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Avoid linking win32 signals impl

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This shaves ~4kb off o/tiny/examples/hello2.com by avoiding linking the
WIN32 signals polyfill unless sigaction() is being used.

See #965
This commit is contained in:
Justine Tunney 2023-11-29 04:09:31 -08:00
parent 2b960bb249
commit 70155df7a9
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GPG key ID: BE714B4575D6E328
8 changed files with 37 additions and 31 deletions
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9
libc/sock/winsockblock.c
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@ -20,6 +20,7 @@
#include "libc/calls/sig.internal.h"
#include "libc/calls/struct/sigset.h"
#include "libc/errno.h"
#include "libc/intrin/weaken.h"
#include "libc/nt/enum/wait.h"
#include "libc/nt/errors.h"
#include "libc/nt/struct/overlapped.h"
@ -42,7 +43,9 @@ RestartOperation:
int rc, sig, reason = 0;
uint32_t status, exchanged;
if (_check_cancel() == -1) return -1; // ECANCELED
if ((sig = __sig_get(waitmask))) goto HandleInterrupt;
if (_weaken(__sig_get) && (sig = _weaken(__sig_get)(waitmask))) {
goto HandleInterrupt;
}
struct NtOverlapped overlap = {.hEvent = WSACreateEvent()};
rc = StartSocketOp(handle, &overlap, &flags, arg);
@ -87,9 +90,9 @@ RestartOperation:
errno = reason;
return -1;
}
if ((sig = __sig_get(waitmask))) {
if (_weaken(__sig_get) && (sig = _weaken(__sig_get)(waitmask))) {
HandleInterrupt:
int handler_was_called = __sig_relay(sig, SI_KERNEL, waitmask);
int handler_was_called = _weaken(__sig_relay)(sig, SI_KERNEL, waitmask);
if (_check_cancel() == -1) return -1;
if (handler_was_called != 1) goto RestartOperation;
}