env_manager Struct Reference

Collaboration diagram for env_manager:

Data Structures
struct	kv

Public Member Functions
void	init (bool can_restore, bool debug)
const char *	get (const char *name)
void	xput (const char *string)
void	restore ()

Private Attributes
bool	m_can_restore
bool	m_debug
vec< kv >	m_keys

Detailed Description

Manage the manipulation of env vars.

We poison "getenv" and "putenv", so that all enviroment-handling is
done through this class.  Note that poisoning happens in the
preprocessor at the identifier level, and doesn't distinguish between
  env.getenv ();
and
  getenv ();
Hence we need to use "get" for the accessor method, not "getenv".   

Member Function Documentation

get()

const char * env_manager::get

(

const char *

name

)

Get the value of NAME within the environment.  Essentially
a wrapper for ::getenv, but adding logging, and the possibility
of caching results.   

References ggc_alloc(), and m_debug.

Referenced by getenv_spec_function(), and process_command().

init()

void env_manager::init	(	bool	can_restore,
		bool	debug )

Initializer for class env_manager.

We can't do this as a constructor since we have a statically
allocated instance ("env" above).   

References debug, ggc_alloc(), m_can_restore, and m_debug.

Referenced by driver::driver().

restore()

void env_manager::restore

(

)

Undo any xputenv changes made since last restore.
Can only be called if the env_manager was initialized with
CAN_RESTORE enabled.   

References FOR_EACH_VEC_ELT_REVERSE, free(), gcc_assert, ggc_alloc(), i, m_can_restore, m_debug, env_manager::kv::m_key, m_keys, and env_manager::kv::m_value.

Referenced by driver::finalize().

xput()

void env_manager::xput

(

const char *

string

)

Put the given KEY=VALUE entry STRING into the environment.
If the env_manager was initialized with CAN_RESTORE set, then
also record the old value of KEY within the environment, so that it
can be later restored.   

References CONST_CAST, fnotice(), gcc_assert, ggc_alloc(), m_can_restore, m_debug, env_manager::kv::m_key, m_keys, env_manager::kv::m_value, and NULL.

Referenced by xputenv().

Field Documentation

m_can_restore

bool env_manager::m_can_restore

private

Referenced by init(), restore(), and xput().

m_debug

bool env_manager::m_debug

private

Referenced by get(), init(), restore(), and xput().

m_keys

vec<kv> env_manager::m_keys

private

Referenced by restore(), and xput().

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The documentation for this struct was generated from the following file:

• gcc.cc