| … | |
… | |
| 9 | |
9 | |
| 10 | #include <cstddef> |
10 | #include <cstddef> |
| 11 | |
11 | |
| 12 | #include <glib.h> |
12 | #include <glib.h> |
| 13 | |
13 | |
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14 | // use a gcc extension for auto declarations until ISO C++ sanctifies them |
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15 | #define AUTODECL(var,expr) typeof(expr) var = (expr) |
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16 | |
| 14 | // makes dynamically allocated objects zero-initialised |
17 | // makes dynamically allocated objects zero-initialised |
| 15 | struct zero_initialised |
18 | struct zero_initialised |
| 16 | { |
19 | { |
| 17 | void *operator new (size_t s, void *p) |
20 | void *operator new (size_t s, void *p) |
| 18 | { |
21 | { |
| … | |
… | |
| 39 | { |
42 | { |
| 40 | g_slice_free1 (s, p); |
43 | g_slice_free1 (s, p); |
| 41 | } |
44 | } |
| 42 | }; |
45 | }; |
| 43 | |
46 | |
| 44 | void throw_bad_alloc () throw (std::bad_alloc); |
47 | // strictly the same as g_slice_alloc, but never returns 0 |
| 45 | |
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| 46 | void *alloc (int s) throw (std::bad_alloc); |
48 | void *alloc (int s) throw (std::bad_alloc); |
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49 | // for symmetry |
| 47 | void dealloc (void *p, int s) throw (); |
50 | inline void dealloc (void *p, int s) throw () |
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51 | { |
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52 | g_slice_free1 (s, p); |
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53 | } |
| 48 | |
54 | |
| 49 | // a STL-compatible allocator that uses g_slice |
55 | // a STL-compatible allocator that uses g_slice |
| 50 | // boy, this is verbose |
56 | // boy, this is verbose |
| 51 | template<typename Tp> |
57 | template<typename Tp> |
| 52 | struct slice_allocator |
58 | struct slice_allocator |
| … | |
… | |
| 80 | return static_cast<pointer>(alloc (n * sizeof (Tp))); |
86 | return static_cast<pointer>(alloc (n * sizeof (Tp))); |
| 81 | } |
87 | } |
| 82 | |
88 | |
| 83 | void deallocate (pointer p, size_type n) |
89 | void deallocate (pointer p, size_type n) |
| 84 | { |
90 | { |
| 85 | dealloc (static_cast<void *>(p), n); |
91 | dealloc (static_cast<void *>(p), n * sizeof (Tp)); |
| 86 | } |
92 | } |
| 87 | |
93 | |
| 88 | size_type max_size ()const throw () |
94 | size_type max_size ()const throw () |
| 89 | { |
95 | { |
| 90 | return size_t (-1) / sizeof (Tp); |
96 | return size_t (-1) / sizeof (Tp); |
