opd_mapping.h File Reference

Management of process mappings. More...

#include "op_list.h"

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Classes
struct	opd_map
	represent a mmap'ed area, we create such area only for vma area with exec access right More...
Functions
void	opd_init_hash_map (void)
	opd_init_hash_map - initialise the hashmap
void	opd_cleanup_hash_name (void)
	op_cleanup_hash_name
void	opd_handle_mapping (struct op_note const *note)
	opd_handle_mapping - deal with mapping notification
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
void	opd_kill_maps (struct opd_proc *proc)
	opd_kill_maps - delete mapping information for a process

---

Detailed Description

Management of process mappings.

Remarks:

Copyright 2002 OProfile authors

Read the file COPYING

Author:

John Levon

Philippe Elie

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Function Documentation

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.

References opd_map::end, opd_map::image, 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_kernel_map(), opd_handle_fork(), and opd_handle_mapping().

void opd_cleanup_hash_name

(

void

)

op_cleanup_hash_name

release resource owned by hash_name array

References OP_HASH_MAP_NR.

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.

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

void opd_init_hash_map

(

void

)

opd_init_hash_map - initialise the hashmap

References hashmapdevfd, and OP_HASH_MAP_SIZE.

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

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

Referenced by opd_handle_exec().