diff options
author | cvs2svn <> | 2012-12-21 01:10:28 +0400 |
---|---|---|
committer | cvs2svn <> | 2012-12-21 01:10:28 +0400 |
commit | d2e568e10ab953bacedd6406558b2d7ed707cc36 (patch) | |
tree | 543b59ca96723fb02b1337a37fa7b3fcd07c20da /winsup/cygwin/select.cc | |
parent | f2d223bd0fa6fdf1a0328d5bfcc83140f0e1150e (diff) |
This commit was manufactured by cvs2svn to create tag 'newlib-2_0_0'.newlib-2_0_0
Sprout from master 2012-12-20 21:10:27 UTC Jeff Johnston <jjohnstn@redhat.com> ''
Cherrypick from cygnus 1999-05-03 07:29:06 UTC Richard Henderson <rth@redhat.com> '19990502 sourceware import':
README
config/mt-d30v
config/mt-ospace
etc/add-log.el
etc/add-log.vi
etc/configbuild.ein
etc/configbuild.fig
etc/configbuild.jin
etc/configbuild.tin
etc/configdev.ein
etc/configdev.fig
etc/configdev.jin
etc/configdev.tin
makefile.vms
Delete:
djunpack.bat
include/COPYING
include/COPYING3
include/ChangeLog
include/ChangeLog-9103
include/MAINTAINERS
include/alloca-conf.h
include/ansidecl.h
include/aout/ChangeLog
include/aout/adobe.h
include/aout/aout64.h
include/aout/ar.h
include/aout/dynix3.h
include/aout/encap.h
include/aout/host.h
include/aout/hp.h
include/aout/hp300hpux.h
include/aout/hppa.h
include/aout/ranlib.h
include/aout/reloc.h
include/aout/stab.def
include/aout/stab_gnu.h
include/aout/sun4.h
include/bfdlink.h
include/binary-io.h
include/bout.h
include/cgen/ChangeLog
include/cgen/basic-modes.h
include/cgen/basic-ops.h
include/cgen/bitset.h
include/coff/ChangeLog
include/coff/ChangeLog-9103
include/coff/alpha.h
include/coff/apollo.h
include/coff/arm.h
include/coff/aux-coff.h
include/coff/ecoff.h
include/coff/external.h
include/coff/go32exe.h
include/coff/h8300.h
include/coff/h8500.h
include/coff/i386.h
include/coff/i860.h
include/coff/i960.h
include/coff/ia64.h
include/coff/internal.h
include/coff/m68k.h
include/coff/m88k.h
include/coff/mcore.h
include/coff/mips.h
include/coff/mipspe.h
include/coff/or32.h
include/coff/pe.h
include/coff/powerpc.h
include/coff/rs6000.h
include/coff/rs6k64.h
include/coff/sh.h
include/coff/sparc.h
include/coff/sym.h
include/coff/symconst.h
include/coff/ti.h
include/coff/tic30.h
include/coff/tic4x.h
include/coff/tic54x.h
include/coff/tic80.h
include/coff/w65.h
include/coff/we32k.h
include/coff/x86_64.h
include/coff/xcoff.h
include/coff/z80.h
include/coff/z8k.h
include/demangle.h
include/dis-asm.h
include/dwarf2.def
include/dwarf2.h
include/dyn-string.h
include/elf/ChangeLog
include/elf/ChangeLog-9103
include/elf/aarch64.h
include/elf/alpha.h
include/elf/arc.h
include/elf/arm.h
include/elf/avr.h
include/elf/bfin.h
include/elf/common.h
include/elf/cr16.h
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include/elf/cris.h
include/elf/crx.h
include/elf/d10v.h
include/elf/d30v.h
include/elf/dlx.h
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include/elf/epiphany.h
include/elf/external.h
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include/elf/microblaze.h
include/elf/mips.h
include/elf/mmix.h
include/elf/mn10200.h
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include/elf/moxie.h
include/elf/msp430.h
include/elf/mt.h
include/elf/openrisc.h
include/elf/or32.h
include/elf/pj.h
include/elf/ppc.h
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include/elf/reloc-macros.h
include/elf/rl78.h
include/elf/rx.h
include/elf/s390.h
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include/elf/sh.h
include/elf/sparc.h
include/elf/spu.h
include/elf/tic6x-attrs.h
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include/elf/tilegx.h
include/elf/tilepro.h
include/elf/v850.h
include/elf/vax.h
include/elf/vxworks.h
include/elf/x86-64.h
include/elf/xc16x.h
include/elf/xgate.h
include/elf/xstormy16.h
include/elf/xtensa.h
include/fibheap.h
include/filenames.h
include/floatformat.h
include/fnmatch.h
include/fopen-bin.h
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include/fopen-vms.h
include/gdb/ChangeLog
include/gdb/callback.h
include/gdb/fileio.h
include/gdb/gdb-index.h
include/gdb/remote-sim.h
include/gdb/signals.def
include/gdb/signals.h
include/gdb/sim-arm.h
include/gdb/sim-bfin.h
include/gdb/sim-cr16.h
include/gdb/sim-d10v.h
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include/gdb/sim-lm32.h
include/gdb/sim-m32c.h
include/gdb/sim-ppc.h
include/gdb/sim-rl78.h
include/gdb/sim-rx.h
include/gdb/sim-sh.h
include/gdbm.h
include/getopt.h
include/hashtab.h
include/hp-symtab.h
include/ieee.h
include/leb128.h
include/libiberty.h
include/lto-symtab.h
include/mach-o/ChangeLog
include/mach-o/arm.h
include/mach-o/codesign.h
include/mach-o/external.h
include/mach-o/loader.h
include/mach-o/reloc.h
include/mach-o/x86-64.h
include/md5.h
include/nlm/ChangeLog
include/nlm/alpha-ext.h
include/nlm/common.h
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include/nlm/i386-ext.h
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include/nlm/ppc-ext.h
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include/oasys.h
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include/opcode/ChangeLog
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include/opcode/d10v.h
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include/opcode/dlx.h
include/opcode/h8300.h
include/opcode/hppa.h
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include/opcode/i860.h
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include/opcode/m68hc11.h
include/opcode/m68k.h
include/opcode/m88k.h
include/opcode/mips.h
include/opcode/mmix.h
include/opcode/mn10200.h
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include/opcode/moxie.h
include/opcode/msp430.h
include/opcode/np1.h
include/opcode/ns32k.h
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include/opcode/pdp11.h
include/opcode/pj.h
include/opcode/pn.h
include/opcode/ppc.h
include/opcode/pyr.h
include/opcode/rl78.h
include/opcode/rx.h
include/opcode/s390.h
include/opcode/score-datadep.h
include/opcode/score-inst.h
include/opcode/sparc.h
include/opcode/spu-insns.h
include/opcode/spu.h
include/opcode/tahoe.h
include/opcode/tic30.h
include/opcode/tic4x.h
include/opcode/tic54x.h
include/opcode/tic6x-control-registers.h
include/opcode/tic6x-insn-formats.h
include/opcode/tic6x-opcode-table.h
include/opcode/tic6x.h
include/opcode/tic80.h
include/opcode/tilegx.h
include/opcode/tilepro.h
include/opcode/v850.h
include/opcode/vax.h
include/opcode/xgate.h
include/os9k.h
include/partition.h
include/plugin-api.h
include/progress.h
include/safe-ctype.h
include/sha1.h
include/simple-object.h
include/som/ChangeLog
include/som/aout.h
include/som/clock.h
include/som/internal.h
include/som/lst.h
include/som/reloc.h
include/sort.h
include/splay-tree.h
include/symcat.h
include/timeval-utils.h
include/vms/ChangeLog
include/vms/dcx.h
include/vms/dmt.h
include/vms/dsc.h
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include/vms/eeom.h
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include/xregex.h
include/xregex2.h
include/xtensa-config.h
include/xtensa-isa-internal.h
include/xtensa-isa.h
winsup/COPYING
winsup/CYGWIN_LICENSE
winsup/ChangeLog
winsup/Makefile.common
winsup/Makefile.in
winsup/README
winsup/acinclude.m4
winsup/aclocal.m4
winsup/autogen.sh
winsup/c++wrap
winsup/ccwrap
winsup/config.guess
winsup/config.sub
winsup/configure
winsup/configure.ac
winsup/configure.cygwin
winsup/cygserver/ChangeLog
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winsup/cygserver/README
winsup/cygserver/aclocal.m4
winsup/cygserver/autogen.sh
winsup/cygserver/bsd_helper.cc
winsup/cygserver/bsd_helper.h
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winsup/cygserver/bsd_mutex.cc
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winsup/cygserver/client.cc
winsup/cygserver/configure
winsup/cygserver/configure.ac
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winsup/cygserver/cygserver.cc
winsup/cygserver/cygserver.conf
winsup/cygserver/msg.cc
winsup/cygserver/process.cc
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winsup/cygserver/sem.cc
winsup/cygserver/setpwd.cc
winsup/cygserver/shm.cc
winsup/cygserver/sysv_msg.cc
winsup/cygserver/sysv_sem.cc
winsup/cygserver/sysv_shm.cc
winsup/cygserver/threaded_queue.cc
winsup/cygserver/threaded_queue.h
winsup/cygserver/transport.cc
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winsup/cygserver/transport_pipes.cc
winsup/cygserver/transport_pipes.h
winsup/cygserver/woutsup.h
winsup/cygwin/ChangeLog
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winsup/cygwin/DevNotes
winsup/cygwin/Makefile.in
winsup/cygwin/ROADMAP
winsup/cygwin/acconfig.h
winsup/cygwin/aclocal.m4
winsup/cygwin/advapi32.cc
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winsup/cygwin/assert.cc
winsup/cygwin/autogen.sh
winsup/cygwin/autoload.cc
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winsup/cygwin/child_info.h
winsup/cygwin/collate.h
winsup/cygwin/config.h.in
winsup/cygwin/config/i386/profile.h
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winsup/cygwin/cygserver_shm.h
winsup/cygwin/cygthread.cc
winsup/cygwin/cygthread.h
winsup/cygwin/cygtls.cc
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winsup/cygwin/how-autoload-works.txt
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winsup/testsuite/winsup.api/ltp/readlink02.c
winsup/testsuite/winsup.api/ltp/readlink03.c
winsup/testsuite/winsup.api/ltp/rename01.c
winsup/testsuite/winsup.api/ltp/rename02.c
winsup/testsuite/winsup.api/ltp/rename08.c
winsup/testsuite/winsup.api/ltp/rename10.c
winsup/testsuite/winsup.api/ltp/rmdir01.c
winsup/testsuite/winsup.api/ltp/rmdir04.c
winsup/testsuite/winsup.api/ltp/rmdir05.c
winsup/testsuite/winsup.api/ltp/sbrk01.c
winsup/testsuite/winsup.api/ltp/select01.c
winsup/testsuite/winsup.api/ltp/select02.c
winsup/testsuite/winsup.api/ltp/select03.c
winsup/testsuite/winsup.api/ltp/setgid01.c
winsup/testsuite/winsup.api/ltp/setgroups01.c
winsup/testsuite/winsup.api/ltp/setpgid01.c
winsup/testsuite/winsup.api/ltp/setregid01.c
winsup/testsuite/winsup.api/ltp/setreuid01.c
winsup/testsuite/winsup.api/ltp/setuid01.c
winsup/testsuite/winsup.api/ltp/setuid02.c
winsup/testsuite/winsup.api/ltp/signal03.c
winsup/testsuite/winsup.api/ltp/stat01.c
winsup/testsuite/winsup.api/ltp/stat02.c
winsup/testsuite/winsup.api/ltp/stat03.c
winsup/testsuite/winsup.api/ltp/stat05.c
winsup/testsuite/winsup.api/ltp/stat06.c
winsup/testsuite/winsup.api/ltp/symlink01.c
winsup/testsuite/winsup.api/ltp/symlink02.c
winsup/testsuite/winsup.api/ltp/symlink03.c
winsup/testsuite/winsup.api/ltp/symlink04.c
winsup/testsuite/winsup.api/ltp/symlink05.c
winsup/testsuite/winsup.api/ltp/sync01.c
winsup/testsuite/winsup.api/ltp/sync02.c
winsup/testsuite/winsup.api/ltp/time01.c
winsup/testsuite/winsup.api/ltp/time02.c
winsup/testsuite/winsup.api/ltp/times01.c
winsup/testsuite/winsup.api/ltp/times02.c
winsup/testsuite/winsup.api/ltp/times03.c
winsup/testsuite/winsup.api/ltp/truncate01.c
winsup/testsuite/winsup.api/ltp/truncate02.c
winsup/testsuite/winsup.api/ltp/ulimit01.c
winsup/testsuite/winsup.api/ltp/umask01.c
winsup/testsuite/winsup.api/ltp/umask02.c
winsup/testsuite/winsup.api/ltp/umask03.c
winsup/testsuite/winsup.api/ltp/uname01.c
winsup/testsuite/winsup.api/ltp/unlink05.c
winsup/testsuite/winsup.api/ltp/unlink06.c
winsup/testsuite/winsup.api/ltp/unlink07.c
winsup/testsuite/winsup.api/ltp/unlink08.c
winsup/testsuite/winsup.api/ltp/vfork01.c
winsup/testsuite/winsup.api/ltp/wait02.c
winsup/testsuite/winsup.api/ltp/wait401.c
winsup/testsuite/winsup.api/ltp/wait402.c
winsup/testsuite/winsup.api/ltp/write01.c
winsup/testsuite/winsup.api/ltp/write02.c
winsup/testsuite/winsup.api/ltp/write03.c
winsup/testsuite/winsup.api/mmaptest01.c
winsup/testsuite/winsup.api/mmaptest02.c
winsup/testsuite/winsup.api/mmaptest03.c
winsup/testsuite/winsup.api/mmaptest04.c
winsup/testsuite/winsup.api/msgtest.c
winsup/testsuite/winsup.api/nullgetcwd.c
winsup/testsuite/winsup.api/pthread/cancel1.c
winsup/testsuite/winsup.api/pthread/cancel10.c
winsup/testsuite/winsup.api/pthread/cancel11.c
winsup/testsuite/winsup.api/pthread/cancel12.c
winsup/testsuite/winsup.api/pthread/cancel2.c
winsup/testsuite/winsup.api/pthread/cancel3.c
winsup/testsuite/winsup.api/pthread/cancel4.c
winsup/testsuite/winsup.api/pthread/cancel5.c
winsup/testsuite/winsup.api/pthread/cancel6.c
winsup/testsuite/winsup.api/pthread/cancel7.c
winsup/testsuite/winsup.api/pthread/cancel8.c
winsup/testsuite/winsup.api/pthread/cancel9.c
winsup/testsuite/winsup.api/pthread/cleanup2.c
winsup/testsuite/winsup.api/pthread/cleanup3.c
winsup/testsuite/winsup.api/pthread/condvar1.c
winsup/testsuite/winsup.api/pthread/condvar2.c
winsup/testsuite/winsup.api/pthread/condvar2_1.c
winsup/testsuite/winsup.api/pthread/condvar3.c
winsup/testsuite/winsup.api/pthread/condvar3_1.c
winsup/testsuite/winsup.api/pthread/condvar3_2.c
winsup/testsuite/winsup.api/pthread/condvar3_3.c
winsup/testsuite/winsup.api/pthread/condvar4.c
winsup/testsuite/winsup.api/pthread/condvar5.c
winsup/testsuite/winsup.api/pthread/condvar6.c
winsup/testsuite/winsup.api/pthread/condvar7.c
winsup/testsuite/winsup.api/pthread/condvar8.c
winsup/testsuite/winsup.api/pthread/condvar9.c
winsup/testsuite/winsup.api/pthread/count1.c
winsup/testsuite/winsup.api/pthread/create1.c
winsup/testsuite/winsup.api/pthread/create2.c
winsup/testsuite/winsup.api/pthread/equal1.c
winsup/testsuite/winsup.api/pthread/exit1.c
winsup/testsuite/winsup.api/pthread/exit2.c
winsup/testsuite/winsup.api/pthread/exit3.c
winsup/testsuite/winsup.api/pthread/inherit1.c
winsup/testsuite/winsup.api/pthread/join0.c
winsup/testsuite/winsup.api/pthread/join1.c
winsup/testsuite/winsup.api/pthread/join2.c
winsup/testsuite/winsup.api/pthread/mainthreadexits.c
winsup/testsuite/winsup.api/pthread/mutex1.c
winsup/testsuite/winsup.api/pthread/mutex1d.c
winsup/testsuite/winsup.api/pthread/mutex1e.c
winsup/testsuite/winsup.api/pthread/mutex1n.c
winsup/testsuite/winsup.api/pthread/mutex1r.c
winsup/testsuite/winsup.api/pthread/mutex2.c
winsup/testsuite/winsup.api/pthread/mutex3.c
winsup/testsuite/winsup.api/pthread/mutex4.c
winsup/testsuite/winsup.api/pthread/mutex5.c
winsup/testsuite/winsup.api/pthread/mutex6d.c
winsup/testsuite/winsup.api/pthread/mutex6e.c
winsup/testsuite/winsup.api/pthread/mutex6n.c
winsup/testsuite/winsup.api/pthread/mutex6r.c
winsup/testsuite/winsup.api/pthread/mutex7.c
winsup/testsuite/winsup.api/pthread/mutex7d.c
winsup/testsuite/winsup.api/pthread/mutex7e.c
winsup/testsuite/winsup.api/pthread/mutex7n.c
winsup/testsuite/winsup.api/pthread/mutex7r.c
winsup/testsuite/winsup.api/pthread/mutex8e.c
winsup/testsuite/winsup.api/pthread/mutex8n.c
winsup/testsuite/winsup.api/pthread/mutex8r.c
winsup/testsuite/winsup.api/pthread/once1.c
winsup/testsuite/winsup.api/pthread/priority1.c
winsup/testsuite/winsup.api/pthread/priority2.c
winsup/testsuite/winsup.api/pthread/rwlock1.c
winsup/testsuite/winsup.api/pthread/rwlock2.c
winsup/testsuite/winsup.api/pthread/rwlock3.c
winsup/testsuite/winsup.api/pthread/rwlock4.c
winsup/testsuite/winsup.api/pthread/rwlock5.c
winsup/testsuite/winsup.api/pthread/rwlock6.c
winsup/testsuite/winsup.api/pthread/rwlock7.c
winsup/testsuite/winsup.api/pthread/self1.c
winsup/testsuite/winsup.api/pthread/self2.c
winsup/testsuite/winsup.api/pthread/test.h
winsup/testsuite/winsup.api/pthread/threadidafterfork.c
winsup/testsuite/winsup.api/pthread/tsd1.c
winsup/testsuite/winsup.api/resethand.c
winsup/testsuite/winsup.api/samples/sample-fail.c
winsup/testsuite/winsup.api/samples/sample-miscompile.c
winsup/testsuite/winsup.api/samples/sample-pass.c
winsup/testsuite/winsup.api/semtest.c
winsup/testsuite/winsup.api/shmtest.c
winsup/testsuite/winsup.api/sigchld.c
winsup/testsuite/winsup.api/signal-into-win32-api.c
winsup/testsuite/winsup.api/systemcall.c
winsup/testsuite/winsup.api/user_malloc.c
winsup/testsuite/winsup.api/waitpid.c
winsup/testsuite/winsup.api/winsup.exp
winsup/utils/COPYING.dumper
winsup/utils/ChangeLog
winsup/utils/ChangeLog-2000
winsup/utils/Makefile.in
winsup/utils/aclocal.m4
winsup/utils/autogen.sh
winsup/utils/bloda.cc
winsup/utils/configure
winsup/utils/configure.ac
winsup/utils/cygcheck.cc
winsup/utils/cygpath.cc
winsup/utils/cygwin-console-helper.cc
winsup/utils/dump_setup.cc
winsup/utils/dumper.cc
winsup/utils/dumper.h
winsup/utils/getconf.c
winsup/utils/getfacl.c
winsup/utils/kill.cc
winsup/utils/ldd.cc
winsup/utils/ldh.cc
winsup/utils/loadlib.h
winsup/utils/locale.cc
winsup/utils/mkgroup.c
winsup/utils/mkpasswd.c
winsup/utils/module_info.cc
winsup/utils/mount.cc
winsup/utils/parse_pe.cc
winsup/utils/passwd.c
winsup/utils/path.cc
winsup/utils/path.h
winsup/utils/pldd.c
winsup/utils/ps.cc
winsup/utils/regtool.cc
winsup/utils/setfacl.c
winsup/utils/setmetamode.c
winsup/utils/ssp.c
winsup/utils/ssp.txt
winsup/utils/strace.cc
winsup/utils/testsuite.cc
winsup/utils/testsuite.h
winsup/utils/tzset.c
winsup/utils/umount.cc
winsup/utils/utils.sgml
winsup/utils/wide_path.h
Diffstat (limited to 'winsup/cygwin/select.cc')
-rw-r--r-- | winsup/cygwin/select.cc | 1717 |
1 files changed, 0 insertions, 1717 deletions
diff --git a/winsup/cygwin/select.cc b/winsup/cygwin/select.cc deleted file mode 100644 index c67471cbc..000000000 --- a/winsup/cygwin/select.cc +++ /dev/null @@ -1,1717 +0,0 @@ -/* select.cc - - Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, - 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Red Hat, Inc. - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -/* The following line means that the BSD socket definitions for - fd_set, FD_ISSET etc. are used in this file. */ - -#define __INSIDE_CYGWIN_NET__ - -#include "winsup.h" -#include <stdlib.h> -#include <sys/param.h> -#include "ntdll.h" - -#include <wingdi.h> -#include <winuser.h> -#define USE_SYS_TYPES_FD_SET -#include <winsock2.h> -#include <netdb.h> -#include "cygerrno.h" -#include "security.h" -#include "path.h" -#include "fhandler.h" -#include "select.h" -#include "dtable.h" -#include "cygheap.h" -#include "pinfo.h" -#include "sigproc.h" -#include "cygtls.h" -#include "cygwait.h" - -/* - * All these defines below should be in sys/types.h - * but because of the includes above, they may not have - * been included. We create special UNIX_xxxx versions here. - */ - -#ifndef NBBY -#define NBBY 8 /* number of bits in a byte */ -#endif /* NBBY */ - -/* - * Select uses bit masks of file descriptors in longs. - * These macros manipulate such bit fields (the filesystem macros use chars). - * FD_SETSIZE may be defined by the user, but the default here - * should be >= NOFILE (param.h). - */ - -typedef long fd_mask; -#define UNIX_NFDBITS (sizeof (fd_mask) * NBBY) /* bits per mask */ -#ifndef unix_howmany -#define unix_howmany(x,y) (((x)+((y)-1))/(y)) -#endif - -#define unix_fd_set fd_set - -#define NULL_fd_set ((fd_set *) NULL) -#define sizeof_fd_set(n) \ - ((unsigned) (NULL_fd_set->fds_bits + unix_howmany ((n), UNIX_NFDBITS))) -#define UNIX_FD_SET(n, p) \ - ((p)->fds_bits[(n)/UNIX_NFDBITS] |= (1L << ((n) % UNIX_NFDBITS))) -#define UNIX_FD_CLR(n, p) \ - ((p)->fds_bits[(n)/UNIX_NFDBITS] &= ~(1L << ((n) % UNIX_NFDBITS))) -#define UNIX_FD_ISSET(n, p) \ - ((p)->fds_bits[(n)/UNIX_NFDBITS] & (1L << ((n) % UNIX_NFDBITS))) -#define UNIX_FD_ZERO(p, n) \ - memset ((caddr_t) (p), 0, sizeof_fd_set ((n))) - -#define allocfd_set(n) ({\ - size_t __sfds = sizeof_fd_set (n) + 8; \ - void *__res = alloca (__sfds); \ - memset (__res, 0, __sfds); \ - (fd_set *) __res; \ -}) - -#define copyfd_set(to, from, n) memcpy (to, from, sizeof_fd_set (n)); - -#define set_handle_or_return_if_not_open(h, s) \ - h = (s)->fh->get_handle (); \ - if (cygheap->fdtab.not_open ((s)->fd)) \ - { \ - (s)->thread_errno = EBADF; \ - return -1; \ - } - -static int select (int, fd_set *, fd_set *, fd_set *, DWORD); - -/* The main select code. */ -extern "C" int -cygwin_select (int maxfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, - struct timeval *to) -{ - select_printf ("select(%d, %p, %p, %p, %p)", maxfds, readfds, writefds, exceptfds, to); - - pthread_testcancel (); - int res; - if (maxfds < 0) - { - set_errno (EINVAL); - res = -1; - } - else - { - /* Convert to milliseconds or INFINITE if to == NULL */ - DWORD ms = to ? (to->tv_sec * 1000) + (to->tv_usec / 1000) : INFINITE; - if (ms == 0 && to->tv_usec) - ms = 1; /* At least 1 ms granularity */ - - if (to) - select_printf ("to->tv_sec %d, to->tv_usec %d, ms %d", to->tv_sec, to->tv_usec, ms); - else - select_printf ("to NULL, ms %x", ms); - - res = select (maxfds, readfds ?: allocfd_set (maxfds), - writefds ?: allocfd_set (maxfds), - exceptfds ?: allocfd_set (maxfds), ms); - } - syscall_printf ("%R = select(%d, %p, %p, %p, %p)", res, maxfds, readfds, - writefds, exceptfds, to); - return res; -} - -/* This function is arbitrarily split out from cygwin_select to avoid odd - gcc issues with the use of allocfd_set and improper constructor handling - for the sel variable. */ -static int -select (int maxfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, - DWORD ms) -{ - int res = select_stuff::select_loop; - - LONGLONG start_time = gtod.msecs (); /* Record the current time for later use. */ - - select_stuff sel; - sel.return_on_signal = 0; - - /* Allocate some fd_set structures using the number of fds as a guide. */ - fd_set *r = allocfd_set (maxfds); - fd_set *w = allocfd_set (maxfds); - fd_set *e = allocfd_set (maxfds); - - while (res == select_stuff::select_loop) - { - /* Build the select record per fd linked list and set state as - needed. */ - for (int i = 0; i < maxfds; i++) - if (!sel.test_and_set (i, readfds, writefds, exceptfds)) - { - select_printf ("aborting due to test_and_set error"); - return -1; /* Invalid fd, maybe? */ - } - select_printf ("sel.always_ready %d", sel.always_ready); - - /* Degenerate case. No fds to wait for. Just wait for time to run out - or signal to arrive. */ - if (sel.start.next == NULL) - switch (cygwait (ms)) - { - case WAIT_SIGNALED: - select_printf ("signal received"); - if (_my_tls.call_signal_handler ()) - res = select_stuff::select_loop; /* Emulate linux behavior */ - else - { - set_sig_errno (EINTR); - res = select_stuff::select_error; - } - break; - case WAIT_CANCELED: - sel.destroy (); - pthread::static_cancel_self (); - /*NOTREACHED*/ - default: - res = select_stuff::select_set_zero; /* Set res to zero below. */ - break; - } - else if (sel.always_ready || ms == 0) - res = 0; /* Catch any active fds via - sel.poll() below */ - else - res = sel.wait (r, w, e, ms); /* wait for an fd to become - become active or time out */ - select_printf ("res %d", res); - if (res >= 0) - { - copyfd_set (readfds, r, maxfds); - copyfd_set (writefds, w, maxfds); - copyfd_set (exceptfds, e, maxfds); - /* Actually set the bit mask from sel records */ - res = (res == select_stuff::select_set_zero) ? 0 : sel.poll (readfds, writefds, exceptfds); - } - /* Always clean up everything here. If we're looping then build it - all up again. */ - sel.cleanup (); - sel.destroy (); - /* Recalculate the time remaining to wait if we are going to be looping. */ - if (res == select_stuff::select_loop && ms != INFINITE) - { - select_printf ("recalculating ms"); - LONGLONG now = gtod.msecs (); - if (now > (start_time + ms)) - { - select_printf ("timed out after verification"); - res = 0; - } - else - { - ms -= (now - start_time); - start_time = now; - select_printf ("ms now %u", ms); - } - } - } - - if (res < -1) - res = -1; - return res; -} - -extern "C" int -pselect(int maxfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, - const struct timespec *ts, const sigset_t *set) -{ - struct timeval tv; - sigset_t oldset = _my_tls.sigmask; - - myfault efault; - if (efault.faulted (EFAULT)) - return -1; - if (ts) - { - tv.tv_sec = ts->tv_sec; - tv.tv_usec = ts->tv_nsec / 1000; - } - if (set) - set_signal_mask (_my_tls.sigmask, *set); - int ret = cygwin_select (maxfds, readfds, writefds, exceptfds, - ts ? &tv : NULL); - if (set) - set_signal_mask (_my_tls.sigmask, oldset); - return ret; -} - -/* Call cleanup functions for all inspected fds. Gets rid of any - executing threads. */ -void -select_stuff::cleanup () -{ - select_record *s = &start; - - select_printf ("calling cleanup routines"); - while ((s = s->next)) - if (s->cleanup) - { - s->cleanup (s, this); - s->cleanup = NULL; - } -} - -/* Destroy all storage associated with select stuff. */ -inline void -select_stuff::destroy () -{ - select_record *s; - select_record *snext = start.next; - - select_printf ("deleting select records"); - while ((s = snext)) - { - snext = s->next; - delete s; - } - start.next = NULL; -} - -select_stuff::~select_stuff () -{ - cleanup (); - destroy (); -} - -/* Add a record to the select chain */ -bool -select_stuff::test_and_set (int i, fd_set *readfds, fd_set *writefds, - fd_set *exceptfds) -{ - if (!UNIX_FD_ISSET (i, readfds) && !UNIX_FD_ISSET (i, writefds) - && ! UNIX_FD_ISSET (i, exceptfds)) - return true; - - select_record *s = new select_record; - if (!s) - return false; - - s->next = start.next; - start.next = s; - - if (UNIX_FD_ISSET (i, readfds) && !cygheap->fdtab.select_read (i, this)) - goto err; - if (UNIX_FD_ISSET (i, writefds) && !cygheap->fdtab.select_write (i, this)) - goto err; - if (UNIX_FD_ISSET (i, exceptfds) && !cygheap->fdtab.select_except (i, this)) - goto err; /* error */ - - if (s->read_ready || s->write_ready || s->except_ready) - always_ready = true; - - if (s->windows_handle) - windows_used = true; - - return true; - -err: - start.next = s->next; - delete s; - return false; -} - -/* The heart of select. Waits for an fd to do something interesting. */ -select_stuff::wait_states -select_stuff::wait (fd_set *readfds, fd_set *writefds, fd_set *exceptfds, - DWORD ms) -{ - HANDLE w4[MAXIMUM_WAIT_OBJECTS]; - select_record *s = &start; - DWORD m = 0; - - set_signal_arrived here (w4[m++]); - if ((w4[m] = pthread::get_cancel_event ()) != NULL) - m++; - - DWORD startfds = m; - /* Loop through the select chain, starting up anything appropriate and - counting the number of active fds. */ - while ((s = s->next)) - { - if (m >= MAXIMUM_WAIT_OBJECTS) - { - set_sig_errno (EINVAL); - return select_error; - } - if (!s->startup (s, this)) - { - s->set_select_errno (); - return select_error; - } - if (s->h != NULL) - { - for (DWORD i = startfds; i < m; i++) - if (w4[i] == s->h) - goto next_while; - w4[m++] = s->h; - } -next_while:; - } - - debug_printf ("m %d, ms %u", m, ms); - - DWORD wait_ret; - if (!windows_used) - wait_ret = WaitForMultipleObjects (m, w4, FALSE, ms); - else - /* Using MWMO_INPUTAVAILABLE is the officially supported solution for - the problem that the call to PeekMessage disarms the queue state - so that a subsequent MWFMO hangs, even if there are still messages - in the queue. */ - wait_ret = MsgWaitForMultipleObjectsEx (m, w4, ms, - QS_ALLINPUT | QS_ALLPOSTMESSAGE, - MWMO_INPUTAVAILABLE); - select_printf ("wait_ret %d. verifying", wait_ret); - - wait_states res; - switch (wait_ret) - { - case WAIT_OBJECT_0: - select_printf ("signal received"); - /* Need to get rid of everything when a signal occurs since we can't - be assured that a signal handler won't jump out of select entirely. */ - cleanup (); - destroy (); - if (_my_tls.call_signal_handler ()) - res = select_loop; - else - { - set_sig_errno (EINTR); - res = select_signalled; /* Cause loop exit in cygwin_select */ - } - break; - case WAIT_FAILED: - system_printf ("WaitForMultipleObjects failed, %E"); - s = &start; - s->set_select_errno (); - res = select_error; - break; - case WAIT_TIMEOUT: - select_printf ("timed out"); - res = select_set_zero; - break; - case WAIT_OBJECT_0 + 1: - if (startfds > 1) - { - cleanup (); - destroy (); - pthread::static_cancel_self (); - /*NOTREACHED*/ - } - /* Fall through. This wasn't a cancel event. It was just a normal object - to wait for. */ - default: - s = &start; - bool gotone = false; - /* Some types of objects (e.g., consoles) wake up on "inappropriate" events - like mouse movements. The verify function will detect these situations. - If it returns false, then this wakeup was a false alarm and we should go - back to waiting. */ - while ((s = s->next)) - if (s->saw_error ()) - { - set_errno (s->saw_error ()); - res = select_error; /* Somebody detected an error */ - goto out; - } - else if ((((wait_ret >= m && s->windows_handle) || s->h == w4[wait_ret])) - && s->verify (s, readfds, writefds, exceptfds)) - gotone = true; - - if (!gotone) - res = select_loop; - else - res = select_ok; - select_printf ("gotone %d", gotone); - break; - } -out: - select_printf ("returning %d", res); - return res; -} - -static int -set_bits (select_record *me, fd_set *readfds, fd_set *writefds, - fd_set *exceptfds) -{ - int ready = 0; - fhandler_socket *sock; - select_printf ("me %p, testing fd %d (%s)", me, me->fd, me->fh->get_name ()); - if (me->read_selected && me->read_ready) - { - UNIX_FD_SET (me->fd, readfds); - ready++; - } - if (me->write_selected && me->write_ready) - { - UNIX_FD_SET (me->fd, writefds); - if (me->except_on_write && (sock = me->fh->is_socket ())) - { - /* Special AF_LOCAL handling. */ - if (!me->read_ready && sock->connect_state () == connect_pending - && sock->af_local_connect ()) - { - if (me->read_selected) - UNIX_FD_SET (me->fd, readfds); - sock->connect_state (connect_failed); - } - else - sock->connect_state (connected); - } - ready++; - } - if (me->except_selected && me->except_ready) - { - UNIX_FD_SET (me->fd, exceptfds); - ready++; - } - select_printf ("ready %d", ready); - return ready; -} - -/* Poll every fd in the select chain. Set appropriate fd in mask. */ -int -select_stuff::poll (fd_set *readfds, fd_set *writefds, fd_set *exceptfds) -{ - int n = 0; - select_record *s = &start; - while ((s = s->next)) - n += (!s->peek || s->peek (s, true)) ? - set_bits (s, readfds, writefds, exceptfds) : 0; - return n; -} - -static int -verify_true (select_record *, fd_set *, fd_set *, fd_set *) -{ - return 1; -} - -static int -verify_ok (select_record *me, fd_set *readfds, fd_set *writefds, - fd_set *exceptfds) -{ - return set_bits (me, readfds, writefds, exceptfds); -} - -static int -no_startup (select_record *, select_stuff *) -{ - return 1; -} - -static int -no_verify (select_record *, fd_set *, fd_set *, fd_set *) -{ - return 0; -} - -static int -pipe_data_available (int fd, fhandler_base *fh, HANDLE h, bool writing) -{ - IO_STATUS_BLOCK iosb = {0}; - FILE_PIPE_LOCAL_INFORMATION fpli = {0}; - - bool res; - if (fh->has_ongoing_io ()) - res = false; - else if (NtQueryInformationFile (h, &iosb, &fpli, sizeof (fpli), - FilePipeLocalInformation)) - { - /* If NtQueryInformationFile fails, optimistically assume the - pipe is writable. This could happen if we somehow - inherit a pipe that doesn't permit FILE_READ_ATTRIBUTES - access on the write end. */ - select_printf ("fd %d, %s, NtQueryInformationFile failed", - fd, fh->get_name ()); - res = writing ? true : -1; - } - else if (!writing) - { - paranoid_printf ("fd %d, %s, read avail %u", fd, fh->get_name (), - fpli.ReadDataAvailable); - res = !!fpli.ReadDataAvailable; - } - else if ((res = (fpli.WriteQuotaAvailable = (fpli.OutboundQuota - - fpli.ReadDataAvailable)))) - /* If there is anything available in the pipe buffer then signal - that. This means that a pipe could still block since you could - be trying to write more to the pipe than is available in the - buffer but that is the hazard of select(). */ - paranoid_printf ("fd %d, %s, write: size %lu, avail %lu", fd, - fh->get_name (), fpli.OutboundQuota, - fpli.WriteQuotaAvailable); - else if ((res = (fpli.OutboundQuota < PIPE_BUF && - fpli.WriteQuotaAvailable == fpli.OutboundQuota))) - /* If we somehow inherit a tiny pipe (size < PIPE_BUF), then consider - the pipe writable only if it is completely empty, to minimize the - probability that a subsequent write will block. */ - select_printf ("fd, %s, write tiny pipe: size %lu, avail %lu", - fd, fh->get_name (), fpli.OutboundQuota, - fpli.WriteQuotaAvailable); - return res ?: -!!(fpli.NamedPipeState & FILE_PIPE_CLOSING_STATE); -} - -static int -peek_pipe (select_record *s, bool from_select) -{ - HANDLE h; - set_handle_or_return_if_not_open (h, s); - - int gotone = 0; - fhandler_base *fh = (fhandler_base *) s->fh; - - DWORD dev = fh->get_device (); - if (s->read_selected && dev != FH_PIPEW) - { - if (s->read_ready) - { - select_printf ("%s, already ready for read", fh->get_name ()); - gotone = 1; - goto out; - } - - switch (fh->get_major ()) - { - case DEV_PTYM_MAJOR: - { - fhandler_pty_master *fhm = (fhandler_pty_master *) fh; - fhm->flush_to_slave (); - if (fhm->need_nl) - { - gotone = s->read_ready = true; - goto out; - } - } - break; - default: - if (fh->get_readahead_valid ()) - { - select_printf ("readahead"); - gotone = s->read_ready = true; - goto out; - } - } - - if (fh->bg_check (SIGTTIN) <= bg_eof) - { - gotone = s->read_ready = true; - goto out; - } - int n = pipe_data_available (s->fd, fh, h, false); - - if (n < 0) - { - select_printf ("read: %s, n %d", fh->get_name (), n); - if (s->except_selected) - gotone += s->except_ready = true; - if (s->read_selected) - gotone += s->read_ready = true; - } - else if (n > 0) - { - select_printf ("read: %s, ready for read: avail %d", fh->get_name (), n); - gotone += s->read_ready = true; - } - if (!gotone && s->fh->hit_eof ()) - { - select_printf ("read: %s, saw EOF", fh->get_name ()); - if (s->except_selected) - gotone += s->except_ready = true; - if (s->read_selected) - gotone += s->read_ready = true; - } - } - -out: - if (s->write_selected && dev != FH_PIPER) - { - gotone += s->write_ready = pipe_data_available (s->fd, fh, h, true); - select_printf ("write: %s, gotone %d", fh->get_name (), gotone); - } - return gotone; -} - -static int start_thread_pipe (select_record *me, select_stuff *stuff); - -static DWORD WINAPI -thread_pipe (void *arg) -{ - select_pipe_info *pi = (select_pipe_info *) arg; - DWORD sleep_time = 0; - bool looping = true; - - while (looping) - { - for (select_record *s = pi->start; (s = s->next); ) - if (s->startup == start_thread_pipe) - { - if (peek_pipe (s, true)) - looping = false; - if (pi->stop_thread) - { - select_printf ("stopping"); - looping = false; - break; - } - } - if (!looping) - break; - Sleep (sleep_time >> 3); - if (sleep_time < 80) - ++sleep_time; - if (pi->stop_thread) - break; - } - return 0; -} - -static int -start_thread_pipe (select_record *me, select_stuff *stuff) -{ - select_pipe_info *pi = stuff->device_specific_pipe; - if (pi->start) - me->h = *((select_pipe_info *) stuff->device_specific_pipe)->thread; - else - { - pi->start = &stuff->start; - pi->stop_thread = false; - pi->thread = new cygthread (thread_pipe, pi, "pipesel"); - me->h = *pi->thread; - if (!me->h) - return 0; - } - return 1; -} - -static void -pipe_cleanup (select_record *, select_stuff *stuff) -{ - select_pipe_info *pi = (select_pipe_info *) stuff->device_specific_pipe; - if (!pi) - return; - if (pi->thread) - { - pi->stop_thread = true; - pi->thread->detach (); - } - delete pi; - stuff->device_specific_pipe = NULL; -} - -select_record * -fhandler_pipe::select_read (select_stuff *ss) -{ - if (!ss->device_specific_pipe - && (ss->device_specific_pipe = new select_pipe_info) == NULL) - return NULL; - - select_record *s = ss->start.next; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->read_selected = true; - s->read_ready = false; - return s; -} - -select_record * -fhandler_pipe::select_write (select_stuff *ss) -{ - if (!ss->device_specific_pipe - && (ss->device_specific_pipe = new select_pipe_info) == NULL) - return NULL; - select_record *s = ss->start.next; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->write_selected = true; - s->write_ready = false; - return s; -} - -select_record * -fhandler_pipe::select_except (select_stuff *ss) -{ - if (!ss->device_specific_pipe - && (ss->device_specific_pipe = new select_pipe_info) == NULL) - return NULL; - select_record *s = ss->start.next; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->except_selected = true; - s->except_ready = false; - return s; -} - -select_record * -fhandler_fifo::select_read (select_stuff *ss) -{ - if (!ss->device_specific_pipe - && (ss->device_specific_pipe = new select_pipe_info) == NULL) - return NULL; - select_record *s = ss->start.next; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->read_selected = true; - s->read_ready = false; - return s; -} - -select_record * -fhandler_fifo::select_write (select_stuff *ss) -{ - if (!ss->device_specific_pipe - && (ss->device_specific_pipe = new select_pipe_info) == NULL) - return NULL; - select_record *s = ss->start.next; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->write_selected = true; - s->write_ready = false; - return s; -} - -select_record * -fhandler_fifo::select_except (select_stuff *ss) -{ - if (!ss->device_specific_pipe - && (ss->device_specific_pipe = new select_pipe_info) == NULL) - return NULL; - select_record *s = ss->start.next; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->except_selected = true; - s->except_ready = false; - return s; -} - -static int -peek_console (select_record *me, bool) -{ - extern const char * get_nonascii_key (INPUT_RECORD& input_rec, char *); - fhandler_console *fh = (fhandler_console *) me->fh; - - if (!me->read_selected) - return me->write_ready; - - if (fh->get_readahead_valid ()) - { - select_printf ("readahead"); - return me->read_ready = true; - } - - if (me->read_ready) - { - select_printf ("already ready"); - return 1; - } - - INPUT_RECORD irec; - DWORD events_read; - HANDLE h; - char tmpbuf[17]; - set_handle_or_return_if_not_open (h, me); - - for (;;) - if (fh->bg_check (SIGTTIN) <= bg_eof) - return me->read_ready = true; - else if (!PeekConsoleInput (h, &irec, 1, &events_read) || !events_read) - break; - else - { - fh->send_winch_maybe (); - if (irec.EventType == KEY_EVENT) - { - if (irec.Event.KeyEvent.bKeyDown - && (irec.Event.KeyEvent.uChar.AsciiChar - || get_nonascii_key (irec, tmpbuf))) - return me->read_ready = true; - } - else - { - if (irec.EventType == MOUSE_EVENT - && fh->mouse_aware (irec.Event.MouseEvent)) - return me->read_ready = true; - if (irec.EventType == FOCUS_EVENT && fh->focus_aware ()) - return me->read_ready = true; - } - - /* Read and discard the event */ - ReadConsoleInput (h, &irec, 1, &events_read); - } - - return me->write_ready; -} - -static int -verify_console (select_record *me, fd_set *rfds, fd_set *wfds, - fd_set *efds) -{ - return peek_console (me, true); -} - - -select_record * -fhandler_console::select_read (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = verify_console; - set_cursor_maybe (); - } - - s->peek = peek_console; - s->h = get_handle (); - s->read_selected = true; - s->read_ready = false; - return s; -} - -select_record * -fhandler_console::select_write (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = no_verify; - set_cursor_maybe (); - } - - s->peek = peek_console; - s->write_selected = true; - s->write_ready = true; - return s; -} - -select_record * -fhandler_console::select_except (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = no_verify; - set_cursor_maybe (); - } - - s->peek = peek_console; - s->except_selected = true; - s->except_ready = false; - return s; -} - -select_record * -fhandler_pty_common::select_read (select_stuff *ss) -{ - if (!ss->device_specific_pipe - && (ss->device_specific_pipe = new select_pipe_info) == NULL) - return NULL; - - select_record *s = ss->start.next; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->read_selected = true; - s->read_ready = false; - return s; -} - -select_record * -fhandler_pty_common::select_write (select_stuff *ss) -{ - if (!ss->device_specific_pipe - && (ss->device_specific_pipe = new select_pipe_info) == NULL) - return NULL; - select_record *s = ss->start.next; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->write_selected = true; - s->write_ready = false; - return s; -} - -select_record * -fhandler_pty_common::select_except (select_stuff *ss) -{ - if (!ss->device_specific_pipe - && (ss->device_specific_pipe = new select_pipe_info) == NULL) - return NULL; - select_record *s = ss->start.next; - s->startup = start_thread_pipe; - s->peek = peek_pipe; - s->verify = verify_ok; - s->cleanup = pipe_cleanup; - s->except_selected = true; - s->except_ready = false; - return s; -} - -static int -verify_tty_slave (select_record *me, fd_set *readfds, fd_set *writefds, - fd_set *exceptfds) -{ - if (IsEventSignalled (me->h)) - me->read_ready = true; - return set_bits (me, readfds, writefds, exceptfds); -} - -select_record * -fhandler_pty_slave::select_read (select_stuff *ss) -{ - select_record *s = ss->start.next; - s->h = input_available_event; - s->startup = no_startup; - s->peek = peek_pipe; - s->verify = verify_tty_slave; - s->read_selected = true; - s->read_ready = false; - s->cleanup = NULL; - return s; -} - -select_record * -fhandler_dev_null::select_read (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = no_verify; - } - s->h = get_handle (); - s->read_selected = true; - s->read_ready = true; - return s; -} - -select_record * -fhandler_dev_null::select_write (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = no_verify; - } - s->h = get_handle (); - s->write_selected = true; - s->write_ready = true; - return s; -} - -select_record * -fhandler_dev_null::select_except (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = no_verify; - } - s->h = get_handle (); - s->except_selected = true; - s->except_ready = false; - return s; -} - -static int start_thread_serial (select_record *me, select_stuff *stuff); - -static int -peek_serial (select_record *s, bool) -{ - COMSTAT st; - - fhandler_serial *fh = (fhandler_serial *) s->fh; - - if (fh->get_readahead_valid () || fh->overlapped_armed < 0) - return s->read_ready = true; - - select_printf ("fh->overlapped_armed %d", fh->overlapped_armed); - - HANDLE h; - set_handle_or_return_if_not_open (h, s); - int ready = 0; - - if ((s->read_selected && s->read_ready) || (s->write_selected && s->write_ready)) - { - select_printf ("already ready"); - ready = 1; - goto out; - } - - /* This is apparently necessary for the com0com driver. - See: http://cygwin.com/ml/cygwin/2009-01/msg00667.html */ - SetCommMask (h, 0); - - SetCommMask (h, EV_RXCHAR); - - if (!fh->overlapped_armed) - { - COMSTAT st; - - ResetEvent (fh->io_status.hEvent); - - if (!ClearCommError (h, &fh->ev, &st)) - { - debug_printf ("ClearCommError"); - goto err; - } - else if (st.cbInQue) - return s->read_ready = true; - else if (WaitCommEvent (h, &fh->ev, &fh->io_status)) - return s->read_ready = true; - else if (GetLastError () == ERROR_IO_PENDING) - fh->overlapped_armed = 1; - else - { - debug_printf ("WaitCommEvent"); - goto err; - } - } - - switch (WaitForSingleObject (fh->io_status.hEvent, 10L)) - { - case WAIT_OBJECT_0: - if (!ClearCommError (h, &fh->ev, &st)) - { - debug_printf ("ClearCommError"); - goto err; - } - else if (!st.cbInQue) - Sleep (10L); - else - { - return s->read_ready = true; - select_printf ("got something"); - } - break; - case WAIT_TIMEOUT: - break; - default: - debug_printf ("WaitForMultipleObjects"); - goto err; - } - -out: - return ready; - -err: - if (GetLastError () == ERROR_OPERATION_ABORTED) - { - select_printf ("operation aborted"); - return ready; - } - - s->set_select_errno (); - select_printf ("error %E"); - return -1; -} - -static DWORD WINAPI -thread_serial (void *arg) -{ - select_serial_info *si = (select_serial_info *) arg; - bool looping = true; - - while (looping) - for (select_record *s = si->start; (s = s->next); ) - if (s->startup != start_thread_serial) - continue; - else - { - if (peek_serial (s, true)) - looping = false; - if (si->stop_thread) - { - select_printf ("stopping"); - looping = false; - break; - } - } - - select_printf ("exiting"); - return 0; -} - -static int -start_thread_serial (select_record *me, select_stuff *stuff) -{ - if (stuff->device_specific_serial) - me->h = *((select_serial_info *) stuff->device_specific_serial)->thread; - else - { - select_serial_info *si = new select_serial_info; - si->start = &stuff->start; - si->stop_thread = false; - si->thread = new cygthread (thread_serial, si, "sersel"); - me->h = *si->thread; - stuff->device_specific_serial = si; - } - return 1; -} - -static void -serial_cleanup (select_record *, select_stuff *stuff) -{ - select_serial_info *si = (select_serial_info *) stuff->device_specific_serial; - if (!si) - return; - if (si->thread) - { - si->stop_thread = true; - si->thread->detach (); - } - delete si; - stuff->device_specific_serial = NULL; -} - -select_record * -fhandler_serial::select_read (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = start_thread_serial; - s->verify = verify_ok; - s->cleanup = serial_cleanup; - } - s->peek = peek_serial; - s->read_selected = true; - s->read_ready = false; - return s; -} - -select_record * -fhandler_serial::select_write (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = verify_ok; - } - s->peek = peek_serial; - s->h = get_handle (); - s->write_selected = true; - s->write_ready = true; - return s; -} - -select_record * -fhandler_serial::select_except (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = verify_ok; - } - s->h = NULL; - s->peek = peek_serial; - s->except_selected = false; // Can't do this - s->except_ready = false; - return s; -} - -select_record * -fhandler_base::select_read (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = verify_ok; - } - s->h = get_handle (); - s->read_selected = true; - s->read_ready = true; - return s; -} - -select_record * -fhandler_base::select_write (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = verify_ok; - } - s->h = get_handle (); - s->write_selected = true; - s->write_ready = true; - return s; -} - -select_record * -fhandler_base::select_except (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = verify_ok; - } - s->h = NULL; - s->except_selected = true; - s->except_ready = false; - return s; -} - -static int -peek_socket (select_record *me, bool) -{ - fhandler_socket *fh = (fhandler_socket *) me->fh; - long events; - /* Don't play with the settings again, unless having taken a deep look into - Richard W. Stevens Network Programming book. Thank you. */ - long evt_mask = (me->read_selected ? (FD_READ | FD_ACCEPT | FD_CLOSE) : 0) - | (me->write_selected ? (FD_WRITE | FD_CONNECT | FD_CLOSE) : 0) - | (me->except_selected ? FD_OOB : 0); - int ret = fh->evaluate_events (evt_mask, events, false); - if (me->read_selected) - me->read_ready |= ret || !!(events & (FD_READ | FD_ACCEPT | FD_CLOSE)); - if (me->write_selected) - me->write_ready |= ret || !!(events & (FD_WRITE | FD_CONNECT | FD_CLOSE)); - if (me->except_selected) - me->except_ready |= !!(events & FD_OOB); - - select_printf ("read_ready: %d, write_ready: %d, except_ready: %d", - me->read_ready, me->write_ready, me->except_ready); - return me->read_ready || me->write_ready || me->except_ready; -} - -static int start_thread_socket (select_record *, select_stuff *); - -static DWORD WINAPI -thread_socket (void *arg) -{ - select_socket_info *si = (select_socket_info *) arg; - DWORD timeout = (si->num_w4 <= MAXIMUM_WAIT_OBJECTS) - ? INFINITE - : (64 / (roundup2 (si->num_w4, MAXIMUM_WAIT_OBJECTS) - / MAXIMUM_WAIT_OBJECTS)); - bool event = false; - - select_printf ("stuff_start %p, timeout %u", si->start, timeout); - while (!event) - { - for (select_record *s = si->start; (s = s->next); ) - if (s->startup == start_thread_socket) - if (peek_socket (s, false)) - event = true; - if (!event) - for (int i = 0; i < si->num_w4; i += MAXIMUM_WAIT_OBJECTS) - switch (WaitForMultipleObjects (MIN (si->num_w4 - i, - MAXIMUM_WAIT_OBJECTS), - si->w4 + i, FALSE, timeout)) - { - case WAIT_FAILED: - goto out; - case WAIT_TIMEOUT: - continue; - case WAIT_OBJECT_0: - if (!i) /* Socket event set. */ - goto out; - /*FALLTHRU*/ - default: - break; - } - } -out: - select_printf ("leaving thread_socket"); - return 0; -} - -static inline bool init_tls_select_info () __attribute__ ((always_inline)); -static inline bool -init_tls_select_info () -{ - if (!_my_tls.locals.select.sockevt) - { - _my_tls.locals.select.sockevt = CreateEvent (&sec_none_nih, TRUE, FALSE, - NULL); - if (!_my_tls.locals.select.sockevt) - return false; - } - if (!_my_tls.locals.select.ser_num) - { - _my_tls.locals.select.ser_num - = (LONG *) malloc (MAXIMUM_WAIT_OBJECTS * sizeof (LONG)); - if (!_my_tls.locals.select.ser_num) - return false; - _my_tls.locals.select.w4 - = (HANDLE *) malloc (MAXIMUM_WAIT_OBJECTS * sizeof (HANDLE)); - if (!_my_tls.locals.select.w4) - { - free (_my_tls.locals.select.ser_num); - _my_tls.locals.select.ser_num = NULL; - return false; - } - _my_tls.locals.select.max_w4 = MAXIMUM_WAIT_OBJECTS; - } - return true; -} - -static int -start_thread_socket (select_record *me, select_stuff *stuff) -{ - select_socket_info *si; - - if ((si = (select_socket_info *) stuff->device_specific_socket)) - { - me->h = *si->thread; - return 1; - } - - si = new select_socket_info; - - if (!init_tls_select_info ()) - return 0; - - si->ser_num = _my_tls.locals.select.ser_num; - si->w4 = _my_tls.locals.select.w4; - - si->w4[0] = _my_tls.locals.select.sockevt; - si->num_w4 = 1; - - select_record *s = &stuff->start; - while ((s = s->next)) - if (s->startup == start_thread_socket) - { - /* No event/socket should show up multiple times. Every socket - is uniquely identified by its serial number in the global - wsock_events record. */ - const LONG ser_num = ((fhandler_socket *) s->fh)->serial_number (); - for (int i = 1; i < si->num_w4; ++i) - if (si->ser_num[i] == ser_num) - goto continue_outer_loop; - if (si->num_w4 >= _my_tls.locals.select.max_w4) - { - LONG *nser = (LONG *) realloc (si->ser_num, - (_my_tls.locals.select.max_w4 - + MAXIMUM_WAIT_OBJECTS) - * sizeof (LONG)); - if (!nser) - return 0; - _my_tls.locals.select.ser_num = si->ser_num = nser; - HANDLE *nw4 = (HANDLE *) realloc (si->w4, - (_my_tls.locals.select.max_w4 - + MAXIMUM_WAIT_OBJECTS) - * sizeof (HANDLE)); - if (!nw4) - return 0; - _my_tls.locals.select.w4 = si->w4 = nw4; - _my_tls.locals.select.max_w4 += MAXIMUM_WAIT_OBJECTS; - } - si->ser_num[si->num_w4] = ser_num; - si->w4[si->num_w4++] = ((fhandler_socket *) s->fh)->wsock_event (); - continue_outer_loop: - ; - } - stuff->device_specific_socket = si; - si->start = &stuff->start; - select_printf ("stuff_start %p", &stuff->start); - si->thread = new cygthread (thread_socket, si, "socksel"); - me->h = *si->thread; - return 1; -} - -void -socket_cleanup (select_record *, select_stuff *stuff) -{ - select_socket_info *si = (select_socket_info *) stuff->device_specific_socket; - select_printf ("si %p si->thread %p", si, si ? si->thread : NULL); - if (!si) - return; - if (si->thread) - { - SetEvent (si->w4[0]); - /* Wait for thread to go away */ - si->thread->detach (); - ResetEvent (si->w4[0]); - } - delete si; - stuff->device_specific_socket = NULL; - select_printf ("returning"); -} - -select_record * -fhandler_socket::select_read (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = start_thread_socket; - s->verify = verify_true; - s->cleanup = socket_cleanup; - } - s->peek = peek_socket; - s->read_ready = saw_shutdown_read (); - s->read_selected = true; - return s; -} - -select_record * -fhandler_socket::select_write (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = start_thread_socket; - s->verify = verify_true; - s->cleanup = socket_cleanup; - } - s->peek = peek_socket; - s->write_ready = saw_shutdown_write () || connect_state () == unconnected; - s->write_selected = true; - if (connect_state () != unconnected) - { - s->except_ready = saw_shutdown_write () || saw_shutdown_read (); - s->except_on_write = true; - } - return s; -} - -select_record * -fhandler_socket::select_except (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = start_thread_socket; - s->verify = verify_true; - s->cleanup = socket_cleanup; - } - s->peek = peek_socket; - /* FIXME: Is this right? Should these be used as criteria for except? */ - s->except_ready = saw_shutdown_write () || saw_shutdown_read (); - s->except_selected = true; - return s; -} - -static int -peek_windows (select_record *me, bool) -{ - MSG m; - HANDLE h; - set_handle_or_return_if_not_open (h, me); - - if (me->read_selected && me->read_ready) - return 1; - - if (PeekMessageW (&m, (HWND) h, 0, 0, PM_NOREMOVE)) - { - me->read_ready = true; - select_printf ("window %d(%p) ready", me->fd, h); - return 1; - } - - select_printf ("window %d(%p) not ready", me->fd, h); - return me->write_ready; -} - -static int -verify_windows (select_record *me, fd_set *rfds, fd_set *wfds, - fd_set *efds) -{ - return peek_windows (me, true); -} - -select_record * -fhandler_windows::select_read (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - } - s->verify = verify_windows; - s->peek = peek_windows; - s->read_selected = true; - s->read_ready = false; - s->h = get_handle (); - s->windows_handle = true; - return s; -} - -select_record * -fhandler_windows::select_write (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = verify_ok; - } - s->peek = peek_windows; - s->h = get_handle (); - s->write_selected = true; - s->write_ready = true; - s->windows_handle = true; - return s; -} - -select_record * -fhandler_windows::select_except (select_stuff *ss) -{ - select_record *s = ss->start.next; - if (!s->startup) - { - s->startup = no_startup; - s->verify = verify_ok; - } - s->peek = peek_windows; - s->h = get_handle (); - s->except_selected = true; - s->except_ready = false; - s->windows_handle = true; - return s; -} - -static int -peek_mailslot (select_record *me, bool) -{ - HANDLE h; - set_handle_or_return_if_not_open (h, me); - - if (me->read_selected && me->read_ready) - return 1; - DWORD msgcnt = 0; - if (!GetMailslotInfo (h, NULL, NULL, &msgcnt, NULL)) - { - select_printf ("mailslot %d(%p) error %E", me->fd, h); - return 1; - } - if (msgcnt > 0) - { - me->read_ready = true; - select_printf ("mailslot %d(%p) ready", me->fd, h); - return 1; - } - select_printf ("mailslot %d(%p) not ready", me->fd, h); - return 0; -} - -static int -verify_mailslot (select_record *me, fd_set *rfds, fd_set *wfds, - fd_set *efds) -{ - return peek_mailslot (me, true); -} - -static int start_thread_mailslot (select_record *me, select_stuff *stuff); - -static DWORD WINAPI -thread_mailslot (void *arg) -{ - select_mailslot_info *mi = (select_mailslot_info *) arg; - bool gotone = false; - DWORD sleep_time = 0; - - for (;;) - { - select_record *s = mi->start; - while ((s = s->next)) - if (s->startup == start_thread_mailslot) - { - if (peek_mailslot (s, true)) - gotone = true; - if (mi->stop_thread) - { - select_printf ("stopping"); - goto out; - } - } - /* Paranoid check */ - if (mi->stop_thread) - { - select_printf ("stopping from outer loop"); - break; - } - if (gotone) - break; - Sleep (sleep_time >> 3); - if (sleep_time < 80) - ++sleep_time; - } -out: - return 0; -} - -static int -start_thread_mailslot (select_record *me, select_stuff *stuff) -{ - if (stuff->device_specific_mailslot) - { - me->h = *((select_mailslot_info *) stuff->device_specific_mailslot)->thread; - return 1; - } - select_mailslot_info *mi = new select_mailslot_info; - mi->start = &stuff->start; - mi->stop_thread = false; - mi->thread = new cygthread (thread_mailslot, mi, "mailsel"); - me->h = *mi->thread; - if (!me->h) - return 0; - stuff->device_specific_mailslot = mi; - return 1; -} - -static void -mailslot_cleanup (select_record *, select_stuff *stuff) -{ - select_mailslot_info *mi = (select_mailslot_info *) stuff->device_specific_mailslot; - if (!mi) - return; - if (mi->thread) - { - mi->stop_thread = true; - mi->thread->detach (); - } - delete mi; - stuff->device_specific_mailslot = NULL; -} - -select_record * -fhandler_mailslot::select_read (select_stuff *ss) -{ - select_record *s = ss->start.next; - s->startup = start_thread_mailslot; - s->peek = peek_mailslot; - s->verify = verify_mailslot; - s->cleanup = mailslot_cleanup; - s->read_selected = true; - s->read_ready = false; - return s; -} |