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mman-win32: remove

Browse Source 
Summary: This is unused, remove it.

Reviewed By: DurhamG

Differential Revision: D24062631

fbshipit-source-id: 2c0b758866881986d3454ddb2941cd04d44861f3
This commit is contained in:
Xavier Deguillard 2020-10-02 10:43:21 -07:00 committed by Facebook GitHub Bot
parent 0967eafcba
commit 24f28191f3
5 changed files with 0 additions and 494 deletions
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10
eden/scm/lib/third-party/mman-win32/README.md vendored
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mman-win32
==========
mman library for Windows. mirror of https://code.google.com/p/mman-win32/
A light implementation of the mmap functions for MinGW.
The mmap-win32 library implements a wrapper for mmap functions around the memory mapping Windows API.
License: MIT License

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eden/scm/lib/third-party/mman-win32/UpgradeLog.htm vendored
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180
eden/scm/lib/third-party/mman-win32/mman.c vendored
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#include <windows.h>
#include <errno.h>
#include <io.h>
#include "mman.h"
#ifndef FILE_MAP_EXECUTE
#define FILE_MAP_EXECUTE 0x0020
#endif /* FILE_MAP_EXECUTE */
static int __map_mman_error(const DWORD err, const int deferr)
{
if (err == 0)
return 0;
//TODO: implement
return err;
}
static DWORD __map_mmap_prot_page(const int prot)
{
DWORD protect = 0;
if (prot == PROT_NONE)
return protect;
if ((prot & PROT_EXEC) != 0)
{
protect = ((prot & PROT_WRITE) != 0) ?
PAGE_EXECUTE_READWRITE : PAGE_EXECUTE_READ;
}
else
{
protect = ((prot & PROT_WRITE) != 0) ?
PAGE_READWRITE : PAGE_READONLY;
}
return protect;
}
static DWORD __map_mmap_prot_file(const int prot)
{
DWORD desiredAccess = 0;
if (prot == PROT_NONE)
return desiredAccess;
if ((prot & PROT_READ) != 0)
desiredAccess |= FILE_MAP_READ;
if ((prot & PROT_WRITE) != 0)
desiredAccess |= FILE_MAP_WRITE;
if ((prot & PROT_EXEC) != 0)
desiredAccess |= FILE_MAP_EXECUTE;
return desiredAccess;
}
void* mmap(void *addr, size_t len, int prot, int flags, int fildes, OffsetType off)
{
HANDLE fm, h;
void * map = MAP_FAILED;
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4293)
#endif
const DWORD dwFileOffsetLow = (sizeof(OffsetType) <= sizeof(DWORD)) ?
(DWORD)off : (DWORD)(off & 0xFFFFFFFFL);
const DWORD dwFileOffsetHigh = (sizeof(OffsetType) <= sizeof(DWORD)) ?
(DWORD)0 : (DWORD)((off >> 32) & 0xFFFFFFFFL);
const DWORD protect = __map_mmap_prot_page(prot);
const DWORD desiredAccess = __map_mmap_prot_file(prot);
const OffsetType maxSize = off + (OffsetType)len;
const DWORD dwMaxSizeLow = (sizeof(OffsetType) <= sizeof(DWORD)) ?
(DWORD)maxSize : (DWORD)(maxSize & 0xFFFFFFFFL);
const DWORD dwMaxSizeHigh = (sizeof(OffsetType) <= sizeof(DWORD)) ?
(DWORD)0 : (DWORD)((maxSize >> 32) & 0xFFFFFFFFL);
#ifdef _MSC_VER
#pragma warning(pop)
#endif
errno = 0;
if (len == 0
/* Unsupported flag combinations */
|| (flags & MAP_FIXED) != 0
/* Usupported protection combinations */
|| prot == PROT_EXEC)
{
errno = EINVAL;
return MAP_FAILED;
}
h = ((flags & MAP_ANONYMOUS) == 0) ?
(HANDLE)_get_osfhandle(fildes) : INVALID_HANDLE_VALUE;
if ((flags & MAP_ANONYMOUS) == 0 && h == INVALID_HANDLE_VALUE)
{
errno = EBADF;
return MAP_FAILED;
}
fm = CreateFileMapping(h, NULL, protect, dwMaxSizeHigh, dwMaxSizeLow, NULL);
if (fm == NULL)
{
errno = __map_mman_error(GetLastError(), EPERM);
return MAP_FAILED;
}
map = MapViewOfFile(fm, desiredAccess, dwFileOffsetHigh, dwFileOffsetLow, len);
CloseHandle(fm);
if (map == NULL)
{
errno = __map_mman_error(GetLastError(), EPERM);
return MAP_FAILED;
}
return map;
}
int munmap(void *addr, size_t len)
{
if (UnmapViewOfFile(addr))
return 0;
errno = __map_mman_error(GetLastError(), EPERM);
return -1;
}
int _mprotect(void *addr, size_t len, int prot)
{
DWORD newProtect = __map_mmap_prot_page(prot);
DWORD oldProtect = 0;
if (VirtualProtect(addr, len, newProtect, &oldProtect))
return 0;
errno = __map_mman_error(GetLastError(), EPERM);
return -1;
}
int msync(void *addr, size_t len, int flags)
{
if (FlushViewOfFile(addr, len))
return 0;
errno = __map_mman_error(GetLastError(), EPERM);
return -1;
}
int mlock(const void *addr, size_t len)
{
if (VirtualLock((LPVOID)addr, len))
return 0;
errno = __map_mman_error(GetLastError(), EPERM);
return -1;
}
int munlock(const void *addr, size_t len)
{
if (VirtualUnlock((LPVOID)addr, len))
return 0;
errno = __map_mman_error(GetLastError(), EPERM);
return -1;
}

69
eden/scm/lib/third-party/mman-win32/mman.h vendored
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/*
* sys/mman.h
* mman-win32
*/
#ifndef _SYS_MMAN_H_
#define _SYS_MMAN_H_
#ifndef _WIN32_WINNT // Allow use of features specific to Windows XP or later.
#define _WIN32_WINNT 0x0501 // Change this to the appropriate value to target other versions of Windows.
#endif
/* All the headers include this file. */
#ifndef _MSC_VER
#include <_mingw.h>
#endif
#if defined(MMAN_LIBRARY)
#define MMANSHARED_EXPORT __declspec(dllexport)
#else
#define MMANSHARED_EXPORT __declspec(dllimport)
#endif
/* Determine offset type */
#include <stdint.h>
#if defined(_WIN64)
typedef int64_t OffsetType;
#else
typedef uint32_t OffsetType;
#endif
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
#define PROT_NONE 0
#define PROT_READ 1
#define PROT_WRITE 2
#define PROT_EXEC 4
#define MAP_FILE 0
#define MAP_SHARED 1
#define MAP_PRIVATE 2
#define MAP_TYPE 0xf
#define MAP_FIXED 0x10
#define MAP_ANONYMOUS 0x20
#define MAP_ANON MAP_ANONYMOUS
#define MAP_FAILED ((void *)-1)
/* Flags for msync. */
#define MS_ASYNC 1
#define MS_SYNC 2
#define MS_INVALIDATE 4
MMANSHARED_EXPORT void* mmap(void *addr, size_t len, int prot, int flags, int fildes, OffsetType off);
MMANSHARED_EXPORT int munmap(void *addr, size_t len);
MMANSHARED_EXPORT int _mprotect(void *addr, size_t len, int prot);
MMANSHARED_EXPORT int msync(void *addr, size_t len, int flags);
MMANSHARED_EXPORT int mlock(const void *addr, size_t len);
MMANSHARED_EXPORT int munlock(const void *addr, size_t len);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MMAN_H_ */

235
eden/scm/lib/third-party/mman-win32/test.c vendored
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#include "mman.h"
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#ifndef NULL
#define NULL (void*)0
#endif
const char* map_file_name = "map_file.dat";
int test_anon_map_readwrite()
{
void* map = mmap(NULL, 1024, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (map == MAP_FAILED)
{
printf("mmap (MAP_ANONYMOUS, PROT_READ | PROT_WRITE) returned unexpected error: %d\n", errno);
return -1;
}
*((unsigned char*)map) = 1;
int result = munmap(map, 1024);
if (result != 0)
printf("munmap (MAP_ANONYMOUS, PROT_READ | PROT_WRITE) returned unexpected error: %d\n", errno);
return result;
}
int test_anon_map_readonly()
{
void* map = mmap(NULL, 1024, PROT_READ,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (map == MAP_FAILED)
{
printf("mmap (MAP_ANONYMOUS, PROT_READ) returned unexpected error: %d\n", errno);
return -1;
}
*((unsigned char*)map) = 1;
int result = munmap(map, 1024);
if (result != 0)
printf("munmap (MAP_ANONYMOUS, PROT_READ) returned unexpected error: %d\n", errno);
return result;
}
int test_anon_map_writeonly()
{
void* map = mmap(NULL, 1024, PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (map == MAP_FAILED)
{
printf("mmap (MAP_ANONYMOUS, PROT_WRITE) returned unexpected error: %d\n", errno);
return -1;
}
*((unsigned char*)map) = 1;
int result = munmap(map, 1024);
if (result != 0)
printf("munmap (MAP_ANONYMOUS, PROT_WRITE) returned unexpected error: %d\n", errno);
return result;
}
int test_anon_map_readonly_nowrite()
{
void* map = mmap(NULL, 1024, PROT_READ,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (map == MAP_FAILED)
{
printf("mmap (MAP_ANONYMOUS, PROT_READ) returned unexpected error: %d\n", errno);
return -1;
}
if (*((unsigned char*)map) != 0)
printf("test_anon_map_readonly_nowrite (MAP_ANONYMOUS, PROT_READ) returned unexpected value: %d\n",
(int)*((unsigned char*)map));
int result = munmap(map, 1024);
if (result != 0)
printf("munmap (MAP_ANONYMOUS, PROT_READ) returned unexpected error: %d\n", errno);
return result;
}
int test_file_map_readwrite()
{
mode_t mode = S_IRUSR | S_IWUSR;
int o = open(map_file_name, O_TRUNC | O_BINARY | O_RDWR | O_CREAT, mode);
void* map = mmap(NULL, 1024, PROT_READ | PROT_WRITE, MAP_PRIVATE, o, 0);
if (map == MAP_FAILED)
{
printf("mmap returned unexpected error: %d\n", errno);
return -1;
}
*((unsigned char*)map) = 1;
int result = munmap(map, 1024);
if (result != 0)
printf("munmap returned unexpected error: %d\n", errno);
close(o);
/*TODO: get file info and content and compare it with the sources conditions */
unlink(map_file_name);
return result;
}
int test_file_map_mlock_munlock()
{
const size_t map_size = 1024;
int result = 0;
mode_t mode = S_IRUSR | S_IWUSR;
int o = open(map_file_name, O_TRUNC | O_BINARY | O_RDWR | O_CREAT, mode);
if (o == -1)
{
printf("unable to create file %s: %d\n", map_file_name, errno);
return -1;
}
void* map = mmap(NULL, map_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, o, 0);
if (map == MAP_FAILED)
{
printf("mmap returned unexpected error: %d\n", errno);
result = -1;
goto done_close;
}
if (mlock(map, map_size) != 0)
{
printf("mlock returned unexpected error: %d\n", errno);
result = -1;
goto done_munmap;
}
*((unsigned char*)map) = 1;
if (munlock(map, map_size) != 0)
{
printf("munlock returned unexpected error: %d\n", errno);
result = -1;
}
done_munmap:
result = munmap(map, map_size);
if (result != 0)
printf("munmap returned unexpected error: %d\n", errno);
done_close:
close(o);
unlink(map_file_name);
done:
return result;
}
int test_file_map_msync()
{
const size_t map_size = 1024;
int result = 0;
mode_t mode = S_IRUSR | S_IWUSR;
int o = open(map_file_name, O_TRUNC | O_BINARY | O_RDWR | O_CREAT, mode);
if (o == -1)
{
printf("unable to create file %s: %d\n", map_file_name, errno);
return -1;
}
void* map = mmap(NULL, map_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, o, 0);
if (map == MAP_FAILED)
{
printf("mmap returned unexpected error: %d\n", errno);
result = -1;
goto done_close;
}
*((unsigned char*)map) = 1;
if (msync(map, map_size, MS_SYNC) != 0)
{
printf("msync returned unexpected error: %d\n", errno);
result = -1;
}
result = munmap(map, map_size);
if (result != 0)
printf("munmap returned unexpected error: %d\n", errno);
done_close:
close(o);
unlink(map_file_name);
done:
return result;
}
#define EXEC_TEST(name) \
if (name() != 0) { result = -1; printf( #name ": fail\n"); } \
else { printf(#name ": pass\n"); }
int main()
{
int result = 0;
EXEC_TEST(test_anon_map_readwrite);
//NOTE: this test must cause an access violation exception
//EXEC_TEST(test_anon_map_readonly);
EXEC_TEST(test_anon_map_readonly_nowrite);
EXEC_TEST(test_anon_map_writeonly);
EXEC_TEST(test_file_map_readwrite);
EXEC_TEST(test_file_map_mlock_munlock);
EXEC_TEST(test_file_map_msync);
//TODO: EXEC_TEST(test_file_map_mprotect);
return result;
}