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zig/std/c.zig

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`@import("builtin")` instead of `@compileVar` See #226 Closes #220
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const builtin = @import("builtin");
behavior tests passing on Linux
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const std = @import("std");
const page_size = std.mem.page_size;
extract posix functions from std/os.zig to std/os/posix.zig See #2380
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run zig fmt to update `use` to `usingnamespace`
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pub usingnamespace @import("os/bits.zig");
improvements for windows and libc integration * standard library knows if it is linking against libc and will sometimes call libc functions in that case instead of providing redundant definitions * fix infinite loop bug when resolving use declarations * allow calling the same C function from different C imports. closes #277 * push more logic from compiler to std/bootstrap.zig * standard library provides way to access errno closes #274 * fix compile error in standard library for windows * add implementation of getRandomBytes for windows
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run zig fmt to update `use` to `usingnamespace`
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pub usingnamespace switch (builtin.os) {
rename "posix" to "bits"
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.linux => @import("c/linux.zig"),
extract posix functions from std/os.zig to std/os/posix.zig See #2380
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.windows => @import("c/windows.zig"),
.macosx, .ios, .tvos, .watchos => @import("c/darwin.zig"),
.freebsd => @import("c/freebsd.zig"),
.netbsd => @import("c/netbsd.zig"),
this empty import workaround no longer necessary
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else => struct {},
improvements for windows and libc integration * standard library knows if it is linking against libc and will sometimes call libc functions in that case instead of providing redundant definitions * fix infinite loop bug when resolving use declarations * allow calling the same C function from different C imports. closes #277 * push more logic from compiler to std/bootstrap.zig * standard library provides way to access errno closes #274 * fix compile error in standard library for windows * add implementation of getRandomBytes for windows
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};
fixes for windows to build self hosted compiler
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pub fn getErrno(rc: var) u16 {
extract posix functions from std/os.zig to std/os/posix.zig See #2380
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if (rc == -1) {
fixes for windows to build self hosted compiler
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return @intCast(u16, _errno().*);
extract posix functions from std/os.zig to std/os/posix.zig See #2380
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} else {
return 0;
}
}
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
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// TODO https://github.com/ziglang/zig/issues/265 on this whole file
add preliminary windows support to std.io.COutStream
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pub extern "c" fn fopen(filename: [*]const u8, modes: [*]const u8) ?*FILE;
pub extern "c" fn fclose(stream: *FILE) c_int;
translate-c: a little closer to self-hosted implementation
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pub extern "c" fn fwrite(ptr: [*]const u8, size_of_type: usize, item_count: usize, stream: *FILE) usize;
pub extern "c" fn fread(ptr: [*]u8, size_of_type: usize, item_count: usize, stream: *FILE) usize;
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
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pub extern "c" fn abort() noreturn;
pub extern "c" fn exit(code: c_int) noreturn;
more progress on posix API layer see #2380
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pub extern "c" fn isatty(fd: fd_t) c_int;
pub extern "c" fn close(fd: fd_t) c_int;
use close$NOCANCEL on darwin
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pub extern "c" fn @"close$NOCANCEL"(fd: fd_t) c_int;
more progress on posix API layer see #2380
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pub extern "c" fn fstat(fd: fd_t, buf: *Stat) c_int;
pub extern "c" fn @"fstat$INODE64"(fd: fd_t, buf: *Stat) c_int;
pub extern "c" fn lseek(fd: fd_t, offset: isize, whence: c_int) isize;
behavior tests passing on Linux
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pub extern "c" fn open(path: [*]const u8, oflag: c_uint, ...) c_int;
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
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pub extern "c" fn raise(sig: c_int) c_int;
more progress on posix API layer see #2380
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pub extern "c" fn read(fd: fd_t, buf: [*]u8, nbyte: usize) isize;
pub extern "c" fn pread(fd: fd_t, buf: [*]u8, nbyte: usize, offset: u64) isize;
tests passing on linux
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pub extern "c" fn preadv(fd: c_int, iov: [*]const iovec, iovcnt: c_uint, offset: usize) isize;
pub extern "c" fn pwritev(fd: c_int, iov: [*]const iovec_const, iovcnt: c_uint, offset: usize) isize;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
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pub extern "c" fn stat(noalias path: [*]const u8, noalias buf: *Stat) c_int;
more progress on posix API layer see #2380
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pub extern "c" fn write(fd: fd_t, buf: [*]const u8, nbyte: usize) isize;
pub extern "c" fn pwrite(fd: fd_t, buf: [*]const u8, nbyte: usize, offset: u64) isize;
behavior tests passing on Linux
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pub extern "c" fn mmap(addr: ?*align(page_size) c_void, len: usize, prot: c_uint, flags: c_uint, fd: fd_t, offset: isize) *c_void;
pub extern "c" fn munmap(addr: *align(page_size) c_void, len: usize) c_int;
pub extern "c" fn mprotect(addr: *align(page_size) c_void, len: usize, prot: c_uint) c_int;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
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pub extern "c" fn unlink(path: [*]const u8) c_int;
pub extern "c" fn getcwd(buf: [*]u8, size: usize) ?[*]u8;
tests passing on linux
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pub extern "c" fn waitpid(pid: c_int, stat_loc: *c_uint, options: c_uint) c_int;
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
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pub extern "c" fn fork() c_int;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
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pub extern "c" fn access(path: [*]const u8, mode: c_uint) c_int;
more progress on posix API layer see #2380
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pub extern "c" fn pipe(fds: *[2]fd_t) c_int;
pub extern "c" fn pipe2(fds: *[2]fd_t, flags: u32) c_int;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
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pub extern "c" fn mkdir(path: [*]const u8, mode: c_uint) c_int;
pub extern "c" fn symlink(existing: [*]const u8, new: [*]const u8) c_int;
pub extern "c" fn rename(old: [*]const u8, new: [*]const u8) c_int;
pub extern "c" fn chdir(path: [*]const u8) c_int;
pub extern "c" fn execve(path: [*]const u8, argv: [*]const ?[*]const u8, envp: [*]const ?[*]const u8) c_int;
more progress on posix API layer see #2380
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pub extern "c" fn dup(fd: fd_t) c_int;
pub extern "c" fn dup2(old_fd: fd_t, new_fd: fd_t) c_int;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
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pub extern "c" fn readlink(noalias path: [*]const u8, noalias buf: [*]u8, bufsize: usize) isize;
pub extern "c" fn realpath(noalias file_name: [*]const u8, noalias resolved_name: [*]u8) ?[*]u8;
use * for pointer type instead of & See #770 To help automatically translate code, see the zig-fmt-pointer-reform-2 branch. This will convert all & into *. Due to the syntax ambiguity (which is why we are making this change), even address-of & will turn into *, so you'll have to manually fix thes instances. You will be guaranteed to get compile errors for them - expected 'type', found 'foo'
2018-05-31 07:56:59 -07:00
pub extern "c" fn sigprocmask(how: c_int, noalias set: *const sigset_t, noalias oset: ?*sigset_t) c_int;
darwin: fix incorrect timeval struct type closes #1648 I also added some more extern functions for darwin time functions, although nothing depends on them currently.
2019-01-31 15:47:45 -08:00
pub extern "c" fn gettimeofday(noalias tv: ?*timeval, noalias tz: ?*timezone) c_int;
use * for pointer type instead of & See #770 To help automatically translate code, see the zig-fmt-pointer-reform-2 branch. This will convert all & into *. Due to the syntax ambiguity (which is why we are making this change), even address-of & will turn into *, so you'll have to manually fix thes instances. You will be guaranteed to get compile errors for them - expected 'type', found 'foo'
2018-05-31 07:56:59 -07:00
pub extern "c" fn sigaction(sig: c_int, noalias act: *const Sigaction, noalias oact: ?*Sigaction) c_int;
pub extern "c" fn nanosleep(rqtp: *const timespec, rmtp: ?*timespec) c_int;
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
2018-01-25 01:10:11 -08:00
pub extern "c" fn setreuid(ruid: c_uint, euid: c_uint) c_int;
pub extern "c" fn setregid(rgid: c_uint, egid: c_uint) c_int;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
2018-06-03 22:09:15 -07:00
pub extern "c" fn rmdir(path: [*]const u8) c_int;
extract posix functions from std/os.zig to std/os/posix.zig See #2380
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pub extern "c" fn getenv(name: [*]const u8) ?[*]u8;
freebsd fixes
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pub extern "c" fn sysctl(name: [*]const c_int, namelen: c_uint, oldp: ?*c_void, oldlenp: ?*usize, newp: ?*c_void, newlen: usize) c_int;
more progress on posix API layer see #2380
2019-05-19 22:15:23 -07:00
pub extern "c" fn sysctlbyname(name: [*]const u8, oldp: ?*c_void, oldlenp: ?*usize, newp: ?*c_void, newlen: usize) c_int;
pub extern "c" fn sysctlnametomib(name: [*]const u8, mibp: ?*c_int, sizep: ?*usize) c_int;
pub extern "c" fn bind(socket: fd_t, address: ?*const sockaddr, address_len: socklen_t) c_int;
tests passing on linux
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pub extern "c" fn socket(domain: c_uint, sock_type: c_uint, protocol: c_uint) c_int;
pub extern "c" fn listen(sockfd: fd_t, backlog: c_uint) c_int;
pub extern "c" fn getsockname(sockfd: fd_t, noalias addr: *sockaddr, noalias addrlen: *socklen_t) c_int;
pub extern "c" fn connect(sockfd: fd_t, sock_addr: *const sockaddr, addrlen: socklen_t) c_int;
pub extern "c" fn accept4(sockfd: fd_t, addr: *sockaddr, addrlen: *socklen_t, flags: c_uint) c_int;
pub extern "c" fn getsockopt(sockfd: fd_t, level: c_int, optname: c_int, optval: *c_void, optlen: *socklen_t) c_int;
more progress on posix API layer see #2380
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pub extern "c" fn kill(pid: pid_t, sig: c_int) c_int;
starting to fix the regressions
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pub extern "c" fn getdirentries(fd: fd_t, buf_ptr: [*]u8, nbytes: usize, basep: *i64) isize;
more progress on posix API layer see #2380
2019-05-19 22:15:23 -07:00
pub extern "c" fn openat(fd: c_int, path: [*]const u8, flags: c_int) c_int;
pub extern "c" fn setgid(ruid: c_uint, euid: c_uint) c_int;
pub extern "c" fn setuid(uid: c_uint) c_int;
pub extern "c" fn clock_gettime(clk_id: c_int, tp: *timespec) c_int;
pub extern "c" fn clock_getres(clk_id: c_int, tp: *timespec) c_int;
Add c allocator (#542)
2017-10-17 05:13:04 -07:00
disallow unknown-length pointer to opaque This also means that translate-c has to detect when a pointer to opaque is happening, and use `*` instead of `[*]`. See #1059
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pub extern "c" fn aligned_alloc(alignment: usize, size: usize) ?*c_void;
pub extern "c" fn malloc(usize) ?*c_void;
breaking changes to std.mem.Allocator interface API Before, allocator implementations had to provide `allocFn`, `reallocFn`, and `freeFn`. Now, they must provide only `reallocFn` and `shrinkFn`. Reallocating from a zero length slice is allocation, and shrinking to a zero length slice is freeing. When the new memory size is less than or equal to the previous allocation size, `reallocFn` now has the option to return `error.OutOfMemory` to indicate that the allocator would not be able to take advantage of the new size. For more details see #1306. This commit closes #1306. This commit paves the way to solving #2009. This commit also introduces a memory leak to all coroutines. There is an issue where a coroutine calls the function and it frees its own stack frame, but then the return value of `shrinkFn` is a slice, which is implemented as an sret struct. Writing to the return pointer causes invalid memory write. We could work around it by having a global helper function which has a void return type and calling that instead. But instead this hack will suffice until I rework coroutines to be non-allocating. Basically coroutines are not supported right now until they are reworked as in #1194.
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pub extern "c" fn realloc(?*c_void, usize) ?*c_void;
disallow unknown-length pointer to opaque This also means that translate-c has to detect when a pointer to opaque is happening, and use `*` instead of `[*]`. See #1059
2018-06-05 15:03:21 -07:00
pub extern "c" fn free(*c_void) void;
pub extern "c" fn posix_memalign(memptr: **c_void, alignment: usize, size: usize) c_int;
*WIP* use pthreads when linking libc
2018-04-28 20:30:13 -07:00
more progress on posix API layer see #2380
2019-05-19 22:15:23 -07:00
pub extern "c" fn pthread_create(noalias newthread: *pthread_t, noalias attr: ?*const pthread_attr_t, start_routine: extern fn (?*c_void) ?*c_void, noalias arg: ?*c_void) c_int;
pub extern "c" fn pthread_attr_init(attr: *pthread_attr_t) c_int;
pub extern "c" fn pthread_attr_setstack(attr: *pthread_attr_t, stackaddr: *c_void, stacksize: usize) c_int;
pub extern "c" fn pthread_attr_destroy(attr: *pthread_attr_t) c_int;
pub extern "c" fn pthread_self() pthread_t;
pub extern "c" fn pthread_join(thread: pthread_t, arg_return: ?*?*c_void) c_int;
*WIP* use pthreads when linking libc
2018-04-28 20:30:13 -07:00
more progress on posix API layer see #2380
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pub extern "c" fn kqueue() c_int;
pub extern "c" fn kevent(
kq: c_int,
changelist: [*]const Kevent,
nchanges: c_int,
eventlist: [*]Kevent,
nevents: c_int,
timeout: ?*const timespec,
) c_int;