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Make stdin pollable on Windows

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You can now play Super Mario Bros in CMD.EXE using Cosmopolitan! This is
thanks to a new worker thread that's spawned on Windows whenever any one
of poll(), select(), or ioctl(FIONREAD) is linked.
This commit is contained in:
Justine Tunney 2023-08-13 22:42:25 -07:00
parent ef6387ee5e
commit 9c0821def7
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GPG key ID: BE714B4575D6E328
15 changed files with 280 additions and 58 deletions
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12
libc/calls/struct/fd.internal.h
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@ -28,12 +28,24 @@ struct Fd {
int64_t extra;
};
struct StdinRelay {
_Atomic(uint32_t) once;
int64_t inisem; /* semaphore to delay 1st read */
int64_t handle; /* should == g_fds.p[0].handle */
int64_t reader; /* ReadFile() use this instead */
int64_t writer; /* only used by WinStdinThread */
};
struct Fds {
_Atomic(int) f; /* lowest free slot */
size_t n;
struct Fd *p, *e;
struct StdinRelay stdin;
};
int64_t __resolve_stdin_handle(int64_t);
void WinMainStdin(void);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_CALLS_STRUCT_FD_INTERNAL_H_ */