mirror of
https://github.com/xen-project/xen.git
synced 2026-10-29 02:30:03 +01:00
Daniel De Graaf
1a16a3351f
This library implements a bidirectional communication interface between applications in different domains, similar to unix sockets. Data can be sent using the byte-oriented libvchan_read/libvchan_write or the packet-oriented libvchan_recv/libvchan_send. Channel setup is done using a client-server model; domain IDs and a port number must be negotiated prior to initialization. The server allocates memory for the shared pages and determines the sizes of the communication rings (which may span multiple pages, although the default places rings and control within a single page). With properly sized rings, testing has shown that this interface provides speed comparable to pipes within a single Linux domain; it is significantly faster than network-based communication. Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
112 lines
3.5 KiB
Makefile
112 lines
3.5 KiB
Makefile
# -*- mode: Makefile; -*-
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# `all' is the default target
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all:
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include $(XEN_ROOT)/Config.mk
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export _INSTALL := $(INSTALL)
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INSTALL = $(XEN_ROOT)/tools/cross-install
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XEN_INCLUDE = $(XEN_ROOT)/tools/include
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XEN_LIBXC = $(XEN_ROOT)/tools/libxc
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XEN_XENLIGHT = $(XEN_ROOT)/tools/libxl
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XEN_XENSTORE = $(XEN_ROOT)/tools/xenstore
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XEN_LIBXENSTAT = $(XEN_ROOT)/tools/xenstat/libxenstat/src
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XEN_BLKTAP2 = $(XEN_ROOT)/tools/blktap2
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XEN_LIBVCHAN = $(XEN_ROOT)/tools/libvchan
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CFLAGS_xeninclude = -I$(XEN_INCLUDE)
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CFLAGS_libxenctrl = -I$(XEN_LIBXC) $(CFLAGS_xeninclude)
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LDLIBS_libxenctrl = $(XEN_LIBXC)/libxenctrl.so
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SHLIB_libxenctrl = -Wl,-rpath-link=$(XEN_LIBXC)
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CFLAGS_libxenguest = -I$(XEN_LIBXC) $(CFLAGS_xeninclude)
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LDLIBS_libxenguest = $(XEN_LIBXC)/libxenguest.so
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SHLIB_libxenguest = -Wl,-rpath-link=L$(XEN_LIBXC)
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CFLAGS_libxenstore = -I$(XEN_XENSTORE) $(CFLAGS_xeninclude)
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LDLIBS_libxenstore = $(XEN_XENSTORE)/libxenstore.so
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SHLIB_libxenstore = -Wl,-rpath-link=$(XEN_XENSTORE)
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CFLAGS_libxenstat = -I$(XEN_LIBXENSTAT)
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LDLIBS_libxenstat = $(SHLIB_libxenctrl) $(SHLIB_libxenstore) $(XEN_LIBXENSTAT)/libxenstat.so
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SHLIB_libxenstat = -Wl,-rpath-link=$(XEN_LIBXENSTAT)
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CFLAGS_libxenvchan = -I$(XEN_LIBVCHAN)
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LDLIBS_libxenvchan = $(SHLIB_libxenctrl) $(SHLIB_libxenstore) -L$(XEN_LIBVCHAN) -lxenvchan
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SHLIB_libxenvchan = -Wl,-rpath-link=$(XEN_LIBVCHAN)
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ifeq ($(CONFIG_Linux),y)
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LIBXL_BLKTAP = y
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else
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LIBXL_BLKTAP = n
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endif
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ifeq ($(LIBXL_BLKTAP),y)
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CFLAGS_libblktapctl = -I$(XEN_BLKTAP2)/control -I$(XEN_BLKTAP2)/include $(CFLAGS_xeninclude)
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LDLIBS_libblktapctl = -L$(XEN_BLKTAP2)/control -lblktapctl
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SHLIB_libblktapctl = -Wl,-rpath-link=$(XEN_BLKTAP2)/control
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else
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CFLAGS_libblktapctl =
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LDLIBS_libblktapctl =
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SHLIB_libblktapctl =
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endif
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CFLAGS_libxenlight = -I$(XEN_XENLIGHT) $(CFLAGS_libxenctrl) $(CFLAGS_xeninclude)
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LDLIBS_libxenlight = $(XEN_XENLIGHT)/libxenlight.so $(SHLIB_libxenctrl) $(SHLIB_libxenstore) $(SHLIB_libblktapctl)
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SHLIB_libxenlight = -Wl,-rpath-link=$(XEN_XENLIGHT)
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CFLAGS += -D__XEN_TOOLS__
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# Get gcc to generate the dependencies for us.
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CFLAGS += -MMD -MF .$(@F).d
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DEPS = .*.d
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ifneq ($(XEN_OS),NetBSD)
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# Enable implicit LFS support *and* explicit LFS names.
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CFLAGS += $(shell getconf LFS_CFLAGS)
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CFLAGS += -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
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LDFLAGS += $(shell getconf LFS_LDFLAGS)
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endif
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# 32-bit x86 does not perform well with -ve segment accesses on Xen.
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CFLAGS-$(CONFIG_X86_32) += $(call cc-option,$(CC),-mno-tls-direct-seg-refs)
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CFLAGS += $(CFLAGS-y)
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# Require GCC v3.4+ (to avoid issues with alignment constraints in Xen headers)
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check-$(CONFIG_X86) = $(call cc-ver-check,CC,0x030400,\
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"Xen requires at least gcc-3.4")
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$(eval $(check-y))
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_PYTHON_PATH := $(shell which $(PYTHON))
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PYTHON_PATH ?= $(_PYTHON_PATH)
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INSTALL_PYTHON_PROG = \
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$(XEN_ROOT)/tools/python/install-wrap "$(PYTHON_PATH)" $(INSTALL_PROG)
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%.opic: %.c
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$(CC) $(CPPFLAGS) -DPIC $(CFLAGS) $(CFLAGS_$*.opic) -fPIC -c -o $@ $<
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%.o: %.c
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$(CC) $(CPPFLAGS) $(CFLAGS) $(CFLAGS_$*.o) -c -o $@ $<
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%.o: %.cc
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$(CC) $(CPPFLAGS) $(CXXFLAGS) $(CXXFLAGS_$*.o) -c -o $@ $<
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%.o: %.S
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$(CC) $(CFLAGS) $(CFLAGS_$*.o) -c $< -o $@
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%.opic: %.S
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$(CC) $(CPPFLAGS) -DPIC $(CFLAGS) $(CFLAGS.opic) -fPIC -c -o $@ $<
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subdirs-all subdirs-clean subdirs-install subdirs-distclean: .phony
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@set -e; for subdir in $(SUBDIRS) $(SUBDIRS-y); do \
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$(MAKE) subdir-$(patsubst subdirs-%,%,$@)-$$subdir; \
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done
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subdir-all-% subdir-clean-% subdir-install-%: .phony
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$(MAKE) -C $* $(patsubst subdir-%-$*,%,$@)
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subdir-distclean-%: .phony
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$(MAKE) -C $* clean
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