108 lines
2.7 KiB
Tcl
108 lines
2.7 KiB
Tcl
# 2007 September 10
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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# $Id: thread_common.tcl,v 1.5 2009/03/26 14:48:07 danielk1977 Exp $
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if {[info exists ::thread_procs]} {
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return 0
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}
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# The following script is sourced by every thread spawned using
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# [sqlthread spawn]:
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set thread_procs {
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# Execute the supplied SQL using database handle $::DB.
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#
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proc execsql {sql} {
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set rc SQLITE_LOCKED
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while {$rc eq "SQLITE_LOCKED"
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|| $rc eq "SQLITE_BUSY"
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|| $rc eq "SQLITE_SCHEMA"} {
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set res [list]
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enter_db_mutex $::DB
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set err [catch {
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set ::STMT [sqlite3_prepare_v2 $::DB $sql -1 dummy_tail]
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} msg]
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if {$err == 0} {
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while {[set rc [sqlite3_step $::STMT]] eq "SQLITE_ROW"} {
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for {set i 0} {$i < [sqlite3_column_count $::STMT]} {incr i} {
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lappend res [sqlite3_column_text $::STMT 0]
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}
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}
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set rc [sqlite3_finalize $::STMT]
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} else {
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if {[lindex $msg 0]=="(6)"} {
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set rc SQLITE_LOCKED
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} else {
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set rc SQLITE_ERROR
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}
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}
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if {[string first locked [sqlite3_errmsg $::DB]]>=0} {
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set rc SQLITE_LOCKED
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}
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if {$rc ne "SQLITE_OK"} {
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set errtxt "$rc - [sqlite3_errmsg $::DB] (debug1)"
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}
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leave_db_mutex $::DB
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if {$rc eq "SQLITE_LOCKED" || $rc eq "SQLITE_BUSY"} {
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#sqlthread parent "puts \"thread [sqlthread id] is busy. rc=$rc\""
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after 200
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} else {
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#sqlthread parent "puts \"thread [sqlthread id] ran $sql\""
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}
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}
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if {$rc ne "SQLITE_OK"} {
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error $errtxt
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}
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set res
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}
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proc do_test {name script result} {
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set res [eval $script]
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if {$res ne $result} {
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error "$name failed: expected \"$result\" got \"$res\""
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}
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}
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}
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proc thread_spawn {varname args} {
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sqlthread spawn $varname [join $args {;}]
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}
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# Return true if this build can run the multi-threaded tests.
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#
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proc run_thread_tests {{print_warning 0}} {
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ifcapable !mutex {
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set zProblem "SQLite build is not threadsafe"
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}
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if {[info commands sqlthread] eq ""} {
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set zProblem "SQLite build is not threadsafe"
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}
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if {![info exists ::tcl_platform(threaded)]} {
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set zProblem "Linked against a non-threadsafe Tcl build"
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}
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if {[info exists zProblem]} {
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puts "WARNING: Multi-threaded tests skipped: $zProblem"
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return 0
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}
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set ::run_thread_tests_called 1
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return 1;
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}
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return 0
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