forked from cerc-io/plugeth
289b30715d
This commit converts the dependency management from Godeps to the vendor folder, also switching the tool from godep to trash. Since the upstream tool lacks a few features proposed via a few PRs, until those PRs are merged in (if), use github.com/karalabe/trash. You can update dependencies via trash --update. All dependencies have been updated to their latest version. Parts of the build system are reworked to drop old notions of Godeps and invocation of the go vet command so that it doesn't run against the vendor folder, as that will just blow up during vetting. The conversion drops OpenCL (and hence GPU mining support) from ethash and our codebase. The short reasoning is that there's noone to maintain and having opencl libs in our deps messes up builds as go install ./... tries to build them, failing with unsatisfied link errors for the C OpenCL deps. golang.org/x/net/context is not vendored in. We expect it to be fetched by the user (i.e. using go get). To keep ci.go builds reproducible the package is "vendored" in build/_vendor.
85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
/* mmap() replacement for Windows
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*
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* Author: Mike Frysinger <vapier@gentoo.org>
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* Placed into the public domain
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*/
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/* References:
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* CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
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* CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
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* MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
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* UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
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*/
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#include <io.h>
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#include <windows.h>
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#include "mmap.h"
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#ifdef __USE_FILE_OFFSET64
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# define DWORD_HI(x) (x >> 32)
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# define DWORD_LO(x) ((x) & 0xffffffff)
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#else
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# define DWORD_HI(x) (0)
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# define DWORD_LO(x) (x)
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#endif
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void* mmap(void* start, size_t length, int prot, int flags, int fd, off_t offset)
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{
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if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
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return MAP_FAILED;
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if (fd == -1) {
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if (!(flags & MAP_ANON) || offset)
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return MAP_FAILED;
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} else if (flags & MAP_ANON)
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return MAP_FAILED;
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DWORD flProtect;
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if (prot & PROT_WRITE) {
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if (prot & PROT_EXEC)
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flProtect = PAGE_EXECUTE_READWRITE;
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else
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flProtect = PAGE_READWRITE;
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} else if (prot & PROT_EXEC) {
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if (prot & PROT_READ)
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flProtect = PAGE_EXECUTE_READ;
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else if (prot & PROT_EXEC)
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flProtect = PAGE_EXECUTE;
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} else
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flProtect = PAGE_READONLY;
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off_t end = length + offset;
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HANDLE mmap_fd, h;
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if (fd == -1)
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mmap_fd = INVALID_HANDLE_VALUE;
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else
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mmap_fd = (HANDLE)_get_osfhandle(fd);
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h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
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if (h == NULL)
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return MAP_FAILED;
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DWORD dwDesiredAccess;
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if (prot & PROT_WRITE)
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dwDesiredAccess = FILE_MAP_WRITE;
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else
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dwDesiredAccess = FILE_MAP_READ;
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if (prot & PROT_EXEC)
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dwDesiredAccess |= FILE_MAP_EXECUTE;
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if (flags & MAP_PRIVATE)
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dwDesiredAccess |= FILE_MAP_COPY;
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void *ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
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if (ret == NULL) {
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ret = MAP_FAILED;
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}
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// since we are handling the file ourselves with fd, close the Windows Handle here
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CloseHandle(h);
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return ret;
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}
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void munmap(void* addr, size_t length)
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{
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UnmapViewOfFile(addr);
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}
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#undef DWORD_HI
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#undef DWORD_LO
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