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150 lines
3.2 KiB
C++
150 lines
3.2 KiB
C++
// This code is in the public domain -- Ignacio Castaño <castano@gmail.com>
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#include "Memory.h"
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#include "Debug.h"
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#include "Utils.h"
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#include <stdlib.h>
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#define USE_EFENCE 0
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#if USE_EFENCE
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extern "C" void *EF_malloc(size_t size);
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extern "C" void *EF_realloc(void * oldBuffer, size_t newSize);
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extern "C" void EF_free(void * address);
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#endif
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using namespace nv;
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#if NV_OVERRIDE_ALLOC
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void * malloc(size_t size)
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{
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#if USE_EFENCE
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return EF_malloc(size);
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#else
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return ::malloc(size);
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#endif
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}
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void * debug_malloc(size_t size, const char * file, int line)
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{
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NV_UNUSED(file);
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NV_UNUSED(line);
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#if USE_EFENCE
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return EF_malloc(size);
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#else
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return ::malloc(size);
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#endif
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}
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void free(void * ptr)
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{
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#if USE_EFENCE
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return EF_free(const_cast<void *>(ptr));
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#else
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::free(const_cast<void *>(ptr));
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#endif
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}
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void * realloc(void * ptr, size_t size)
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{
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nvDebugCheck(ptr != NULL || size != 0); // undefined realloc behavior.
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#if USE_EFENCE
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return EF_realloc(ptr, size);
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#else
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return ::realloc(ptr, size);
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#endif
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}
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/* No need to override this unless we want line info.
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void * operator new (size_t size) throw()
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{
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return malloc(size);
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}
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void operator delete (void *p) throw()
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{
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free(p);
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}
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void * operator new [] (size_t size) throw()
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{
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return malloc(size);
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}
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void operator delete [] (void * p) throw()
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{
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free(p);
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}
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*/
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#if 0 // Code from Apple:
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void* operator new(std::size_t sz) throw (std::bad_alloc)
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{
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void *result = std::malloc (sz == 0 ? 1 : sz);
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if (result == NULL)
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throw std::bad_alloc();
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gNewCounter++;
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return result;
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}
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void operator delete(void* p) throw()
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{
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if (p == NULL)
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return;
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std::free (p);
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gDeleteCounter++;
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}
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/* These are the 'nothrow' versions of the above operators.
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The system version will try to call a std::new_handler if they
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fail, but your overriding versions are not required to do this. */
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void* operator new(std::size_t sz, const std::nothrow_t&) throw()
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{
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try {
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void * result = ::operator new (sz); // calls our overridden operator new
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return result;
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} catch (std::bad_alloc &) {
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return NULL;
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}
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}
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void operator delete(void* p, const std::nothrow_t&) throw()
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{
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::operator delete (p);
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}
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#endif // 0
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#endif // NV_OVERRIDE_ALLOC
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void * nv::aligned_malloc(size_t size, size_t alignment)
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{
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// alignment must be a power of two, multiple of sizeof(void*)
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nvDebugCheck(isPowerOfTwo(alignment));
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nvDebugCheck((alignment & (sizeof(void*) - 1)) == 0);
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#if NV_OS_WIN32 || NV_OS_DURANGO
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return _aligned_malloc(size, alignment);
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#elif NV_OS_DARWIN && !NV_OS_IOS
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void * ptr = NULL;
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posix_memalign(&ptr, alignment, size);
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return ptr;
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#elif NV_OS_LINUX
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return memalign(alignment, size)
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#else // NV_OS_ORBIS || NV_OS_IOS
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// @@ IC: iOS appears to be 16 byte aligned, should we check alignment and assert if we request a higher alignment factor?
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return ::malloc(size);
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#endif
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}
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void nv::aligned_free(void * ptr)
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{
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#if NV_OS_WIN32 || NV_OS_DURANGO
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_aligned_free(ptr);
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#else
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::free(ptr);
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#endif
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}
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