perf subcmd: Create subcmd library

Move the subcommand-related files from perf to a new library named
libsubcmd.a.

Since we're moving files anyway, go ahead and rename 'exec_cmd.*' to
'exec-cmd.*' to be consistent with the naming of all the other files.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/c0a838d4c878ab17fee50998811612b2281355c1.1450193761.git.jpoimboe@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 0 insertions, 53 deletions

diff --git a/tools/perf/util/sigchain.c b/tools/perf/util/sigchain.c
deleted file mode 100644
index 3537c348a18e..000000000000
--- a/tools/perf/util/sigchain.c
+++ /dev/null
@@ -1,53 +0,0 @@
-#include <signal.h>
-#include "subcmd-util.h"
-#include "sigchain.h"
-
-#define SIGCHAIN_MAX_SIGNALS 32
-
-struct sigchain_signal {
-	sigchain_fun *old;
-	int n;
-	int alloc;
-};
-static struct sigchain_signal signals[SIGCHAIN_MAX_SIGNALS];
-
-static void check_signum(int sig)
-{
-	if (sig < 1 || sig >= SIGCHAIN_MAX_SIGNALS)
-		die("BUG: signal out of range: %d", sig);
-}
-
-static int sigchain_push(int sig, sigchain_fun f)
-{
-	struct sigchain_signal *s = signals + sig;
-	check_signum(sig);
-
-	ALLOC_GROW(s->old, s->n + 1, s->alloc);
-	s->old[s->n] = signal(sig, f);
-	if (s->old[s->n] == SIG_ERR)
-		return -1;
-	s->n++;
-	return 0;
-}
-
-int sigchain_pop(int sig)
-{
-	struct sigchain_signal *s = signals + sig;
-	check_signum(sig);
-	if (s->n < 1)
-		return 0;
-
-	if (signal(sig, s->old[s->n - 1]) == SIG_ERR)
-		return -1;
-	s->n--;
-	return 0;
-}
-
-void sigchain_push_common(sigchain_fun f)
-{
-	sigchain_push(SIGINT, f);
-	sigchain_push(SIGHUP, f);
-	sigchain_push(SIGTERM, f);
-	sigchain_push(SIGQUIT, f);
-	sigchain_push(SIGPIPE, f);
-}