configure

linux进程跟踪的工具和源代码

#include <stdio.h>
#include <signal.h>
#include <sys/procfs.h>

main()
{
	int pid;
	char proc[32];
	FILE *ctl;
	FILE *status;
	int cmd;
	struct pstatus pstatus;

	if ((pid = fork()) == 0) {
		pause();
		exit(0);
	}
	sprintf(proc, "/proc/%d/ctl", pid);
	if ((ctl = fopen(proc, "w")) == NULL)
		goto fail;
	sprintf(proc, "/proc/%d/status", pid);
	if ((status = fopen (proc, "r")) == NULL)
		goto fail;
	cmd = PCSTOP;
	if (write (fileno (ctl), &cmd, sizeof cmd) < 0)
		goto fail;
	if (read (fileno (status), &pstatus, sizeof pstatus) < 0)
		goto fail;
	kill(pid, SIGKILL);
	exit(0);
fail:
	kill(pid, SIGKILL);
	exit(1);
}

EOF
if { (eval echo configure:1010: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
then
  ac_cv_mp_procfs=yes
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -fr conftest*
  ac_cv_mp_procfs=no
fi
rm -fr conftest*
fi

fi

echo "$ac_t""$ac_cv_mp_procfs" 1>&6
if test "$ac_cv_mp_procfs" = yes
then
	cat >> confdefs.h <<\EOF
#define HAVE_MP_PROCFS 1
EOF

fi

echo $ac_n "checking for pollable procfs""... $ac_c" 1>&6
echo "configure:1034: checking for pollable procfs" >&5
if eval "test \"`echo '$''{'ac_cv_pollable_procfs'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  if test "$cross_compiling" = yes; then
  
# Guess or punt.
case "$host_os" in
solaris2*|irix5*|svr4.2uw*|svr5*)
	ac_cv_pollable_procfs=yes
	;;
*)
	ac_cv_pollable_procfs=no
	;;
esac

else
  cat > conftest.$ac_ext <<EOF
#line 1052 "configure"
#include "confdefs.h"

#include <stdio.h>
#include <signal.h>
#include <sys/procfs.h>
#include <sys/stropts.h>
#include <poll.h>

#ifdef HAVE_MP_PROCFS
#define PIOCSTOP	PCSTOP
#define POLLWANT	POLLWRNORM
#define PROC		"/proc/%d/ctl"
#define PROC_MODE	"w"
int IOCTL (int fd, int cmd, int arg) {
	return write (fd, &cmd, sizeof cmd);
}
#else
#define POLLWANT	POLLPRI
#define	PROC		"/proc/%d"
#define PROC_MODE	"r+"
#define IOCTL		ioctl
#endif

main()
{
	int pid;
	char proc[32];
	FILE *pfp;
	struct pollfd pfd;

	if ((pid = fork()) == 0) {
		pause();
		exit(0);
	}
	sprintf(proc, PROC, pid);
	if ((pfp = fopen(proc, PROC_MODE)) == NULL)
		goto fail;
	if (IOCTL(fileno(pfp), PIOCSTOP, NULL) < 0)
		goto fail;
	pfd.fd = fileno(pfp);
	pfd.events = POLLWANT;
	if (poll(&pfd, 1, 0) < 0)
		goto fail;
	if (!(pfd.revents & POLLWANT))
		goto fail;
	kill(pid, SIGKILL);
	exit(0);
fail:
	kill(pid, SIGKILL);
	exit(1);
}

EOF
if { (eval echo configure:1106: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
then
  ac_cv_pollable_procfs=yes
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -fr conftest*
  ac_cv_pollable_procfs=no
fi
rm -fr conftest*
fi

fi

echo "$ac_t""$ac_cv_pollable_procfs" 1>&6
if test "$ac_cv_pollable_procfs" = yes
then
	cat >> confdefs.h <<\EOF
#define HAVE_POLLABLE_PROCFS 1
EOF

fi

echo $ac_n "checking for pr_syscall in struct prstatus""... $ac_c" 1>&6
echo "configure:1130: checking for pr_syscall in struct prstatus" >&5
if eval "test \"`echo '$''{'ac_cv_struct_pr_syscall'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.$ac_ext <<EOF
#line 1135 "configure"
#include "confdefs.h"
#include <sys/procfs.h>
int main() {
#ifdef HAVE_MP_PROCFS
pstatus_t s;
s.pr_lwp.pr_syscall
#else
prstatus_t s;
s.pr_syscall
#endif
; return 0; }
EOF
if { (eval echo configure:1148: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
  rm -rf conftest*
  ac_cv_struct_pr_syscall=yes
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  ac_cv_struct_pr_syscall=no
fi
rm -f conftest*
fi

echo "$ac_t""$ac_cv_struct_pr_syscall" 1>&6
if test "$ac_cv_struct_pr_syscall" = yes
then
	cat >> confdefs.h <<\EOF
#define HAVE_PR_SYSCALL 1
EOF

fi

echo $ac_n "checking for msg_control in struct msghdr""... $ac_c" 1>&6
echo "configure:1170: checking for msg_control in struct msghdr" >&5
if eval "test \"`echo '$''{'ac_cv_struct_msg_control'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.$ac_ext <<EOF
#line 1175 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <sys/socket.h>
int main() {
#undef msg_control
struct msghdr m; m.msg_control;
; return 0; }
EOF
if { (eval echo configure:1184: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
  rm -rf conftest*
  ac_cv_struct_msg_control=yes
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  ac_cv_struct_msg_control=no
fi
rm -f conftest*
fi

echo "$ac_t""$ac_cv_struct_msg_control" 1>&6
if test "$ac_cv_struct_msg_control" = yes
then
	cat >> confdefs.h <<\EOF
#define HAVE_MSG_CONTROL 1
EOF

fi

for ac_prog in mawk gawk nawk awk
do
# Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:1210: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_AWK'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  if test -n "$AWK"; then
  ac_cv_prog_AWK="$AWK" # Let the user override the test.
else
  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
  ac_dummy="$PATH"
  for ac_dir in $ac_dummy; do
    test -z "$ac_dir" && ac_dir=.
    if test -f $ac_dir/$ac_word; then
      ac_cv_prog_AWK="$ac_prog"
      break
    fi
  done
  IFS="$ac_save_ifs"
fi
fi
AWK="$ac_cv_prog_AWK"
if test -n "$AWK"; then
  echo "$ac_t""$AWK" 1>&6
else
  echo "$ac_t""no" 1>&6
fi

test -n "$AWK" && break
done


echo $ac_n "checking for primary include directory""... $ac_c" 1>&6
echo "configure:1241: checking for primary include directory" >&5
includedir=/usr/include
if test -n "$GCC"
then
	>conftest.c
	new_includedir=`
		$CC -v -E conftest.c 2>&1 | $AWK '
			/^End of search list/ { print last; exit }
			{ last = $1 }
		'
	`
	rm -f conftest.c
	if test -n "$new_includedir" && test -d "$new_includedir"
	then
		includedir=$new_includedir
	fi
fi
echo "$ac_t""$includedir" 1>&6

if test "x$OPSYS" = "xSUNOS4" && test "x$ARCH" = "xSPARC"
then
	echo $ac_n "checking for valid machine include directory""... $ac_c" 1>&6
echo "configure:1263: checking for valid machine include directory" >&5
	if test -d "$includedir/sun4"
	then
		rm -f machine
		ln -s $includedir/sun4 machine
		echo "$ac_t""yes" 1>&6
		cat >> confdefs.h <<\EOF
#define SUNOS4_KERNEL_ARCH_KLUDGE 1
EOF

	else
		echo "$ac_t""no" 1>&6
	fi
fi

if test -z "$WARNFLAGS"
then
	if test -n "$GCC"
	then
		# If we're using gcc we want warning flags.
		WARNFLAGS=-Wall
	fi
fi

if test "x$OPSYS" = "xSUNOS4"
then
	if test -n "$GCC"
	then
		# SunOS 4.x header files don't declare int functions.
		WARNFLAGS="$WARNFLAGS -Wno-implicit"
	fi
fi
echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
echo "configure:1296: checking how to run the C preprocessor" >&5
# On Suns, sometimes $CPP names a directory.
if test -n "$CPP" && test -d "$CPP"; then
  CPP=
fi
if test -z "$CPP"; then
if eval "test \"`echo '$''{'ac_cv_prog_CPP'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
    # This must be in double quotes, not single quotes, because CPP may get
  # substituted into the Makefile and "${CC-cc}" will confuse make.
  CPP="${CC-cc} -E"
  # On the NeXT, cc -E runs the code through the compiler's parser,
  # not just through cpp.
  cat > conftest.$ac_ext <<EOF
#line 1311 "configure"
#include "confdefs.h"
#include <assert.h>
Syntax Error
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:1317: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
  :
else
  echo "$ac_err" >&5
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  CPP="${CC-cc} -E -traditional-cpp"
  cat > conftest.$ac_ext <<EOF
#line 1328 "configure"
#include "confdefs.h"
#include <assert.h>
Syntax Error
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:1334: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
  :
else
  echo "$ac_err" >&5
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  CPP="${CC-cc} -nologo -E"
  cat > conftest.$ac_ext <<EOF
#line 1345 "configure"
#include "confdefs.h"
#include <assert.h>
Syntax Error
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:1351: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
  :
else
  echo "$ac_err" >&5
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  CPP=/lib/cpp
fi
rm -f conftest*
fi
rm -f conftest*
fi
rm -f conftest*
  ac_cv_prog_CPP="$CPP"
fi
  CPP="$ac_cv_prog_CPP"
else
  ac_cv_prog_CPP="$CPP"
fi
echo "$ac_t""$CPP" 1>&6

if test $ac_cv_prog_gcc = yes; then
    echo $ac_n "checking whether ${CC-cc} needs -traditional""... $ac_c" 1>&6
echo "configure:1377: checking whether ${CC-cc} needs -traditional" >&5
if eval "test \"`echo '$''{'ac_cv_prog_gcc_traditional'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
    ac_pattern="Autoconf.*'x'"
  cat > conftest.$ac_ext <<EOF
#line 1383 "configure"
#include "confdefs.h"
#include <sgtty.h>
Autoconf TIOCGETP
EOF
if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
  egrep "$ac_pattern" >/dev/null 2>&1; then
  rm -rf conftest*
  ac_cv_prog_gcc_traditional=yes
else
  rm -rf conftest*
  ac_cv_prog_gcc_traditional=no
fi
rm -f conftest*


  if test $ac_cv_prog_gcc_traditional = no; then
    cat > conftest.$ac_ext <<EOF
#line 1401 "configure"
#include "confdefs.h"
#include <termio.h>
Autoconf TCGETA
EOF
if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
  egrep "$ac_pattern" >/dev/null 2>&1; then
  rm -rf conftest*
  ac_cv_prog_gcc_traditional=yes
fi
rm -f conftest*

  fi
fi

echo "$ac_t""$ac_cv_prog_gcc_traditional" 1>&6
  if test $ac_cv_prog_gcc_traditional = yes; then
    CC="$CC -traditional"
  fi
fi

# Find a good install program.  We prefer a C program (faster),
# so one script is as good as another.  But avoid the broken or
# incompatible versions:
# SysV /etc/install, /usr/sbin/install
# SunOS /usr/etc/install
# IRIX /sbin/install
# AIX /bin/install
# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
# AFS /usr/afsws/bin/install, which mishandles nonexistent args
# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
# ./install, which can be erroneously created by make from ./install.sh.
echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
echo "configure:1434: checking for a BSD compatible install" >&5
if test -z "$INSTALL"; then
if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
    IFS="${IFS= 	}"; ac_save_IFS="$IFS"; IFS=":"
  for ac_dir in $PATH; do
    # Account for people who put trailing slashes in PATH elements.
    case "$ac_dir/" in
    /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
    *)
      # OSF1 and SCO ODT 3.0 have their own names for install.
      # Don't use installbsd from OSF since it installs stuff as root
      # by default.
      for ac_prog in ginstall scoinst install; do
        if test -f $ac_dir/$ac_prog; then
	  if test $ac_prog = install &&
            grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
	    # AIX install.  It has an incompatible calling convention.
	    :
	  else
	    ac_cv_path_install="$ac_dir/$ac_prog -c"
	    break 2
	  fi
	fi
      done