threaded
Avril 4 years ago
parent 0404cc699d
commit 9ce9cb8c95
Signed by: flanchan
GPG Key ID: 284488987C31F630

@ -0,0 +1,26 @@
#ifndef _VECTOR_H
#define _VECTOR_H
#include <stdlib.h>
#include <stdbool.h>
typedef struct {
size_t len, cap;
size_t element, scap;
void* ptr;
} vec_t;
#define VEC_DEFAULT_CAP 16
vec_t vec_new_with_cap(size_t elem, size_t cap);
void vec_push(vec_t* restrict self, const void* restrict item);
bool vec_pop(vec_t* restrict self, void* restrict item);
void* vec_index(const vec_t* restrict self, size_t i);
vec_t vec_clone(const vec_t* restrict self);
__attribute__((gnu_inline)) inline extern vec_t vec_new(size_t elem) { return vec_new_with_cap(elem, VEC_DEFAULT_CAP); }
__attribute__((gnu_inline)) inline extern void vec_free(vec_t v) { free(v.ptr); }
#endif /* _VECTOR_H */

@ -0,0 +1,61 @@
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <vector.h>
__attribute__((gnu_inline)) inline static void* die_if_null(void* ptr)
{
if (!ptr) abort();
return ptr;
}
vec_t vec_new_with_cap(size_t elem, size_t cap) {
return (vec_t){
.len =0,
.cap = cap,
.scap = cap,
.element = elem,
.ptr = die_if_null(calloc(elem, cap)),
};
}
static inline void vec_extend_one(vec_t* restrict self)
{
self->ptr = die_if_null(reallocarray(self->ptr, self->element, (self->cap+=self->scap)));
}
void* vec_index(const vec_t* restrict self, size_t i)
{
if (i >= self->len) return NULL;
return (void*)(((uintptr_t)self->ptr)+ (self->element*i));
}
void vec_push(vec_t* restrict self, const void* restrict item)
{
if (self->len >= self->cap) {
vec_extend_one(self);
}
memcpy(die_if_null(vec_index(self, self->len++)), item, self->element);
}
bool vec_pop(vec_t* restrict self, void* restrict item)
{
if (self->len>0) {
memcpy(item, die_if_null(vec_index(self, self->len--)), self->element);
return true;
} else return false;
}
vec_t vec_clone(const vec_t* restrict self)
{
register vec_t new = {
.len = self->len,
.cap = self->cap,
.element = self->element,
.scap = self->scap,
.ptr = die_if_null(calloc(self->element, self->cap)),
};
memcpy(self->ptr, new.ptr, new.len * new.element);
return new;
}
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