perf_counter tools: Remove dead code

Vince Weaver reported that there's a handful of #ifdef __MINGW32__
sections in the code.

Remove them as they are in essence dead code - as unlike upstream
Git, the perf tool is unlikely to be ported to Windows.

Reported-by: Vince Weaver <vince@deater.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/util/help.c b/tools/perf/util/help.c
index 6653f7d..17a00e0 100644 (file)
--- a/tools/perf/util/help.c
+++ b/tools/perf/util/help.c
@@ -126,21 +126,6 @@ static int is_executable(const char *name)
            !S_ISREG(st.st_mode))
                return 0;
 
-#ifdef __MINGW32__
-       /* cannot trust the executable bit, peek into the file instead */
-       char buf[3] = { 0 };
-       int n;
-       int fd = open(name, O_RDONLY);
-       st.st_mode &= ~S_IXUSR;
-       if (fd >= 0) {
-               n = read(fd, buf, 2);
-               if (n == 2)
-                       /* DOS executables start with "MZ" */
-                       if (!strcmp(buf, "#!") || !strcmp(buf, "MZ"))
-                               st.st_mode |= S_IXUSR;
-               close(fd);
-       }
-#endif
        return st.st_mode & S_IXUSR;
 }
 

diff --git a/tools/perf/util/pager.c b/tools/perf/util/pager.c
index a28bcca..1915de2 100644 (file)
--- a/tools/perf/util/pager.c
+++ b/tools/perf/util/pager.c
@@ -9,7 +9,6 @@
 
 static int spawned_pager;
 
-#ifndef __MINGW32__
 static void pager_preexec(void)
 {
        /*
@@ -24,7 +23,6 @@ static void pager_preexec(void)
 
        setenv("LESS", "FRSX", 0);
 }
-#endif
 
 static const char *pager_argv[] = { "sh", "-c", NULL, NULL };
 static struct child_process pager_process;
@@ -70,9 +68,8 @@ void setup_pager(void)
        pager_argv[2] = pager;
        pager_process.argv = pager_argv;
        pager_process.in = -1;
-#ifndef __MINGW32__
        pager_process.preexec_cb = pager_preexec;
-#endif
+
        if (start_command(&pager_process))
                return;
 

diff --git a/tools/perf/util/run-command.c b/tools/perf/util/run-command.c
index b2f5e85..a393534 100644 (file)
--- a/tools/perf/util/run-command.c
+++ b/tools/perf/util/run-command.c
@@ -65,7 +65,6 @@ int start_command(struct child_process *cmd)
                cmd->err = fderr[0];
        }
 
-#ifndef __MINGW32__
        fflush(NULL);
        cmd->pid = fork();
        if (!cmd->pid) {
@@ -118,71 +117,6 @@ int start_command(struct child_process *cmd)
                }
                exit(127);
        }
-#else
-       int s0 = -1, s1 = -1, s2 = -1;  /* backups of stdin, stdout, stderr */
-       const char **sargv = cmd->argv;
-       char **env = environ;
-
-       if (cmd->no_stdin) {
-               s0 = dup(0);
-               dup_devnull(0);
-       } else if (need_in) {
-               s0 = dup(0);
-               dup2(fdin[0], 0);
-       } else if (cmd->in) {
-               s0 = dup(0);
-               dup2(cmd->in, 0);
-       }
-
-       if (cmd->no_stderr) {
-               s2 = dup(2);
-               dup_devnull(2);
-       } else if (need_err) {
-               s2 = dup(2);
-               dup2(fderr[1], 2);
-       }
-
-       if (cmd->no_stdout) {
-               s1 = dup(1);
-               dup_devnull(1);
-       } else if (cmd->stdout_to_stderr) {
-               s1 = dup(1);
-               dup2(2, 1);
-       } else if (need_out) {
-               s1 = dup(1);
-               dup2(fdout[1], 1);
-       } else if (cmd->out > 1) {
-               s1 = dup(1);
-               dup2(cmd->out, 1);
-       }
-
-       if (cmd->dir)
-               die("chdir in start_command() not implemented");
-       if (cmd->env) {
-               env = copy_environ();
-               for (; *cmd->env; cmd->env++)
-                       env = env_setenv(env, *cmd->env);
-       }
-
-       if (cmd->perf_cmd) {
-               cmd->argv = prepare_perf_cmd(cmd->argv);
-       }
-
-       cmd->pid = mingw_spawnvpe(cmd->argv[0], cmd->argv, env);
-
-       if (cmd->env)
-               free_environ(env);
-       if (cmd->perf_cmd)
-               free(cmd->argv);
-
-       cmd->argv = sargv;
-       if (s0 >= 0)
-               dup2(s0, 0), close(s0);
-       if (s1 >= 0)
-               dup2(s1, 1), close(s1);
-       if (s2 >= 0)
-               dup2(s2, 2), close(s2);
-#endif
 
        if (cmd->pid < 0) {
                int err = errno;
@@ -288,14 +222,6 @@ int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const
        return run_command(&cmd);
 }
 
-#ifdef __MINGW32__
-static __stdcall unsigned run_thread(void *data)
-{
-       struct async *async = data;
-       return async->proc(async->fd_for_proc, async->data);
-}
-#endif
-
 int start_async(struct async *async)
 {
        int pipe_out[2];
@@ -304,7 +230,6 @@ int start_async(struct async *async)
                return error("cannot create pipe: %s", strerror(errno));
        async->out = pipe_out[0];
 
-#ifndef __MINGW32__
        /* Flush stdio before fork() to avoid cloning buffers */
        fflush(NULL);
 
@@ -319,33 +244,17 @@ int start_async(struct async *async)
                exit(!!async->proc(pipe_out[1], async->data));
        }
        close(pipe_out[1]);
-#else
-       async->fd_for_proc = pipe_out[1];
-       async->tid = (HANDLE) _beginthreadex(NULL, 0, run_thread, async, 0, NULL);
-       if (!async->tid) {
-               error("cannot create thread: %s", strerror(errno));
-               close_pair(pipe_out);
-               return -1;
-       }
-#endif
+
        return 0;
 }
 
 int finish_async(struct async *async)
 {
-#ifndef __MINGW32__
        int ret = 0;
 
        if (wait_or_whine(async->pid))
                ret = error("waitpid (async) failed");
-#else
-       DWORD ret = 0;
-       if (WaitForSingleObject(async->tid, INFINITE) != WAIT_OBJECT_0)
-               ret = error("waiting for thread failed: %lu", GetLastError());
-       else if (!GetExitCodeThread(async->tid, &ret))
-               ret = error("cannot get thread exit code: %lu", GetLastError());
-       CloseHandle(async->tid);
-#endif
+
        return ret;
 }
 

diff --git a/tools/perf/util/run-command.h b/tools/perf/util/run-command.h
index 328289f..cc1837d 100644 (file)
--- a/tools/perf/util/run-command.h
+++ b/tools/perf/util/run-command.h
@@ -79,12 +79,7 @@ struct async {
        int (*proc)(int fd, void *data);
        void *data;
        int out;        /* caller reads from here and closes it */
-#ifndef __MINGW32__
        pid_t pid;
-#else
-       HANDLE tid;
-       int fd_for_proc;
-#endif
 };
 
 int start_async(struct async *async);

diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index b8cfed7..b4be607 100644 (file)
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -67,7 +67,6 @@
 #include <assert.h>
 #include <regex.h>
 #include <utime.h>
-#ifndef __MINGW32__
 #include <sys/wait.h>
 #include <sys/poll.h>
 #include <sys/socket.h>
@@ -81,20 +80,6 @@
 #include <netdb.h>
 #include <pwd.h>
 #include <inttypes.h>
-#if defined(__CYGWIN__)
-#undef _XOPEN_SOURCE
-#include <grp.h>
-#define _XOPEN_SOURCE 600
-#include "compat/cygwin.h"
-#else
-#undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */
-#include <grp.h>
-#define _ALL_SOURCE 1
-#endif
-#else  /* __MINGW32__ */
-/* pull in Windows compatibility stuff */
-#include "compat/mingw.h"
-#endif /* __MINGW32__ */
 
 #ifndef NO_ICONV
 #include <iconv.h>