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Make more Windows socket fixes and improvements

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This change makes send() / sendto() always block on Windows. It's needed
because poll(POLLOUT) doesn't guarantee a socket is immediately writable
on Windows, and it caused rsync to fail because it made that assumption.
The only exception is when a SO_SNDTIMEO is specified which will EAGAIN.

Tests are added confirming MSG_WAITALL and MSG_NOSIGNAL work as expected
on all our supported OSes. Most of the platform-specific MSG_FOO magnums
have been deleted, with the exception of MSG_FASTOPEN. Your --strace log
will now show MSG_FOO flags as symbols rather than numbers.

I've also removed cv_wait_example_test because it's 0.3% flaky with Qemu
under system load since it depends on a process being readily scheduled.
This commit is contained in:
Justine Tunney 2024-09-18 19:54:56 -07:00
parent ce2fbf9325
commit 87a6669900
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
41 changed files with 584 additions and 184 deletions
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26
libc/sysv/consts.sh
View file

@ -1138,32 +1138,12 @@ syscon reboot RB_NOSYNC 0x20000000 0x20000000 4 4 4 4 4 0x2000000
syscon msg MSG_OOB 1 1 1 1 1 1 1 1 # consensus
syscon msg MSG_PEEK 2 2 2 2 2 2 2 2 # consensus
syscon msg MSG_DONTROUTE 4 4 4 4 4 4 4 4 # consensus
syscon msg MSG_FASTOPEN 0x20000000 0x20000000 0 0 0 0 0 0 # TODO
syscon msg MSG_WAITALL 0x0100 0x0100 0x40 0x40 0x40 0x40 0x40 8 # bsd consensus
syscon msg MSG_MORE 0x8000 0x8000 0 0 0 0 0 0 # send/sendto: manual TCP_CORK hbasically
syscon msg MSG_NOSIGNAL 0x4000 0x4000 0x80000 0x80000 0x020000 0x0400 0x0400 0 # send/sendto: don't SIGPIPE on EOF
syscon msg MSG_DONTWAIT 0x40 0x40 0x80 0x80 0x80 0x80 0x80 0x40 # send/sendto: manual non-blocking
syscon msg MSG_WAITALL 0x0100 0x0100 0x40 0x40 0x40 0x40 0x40 8 # bsd consensus
syscon msg MSG_NOSIGNAL 0x4000 0x4000 0x80000 0x80000 0x020000 0x0400 0x0400 0x10000000 # send/sendto: don't raise sigpipe on local shutdown
syscon msg MSG_TRUNC 0x20 0x20 0x10 0x10 0x10 0x10 0x10 0x0100 # bsd consensus
syscon msg MSG_CTRUNC 8 8 0x20 0x20 0x20 0x20 0x20 0x0200 # bsd consensus
syscon msg MSG_ERRQUEUE 0x2000 0x2000 0 0 0 0 0 0x1000 # bsd consensus
syscon msg MSG_NOERROR 0x1000 0x1000 0x1000 0x1000 0x1000 0x1000 0x1000 0 # unix consensus
syscon msg MSG_EOR 0x80 0x80 8 8 8 8 8 0 # bsd consensus
syscon msg MSG_CMSG_CLOEXEC 0x40000000 0x40000000 0 0 0x040000 0x0800 0x0800 0
syscon msg MSG_WAITFORONE 0x010000 0x010000 0 0 0x080000 0 0x2000 0
syscon msg MSG_BATCH 0x040000 0x040000 0 0 0 0 0 0
syscon msg MSG_CONFIRM 0x0800 0x0800 0 0 0 0 0 0
syscon msg MSG_EXCEPT 0x2000 0x2000 0 0 0 0 0 0
syscon msg MSG_FIN 0x0200 0x0200 0x0100 0x0100 0x0100 0 0 0
syscon msg MSG_EOF 0x0200 0x0200 0x0100 0x0100 0x0100 0 0 0
syscon msg MSG_INFO 12 12 0 0 0 0 0 0
syscon msg MSG_PARITY_ERROR 9 9 0 0 0 0 0 0
syscon msg MSG_PROXY 0x10 0x10 0 0 0 0 0 0
syscon msg MSG_RST 0x1000 0x1000 0 0 0 0 0 0
syscon msg MSG_STAT 11 11 0 0 0 0 0 0
syscon msg MSG_SYN 0x0400 0x0400 0 0 0 0 0 0
syscon msg MSG_BCAST 0 0 0 0 0 0x100 0x100 0
syscon msg MSG_MCAST 0 0 0 0 0 0x200 0x200 0
syscon msg MSG_NOTIFICATION 0x8000 0x8000 0 0 0x2000 0 0x4000 0
syscon msg MSG_FASTOPEN 0x20000000 0x20000000 -1 -1 -1 -1 -1 -1 #
# getpriority() / setpriority() magnums (a.k.a. nice)
#

2
libc/sysv/consts/MSG_BATCH.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_BATCH,0x040000,0x040000,0,0,0,0,0,0

2
libc/sysv/consts/MSG_BCAST.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_BCAST,0,0,0,0,0,0x100,0x100,0

2
libc/sysv/consts/MSG_CMSG_CLOEXEC.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_CMSG_CLOEXEC,0x40000000,0x40000000,0,0,0x040000,0x0800,0x0800,0

2
libc/sysv/consts/MSG_CONFIRM.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_CONFIRM,0x0800,0x0800,0,0,0,0,0,0

2
libc/sysv/consts/MSG_EOF.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_EOF,0x0200,0x0200,0x0100,0x0100,0x0100,0,0,0

2
libc/sysv/consts/MSG_EOR.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_EOR,0x80,0x80,8,8,8,8,8,0

2
libc/sysv/consts/MSG_ERRQUEUE.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_ERRQUEUE,0x2000,0x2000,0,0,0,0,0,0x1000

2
libc/sysv/consts/MSG_EXCEPT.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_EXCEPT,0x2000,0x2000,0,0,0,0,0,0

2
libc/sysv/consts/MSG_FASTOPEN.S
View file

@ -1,2 +1,2 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_FASTOPEN,0x20000000,0x20000000,0,0,0,0,0,0
.syscon msg,MSG_FASTOPEN,0x20000000,0x20000000,-1,-1,-1,-1,-1,-1

2
libc/sysv/consts/MSG_FIN.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_FIN,0x0200,0x0200,0x0100,0x0100,0x0100,0,0,0

2
libc/sysv/consts/MSG_INFO.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_INFO,12,12,0,0,0,0,0,0

2
libc/sysv/consts/MSG_MCAST.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_MCAST,0,0,0,0,0,0x200,0x200,0

2
libc/sysv/consts/MSG_MORE.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_MORE,0x8000,0x8000,0,0,0,0,0,0

2
libc/sysv/consts/MSG_NOERROR.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_NOERROR,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0

2
libc/sysv/consts/MSG_NOSIGNAL.S
View file

@ -1,2 +1,2 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_NOSIGNAL,0x4000,0x4000,0x80000,0x80000,0x020000,0x0400,0x0400,0
.syscon msg,MSG_NOSIGNAL,0x4000,0x4000,0x80000,0x80000,0x020000,0x0400,0x0400,0x10000000

2
libc/sysv/consts/MSG_NOTIFICATION.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_NOTIFICATION,0x8000,0x8000,0,0,0x2000,0,0x4000,0

2
libc/sysv/consts/MSG_PARITY_ERROR.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_PARITY_ERROR,9,9,0,0,0,0,0,0

2
libc/sysv/consts/MSG_PROXY.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_PROXY,0x10,0x10,0,0,0,0,0,0

2
libc/sysv/consts/MSG_RST.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_RST,0x1000,0x1000,0,0,0,0,0,0

2
libc/sysv/consts/MSG_STAT.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_STAT,11,11,0,0,0,0,0,0

2
libc/sysv/consts/MSG_SYN.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_SYN,0x0400,0x0400,0,0,0,0,0,0

2
libc/sysv/consts/MSG_WAITFORONE.S
View file

@ -1,2 +0,0 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon msg,MSG_WAITFORONE,0x010000,0x010000,0,0,0x080000,0,0x2000,0

33
libc/sysv/consts/msg.h
View file

@ -2,41 +2,18 @@
#define COSMOPOLITAN_LIBC_SYSV_CONSTS_MSG_H_
COSMOPOLITAN_C_START_
extern const int MSG_BATCH;
extern const int MSG_BCAST;
extern const int MSG_CMSG_CLOEXEC;
extern const int MSG_CONFIRM;
extern const int MSG_CTRUNC;
extern const int MSG_DONTROUTE;
extern const int MSG_DONTWAIT;
extern const int MSG_EOF;
extern const int MSG_EOR;
extern const int MSG_ERRQUEUE;
extern const int MSG_EXCEPT;
extern const int MSG_FASTOPEN;
extern const int MSG_FIN;
extern const int MSG_INFO;
extern const int MSG_MCAST;
extern const int MSG_MORE;
extern const int MSG_NOERROR;
extern const int MSG_NOSIGNAL;
extern const int MSG_NOTIFICATION;
extern const int MSG_OOB;
extern const int MSG_PARITY_ERROR;
extern const int MSG_PEEK;
extern const int MSG_PROXY;
extern const int MSG_RST;
extern const int MSG_STAT;
extern const int MSG_SYN;
extern const int MSG_TRUNC;
extern const int MSG_WAITALL;
extern const int MSG_WAITFORONE;
extern const int MSG_NOSIGNAL;
extern const int MSG_TRUNC;
extern const int MSG_CTRUNC;
extern const int MSG_FASTOPEN; /* linux only */
#define MSG_OOB 1
#define MSG_PEEK 2
#define MSG_DONTROUTE 4
#define MSG_DONTWAIT MSG_DONTWAIT
#define MSG_FASTOPEN MSG_FASTOPEN
#define MSG_NOSIGNAL MSG_NOSIGNAL
#define MSG_WAITALL MSG_WAITALL
#define MSG_TRUNC MSG_TRUNC
#define MSG_CTRUNC MSG_CTRUNC