binutils-gdb/gdb/testsuite/gdb.trace/tstatus.exp

# Copyright 2011-2017 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"

standard_testfile actions.c
set executable $testfile
set expfile tstatus.exp

if [prepare_for_testing "failed to prepare" $executable $srcfile \
	[list debug]] {
    return -1
}

if ![runto_main] {
    fail "can't run to main to check for trace support"
    return -1
}

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

set tstatus_output ""

proc run_trace_experiment {} {
    global gdb_prompt
    global decimal
    global tstatus_output

#    gdb_test_no_output "set debug remote 1" ""

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

    gdb_test_no_output "tstart my tracing note" "start trace experiment"

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

    # Now play with tstatus a bit.

    # Since support for notes, user, stop reason, etc. is optional, we
    # need to match both with and without cases.

    set test "tstatus reports trace note"
    gdb_test_multiple "tstatus" $test {
	-re "Trace is running.*Trace will stop if GDB disconnects\.\[\r\n\]+Trace notes: my tracing note\.\[\r\n\]+Not looking at any trace frame\..*\r\n$gdb_prompt $" {
	    pass $test
	}
	-re "Trace is running.*Trace will stop if GDB disconnects\.\[\r\n\]+Not looking at any trace frame.*\r\n$gdb_prompt $" {
	    unsupported $test
	}
    }

    gdb_test "set trace-notes different note" "" "change tracing note"

    set test "tstatus reports different trace note"
    gdb_test_multiple "tstatus" $test {
	-re "Trace is running.*Trace will stop if GDB disconnects\.\[\r\n\]+Trace notes: different note\.\[\r\n\]+Not looking at any trace frame\..*\r\n$gdb_prompt $" {
	    pass $test
	}
	-re "Trace is running.*Trace will stop if GDB disconnects\.\[\r\n\]+Not looking at any trace frame.*\r\n$gdb_prompt $" {
	    unsupported $test
	}
    }

    gdb_test "set trace-user me me me" "" "change tracing user"

    set test "tstatus reports trace user"
    gdb_test_multiple "tstatus" $test {
	-re "Trace is running.*Trace will stop if GDB disconnects\.\[\r\n\]+Trace user is me me me\.\[\r\n\]+Trace notes: different note\.\[\r\n\]+Not looking at any trace frame\..*\r\n$gdb_prompt $" {
	    pass $test
	}
	-re "Trace is running.*Trace will stop if GDB disconnects\.\[\r\n\]+Not looking at any trace frame.*\r\n$gdb_prompt $" {
	    unsupported $test
	}
    }

    gdb_test_no_output "tstop because I can" "trace stopped with note"

    set test "tstatus reports trace stop reason"
    gdb_test_multiple "tstatus" $test {
	-re "(Trace stopped by a tstop command \\(because I can\\)\..*Trace will stop if GDB disconnects\.\[\r\n\]+Trace user is me me me\.\[\r\n\]+Trace notes: different note\.\[\r\n\]+Not looking at any trace frame\.).*\r\n$gdb_prompt $" {
	    set tstatus_output $expect_out(1,string)
	    pass $test
	}
	-re "(Trace stopped by a tstop command\.).*\r\n$gdb_prompt $" {
	    set tstatus_output $expect_out(1,string)
	    unsupported $test
	}
    }

    set test "info trace reports tracepoint hit count and traceframe usage"
    gdb_test_multiple "info trace" $test {
	-re "actions\.c:\[0-9\]+\[\r\n\]+\[\t ]+tracepoint already hit 1 time\[\r\n\]+\[\t ]+trace buffer usage ${decimal} bytes\.\[\r\n\]+\[\t ]+collect parm.*\r\n$gdb_prompt $" {
	    pass $test
	}
	-re "actions\.c:\[0-9\]+\[\r\n\]+\[\t ]+collect parm.*\r\n$gdb_prompt $" {
	    unsupported $test
	}
    }
}

proc test_tracepoints {} {
    global gdb_prompt

    gdb_test "break begin" ".*" ""

    gdb_test "break end" ".*" ""

    gdb_test "trace gdb_c_test" "Tracepoint .*" \
	"tracepoint at gdb_c_test"

    gdb_trace_setactions "collect at set_point: define actions" \
	"" \
	"collect parm" "^$"

    run_trace_experiment

}

test_tracepoints

set tracefile [standard_output_file ${testfile}]
# Save trace frames to tfile.
gdb_test "tsave ${tracefile}.tf" \
    "Trace data saved to file '${tracefile}.tf'.*" \
    "save tfile trace file"
# Save trace frames to CTF.
gdb_test "tsave -ctf ${tracefile}.ctf" \
    "Trace data saved to directory '${tracefile}.ctf'.*" \
    "save ctf trace file"

# Change target to tfile.
set test "change to tfile target"
gdb_test_multiple "target tfile ${tracefile}.tf" "$test" {
    -re "A program is being debugged already.  Kill it. .y or n. " {
	send_gdb "y\n"
	exp_continue
    }
    -re "$gdb_prompt $" {
	pass "$test"
    }
}

# Convert "(because I can) to "\(because I can\)"
set tstatus_output [string map {\( \\(} $tstatus_output]
set tstatus_output [string map {\) \\)} $tstatus_output]

# The status should be identical to the status of live inferior.
gdb_test "tstatus" "Using a trace file\.\r\n${tstatus_output}.*" \
    "tstatus on tfile target"

# Change target to ctf if GDB supports.
gdb_test_multiple "target ctf ${tracefile}.ctf" "" {
    -re "Undefined target command: \"ctf ${tracefile}.ctf\"\.  Try \"help target\"\.\r\n$gdb_prompt $" {
    }
    -re ".*\r\n$gdb_prompt $" {
	gdb_test "tstatus" "Using a trace file\.\r\n${tstatus_output}.*" \
	    "tstatus on ctf target"
    }
}