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Get Redbean fork() working on the New Technology

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Now that we have understandable system call tracing on Windows, this
change rewrites many of the polyfill internals for that platform, to
help things get closer to tip top shape. Support for complex forking
scenarios had been in a regressed state for quite some time. Now, it
works! Subsequent changes should be able to address the performance.
This commit is contained in:
Justine Tunney 2022-03-20 08:01:14 -07:00
parent efedef6e65
commit 0cb6b6ff4b
84 changed files with 1340 additions and 338 deletions
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46
libc/sysv/consts.sh
View file

@ -175,30 +175,28 @@ syscon compat SIGPOLL 29 23 23 23 23 29 # same as SIGIO
syscon compat SIGIOT 6 6 6 6 6 6 # PDP-11 feature; same as SIGABRT
syscon compat SIGPWR 30 30 30 30 32 30 # not implemented in most community editions of system five; consider doing this using SIGUSR1 or SIGUSR2 instead
# open() flags ┌──────hoo boy
# ┌──────┐
# │┌─<<8─┴───dwFlagsAndAttributes
# ┌││─────┐
# │││ │ ┌┴───dwDesiredAccess
# N │││ │ │
# group name GNU/Systemd XNU's Not UNIX! FreeBSD OpenBSD NetBSD T │││┌─┴┐│ Commentary
syscon open O_RDONLY 0 0 0 0 0 0xA0000000 # unix consensus & kNtGenericRead|kNtGenericExecute
syscon open O_WRONLY 1 1 1 1 1 0x40000000 # unix consensus & kNtGenericWrite
syscon open O_RDWR 2 2 2 2 2 0xE0000000 # unix consensus & kNtGenericRead|kNtGenericWrite|kNtGenericExecute
syscon open O_ACCMODE 3 3 3 3 3 0xE0000000 # O_RDONLY|O_WRONLY|O_RDWR
syscon open O_APPEND 0x00000400 8 8 8 8 0x00000004 # bsd consensus & kNtFileAppendData; won't pose issues w/ mknod(S_IFIFO)
syscon open O_CREAT 0x00000040 0x00000200 0x00000200 0x00000200 0x00000200 0x00000040 # bsd consensus & NT faked as Linux
syscon open O_EXCL 0x00000080 0x00000800 0x00000800 0x00000800 0x00000800 0x00000080 # bsd consensus & NT faked as Linux
syscon open O_TRUNC 0x00000200 0x00000400 0x00000400 0x00000400 0x00000400 0x00000200 # bsd consensus & NT faked as Linux
syscon open O_DIRECTORY 0x00010000 0x00100000 0x00020000 0x00020000 0x00200000 0x02000000 # useful hint on UNIX, but required on NT (see kNtFileFlagBackupSemantics)
syscon open O_RANDOM 0 0 0 0 0 0x10000000 # kNtFileFlagRandomAccess
syscon open O_SEQUENTIAL 0 0 0 0 0 0x08000000 # kNtFileFlagSequentialScan
syscon open O_DIRECT 0x00004000 0 0x00010000 0 0x00080000 0x00200000 # kNtFileFlagNoBuffering>>8
syscon open O_CLOEXEC 0x00080000 0x01000000 0x00100000 0x00010000 0x00400000 0x00080000 # NT faked as Linux
syscon open O_TMPFILE 0x00410000 0 0 0 0 0x00000000 # Linux 3.11+ (c. 2013) & kNtFileAttributeTemporary|kNtFileFlagDeleteOnClose
syscon open O_SPARSE 0 0 0 0 0 0x00040000 # we invented it
syscon open O_NDELAY 0x00000800 0x00000004 0x00000004 0x00000004 0x00000004 0x00000800 # bsd consensus & kNtFileFlagWriteThrough>>8 → 0x00800000 (???)
syscon open O_NONBLOCK 0x00000800 0x00000004 0x00000004 0x00000004 0x00000004 0x00000800 # bsd consensus & faked on nt to be same as linux
# open() flags
#
# group name GNU/Systemd XNU's Not UNIX! FreeBSD OpenBSD NetBSD Windoze Commentary
syscon open O_RDONLY 0 0 0 0 0 0 # consensus
syscon open O_WRONLY 1 1 1 1 1 1 # consensus
syscon open O_RDWR 2 2 2 2 2 2 # consensus
syscon open O_ACCMODE 3 3 3 3 3 3 # O_RDONLY|O_WRONLY|O_RDWR
syscon open O_APPEND 0x00000400 8 8 8 8 0x00000400 # bsd consensus & kNtFileAppendData; won't pose issues w/ mknod(S_IFIFO) [SYNC libc/calls/open-nt.c]
syscon open O_CREAT 0x00000040 0x00000200 0x00000200 0x00000200 0x00000200 0x00000040 # bsd consensus & NT faked as Linux [SYNC libc/calls/open-nt.c]
syscon open O_EXCL 0x00000080 0x00000800 0x00000800 0x00000800 0x00000800 0x00000080 # bsd consensus & NT faked as Linux [SYNC libc/calls/open-nt.c]
syscon open O_TRUNC 0x00000200 0x00000400 0x00000400 0x00000400 0x00000400 0x00000200 # bsd consensus & NT faked as Linux [SYNC libc/calls/open-nt.c]
syscon open O_DIRECTORY 0x00010000 0x00100000 0x00020000 0x00020000 0x00200000 0x00010000 # useful hint on UNIX, but required on NT (see kNtFileFlagBackupSemantics) [SYNC libc/calls/open-nt.c]
syscon open O_DIRECT 0x00004000 0 0x00010000 0 0x00080000 0x00004000 # kNtFileFlagNoBuffering [SYNC libc/calls/open-nt.c]
syscon open O_NDELAY 0x00000800 0x00000004 0x00000004 0x00000004 0x00000004 0x00000800 # kNtFileFlagWriteThrough [SYNC libc/calls/open-nt.c]
syscon open O_RANDOM 0 0 0 0 0 0x80000000 # kNtFileFlagRandomAccess [SYNC libc/calls/open-nt.c]
syscon open O_SEQUENTIAL 0 0 0 0 0 0x40000000 # kNtFileFlagSequentialScan [SYNC libc/calls/open-nt.c]
syscon open O_COMPRESSED 0 0 0 0 0 0x20000000 # kNtFileAttributeCompressed [SYNC libc/calls/open-nt.c]
syscon open O_INDEXED 0 0 0 0 0 0x10000000 # !kNtFileAttributeNotContentIndexed [SYNC libc/calls/open-nt.c]
syscon open O_CLOEXEC 0x00080000 0x01000000 0x00100000 0x00010000 0x00400000 0x00080000 # NT faked as Linux [SYNC libc/calls/open-nt.c]
syscon open O_TMPFILE 0x00410000 0 0 0 0 0x00410000 # Linux 3.11+ (c. 2013) & kNtFileAttributeTemporary|kNtFileFlagDeleteOnClose [SYNC libc/calls/open-nt.c]
syscon open O_SPARSE 0 0 0 0 0 0 # wut
syscon open O_NONBLOCK 0x00000800 0x00000004 0x00000004 0x00000004 0x00000004 0x00000800 # bsd consensus
syscon open O_ASYNC 0x00002000 0x00000040 0x00000040 0x00000040 0x00000040 0 # bsd consensus
syscon open O_NOFOLLOW 0x00020000 0x00000100 0x00000100 0x00000100 0x00000100 0 # bsd consensus
syscon open O_NOFOLLOW_ANY 0 0x20000000 0 0 0 0 #