version 1.10, 2006/06/27 15:21:28
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version 1.13.2.1, 2006/10/13 19:11:05
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Line 40 my $loncapa_max_wait_time = 13;
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Line 40 my $loncapa_max_wait_time = 13;
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require Exporter; |
require Exporter; |
our @ISA = qw (Exporter); |
our @ISA = qw (Exporter); |
our @EXPORT = qw(&escape_LaTeX &add_get_param &escape &unescape &tie_domain_hash &untie_domain_hash &tie_user_hash &untie_user_hash &propath); |
our @EXPORT = qw(&add_get_param &escape &unescape &tie_domain_hash &untie_domain_hash &tie_user_hash &untie_user_hash &propath); |
my %perlvar; |
my %perlvar; |
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# Escape a LaTeX string of special characters that according to LaTeX line by line |
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# pg 9 are: # $ % & \ ^ _ { } ~ These are escaped by prepending a \ |
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# |
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sub escape_LaTeX { |
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my ($string) = @_; |
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$string =~ s/[\#\$\%\&\\^_{}]/\\$&/g; |
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return $string; |
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} |
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# Inputs are a url, and a hash ref of |
# Inputs are a url, and a hash ref of |
Line 229 sub _do_hash_untie {
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Line 221 sub _do_hash_untie {
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{ |
{ |
my $sym; |
my $sym; |
my @pushed_syms; |
my @pushed_syms; |
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sub clean_sym { |
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undef($sym); |
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} |
sub push_locking_hash_tie { |
sub push_locking_hash_tie { |
if (!defined($sym)) { |
if (!defined($sym)) { |
die("Invalid used of push_locking_hash_tie, should only be called after a lock has occurred and before and unlock."); |
die("Invalid used of push_locking_hash_tie, should only be called after a lock has occurred and before and unlock."); |
Line 247 sub _do_hash_untie {
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Line 243 sub _do_hash_untie {
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sub _locking_hash_tie { |
sub _locking_hash_tie { |
my ($file_prefix,$namespace,$how,$loghead,$what) = @_; |
my ($file_prefix,$namespace,$how,$loghead,$what) = @_; |
if (defined($sym)) { |
if (defined($sym)) { |
die('Nested locking attempted withut proper use of push_locking_hahs_tie, this is unsupportted'); |
die('Nested locking attempted without proper use of push_locking_hash_tie, this is unsupported'); |
} |
} |
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my $lock_type=LOCK_SH; |
my $lock_type=LOCK_SH; |
Line 261 sub _do_hash_untie {
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Line 257 sub _do_hash_untie {
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if ((! -e "$file_prefix.db") && (! -e "$file_prefix.db.gz")) { |
if ((! -e "$file_prefix.db") && (! -e "$file_prefix.db.gz")) { |
# No such file. Forget it. |
# No such file. Forget it. |
$! = 2; |
$! = 2; |
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&clean_sym(); |
return undef; |
return undef; |
} |
} |
# Apparently just no lock file yet. Make one |
# Apparently just no lock file yet. Make one |
Line 268 sub _do_hash_untie {
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Line 265 sub _do_hash_untie {
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} |
} |
# Do a shared lock |
# Do a shared lock |
if (!&flock_sym(LOCK_SH)) { |
if (!&flock_sym(LOCK_SH)) { |
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&clean_sym(); |
return undef; |
return undef; |
} |
} |
# If this is compressed, we will actually need an exclusive lock |
# If this is compressed, we will actually need an exclusive lock |
if (-e "$file_prefix.db.gz") { |
if (-e "$file_prefix.db.gz" |
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|| !-e "$file_prefix.db.old" ) { |
if (!&flock_sym(LOCK_EX)) { |
if (!&flock_sym(LOCK_EX)) { |
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&clean_sym(); |
return undef; |
return undef; |
} |
} |
} |
} |
Line 281 sub _do_hash_untie {
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Line 281 sub _do_hash_untie {
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open($sym,">>$file_prefix.db.lock"); |
open($sym,">>$file_prefix.db.lock"); |
# Writing needs exclusive lock |
# Writing needs exclusive lock |
if (!&flock_sym(LOCK_EX)) { |
if (!&flock_sym(LOCK_EX)) { |
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&clean_sym(); |
return undef; |
return undef; |
} |
} |
} else { |
} else { |
Line 294 sub _do_hash_untie {
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Line 295 sub _do_hash_untie {
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system("gunzip $file_prefix.hist.gz"); |
system("gunzip $file_prefix.hist.gz"); |
} |
} |
} |
} |
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if (!-e "$file_prefix.db.old") { |
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my $dump_db = '/home/httpd/perl/debug/dump_db_static_32'; |
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my $create_db = '/home/httpd/perl/debug/create_db_dynamic_64'; |
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my $file = "$file_prefix.db"; |
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&main::logthis("Converting $file"); |
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if (!-x $dump_db) { |
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&clean_symb(); |
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&main::logthis("$dump_db unexecutable"); |
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return; |
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} |
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if (!-x $create_db) { |
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&clean_symb(); |
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&main::logthis("$create_db unexecutable"); |
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return; |
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} |
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system("$dump_db -f $file|$create_db -f $file.new"); |
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if (!-e "$file.new") { |
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&clean_symb(); |
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&main::logthis("conversion faile $file.new doesn't exist"); |
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return; |
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} |
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rename($file,"$file.old"); |
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rename("$file.new","$file"); |
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} |
# Change access mode to non-blocking |
# Change access mode to non-blocking |
$how=$how|&GDBM_NOLOCK(); |
$how=$how|&GDBM_NOLOCK(); |
# Go ahead and tie the hash |
# Go ahead and tie the hash |
return &_do_hash_tie($file_prefix,$namespace,$how,$loghead,$what); |
my $result = |
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&_do_hash_tie($file_prefix,$namespace,$how,$loghead,$what); |
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if (!$result) { |
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&clean_sym(); |
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} |
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return $result; |
} |
} |
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sub flock_sym { |
sub flock_sym { |
Line 326 sub _do_hash_untie {
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Line 356 sub _do_hash_untie {
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my $result = untie(%$hashref); |
my $result = untie(%$hashref); |
flock($sym,LOCK_UN); |
flock($sym,LOCK_UN); |
close($sym); |
close($sym); |
undef($sym); |
&clean_sym(); |
return $result; |
return $result; |
} |
} |
} |
} |