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|
set stapi_prompt "stap>"
set stapi_spawn_id 0
# stapi_start ARGS
#
# Start "stap -i" with ARGS.
#
# ARGS are the optional additional arguments to pass to systemtap.
#
# Returns:
# 1 if starting systemtap failed,
# 0 if systemtap was started.
proc stapi_start { {args ""} } {
global stapi_spawn_id
global spawn_id
if {[info exists stapi_spawn_id] && $stapi_spawn_id != 0} { return }
if {![string match "" $args]} {
set rc [catch {spawn stap -i $args} out]
} else {
set rc [catch {spawn stap -i} out]
}
if {$rc} {
verbose -log "$out"
fail "Couldn't start \"stap -i\""
return 1
}
pass "Started stap -i"
set stapi_spawn_id $spawn_id
# If the pathnames given to the interactive stap's 'load' command
# are long, then readline will try to scroll them, causing lots of
# control characters in the output. This confuses us when reading
# the output. Instead of trying to interpret the control
# characters, just lie and tell the system stap's terminal is
# *really* wide, to avoid the need to scroll.
stty columns 4096 < $spawn_out(slave,name)
return 0
}
# stapi_exit
#
# Finish up the interactive systemtap.
proc stapi_exit { } {
global stapi_spawn_id
if {![info exists stapi_spawn_id] || $stapi_spawn_id == 0} { return }
catch {
send -i $stapi_spawn_id "quit\n"
expect {
-timeout 5
timeout { verbose -log "quit timeout"; kill -INT -[exp_pid] }
eof { }
}
}
# again for good measure with KILL after 3s
kill -INT -[exp_pid -i $stapi_spawn_id] 3
catch {close}; catch {wait}
set stapi_spawn_id 0
}
# stapi_test_no_output COMMAND MESSAGE
#
# Send a command to GDB and verify that this command generated no output.
#
# COMMAND is the command to execute.
# MESSAGE is the message to be used in a pass/fail text. If MESSAGE is
# empty, no pass/fail will be reported.
#
# Returns:
# 1 if the test failed,
# 0 if the test passes.
# -1 if there was an internal error.
proc stapi_test_no_output { command {message ""} } {
global stapi_prompt
global stapi_spawn_id
set rc 1
verbose -log "Sending \"$command\" to stapi"
if {! [info exists stapi_spawn_id]} { return }
send -i $stapi_spawn_id "$command\n"
expect {
-timeout 5
-re "(${command}\r\n$stapi_prompt )$" {
set rc 0
}
eof { verbose -log "\"$command\" EOF"; set rc -1 }
timeout { verbose -log "\"$command\" timeout" }
}
if {![string match "" $message]} {
if {!$rc} {
pass "$message"
} elseif {$rc < 0} {
fail "$message (EOF)"
} else {
fail "$message"
}
}
return $rc
}
# stapi_test_question COMMAND QUESTION RESPONSE MESSAGE
#
# Send a command to interactive stap (stap -i); expect a question, and
# send an answer.
#
# COMMAND is the command to execute.
# QUESTION is a question interactive stap may ask in response to
# COMMAND, like "are you sure?"
# RESPONSE is the response to send when QUESTION appears.
# MESSAGE is the message to be used in a pass/fail text. If MESSAGE is
# empty, no pass/fail will be reported.
#
# Returns:
# 1 if the test failed,
# 0 if the test passes.
# -1 if there was an internal error.
proc stapi_test_question { command question response {message ""} } {
global stapi_prompt
global stapi_spawn_id
set rc 0
verbose -log "Sending \"$command\" to stapi"
send -i $stapi_spawn_id "$command\n"
expect {
-timeout 5
-re "(${question})$" {
send -i $stapi_spawn_id "$response\n"
incr rc
exp_continue
}
-re "($response\r\n$stapi_prompt )$" {
incr rc
}
eof { verbose -log "\"$command\" EOF"; set rc -1 }
timeout { verbose -log "\"$command\" timeout" }
}
if {$rc == 2} {
set rc 0
} elseif {$rc > 0} {
set rc 1
}
if {![string match "" $message]} {
if {!$rc} {
pass "$message"
} elseif {$rc < 0} {
fail "$message (EOF)"
} else {
fail "$message"
}
}
return $rc
}
# stapi_run_batch USE_CACHE
#
# Call "run" in interactive systemtap to compile a script. This code
# is somewhat analagous to stap_run_batch() in
# testsuite/lib/systemtap.exp.
#
# USE_CACHE is set to 0 to indicate the cache should not have been
# used when compiling, 1 for cache use.
#
# Returns:
# 2 if the script compiled, but the cache wasn't used appropriately.
# 1 if the script couldn't be compiled.
# 0 if the test passes.
# -1 if there was an internal error.
# -2 if there was a timeout error.
proc stapi_run_batch { {use_cache 0} } {
global stapi_prompt
global stapi_spawn_id
verbose -log "Sending \"run\" to stapi"
send -i $stapi_spawn_id "run\n"
set rc 0
set error_seen 0
set cache_used 0
set eof_seen 0
set timeout_seen 0
expect {
-timeout 600
-re "compilation failed" { set error_seen 1; exp_continue }
-re "semantic error:" { set error_seen 1; exp_continue }
-re {Pass\ ([1234]):[^\r]*\ in\ ([0-9]+)usr/([0-9]+)sys/([0-9]+)real\ ms\.\r\n} {
incr rc; exp_continue
}
-re {Pass\ ([34]): using cached [^\r]+\r\n} {
set cache_used 1
incr rc; exp_continue
}
-re {Passes: via server [^\r]* using [^\r]* in [0-9]+usr/[0-9]+sys/[0-9]+real ms\.\r\n} {
exp_continue
}
-re "$stapi_prompt" {
# If this is the prompt after the script has been compiled
# (we've seen some/all of the "Pass [1234]" lines, then we
# can quit (by not calling 'exp_continue').
if {$rc > 0} {
incr rc
} else {
exp_continue
}
}
eof { verbose -log "stapi_run_batch EOF"; set eof_seen 1 }
timeout { verbose -log "stapi_run_batch timeout"
set timeout_seen 1 }
}
if {$eof_seen} {
return -1
} elseif {$timeout_seen} {
return -2
} elseif {$rc != 5 || $error_seen} {
return 1
}
# If rc == 5, we've seen 4 "Pass [1234]" lines and then the stap
# prompt, the compilation worked.
#
# But, even if the script compiled correctly, was the cache used
# (or not) correctly?
if {$cache_used == $use_cache} { return 0 }
return 2
}
|
