[Libsysio-commit] HEAD: libsysio Makefile.am Rules.make configure.in

[Lee W. <lw...@us...>]

Update of /cvsroot/libsysio/libsysio
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv12543

Modified Files:
	Makefile.am Rules.make configure.in 
Log Message:


Begin adding support for thread-safe operation. In detail:

1) Add smp.h and smp_posix.c
2) Add a big lock, wrapping the user API with appropriate mutex_lock and
	mutex_unlock calls. NB; initialization is *not* thread safe.
3) Add support for P_{GET,LOCK}, PB_LOCK, I_{GET,LOCK}, FIL_{GET,LOCK} and
	alter all related ref/de-ref usage to use get/put or lock/unlock
	as appropriate.
4) Remedial (no-op) support for MNT_GET.

By default, POSIX threads supoprt is not enabled. To enable, use --with-threads,
or --with-threads=yes, or --with-threads=posix.


Index: Makefile.am
===================================================================
RCS file: /cvsroot/libsysio/libsysio/Makefile.am,v
retrieving revision 1.16
retrieving revision 1.17
diff -u -w -b -B -p -r1.16 -r1.17
--- Makefile.am	17 Jun 2008 15:17:30 -0000	1.16
+++ Makefile.am	17 Jun 2008 17:18:56 -0000	1.17
@@ -63,6 +63,7 @@ AM_CFLAGS = $(OPTIONAL_LUSTRE_CFLAGS)
 
 __LIBBUILD_DIR__libsysio_a_SOURCES = \
 	$(SRCDIR_SRCS) \
+	$(THREAD_MODEL_POSIX_SRCS) \
  	$(OPTIONAL_STDDEV_SRCS) \
 	$(OPTIONAL_STDFD_SRCS) \
 	$(OPTIONAL_INCORE_SRCS) \

Index: Rules.make
===================================================================
RCS file: /cvsroot/libsysio/libsysio/Rules.make,v
retrieving revision 1.14
retrieving revision 1.15
diff -u -w -b -B -p -r1.14 -r1.15
--- Rules.make	17 Jun 2008 15:17:30 -0000	1.14
+++ Rules.make	17 Jun 2008 17:18:56 -0000	1.15
@@ -17,7 +17,14 @@ endif
 
 DEV_CPPFLAGS = $(STDFD_DEV_CPPFLAGS) $(STDDEV_DEV_CPPFLAGS)
 
+if WITH_THREAD_MODEL_POSIX
+THREAD_MODEL_POSIX_COMPILER_FLAGS=-pthread
+else
+THREAD_MODEL_POSIX_COMPILER_FLAGS=
+endif
+
 AM_CPPFLAGS = \
+	$(THREAD_MODEL_POSIX_COMPILER_FLAGS) \
 	$(TRACING) \
 	$(AUTOMOUNT) $(ZERO_SUM_MEMORY) $(DEV_CPPFLAGS) $(SOCKETS_CPPFLAGS) \
 	$(DEFER_INIT_CWD) $(SYSIO_LABEL_NAMES) $(_HAVE_STATVFS) \

Index: configure.in
===================================================================
RCS file: /cvsroot/libsysio/libsysio/configure.in,v
retrieving revision 1.40
retrieving revision 1.41
diff -u -w -b -B -p -r1.40 -r1.41
--- configure.in	17 Jun 2008 15:17:30 -0000	1.40
+++ configure.in	17 Jun 2008 17:18:56 -0000	1.41
@@ -215,6 +215,23 @@ AC_ARG_WITH(alternate-symbols,
 	esac])
 AC_SUBST(SYSIO_LABEL_NAMES)
 
+AC_ARG_WITH(threads,
+  AC_HELP_STRING([--with-threads@<:@=<model>@:>@],
+    [Enable thread-safe operation via named model]),
+  [	case "${withval}" in
+	 yes|posix) AC_DEFINE(THREAD_MODEL_POSIX);;
+	 no) ;;
+	 *) AC_MSG_ERROR(bad value ${withval} for --with-threads) ;;
+	esac],
+  [with_threads=no])
+if test x$with_threads = xyes; then
+	with_threads=posix
+fi
+if test x$with_threads = xposix; then
+	AC_DEFINE(THREAD_MODEL_POSIX)
+fi
+AM_CONDITIONAL(WITH_THREAD_MODEL_POSIX, test x$with_threads = xposix)
+
 # We keep the original values in `$config_*' and never modify them, so we
 # can write them unchanged into config.make.  Everything else uses
 # $machine, $vendor, and $os, and changes them whenever convenient.