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asterisk/main/Makefile
Russell Bryant cba19c8a67 Convert the ast_channel data structure over to the astobj2 framework. 
There is a lot that could be said about this, but the patch is a big 
improvement for performance, stability, code maintainability, 
and ease of future code development.

The channel list is no longer an unsorted linked list.  The main container 
for channels is an astobj2 hash table.  All of the code related to searching 
for channels or iterating active channels has been rewritten.  Let n be 
the number of active channels.  Iterating the channel list has gone from 
O(n^2) to O(n).  Searching for a channel by name went from O(n) to O(1).  
Searching for a channel by extension is still O(n), but uses a new method 
for doing so, which is more efficient.

The ast_channel object is now a reference counted object.  The benefits 
here are plentiful.  Some benefits directly related to issues in the 
previous code include:

1) When threads other than the channel thread owning a channel wanted 
   access to a channel, it had to hold the lock on it to ensure that it didn't 
   go away.  This is no longer a requirement.  Holding a reference is 
   sufficient.

2) There are places that now require less dealing with channel locks.

3) There are places where channel locks are held for much shorter periods 
   of time.

4) There are places where dealing with more than one channel at a time becomes 
   _MUCH_ easier.  ChanSpy is a great example of this.  Writing code in the 
   future that deals with multiple channels will be much easier.

Some additional information regarding channel locking and reference count 
handling can be found in channel.h, where a new section has been added that 
discusses some of the rules associated with it.

Mark Michelson also assisted with the development of this patch.  He did the 
conversion of ChanSpy and introduced a new API, ast_autochan, which makes it 
much easier to deal with holding on to a channel pointer for an extended period 
of time and having it get automatically updated if the channel gets masqueraded.
Mark was also a huge help in the code review process.

Thanks to David Vossel for his assistance with this branch, as well.  David 
did the conversion of the DAHDIScan application by making it become a wrapper 
for ChanSpy internally.

The changes come from the svn/asterisk/team/russell/ast_channel_ao2 branch.

Review: http://reviewboard.digium.com/r/203/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@190423 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2009-04-24 14:04:26 +00:00

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Makefile
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#
# Asterisk -- A telephony toolkit for Linux.
#
# Makefile to build main Asterisk binary
#
# Copyright (C) 1999-2006, Digium, Inc.
#
# Mark Spencer <markster@digium.com>
#
# This program is free software, distributed under the terms of
# the GNU General Public License
#
-include $(ASTTOPDIR)/menuselect.makeopts $(ASTTOPDIR)/menuselect.makedeps $(ASTTOPDIR)/makeopts.embed_rules
all: asterisk
include $(ASTTOPDIR)/Makefile.moddir_rules
OBJS= tcptls.o io.o sched.o logger.o frame.o loader.o config.o channel.o \
translate.o file.o pbx.o cli.o md5.o term.o heap.o \
ulaw.o alaw.o callerid.o fskmodem.o image.o app.o \
cdr.o tdd.o acl.o udptl.o manager.o asterisk.o \
dsp.o chanvars.o indications.o autoservice.o db.o privacy.o \
astmm.o astfd.o enum.o srv.o dns.o aescrypt.o aestab.o aeskey.o \
utils.o plc.o jitterbuf.o dnsmgr.o devicestate.o \
netsock.o slinfactory.o ast_expr2.o ast_expr2f.o \
cryptostub.o sha1.o http.o fixedjitterbuf.o abstract_jb.o \
strcompat.o threadstorage.o dial.o event.o adsistub.o audiohook.o \
astobj2.o hashtab.o global_datastores.o version.o \
features.o taskprocessor.o timing.o datastore.o xml.o xmldoc.o \
strings.o bridging.o poll.o rtp_engine.o stun.o autochan.o
# we need to link in the objects statically, not as a library, because
# otherwise modules will not have them available if none of the static
# objects use it.
OBJS+=stdtime/localtime.o
# At the moment say.o is an optional component which can be overridden
# by a module.
OBJS+=say.o
AST_LIBS += $(OPENSSL_LIB)
AST_LIBS += $(BKTR_LIB)
AST_LIBS += $(LIBXML2_LIB)
ifneq ($(findstring $(OSARCH), linux-gnu uclinux linux-uclibc linux-gnueabi ),)
ifneq ($(findstring LOADABLE_MODULES,$(MENUSELECT_CFLAGS)),)
AST_LIBS+=-ldl
endif
ifneq (x$(CAP_LIB),x)
AST_LIBS+=$(CAP_LIB)
endif
AST_LIBS+=-lpthread $(EDITLINE_LIB) -lm -lresolv
else
AST_LIBS+=$(EDITLINE_LIB) -lm
endif
ifneq ($(findstring darwin,$(OSARCH)),)
AST_LIBS+=-lresolv
ifneq ($(findstring LOADABLE_MODULES,$(MENUSELECT_CFLAGS)),)
ASTLINK=-Wl,-dynamic
endif
else
# These are used for all but Darwin
ifneq ($(findstring LOADABLE_MODULES,$(MENUSELECT_CFLAGS)),)
ASTLINK+=-Wl,--export-dynamic
else
ASTLINK+=${GC_LDFLAGS}
endif
ifneq ($(findstring BSD,$(OSARCH)),)
LDFLAGS+=-L/usr/local/lib
endif
endif
ifeq ($(OSARCH),FreeBSD)
# -V is understood by BSD Make, not by GNU make.
BSDVERSION=$(shell make -V OSVERSION -f /usr/share/mk/bsd.port.subdir.mk)
AST_LIBS+=$(shell if test $(BSDVERSION) -lt 502102 ; then echo "-lc_r"; else echo "-pthread"; fi)
AST_LIBS+=-lcrypto
endif
ifneq ($(findstring $(OSARCH), mingw32 cygwin ),)
AST_LIBS+=-lminires -ldl
ASTLINK+= -shared -Wl,--out-implib,libasterisk.a
endif
ifeq ($(OSARCH),NetBSD)
AST_LIBS+=-lpthread -lcrypto -lm -L/usr/pkg/lib $(EDITLINE_LIB)
endif
ifeq ($(OSARCH),OpenBSD)
AST_LIBS+=-lcrypto -lpthread -lm $(EDITLINE_LIB)
endif
ifeq ($(OSARCH),SunOS)
AST_LIBS+=-lpthread -ldl -lnsl -lsocket -lresolv -L/opt/ssl/lib -L/usr/local/ssl/lib
ASTLINK=
endif
ifneq ($(findstring USE_HOARD_ALLOCATOR,$(MENUSELECT_CFLAGS)),)
ifneq ($(HOARD_LIB),)
AST_LIBS+=$(HOARD_LIB)
endif
endif
ifeq ($(GNU_LD),1)
ASTLINK+=-Wl,--version-script,asterisk.exports
endif
CHECK_SUBDIR: # do nothing, just make sure that we recurse in the subdir/
editline/libedit.a: CHECK_SUBDIR
cd editline && test -f config.h || CFLAGS="$(PTHREAD_CFLAGS) $(subst $(ASTTOPDIR),../../,$(ASTCFLAGS:-Werror=))" LDFLAGS="$(ASTLDFLAGS)" ./configure --build=$(BUILD_PLATFORM) --host=$(HOST_PLATFORM) --with-ncurses=$(NCURSES_DIR) --with-curses=$(CURSES_DIR) --with-termcap=$(TERMCAP_DIR) --with-tinfo=$(TINFO_DIR)
$(MAKE) -C editline libedit.a
db1-ast/libdb1.a: CHECK_SUBDIR
CFLAGS="$(subst $(ASTTOPDIR),../../,$(ASTCFLAGS))" LDFLAGS="$(ASTLDFLAGS)" $(MAKE) -C db1-ast libdb1.a
ast_expr2.c ast_expr2.h:
bison -o $@ -d --name-prefix=ast_yy ast_expr2.y
ast_expr2f.c:
flex -o $@ ast_expr2.fl
sed 's@#if __STDC_VERSION__ >= 199901L@#if !defined __STDC_VERSION__ || __STDC_VERSION__ >= 199901L@' $@ > $@.fix
echo "#include \"asterisk.h\"" > $@
echo >> $@
cat $@.fix >> $@
rm $@.fix
ast_expr2f.o: ASTCFLAGS+=-Wno-unused
testexpr2: ast_expr2f.c ast_expr2.c ast_expr2.h
$(CC) -g -c -Iinclude -DSTANDALONE ast_expr2f.c
$(CC) -g -c -Iinclude -DSTANDALONE ast_expr2.c
$(CC) -g -o testexpr2 ast_expr2f.o ast_expr2.o -lm
rm ast_expr2.o ast_expr2f.o
ifneq ($(findstring ENABLE_UPLOADS,$(MENUSELECT_CFLAGS)),)
http.o: ASTCFLAGS+=$(GMIME_INCLUDE)
endif
stdtime/localtime.o: ASTCFLAGS+=$(AST_NO_STRICT_OVERFLOW) -Wno-format-nonliteral
AST_EMBED_LDSCRIPTS:=$(sort $(EMBED_LDSCRIPTS))
AST_EMBED_LDFLAGS:=$(foreach dep,$(EMBED_LDFLAGS),$(value $(dep)))
AST_EMBED_LIBS:=$(foreach dep,$(EMBED_LIBS),$(value $(dep)))
OBJS:=$(sort $(OBJS))
ifneq ($(wildcard ../channels/h323/Makefile.ast),)
include ../channels/h323/Makefile.ast
else
H323LDFLAGS=
H323LDLIBS=
endif
ifneq ($(findstring $(OSARCH), mingw32 cygwin ),)
MAIN_TGT:=asterisk.dll
asterisk: cygload
mv cygload.exe asterisk.exe
cygload: asterisk.dll
else
MAIN_TGT:=asterisk
endif
ifneq ($(findstring ENABLE_UPLOADS,$(MENUSELECT_CFLAGS)),)
GMIMELDFLAGS+=$(GMIME_LIB)
endif
$(MAIN_TGT): $(OBJS) editline/libedit.a db1-ast/libdb1.a $(AST_EMBED_LDSCRIPTS) asterisk.exports
@$(CC) -c -o buildinfo.o $(ASTCFLAGS) buildinfo.c
$(ECHO_PREFIX) echo " [LD] $(OBJS) editline/libedit.a db1-ast/libdb1.a $(AST_EMBED_LDSCRIPTS) -> $@"
ifneq ($(findstring chan_h323,$(MENUSELECT_CHANNELS)),)
$(CMD_PREFIX) $(CC) $(STATIC_BUILD) -o $@ $(ASTLINK) $(AST_EMBED_LDFLAGS) $(ASTLDFLAGS) $(OBJS) editline/libedit.a db1-ast/libdb1.a $(AST_EMBED_LDSCRIPTS) buildinfo.o $(AST_LIBS) $(AST_EMBED_LIBS) $(GMIMELDFLAGS)
else
$(CMD_PREFIX) $(CXX) $(STATIC_BUILD) -o $@ $(ASTLINK) $(AST_EMBED_LDFLAGS) $(ASTLDFLAGS) $(H323LDFLAGS) $(OBJS) editline/libedit.a db1-ast/libdb1.a $(AST_EMBED_LDSCRIPTS) buildinfo.o $(AST_LIBS) $(AST_EMBED_LIBS) $(H323LDLIBS) $(GMIMELDFLAGS)
endif
clean::
rm -f asterisk
rm -f db1-ast/.*.d
@if [ -f editline/Makefile ]; then $(MAKE) -C editline distclean ; fi
@$(MAKE) -C db1-ast clean
@$(MAKE) -C stdtime clean
rm -f libresample/src/*.o
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