init.c File Reference

#include "config.h"
#include "opd_proc.h"
#include "opd_mapping.h"
#include "opd_24_stats.h"
#include "opd_sample_files.h"
#include "opd_image.h"
#include "opd_parse_proc.h"
#include "opd_kernel.h"
#include "opd_printf.h"
#include "oprofiled.h"
#include "op_sample_file.h"
#include "op_config_24.h"
#include "op_interface.h"
#include "op_libiberty.h"
#include "op_deviceio.h"
#include "op_events.h"
#include "op_get_time.h"
#include "op_fileio.h"
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>

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Functions
static void	opd_sighup (void)
static void	opd_alarm (void)
static void	opd_sigterm (void)
static void	op_open_files (void)
static void	opd_do_samples (struct op_buffer_head const *buf)
static void	opd_do_notes (struct op_note const *opd_buf, size_t count)
static void	opd_shutdown (struct op_buffer_head buf, size_t size, struct op_note nbuf, size_t nsize)
static void	opd_do_read (struct op_buffer_head buf, size_t size, struct op_note nbuf, size_t nsize)
static void	clean_exit (void)
static void	opd_24_init (void)
static void	opd_24_start (void)
static void	opd_24_exit (void)
Variables
fd_t	hashmapdevfd
int	cpu_number
static fd_t	devfd
static fd_t	notedevfd
static struct op_buffer_head *	sbuf
static size_t	s_buf_bytesize
static struct op_note *	nbuf
static size_t	n_buf_bytesize
struct oprofiled_ops	opd_24_ops

Detailed Description

Daemon set up and main loop for 2.4

Remarks:: Copyright 2002 OProfile authors; Read the file COPYING

Author:: John Levon; Philippe Elie

Definition in file init.c.

Function Documentation

static void clean_exit ( void ) [static]

Definition at line 309 of file init.c.

References op_free_events(), op_lock_file, and opd_cleanup_hash_name().

Referenced by opd_24_init().

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static void op_open_files ( void ) [static]

op_open_files - open necessary files

Open the device files and the log file, and mmap() the hash map.

Definition at line 61 of file init.c.

References devfd, hashmapdevfd, notedevfd, op_device, op_get_time(), op_hash_device, op_log_file, op_note_device, op_open_device(), opd_init_hash_map(), and opd_open_logfile().

Referenced by opd_24_start().

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static void opd_24_exit ( void ) [static]

Definition at line 369 of file init.c.

References op_get_time(), opd_clear_module_info(), opd_delete_image(), opd_for_each_image(), opd_print_24_stats(), and opd_proc_cleanup().

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static void opd_24_init ( void ) [static]

Definition at line 325 of file init.c.

References clean_exit(), kernel_range, n_buf_bytesize, no_vmlinux, OP_DEFAULT_BUF_SIZE, OP_DEFAULT_NOTE_SIZE, OP_MOUNT, opd_24_stats, opd_init_images(), opd_init_kernel_image(), opd_init_procs(), OPD_MAX_STATS, opd_parse_kernel_range(), opd_read_fs_int(), and s_buf_bytesize.

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static void opd_24_start ( void ) [static]

Definition at line 357 of file init.c.

References n_buf_bytesize, op_open_files(), opd_do_read(), opd_get_ascii_procs(), and s_buf_bytesize.

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static void opd_alarm ( void ) [static]

opd_alarm - clean up old procs, msync, and report stats

Definition at line 285 of file init.c.

References opd_age_procs(), opd_print_24_stats(), and opd_sync_samples_files().

Referenced by opd_do_read().

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static void opd_do_notes	(	struct op_note const *	opd_buf,
		size_t	count
	)			`[static]`

opd_do_notes - process a notes buffer

Parameters:

	opd_buf	buffer to process
	count	number of bytes in buffer

Process a buffer of notes.

Definition at line 212 of file init.c.

References OP_DROP_MODULES, OP_EXEC, OP_EXIT, OP_FORK, OP_MAP, opd_24_stats, opd_clear_module_info(), opd_handle_exec(), opd_handle_exit(), opd_handle_fork(), opd_handle_mapping(), OPD_NOTIFICATIONS, op_note::pid, op_note::tgid, and op_note::type.

Referenced by opd_do_read(), and opd_shutdown().

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static void opd_do_read	(	struct op_buffer_head *	buf,
		size_t	size,
		struct op_note *	nbuf,
		size_t	nsize
	)			`[static]`

opd_do_read - enter processing loop

Parameters:

	buf	buffer to read into
	size	size of buffer
	nbuf	note buffer
	nsize	size of note buffer

Read some of a buffer from the device and process the contents.

Definition at line 165 of file init.c.

References devfd, notedevfd, op_read_device(), opd_alarm(), opd_do_notes(), opd_do_samples(), opd_shutdown(), opd_sighup(), opd_sigterm(), signal_alarm, signal_hup, signal_term, op_buffer_head::state, STOPPING, verbprintf, and vmisc.

Referenced by opd_24_start().

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static void opd_do_samples ( struct op_buffer_head const * opd_buf ) [static]

opd_do_samples - process a sample buffer

Parameters:

opd_buf

buffer to process

Process a buffer of samples. The signals specified by the global variable maskset are masked.

If the sample could be processed correctly, it is written to the relevant sample file. Additionally mapping and process notifications are handled here.

Definition at line 262 of file init.c.

References op_buffer_head::buffer, buffer, op_buffer_head::count, op_buffer_head::cpu_nr, cpu_number, op_sample::eip, opd_24_stats, OPD_DUMP_COUNT, opd_put_sample(), pid, separate_cpu, verbprintf, vmisc, and vsamples.

Referenced by opd_do_read(), and opd_shutdown().

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static void opd_shutdown	(	struct op_buffer_head *	buf,
		size_t	size,
		struct op_note *	nbuf,
		size_t	nsize
	)			`[static]`

do_shutdown - shutdown cleanly, reading as much remaining data as possible.

Parameters:

	buf	sample buffer area
	size	size of sample buffer
	nbuf	note buffer area
	nsize	size of note buffer

Definition at line 120 of file init.c.

References devfd, notedevfd, op_read_device(), opd_do_notes(), opd_do_samples(), op_buffer_head::state, verbprintf, and vmisc.

Referenced by opd_do_read().

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static void opd_sighup ( void ) [static]

Definition at line 298 of file init.c.

References opd_close_image_samples_files(), opd_for_each_image(), and opd_open_logfile().

Referenced by opd_do_read().

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static void opd_sigterm ( void ) [static]

Definition at line 317 of file init.c.

References op_get_time(), and opd_print_24_stats().

Referenced by opd_do_read().

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Variable Documentation

int cpu_number

Definition at line 41 of file init.c.

Referenced by opd_do_samples(), and opd_put_image_sample().

fd_t devfd [static]

Definition at line 43 of file init.c.

Referenced by op_open_files(), opd_do_read(), and opd_shutdown().

fd_t hashmapdevfd

Definition at line 39 of file init.c.

Referenced by op_open_files(), and opd_init_hash_map().

size_t n_buf_bytesize [static]

Definition at line 48 of file init.c.

Referenced by opd_24_init(), and opd_24_start().

struct op_note* nbuf [static]

Definition at line 47 of file init.c.

fd_t notedevfd [static]

Definition at line 44 of file init.c.

Referenced by op_open_files(), opd_do_read(), and opd_shutdown().

struct oprofiled_ops opd_24_ops

Initial value:

 {
    .init = opd_24_init,
    .start = opd_24_start,
    .exit = opd_24_exit
}

Definition at line 383 of file init.c.

Referenced by get_ops().

size_t s_buf_bytesize [static]

Definition at line 46 of file init.c.

Referenced by opd_24_init(), and opd_24_start().

struct op_buffer_head* sbuf [static]

Definition at line 45 of file init.c.

init.c File Reference

Functions

Variables

Detailed Description

Function Documentation

Variable Documentation