wasCSharpSQLite – Blame information for rev 4

Subversion Repositories:
Rev:
Rev Author Line No. Line
1 office 1 # 2010 April 14
2 #
3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
5 #
6 # May you do good and not evil.
7 # May you find forgiveness for yourself and forgive others.
8 # May you share freely, never taking more than you give.
9 #
10 #***********************************************************************
11 # This file contains code used by several different test scripts. The
12 # code in this file allows testfixture to control another process (or
13 # processes) to test locking.
14 #
15  
16 proc do_multiclient_test {varname script} {
17  
18 foreach code [list {
19 if {[info exists ::G(valgrind)]} { db close ; continue }
20 set ::code2_chan [launch_testfixture]
21 set ::code3_chan [launch_testfixture]
22 proc code2 {tcl} { testfixture $::code2_chan $tcl }
23 proc code3 {tcl} { testfixture $::code3_chan $tcl }
24 set tn 1
25 } {
26 proc code2 {tcl} { uplevel #0 $tcl }
27 proc code3 {tcl} { uplevel #0 $tcl }
28 set tn 2
29 }] {
30 faultsim_delete_and_reopen
31  
32 proc code1 {tcl} { uplevel #0 $tcl }
33  
34 # Open connections [db2] and [db3]. Depending on which iteration this
35 # is, the connections may be created in this interpreter, or in
36 # interpreters running in other OS processes. As such, the [db2] and [db3]
37 # commands should only be accessed within [code2] and [code3] blocks,
38 # respectively.
39 #
40 eval $code
41 code2 { sqlite3 db2 test.db }
42 code3 { sqlite3 db3 test.db }
43  
44 # Shorthand commands. Execute SQL using database connection [db2] or
45 # [db3]. Return the results.
46 #
47 proc sql1 {sql} { db eval $sql }
48 proc sql2 {sql} { code2 [list db2 eval $sql] }
49 proc sql3 {sql} { code3 [list db3 eval $sql] }
50  
51 proc csql1 {sql} { list [catch { sql1 $sql } msg] $msg }
52 proc csql2 {sql} { list [catch { sql2 $sql } msg] $msg }
53 proc csql3 {sql} { list [catch { sql3 $sql } msg] $msg }
54  
55 uplevel set $varname $tn
56 uplevel $script
57  
58 catch { code2 { db2 close } }
59 catch { code3 { db3 close } }
60 catch { close $::code2_chan }
61 catch { close $::code3_chan }
62 catch { db close }
63 }
64 }
65  
66 # Launch another testfixture process to be controlled by this one. A
67 # channel name is returned that may be passed as the first argument to proc
68 # 'testfixture' to execute a command. The child testfixture process is shut
69 # down by closing the channel.
70 proc launch_testfixture {{prg ""}} {
71 write_main_loop
72 if {$prg eq ""} { set prg [info nameofexec] }
73 if {$prg eq ""} { set prg testfixture }
74 if {[file tail $prg]==$prg} { set prg [file join . $prg] }
75 set chan [open "|$prg tf_main.tcl" r+]
76 fconfigure $chan -buffering line
77 set rc [catch {
78 testfixture $chan "sqlite3_test_control_pending_byte $::sqlite_pending_byte"
79 }]
80 if {$rc} {
81 testfixture $chan "set ::sqlite_pending_byte $::sqlite_pending_byte"
82 }
83 return $chan
84 }
85  
86 # Execute a command in a child testfixture process, connected by two-way
87 # channel $chan. Return the result of the command, or an error message.
88 #
89 proc testfixture {chan cmd} {
90 puts $chan $cmd
91 puts $chan OVER
92 set r ""
93 while { 1 } {
94 set line [gets $chan]
95 if { $line == "OVER" } {
96 set res [lindex $r 1]
97 if { [lindex $r 0] } { error $res }
98 return $res
99 }
100 if {[eof $chan]} {
101 return "ERROR: Child process hung up"
102 }
103 append r $line
104 }
105 }
106  
107 proc testfixture_nb_cb {varname chan} {
108 if {[eof $chan]} {
109 append ::tfnb($chan) "ERROR: Child process hung up"
110 set line "OVER"
111 } else {
112 set line [gets $chan]
113 }
114  
115 if { $line == "OVER" } {
116 set $varname [lindex $::tfnb($chan) 1]
117 unset ::tfnb($chan)
118 close $chan
119 } else {
120 append ::tfnb($chan) $line
121 }
122 }
123  
124 proc testfixture_nb {varname cmd} {
125 set chan [launch_testfixture]
126 set ::tfnb($chan) ""
127 fconfigure $chan -blocking 0 -buffering none
128 puts $chan $cmd
129 puts $chan OVER
130 fileevent $chan readable [list testfixture_nb_cb $varname $chan]
131 return ""
132 }
133  
134 # Write the main loop for the child testfixture processes into file
135 # tf_main.tcl. The parent (this script) interacts with the child processes
136 # via a two way pipe. The parent writes a script to the stdin of the child
137 # process, followed by the word "OVER" on a line of its own. The child
138 # process evaluates the script and writes the results to stdout, followed
139 # by an "OVER" of its own.
140 #
141 set main_loop_written 0
142 proc write_main_loop {} {
143 if {$::main_loop_written} return
144 set wrapper ""
145 if {[sqlite3 -has-codec] && [info exists ::do_not_use_codec]==0} {
146 set wrapper "
147 rename sqlite3 sqlite_orig
148 proc sqlite3 {args} {[info body sqlite3]}
149 "
150 }
151  
152 set fd [open tf_main.tcl w]
153 puts $fd [string map [list %WRAPPER% $wrapper] {
154 %WRAPPER%
155 set script ""
156 while {![eof stdin]} {
157 flush stdout
158 set line [gets stdin]
159 if { $line == "OVER" } {
160 set rc [catch {eval $script} result]
161 puts [list $rc $result]
162 puts OVER
163 flush stdout
164 set script ""
165 } else {
166 append script $line
167 append script "\n"
168 }
169 }
170 }]
171 close $fd
172 set main_loop_written 1
173 }
174