2006-01-04 Michael Snyder <msnyder@redhat.com>

	Checkpoint/Restart for Linux.
	* linux-nat.c: Add support for debugging multiple forks.
	Add #include for linux-fork.h (interface spec).
	(super_mourn_inferior): New function pointer.
	(child_mourn_inferior): New function / target method.
	(linux_target): Claim to_mourn_inferior method pointer.
	(child_follow_fork): Call interface to linux-fork, conditionally
	add new fork processes to list of debugged processes.
	(kill_inferior): Use interface to linux-fork to kill
	multiple processes.

	* linux-fork.h: New file.
	* linux-fork.c: New file.  Support for debugging multiple forks
	of the same program.  Support for checkpoint and restart commands.

	* infrun.c (nullify_last_target_wait_ptid): New function.

	* Makefile.in: Add linux-fork.
	* config/*/linux.mh: Add linux-fork.
	* NEWS: Mention new functionality.

13 files changed, 13 insertions, 13 deletions

diff --git a/gdb/config/alpha/alpha-linux.mh b/gdb/config/alpha/alpha-linux.mh
index 5ee0ec3..28a50c1 100644
--- a/gdb/config/alpha/alpha-linux.mh
+++ b/gdb/config/alpha/alpha-linux.mh
@@ -2,7 +2,7 @@
 NAT_FILE= nm-linux.h
 NATDEPFILES= inf-ptrace.o corelow.o alpha-nat.o alpha-linux-nat.o \
 	fork-child.o proc-service.o linux-thread-db.o gcore.o \
-	linux-nat.o
+	linux-nat.o linux-fork.o
 
 # The dynamically loaded libthread_db needs access to symbols in the
 # gdb executable.
diff --git a/gdb/config/arm/linux.mh b/gdb/config/arm/linux.mh
index 34a1689..32181a4 100644
--- a/gdb/config/arm/linux.mh
+++ b/gdb/config/arm/linux.mh
@@ -3,7 +3,7 @@
 NAT_FILE= nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o corelow.o	\
 	core-regset.o arm-linux-nat.o gcore.o	\
-	proc-service.o linux-thread-db.o linux-nat.o
+	proc-service.o linux-thread-db.o linux-nat.o linux-fork.o
 
 LOADLIBES= -ldl -rdynamic
 
diff --git a/gdb/config/i386/linux.mh b/gdb/config/i386/linux.mh
index ec058a5..62fff99 100644
--- a/gdb/config/i386/linux.mh
+++ b/gdb/config/i386/linux.mh
@@ -4,7 +4,7 @@ NAT_FILE= nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o corelow.o \
 	core-aout.o i386-nat.o i386-linux-nat.o \
 	proc-service.o linux-thread-db.o gcore.o \
-	linux-nat.o
+	linux-nat.o linux-fork.o
 
 # The dynamically loaded libthread_db needs access to symbols in the
 # gdb executable.
diff --git a/gdb/config/i386/linux64.mh b/gdb/config/i386/linux64.mh
index b764ca5..1c03d71 100644
--- a/gdb/config/i386/linux64.mh
+++ b/gdb/config/i386/linux64.mh
@@ -1,7 +1,7 @@
 # Host: GNU/Linux x86-64
 NATDEPFILES= inf-ptrace.o fork-child.o \
 	i386-nat.o amd64-nat.o amd64-linux-nat.o linux-nat.o \
-	proc-service.o linux-thread-db.o gcore.o 
+	proc-service.o linux-thread-db.o gcore.o  linux-fork.o
 NAT_FILE= nm-linux64.h
 
 # The dynamically loaded libthread_db needs access to symbols in the
diff --git a/gdb/config/ia64/linux.mh b/gdb/config/ia64/linux.mh
index 2e43f33..3ae22b2 100644
--- a/gdb/config/ia64/linux.mh
+++ b/gdb/config/ia64/linux.mh
@@ -3,6 +3,6 @@
 NAT_FILE= nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o corelow.o gcore.o \
 	core-aout.o core-regset.o ia64-linux-nat.o \
-	proc-service.o linux-thread-db.o linux-nat.o
+	proc-service.o linux-thread-db.o linux-nat.o linux-fork.o
 
 LOADLIBES = -ldl -rdynamic
diff --git a/gdb/config/m32r/linux.mh b/gdb/config/m32r/linux.mh
index 0986bab..0f94bd8 100644
--- a/gdb/config/m32r/linux.mh
+++ b/gdb/config/m32r/linux.mh
@@ -3,6 +3,6 @@
 NAT_FILE= nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o corelow.o	\
 	m32r-linux-nat.o gcore.o proc-service.o linux-thread-db.o	\
-	linux-nat.o
+	linux-nat.o linux-fork.o
 
 LOADLIBES= -ldl -rdynamic
diff --git a/gdb/config/m68k/linux.mh b/gdb/config/m68k/linux.mh
index e867396..871632d 100644
--- a/gdb/config/m68k/linux.mh
+++ b/gdb/config/m68k/linux.mh
@@ -3,7 +3,7 @@
 NAT_FILE= nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o \
 	corelow.o core-aout.o m68klinux-nat.o gcore.o \
-	proc-service.o linux-thread-db.o linux-nat.o
+	proc-service.o linux-thread-db.o linux-nat.o linux-fork.o
 
 # The dynamically loaded libthread_db needs access to symbols in the
 # gdb executable.
diff --git a/gdb/config/mips/linux.mh b/gdb/config/mips/linux.mh
index 56f4f9c..4f5e01f 100644
--- a/gdb/config/mips/linux.mh
+++ b/gdb/config/mips/linux.mh
@@ -2,6 +2,6 @@
 NAT_FILE= nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o mips-linux-nat.o \
 	linux-thread-db.o proc-service.o gcore.o \
-	linux-nat.o
+	linux-nat.o linux-fork.o
 
 LOADLIBES = -ldl -rdynamic
diff --git a/gdb/config/pa/linux.mh b/gdb/config/pa/linux.mh
index 59b4c58..b0362e4 100644
--- a/gdb/config/pa/linux.mh
+++ b/gdb/config/pa/linux.mh
@@ -3,6 +3,6 @@ XDEPFILES=
 NAT_FILE= nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o corelow.o gcore.o \
 	core-regset.o hppa-linux-nat.o \
-	proc-service.o linux-thread-db.o linux-nat.o
+	proc-service.o linux-thread-db.o linux-nat.o linux-fork.o
 
 LOADLIBES = -ldl -rdynamic
diff --git a/gdb/config/powerpc/linux.mh b/gdb/config/powerpc/linux.mh
index 8b3cbbb..9a6a2a4 100644
--- a/gdb/config/powerpc/linux.mh
+++ b/gdb/config/powerpc/linux.mh
@@ -5,6 +5,6 @@ XM_CLIBS=
 NAT_FILE= nm-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o \
 	ppc-linux-nat.o proc-service.o linux-thread-db.o \
-	gcore.o linux-nat.o
+	gcore.o linux-nat.o linux-fork.o
 
 LOADLIBES = -ldl -rdynamic
diff --git a/gdb/config/powerpc/ppc64-linux.mh b/gdb/config/powerpc/ppc64-linux.mh
index 0a4a4ab..6cee590 100644
--- a/gdb/config/powerpc/ppc64-linux.mh
+++ b/gdb/config/powerpc/ppc64-linux.mh
@@ -5,7 +5,7 @@ XM_CLIBS=
 NAT_FILE= nm-ppc64-linux.h
 NATDEPFILES= inf-ptrace.o fork-child.o \
 	ppc-linux-nat.o proc-service.o linux-thread-db.o \
-	gcore.o linux-nat.o
+	gcore.o linux-nat.o linux-fork.o
 
 # The PowerPC has severe limitations on TOC size, and uses them even
 # for non-PIC code.  GDB overflows those tables when compiling with
diff --git a/gdb/config/sparc/linux.mh b/gdb/config/sparc/linux.mh
index bc52fb7..0494381 100644
--- a/gdb/config/sparc/linux.mh
+++ b/gdb/config/sparc/linux.mh
@@ -3,7 +3,7 @@ NAT_FILE= nm-linux.h
 NATDEPFILES= sparc-nat.o sparc-sol2-nat.o sparc-linux-nat.o \
 	corelow.o core-regset.o fork-child.o inf-ptrace.o \
 	proc-service.o linux-thread-db.o \
-	gcore.o linux-nat.o
+	gcore.o linux-nat.o linux-fork.o
 
 # The dynamically loaded libthread_db needs access to symbols in the
 # gdb executable.
diff --git a/gdb/config/sparc/linux64.mh b/gdb/config/sparc/linux64.mh
index 26514cf..59dfbf0 100644
--- a/gdb/config/sparc/linux64.mh
+++ b/gdb/config/sparc/linux64.mh
@@ -4,7 +4,7 @@ NATDEPFILES= sparc-nat.o sparc64-nat.o sparc-sol2-nat.o sparc64-linux-nat.o \
 	corelow.o core-regset.o \
 	fork-child.o inf-ptrace.o \
 	proc-service.o linux-thread-db.o \
-	gcore.o linux-nat.o
+	gcore.o linux-nat.o linux-fork.o
 
 # The dynamically loaded libthread_db needs access to symbols in the
 # gdb executable.