Messages in this thread Patch in this message | | | Date | Tue, 18 Mar 2014 17:09:33 +0100 | From | Adrien BAK <> | Subject | [PATCH] perf-script : improves option passing mechansim |
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This pull request fixes the following issues : * when passing custom arguments to a script, if those arguments are not declared within perf, they prevent the execution of perf. e.g.
perf script -i path/to/perf.data -s my_script -arg1 arg_value
perf will issue an error message and no processing will occur
* when passing custom arguments to a script, if those arguments are declared by perf, they are consumed and not passed to the script. e.g. perf script -i path/to/perf.data -s my_script -h
perf will display its own help message, instead of the expected help message from my_script.
These issues are addressed as follows : * The parse option flag is changed from PARSE_OPT_STOP_AT_NON_OPTION to PARSE_OPT_KEEP_UNKNOWN * A new option type is introduce OPT_CALLBACK_FINAL_OPTION, which effectively prevents the parsing of all options located after the script.
Signed-off-by: Adrien Bak <adrien.bak@metascale.org>
---
tools/perf/builtin-script.c | 8 ++++---- tools/perf/util/parse-options.c | 4 ++++ tools/perf/util/parse-options.h | 5 +++++ 3 files changed, 13 insertions(+), 4 deletions(-)
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 9e9c91f..3cd6a46 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1523,9 +1523,9 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) "show latency attributes (irqs/preemption disabled, etc)"), OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts", list_available_scripts), - OPT_CALLBACK('s', "script", NULL, "name", - "script file name (lang:script name, script name, or *)", - parse_scriptname), + OPT_CALLBACK_FINAL_OPTION('s', "script", NULL, "name", + "script file name (lang:script name, script name, or *)", + parse_scriptname), OPT_STRING('g', "gen-script", &generate_script_lang, "lang", "generate perf-script.xx script in specified language"), OPT_STRING('i', "input", &input_name, "file", "input file name"), @@ -1578,7 +1578,7 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) setup_scripting();
argc = parse_options(argc, argv, options, script_usage, - PARSE_OPT_STOP_AT_NON_OPTION); + PARSE_OPT_KEEP_UNKNOWN);
file.path = input_name;
diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c index d22e3f8..77f566d 100644 --- a/tools/perf/util/parse-options.c +++ b/tools/perf/util/parse-options.c @@ -112,6 +112,8 @@ static int get_value(struct parse_opt_ctx_t *p, return (*opt->callback)(opt, NULL, 0) ? (-1) : 0; if (get_arg(p, opt, flags, &arg)) return -1; + if (opt->flags & PARSE_OPT_FINAL_OPTION) + return (*opt->callback)(opt, arg, 0)?(-1) : (-3); return (*opt->callback)(opt, arg, 0) ? (-1) : 0;
case OPTION_INTEGER: @@ -366,6 +368,8 @@ int parse_options_step(struct parse_opt_ctx_t *ctx, return parse_options_usage(usagestr, options, arg + 1, 1); case -2: goto unknown; + case -3: + return PARSE_OPT_DONE; default: break; } diff --git a/tools/perf/util/parse-options.h b/tools/perf/util/parse-options.h index cbf0149..b1fa6b6 100644 --- a/tools/perf/util/parse-options.h +++ b/tools/perf/util/parse-options.h @@ -38,6 +38,7 @@ enum parse_opt_option_flags { PARSE_OPT_NONEG = 4, PARSE_OPT_HIDDEN = 8, PARSE_OPT_LASTARG_DEFAULT = 16, + PARSE_OPT_FINAL_OPTION = 32, };
struct option; @@ -123,6 +124,10 @@ struct option { { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), .argh = "time", .help = (h), .callback = parse_opt_approxidate_cb } #define OPT_CALLBACK(s, l, v, a, h, f) \ { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f) } +#define OPT_CALLBACK_FINAL_OPTION(s, l, v, a, h, f) \ + { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l),\ + .value = (v), (a), .help = (h), .callback = (f),\ + .flags = PARSE_OPT_FINAL_OPTION} #define OPT_CALLBACK_NOOPT(s, l, v, a, h, f) \ { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f), .flags = PARSE_OPT_NOARG } #define OPT_CALLBACK_DEFAULT(s, l, v, a, h, f, d) \
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