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| author |   Frederic Weisbecker <fweisbec@gmail.com> | 2009-07-02 17:58:20 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-07-02 20:47:14 +0200 |
| commit | 5a4b181721375700124513cdd9f97056e1c66675 (patch) | |
| tree | 3486fa932ba02e749fb2884aea5cc362fa640a45 /tools/perf/util/parse-options.c | |
| parent | perf_counter tools: Create new chain_for_each_child() iterator (diff) | |
| download | linux-dev-5a4b181721375700124513cdd9f97056e1c66675.tar.xz linux-dev-5a4b181721375700124513cdd9f97056e1c66675.zip | |
perf_counter tools: Add new OPT_CALLBACK_DEFAULT option
There is no predefined macro to create an option that can have
a custom value or a default one if none is given.
This patch provides a new helper OPT_CALLBACK_DEFAULT() which
defines such kind of option.
For example, considering an option -c, we want to get the
default value in the following cases:
perf command -c -d
perf command -d -c
And the foo value when it's given:
perf command -c foo -d
perf command -d -c foo
That's also why PARSE_OPT_LASTARG_DEFAULT is extended here to
support default values whatever the position of the option, not
only in the end.
Should it now be renamed to PARSE_OPT_ARG_DEFAULT ?
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: git@vger.kernel.org
LKML-Reference: <1246550301-8954-2-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/parse-options.c')
| -rw-r--r-- | tools/perf/util/parse-options.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c index 9a897b7cce79..1bf67190c820 100644 --- a/tools/perf/util/parse-options.c +++ b/tools/perf/util/parse-options.c @@ -20,7 +20,8 @@ static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt, if (p->opt) { *arg = p->opt; p->opt = NULL; - } else if (p->argc == 1 && (opt->flags & PARSE_OPT_LASTARG_DEFAULT)) { + } else if ((opt->flags & PARSE_OPT_LASTARG_DEFAULT) && (p->argc == 1 || + **(p->argv + 1) == '-')) { *arg = (const char *)opt->defval; } else if (p->argc > 1) { p->argc--; |