Subversion Repository Public Repository

Divide-Dependencies

This repository has no backups
This repository's network speed is throttled to 100KB/sec

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
//  lock-free freelist
//
//  Copyright (C) 2008-2013 Tim Blechmann
//
//  Distributed under the Boost Software License, Version 1.0. (See
//  accompanying file LICENSE_1_0.txt or copy at
//  http://www.boost.org/LICENSE_1_0.txt)

#ifndef BOOST_LOCKFREE_FREELIST_HPP_INCLUDED
#define BOOST_LOCKFREE_FREELIST_HPP_INCLUDED

#include <limits>
#include <memory>

#include <boost/array.hpp>
#include <boost/config.hpp>
#include <boost/cstdint.hpp>
#include <boost/noncopyable.hpp>
#include <boost/static_assert.hpp>

#include <boost/lockfree/detail/atomic.hpp>
#include <boost/lockfree/detail/parameter.hpp>
#include <boost/lockfree/detail/tagged_ptr.hpp>

#if defined(_MSC_VER)
#pragma warning(push)
#pragma warning(disable: 4100) // unreferenced formal parameter
#pragma warning(disable: 4127) // conditional expression is constant
#endif

namespace boost    {
namespace lockfree {
namespace detail   {

template <typename T,
          typename Alloc = std::allocator<T>
         >
class freelist_stack:
    Alloc
{
    struct freelist_node
    {
        tagged_ptr<freelist_node> next;
    };

    typedef tagged_ptr<freelist_node> tagged_node_ptr;

public:
    typedef tagged_ptr<T> tagged_node_handle;

    template <typename Allocator>
    freelist_stack (Allocator const & alloc, std::size_t n = 0):
        Alloc(alloc),
        pool_(tagged_node_ptr(NULL))
    {
        for (std::size_t i = 0; i != n; ++i) {
            T * node = Alloc::allocate(1);
#ifdef BOOST_LOCKFREE_FREELIST_INIT_RUNS_DTOR
            destruct<false>(node);
#else
            deallocate<false>(node);
#endif
        }
    }

    template <bool ThreadSafe>
    void reserve (std::size_t count)
    {
        for (std::size_t i = 0; i != count; ++i) {
            T * node = Alloc::allocate(1);
            deallocate<ThreadSafe>(node);
        }
    }

    template <bool ThreadSafe, bool Bounded>
    T * construct (void)
    {
        T * node = allocate<ThreadSafe, Bounded>();
        if (node)
            new(node) T();
        return node;
    }

    template <bool ThreadSafe, bool Bounded, typename ArgumentType>
    T * construct (ArgumentType const & arg)
    {
        T * node = allocate<ThreadSafe, Bounded>();
        if (node)
            new(node) T(arg);
        return node;
    }

    template <bool ThreadSafe, bool Bounded, typename ArgumentType1, typename ArgumentType2>
    T * construct (ArgumentType1 const & arg1, ArgumentType2 const & arg2)
    {
        T * node = allocate<ThreadSafe, Bounded>();
        if (node)
            new(node) T(arg1, arg2);
        return node;
    }

    template <bool ThreadSafe>
    void destruct (tagged_node_handle tagged_ptr)
    {
        T * n = tagged_ptr.get_ptr();
        n->~T();
        deallocate<ThreadSafe>(n);
    }

    template <bool ThreadSafe>
    void destruct (T * n)
    {
        n->~T();
        deallocate<ThreadSafe>(n);
    }

    ~freelist_stack(void)
    {
        tagged_node_ptr current = pool_.load();

        while (current) {
            freelist_node * current_ptr = current.get_ptr();
            if (current_ptr)
                current = current_ptr->next;
            Alloc::deallocate((T*)current_ptr, 1);
        }
    }

    bool is_lock_free(void) const
    {
        return pool_.is_lock_free();
    }

    T * get_handle(T * pointer) const
    {
        return pointer;
    }

    T * get_handle(tagged_node_handle const & handle) const
    {
        return get_pointer(handle);
    }

    T * get_pointer(tagged_node_handle const & tptr) const
    {
        return tptr.get_ptr();
    }

    T * get_pointer(T * pointer) const
    {
        return pointer;
    }

    T * null_handle(void) const
    {
        return NULL;
    }

protected: // allow use from subclasses
    template <bool ThreadSafe, bool Bounded>
    T * allocate (void)
    {
        if (ThreadSafe)
            return allocate_impl<Bounded>();
        else
            return allocate_impl_unsafe<Bounded>();
    }

private:
    template <bool Bounded>
    T * allocate_impl (void)
    {
        tagged_node_ptr old_pool = pool_.load(memory_order_consume);

        for(;;) {
            if (!old_pool.get_ptr()) {
                if (!Bounded)
                    return Alloc::allocate(1);
                else
                    return 0;
            }

            freelist_node * new_pool_ptr = old_pool->next.get_ptr();
            tagged_node_ptr new_pool (new_pool_ptr, old_pool.get_next_tag());

            if (pool_.compare_exchange_weak(old_pool, new_pool)) {
                void * ptr = old_pool.get_ptr();
                return reinterpret_cast<T*>(ptr);
            }
        }
    }

    template <bool Bounded>
    T * allocate_impl_unsafe (void)
    {
        tagged_node_ptr old_pool = pool_.load(memory_order_relaxed);

        if (!old_pool.get_ptr()) {
            if (!Bounded)
                return Alloc::allocate(1);
            else
                return 0;
        }

        freelist_node * new_pool_ptr = old_pool->next.get_ptr();
        tagged_node_ptr new_pool (new_pool_ptr, old_pool.get_next_tag());

        pool_.store(new_pool, memory_order_relaxed);
        void * ptr = old_pool.get_ptr();
        return reinterpret_cast<T*>(ptr);
    }

protected:
    template <bool ThreadSafe>
    void deallocate (T * n)
    {
        if (ThreadSafe)
            deallocate_impl(n);
        else
            deallocate_impl_unsafe(n);
    }

private:
    void deallocate_impl (T * n)
    {
        void * node = n;
        tagged_node_ptr old_pool = pool_.load(memory_order_consume);
        freelist_node * new_pool_ptr = reinterpret_cast<freelist_node*>(node);

        for(;;) {
            tagged_node_ptr new_pool (new_pool_ptr, old_pool.get_tag());
            new_pool->next.set_ptr(old_pool.get_ptr());

            if (pool_.compare_exchange_weak(old_pool, new_pool))
                return;
        }
    }

    void deallocate_impl_unsafe (T * n)
    {
        void * node = n;
        tagged_node_ptr old_pool = pool_.load(memory_order_relaxed);
        freelist_node * new_pool_ptr = reinterpret_cast<freelist_node*>(node);

        tagged_node_ptr new_pool (new_pool_ptr, old_pool.get_tag());
        new_pool->next.set_ptr(old_pool.get_ptr());

        pool_.store(new_pool, memory_order_relaxed);
    }

    atomic<tagged_node_ptr> pool_;
};

class alignas(4) tagged_index
{
public:
    typedef boost::uint16_t tag_t;
    typedef boost::uint16_t index_t;

    /** uninitialized constructor */
    tagged_index(void) BOOST_NOEXCEPT //: index(0), tag(0)
    {}

    /** copy constructor */
#ifdef BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
    tagged_index(tagged_index const & rhs):
        index(rhs.index), tag(rhs.tag)
    {}
#else
    tagged_index(tagged_index const & rhs) = default;
#endif

    explicit tagged_index(index_t i, tag_t t = 0):
        index(i), tag(t)
    {}

    /** index access */
    /* @{ */
    index_t get_index() const
    {
        return index;
    }

    void set_index(index_t i)
    {
        index = i;
    }
    /* @} */

    /** tag access */
    /* @{ */
    tag_t get_tag() const
    {
        return tag;
    }

    tag_t get_next_tag() const
    {
        tag_t next = (get_tag() + 1u) & (std::numeric_limits<tag_t>::max)();
        return next;
    }

    void set_tag(tag_t t)
    {
        tag = t;
    }
    /* @} */

    bool operator==(tagged_index const & rhs) const
    {
        return (index == rhs.index) && (tag == rhs.tag);
    }

    bool operator!=(tagged_index const & rhs) const
    {
        return !operator==(rhs);
    }

protected:
    index_t index;
    tag_t tag;
};

template <typename T,
          std::size_t size>
struct compiletime_sized_freelist_storage
{
    // array-based freelists only support a 16bit address space.
    BOOST_STATIC_ASSERT(size < 65536);

    boost::array<char, size * sizeof(T)> data;

    // unused ... only for API purposes
    template <typename Allocator>
    compiletime_sized_freelist_storage(Allocator const & /* alloc */, std::size_t /* count */)
    {}

    T * nodes(void) const
    {
        return reinterpret_cast<T*>(const_cast<char*>(data.data()));
    }

    std::size_t node_count(void) const
    {
        return size;
    }
};

template <typename T,
          typename Alloc = std::allocator<T> >
struct runtime_sized_freelist_storage:
    Alloc
{
    T * nodes_;
    std::size_t node_count_;

    template <typename Allocator>
    runtime_sized_freelist_storage(Allocator const & alloc, std::size_t count):
        Alloc(alloc), node_count_(count)
    {
        if (count > 65535)
            boost::throw_exception(std::runtime_error("boost.lockfree: freelist size is limited to a maximum of 65535 objects"));
        nodes_ = Alloc::allocate(count);
    }

    ~runtime_sized_freelist_storage(void)
    {
        Alloc::deallocate(nodes_, node_count_);
    }

    T * nodes(void) const
    {
        return nodes_;
    }

    std::size_t node_count(void) const
    {
        return node_count_;
    }
};


template <typename T,
          typename NodeStorage = runtime_sized_freelist_storage<T>
         >
class fixed_size_freelist:
    NodeStorage
{
    struct freelist_node
    {
        tagged_index next;
    };

    typedef tagged_index::index_t index_t;

    void initialize(void)
    {
        T * nodes = NodeStorage::nodes();
        for (std::size_t i = 0; i != NodeStorage::node_count(); ++i) {
            tagged_index * next_index = reinterpret_cast<tagged_index*>(nodes + i);
            next_index->set_index(null_handle());

#ifdef BOOST_LOCKFREE_FREELIST_INIT_RUNS_DTOR
            destruct<false>(nodes + i);
#else
            deallocate<false>(static_cast<index_t>(i));
#endif
        }
    }

public:
    typedef tagged_index tagged_node_handle;

    template <typename Allocator>
    fixed_size_freelist (Allocator const & alloc, std::size_t count):
        NodeStorage(alloc, count),
        pool_(tagged_index(static_cast<index_t>(count), 0))
    {
        initialize();
    }

    fixed_size_freelist (void):
        pool_(tagged_index(NodeStorage::node_count(), 0))
    {
        initialize();
    }

    template <bool ThreadSafe, bool Bounded>
    T * construct (void)
    {
        index_t node_index = allocate<ThreadSafe>();
        if (node_index == null_handle())
            return NULL;

        T * node = NodeStorage::nodes() + node_index;
        new(node) T();
        return node;
    }

    template <bool ThreadSafe, bool Bounded, typename ArgumentType>
    T * construct (ArgumentType const & arg)
    {
        index_t node_index = allocate<ThreadSafe>();
        if (node_index == null_handle())
            return NULL;

        T * node = NodeStorage::nodes() + node_index;
        new(node) T(arg);
        return node;
    }

    template <bool ThreadSafe, bool Bounded, typename ArgumentType1, typename ArgumentType2>
    T * construct (ArgumentType1 const & arg1, ArgumentType2 const & arg2)
    {
        index_t node_index = allocate<ThreadSafe>();
        if (node_index == null_handle())
            return NULL;

        T * node = NodeStorage::nodes() + node_index;
        new(node) T(arg1, arg2);
        return node;
    }

    template <bool ThreadSafe>
    void destruct (tagged_node_handle tagged_index)
    {
        index_t index = tagged_index.get_index();
        T * n = NodeStorage::nodes() + index;
        (void)n; // silence msvc warning
        n->~T();
        deallocate<ThreadSafe>(index);
    }

    template <bool ThreadSafe>
    void destruct (T * n)
    {
        n->~T();
        deallocate<ThreadSafe>(n - NodeStorage::nodes());
    }

    bool is_lock_free(void) const
    {
        return pool_.is_lock_free();
    }

    index_t null_handle(void) const
    {
        return static_cast<index_t>(NodeStorage::node_count());
    }

    index_t get_handle(T * pointer) const
    {
        if (pointer == NULL)
            return null_handle();
        else
            return static_cast<index_t>(pointer - NodeStorage::nodes());
    }

    index_t get_handle(tagged_node_handle const & handle) const
    {
        return handle.get_index();
    }

    T * get_pointer(tagged_node_handle const & tptr) const
    {
        return get_pointer(tptr.get_index());
    }

    T * get_pointer(index_t index) const
    {
        if (index == null_handle())
            return 0;
        else
            return NodeStorage::nodes() + index;
    }

    T * get_pointer(T * ptr) const
    {
        return ptr;
    }

protected: // allow use from subclasses
    template <bool ThreadSafe>
    index_t allocate (void)
    {
        if (ThreadSafe)
            return allocate_impl();
        else
            return allocate_impl_unsafe();
    }

private:
    index_t allocate_impl (void)
    {
        tagged_index old_pool = pool_.load(memory_order_consume);

        for(;;) {
            index_t index = old_pool.get_index();
            if (index == null_handle())
                return index;

            T * old_node = NodeStorage::nodes() + index;
            tagged_index * next_index = reinterpret_cast<tagged_index*>(old_node);

            tagged_index new_pool(next_index->get_index(), old_pool.get_next_tag());

            if (pool_.compare_exchange_weak(old_pool, new_pool))
                return old_pool.get_index();
        }
    }

    index_t allocate_impl_unsafe (void)
    {
        tagged_index old_pool = pool_.load(memory_order_consume);

        index_t index = old_pool.get_index();
        if (index == null_handle())
            return index;

        T * old_node = NodeStorage::nodes() + index;
        tagged_index * next_index = reinterpret_cast<tagged_index*>(old_node);

        tagged_index new_pool(next_index->get_index(), old_pool.get_next_tag());

        pool_.store(new_pool, memory_order_relaxed);
        return old_pool.get_index();
    }

    template <bool ThreadSafe>
    void deallocate (index_t index)
    {
        if (ThreadSafe)
            deallocate_impl(index);
        else
            deallocate_impl_unsafe(index);
    }

    void deallocate_impl (index_t index)
    {
        freelist_node * new_pool_node = reinterpret_cast<freelist_node*>(NodeStorage::nodes() + index);
        tagged_index old_pool = pool_.load(memory_order_consume);

        for(;;) {
            tagged_index new_pool (index, old_pool.get_tag());
            new_pool_node->next.set_index(old_pool.get_index());

            if (pool_.compare_exchange_weak(old_pool, new_pool))
                return;
        }
    }

    void deallocate_impl_unsafe (index_t index)
    {
        freelist_node * new_pool_node = reinterpret_cast<freelist_node*>(NodeStorage::nodes() + index);
        tagged_index old_pool = pool_.load(memory_order_consume);

        tagged_index new_pool (index, old_pool.get_tag());
        new_pool_node->next.set_index(old_pool.get_index());

        pool_.store(new_pool);
    }

    atomic<tagged_index> pool_;
};

template <typename T,
          typename Alloc,
          bool IsCompileTimeSized,
          bool IsFixedSize,
          std::size_t Capacity
          >
struct select_freelist
{
    typedef typename mpl::if_c<IsCompileTimeSized,
                               compiletime_sized_freelist_storage<T, Capacity>,
                               runtime_sized_freelist_storage<T, Alloc>
                              >::type fixed_sized_storage_type;

    typedef typename mpl::if_c<IsCompileTimeSized || IsFixedSize,
                               fixed_size_freelist<T, fixed_sized_storage_type>,
                               freelist_stack<T, Alloc>
                              >::type type;
};

template <typename T, bool IsNodeBased>
struct select_tagged_handle
{
    typedef typename mpl::if_c<IsNodeBased,
                               tagged_ptr<T>,
                               tagged_index
                              >::type tagged_handle_type;

    typedef typename mpl::if_c<IsNodeBased,
                               T*,
                               typename tagged_index::index_t
                              >::type handle_type;
};


} /* namespace detail */
} /* namespace lockfree */
} /* namespace boost */

#if defined(_MSC_VER)
#pragma warning(pop)
#endif


#endif /* BOOST_LOCKFREE_FREELIST_HPP_INCLUDED */

Commits for Divide-Dependencies/boost/boost/lockfree/detail/freelist.hpp

Diff revisions: vs.
Revision Author Commited Message
64 Diff Diff IonutCava picture IonutCava Thu 21 Apr, 2016 16:16:34 +0000

[IonutCava]
- Fix boost compilation issue with VS2015U2

58 Diff Diff IonutCava picture IonutCava Wed 17 Feb, 2016 17:24:37 +0000

[IonutCava]
- Updated boost to 1.6
- Updated SDL to 2.0.4
- Updated glbinding to 28/01/2016 version

23 Diff Diff k1ngp1n picture k1ngp1n Mon 31 Mar, 2014 22:16:39 +0000

[Ionut] [[BR]]
- Migrated to platform toolset v100 [[BR]]
- Updated boost to 1.55 [[BR]]
- DevIL is now dynamically linked [[BR]]
- Removed GameSWF [[BR]]

9 k1ngp1n picture k1ngp1n Fri 24 May, 2013 15:18:04 +0000

[Ionut] [[BR]]
- Updated boost to version 1.53 [[BR]]