* generic/tclDTrace.d (new file): add DTrace provider for Tcl; allows

	* generic/tclCompile.h:		  tracing of proc and command entry &
	* generic/tclBasic.c:		  return, bytecode execution, object
	* generic/tclExecute.c:		  allocation and more; with essentially
	* generic/tclInt.h:		  zero cost when tracing is inactive;
	* generic/tclObj.c:		  enable with --enable-dtrace configure
	* generic/tclProc.c:		  arg (disabled by default, will only
	* unix/Makefile.in:		  enable if DTrace is present).
	* unix/configure.in:		  [Patch 1793984]

	* macosx/GNUmakefile:		  enable DTrace support.
	* macosx/Tcl-Common.xcconfig:
	* macosx/Tcl.xcodeproj/project.pbxproj:

	* unix/configure: autoconf-2.59
	* unix/tclConfig.h.in: autoheader-2.59

1 files changed, 230 insertions, 2 deletions

diff --git a/unix/configure b/unix/configure
index 2225436..59e1d3e 100755
--- a/unix/configure
+++ b/unix/configure
@@ -308,7 +308,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS MAN_FLAGS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP EGREP TCL_THREADS RANLIB ac_ct_RANLIB AR LIBOBJS TCL_LIBS DL_LIBS DL_OBJS PLAT_OBJS PLAT_SRCS CFLAGS_DEBUG CFLAGS_OPTIMIZE CFLAGS_WARNING LDFLAGS_DEBUG LDFLAGS_OPTIMIZE CC_SEARCH_FLAGS LD_SEARCH_FLAGS STLIB_LD SHLIB_LD TCL_SHLIB_LD_EXTRAS TK_SHLIB_LD_EXTRAS SHLIB_LD_LIBS SHLIB_CFLAGS SHLIB_SUFFIX MAKE_LIB MAKE_STUB_LIB INSTALL_LIB INSTALL_STUB_LIB CFLAGS_DEFAULT LDFLAGS_DEFAULT INSTALL_TZDATA TCL_VERSION TCL_MAJOR_VERSION TCL_MINOR_VERSION TCL_PATCH_LEVEL TCL_YEAR TCL_LIB_FILE TCL_LIB_FLAG TCL_LIB_SPEC TCL_STUB_LIB_FILE TCL_STUB_LIB_FLAG TCL_STUB_LIB_SPEC TCL_STUB_LIB_PATH TCL_INCLUDE_SPEC TCL_BUILD_STUB_LIB_SPEC TCL_BUILD_STUB_LIB_PATH TCL_SRC_DIR CFG_TCL_SHARED_LIB_SUFFIX CFG_TCL_UNSHARED_LIB_SUFFIX CFG_TCL_EXPORT_FILE_SUFFIX TCL_SHARED_BUILD LD_LIBRARY_PATH_VAR TCL_BUILD_LIB_SPEC TCL_NEEDS_EXP_FILE TCL_BUILD_EXP_FILE TCL_EXP_FILE TCL_LIB_VERSIONS_OK TCL_SHARED_LIB_SUFFIX TCL_UNSHARED_LIB_SUFFIX TCL_HAS_LONGLONG BUILD_DLTEST TCL_PACKAGE_PATH TCL_MODULE_PATH TCL_LIBRARY PRIVATE_INCLUDE_DIR HTML_DIR EXTRA_CC_SWITCHES EXTRA_APP_CC_SWITCHES EXTRA_INSTALL EXTRA_INSTALL_BINARIES EXTRA_BUILD_HTML EXTRA_TCLSH_LIBS DLTEST_LD DLTEST_SUFFIX'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS MAN_FLAGS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP EGREP TCL_THREADS RANLIB ac_ct_RANLIB AR LIBOBJS TCL_LIBS DL_LIBS DL_OBJS PLAT_OBJS PLAT_SRCS CFLAGS_DEBUG CFLAGS_OPTIMIZE CFLAGS_WARNING LDFLAGS_DEBUG LDFLAGS_OPTIMIZE CC_SEARCH_FLAGS LD_SEARCH_FLAGS STLIB_LD SHLIB_LD TCL_SHLIB_LD_EXTRAS TK_SHLIB_LD_EXTRAS SHLIB_LD_LIBS SHLIB_CFLAGS SHLIB_SUFFIX MAKE_LIB MAKE_STUB_LIB INSTALL_LIB INSTALL_STUB_LIB CFLAGS_DEFAULT LDFLAGS_DEFAULT DTRACE TCL_VERSION TCL_MAJOR_VERSION TCL_MINOR_VERSION TCL_PATCH_LEVEL TCL_YEAR TCL_LIB_FILE TCL_LIB_FLAG TCL_LIB_SPEC TCL_STUB_LIB_FILE TCL_STUB_LIB_FLAG TCL_STUB_LIB_SPEC TCL_STUB_LIB_PATH TCL_INCLUDE_SPEC TCL_BUILD_STUB_LIB_SPEC TCL_BUILD_STUB_LIB_PATH TCL_SRC_DIR CFG_TCL_SHARED_LIB_SUFFIX CFG_TCL_UNSHARED_LIB_SUFFIX CFG_TCL_EXPORT_FILE_SUFFIX TCL_SHARED_BUILD LD_LIBRARY_PATH_VAR TCL_BUILD_LIB_SPEC TCL_NEEDS_EXP_FILE TCL_BUILD_EXP_FILE TCL_EXP_FILE TCL_LIB_VERSIONS_OK TCL_SHARED_LIB_SUFFIX TCL_UNSHARED_LIB_SUFFIX TCL_HAS_LONGLONG INSTALL_TZDATA DTRACE_SRC DTRACE_HDR DTRACE_OBJ BUILD_DLTEST TCL_PACKAGE_PATH TCL_MODULE_PATH TCL_LIBRARY PRIVATE_INCLUDE_DIR HTML_DIR EXTRA_CC_SWITCHES EXTRA_APP_CC_SWITCHES EXTRA_INSTALL EXTRA_INSTALL_BINARIES EXTRA_BUILD_HTML EXTRA_TCLSH_LIBS DLTEST_LD DLTEST_SUFFIX'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -859,6 +859,7 @@ Optional Features:
   --enable-langinfo       use nl_langinfo if possible to determine encoding at
                           startup, otherwise use old heuristic (default: on)
   --enable-dll-unloading  enable the 'unload' command (default: on)
+  --enable-dtrace         build with DTrace support (default: off)
   --enable-framework      package shared libraries in MacOSX frameworks
                           (default: off)
 
@@ -17623,6 +17624,7 @@ echo "${ECHO_T}$tcl_ok" >&6
 #	to be installed by Tcl. The default is autodetection, but can
 #	be overriden on the configure command line either way.
 #------------------------------------------------------------------------
+
 echo "$as_me:$LINENO: checking for timezone data" >&5
 echo $ECHO_N "checking for timezone data... $ECHO_C" >&6
 
@@ -17683,6 +17685,222 @@ echo "${ECHO_T}supplied by Tcl" >&6
     INSTALL_TZDATA=install-tzdata
 fi
 
+#--------------------------------------------------------------------
+#	DTrace support
+#--------------------------------------------------------------------
+
+# Check whether --enable-dtrace or --disable-dtrace was given.
+if test "${enable_dtrace+set}" = set; then
+  enableval="$enable_dtrace"
+  tcl_ok=$enableval
+else
+  tcl_ok=no
+fi;
+if test $tcl_ok = yes; then
+    if test "${ac_cv_header_sys_sdt_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for sys/sdt.h" >&5
+echo $ECHO_N "checking for sys/sdt.h... $ECHO_C" >&6
+if test "${ac_cv_header_sys_sdt_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_sys_sdt_h" >&5
+echo "${ECHO_T}$ac_cv_header_sys_sdt_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking sys/sdt.h usability" >&5
+echo $ECHO_N "checking sys/sdt.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <sys/sdt.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking sys/sdt.h presence" >&5
+echo $ECHO_N "checking sys/sdt.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/sdt.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: sys/sdt.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: sys/sdt.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: sys/sdt.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: sys/sdt.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: sys/sdt.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: sys/sdt.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: sys/sdt.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: sys/sdt.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: sys/sdt.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------ ##
+## Report this to the tcl lists.  ##
+## ------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for sys/sdt.h" >&5
+echo $ECHO_N "checking for sys/sdt.h... $ECHO_C" >&6
+if test "${ac_cv_header_sys_sdt_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_sys_sdt_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_sys_sdt_h" >&5
+echo "${ECHO_T}$ac_cv_header_sys_sdt_h" >&6
+
+fi
+if test $ac_cv_header_sys_sdt_h = yes; then
+  tcl_ok=yes
+else
+  tcl_ok=no
+fi
+
+
+fi
+if test $tcl_ok = yes; then
+    # Extract the first word of "dtrace", so it can be a program name with args.
+set dummy dtrace; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_path_DTRACE+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  case $DTRACE in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_DTRACE="$DTRACE" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_dummy="$PATH:/usr/sbin"
+for as_dir in $as_dummy
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_DTRACE="$as_dir/$ac_word$ac_exec_ext"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+  ;;
+esac
+fi
+DTRACE=$ac_cv_path_DTRACE
+
+if test -n "$DTRACE"; then
+  echo "$as_me:$LINENO: result: $DTRACE" >&5
+echo "${ECHO_T}$DTRACE" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+    test -z "$ac_cv_path_DTRACE" && tcl_ok=no
+fi
+echo "$as_me:$LINENO: checking whether to enable DTrace support" >&5
+echo $ECHO_N "checking whether to enable DTrace support... $ECHO_C" >&6
+if test $tcl_ok = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define USE_DTRACE 1
+_ACEOF
+
+    DTRACE_SRC="\${DTRACE_SRC}"
+    DTRACE_HDR="\${DTRACE_HDR}"
+    if test "`uname -s`" != "Darwin" ; then
+	DTRACE_OBJ="\${DTRACE_OBJ}"
+    fi
+fi
+echo "$as_me:$LINENO: result: $tcl_ok" >&5
+echo "${ECHO_T}$tcl_ok" >&6
 
 #--------------------------------------------------------------------
 #	The statements below define a collection of symbols related to
@@ -17928,6 +18146,12 @@ TCL_SHARED_BUILD=${SHARED_BUILD}
 
 
 
+
+
+
+
+
+
                               ac_config_files="$ac_config_files Makefile:../unix/Makefile.in dltest/Makefile:../unix/dltest/Makefile.in tclConfig.sh:../unix/tclConfig.sh.in"
 
 cat >confcache <<\_ACEOF
@@ -18607,7 +18831,7 @@ s,@INSTALL_LIB@,$INSTALL_LIB,;t t
 s,@INSTALL_STUB_LIB@,$INSTALL_STUB_LIB,;t t
 s,@CFLAGS_DEFAULT@,$CFLAGS_DEFAULT,;t t
 s,@LDFLAGS_DEFAULT@,$LDFLAGS_DEFAULT,;t t
-s,@INSTALL_TZDATA@,$INSTALL_TZDATA,;t t
+s,@DTRACE@,$DTRACE,;t t
 s,@TCL_VERSION@,$TCL_VERSION,;t t
 s,@TCL_MAJOR_VERSION@,$TCL_MAJOR_VERSION,;t t
 s,@TCL_MINOR_VERSION@,$TCL_MINOR_VERSION,;t t
@@ -18637,6 +18861,10 @@ s,@TCL_LIB_VERSIONS_OK@,$TCL_LIB_VERSIONS_OK,;t t
 s,@TCL_SHARED_LIB_SUFFIX@,$TCL_SHARED_LIB_SUFFIX,;t t
 s,@TCL_UNSHARED_LIB_SUFFIX@,$TCL_UNSHARED_LIB_SUFFIX,;t t
 s,@TCL_HAS_LONGLONG@,$TCL_HAS_LONGLONG,;t t
+s,@INSTALL_TZDATA@,$INSTALL_TZDATA,;t t
+s,@DTRACE_SRC@,$DTRACE_SRC,;t t
+s,@DTRACE_HDR@,$DTRACE_HDR,;t t
+s,@DTRACE_OBJ@,$DTRACE_OBJ,;t t
 s,@BUILD_DLTEST@,$BUILD_DLTEST,;t t
 s,@TCL_PACKAGE_PATH@,$TCL_PACKAGE_PATH,;t t
 s,@TCL_MODULE_PATH@,$TCL_MODULE_PATH,;t t