
param2, \
param3, \
param4, \
param5) \
do { \
void* _ptr_; \
__LITL_READ_INIT_PTR(p_evt, _ptr_); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param1); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param2); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param3); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param4); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param5); \
} while(0)
/**
* \ingroup litl_read_process
* \brief Assigns the first 6 parameters of p_evt to param1, ..., param6
* \param p_evt A pointer to an event
* \param param1 1st parameter for this event
* \param param2 2nd parameter for this event
* \param param3 3rd parameter for this event
* \param param4 4th parameter for this event
* \param param5 5th parameter for this event
* \param param6 6th parameter for this event
*/
#define litl_read_get_param_6(p_evt, \
param1, \
param2, \
param3, \
param4, \
param5, \
param6) \
do { \
void* _ptr_; \
__LITL_READ_INIT_PTR(p_evt, _ptr_); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param1); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param2); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param3); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param4); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param5); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param6); \
} while(0)
/**
* \ingroup litl_read_process
* \brief Assigns the first 7 parameters of p_evt to param1, ..., param7
* \param p_evt A pointer to an event
* \param param1 1st parameter for this event
* \param param2 2nd parameter for this event
* \param param3 3rd parameter for this event
* \param param4 4th parameter for this event
* \param param5 5th parameter for this event
* \param param6 6th parameter for this event
* \param param7 7th parameter for this event
*/
#define litl_read_get_param_7(p_evt, \
param1, \
param2, \
param3, \
param4, \
param5, \
param6, \
param7) \
do { \
void* _ptr_; \
__LITL_READ_INIT_PTR(p_evt, _ptr_); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param1); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param2); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param3); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param4); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param5); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param6); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param7); \
} while(0)
/**
* \ingroup litl_read_process
* \brief Assigns the first 8 parameters of p_evt to param1, ..., param8
* \param p_evt A pointer to an event
* \param param1 1st parameter for this event
* \param param2 2nd parameter for this event
* \param param3 3rd parameter for this event
* \param param4 4th parameter for this event
* \param param5 5th parameter for this event
* \param param6 6th parameter for this event
* \param param7 7th parameter for this event
* \param param8 8th parameter for this event
*/
#define litl_read_get_param_8(p_evt, \
param1, \
param2, \
param3, \
param4, \
param5, \
param6, \
param7, \
param8) \
do { \
void* _ptr_; \
__LITL_READ_INIT_PTR(p_evt, _ptr_); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param1); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param2); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param3); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param4); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param5); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param6); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param7); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param8); \
} while(0)
/**
* \ingroup litl_read_process
* \brief Assigns the first 9 parameters of p_evt to param1, ..., param9
* \param p_evt A pointer to an event
* \param param1 1st parameter for this event
* \param param2 2nd parameter for this event
* \param param3 3rd parameter for this event
* \param param4 4th parameter for this event
* \param param5 5th parameter for this event
* \param param6 6th parameter for this event
* \param param7 7th parameter for this event
* \param param8 8th parameter for this event
* \param param9 9th parameter for this event
*/
#define litl_read_get_param_9(p_evt, \
param1, \
param2, \
param3, \
param4, \
param5, \
param6, \
param7, \
param8, \
param9) \
do { \
void* _ptr_; \
__LITL_READ_INIT_PTR(p_evt, _ptr_); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param1); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param2); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param3); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param4); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param5); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param6); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param7); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param8); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param9); \
} while(0)
/**
* \ingroup litl_read_process
* \brief Assigns the first 10 parameters of p_evt to param1, ..., param10
* \param p_evt A pointer to an event
* \param param1 1st parameter for this event
* \param param2 2nd parameter for this event
* \param param3 3rd parameter for this event
* \param param4 4th parameter for this event
* \param param5 5th parameter for this event
* \param param6 6th parameter for this event
* \param param7 7th parameter for this event
* \param param8 8th parameter for this event
* \param param9 9th parameter for this event
* \param param10 10th parameter for this event
*/
#define litl_read_get_param_10(p_evt, \
param1, \
param2, \
param3, \
param4, \
param5, \
param6, \
param7, \
param8, \
param9, \
param10) \
do { \
void* _ptr_; \
__LITL_READ_INIT_PTR(p_evt, _ptr_); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param1); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param2); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param3); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param4); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param5); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param6); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param7); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param8); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param9); \
__LITL_READ_GET_ARG(p_evt, _ptr_, param10); \
} while(0)
#endif /* LITL_READ_H_ */
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