switch.c File Reference

SIP-router core ::Module: SIP-router core. More...

#include "switch.h"
#include "rvalue.h"
#include "route.h"
#include "mem/mem.h"
#include "error.h"

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Functions

• static int fix_match (struct action *t)

  fixup function for MATCH_T actions.
  

• int fix_switch (struct action *t)

  fixup function for SWITCH_T actions.
  

• static struct match_cond_table * mk_match_cond_table (int n)

  create a match cond table structure (pkg_malloc'ed).
  

• static struct switch_cond_table * mk_switch_cond_table (int n)

  create a cond table structure (pkg_malloc'ed).
  

• static struct switch_jmp_table * mk_switch_jmp_table (int jmp_size, int rest)

  create a jump table structure (pkg_malloc'ed).
  

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Detailed Description

Definition in file switch.c.

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Function Documentation

static int fix_match

(

struct action *

t

)

[static]

can produce 3 different action types:

• BLOCK_T (actions) - actions grouped in a block, break ends the block execution.
• EVAL_T (cond) - null switch block, but the condition has to be evaluated due to possible side-effects.
• MATCH_COND_T(cond, jumps) - condition table

Definition at line 422 of file switch.c.

References _str::len, mk_match_cond_table(), rval_destroy(), rval_expr_eval(), rval_get_str(), rve_destroy(), rve_has_side_effects(), rve_is_constant(), _str::s, and scr_opt_lev.

Referenced by fix_switch().

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int fix_switch

(

struct action *

t

)

can produce 4 different action types:

• BLOCK_T (actions) - actions grouped in a block, break ends the block execution.
• EVAL_T (cond) - null switch block, but the condition has to be evaluated due to possible side-effects.
• SWITCH_COND_T(cond, jumps) - condition table
• SWITCH_JT_T(cond, jumptable) - jumptable + condition table TODO: external optimizers that would "flatten" BLOCK_T w/no breaks or breaks at the end.

Definition at line 150 of file switch.c.

References fix_match(), mk_switch_cond_table(), mk_switch_jmp_table(), rval_expr_eval_int(), rve_destroy(), rve_has_side_effects(), rve_is_constant(), and scr_opt_lev.

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static struct match_cond_table* mk_match_cond_table

(

int

n

)

[static, read]

Returns:

0 on error, pointer on success

Definition at line 98 of file switch.c.

Referenced by fix_match().

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static struct switch_cond_table* mk_switch_cond_table

(

int

n

)

[static, read]

Returns:

0 on error, pointer on success

Definition at line 47 of file switch.c.

Referenced by fix_switch().

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static struct switch_jmp_table* mk_switch_jmp_table	(	int	jmp_size,
		int	rest
	)			[static, read]

Parameters:

	jmp_size	- size of the jump table
	rest	- size of the fallback condition table

Returns:

0 on error, pointer on success

Definition at line 71 of file switch.c.

Referenced by fix_switch().

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