mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-29 14:00:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Put more thought into i/o polyfills

Browse source 
wait4() is now solid enough to run `make -j100` on Windows. You can now
use MSG_DONTWAIT on Windows. There was a handle leak in accept() that's
been fixed. Our WIN32 overlapped i/o code has been simplified. Priority
class now inherits into subprocesses, so the verynice command will work
and the signal mask will now be inherited by execve() and posix_spawn()
This commit is contained in:
Justine Tunney 2023-11-06 16:38:44 -08:00
parent 736fdb757a
commit e961385e55
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
52 changed files with 679 additions and 487 deletions
Download patch file Download diff file Expand all files Collapse all files

2
libc/intrin/createfile.c
View file

@ -71,7 +71,7 @@ TryAgain:
switch (__imp_GetLastError()) {
case kNtErrorPipeBusy:
if (micros >= 1024) __imp_Sleep(micros / 1024);
if (micros / 1024 < __SIG_IO_INTERVAL_MS) micros <<= 1;
if (micros < 1024 * 1024) micros <<= 1;
goto TryAgain;
case kNtErrorAccessDenied:
// GetNtOpenFlags() always greedily requests execute permissions

2
libc/intrin/createnamedpipe.c
View file

@ -50,7 +50,7 @@ TryAgain:
nDefaultTimeOutMs, opt_lpSecurityAttributes);
if (hServer == -1 && __imp_GetLastError() == kNtErrorPipeBusy) {
if (micros >= 1024) __imp_Sleep(micros / 1024);
if (micros / 1024 < __SIG_IO_INTERVAL_MS) micros <<= 1;
if (micros < 1024 * 1024) micros <<= 1;
goto TryAgain;
}
if (hServer == -1) __winerr();

4
libc/intrin/pthread_unref.c
View file

@ -23,9 +23,7 @@
static bool _pthread_deref(struct PosixThread *pt) {
int refs = atomic_load_explicit(&pt->pt_refs, memory_order_acquire);
if (!refs) return true;
unassert(refs > 0);
return !atomic_fetch_sub(&pt->pt_refs, 1);
return !refs || !atomic_fetch_sub(&pt->pt_refs, 1);
}
void _pthread_unref(struct PosixThread *pt) {

2
libc/intrin/sigprocmask-nt.c
View file

@ -42,7 +42,7 @@ textwindows int __sig_mask(int how, const sigset_t *neu, sigset_t *old) {
if (how == SIG_BLOCK) {
oldmask = atomic_fetch_or_explicit(mask, *neu, memory_order_acq_rel);
} else if (how == SIG_UNBLOCK) {
oldmask = atomic_fetch_and_explicit(mask, *neu, memory_order_acq_rel);
oldmask = atomic_fetch_and_explicit(mask, ~*neu, memory_order_acq_rel);
} else { // SIG_SETMASK
oldmask = atomic_exchange_explicit(mask, *neu, memory_order_acq_rel);
}

8
libc/intrin/wsarecv.c
View file

@ -30,9 +30,7 @@ __msabi extern typeof(WSARecv) *const __imp_WSARecv;
/**
* Receives data from Windows socket.
*
* @return 0 on success, or -1 on failure
* @note this wrapper takes care of ABI, STRACE(), and __winerr()
*/
textwindows int WSARecv(
uint64_t s, const struct NtIovec *inout_lpBuffers, uint32_t dwBufferCount,
@ -57,9 +55,6 @@ textwindows int WSARecv(
if (opt_out_lpNumberOfBytesRecvd) {
*opt_out_lpNumberOfBytesRecvd = NumberOfBytesRecvd;
}
if (rc == -1) {
__winsockerr();
}
if (UNLIKELY(__strace > 0) && strace_enabled(0) > 0) {
kprintf(STRACE_PROLOGUE "WSARecv(%lu, [", s);
DescribeIovNt(inout_lpBuffers, dwBufferCount,
@ -73,9 +68,6 @@ textwindows int WSARecv(
rc = __imp_WSARecv(s, inout_lpBuffers, dwBufferCount,
opt_out_lpNumberOfBytesRecvd, inout_lpFlags,
opt_inout_lpOverlapped, opt_lpCompletionRoutine);
if (rc == -1) {
__winsockerr();
}
#endif
return rc;
}

8
libc/intrin/wsarecvfrom.c
View file

@ -29,9 +29,7 @@ __msabi extern typeof(WSARecvFrom) *const __imp_WSARecvFrom;
/**
* Receives data from Windows socket.
*
* @return 0 on success, or -1 on failure
* @note this wrapper takes care of ABI, STRACE(), and __winerr()
*/
textwindows int WSARecvFrom(
uint64_t s, const struct NtIovec *inout_lpBuffers, uint32_t dwBufferCount,
@ -52,9 +50,6 @@ textwindows int WSARecvFrom(
if (opt_out_lpNumberOfBytesRecvd) {
*opt_out_lpNumberOfBytesRecvd = NumberOfBytesRecvd;
}
if (rc == -1) {
__winerr();
}
if (UNLIKELY(__strace > 0) && strace_enabled(0) > 0) {
kprintf(STRACE_PROLOGUE "WSARecvFrom(%lu, [", s);
DescribeIovNt(inout_lpBuffers, dwBufferCount,
@ -69,9 +64,6 @@ textwindows int WSARecvFrom(
opt_out_lpNumberOfBytesRecvd, inout_lpFlags,
opt_out_fromsockaddr, opt_inout_fromsockaddrlen,
opt_inout_lpOverlapped, opt_lpCompletionRoutine);
if (rc == -1) {
__winerr();
}
#endif
return rc;
}