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121 lines
3.0 KiB
121 lines
3.0 KiB
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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/*
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* This test verifies that the posix_memalign() function returns correctly aligned pointers.
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* It also verifies that the memory returned by posix_memalign() can be freed by Pin's free()
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* function.
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*/
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#include <iostream>
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#include <vector>
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#include <stdlib.h>
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#include <errno.h>
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#include "pin.H"
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extern "C" int posix_memalign(void **memptr, size_t alignment, size_t size);
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static BOOL TestAlign(size_t alignment, size_t size);
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typedef std::vector<void *> POINTER_CONTAINER;
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POINTER_CONTAINER Pointers;
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int main(int argc, char * argv[])
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{
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PIN_Init(argc, argv);
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// Test alignment of "small chunks"
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for (int i = 0; i < 10; i++)
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{
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for (size_t align = 1; align <= 8192; align <<= 1)
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{
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if (!TestAlign(align, 4))
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return 1;
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}
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}
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// Test alignment of "big chunks" that are larger than 1 page but smaller than 2 pages
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for (int i = 0; i < 10; i++)
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{
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for (size_t align = 1; align <= 8192; align <<= 1)
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{
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if (!TestAlign(align, 1700))
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return 1;
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}
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}
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// Test alignment of "big chunks" larger than one page in size and alignment larger than one page
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for (int i = 0; i < 10; i++)
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{
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for (size_t align = 1024; align < 16*1024; align <<= 1)
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{
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if (!TestAlign(align, (i+1)*100000))
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return 1;
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}
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}
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// Free the memory allocated by posix_memalign().
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for (POINTER_CONTAINER::iterator it = Pointers.begin(); it != Pointers.end(); ++it)
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free(*it);
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// Error testing
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std::cerr << "Error testing: expect an error message here." << std::endl;
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TestAlign( 555, 4096 );
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// Never returns
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PIN_StartProgram();
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return 0;
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}
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static BOOL TestAlign(size_t align, size_t size)
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{
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void *p = NULL;
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int err = posix_memalign(&p, align, size);
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if ( err == EINVAL )
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{
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std::cerr << "Invalid alignment value: " << align << std::endl;
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return FALSE;
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}
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if ( err == ENOMEM )
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{
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std::cerr << "Allocation failed due to insufficient memory." << std::endl;
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return FALSE;
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}
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ADDRINT addr = reinterpret_cast<ADDRINT>(p);
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if ( addr == 0x0 )
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{
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std::cerr << "Error: NULL value returned." << std::endl;
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return FALSE;
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}
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Pointers.push_back(p);
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if (addr & (align-1))
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{
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std::cerr << "Incorrect alignment for " << align << " (p=" << p << ")" << std::endl;
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return FALSE;
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}
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std::cout << "Alignment " << align << " : Size : " << size << " " << p << std::endl;
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return TRUE;
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}
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