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38 #include "cudautils.cuh"
39 #include "pmalloc_cuda.h"
41 /*! Allocates nbytes of page-locked memory.
42 * This memory should always be freed using pfree (or with the page-locked
43 * free functions provied by the CUDA library).
45 void pmalloc(void **h_ptr, size_t nbytes)
49 int flag = cudaHostAllocDefault;
59 stat = cudaMallocHost(h_ptr, nbytes, flag);
60 sprintf(strbuf, "cudaMallocHost of size %d bytes failed", (int)nbytes);
61 CU_RET_ERR(stat, strbuf);
64 /*! Allocates nbytes of page-locked memory with write-combining.
65 * This memory should always be freed using pfree (or with the page-locked
66 * free functions provied by the CUDA library).
68 void pmalloc_wc(void **h_ptr, size_t nbytes)
72 int flag = cudaHostAllocDefault || cudaHostAllocWriteCombined;
82 stat = cudaMallocHost(h_ptr, nbytes, flag);
83 sprintf(strbuf, "cudaMallocHost of size %d bytes failed", (int)nbytes);
84 CU_RET_ERR(stat, strbuf);
87 /*! Frees page locked memory allocated with pmalloc.
88 * This function can safely be called also with a pointer to a page-locked
89 * memory allocated directly with CUDA API calls.
91 void pfree(void *h_ptr)
102 stat = cudaFreeHost(h_ptr);
103 CU_RET_ERR(stat, "cudaFreeHost failed");