40 lines
1013 B
C++
40 lines
1013 B
C++
#ifndef BOXED_REGION_H
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#define BOXED_REGION_H
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#include <stdlib.h>
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struct type_desc;
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class memory_region;
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struct rust_opaque_box;
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/* Tracks the data allocated by a particular task in the '@' region.
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* Currently still relies on the standard malloc as a backing allocator, but
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* this could be improved someday if necessary. Every allocation must provide
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* a type descr which describes the payload (what follows the header). */
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class boxed_region {
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private:
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memory_region *backing_region;
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rust_opaque_box *live_allocs;
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size_t align_to(size_t v, size_t align) {
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size_t alignm1 = align - 1;
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v += alignm1;
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v &= ~alignm1;
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return v;
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}
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public:
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boxed_region(memory_region *br)
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: backing_region(br)
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, live_allocs(NULL)
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{}
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rust_opaque_box *first_live_alloc() { return live_allocs; }
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rust_opaque_box *malloc(type_desc *td);
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rust_opaque_box *calloc(type_desc *td);
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void free(rust_opaque_box *box);
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};
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#endif /* BOXED_REGION_H */
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