shithub: sl

ref: 41efd510e5a866a1a87c55f8fb557c9ad2abaecb
dir: /mem.c/

#include "platform.h"

#if defined(MEM_NEED_ALIGNED)
void *
fl_malloc(size_t sz)
{
	uint8_t *p = malloc(sz+1+7);
	assert(p != nil);
	uint8_t *a = (uint8_t*)(((uintptr_t)p+1+7) & ~(uintptr_t)7);
	a[-1] = a-p;
	return a;
}

void *
fl_calloc(size_t n, size_t esz)
{
	size_t sz = n*esz;
	assert(sz >= esz);
	uint8_t *p = fl_malloc(sz);
	memset(p, 0, sz);
	return p;
}

void *
fl_realloc(void *a_, size_t sz)
{
	uint8_t *a = a_;
	assert(((uintptr_t)a & 7) == 0);
	uint8_t *p = a != nil ? a - a[-1] : nil;
	p = realloc(p, sz+1+7);
	assert(p != nil);
	a = (uint8_t*)(((uintptr_t)p+1+7) & ~(uintptr_t)7);
	a[-1] = a-p;
	return a;
}

void
fl_free(void *a_)
{
	uint8_t *a = a_;
	if(a == nil)
		return;
	assert(((uintptr_t)a & 7) == 0);
	uint8_t *p = a - a[-1];
	free(p);
}

char *
fl_strdup(const char *s)
{
	size_t sz = strlen(s)+1;
	char *p = fl_malloc(sz);
	memcpy(p, s, sz);
	return p;
}
#endif