/** Initialize allocated memory as a slab cache */
static void
_slab_cache_create(slab_cache_t *cache,
size_t size,
size_t align,
int (*constructor)(void *obj, int kmflag),
int (*destructor)(void *obj),
int flags)
{
int pages;
// ipl_t ipl;
// memsetb((uintptr_t)cache, sizeof(*cache), 0);
// cache->name = name;
//if (align < sizeof(unative_t))
// align = sizeof(unative_t);
// size = ALIGN_UP(size, align);
cache->size = size;
// cache->constructor = constructor;
// cache->destructor = destructor;
cache->flags = flags;
list_initialize(&cache->full_slabs);
list_initialize(&cache->partial_slabs);
list_initialize(&cache->magazines);
// spinlock_initialize(&cache->slablock, "slab_lock");
// spinlock_initialize(&cache->maglock, "slab_maglock");
// if (! (cache->flags & SLAB_CACHE_NOMAGAZINE))
// make_magcache(cache);
/* Compute slab sizes, object counts in slabs etc. */
/* Minimum slab order */
pages = SIZE2FRAMES(cache->size);
/* We need the 2^order >= pages */
if (pages <= 1)
cache->order = 0;
else
cache->order = fnzb(pages-1)+1;
while (badness(cache) > SLAB_MAX_BADNESS(cache)) {
cache->order += 1;
}
cache->objects = comp_objects(cache);
/* Add cache to cache list */
// ipl = interrupts_disable();
// spinlock_lock(&slab_cache_lock);
list_append(&cache->link, &slab_cache_list);
// spinlock_unlock(&slab_cache_lock);
// interrupts_restore(ipl);
}
int tex::vert_badness(int height)
{
int b;
if (cur_height < height) {
if (active_height[3] != 0
|| active_height[4] != 0
|| active_height[5] != 0) {
b = 0;
} else {
b = badness(height - cur_height, active_height[2]);
}
} else if (cur_height - height > active_height[6]) {
b = AWFUL_BAD;
} else {
b = badness(cur_height - height, active_height[6]);
}
return b;
}
int tex::page_badness ()
{
int b;
if (page_total < page_goal) {
if (page_so_far[3] != 0
|| page_so_far[4] != 0
|| page_so_far[5] != 0) {
b = 0;
} else {
b = badness(page_goal - page_total, page_so_far[2]);
}
} else if (page_total - page_goal > page_shrink) {
b = AWFUL_BAD;
} else {
b = badness(page_total - page_goal, page_shrink);
}
return b;
}
int
wordwrap (char *str, int n) {
DP[n] = 0;
for (i=n; i>=0; i++) {
for (j=i+1; j<n+1; j++) {
DP[i] = min (DP[i], badness(i,j));
}
}
}
/*
* Simple selection loop. We chose the process with the highest
* number of 'points'. We expect the caller will lock the tasklist.
*
* (not docbooked, we don't want this one cluttering up the manual)
*/
static struct task_struct * select_bad_process(void)
{
int maxpoints = 0;
struct task_struct *p = NULL;
struct task_struct *chosen = NULL;
for_each_task(p) {
if (p->pid) {
int points = badness(p);
if (points > maxpoints) {
chosen = p;
maxpoints = points;
}
}
}
return chosen;
}
static void possible_break(
CompositorIndex index, Coord* spans, CompositorIndex span_count,
Coord natural, Coord stretch, Coord shrink, int penalty,
int breakpenalty, BreakSet* breaks
) {
BreakSet* best_break = nil;
BreakSet* doomed;
int least_demerits;
BreakSet* b = breaks->next_;
while (b != breaks) {
Coord span = spans[Math::min(b->count_, span_count-1)];
b->no_break(natural, stretch, shrink);
int break_badness = badness(
span, b->natural_, b->stretch_, b->shrink_
);
boolean only_break = b == breaks->next_ && b->next_ == breaks;
if (penalty <= PenaltyGood) {
int break_demerits = demerits(
break_badness, penalty, breakpenalty
);
if (best_break == nil) {
b->add_break(index, break_demerits);
best_break = b;
least_demerits = b->demerits_;
} else if (b->demerits_ + break_demerits < least_demerits) {
delete best_break;
b->add_break(index, break_demerits);
best_break = b;
least_demerits = b->demerits_;
} else {
if (!only_break) {
doomed = b;
b = b->prev_;
delete doomed;
}
}
} else if (break_badness < -TOLERANCE) {
if (only_break) {
int break_demerits = demerits(
break_badness, penalty, breakpenalty
);
b->add_break(index, break_demerits);
best_break = b;
least_demerits = b->demerits_;
} else {
doomed = b;
b = b->prev_;
delete doomed;
}
} else if (break_badness <= TOLERANCE) {
int break_demerits = demerits(
break_badness, penalty, breakpenalty
);
if (best_break == nil) {
new BreakSet(b);
b = b->next_;
b->add_break(index, break_demerits);
best_break = b;
least_demerits = b->demerits_;
} else if (b->demerits_ + break_demerits < least_demerits) {
delete best_break;
new BreakSet(b);
b = b->next_;
b->add_break(index, break_demerits);
best_break = b;
least_demerits = b->demerits_;
}
}
b = b->next_;
}
}
int arr[256];
};
constexpr V v;
constexpr int get(const int *p) { return *p; } // expected-note {{read of dereferenced one-past-the-end pointer}}
constexpr int passLargeArray(V v) { return get(v.arr+256); } // expected-note {{in call to 'get(&v.arr[256])'}}
static_assert(passLargeArray(v) == 0, ""); // expected-error {{constant expression}} expected-note {{in call to 'passLargeArray({{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...}})'}}
union Union {
constexpr Union(int n) : b(n) {}
constexpr Union(const Union &u) : b(u.b) {}
int a, b;
};
constexpr Union myUnion = 76;
constexpr int badness(Union u) { return u.a + u.b; } // expected-note {{read of member 'a' of union with active member 'b'}}
static_assert(badness(myUnion), ""); // expected-error {{constant expression}} \
expected-note {{in call to 'badness({.b = 76})'}}
struct MemPtrTest {
int n;
void f();
};
MemPtrTest mpt; // expected-note {{here}}
constexpr int MemPtr(int (MemPtrTest::*a), void (MemPtrTest::*b)(), int &c) {
return c; // expected-note {{read of non-constexpr variable 'mpt'}}
}
static_assert(MemPtr(&MemPtrTest::n, &MemPtrTest::f, mpt.*&MemPtrTest::n), ""); // expected-error {{constant expression}} \
expected-note {{in call to 'MemPtr(&MemPtrTest::n, &MemPtrTest::f, mpt.n)'}}
template<typename CharT>
constexpr CharT get(const CharT *p) { return p[-1]; } // expected-note 5{{}}
