Merge pull request #57 from tmakatos/v0.7-devel-static
Allow 3rd party emitters to be statically compiled
This commit is contained in:
Joe Thornber
commit
036883b271
18
Makefile.in
18
Makefile.in
@ -92,7 +92,6 @@ SOURCE=\
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thin-provisioning/restore_emitter.cc \
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thin-provisioning/rmap_visitor.cc \
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thin-provisioning/superblock.cc \
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thin-provisioning/shared_library_emitter.cc \
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thin-provisioning/thin_check.cc \
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thin-provisioning/thin_delta.cc \
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thin-provisioning/thin_dump.cc \
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@ -119,10 +118,23 @@ ifeq ("@DEVTOOLS@", "yes")
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SOURCE+=$(DEVTOOLS_SOURCE)
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endif
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ifeq ("@STATIC@", "yes")
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SOURCE += thin-provisioning/static_library_emitter.cc
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else
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SOURCE += thin-provisioning/shared_library_emitter.cc
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endif
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CC:=@CC@
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CXX:=@CXX@
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STRIP:=@STRIP@
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OBJECTS:=$(subst .cc,.o,$(SOURCE))
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# FIXME OBJECTS += $(PLUGIN_LIBS) doesn't work, probably because it's empty at
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# the time of use?
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ifeq ("@STATIC@", "yes")
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OBJECTS += contrib/*.a
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endif
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TOP_DIR:=@top_srcdir@
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TOP_BUILDDIR:=@top_builddir@
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CFLAGS+=-g -Wall -O3 -fPIC
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@ -150,6 +162,10 @@ else
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CXXLIB+=-lstdc++
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endif
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ifeq ("@STATIC@", "yes")
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LDFLAGS+=-static
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endif
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INSTALL:=@INSTALL@
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PREFIX:=@prefix@
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BINDIR:=$(DESTDIR)$(PREFIX)/sbin
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@ -153,6 +153,14 @@ AC_ARG_ENABLE(static_cxx,
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STATIC_CXX=$enableval, STATIC_CXX=no)
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AC_MSG_RESULT($STATIC_CXX)
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################################################################################
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dnl -- Enable static linking.
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AC_MSG_CHECKING(whether to statically link)
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AC_ARG_ENABLE(static,
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AC_HELP_STRING(--enable-static, [enable static link]),
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STATIC=$enableval, STATIC=no)
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AC_MSG_RESULT($STATIC)
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################################################################################
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dnl -- Check for getopt
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AC_CHECK_HEADERS(getopt.h, AC_DEFINE([HAVE_GETOPTLONG], 1, [Define to 1 if getopt_long is available.]))
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@ -182,6 +190,7 @@ AC_SUBST(TESTING)
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AC_SUBST(THIN_PROVISIONING_TOOLS_VERSION)
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AC_SUBST(STATIC_CXX)
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AC_SUBST(DEVTOOLS)
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AC_SUBST(STATIC)
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################################################################################
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dnl -- First and last lines should not contain files to generate in order to
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@ -1,20 +1,24 @@
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PLUGIN_LIBS= \
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contrib/thin_sexp_emitter.a \
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contrib/tmakatos_emitter.a \
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contrib/ewheeler_emitter.a
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PLUGINS=\
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contrib/thin_sexp_emitter.so \
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contrib/tmakatos_emitter.so \
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contrib/ewheeler_emitter.so
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contrib: $(PLUGINS)
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contrib: $(PLUGINS) $(PLUGIN_LIBS)
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contrib/thin_sexp_emitter.so: contrib/thin_sexp_emitter.o
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contrib/%.o: contrib/%.cc
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$(V)echo " [CC] $@"
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$(V)$(CC) $^ -o $@
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contrib/%.a: contrib/%.o
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$(V)echo " [AR] $@"
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$(V)ar rcs $@ $^
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contrib/%.so: contrib/%.a
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$(V)echo " [LD] $@"
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$(V)$(CC) -shared -Wl,-soname,thin_sexp_emitter.so -o $@ $<
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contrib/tmakatos_emitter.so: contrib/tmakatos_emitter.o
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$(V)echo " [LD] $@"
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$(V)$(CC) -shared -Wl,-soname,tmakatos_emitter.so -o $@ $<
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contrib/ewheeler_emitter.so: contrib/ewheeler_emitter.o
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$(V)echo " [LD] $@"
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$(V)$(CC) -shared -Wl,-soname,ewheeler_emitter.so -o $@ $<
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$(V)$(CC) -shared -Wl,-soname,$@ -o $@ $<
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@ -1,4 +1,5 @@
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#include "thin-provisioning/emitter.h"
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#include "contrib/tmakatos_emitter.h"
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#include <iostream>
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#include <climits>
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@ -8,7 +9,7 @@ using namespace thin_provisioning;
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//----------------------------------------------------------------
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namespace {
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namespace tmakatos_emitter {
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template <typename T>
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std::ostream &operator << (ostream &out, boost::optional<T> const &maybe) {
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if (maybe)
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@ -20,131 +21,108 @@ namespace {
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//------------------------------------------------
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// binary generator
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//------------------------------------------------
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class binary_emitter : public emitter {
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public:
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binary_emitter(ostream &out)
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: out_(out) {
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}
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binary_emitter::binary_emitter(ostream &out): out_(out) {
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}
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void begin_superblock(string const &uuid,
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uint64_t time,
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uint64_t trans_id,
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boost::optional<uint32_t> flags,
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boost::optional<uint32_t> version,
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uint32_t data_block_size,
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uint64_t nr_data_blocks,
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boost::optional<uint64_t> metadata_snap) {
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}
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void binary_emitter::begin_superblock(string const &uuid,
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uint64_t time,
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uint64_t trans_id,
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boost::optional<uint32_t> flags,
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boost::optional<uint32_t> version,
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uint32_t data_block_size,
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uint64_t nr_data_blocks,
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boost::optional<uint64_t> metadata_snap) {
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}
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void end_superblock() {
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}
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void binary_emitter::end_superblock() {
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}
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void begin_device(uint32_t dev_id,
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uint64_t mapped_blocks,
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uint64_t trans_id,
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uint64_t creation_time,
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uint64_t snap_time) {
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cur = 0;
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bitmap = 0;
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}
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void binary_emitter::begin_device(uint32_t dev_id,
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uint64_t mapped_blocks,
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uint64_t trans_id,
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uint64_t creation_time,
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uint64_t snap_time) {
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cur = 0;
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bitmap = 0;
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}
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void end_device() {
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emit_bmp(true);
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}
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void binary_emitter::end_device() {
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emit_bmp(true);
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}
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void begin_named_mapping(string const &name) { }
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void binary_emitter::begin_named_mapping(string const &name) { }
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void end_named_mapping() { }
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void binary_emitter::end_named_mapping() { }
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void identifier(string const &name) { }
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void range_map(uint64_t origin_begin, uint64_t, uint32_t,
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uint64_t len) {
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void binary_emitter::identifier(string const &name) { }
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uint64_t n = origin_begin / unit;
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uint64_t i;
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void binary_emitter::range_map(uint64_t origin_begin, uint64_t, uint32_t,
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uint64_t len) {
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assert(n >= cur);
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assert(len > 0);
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uint64_t n = origin_begin / unit;
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uint64_t i;
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/*
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* Cover the gap between the last emitted unit and the current one.
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*/
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if (n > cur)
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do { emit_bmp(); } while (cur < n);
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/*
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* Emit partial unit.
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*/
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if (origin_begin & (unit - 1)) {
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const uint64_t j = min(len,
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(origin_begin & ~(unit - 1)) + unit - origin_begin);
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for (i = origin_begin; i < origin_begin + j; i++)
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bitmap |= 1ULL << (i & (unit - 1));
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if (j == len)
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return;
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emit_bmp();
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len -= j;
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origin_begin = i;
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}
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/*
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* Emit full units until end.
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*/
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n = (origin_begin + len) / unit;
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while (cur < n) {
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bitmap = ~0;
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emit_bmp();
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len -= unit;
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}
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origin_begin = cur * unit;
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/*
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* Emit final unit.
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*/
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for (i = origin_begin; i < origin_begin + len; i++)
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bitmap |= 1ULL << (i & (unit - 1));
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}
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void single_map(uint64_t origin_block, uint64_t, uint32_t) {
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range_map(origin_block, 0, 0, 1);
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}
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private:
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ostream &out_;
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/**
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* The entire virtual block allocation bitmap is segmented into 64-bit
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* sub-bitmaps (units).
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*/
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uint64_t bitmap;
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assert(n >= cur);
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assert(len > 0);
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/*
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* Pointer to the current sub-bitmap (unit) that has not yet been
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* emitted.
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* Cover the gap between the last emitted unit and the current one.
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*/
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uint64_t cur;
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if (n > cur)
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do { emit_bmp(); } while (cur < n);
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/**
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* Unit (sub-bitmap) size. Must be a power of 2.
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/*
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* Emit partial unit.
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*/
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static const size_t unit = sizeof bitmap * CHAR_BIT;
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if (origin_begin & (unit - 1)) {
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const uint64_t j = min(len,
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(origin_begin & ~(unit - 1)) + unit - origin_begin);
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for (i = origin_begin; i < origin_begin + j; i++)
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bitmap |= 1ULL << (i & (unit - 1));
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if (j == len)
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return;
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void emit_bmp(bool omit_if_zero = false) {
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if (!bitmap && omit_if_zero)
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out_.write((const char*)&bitmap, sizeof bitmap);
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bitmap = 0;
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cur++;
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emit_bmp();
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len -= j;
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origin_begin = i;
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}
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};
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/*
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* Emit full units until end.
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*/
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n = (origin_begin + len) / unit;
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while (cur < n) {
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bitmap = ~0;
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emit_bmp();
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len -= unit;
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}
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origin_begin = cur * unit;
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/*
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* Emit final unit.
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*/
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for (i = origin_begin; i < origin_begin + len; i++)
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bitmap |= 1ULL << (i & (unit - 1));
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}
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void binary_emitter::single_map(uint64_t origin_block, uint64_t, uint32_t) {
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range_map(origin_block, 0, 0, 1);
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}
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void binary_emitter::emit_bmp(bool omit_if_zero) {
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if (bitmap || !omit_if_zero)
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out_.write((const char*)&bitmap, sizeof bitmap);
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bitmap = 0;
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cur++;
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}
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}
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//----------------------------------------------------------------
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extern "C" {
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emitter::ptr create_emitter(ostream &out) {
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return emitter::ptr(new binary_emitter(out));
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return emitter::ptr(new tmakatos_emitter::binary_emitter(out));
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}
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}
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69
contrib/tmakatos_emitter.h
Normal file
69
contrib/tmakatos_emitter.h
Normal file
@ -0,0 +1,69 @@
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#ifndef _TMAKATOS_EMITTER_H_
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#define _TMAKATOS_EMITTER_H_
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#include "thin-provisioning/emitter.h"
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#include <climits>
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using namespace std;
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using namespace thin_provisioning;
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namespace tmakatos_emitter {
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class binary_emitter : public emitter {
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public:
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binary_emitter(ostream &out);
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void begin_superblock(string const &uuid,
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uint64_t time,
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uint64_t trans_id,
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boost::optional<uint32_t> flags,
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boost::optional<uint32_t> version,
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uint32_t data_block_size,
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uint64_t nr_data_blocks,
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boost::optional<uint64_t> metadata_snap);
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void end_superblock();
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void begin_device(uint32_t dev_id,
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uint64_t mapped_blocks,
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uint64_t trans_id,
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uint64_t creation_time,
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uint64_t snap_time);
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void end_device();
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void begin_named_mapping(string const &name);
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void end_named_mapping();
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void identifier(string const &name);
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void range_map(uint64_t origin_begin, uint64_t, uint32_t,
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uint64_t len);
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void single_map(uint64_t origin_block, uint64_t, uint32_t);
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private:
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ostream &out_;
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/**
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* The entire virtual block allocation bitmap is segmented into 64-bit
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* sub-bitmaps (units).
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*/
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uint64_t bitmap;
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/*
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* Pointer to the current sub-bitmap (unit) that has not yet been
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* emitted.
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*/
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uint64_t cur;
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/**
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* Unit (sub-bitmap) size. Must be a power of 2.
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*/
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static const size_t unit = sizeof bitmap * CHAR_BIT;
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void emit_bmp(bool omit_if_zero = false);
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};
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}
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#endif /* _TMAKATOS_EMITTER_H_ */
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@ -21,7 +21,8 @@ persistent_data::get_nr_blocks(string const &path, sector_t block_size)
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int r = ::stat(path.c_str(), &info);
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if (r)
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throw runtime_error("Couldn't stat dev path");
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throw runtime_error("Couldn't stat dev path " + path + ": " +
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strerror(errno));
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if (S_ISREG(info.st_mode) && info.st_size)
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nr_blocks = div_up<block_address>(info.st_size, block_size);
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22
thin-provisioning/static_library_emitter.cc
Normal file
22
thin-provisioning/static_library_emitter.cc
Normal file
@ -0,0 +1,22 @@
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#include "thin-provisioning/shared_library_emitter.h"
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#include <stdexcept>
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#include "contrib/tmakatos_emitter.h"
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using namespace std;
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using namespace thin_provisioning;
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//----------------------------------------------------------------
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emitter::ptr
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thin_provisioning::create_custom_emitter(string const &shared_lib, ostream &out)
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{
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if (shared_lib != "tmakatos_emitter.so")
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throw runtime_error(shared_lib + ": no such emitter");
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cout << "XXX creating tmakatos_emitter" << endl;
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cout << flush;
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return emitter::ptr(new tmakatos_emitter::binary_emitter(out));
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}
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//----------------------------------------------------------------
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