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… | |
| 278 | for (uint32_t idxvar, mask_ = mask; \ |
278 | for (uint32_t idxvar, mask_ = mask; \ |
| 279 | mask_ && ((idxvar = ecb_ctz32 (mask_)), mask_ &= ~(1 << idxvar), 1);) |
279 | mask_ && ((idxvar = ecb_ctz32 (mask_)), mask_ &= ~(1 << idxvar), 1);) |
| 280 | |
280 | |
| 281 | extern ssize_t slice_alloc; // statistics |
281 | extern ssize_t slice_alloc; // statistics |
| 282 | |
282 | |
| 283 | void *salloc_ (int n); |
283 | void *salloc_ (int n) noexcept; |
| 284 | void *salloc_ (int n, void *src); |
284 | void *salloc_ (int n, void *src) noexcept; |
| 285 | |
285 | |
| 286 | // strictly the same as g_slice_alloc, but never returns 0 |
286 | // strictly the same as g_slice_alloc, but never returns 0 |
| 287 | template<typename T> |
287 | template<typename T> |
| 288 | inline T *salloc (int n = 1) { return (T *)salloc_ (n * sizeof (T)); } |
288 | inline T *salloc (int n = 1) { return (T *)salloc_ (n * sizeof (T)); } |
| 289 | |
289 | |
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| 374 | sfree ((char *)p, s); |
374 | sfree ((char *)p, s); |
| 375 | } |
375 | } |
| 376 | }; |
376 | }; |
| 377 | |
377 | |
| 378 | // a STL-compatible allocator that uses g_slice |
378 | // a STL-compatible allocator that uses g_slice |
| 379 | // boy, this is verbose |
379 | // boy, this is much less verbose in newer C++ versions |
| 380 | template<typename Tp> |
380 | template<typename Tp> |
| 381 | struct slice_allocator |
381 | struct slice_allocator |
| 382 | { |
382 | { |
| 383 | typedef size_t size_type; |
383 | using value_type = Tp; |
| 384 | typedef ptrdiff_t difference_type; |
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| 385 | typedef Tp *pointer; |
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| 386 | typedef const Tp *const_pointer; |
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| 387 | typedef Tp &reference; |
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| 388 | typedef const Tp &const_reference; |
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| 389 | typedef Tp value_type; |
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| 390 | |
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| 391 | template <class U> |
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| 392 | struct rebind |
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| 393 | { |
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| 394 | typedef slice_allocator<U> other; |
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| 395 | }; |
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| 396 | |
384 | |
| 397 | slice_allocator () noexcept { } |
385 | slice_allocator () noexcept { } |
| 398 | slice_allocator (const slice_allocator &) noexcept { } |
386 | template<class U> slice_allocator (const slice_allocator<U> &) noexcept {} |
| 399 | template<typename Tp2> |
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| 400 | slice_allocator (const slice_allocator<Tp2> &) noexcept { } |
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| 401 | |
387 | |
| 402 | ~slice_allocator () { } |
388 | value_type *allocate (std::size_t n) |
| 403 | |
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| 404 | pointer address (reference x) const { return &x; } |
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| 405 | const_pointer address (const_reference x) const { return &x; } |
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| 406 | |
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| 407 | pointer allocate (size_type n, const_pointer = 0) |
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| 408 | { |
389 | { |
| 409 | return salloc<Tp> (n); |
390 | return salloc<Tp> (n); |
| 410 | } |
391 | } |
| 411 | |
392 | |
| 412 | void deallocate (pointer p, size_type n) |
393 | void deallocate (value_type *p, std::size_t n) |
| 413 | { |
394 | { |
| 414 | sfree<Tp> (p, n); |
395 | sfree<Tp> (p, n); |
| 415 | } |
396 | } |
| 416 | |
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| 417 | size_type max_size () const noexcept |
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| 418 | { |
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| 419 | return size_t (-1) / sizeof (Tp); |
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| 420 | } |
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| 421 | |
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| 422 | void construct (pointer p, const Tp &val) |
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| 423 | { |
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| 424 | ::new (p) Tp (val); |
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| 425 | } |
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| 426 | |
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| 427 | void destroy (pointer p) |
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| 428 | { |
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| 429 | p->~Tp (); |
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| 430 | } |
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| 431 | }; |
397 | }; |
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398 | |
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399 | template<class T, class U> |
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400 | bool operator == (const slice_allocator<T> &, const slice_allocator<U> &) noexcept |
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401 | { |
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402 | return true; |
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403 | } |
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404 | |
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405 | template<class T, class U> |
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406 | bool operator != (const slice_allocator<T> &x, const slice_allocator<U> &y) noexcept |
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407 | { |
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408 | return !(x == y); |
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409 | } |
| 432 | |
410 | |
| 433 | // basically a memory area, but refcounted |
411 | // basically a memory area, but refcounted |
| 434 | struct refcnt_buf |
412 | struct refcnt_buf |
| 435 | { |
413 | { |
| 436 | char *data; |
414 | char *data; |
