tr-driver.c File Reference

Implementation of run the trace-replay benchmark. More...

#include <stdlib.h>
#include <errno.h>
#include <search.h>
#include <assert.h>
#include <unistd.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/syscall.h>
#include <json.h>
#include <jemalloc/jemalloc.h>
#include <generic.h>
#include <runner.h>
#include <driver/tr-driver.h>
#include <log.h>
#include <sync.h>
#include <trace_replay.h>

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Enumerations
enum	{ TR_NONE_SCHEDULER = 0, TR_KYBER_SCHEDULER, TR_BFQ_SCHEDULER }

Functions
static void	tr_kill_handle (int signum)
	Capture the SIGTERM and deallocate all resources which this process has. More...
static void	__tr_free (void)
	Deallocate this driver's resources. More...
int	tr_valid_scheduler_test (const char *scheduler)
	Check the current inputted scheduler text can be supported by the driver. More...
int	tr_has_weight_scheduler (const int scheduler_index)
	Check the parameter's scheduler_index supports weight. More...
int	tr_init (void *object)
	Initialize the global configuration and per processes configuration. More...
static int	tr_set_cgroup_state (struct tr_info *current)
	Set the child process to specific control group(cgroup) More...
static int	tr_do_exec (struct tr_info *current)
	Each process trace-replay execute part. More...
int	tr_runner (void)
	Run all processes' trace-replay part. More...
int	tr_get_interval (const char *key, char *buffer)
	Get execution-time results from trace-replay. More...
int	tr_get_total (const char *key, char *buffer)
	Get end-time results from trace-replay. More...
void	tr_free (void)
	Deallocate resources of this driver. More...

Variables
static const char *	tr_valid_scheduler []
	Associated table of I/O scheduler. More...
static const int	tr_weight_support_scheduler [] = { TR_BFQ_SCHEDULER }
static struct tr_info *	global_info_head = NULL

Detailed Description

Implementation of run the trace-replay benchmark.

Copyright

"Container Tracer" which executes the container performance mesurements Copyright (C) 2020 BlaCkinkGJ

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Author

BlaCkinkGJ (ss5ki.nosp@m.jun@.nosp@m.gmail.nosp@m..com)

Version

0.1.2

Date

2020-08-05

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
TR_NONE_SCHEDULER
TR_KYBER_SCHEDULER
TR_BFQ_SCHEDULER

Function Documentation

__tr_free()

static void __tr_free ( void  )

static

Deallocate this driver's resources.

Note

http://www.ascii-art.de/ascii/def/dr_who.txt

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tr_do_exec()

static int tr_do_exec ( struct tr_info *  current )

static

Each process trace-replay execute part.

Parameters

[in]

current

The structure which has the current process information.

Returns

0 for success to execute, negative value for fail to create.

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tr_free()

void tr_free

(

void

)

Deallocate resources of this driver.

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tr_get_interval()

int tr_get_interval	(	const char *	key,
		char *	buffer
	)

Get execution-time results from trace-replay.

Parameters

[in]	key	cgroup_id value which specifies the location of data I want to get.
[out]	buffer	Data contains the execution-time results based on key.

Returns

log.type for success to get information, negative value for fail to get information.

Warning

buffer must be allocated memory over and equal INTERVAL_RESULT_STRING_SIZE

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tr_get_total()

int tr_get_total	(	const char *	key,
		char *	buffer
	)

Get end-time results from trace-replay.

Parameters

[in]	key	cgroup_id value which specifies the location of data I want to get.
[out]	buffer	Data contains the end-time results based on key.

Returns

0 for success to get information, negative value for fail to get information.

Warning

buffer must be allocated memory over and equal TOTAL_RESULT_STRING_SIZE

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tr_has_weight_scheduler()

int tr_has_weight_scheduler

(

const int

scheduler_index

)

Check the parameter's scheduler_index supports weight.

Parameters

[in]

scheduler_index

The scheduler's index which is based on tr_valid_scheduler and wants to check.

Returns

0 for doesn't support the weight, 1 for supporting the weight

tr_init()

int tr_init

(

void *

object

)

Initialize the global configuration and per processes configuration.

Parameters

[in]

object

global runner_config pointer.

Returns

0 for success to init, error number for fail to init.

Warning

Do not run this function in child process.

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tr_kill_handle()

static void tr_kill_handle ( int  signum )

static

Capture the SIGTERM and deallocate all resources which this process has.

Parameters

[in]

signum

Current captured signal.

Note

SIGKILL isn't captured.

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tr_runner()

int tr_runner

(

void

)

Run all processes' trace-replay part.

Returns

0 for success to run, error number for fail to run.

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tr_set_cgroup_state()

static int tr_set_cgroup_state ( struct tr_info *  current )

static

Set the child process to specific control group(cgroup)

Parameters

[in]

current

The structure which has the current process information.

Returns

0 for success to set, errno for fail to set.

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tr_valid_scheduler_test()

int tr_valid_scheduler_test

(

const char *

scheduler

)

Check the current inputted scheduler text can be supported by the driver.

Parameters

[in]

scheduler

Inputted scheduler string.

Returns

0 and positive integer for mean support the scheduler, -EINVAL for mean don't support the scheduler.

Variable Documentation

global_info_head

struct tr_info* global_info_head = NULL

static

global tr_info list

tr_valid_scheduler

const char* tr_valid_scheduler[]

static

Initial value:

= {
        [TR_NONE_SCHEDULER] = "none",
        [TR_KYBER_SCHEDULER] = "kyber",
        [TR_BFQ_SCHEDULER] = "bfq",
        NULL,
}

Associated table of I/O scheduler.

Warning

Kyber sceduler doesn't support in SCSI devices.

tr_weight_support_scheduler

const int tr_weight_support_scheduler[] = { TR_BFQ_SCHEDULER }

static