(command.CommandList children: [ (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:tracing) op: Equal rhs: {(/sys/kernel/debug/tracing)} ) ] ) (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:flock) op:Equal rhs:{(/var/tmp/.ftrace-lock)})] ) (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:bufsize_kb) op:Equal rhs:{(4096)})] ) (command.CommandList children: [ (command.Sentence child: (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_duration) op:Equal rhs:{(0)})] ) terminator: <Op_Semi ';'> ) (command.Sentence child: (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:duration) op:Equal rhs:(word.EmptyWord))] ) terminator: <Op_Semi ';'> ) (command.Sentence child: (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_name) op:Equal rhs:{(0)})] ) 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(command.BraceGroup children: [ (command.SimpleCommand words: [{(cat)}] redirects: [ (redir.HereDoc op: <Redir_DLessDash '<<-'> fd: 16777215 here_begin: {(END)} here_end_span_id: 278 stdin_parts: [ ('USAGE: iosnoop [-hQst] [-d device] [-i iotype] [-p PID] [-n name]\n') (' [duration]\n') (' -d device # device string (eg, ') (Right_DoubleQuote '"') ('202,1)\n') (" -i iotype # match type (eg, '*R*' for all reads)\n") (' -n name # process name to match on I/O issue\n') (' -p PID # PID to match on I/O issue\n') (' -Q # use queue insert as start time\n') (' -s # include start time of I/O (s)\n') (' -t # include completion time of I/O (s)\n') (' -h # this usage message\n') (' duration # duration seconds, and use buffers\n') (' eg,\n') (' iosnoop # watch block I/O live (unbuffered)\n') (' iosnoop 1 # trace 1 sec (buffered)\n') (' iosnoop -Q # include queueing time in LATms\n') (' iosnoop -ts # include start and end timestamps\n') (" iosnoop -i '*R*' # trace reads\n") (' iosnoop -p 91 # show I/O issued when PID 91 is on-CPU\n') (' iosnoop -Qp 91 # show I/O queued by PID 91, queue time\n') ('\n') ('See the man page and example file for more info.\n') ] ) (redir.Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)}) ] ) (command.ControlFlow token:<ControlFlow_Exit exit>) ] ) ) (command.FuncDef name: warn body: (command.BraceGroup children: [ (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.Pipeline children: [(C {(eval)} {(DQ ($ VSub_At '$@'))})] negated: T ) terminator: <Op_Semi ';'> ) ] action: [ (command.SimpleCommand words: [ {(echo)} { (DQ ('WARNING: command failed ') (word_part.EscapedLiteralPart token: <Lit_EscapedChar '\\"'> ) ($ VSub_At '$@') (word_part.EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) ) } ] redirects: [(redir.Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)})] ) ] ) ] ) ] ) ) (command.FuncDef name: end body: (command.BraceGroup children: [ (command.SimpleCommand words: [{(echo)}] redirects: [(redir.Redir op:<Redir_Great '2>'> fd:2 arg_word:{(/dev/null)})] ) (command.SimpleCommand words: [{(echo)} {(DQ ('Ending tracing...'))}] redirects: [(redir.Redir op:<Redir_Great '2>'> fd:2 arg_word:{(/dev/null)})] ) (C {(cd)} {($ VSub_DollarName '$tracing')}) (C {(warn)} {(DQ ('echo 0 > events/block/') ($ VSub_DollarName '$b_start') (/enable))}) (C {(warn)} {(DQ ('echo 0 > events/block/block_rq_complete/enable'))}) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DParen child: (arith_expr.ArithBinary op_id: Arith_DPipe left: (arith_expr.ArithBinary op_id: Arith_DPipe left: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_device>) right: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_iotype>) ) right: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_pid>) ) ) terminator: <Op_Semi ';'> ) ] action: [ (C {(warn)} {(DQ ('echo 0 > events/block/') ($ VSub_DollarName '$b_start') (/filter))} ) (C {(warn)} {(DQ ('echo 0 > events/block/block_rq_complete/filter'))}) ] ) ] ) (C {(warn)} {(DQ ('echo > trace'))}) (command.AndOr ops: [Op_DAmp] children: [ (command.DParen child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike wroteflock>) ) (C {(warn)} {(DQ ('rm ') ($ VSub_DollarName '$flock'))}) ] ) ] ) ) (command.FuncDef name: die body: (command.BraceGroup children: [ (command.SimpleCommand words: [{(echo)} {(DQ ($ VSub_At '$@'))}] redirects: [(redir.Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)})] ) (command.ControlFlow token:<ControlFlow_Exit exit> arg_word:{(1)}) ] ) ) (command.FuncDef name: edie body: (command.BraceGroup children: [ (command.SimpleCommand words: [{(echo)} {(DQ ($ VSub_At '$@'))}] redirects: [(redir.Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)})] ) (command.SimpleCommand words: [{(exec)}] redirects: [ (redir.Redir op:<Redir_Great '>'> fd:16777215 arg_word:{(/dev/null)}) (redir.Redir op:<Redir_GreatAnd '2>&'> fd:2 arg_word:{(1)}) ] ) (C {(end)}) (command.ControlFlow token:<ControlFlow_Exit exit> arg_word:{(1)}) ] ) ) (command.WhileUntil keyword: <KW_While while> cond: [ (C {(getopts)} {(d) (Lit_Other ':') (hi) (Lit_Other ':') (n) (Lit_Other ':') (p) (Lit_Other ':') (Qst)} {(opt)} ) ] body: (command.DoGroup children: [ (command.Case to_match: {($ VSub_DollarName '$opt')} arms: [ (case_arm pat_list: [{(d)}] action: [ (command.Sentence child: (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:opt_device) op: Equal rhs: {(1)} ) ] ) terminator: <Op_Semi ';'> ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:device) op: Equal rhs: {($ VSub_DollarName '$OPTARG')} ) ] ) ] ) (case_arm pat_list: [{(i)}] action: [ (command.Sentence child: (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:opt_iotype) op: Equal rhs: {(1)} ) ] ) terminator: <Op_Semi ';'> ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:iotype) op: Equal rhs: {($ VSub_DollarName '$OPTARG')} ) ] ) ] ) (case_arm pat_list: [{(n)}] action: [ (command.Sentence child: (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_name) op:Equal rhs:{(1)})] ) terminator: <Op_Semi ';'> ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:name) op: Equal rhs: {($ VSub_DollarName '$OPTARG')} ) ] ) ] ) (case_arm pat_list: [{(p)}] action: [ (command.Sentence child: (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_pid) op:Equal rhs:{(1)})] ) terminator: <Op_Semi ';'> ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:pid) op: Equal rhs: {($ VSub_DollarName '$OPTARG')} ) ] ) ] ) (case_arm pat_list: [{(Q)}] action: [ (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_queue) op:Equal rhs:{(1)})] ) ] ) (case_arm pat_list: [{(s)}] action: [ (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_start) op:Equal rhs:{(1)})] ) ] ) (case_arm pat_list: [{(t)}] action: [ (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_end) op:Equal rhs:{(1)})] ) ] ) (case_arm pat_list:[{(h)} {(Lit_Other '?')}] action:[(C {(usage)})]) ] ) ] ) ) (C {(shift)} { (word_part.ArithSubPart anode: (arith_expr.ArithBinary op_id: Arith_Minus left: (arith_expr.ArithWord w:{($ VSub_DollarName '$OPTIND')}) right: (arith_expr.ArithWord w:{(Lit_Digits 1)}) ) ) } ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DParen child:(arith_expr.ArithWord w:{($ VSub_Pound '$#')})) terminator: <Op_Semi ';'> ) ] action: [ (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_duration) op:Equal rhs:{(1)})] ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:duration) op: Equal rhs: {($ VSub_Number '$1')} ) ] ) (C {(shift)}) ] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DParen child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_device>) ) terminator: <Op_Semi ';'> ) ] action: [ (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:major) op: Equal rhs: { (word_part.BracedVarSub token: <VSub_Name device> suffix_op: (suffix_op.StringUnary op_id:VOp1_Percent arg_word:{(',*')}) ) } ) ] ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:minor) op: Equal rhs: { (word_part.BracedVarSub token: <VSub_Name device> suffix_op: (suffix_op.StringUnary op_id:VOp1_Pound arg_word:{('*,')}) ) } ) ] ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:dev) op: Equal rhs: { (word_part.ArithSubPart anode: (arith_expr.ArithBinary op_id: Arith_Plus left: (arith_expr.ArithBinary op_id: Arith_DLess left: (arith_expr.ArithVarRef token:<Lit_ArithVarLike major>) right: (arith_expr.ArithWord w:{(Lit_Digits 20)}) ) right: (arith_expr.ArithVarRef token:<Lit_ArithVarLike minor>) ) ) } ) ] ) ] ) ] ) (command.AndOr ops: [Op_DAmp] children: [ (command.DParen child: (arith_expr.ArithBinary op_id: Arith_DAmp left: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_pid>) right: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_name>) ) ) (C {(die)} {(DQ ('ERROR: use either -p or -n.'))}) ] ) (command.AndOr ops: [Op_DAmp] children: [ (command.DParen child:(arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_pid>)) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:ftext) op: Equal rhs: {(DQ (' issued by PID ') ($ VSub_DollarName '$pid'))} ) ] ) ] ) (command.AndOr ops: [Op_DAmp] children: [ (command.DParen child:(arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_name>)) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:ftext) op: Equal rhs: { (DQ (' issued by process name ') (word_part.EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) ($ VSub_DollarName '$name') (word_part.EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) ) } ) ] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DParen child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_duration>) ) terminator: <Op_Semi ';'> ) ] action: [ (C {(echo)} { (DQ ('Tracing block I/O') ($ VSub_DollarName '$ftext') (' for ') ($ VSub_DollarName '$duration') (' seconds (buffered)...') ) } ) ] ) ] else_action: [ (C {(echo)} {(DQ ('Tracing block I/O') ($ VSub_DollarName '$ftext') ('. Ctrl-C to end.'))}) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DParen child:(arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_queue>)) terminator: <Op_Semi ';'> ) ] action: [ (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:b_start) op: Equal rhs: {(block_rq_insert)} ) ] ) ] ) ] else_action: [ (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:b_start) op:Equal rhs:{(block_rq_issue)})] ) ] ) (command.AndOr ops: [Op_DAmp Op_DPipe] children: [ (command.DParen child:(arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_duration>)) (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:use) op:Equal rhs:{(mawk)})] ) (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:use) op:Equal rhs:{(gawk)})] ) ] ) (command.AndOr ops: [Op_DAmp Op_DPipe] children: [ (command.DBracket expr: (bool_expr.BoolUnary op_id:BoolUnary_x child:{(/usr/bin/) ($ VSub_DollarName '$use')}) ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:awk) op: Equal rhs: {($ VSub_DollarName '$use')} ) ] ) (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:awk) op:Equal rhs:{(awk)})] ) ] ) (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:wroteflock) op:Equal rhs:{(1)})] ) (command.AndOr ops: [Op_DPipe] children: [ (C {(cd)} {($ VSub_DollarName '$tracing')}) (C {(die)} { (DQ ('ERROR: accessing tracing. Root user? Kernel has FTRACE?\n') (' debugfs mounted? (mount -t debugfs debugfs /sys/kernel/debug)') ) } ) ] ) (command.AndOr ops: [Op_DAmp] children: [ (command.DBracket expr: (bool_expr.BoolUnary op_id:BoolUnary_e child:{($ VSub_DollarName '$flock')}) ) (C {(die)} { (DQ ('ERROR: ftrace may be in use by PID ') (word_part.CommandSubPart command_list: (command.CommandList children: [(C {(cat)} {($ VSub_DollarName '$flock')})] ) left_token: <Left_CommandSub '$('> ) (' ') ($ VSub_DollarName '$flock') ) } ) ] ) (command.AndOr ops: [Op_DPipe] children: [ (command.SimpleCommand words: [{(echo)} {($ VSub_Dollar '$$')}] redirects: [ (redir.Redir op: <Redir_Great '>'> fd: 16777215 arg_word: {($ VSub_DollarName '$flock')} ) ] ) (C {(die)} {(DQ ('ERROR: unable to write ') ($ VSub_DollarName '$flock') (.))}) ] ) (command.SimpleCommand words: [{(echo)} {(nop)}] redirects: [(redir.Redir op:<Redir_Great '>'> fd:16777215 arg_word:{(current_tracer)})] ) (C {(warn)} {(DQ ('echo ') ($ VSub_DollarName '$bufsize_kb') (' > buffer_size_kb'))}) (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:filter) op:Equal rhs:(word.EmptyWord))] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DParen child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_iotype>) ) terminator: <Op_Semi ';'> ) ] action: [ (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:filter) op: Equal rhs: { (DQ ('rwbs ~ ') (word_part.EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) ($ VSub_DollarName '$iotype') (word_part.EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) ) } ) ] ) ] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DParen child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_device>) ) terminator: <Op_Semi ';'> ) ] action: [ (command.AndOr ops: [Op_DAmp] children: [ (command.DBracket expr: (bool_expr.BoolBinary op_id: BoolBinary_GlobNEqual left: {(DQ ($ VSub_DollarName '$filter'))} right: {(DQ )} ) ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:filter) op: Equal rhs: {(DQ ($ VSub_DollarName '$filter') (' && '))} ) ] ) ] ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:filter) op: Equal rhs: {(DQ (${ VSub_Name filter) ('dev == ') ($ VSub_DollarName '$dev'))} ) ] ) ] ) ] ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:filter_i) op: Equal rhs: {($ VSub_DollarName '$filter')} ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DParen child:(arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_pid>)) terminator: <Op_Semi ';'> ) ] action: [ (command.AndOr ops: [Op_DAmp] children: [ (command.DBracket expr: (bool_expr.BoolBinary op_id: BoolBinary_GlobNEqual left: {(DQ ($ VSub_DollarName '$filter_i'))} right: {(DQ )} ) ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:filter_i) op: Equal rhs: {(DQ ($ VSub_DollarName '$filter_i') (' && '))} ) ] ) ] ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:filter_i) op: Equal rhs: {(DQ (${ VSub_Name filter_i) ('common_pid == ') ($ VSub_DollarName '$pid'))} ) ] ) (command.AndOr ops: [Op_DAmp] children: [ (command.DBracket expr: (bool_expr.BoolBinary op_id: BoolBinary_GlobDEqual left: {(DQ ($ VSub_DollarName '$filter'))} right: {(DQ )} ) ) (command.Assignment keyword: Assign_None pairs: [(assign_pair lhs:(lhs_expr.LhsName name:filter) op:Equal rhs:{(0)})] ) ] ) ] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DParen child: (arith_expr.ArithBinary op_id: Arith_DPipe left: (arith_expr.ArithBinary op_id: Arith_DPipe left: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_iotype>) right: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_device>) ) right: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_pid>) ) ) terminator: <Op_Semi ';'> ) ] action: [ (command.If arms: [ (if_arm cond: [ (command.AndOr ops: [Op_DPipe] children: [ (command.Pipeline children: [ (command.SimpleCommand words: [{(echo)} {(DQ ($ VSub_DollarName '$filter_i'))}] redirects: [ (redir.Redir op: <Redir_Great '>'> fd: 16777215 arg_word: {(events/block/) ($ VSub_DollarName '$b_start') (/filter)} ) ] ) ] negated: T ) (command.Pipeline children: [ (command.SimpleCommand words: [{(echo)} {(DQ ($ VSub_DollarName '$filter'))}] redirects: [ (redir.Redir op: <Redir_Great '>'> fd: 16777215 arg_word: {(events/block/block_rq_complete/filter)} ) ] ) ] negated: T ) ] ) ] action: [(C {(edie)} {(DQ ('ERROR: setting -d or -t filter. Exiting.'))})] ) ] ) ] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.AndOr ops: [Op_DPipe] children: [ (command.Pipeline children: [ (command.SimpleCommand words: [{(echo)} {(1)}] redirects: [ (redir.Redir op: <Redir_Great '>'> fd: 16777215 arg_word: {(events/block/) ($ VSub_DollarName '$b_start') (/enable)} ) ] ) ] negated: T ) (command.Pipeline children: [ (command.SimpleCommand words: [{(echo)} {(1)}] redirects: [ (redir.Redir op: <Redir_Great '>'> fd: 16777215 arg_word: {(events/block/block_rq_complete/enable)} ) ] ) ] negated: T ) ] ) terminator: <Op_Semi ';'> ) ] action: [(C {(edie)} {(DQ ('ERROR: enabling block I/O tracepoints. Exiting.'))})] ) ] ) (command.AndOr ops: [Op_DAmp] children: [ (command.DParen child:(arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_start>)) (C {(printf)} {(DQ ('%-15s '))} {(DQ (STARTs))}) ] ) (command.AndOr ops: [Op_DAmp] children: [ (command.DParen child:(arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_end>)) (C {(printf)} {(DQ ('%-15s '))} {(DQ (ENDs))}) ] ) (C {(printf)} {(DQ ('%-12.12s %-6s %-4s %-8s %-12s %-6s %8s') (Lit_Other '\\') (n))} {(DQ (COMM))} {(DQ (PID))} {(DQ (TYPE))} {(DQ (DEV))} {(DQ (BLOCK))} {(DQ (BYTES))} {(DQ (LATms))} ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:offset) op: Equal rhs: { (word_part.CommandSubPart command_list: (command.CommandList children: [ (C {($ VSub_DollarName '$awk')} { (SQ <'BEGIN { o = 0; }\n'> <'\t$1 == "#" && $2 ~ /TASK/ && NF == 6 { o = 1; }\n'> <'\t$2 ~ /TASK/ { print o; exit }'> ) } {(trace)} ) ] ) left_token: <Left_CommandSub '$('> ) } ) ] ) (C {(warn)} {(DQ ('echo > trace'))}) (command.Pipeline children: [ (command.Subshell command_list: (command.CommandList children: [ (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DParen child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_duration>) ) terminator: <Op_Semi ';'> ) ] action: [(C {(sleep)} {($ VSub_DollarName '$duration')}) (C {(cat)} {(trace)})] ) ] else_action: [(C {(cat)} {(trace_pipe)})] ) ] ) ) (C {($ VSub_DollarName '$awk')} {(-v)} {(Lit_VarLike 'o=') ($ VSub_DollarName '$offset')} {(-v)} {(Lit_VarLike 'opt_name=') ($ VSub_DollarName '$opt_name')} {(-v)} {(Lit_VarLike 'name=') ($ VSub_DollarName '$name')} {(-v)} {(Lit_VarLike 'opt_duration=') ($ VSub_DollarName '$opt_duration')} {(-v)} {(Lit_VarLike 'opt_start=') ($ VSub_DollarName '$opt_start')} {(-v)} {(Lit_VarLike 'opt_end=') ($ VSub_DollarName '$opt_end')} {(-v)} {(Lit_VarLike 'b_start=') ($ VSub_DollarName '$b_start')} { (SQ <'\n'> <'\t# common fields\n'> <'\t$1 != "#" {\n'> <'\t\t# task name can contain dashes\n'> <'\t\tcomm = pid = $1\n'> <'\t\tsub(/-[0-9][0-9]*/, "", comm)\n'> <'\t\tsub(/.*-/, "", pid)\n'> <'\t\ttime = $(3+o); sub(":", "", time)\n'> <'\t\tdev = $(5+o)\n'> <'\t}\n'> <'\n'> <'\t# block I/O request\n'> <'\t$1 != "#" && $0 ~ b_start {\n'> <'\t\tif (opt_name && match(comm, name) == 0)\n'> <'\t\t\tnext\n'> <'\t\t#\n'> <'\t\t# example: (fields1..4+o) 202,1 W 0 () 12862264 + 8 [tar]\n'> <'\t\t# The cmd field "()" might contain multiple words (hex),\n'> <'\t\t# hence stepping from the right (NF-3).\n'> <'\t\t#\n'> <'\t\tloc = $(NF-3)\n'> <'\t\tstarts[dev, loc] = time\n'> <'\t\tcomms[dev, loc] = comm\n'> <'\t\tpids[dev, loc] = pid\n'> <'\t\tnext\n'> <'\t}\n'> <'\n'> <'\t# block I/O completion\n'> <'\t$1 != "#" && $0 ~ /rq_complete/ {\n'> <'\t\t#\n'> <'\t\t# example: (fields1..4+o) 202,1 W () 12862256 + 8 [0]\n'> <'\t\t#\n'> <'\t\tdir = $(6+o)\n'> <'\t\tloc = $(NF-3)\n'> <'\t\tnsec = $(NF-1)\n'> <'\n'> <'\t\tif (starts[dev, loc] > 0) {\n'> <'\t\t\tlatency = sprintf("%.2f",\n'> <'\t\t\t 1000 * (time - starts[dev, loc]))\n'> <'\t\t\tcomm = comms[dev, loc]\n'> <'\t\t\tpid = pids[dev, loc]\n'> <'\n'> <'\t\t\tif (opt_start)\n'> <'\t\t\t\tprintf "%-15s ", starts[dev, loc]\n'> <'\t\t\tif (opt_end)\n'> <'\t\t\t\tprintf "%-15s ", time\n'> <'\t\t\tprintf "%-12.12s %-6s %-4s %-8s %-12s %-6s %8s\\n",\n'> <'\t\t\t comm, pid, dir, dev, loc, nsec * 512, latency\n'> <'\t\t\tif (!opt_duration)\n'> <'\t\t\t\tfflush()\n'> <'\n'> <'\t\t\tdelete starts[dev, loc]\n'> <'\t\t\tdelete comms[dev, loc]\n'> <'\t\t\tdelete pids[dev, loc]\n'> <'\t\t}\n'> <'\t\tnext\n'> <'\t}\n'> <'\n'> <'\t$0 ~ /LOST.*EVENTS/ { print "WARNING: " $0 > "/dev/stderr" }\n'> ) } ) ] negated: F ) (C {(end)}) ] )