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Put more thought into i/o polyfills

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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
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GPG key ID: BE714B4575D6E328
52 changed files with 679 additions and 487 deletions
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20
libc/runtime/enable_tls.c
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@ -24,6 +24,7 @@
#include "libc/intrin/asancodes.h"
#include "libc/intrin/atomic.h"
#include "libc/intrin/dll.h"
#include "libc/intrin/getenv.internal.h"
#include "libc/intrin/weaken.h"
#include "libc/macros.internal.h"
#include "libc/nt/files.h"
@ -48,6 +49,18 @@ extern unsigned char __tls_add_nt_rax[];
_Alignas(TLS_ALIGNMENT) static char __static_tls[6016];
static unsigned long ParseMask(const char *str) {
int c;
unsigned long x = 0;
if (str) {
while ((c = *str++)) {
x *= 10;
x += c - '0';
}
}
return x;
}
/**
* Enables thread local storage for main process.
*
@ -210,6 +223,13 @@ textstartup void __enable_tls(void) {
atomic_store_explicit(&tib->tib_tid, tid, memory_order_relaxed);
// TODO(jart): set_tid_address?
// inherit signal mask
if (IsWindows()) {
atomic_store_explicit(&tib->tib_sigmask,
ParseMask(__getenv(environ, "_MASK").s),
memory_order_relaxed);
}
// initialize posix threads
_pthread_static.tib = tib;
_pthread_static.pt_flags = PT_STATIC;