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, 100 deletions

diff --git a/tools/perf/util/pager.c b/tools/perf/util/pager.c
deleted file mode 100644
index d50f3b58606b..000000000000
--- a/tools/perf/util/pager.c
+++ /dev/null
@@ -1,100 +0,0 @@
-#include <sys/select.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <signal.h>
-#include "pager.h"
-#include "run-command.h"
-#include "sigchain.h"
-#include "subcmd-config.h"
-
-/*
- * This is split up from the rest of git so that we can do
- * something different on Windows.
- */
-
-static int spawned_pager;
-
-void pager_init(const char *pager_env)
-{
-	subcmd_config.pager_env = pager_env;
-}
-
-static void pager_preexec(void)
-{
-	/*
-	 * Work around bug in "less" by not starting it until we
-	 * have real input
-	 */
-	fd_set in;
-
-	FD_ZERO(&in);
-	FD_SET(0, &in);
-	select(1, &in, NULL, &in, NULL);
-
-	setenv("LESS", "FRSX", 0);
-}
-
-static const char *pager_argv[] = { "sh", "-c", NULL, NULL };
-static struct child_process pager_process;
-
-static void wait_for_pager(void)
-{
-	fflush(stdout);
-	fflush(stderr);
-	/* signal EOF to pager */
-	close(1);
-	close(2);
-	finish_command(&pager_process);
-}
-
-static void wait_for_pager_signal(int signo)
-{
-	wait_for_pager();
-	sigchain_pop(signo);
-	raise(signo);
-}
-
-void setup_pager(void)
-{
-	const char *pager = getenv(subcmd_config.pager_env);
-
-	if (!isatty(1))
-		return;
-	if (!pager)
-		pager = getenv("PAGER");
-	if (!(pager || access("/usr/bin/pager", X_OK)))
-		pager = "/usr/bin/pager";
-	if (!(pager || access("/usr/bin/less", X_OK)))
-		pager = "/usr/bin/less";
-	if (!pager)
-		pager = "cat";
-	if (!*pager || !strcmp(pager, "cat"))
-		return;
-
-	spawned_pager = 1; /* means we are emitting to terminal */
-
-	/* spawn the pager */
-	pager_argv[2] = pager;
-	pager_process.argv = pager_argv;
-	pager_process.in = -1;
-	pager_process.preexec_cb = pager_preexec;
-
-	if (start_command(&pager_process))
-		return;
-
-	/* original process continues, but writes to the pipe */
-	dup2(pager_process.in, 1);
-	if (isatty(2))
-		dup2(pager_process.in, 2);
-	close(pager_process.in);
-
-	/* this makes sure that the parent terminates after the pager */
-	sigchain_push_common(wait_for_pager_signal);
-	atexit(wait_for_pager);
-}
-
-int pager_in_use(void)
-{
-	return spawned_pager;
-}