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Duplicate code
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#include <Grid/GridCore.h>
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#include <fcntl.h>
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NAMESPACE_BEGIN(Grid);
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MemoryStats *MemoryProfiler::stats = nullptr;
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bool MemoryProfiler::debug = false;
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void check_huge_pages(void *Buf,uint64_t BYTES)
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{
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#ifdef __linux__
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int fd = open("/proc/self/pagemap", O_RDONLY);
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assert(fd >= 0);
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const int page_size = 4096;
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uint64_t virt_pfn = (uint64_t)Buf / page_size;
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off_t offset = sizeof(uint64_t) * virt_pfn;
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uint64_t npages = (BYTES + page_size-1) / page_size;
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uint64_t pagedata[npages];
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uint64_t ret = lseek(fd, offset, SEEK_SET);
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assert(ret == offset);
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ret = ::read(fd, pagedata, sizeof(uint64_t)*npages);
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assert(ret == sizeof(uint64_t) * npages);
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int nhugepages = npages / 512;
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int n4ktotal, nnothuge;
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n4ktotal = 0;
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nnothuge = 0;
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for (int i = 0; i < nhugepages; ++i) {
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uint64_t baseaddr = (pagedata[i*512] & 0x7fffffffffffffULL) * page_size;
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for (int j = 0; j < 512; ++j) {
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uint64_t pageaddr = (pagedata[i*512+j] & 0x7fffffffffffffULL) * page_size;
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++n4ktotal;
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if (pageaddr != baseaddr + j * page_size)
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++nnothuge;
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}
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}
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int rank = CartesianCommunicator::RankWorld();
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printf("rank %d Allocated %d 4k pages, %d not in huge pages\n", rank, n4ktotal, nnothuge);
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#endif
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}
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std::string sizeString(const size_t bytes)
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{
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constexpr unsigned int bufSize = 256;
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const char *suffixes[7] = {"", "K", "M", "G", "T", "P", "E"};
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char buf[256];
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size_t s = 0;
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double count = bytes;
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while (count >= 1024 && s < 7)
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{
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s++;
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count /= 1024;
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}
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if (count - floor(count) == 0.0)
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{
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snprintf(buf, bufSize, "%d %sB", (int)count, suffixes[s]);
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}
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else
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{
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snprintf(buf, bufSize, "%.1f %sB", count, suffixes[s]);
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}
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return std::string(buf);
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}
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NAMESPACE_END(Grid);
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