1#!/usr/bin/perl -w 2 3use strict; 4use warnings; 5use bigint; 6use DBI; 7use Data::Dumper; 8 9my $db_file = shift; 10my $db = DBI->connect("dbi:SQLite:$db_file", "", "", {AutoCommit => 0}); 11 12$db->do("PRAGMA cache_size = 800000"); 13$db->do("PRAGMA journal_mode = OFF"); 14$db->do("PRAGMA count_changes = OFF"); 15$db->do("PRAGMA temp_store = MEMORY"); 16$db->do("PRAGMA locking = EXCLUSIVE"); 17 18my ($update, $sth, $fn_ptr, $ptr_to_ptr, $count); 19 20$update = $db->prepare_cached('UPDATE function_ptr set searchable = 1 where ptr = ?'); 21$sth = $db->prepare('select distinct(ptr) from function_ptr;'); 22$sth->execute(); 23 24while ($fn_ptr = $sth->fetchrow_array()) { 25 26 # following a pointer to pointer chain is too complicated for now 27 $ptr_to_ptr = $db->selectrow_array("select function from function_ptr where ptr = '$fn_ptr' and function like '% %';"); 28 if ($ptr_to_ptr) { 29 next; 30 } 31 $ptr_to_ptr = $db->selectrow_array("select function from function_ptr where ptr = '$fn_ptr' and function like '%[]';"); 32 if ($ptr_to_ptr) { 33 next; 34 } 35 36 $count = $db->selectrow_array("select count(*) from return_states join function_ptr where return_states.function == function_ptr.function and ptr = '$fn_ptr';"); 37 # if there are too many states then bail 38 if ($count > 1000) { 39 next; 40 } 41 # if there are no states at all then don't bother recording 42 if ($count == 0) { 43 next; 44 } 45 46 $update->execute($fn_ptr); 47} 48 49$db->commit(); 50$db->disconnect(); 51