gdb/testsuite/gdb.trace/tspeed.exp

# Copyright 2011-2021 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

load_lib "trace-support.exp"

if {[skip_shlib_tests]} {
    return 0
}

# Do not run if gdbsever debug is enabled - the output file is many Gb.
if [gdbserver_debug_enabled] {
    return 0
}

standard_testfile
set executable $testfile

# Check that the target supports trace.
if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile executable $options] != "" } {
    untested "failed to compile"
    return -1
}

clean_restart ${testfile}

if ![runto_main] {
    return -1
}

if ![gdb_target_supports_trace] {
    unsupported "target does not support trace"
    return -1
}

# Compile the test case with the in-process agent library.
set ipalib [get_in_proc_agent]

if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \
	  executable [concat {debug c} shlib=$ipalib]] != "" } {
    untested "failed to compile"
    return -1
}

# Typically we need a little extra time for this test.
set timeout 180

set ws "\[\r\n\t \]+"
set cr "\[\r\n\]+"

#
# Utility procs
#

proc prepare_for_trace_test {} {
    global executable
    global ipalib

    clean_restart $executable
    gdb_load_shlib $ipalib

    runto_main

    set testline [gdb_get_line_number "set pre-run breakpoint here"]

    gdb_test "break $testline" ".*" ""

    set testline [gdb_get_line_number "set post-run breakpoint here"]

    gdb_test "break $testline" ".*" ""
}

proc run_trace_experiment {} {

    gdb_test "continue" \
	".*Breakpoint \[0-9\]+, main .*" \
	"advance to trace begin"

    gdb_test_no_output "tstart" "start trace experiment"

    gdb_test "continue" \
	".*Breakpoint \[0-9\]+, main .*" \
	"advance through tracing"

    gdb_test "tstatus" ".*Trace .*" "check on trace status"

    gdb_test "tstop" "" ""
}

proc gdb_slow_trace_speed_test { } {

    gdb_delete_tracepoints

    gdb_test "print iters = init_iters" ".* = .*"

    set testline [gdb_get_line_number "set tracepoint here"]

    gdb_test "trace $testline if (globfoo != 12 && globfoo2 == 45)" \
	"Tracepoint \[0-9\]+ at .*" \
	"set slow tracepoint"

    # Begin the test.
    run_trace_experiment
}

proc gdb_fast_trace_speed_test { } {
    global gdb_prompt

    gdb_delete_tracepoints

    gdb_test "print iters = init_iters" ".* = .*"

    set run_ftrace 0

    set testline [gdb_get_line_number "set tracepoint here"]

    gdb_test_multiple "ftrace $testline if (globfoo != 12 && globfoo2 == 45)" \
	"set conditional fast tracepoint" {
	    -re "Fast tracepoint \[0-9\]+ at .*\r\n$gdb_prompt $" {
		pass "set conditional fast tracepoint, done"
		set run_ftrace 1
	    }
	    -re "May not have a fast tracepoint at .*\r\n$gdb_prompt $" {
		pass "set conditional fast tracepoint, not allowed at line"
	    }
	}

    # If the fast tracepoint couldn't be set, don't bother with the run.
    if { $run_ftrace == 1 } then {

	# Begin the test.
	run_trace_experiment
    }
}

proc gdb_trace_collection_test {} {

    prepare_for_trace_test

    gdb_slow_trace_speed_test

    gdb_fast_trace_speed_test
}

clean_restart $executable
gdb_load_shlib $ipalib

runto_main

if { ![gdb_target_supports_trace] } then {
    unsupported "current target does not support trace"
    return 1
}

# Body of test encased in a proc so we can return prematurely.
gdb_trace_collection_test