dlt-test-multi-process.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <unistd.h>
#include <limits.h>
#include <signal.h>
#include <errno.h>
#include <pthread.h>
#include <sys/wait.h>
#include <syslog.h>
#include "dlt.h"
#include "dlt_common.h"
#include "dlt-test-multi-process.h"

Include dependency graph for dlt-test-multi-process.c:

Go to the source code of this file.

Data Structures
struct	s_parameters
struct	s_thread_data

Macros
#define	MAX_PROCS   100
#define	MAX_THREADS   100

Functions
void	init_params (s_parameters *params)
void	quit_handler (int signum)
void	cleanup ()
void	do_forks (s_parameters params)
void	run_threads (s_parameters params)
void	do_logging (s_thread_data *data)
int	wait_for_death ()
void	usage (char *prog_name)
int	read_cli (s_parameters *params, int argc, char **argv)
int	main (int argc, char **argv)
time_t	mksleep_time (int delay, int fudge)

Variables
volatile sig_atomic_t	in_handler = 0
pid_t	pids [MAX_PROCS]
unsigned int	pidcount = 0

Detailed Description

Author

Lassi Marttala lassi.nosp@m..lm..nosp@m.martt.nosp@m.ala@.nosp@m.partn.nosp@m.er.b.nosp@m.mw.de

Copyright

Copyright © 2011-2015 BMW AG.
License MPL-2.0: Mozilla Public License version 2.0 http://mozilla.org/MPL/2.0/.

Definition in file dlt-test-multi-process.c.

Macro Definition Documentation

#define MAX_PROCS   100

Definition at line 62 of file dlt-test-multi-process.c.

Referenced by read_cli(), and usage().

#define MAX_THREADS   100

Definition at line 63 of file dlt-test-multi-process.c.

Referenced by usage().

Function Documentation

void cleanup

(

)

Ask the child processes to die

Definition at line 275 of file dlt-test-multi-process.c.

References pidcount, and pids.

Referenced by do_forks(), main(), and quit_handler().

void do_forks

(

s_parameters

params

)

Start the child processes

Definition at line 222 of file dlt-test-multi-process.c.

References cleanup(), s_parameters::nprocs, pidcount, pids, and run_threads().

Referenced by main().

void do_logging

(

s_thread_data *

data

)

Open logging channel and proceed to spam messages

Definition at line 298 of file dlt-test-multi-process.c.

References s_parameters::delay, s_parameters::delay_fudge, DLT_LOG, DLT_LOG_INFO, DLT_REGISTER_CONTEXT, DLT_STRING, DLT_UNREGISTER_CONTEXT, mksleep_time(), mycontext, s_parameters::nmsgs, s_thread_data::params, and PAYLOAD_DATA.

Referenced by run_threads().

void init_params

(

s_parameters *

params

)

Set nice default values for parameters

Definition at line 119 of file dlt-test-multi-process.c.

References s_parameters::delay, s_parameters::delay_fudge, s_parameters::nmsgs, s_parameters::nprocs, and s_parameters::nthreads.

Referenced by main(), and usage().

int main	(	int	argc,
		char **	argv
	)

Entry point

Definition at line 189 of file dlt-test-multi-process.c.

References cleanup(), do_forks(), init_params(), quit_handler(), read_cli(), usage(), and wait_for_death().

time_t mksleep_time	(	int	delay,
		int	fudge
	)

Generate the next sleep time

Definition at line 287 of file dlt-test-multi-process.c.

Referenced by do_logging().

void quit_handler

(

int

signum

)

Clean up the child processes. Reraise signal to default handler.

Definition at line 260 of file dlt-test-multi-process.c.

References cleanup(), and in_handler.

Referenced by main().

int read_cli	(	s_parameters *	params,
		int	argc,
		char **	argv
	)

Read the command line and modify parameters

Definition at line 130 of file dlt-test-multi-process.c.

References s_parameters::delay, s_parameters::delay_fudge, MAX_PROCS, s_parameters::nmsgs, s_parameters::nprocs, and s_parameters::nthreads.

Referenced by main().

void run_threads

(

s_parameters

params

)

Start the threads and wait for them to return.

Definition at line 321 of file dlt-test-multi-process.c.

References DLT_REGISTER_APP, DLT_UNREGISTER_APP, do_logging(), s_parameters::nthreads, NULL, s_thread_data::params, and pidcount.

Referenced by do_forks().

void usage

(

char *

prog_name

)

Print instructions.

Definition at line 98 of file dlt-test-multi-process.c.

References s_parameters::delay, s_parameters::delay_fudge, dlt_get_version(), init_params(), MAX_PROCS, MAX_THREADS, s_parameters::nmsgs, s_parameters::nprocs, and s_parameters::nthreads.

Referenced by main().

int wait_for_death

(

)

Wait for child processes to complete their work.

Definition at line 361 of file dlt-test-multi-process.c.

References pidcount, and pids.

Referenced by main().

Variable Documentation

volatile sig_atomic_t in_handler = 0

Definition at line 89 of file dlt-test-multi-process.c.

Referenced by quit_handler().

unsigned int pidcount = 0

Definition at line 93 of file dlt-test-multi-process.c.

Referenced by cleanup(), do_forks(), run_threads(), and wait_for_death().

pid_t pids[MAX_PROCS]

Definition at line 92 of file dlt-test-multi-process.c.

Referenced by cleanup(), do_forks(), and wait_for_death().