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author | Thomas Bertschinger <tahbertschinger@gmail.com> | 2024-01-15 23:41:02 -0700 |
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committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 01:47:05 -0500 |
commit | f5baaf48e3e82b1caf9f5cd1207d4d6feba3a2e5 (patch) | |
tree | 59f7b0e4667df7a9d3d5a45725f2aaab3e79b4c5 /c_src/ccan/array_size/array_size.h | |
parent | fb35dbfdc5a9446fbb856dae5542b23963e28b89 (diff) |
move Rust sources to top level, C sources into c_src
This moves the Rust sources out of rust_src/ and into the top level.
Running the bcachefs executable out of the development tree is now:
$ ./target/release/bcachefs command
or
$ cargo run --profile release -- command
instead of "./bcachefs command".
Building and installing is still:
$ make && make install
Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'c_src/ccan/array_size/array_size.h')
-rw-r--r-- | c_src/ccan/array_size/array_size.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/c_src/ccan/array_size/array_size.h b/c_src/ccan/array_size/array_size.h new file mode 100644 index 00000000..0ca422a2 --- /dev/null +++ b/c_src/ccan/array_size/array_size.h @@ -0,0 +1,26 @@ +/* CC0 (Public domain) - see LICENSE file for details */ +#ifndef CCAN_ARRAY_SIZE_H +#define CCAN_ARRAY_SIZE_H +#include "config.h" +#include <ccan/build_assert/build_assert.h> + +/** + * ARRAY_SIZE - get the number of elements in a visible array + * @arr: the array whose size you want. + * + * This does not work on pointers, or arrays declared as [], or + * function parameters. With correct compiler support, such usage + * will cause a build error (see build_assert). + */ +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + _array_size_chk(arr)) + +#if HAVE_BUILTIN_TYPES_COMPATIBLE_P && HAVE_TYPEOF +/* Two gcc extensions. + * &a[0] degrades to a pointer: a different type from an array */ +#define _array_size_chk(arr) \ + BUILD_ASSERT_OR_ZERO(!__builtin_types_compatible_p(typeof(arr), \ + typeof(&(arr)[0]))) +#else +#define _array_size_chk(arr) 0 +#endif +#endif /* CCAN_ALIGNOF_H */ |