int sp_mapunlink(spfile *f) {
#ifdef _MSC_VER
if (f->map) {
sp_mapcut(f);
if (f->map)
sp_unmap(f);
}
#endif
return sp_filerm(f->file);
}
int sp_mapclose(spfile *f)
{
int rc = sp_mapcut(f);
if (spunlikely(rc == -1))
return -1;
if (f->map) {
rc = sp_unmap(f);
if (spunlikely(rc == -1))
return -1;
}
return sp_fileclose(f);
}
int sp_mapensure(spfile *f, uint64_t size, float grow)
{
if (splikely((f->used + size) < f->size))
return 0;
int rc = sp_unmap(f);
if (spunlikely(rc == -1))
return -1;
long double nsz = f->size * grow;
if (spunlikely(nsz < size))
nsz = size;
rc = sp_mapresize(f, (size_t)nsz);
if (spunlikely(rc == -1))
return -1;
return sp_map(f, PROT_READ | PROT_WRITE);
}
static inline int
sp_mapcut(spfile *f)
{
if (f->creat == 0)
return 0;
int rc = sp_mapsync(f);
if (spunlikely(rc == -1))
return -1;
rc = sp_unmap(f);
if (spunlikely(rc == -1))
return -1;
rc = sp_mapresize(f, f->used);
if (spunlikely(rc == -1))
return -1;
return 0;
}
int sp_mapunmap(spfile *f) {
return sp_unmap(f);
}
