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caf83a650e
* Allow use bundled *ssl library * fix * Add submodule * Fixes * fix * fixes * fixes * fix * fix * update poco * fix warnings * fix * fix * Build fixes * Build fixes * fix * fix * fix * fix * fix * fix * fix * add bat * no zookeeper in dbms * update boost * fixes * fixes * fix * fix * fix * fix * try fix * try fix * fix * fix * fix * fix * fix * fix * fix * fix * Better * fix * dh verbose * fix * dh verbose * fix * clean * Update LocalDate.h * Update LocalDateTime.h
49 lines
956 B
C++
49 lines
956 B
C++
#include <common/mremap.h>
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#include <cstddef>
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#include <cstdlib>
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#include <cstring>
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#include <errno.h>
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#if defined(MREMAP_FIXED)
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// we already have implementation (linux)
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#else
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void * mremap(
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void * old_address, size_t old_size, size_t new_size, int flags, int mmap_prot, int mmap_flags, int mmap_fd, off_t mmap_offset)
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{
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/// No actual shrink
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if (new_size < old_size)
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return old_address;
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if (!(flags & MREMAP_MAYMOVE))
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{
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errno = ENOMEM;
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return nullptr;
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}
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#if _MSC_VER
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void * new_address = ::operator new(new_size);
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#else
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void * new_address = mmap(nullptr, new_size, mmap_prot, mmap_flags, mmap_fd, mmap_offset);
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if (MAP_FAILED == new_address)
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{
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return MAP_FAILED;
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}
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#endif
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memcpy(new_address, old_address, old_size);
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#if _MSC_VER
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delete old_address;
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#else
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if (munmap(old_address, old_size))
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{
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abort();
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}
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#endif
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return new_address;
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}
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#endif
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