opd_mapping.c File Reference

#include "opd_mapping.h"
#include "opd_proc.h"
#include "opd_image.h"
#include "opd_printf.h"
#include "op_interface.h"
#include "op_config_24.h"
#include "op_libiberty.h"
#include <sys/mman.h>
#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

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Functions
void	opd_cleanup_hash_name (void)
void	opd_init_hash_map (void)
void	opd_kill_maps (struct opd_proc *proc)
void	opd_add_mapping (struct opd_proc *proc, struct opd_image *image, unsigned long start, unsigned long offset, unsigned long end)
static char *	get_from_pool (uint ind)
static char const *	opd_get_hash_name (int hash)
void	opd_handle_mapping (struct op_note const *note)
Variables
static struct op_hash_index *	hashmap
static char const *	hash_name [OP_HASH_MAP_NR]

---

Detailed Description

Management of process mappings

Remarks:

Copyright 2002 OProfile authors

Read the file COPYING

Author:

John Levon

Philippe Elie

Definition in file opd_mapping.c.

---

Function Documentation

static char* get_from_pool

(

uint

ind

)

[inline, static]

get_from_pool - retrieve string from hash map pool

Parameters:

ind

index into pool

Definition at line 99 of file opd_mapping.c.

References OP_HASH_MAP_NR.

Referenced by opd_get_hash_name().

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void opd_add_mapping	(	struct opd_proc *	proc,
		struct opd_image *	image,
		unsigned long	start,
		unsigned long	offset,
		unsigned long	end
	)

opd_put_mapping - add a mapping to a process

Parameters:

	proc	process to add map to
	image	mapped image pointer
	start	start of mapping
	offset	file offset of mapping
	end	end of mapping

Add the mapping specified to the process proc growing the maps array if necessary.

Definition at line 68 of file opd_mapping.c.

References opd_map::end, opd_map::image, list_add_tail(), list_empty(), opd_proc::maps, opd_proc::name, opd_image::name, opd_map::next, opd_map::offset, opd_image::ref_count, opd_map::start, opd_proc::tid, verbprintf, and vmisc.

Referenced by opd_add_ascii_map(), opd_add_kernel_map(), opd_get_ascii_maps(), opd_handle_fork(), and opd_handle_mapping().

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void opd_cleanup_hash_name

(

void

)

op_cleanup_hash_name

release resource owned by hash_name array

Definition at line 33 of file opd_mapping.c.

References hash_name, and OP_HASH_MAP_NR.

Referenced by clean_exit().

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static char const* opd_get_hash_name

(

int

hash

)

[static]

opg_get_hash_name - find a mapping name from a hash

Parameters:

hash

hash value for this name

Definition at line 109 of file opd_mapping.c.

References get_from_pool(), hash_name, and op_hash_index::parent.

Referenced by opd_handle_mapping().

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void opd_handle_mapping

(

struct op_note const *

note

)

opd_handle_mapping - deal with mapping notification

Parameters:

note

mapping notification

Deal with one notification that a process has mapped in a new executable file. The mapping information is added to the process structure.

Definition at line 139 of file opd_mapping.c.

References op_note::addr, op_note::hash, op_note::len, opd_proc::name, opd_image::name, op_note::offset, OP_HASH_MAP_NR, opd_add_mapping(), opd_get_hash_name(), opd_get_image(), opd_get_proc(), opd_new_proc(), op_note::pid, op_note::tgid, verbprintf, and vmisc.

Referenced by opd_do_notes().

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void opd_init_hash_map

(

void

)

opd_init_hash_map - initialise the hashmap

Definition at line 42 of file opd_mapping.c.

References hashmapdevfd, and OP_HASH_MAP_SIZE.

Referenced by op_open_files().

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void opd_kill_maps

(

struct opd_proc *

proc

)

opd_kill_maps - delete mapping information for a process

Parameters:

proc

process to work on

Frees structures holding mapping information

Definition at line 55 of file opd_mapping.c.

References opd_map::image, list_del(), list_entry, list_for_each_safe, opd_proc::maps, opd_map::next, and opd_delete_image().

Referenced by opd_delete_proc(), and opd_handle_exec().

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Variable Documentation

char const* hash_name[OP_HASH_MAP_NR] [static]

Definition at line 30 of file opd_mapping.c.

Referenced by opd_cleanup_hash_name(), and opd_get_hash_name().

struct op_hash_index* hashmap [static]

Definition at line 28 of file opd_mapping.c.