2022-05-23 22:06:11 +00:00
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#ifndef COSMOPOLITAN_LIBC_CALLS_SYSCALL_NT_INTERNAL_H_
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#define COSMOPOLITAN_LIBC_CALLS_SYSCALL_NT_INTERNAL_H_
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COSMOPOLITAN_C_START_
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Make improvements
- We now serialize the file descriptor table when spawning / executing
processes on Windows. This means you can now inherit more stuff than
just standard i/o. It's needed by bash, which duplicates the console
to file descriptor #255. We also now do a better job serializing the
environment variables, so you're less likely to encounter E2BIG when
using your bash shell. We also no longer coerce environ to uppercase
- execve() on Windows now remotely controls its parent process to make
them spawn a replacement for itself. Then it'll be able to terminate
immediately once the spawn succeeds, without having to linger around
for the lifetime as a shell process for proxying the exit code. When
process worker thread running in the parent sees the child die, it's
given a handle to the new child, to replace it in the process table.
- execve() and posix_spawn() on Windows will now provide CreateProcess
an explicit handle list. This allows us to remove handle locks which
enables better fork/spawn concurrency, with seriously correct thread
safety. Other codebases like Go use the same technique. On the other
hand fork() still favors the conventional WIN32 inheritence approach
which can be a little bit messy, but is *controlled* by guaranteeing
perfectly clean slates at both the spawning and execution boundaries
- sigset_t is now 64 bits. Having it be 128 bits was a mistake because
there's no reason to use that and it's only supported by FreeBSD. By
using the system word size, signal mask manipulation on Windows goes
very fast. Furthermore @asyncsignalsafe funcs have been rewritten on
Windows to take advantage of signal masking, now that it's much more
pleasant to use.
- All the overlapped i/o code on Windows has been rewritten for pretty
good signal and cancelation safety. We're now able to ensure overlap
data structures are cleaned up so long as you don't longjmp() out of
out of a signal handler that interrupted an i/o operation. Latencies
are also improved thanks to the removal of lots of "busy wait" code.
Waits should be optimal for everything except poll(), which shall be
the last and final demon we slay in the win32 i/o horror show.
- getrusage() on Windows is now able to report RUSAGE_CHILDREN as well
as RUSAGE_SELF, thanks to aggregation in the process manager thread.
2023-10-08 12:36:18 +00:00
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bool32 sys_isatty(int);
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2023-07-24 15:31:54 +00:00
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int sys_chdir_nt(const char *);
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int sys_close_epoll_nt(int);
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int sys_dup_nt(int, int, int, int);
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int sys_execve_nt(const char *, char *const[], char *const[]);
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int sys_faccessat_nt(int, const char *, int, uint32_t);
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int sys_fadvise_nt(int, uint64_t, uint64_t, int);
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int sys_fchdir_nt(int);
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2023-10-15 03:57:15 +00:00
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int sys_fchmod_nt(int, uint32_t);
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2023-07-24 15:31:54 +00:00
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int sys_fchmodat_nt(int, const char *, uint32_t, int);
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int sys_fcntl_nt(int, int, uintptr_t);
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2023-09-07 23:03:19 +00:00
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int sys_fdatasync_nt(int, bool);
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2023-07-24 15:31:54 +00:00
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int sys_flock_nt(int, int);
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int sys_fork_nt(uint32_t);
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2023-09-07 23:03:19 +00:00
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int sys_fsync_fake(int);
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2023-07-24 15:31:54 +00:00
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int sys_ftruncate_nt(int64_t, uint64_t);
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int sys_getloadavg_nt(double *, int);
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int sys_getppid_nt(void);
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int sys_getpriority_nt(int, unsigned);
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int sys_kill_nt(int, int);
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int sys_linkat_nt(int, const char *, int, const char *);
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int sys_madvise_nt(void *, size_t, int);
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int sys_mkdirat_nt(int, const char *, uint32_t);
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int sys_msync_nt(char *, size_t, int);
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2023-09-06 10:54:42 +00:00
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int sys_open_nt(int, const char *, uint32_t, int32_t) __wur;
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2023-07-24 15:31:54 +00:00
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int sys_pipe_nt(int[hasatleast 2], unsigned);
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int sys_renameat_nt(int, const char *, int, const char *);
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int sys_sched_yield_nt(void);
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int sys_setpriority_nt(int, unsigned, int);
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int sys_symlinkat_nt(const char *, int, const char *);
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int sys_sync_nt(void);
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int sys_truncate_nt(const char *, uint64_t);
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int sys_unlinkat_nt(int, const char *, int);
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int64_t sys_lseek_nt(int, int64_t, int);
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2023-09-07 23:03:19 +00:00
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ssize_t sys_read_nt_impl(int, void *, size_t, int64_t);
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2023-07-24 15:31:54 +00:00
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ssize_t sys_readlinkat_nt(int, const char *, char *, size_t);
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2022-05-23 22:06:11 +00:00
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_CALLS_SYSCALL_NT_INTERNAL_H_ */
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