diff options
| author | flu0r1ne <flu0r1ne@flu0r1ne.net> | 2022-10-30 19:30:29 -0500 |
|---|---|---|
| committer | flu0r1ne <flu0r1ne@flu0r1ne.net> | 2022-10-30 19:30:29 -0500 |
| commit | 20e52f326cdf1b6c2ca9b2c0b5be07637d9196d2 (patch) | |
| tree | 1d957cfd5ca8b9ccd0a91fa5d5415599edd241d1 /util/util.h | |
| download | qidx-20e52f326cdf1b6c2ca9b2c0b5be07637d9196d2.tar.xz qidx-20e52f326cdf1b6c2ca9b2c0b5be07637d9196d2.zip | |
Initial commit
Diffstat (limited to 'util/util.h')
| -rw-r--r-- | util/util.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/util/util.h b/util/util.h new file mode 100644 index 0000000..ef378ca --- /dev/null +++ b/util/util.h @@ -0,0 +1,78 @@ +#ifndef UTIL_H +#define UTIL_H + +#include <stdarg.h> +#include <stddef.h> +#include <stdlib.h> +#include <stdbool.h> + +#if defined(__GNUC__) || defined(__clang__) +# define NORETURN __attribute__((__noreturn__)) +#else +# define NORETURN +#endif + +#if defined(__GNUC__) +# define UNUSED __attribute__((__unused__)) +#else +# define UNUSED +#endif + +#define N_ENTRIES(x) (sizeof(x) / sizeof(*x)) +#define member_size(type, member) sizeof(((type *)(0))->member) +#define TYPEOF(x) __typeof__(x) + +#define PACKED __attribute__((__packed__)) + +#if defined(__GNUC__) +# define FALLTHROUGH __attribute__ ((fallthrough)) +#else +# define FALLTHROUGH +#endif + +NORETURN void die(const char *format, ...) __attribute__((format (printf, 1, 2))); +NORETURN void die_errno(const char *format, ...) __attribute__((format (printf, 1, 2))); + +void err(const char * format, ...) __attribute__((format (printf, 1, 2))); +void err_errno(const char * format, ...) __attribute__((format (printf, 1, 2))); + +#define XREALLOC_ARRAY(x, alloc) ((x) = xrealloc((x), (alloc) * sizeof(*(x)))) +#define ALLOC_ARRAY(x, n) (malloc((n) * sizeof(*x))) + +#define ALIGN_ADDR_MASK(addr, mask) \ + ((addr + ((mask) - 1)) & ~((mask) - 1)) + +#define ALIGN_ADDR_16(addr) ALIGN_ADDR_MASK(addr, 0x10) +#define ALIGN_ADDR_32(addr) ALIGN_ADDR_MASK(addr, 0x20) +#define ALIGN_ADDR_64(addr) ALIGN_ADDR_MASK(addr, 0x40) +#define ALIGN_ADDR(addr, bytes) ALIGN_ADDR_MASK(addr, (8ULL*(bytes))) + +// Scaling: 0, 24, 66, 140, 269, 495, 890 +#define ALLOC_NC(x) (((x)+14)*7/4) + +#define AM_RESIZE_ALLOC(buf, sz, cap, item_sz, alloc_nc) \ + do { \ + TYPEOF(sz) _sz = (sz); \ + if((cap) < _sz) { \ + void * nb; \ + TYPEOF(cap) nc; \ + if(_sz < alloc_nc((cap))) { \ + nc = alloc_nc((cap)); \ + } else { \ + nc = _sz; \ + } \ + nb = realloc((buf), (item_sz) * nc); \ + if(nb) { \ + (cap) = nc; \ + (buf) = nb; \ + } else { \ + free((buf)); \ + (buf) = NULL; \ + } \ + } \ + } while(0) + +#define AM_RESIZE(buf, sz, cap) \ + AM_RESIZE_ALLOC(buf, sz, cap, sizeof(*buf), ALLOC_NC) + +#endif |