1013 lines
33 KiB
Text
1013 lines
33 KiB
Text
# debug.nas -- debugging helpers
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#------------------------------------------------------------------------------
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#
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# debug.dump(<variable>) ... dumps contents of variable to terminal;
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# abbreviation for print(debug.string(v))
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#
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# debug.local([<frame:int>]) ... dump local variables of current
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# or given frame
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#
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# debug.backtrace([<comment:string>], [<dump:bool=1>], [<skip_level:int=0>]}
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# ... writes backtrace (similar to gdb's "bt full)
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# dump=0: only call stack
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# dump=1 (default): with local variables
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# skip_level: remove this many levels from
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# call stack
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#
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# debug.proptrace([<property [, <frames>]]) ... trace property write/add/remove
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# events under the <property> subtree for
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# a number of frames. Defaults are "/" and
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# 2 frames (of which the first one is incomplete).
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#
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# debug.tree([<property> [, <mode>]) ... dump property tree under property path
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# or props.Node hash (default: root). If
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# <mode> is unset or 0, use flat mode
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# (similar to props.dump()), otherwise
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# use space indentation
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#
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# debug.bt() ... abbreviation for debug.backtrace()
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#
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# debug.string(<variable>) ... returns contents of variable as string
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#
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# debug.attributes(<property> [, <verb>]) ... returns attribute string for a given property.
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# <verb>ose is by default 1, and suppressed the
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# node's refcounter if 0.
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#
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# debug.isnan() returns 1 if argument is an invalid number (NaN),
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# 0 if it's a valid number, and nil in all other cases
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#
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# debug.benchmark(<label:string>, <func> [, <repeat:int> [, <output:vector>]])
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# ... runs function <repeat> times (default: nil)
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# and prints total execution time in seconds,
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# prefixed with <label>, while adding results
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# to <output>, or returning the only result
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# if <repeat> is nil.
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#
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# debug.benchmark_time(<func> [, <repeat:int> [, <output:vector>]])
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# ... like debug.benchmark, but returns total
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# execution time and does not print anything.
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#
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# debug.rank(<list:vector> [, <repeat:int>])
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# ... sorts the list of functions based on execution
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# time over <repeat> samples (default: 1).
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#
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# debug.print_rank(<result:vector>, <names:int>)
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# ... prints the <result> of debug.rank with <names>
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# (which can be a vector of [name, func] or
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# [func, name], or a hash of name:func).
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#
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# debug.printerror(<err-vector>) ... prints error vector as set by call()
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#
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# debug.warn(<message>, <level>) ... generate debug message followed by caller stack trace
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# skipping <level> caller levels (default: 0).
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#
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# debug.propify(<variable>) ... turn about everything into a props.Node
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#
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# debug.Probe class ... base class to collect stats; details below
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# debug.Breakpoint class ... conditional backtrace; details below
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#
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# debug.addProbeToFunc(label, func) ... wraps a function with a probe
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# debug.findFunctions(ns, recursive=0) ... find all functions in a hash (namespace)
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#
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# debug.addProbesToNamespace(ns, label="", recursive=0)
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# ... combines findFunctions and addProbeToFunc
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#
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# CAVE: this file makes extensive use of ANSI color codes. These are
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# interpreted by UNIX shells and MS Windows with ANSI.SYS extension
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# installed. If the color codes aren't interpreted correctly, then
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# set property /sim/startup/terminal-ansi-colors=0
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#
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# ANSI color code wrappers (see $ man console_codes)
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#
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var _title = func(s, color=nil) globals.string.color("33;42;1", s, color); # backtrace header
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var _section = func(s, color=nil) globals.string.color("37;41;1", s, color); # backtrace frame
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var _error = func(s, color=nil) globals.string.color("31;1", s, color); # internal errors
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var _bench = func(s, color=nil) globals.string.color("37;45;1", s); # benchmark info
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var _nil = func(s, color=nil) globals.string.color("32", s, color); # nil
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var _string = func(s, color=nil) globals.string.color("31", s, color); # "foo"
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var _num = func(s, color=nil) globals.string.color("31", s, color); # 0.0
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var _bracket = func(s, color=nil) globals.string.color("", s, color); # [ ]
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var _brace = func(s, color=nil) globals.string.color("", s, color); # { }
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var _angle = func(s, color=nil) globals.string.color("", s, color); # < >
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var _vartype = func(s, color=nil) globals.string.color("33", s, color); # func ghost
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var _proptype = func(s, color=nil) globals.string.color("34", s, color); # BOOL INT LONG DOUBLE ...
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var _path = func(s, color=nil) globals.string.color("36", s, color); # /some/property/path
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var _internal = func(s, color=nil) globals.string.color("35", s, color); # me parents
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var _varname = func(s, color=nil) s; # variable_name
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##
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# Turn p into props.Node (if it isn't yet), or return nil.
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#
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var propify = func(p, create = 0) {
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if (isghost(p) and ghosttype(p) == "prop")
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return props.wrapNode(p);
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if (isscalar(p) and num(p) == nil)
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return props.globals.getNode(p, create);
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if (isa(p, props.Node))
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return p;
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return nil;
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}
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var tree = func(n = "", graph = 1) {
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n = propify(n);
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if (n == nil)
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return dump(n);
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_tree(n, graph);
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}
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var _tree = func(n, graph = 1, prefix = "", level = 0) {
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var path = n.getPath();
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var children = n.getChildren();
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var s = "";
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if (graph) {
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s = prefix ~ n.getName();
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var index = n.getIndex();
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if (index)
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s ~= "[" ~ index ~ "]";
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} else {
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s = n.getPath();
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}
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if (size(children)) {
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s ~= "/";
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if (n.getType() != "NONE")
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s ~= " = " ~ debug.string(n.getValue()) ~ " " ~ attributes(n)
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~ " " ~ _section(" PARENT-VALUE ");
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} else {
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s ~= " = " ~ debug.string(n.getValue()) ~ " " ~ attributes(n);
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}
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if ((var a = n.getAliasTarget()) != nil)
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s ~= " " ~ _title(" alias to ") ~ " " ~ a.getPath();
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print(s);
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if (n.getType() != "ALIAS")
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forindex (var i; children)
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_tree(children[i], graph, prefix ~ ". ", level + 1);
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}
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var attributes = func(p, verbose = 1, color=nil) {
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var r = p.getAttribute("readable") ? "" : "r";
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var w = p.getAttribute("writable") ? "" : "w";
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var R = p.getAttribute("trace-read") ? "R" : "";
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var W = p.getAttribute("trace-write") ? "W" : "";
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var A = p.getAttribute("archive") ? "A" : "";
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var U = p.getAttribute("userarchive") ? "U" : "";
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var P = p.getAttribute("preserve") ? "P" : "";
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var T = p.getAttribute("tied") ? "T" : "";
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var attr = r ~ w ~ R ~ W ~ A ~ U ~ P ~ T;
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var type = "(" ~ p.getType();
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if (size(attr))
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type ~= ", " ~ attr;
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if (var l = p.getAttribute("listeners"))
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type ~= ", L" ~ l;
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if (verbose and (var c = p.getAttribute("references")) > 2)
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type ~= ", #" ~ (c - 2);
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return _proptype(type ~ ")", color);
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}
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var _dump_prop = func(p, color=nil) {
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_path(p.getPath(), color) ~ " = " ~ debug.string(p.getValue(), color)
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~ " " ~ attributes(p, 1, color);
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}
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var _dump_var = func(v, color=nil) {
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if (v == "me" or v == "parents")
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return _internal(v, color);
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else
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return _varname(v, color);
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}
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var _dump_string = func(str, color=nil) {
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var s = "'";
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for (var i = 0; i < size(str); i += 1) {
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var c = str[i];
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if (c == `\``)
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s ~= "\\`";
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elsif (c == `\n`)
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s ~= "\\n";
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elsif (c == `\r`)
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s ~= "\\r";
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elsif (c == `\t`)
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s ~= "\\t";
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elsif (globals.string.isprint(c))
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s ~= chr(c);
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else
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s ~= sprintf("\\x%02x", c);
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}
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return _string(s ~ "'", color);
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}
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# dump hash keys as variables if they are valid variable names, or as string otherwise
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var _dump_key = func(s, color=nil) {
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if (num(s) != nil)
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return _num(s, color);
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if (!size(s))
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return _dump_string(s, color);
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if (!globals.string.isalpha(s[0]) and s[0] != `_`)
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return _dump_string(s, color);
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for (var i = 1; i < size(s); i += 1)
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if (!globals.string.isalnum(s[i]) and s[i] != `_`)
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return _dump_string(s, color);
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_dump_var(s, color);
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}
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var string = func(o, color=nil, ttl=5) {
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if (o == globals and ttl < 5) return "<globals>"; # do not loop int globals
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if (!ttl) return "<...>";
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var t = typeof(o);
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if (t == "nil") {
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return _nil("null", color);
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} elsif (isscalar(o)) {
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return num(o) == nil ? _dump_string(o, color) : _num(o~"", color);
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} elsif (isvec(o)) {
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var s = "";
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forindex (var i; o)
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s ~= (i == 0 ? "" : ", ") ~ debug.string(o[i], color, ttl - 1);
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return _bracket("[", color) ~ s ~ _bracket("]", color);
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} elsif (ishash(o)) {
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if (contains(o, "parents") and isvec(o.parents)
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and size(o.parents) == 1 and o.parents[0] == props.Node)
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return _angle("'<", color) ~ _dump_prop(o, color) ~ _angle(">'", color);
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var k = keys(o);
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var s = "";
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forindex (var i; k)
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s ~= (i == 0 ? "" : ", ") ~ _dump_key(k[i], color) ~ ": " ~ debug.string(o[k[i]], color, ttl - 1);
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return _brace("{", color) ~ " " ~ s ~ " " ~ _brace("}", color);
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} elsif (isghost(o)) {
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return _angle("'<", color) ~ _nil(ghosttype(o), color) ~ _angle(">'", color);
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} else {
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return _angle("'<", color) ~ _vartype(t, color) ~ _angle(">'", color);
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}
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}
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var dump = func(vars...) {
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if (!size(vars))
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return local(1);
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if (size(vars) == 1)
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return print(debug.string(vars[0]));
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forindex (var i; vars)
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print(globals.string.color("33;40;1", "#" ~ i) ~ " ", debug.string(vars[i]));
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}
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var local = func(frame = 0) {
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var v = caller(frame + 1);
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print(v == nil ? _error("<no such frame>") : debug.string(v[0]));
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return v;
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}
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# According to the Nasal design doc funtions do not have unique internal names.
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# Nevertheless you can sometimes find a matching symbol, so funcname may help to
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# make debug output more helpful, but unfortunately you cannot rely on it.
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var funcname = func(f) {
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if (!isfunc(f)) return "";
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var namespace = closure(f);
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foreach (var k; keys(namespace)) {
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if (isfunc(namespace[k])) {
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if (namespace[k] == f)
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return k;
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}
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}
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return "-unknown-";
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}
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var backtrace = func(desc = nil, dump_vars = 1, skip_level = 0) {
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var d = (desc == nil) ? "" : " '" ~ desc ~ "'";
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print("");
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print(_title("### backtrace" ~ d ~ " ###"));
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skip_level += 1;
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for (var i = skip_level; 1; i += 1) {
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if ((var v = caller(i)) == nil) return caller(i - 1);
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var filename = v[2];
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var line = v[3];
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if (size(filename) > 50)
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filename = substr(filename, 0, 5)~"[...]"~substr(filename, -40);
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print(_section(sprintf("#%-2d called from %s:%d (%s) (locals %s):",
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i - skip_level, filename, line, funcname(v[1]), id(v[0]))));
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if (dump_vars) dump(v[0]);
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}
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}
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var bt = backtrace;
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var proptrace = func(root = "/", frames = 2) {
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var events = 0;
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var trace = setlistener(propify(root), func(this, base, type) {
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events += 1;
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if (type > 0)
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print(_nil("ADD "), this.getPath());
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elsif (type < 0)
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print(_num("DEL "), this.getPath());
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else
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print("SET ", this.getPath(), " = ", debug.string(this.getValue()), " ", attributes(this));
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}, 0, 2);
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var mark = setlistener("/sim/signals/frame", func {
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print("-------------------- FRAME --------------------");
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if (!frames) {
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removelistener(trace);
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removelistener(mark);
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print("proptrace: stop (", events, " calls)");
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}
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frames -= 1;
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});
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}
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##
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# Executes function fn "repeat" times and prints execution time in seconds. If repeat
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# is an integer and an optional "output" argument is specified, each test's result
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# is appended to that vector, then the vector is returned. If repeat is nil, then
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# the function is run once and the result returned. Otherwise, the result is discarded.
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# Examples:
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#
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# var test = func { getprop("/sim/aircraft"); }
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# debug.benchmark("test()/1", test, 1000);
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# debug.benchmark("test()/2", func setprop("/sim/aircraft", ""), 1000);
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#
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# var results = debug.benchmark("test()", test, 1000, []);
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# print(" Results were:");
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# print(" ", debug.string(results));
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#
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var benchmark = func(label, fn, repeat = nil, output=nil) {
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var start = var end = nil;
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if (repeat == nil) {
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start = systime();
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output = fn();
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} elsif (isvec(output)) {
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start = systime();
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for (var i = 0; i < repeat; i += 1)
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append(output, fn());
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} else {
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start = systime();
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for (var i = 0; i < repeat; i += 1)
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fn();
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}
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end = systime();
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print(_bench(sprintf(" %s --> %.6f s ", label, end - start)));
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return output;
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}
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var benchmark_time = func(fn, repeat = 1, output = nil) {
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var start = var end = nil;
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if (repeat == nil) {
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start = systime();
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output = fn();
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} elsif (isvec(output)) {
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start = systime();
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for (var i = 0; i < repeat; i += 1)
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append(output, fn());
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} else {
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start = systime();
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for (var i = 0; i < repeat; i += 1)
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fn();
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}
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end = systime();
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return end - start;
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}
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##
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# Executes each function in the list and returns a sorted vector with the fastest
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# on top (i.e. first). Each position in the result is a vector of [func, time].
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#
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var rank = func(list, repeat = nil) {
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var result = [];
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foreach (var fn; list) {
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var time = benchmark_time(fn, repeat);
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append(result, [fn, time]);
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}
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return sort(result, func(a,b) a[1] < b[1] ? -1 : a[1] > b[1] ? 1 : 0);
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}
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var print_rank = func(label, list, names) {
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print("Test results for "~label);
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var first = 1;
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var longest = list[-1][1];
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foreach (var item; list) {
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var (fn, time) = item;
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var name = nil;
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if (isvec(names)) {
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foreach (var l; names) {
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if (l[1] == fn) {
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name = l[0]; break;
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} elsif (l[0] == fn) {
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name = l[1]; break;
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}
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}
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} else {
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foreach (var name; keys(names)) {
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if (names[name] == fn) break;
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else name = nil;
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}
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}
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if (name == nil) die("function not found");
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print(" "~name~(first?" (fastest)":"")~" took "~(time*1000)~" ms ("~(time/longest*100)~"%) time");
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first = 0;
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}
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return list;
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}
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##
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# print error vector as set by call(). By using call() one can execute
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# code that catches "exceptions" (by a die() call or errors). The Nasal
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# code doesn't abort in this case. Example:
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#
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# var possibly_buggy = func { ... }
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# call(possibly_buggy, nil, var err = []);
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# debug.printerror(err);
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#
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var printerror = func(err) {
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if (!size(err))
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return;
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printf("%s:\n at %s, line %d", err[0], err[1], err[2]);
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for (var i = 3; i < size(err); i += 2)
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printf(" called from: %s, line %d", err[i], err[i + 1]);
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}
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# like die(), but code execution continues. The level argument defines
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# how many caller() levels to omit. One is automatically omitted, as
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# this would only point to debug.warn(), where the event in question
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# didn't happen.
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#
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var warn = func(msg, level = 0) {
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var c = caller(level += 1);
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if (c == nil)
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die("debug.warn with invalid level argument");
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printf("%s:\n at %s, line %d", msg, c[2], c[3]);
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while ((c = caller(level += 1)) != nil)
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printf(" called from: %s, line %d", c[2], c[3]);
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}
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var isnan = func {
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call(math.sin, arg, var err = []);
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return !!size(err);
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}
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# Probe class - collect statistics; controlled via property tree
|
|
# Data can be viewed / modified in the prop tree /_debug/nas/probe/<myLabel>/*
|
|
# ./enable bool,
|
|
# ./reset bool, reset hit counters to 0 and _start_time to now
|
|
# ./hits[i] number of hits, by default i=0 -> hits
|
|
# secondary counters can be added under the same path
|
|
# with addCounter()
|
|
# ./time after generateStats() show how long the probe was enabled
|
|
# ./hps after generateStats() show avg. hits/second
|
|
# ./hitratio after generateStats() if two counters: hits[1]/hits[0]
|
|
#
|
|
# == Example ==
|
|
# var myProbe = debug.Probe.new("myLabel").enable();
|
|
# var cnt2 = myProbe.addCounter(); # create a 2nd counter
|
|
#
|
|
# #at the place of interest (e.g. in some loop or class method) insert:
|
|
# myProbe.hit(); # count how often this place in the code is hit
|
|
# if (condition)
|
|
# myProbe.hit(cnt2); # count how often condition is true
|
|
#
|
|
# print(myProbe.getHits());
|
|
# print(myProbe.getHits(cnt2)/myProbe.getHits()); # print hit ratio
|
|
#
|
|
var Probe = {
|
|
_instances: {},
|
|
|
|
_uid: func(label, class) {
|
|
class = globals.string.replace(class, " ", "_");
|
|
label = globals.string.replace(label, " ", "_");
|
|
label = globals.string.replace(label, "/", "_");
|
|
label = globals.string.replace(label, "\\", "_");
|
|
return class~"-"~label;
|
|
},
|
|
|
|
# label: Used in property path
|
|
# prefix: Optional
|
|
new: func(label, class = "probe") {
|
|
if (!isscalar(label) or !isscalar(class)) {
|
|
die("Invalid argument type to Probe.new");
|
|
}
|
|
var uid = me._uid(label,class);
|
|
if (Probe._instances[uid] != nil) return Probe._instances[uid];
|
|
|
|
var obj = {
|
|
parents: [Probe],
|
|
uid: uid,
|
|
label: label,
|
|
hits: [0],
|
|
node: nil,
|
|
_enableN: nil,
|
|
_resetN: nil,
|
|
_hitsN: [],
|
|
_start_time: 0,
|
|
_stop_time: 0,
|
|
_timeoutN: nil, # > 0, disable probe after _timeout seconds
|
|
_L: [],
|
|
};
|
|
|
|
obj.node = props.globals.getNode("/_debug/nas/"~class~"/"~label, 1);
|
|
obj.node.removeChildren();
|
|
obj._enableN = obj.node.addChild("enable");
|
|
obj._enableN.setBoolValue(0);
|
|
append(obj._L,
|
|
setlistener(obj._enableN, func(n) {
|
|
if (n.getValue()) obj.enable();
|
|
else obj.disable();
|
|
}, 0, 0)
|
|
);
|
|
|
|
obj._resetN = obj.node.addChild("reset");
|
|
obj._resetN.setBoolValue(0);
|
|
append(obj._L,
|
|
setlistener(obj._resetN, func(n) {
|
|
if (n.getValue()) {
|
|
obj.reset();
|
|
n.setValue(0);
|
|
}
|
|
}, 0, 0)
|
|
);
|
|
|
|
append(obj._hitsN, obj.node.addChild("hits"));
|
|
obj._hitsN[0].setIntValue(0);
|
|
# for live monitoring via prop browser, alias all hit counters in one place
|
|
props.globals.getNode("/_debug/nas/_stats/"~obj.uid, 1)
|
|
.alias(obj._hitsN[0]);
|
|
Probe._instances[obj.uid] = obj;
|
|
return obj;
|
|
},
|
|
|
|
del: func () {
|
|
foreach (var l; me._L) {
|
|
removelistener(l);
|
|
}
|
|
me.node.remove();
|
|
Probe._instances[me.uid] = nil;
|
|
},
|
|
|
|
reset: func {
|
|
forindex (var i; me.hits) {
|
|
me.hits[i] = 0;
|
|
me._hitsN[i].setValue(0);
|
|
}
|
|
me._start_time = systime();
|
|
},
|
|
|
|
# set timeout, next hit() after timeout will disable()
|
|
setTimeout: func(seconds) {
|
|
if (!isa(me._timeoutN, props.Node))
|
|
me._timeoutN = me.node.getNode("timeout", 1);
|
|
me._timeoutN.setValue(num(seconds) or 0);
|
|
return me;
|
|
},
|
|
|
|
#enable counting
|
|
enable: func {
|
|
me._enableN.setValue(1);
|
|
me._start_time = systime();
|
|
return me;
|
|
},
|
|
|
|
#disable counting, write time and hit/s to property tree
|
|
disable: func {
|
|
me._enableN.setValue(0);
|
|
me._stop_time = systime();
|
|
me.generateStats();
|
|
return me;
|
|
},
|
|
|
|
generateStats: func {
|
|
if (me._start_time) {
|
|
if (me._enableN.getValue())
|
|
me._stop_time = systime();
|
|
var dt = me._stop_time - me._start_time;
|
|
me.node.getNode("time", 1).setValue(dt);
|
|
me.node.getNode("hps", 1).setValue(me.hits[0] / dt );
|
|
if (size(me.hits) == 2)
|
|
me.node.getNode("hitratio",1).setValue(me.hits[1] / me.hits[0] or 1);
|
|
}
|
|
},
|
|
|
|
getHits: func(counter_id = 0) {
|
|
return me.hits[counter_id];
|
|
},
|
|
|
|
# add secondary counter(s)
|
|
# returns counter id
|
|
addCounter: func {
|
|
append(me._hitsN, me.node.addChild("hits"));
|
|
append(me.hits, 0);
|
|
return size(me._hitsN) - 1;
|
|
},
|
|
|
|
# increment counter (if enabled)
|
|
# use addCounter() before using counter_id > 0
|
|
hit: func(counter_id = 0, callback = nil) {
|
|
if (me._enableN.getValue()) {
|
|
if (counter_id >= size(me._hitsN)) {
|
|
print("debug.Probe.hit(): Invalid counter_id");
|
|
me.disable();
|
|
return nil;
|
|
}
|
|
if (isa(me._timeoutN, props.Node)) {
|
|
var timeout = me._timeoutN.getValue();
|
|
if (timeout and systime() - me._start_time > timeout) {
|
|
return me.disable();
|
|
}
|
|
}
|
|
me.hits[counter_id] += 1;
|
|
me._hitsN[counter_id].increment();
|
|
if (isfunc(callback)) {
|
|
callback(me.hits);
|
|
}
|
|
}
|
|
return me;
|
|
},
|
|
};
|
|
|
|
# Breakpoint (BP) - do conditional backtrace (BT) controlled via property tree
|
|
# * count how often the BP was hit
|
|
# * do only a limited number of BT, avoid flooding the log / console
|
|
#
|
|
# Data can be viewed / modified in the prop tree /_debug/nas/bp/<myLabel>/*
|
|
# * tokens: number of backtraces to do; each hit will decrement this by 1
|
|
# * hits: total number of hits
|
|
#
|
|
# == Example ==
|
|
# var myBP = debug.Breakpoint.new("myLabel", 0);
|
|
# myBP.enable(4); # allow 4 hits, then be quiet
|
|
#
|
|
# #at the place of interest (e.g. in some loop or class method) insert:
|
|
# myBP.hit(); # do backtrace here if tokens > 0, reduce tokens by 1
|
|
# myBP.hit(myFunction); # same but call myFunction instead of backtrace
|
|
#
|
|
# print(myBP.getHits()); # print total number of hits
|
|
#
|
|
var Breakpoint = {
|
|
|
|
# label: Used in property path and as text for backtrace.
|
|
# dump_locals: bool passed to backtrace. Dump variables in BT.
|
|
# skip_level: int passed to backtrace.
|
|
new: func(label, dump_locals = 0, skip_level=0) {
|
|
var obj = {
|
|
parents: [Breakpoint, Probe.new(label, "bp")],
|
|
tokens: 0,
|
|
skip_level: num(skip_level+1), # +1 for Breakpoint.hit()
|
|
dump_locals: num(dump_locals),
|
|
};
|
|
obj._enableN.remove();
|
|
obj._enableN = obj.node.getNode("tokens", 1);
|
|
obj._enableN.setIntValue(0);
|
|
|
|
return obj;
|
|
},
|
|
|
|
# enable BP and set hit limit;
|
|
# tokens: int > 0; default: 1 (single shot); 0 allowed (=disable);
|
|
enable: func(tokens = 1) {
|
|
if (num(tokens) == nil) tokens = 1;
|
|
if (tokens < 0) tokens = 0;
|
|
me.tokens = tokens;
|
|
me._enableN.setIntValue(tokens);
|
|
return me;
|
|
},
|
|
|
|
# hit the breakpoint, e.g. do backtrace if we have tokens available
|
|
hit: func(callback = nil) {
|
|
me.hits[0] += 1;
|
|
me._hitsN[0].increment();
|
|
me.tokens = me._enableN.getValue() or 0;
|
|
if (me.tokens > 0) {
|
|
me.tokens -= 1;
|
|
if (isfunc(callback)) {
|
|
callback(me.hits[0], me.tokens);
|
|
}
|
|
else {
|
|
debug.backtrace(me.label, me.dump_locals, me.skip_level);
|
|
}
|
|
me._enableN.setValue(me.tokens);
|
|
}
|
|
return me;
|
|
},
|
|
|
|
};
|
|
|
|
# Tracer - perform conditional backtraces / statistics controlled via property tree
|
|
# * backtraces are written to property tree
|
|
# * do only a limited number of BT, avoid flooding the log / console
|
|
# * trace statistics can be dumped to XML file
|
|
#
|
|
# Data can be viewed / modified in the prop tree /_debug/nas/trc/<myLabel>/*
|
|
# * tokens: number of backtraces to do; each hit will decrement this by 1
|
|
# * hits: total number of hits
|
|
#
|
|
# == Example ==
|
|
# var myBP = debug.Tracer.new("myLabel", 0);
|
|
# myBP.enable(4); # allow 4 hits, then be quiet
|
|
#
|
|
# #at the place of interest (e.g. in some loop or class method) insert:
|
|
# myBP.hit(); # do backtrace here if tokens > 0, reduce tokens by 1
|
|
# myBP.hit(myFunction); # same but call myFunction instead of backtrace
|
|
#
|
|
# print(myBP.getHits()); # print total number of hits
|
|
#
|
|
var Tracer = {
|
|
|
|
# label: Used in property path and as text for backtrace.
|
|
# dump_locals: bool passed to backtrace. Dump variables in BT.
|
|
# skip_level: int passed to backtrace.
|
|
new: func(label, dump_locals = 0, skip_level=0) {
|
|
var obj = {
|
|
parents: [Tracer, Probe.new(label, "trc")],
|
|
tokens: 0,
|
|
skip_level: num(skip_level+1), # +1 for Tracer.hit()
|
|
dump_locals: num(dump_locals),
|
|
};
|
|
obj._enableN.remove();
|
|
obj._enableN = obj.node.getNode("tokens", 1);
|
|
obj._enableN.setIntValue(0);
|
|
|
|
obj._dumpN = obj.node.addChild("dump-trace");
|
|
obj._dumpN.setBoolValue(0);
|
|
append(obj._L,
|
|
setlistener(obj._dumpN, func(n) {
|
|
if (n.getValue() == 1) obj.dumpTrace();
|
|
n.setBoolValue(0);
|
|
}, 0, 0)
|
|
);
|
|
|
|
obj._resetTraceN = obj.node.addChild("reset-trace");
|
|
obj._resetTraceN.setBoolValue(0);
|
|
append(obj._L,
|
|
setlistener(obj._resetTraceN, func(n) {
|
|
if (n.getValue() == 1) obj.resetTrace();
|
|
n.setBoolValue(0);
|
|
}, 0, 0)
|
|
);
|
|
return obj;
|
|
},
|
|
|
|
# enable BP and set hit limit;
|
|
# tokens: int > 0; default: 1 (single shot); 0 allowed (=disable);
|
|
enable: func(tokens = 1) {
|
|
if (num(tokens) == nil) tokens = 1;
|
|
if (tokens < 0) tokens = 0;
|
|
me.tokens = tokens;
|
|
me._enableN.setIntValue(tokens);
|
|
return me;
|
|
},
|
|
|
|
disableTracing: func() {
|
|
me._enableN.setIntValue(0);
|
|
return me;
|
|
},
|
|
|
|
resetTrace: func () {
|
|
me.node.getNode("trace",1).remove();
|
|
},
|
|
|
|
|
|
hit: func(callback = nil) {
|
|
me.hits[0] += 1;
|
|
me._hitsN[0].increment();
|
|
me.tokens = me._enableN.getValue() or 0;
|
|
if (me.tokens > 0) {
|
|
me.tokens -= 1;
|
|
if (isfunc(callback)) {
|
|
callback(me.hits[0], me.tokens);
|
|
}
|
|
me._enableN.setValue(me.tokens);
|
|
me._trace(1);
|
|
}
|
|
return me;
|
|
},
|
|
|
|
#write backtrace to prop tree with counters
|
|
_trace: func(skip=0) {
|
|
var flat_mode = 0;
|
|
if (!me._enableN.getValue()) return;
|
|
me._enableN.decrement();
|
|
var tn = me.node.getNode("trace",1);
|
|
for (var i = skip + 1; 1; i += 1) {
|
|
var c = caller(i);
|
|
if (c == nil) break;
|
|
var fn = io.basename(c[2]);
|
|
#invalid chars are : [ ] < > =
|
|
fn = globals.string.replace(fn,":","_");
|
|
fn = globals.string.replace(fn,"#","_");
|
|
fn = globals.string.replace(fn,"<","_");
|
|
fn = globals.string.replace(fn,">","_");
|
|
if (!fn) fn = "_unknown_";
|
|
var line = num(c[3]);
|
|
var sid = fn~":"~line;
|
|
if (flat_mode) {
|
|
if (tn.getChild(fn,line) == nil) {
|
|
tn.getChild(fn,line,1).setIntValue(1);
|
|
}
|
|
else {
|
|
tn.getChild(fn,line).increment();
|
|
}
|
|
}
|
|
else {
|
|
tn = tn.getChild(fn,line,1);
|
|
if (tn.getNode("hits") == nil) {
|
|
tn.getNode("hits",1).setIntValue(1);
|
|
}
|
|
else {
|
|
tn.getNode("hits").increment();
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
dumpTrace: func (path = nil) {
|
|
#props.dump(me.node.getNode("trace",1));
|
|
if (path == nil) {
|
|
path = getprop("/sim/fg-home")~"/Export/dumpTrace-"~me.uid~".xml";
|
|
}
|
|
me.node.getNode("dump-result", 1).setValue(
|
|
io.write_properties(path, me.node.getNode("trace",1))
|
|
);
|
|
},
|
|
}; #Tracer
|
|
|
|
|
|
# addProbeToFunc - wrap a function with a debug probe
|
|
# f: function to wrap with a debug probe (hit counter)
|
|
# label: description, passed to probe
|
|
#
|
|
# WARNING: call() currently breaks the call stack which affects backtrace and
|
|
# the use of caller(i>0). Do not use addProbeToFunc on functions which rely on
|
|
# caller (which is probably bad coding style, but allowed).
|
|
#
|
|
var addProbeToFunc = func (f, label) {
|
|
if (!isfunc(f)) {
|
|
logprint(DEV_ALERT, "wrapFunc() error: argument is not a function.");
|
|
return nil;
|
|
}
|
|
if (!isstr(label)) {
|
|
logprint(DEV_ALERT, "wrapFunc() error: argument is not a string.");
|
|
return nil;
|
|
}
|
|
var __probe = Probe.new(label).enable();
|
|
var wrapped = func() {
|
|
__probe.hit();
|
|
return call(f, arg, me, );
|
|
}
|
|
return wrapped;
|
|
}
|
|
|
|
# addTracerToFunc - wrap a function with a debug breakpoint for tracing
|
|
# f: function to wrap with a tracer
|
|
# label: description, passed to breakpoint
|
|
#
|
|
# WARNING: call() currently breaks the call stack which affects backtrace and
|
|
# the use of caller(i>0). Do not use addTracerToFunc on functions which rely on
|
|
# caller (which is probably bad coding style, but allowed).
|
|
#
|
|
var addTracerToFunc = func (f, label) {
|
|
if (!isfunc(f)) {
|
|
logprint(DEV_ALERT, "wrapFunc() error: argument is not a function.");
|
|
return nil;
|
|
}
|
|
if (!isstr(label)) {
|
|
logprint(DEV_ALERT, "wrapFunc() error: argument is not a string.");
|
|
return nil;
|
|
}
|
|
var __trc = Tracer.new(label).enable();
|
|
var wrapped = func() {
|
|
__trc.hit();
|
|
return call(f, arg, me, );
|
|
}
|
|
return wrapped;
|
|
}
|
|
|
|
# scan a hash for function references
|
|
# ns: the hash to be searched
|
|
# recursive: if you want to search sub hashes (e.g. classes), set this to 1
|
|
var findFunctions = func (ns, recursive = 0) {
|
|
var functions = {};
|
|
foreach (var key; keys(ns)) {
|
|
if (recursive and ishash(ns[key]) and id(ns) != id(ns[key])) {
|
|
print(key);
|
|
var f = findFunctions(ns[key]);
|
|
foreach (var k; keys(f)) {
|
|
functions[key~"."~k] = f[k];
|
|
}
|
|
}
|
|
if (isfunc(ns[key])) {
|
|
functions[key] = ns[key];
|
|
}
|
|
}
|
|
return functions;
|
|
}
|
|
|
|
# add probes to all functions in a namespace for finding hotspots
|
|
# use property browser at runtime to check /_debug/nas/_stats/
|
|
# ns: hash
|
|
# label: description, passed to probe
|
|
|
|
var _probed_ns = {};
|
|
var addProbesToNamespace = func (ns, label = "") {
|
|
var nsid = id(ns);
|
|
if (_probed_ns[nsid] != nil) return;
|
|
else _probed_ns[nsid] = {};
|
|
|
|
var funcs = findFunctions(ns, 0);
|
|
foreach (var key; keys(funcs)) {
|
|
_probed_ns[nsid][key] = funcs[key];
|
|
ns[key] = addProbeToFunc(funcs[key], label~"-"~key);
|
|
}
|
|
}
|
|
|
|
var removeProbesFromNamespace = func (ns) {
|
|
var nsid = id(ns);
|
|
if (_probed_ns[nsid] == nil) {
|
|
logprint(DEV_ALERT, "removeProbesFromNamespace: namespace not found");
|
|
return;
|
|
}
|
|
|
|
foreach (var key; keys(_probed_ns[nsid])) {
|
|
ns[key] = _probed_ns[nsid][key];
|
|
}
|
|
_probed_ns[nsid] = nil;
|
|
}
|
|
|
|
# dump a sorted list of hit counters to console
|
|
var dumpProbeStats = func () {
|
|
var nodes = props.getNode("/_debug/nas/_stats/", 1).getChildren();
|
|
var data = [];
|
|
foreach (var n; nodes) {
|
|
append(data, {name: n.getName(), value: n.getValue()});
|
|
}
|
|
var mysort = func(a,b) {
|
|
if (a.value > b.value) return -1;
|
|
elsif (a.value == b.value) return 0;
|
|
else return 1;
|
|
}
|
|
|
|
foreach (var probe; sort(data, mysort)) {
|
|
print(probe.name," ",probe.value);
|
|
}
|
|
return;
|
|
}
|
|
|
|
#-- Init -----------------------------------------------------------------------
|
|
# General purpose breakpoint for the lazy ones.
|
|
var bp = Breakpoint.new("default", 0);
|
|
|
|
var dumpN = props.getNode("/_debug/nas/_dumpstats", 1);
|
|
dumpN.setBoolValue(0);
|
|
setlistener(dumpN, func(n) {
|
|
n.setBoolValue(0);
|
|
debug.dumpProbeStats();
|
|
}, 0, 0);
|
|
|
|
# --prop:debug=1 enables debug mode with additional warnings
|
|
#
|
|
|
|
if (getprop("debug")) {
|
|
var writewarn = func(f, p, r) {
|
|
if (!r) {
|
|
var hint = "";
|
|
if ((var n = props.globals.getNode(p)) != nil) {
|
|
if (!n.getAttribute("writable"))
|
|
hint = " (write protected)";
|
|
elsif (n.getAttribute("tied"))
|
|
hint = " (tied)";
|
|
}
|
|
warn("Warning: " ~ f ~ " -> writing to " ~ p ~ " failed" ~ hint, 2);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
setprop = (func { var _ = setprop; func writewarn("setprop",
|
|
globals.string.join("", arg[:-2]), call(_, arg)) })();
|
|
props.Node.setDoubleValue = func writewarn("setDoubleValue", me.getPath(),
|
|
props._setDoubleValue(me._g, arg));
|
|
props.Node.setBoolValue = func writewarn("setBoolValue", me.getPath(),
|
|
props._setBoolValue(me._g, arg));
|
|
props.Node.setIntValue = func writewarn("setIntValue", me.getPath(),
|
|
props._setIntValue(me._g, arg));
|
|
props.Node.setValue = func writewarn("setValue", me.getPath(),
|
|
props._setValue(me._g, arg));
|
|
}
|