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package Child::Link::Proc; |
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use strict; |
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use warnings; |
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use Carp; |
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934
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use Carp; |
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962
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use Child::Util; |
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795
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use base 'Child::Link'; |
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7392
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add_accessors qw/exit/; |
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sub is_complete { |
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1
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2001647
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my $self = shift; |
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115
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$self->_wait(); |
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return defined($self->exit); |
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} |
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sub wait { |
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my $self = shift; |
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return unless $self->_wait(1); |
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return !$self->exit; |
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} |
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sub exit_status { |
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1
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my $self = shift; |
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return unless $self->is_complete; |
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return ($self->exit >> 8); |
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} |
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sub unix_exit { |
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my $self = shift; |
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3
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return unless $self->is_complete; |
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3
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return $self->exit; |
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} |
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sub _wait { |
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my $self = shift; |
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my ( $block ) = @_; |
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#non-blocking to check if process was terminated |
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#blocking to wait until it finishes |
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100
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unless ( defined $self->exit ) { |
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my @flags; |
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100
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3772
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require POSIX unless $block; |
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my $ret; |
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my $x = 1; |
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66
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do { |
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sleep(1) if defined $ret; |
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100
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$ret = waitpid( $self->pid, $block ? 0 : &POSIX::WNOHANG ); |
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} while ( $block && !$ret ); |
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100
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return 0 unless $ret; |
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if ($^O eq 'MSWin32') { |
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0
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0
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croak( "wait returned $ret: No such process " . $self->pid ) |
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if $ret == -1; #forked threads on Win32 have negative pids |
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} else { |
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croak( "wait returned $ret: No such process " . $self->pid ) |
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if $ret < 0; |
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} |
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194
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Child->_clean_proc($self); |
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115
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$self->_exit( $? ); |
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} |
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return defined($self->exit); |
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} |
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65
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sub kill { |
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7
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7
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1
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3004489
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my $self = shift; |
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7
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27
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my ( $sig ) = @_; |
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7
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kill( $sig, $self->pid ); |
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} |
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71
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1; |
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73
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=head1 NAME |
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75
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Child::Link::Proc - Proc object used by L. |
76
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77
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=head1 SEE ALSO |
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79
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This class inherits from: |
80
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81
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=over 4 |
82
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83
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=item L |
84
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85
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=back |
86
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87
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=head1 METHODS |
88
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89
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=over 4 |
90
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91
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=item $bool = $proc->is_complete() |
92
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93
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Check if the child is finished (non-blocking) |
94
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95
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=item $proc->wait() |
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97
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Wait until child terminates, destroy remaining zombie process (blocking) |
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99
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=item $proc->kill($SIG) |
100
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101
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Send the $SIG signal to the child process. |
102
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103
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B: kill() is unpredictable on windows, strawberry perl sends the kill |
104
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signal to the parent as well as the child. |
105
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106
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=item $proc->pid() |
107
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108
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Returns the process PID. |
109
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110
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=item $proc->exit_status() |
111
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112
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Will be undef unless the process has exited, otherwise it will have the exit |
113
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status. |
114
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115
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B: When you call exit($N) the actual unix exit status will be bit shifted |
116
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with extra information added. exit_status() will shift the value back for you. |
117
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That means exit_status() will return 2 when your child calls exit(2) see |
118
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unix_exit() if you want the actual value wait() assigned to $?. |
119
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120
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=item $proc->unix_exit() |
121
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122
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When you call exit($N) the actual unix exit status will be bit shifted |
123
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with extra information added. See exit_status() if you want the actual value |
124
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used in exit() in the child. |
125
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126
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=back |
127
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128
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=head1 HISTORY |
129
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130
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Most of this was part of L intended for use in the L |
131
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project. Fennec is being broken into multiple parts, this is one such part. |
132
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133
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=head1 FENNEC PROJECT |
134
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135
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This module is part of the Fennec project. See L for more details. |
136
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Fennec is a project to develop an extendable and powerful testing framework. |
137
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Together the tools that make up the Fennec framework provide a potent testing |
138
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environment. |
139
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140
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The tools provided by Fennec are also useful on their own. Sometimes a tool |
141
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created for Fennec is useful outside the greater framework. Such tools are |
142
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turned into their own projects. This is one such project. |
143
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144
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=over 2 |
145
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146
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=item L - The core framework |
147
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148
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The primary Fennec project that ties them all together. |
149
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150
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=back |
151
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152
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=head1 AUTHORS |
153
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154
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Chad Granum L |
155
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156
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=head1 COPYRIGHT |
157
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158
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Copyright (C) 2010 Chad Granum |
159
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160
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Child is free software; Standard perl licence. |
161
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162
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Child is distributed in the hope that it will be useful, but WITHOUT |
163
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
164
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FOR A PARTICULAR PURPOSE. See the license for more details. |