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zig/std/c.zig

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`@import("builtin")` instead of `@compileVar` See #226 Closes #220
2017-05-01 10:12:38 -07:00
const builtin = @import("builtin");
const Os = builtin.Os;
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
2017-03-22 23:59:58 -07:00
run zig fmt on some of the codebase See #1003
2018-05-26 15:16:39 -07:00
pub use switch (builtin.os) {
rename std lib files to new convention
2019-03-02 13:46:04 -08:00
Os.linux => @import("c/linux.zig"),
Os.windows => @import("c/windows.zig"),
Os.macosx, Os.ios => @import("c/darwin.zig"),
Os.freebsd => @import("c/freebsd.zig"),
Os.netbsd => @import("c/netbsd.zig"),
this empty import workaround no longer necessary
2019-03-13 10:45:51 -07:00
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
2017-03-22 23:59:58 -07:00
};
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
2018-06-03 22:09:15 -07:00
// TODO https://github.com/ziglang/zig/issues/265 on this whole file
translate-c: a little closer to self-hosted implementation
2019-04-21 14:24:58 -07:00
pub const FILE = @OpaqueType();
add preliminary windows support to std.io.COutStream
2019-04-24 21:24:25 -07:00
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
2019-04-21 14:24:58 -07:00
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' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
2018-01-25 01:10:11 -08:00
pub extern "c" fn abort() noreturn;
pub extern "c" fn exit(code: c_int) noreturn;
pub extern "c" fn isatty(fd: c_int) c_int;
pub extern "c" fn close(fd: c_int) c_int;
use * for pointer type instead of & See #770 To help automatically translate code, see the zig-fmt-pointer-reform-2 branch. This will convert all & into *. Due to the syntax ambiguity (which is why we are making this change), even address-of & will turn into *, so you'll have to manually fix thes instances. You will be guaranteed to get compile errors for them - expected 'type', found 'foo'
2018-05-31 07:56:59 -07:00
pub extern "c" fn fstat(fd: c_int, buf: *Stat) c_int;
pub extern "c" fn @"fstat$INODE64"(fd: c_int, buf: *Stat) 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 lseek(fd: c_int, offset: isize, whence: c_int) isize;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
2018-06-03 22:09:15 -07:00
pub extern "c" fn open(path: [*]const u8, oflag: c_int, ...) 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 raise(sig: c_int) c_int;
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 read(fd: c_int, buf: *c_void, nbyte: usize) isize;
std.event.fs support for macos The file I/O stuff is working, but the fs watching stuff is not yet.
2018-08-06 21:49:09 -07:00
pub extern "c" fn pread(fd: c_int, buf: *c_void, nbyte: usize, offset: u64) isize;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
2018-06-03 22:09:15 -07:00
pub extern "c" fn stat(noalias path: [*]const u8, noalias buf: *Stat) c_int;
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 write(fd: c_int, buf: *const c_void, nbyte: usize) isize;
std.event.fs support for macos The file I/O stuff is working, but the fs watching stuff is not yet.
2018-08-06 21:49:09 -07:00
pub extern "c" fn pwrite(fd: c_int, buf: *const c_void, nbyte: usize, offset: u64) isize;
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 mmap(addr: ?*c_void, len: usize, prot: c_int, flags: c_int, fd: c_int, offset: isize) ?*c_void;
munmap allows address 0 fixes test suite regression on macOS from previous commit
2019-03-25 13:04:25 -07:00
pub extern "c" fn munmap(addr: ?*c_void, len: usize) 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 unlink(path: [*]const u8) c_int;
pub extern "c" fn getcwd(buf: [*]u8, size: usize) ?[*]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 waitpid(pid: c_int, stat_loc: *c_int, options: c_int) 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 fork() 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 access(path: [*]const u8, mode: c_uint) c_int;
pub extern "c" fn pipe(fds: *[2]c_int) c_int;
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;
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 dup(fd: c_int) c_int;
pub extern "c" fn dup2(old_fd: c_int, new_fd: c_int) 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 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;
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
2018-06-05 15:03:21 -07:00
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.
2019-03-15 14:47:47 -07:00
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
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 "pthread" 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 "pthread" fn pthread_attr_init(attr: *pthread_attr_t) c_int;
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 "pthread" fn pthread_attr_setstack(attr: *pthread_attr_t, stackaddr: *c_void, stacksize: usize) 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 "pthread" fn pthread_attr_destroy(attr: *pthread_attr_t) c_int;
Add thread ID support to std.os.Thread (fixes #1316)
2018-08-02 14:44:20 -07:00
pub extern "pthread" fn pthread_self() pthread_t;
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 "pthread" 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
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 const pthread_t = *@OpaqueType();