xref: /sqlite-3.40.0/test/thread_common.tcl (revision e9dcd5e6) 
1# 2007 September 10
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#
12# $Id: thread_common.tcl,v 1.2 2007/09/10 10:53:02 danielk1977 Exp $
13
14set testdir [file dirname $argv0]
15source $testdir/tester.tcl
16
17if {[info commands sqlthread] eq ""} {
18  puts -nonewline "Skipping thread-safety tests - "
19  puts            " not running a threadsafe sqlite/tcl build"
20  puts -nonewline "Both SQLITE_THREADSAFE and TCL_THREADS must be defined when"
21  puts            " building testfixture"
22  finish_test
23  return
24}
25
26# The following script is sourced by every thread spawned using
27# [sqlthread spawn]:
28set thread_procs {
29
30  # Execute the supplied SQL using database handle $::DB.
31  #
32  proc execsql {sql} {
33
34    set rc SQLITE_LOCKED
35    while {$rc eq "SQLITE_LOCKED"
36        || $rc eq "SQLITE_BUSY"
37        || $rc eq "SQLITE_SCHEMA"} {
38      set res [list]
39
40      set err [catch {
41        set ::STMT [sqlite3_prepare_v2 $::DB $sql -1 dummy_tail]
42      } msg]
43
44      if {$err == 0} {
45        while {[set rc [sqlite3_step $::STMT]] eq "SQLITE_ROW"} {
46          for {set i 0} {$i < [sqlite3_column_count $::STMT]} {incr i} {
47            lappend res [sqlite3_column_text $::STMT 0]
48          }
49        }
50        set rc [sqlite3_finalize $::STMT]
51      } else {
52        if {[string first (6) $msg]} {
53          set rc SQLITE_LOCKED
54        } else {
55          set rc SQLITE_ERROR
56        }
57      }
58
59      if {[string first locked [sqlite3_errmsg $::DB]]>=0} {
60        set rc SQLITE_LOCKED
61      }
62
63      if {$rc eq "SQLITE_LOCKED" || $rc eq "SQLITE_BUSY"} {
64 #puts -nonewline "([sqlthread id] $rc)"
65 #flush stdout
66        after 20
67      }
68    }
69
70    if {$rc ne "SQLITE_OK"} {
71      error "$rc - [sqlite3_errmsg $::DB]"
72    }
73    set res
74  }
75
76  proc do_test {name script result} {
77    set res [eval $script]
78    if {$res ne $result} {
79      error "$name failed: expected \"$result\" got \"$res\""
80    }
81  }
82}
83
84proc thread_spawn {varname args} {
85  sqlthread spawn $varname [join $args ;]
86}
87
88return 0
89