File gstack.patch of Package gdb

2004-11-23  Andrew Cagney  <cagney@redhat.com>

	* Makefile.in (uninstall-gstack, install-gstack): New rules, add
	to install and uninstall.
	* gstack.sh: New file.

Index: gdb/Makefile.in
===================================================================
--- gdb/Makefile.in.orig
+++ gdb/Makefile.in
@@ -1767,7 +1767,7 @@ info install-info clean-info dvi pdf ins
 install: all
 	@$(MAKE) $(FLAGS_TO_PASS) install-only
 
-install-only: $(CONFIG_INSTALL)
+install-only: install-gstack $(CONFIG_INSTALL)
 	transformed_name=`t='$(program_transform_name)'; \
 			  echo gdb | sed -e "$$t"` ; \
 		if test "x$$transformed_name" = x; then \
@@ -1804,6 +1804,20 @@ install-only: $(CONFIG_INSTALL)
 		$(DESTDIR)$(bindir)/$$transformed_name
 	@$(MAKE) DO=install "DODIRS=$(SUBDIRS)" $(FLAGS_TO_PASS) subdir_do
 
+GSTACK=gstack
+.PHONY: install-gstack
+install-gstack:
+	transformed_name=`t='$(program_transform_name)'; \
+			  echo $(GSTACK) | sed -e "$$t"` ; \
+	if test "x$$transformed_name" = x; then \
+	  transformed_name=$(GSTACK) ; \
+	else \
+	  true ; \
+	fi ; \
+	$(SHELL) $(srcdir)/../mkinstalldirs $(DESTDIR)$(bindir) ; \
+	$(INSTALL_SCRIPT) $(srcdir)/$(GSTACK).sh \
+		$(DESTDIR)$(bindir)/$$transformed_name
+
 install-strip:
 	$(MAKE) $(FLAGS_TO_PASS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
 	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
@@ -1816,7 +1830,7 @@ install-guile:
 install-python:
 	$(SHELL) $(srcdir)/../mkinstalldirs $(DESTDIR)$(GDB_DATADIR)/python/gdb
 
-uninstall: force $(CONFIG_UNINSTALL)
+uninstall: force uninstall-gstack $(CONFIG_UNINSTALL)
 	transformed_name=`t='$(program_transform_name)'; \
 			  echo gdb | sed -e $$t` ; \
 		if test "x$$transformed_name" = x; then \
@@ -1847,6 +1861,17 @@ uninstall: force $(CONFIG_UNINSTALL)
 	rm -f $(DESTDIR)$(bindir)/$$transformed_name
 	@$(MAKE) DO=uninstall "DODIRS=$(SUBDIRS)" $(FLAGS_TO_PASS) subdir_do
 
+.PHONY: uninstall-gstack
+uninstall-gstack:
+	transformed_name=`t='$(program_transform_name)'; \
+			  echo $(GSTACK) | sed -e $$t` ; \
+	if test "x$$transformed_name" = x; then \
+	  transformed_name=$(GSTACK) ; \
+	else \
+	  true ; \
+	fi ; \
+	rm -f $(DESTDIR)$(bindir)/$$transformed_name$(EXEEXT)
+
 # The C++ name parser can be built standalone for testing.
 test-cp-name-parser.o: cp-name-parser.c
 	$(COMPILE) -DTEST_CPNAMES cp-name-parser.c
Index: gdb/gstack.sh
===================================================================
--- /dev/null
+++ gdb/gstack.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+
+if test $# -ne 1; then
+    echo "Usage: `basename $0 .sh` <process-id>" 1>&2
+    exit 1
+fi
+
+if test ! -r /proc/$1; then
+    echo "Process $1 not found." 1>&2
+    exit 1
+fi
+
+# GDB doesn't allow "thread apply all bt" when the process isn't
+# threaded; need to peek at the process to determine if that or the
+# simpler "bt" should be used.
+
+backtrace="bt"
+if test -d /proc/$1/task ; then
+    # Newer kernel; has a task/ directory.
+    if test `ls /proc/$1/task | wc -l` -gt 1 2>/dev/null ; then
+	backtrace="thread apply all bt"
+    fi
+elif test -f /proc/$1/maps ; then
+    # Older kernel; go by it loading libpthread.
+    if grep -e libpthread /proc/$1/maps > /dev/null 2>&1 ; then
+	backtrace="thread apply all bt"
+    fi
+fi
+
+GDB=${GDB:-gdb}
+
+if $GDB -nx --quiet --batch --readnever > /dev/null 2>&1; then
+    readnever=--readnever
+else
+    readnever=
+fi
+
+# Run GDB, strip out unwanted noise.
+$GDB --quiet $readnever -nx /proc/$1/exe $1 <<EOF 2>&1 | 
+$backtrace
+EOF
+sed -n \
+    -e 's/^(gdb) //' \
+    -e '/^#/p' \
+    -e '/^Thread/p'