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git-svn-id: https://profuse.googlecode.com/svn/branches/v2@224 aa027e90-d47c-11dd-86d7-074df07e0730

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This commit is contained in:
ksherlock 2010-05-19 16:06:42 +00:00
parent 77fda944ae
commit e53674e015
3 changed files with 18 additions and 5 deletions
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12
File/File.cpp
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@ -36,6 +36,18 @@ File::File(const char *name, int flags)
throw POSIXException( __METHOD__ ": open", errno); throw POSIXException( __METHOD__ ": open", errno);
} }
File::File(const char *name, bool readOnly)
{
#undef __METHOD__
#define __METHOD__ "File::File"
_fd = ::open(name, readOnly ? O_RDONLY : O_RDWR);
if (_fd < 0)
throw POSIXException( __METHOD__ ": open", errno);
}
File::~File() File::~File()
{ {
close(); close();

1
File/File.h
View File

@ -13,6 +13,7 @@ class File {
File(File &); File(File &);
File(int fd); File(int fd);
File(const char *name, int flags); File(const char *name, int flags);
File(const char *name, bool readOnly);
~File(); ~File();
bool isValid() const bool isValid() const

10
File/MappedFile.cpp
View File

@ -45,7 +45,7 @@ MappedFile::MappedFile(const char *name, bool readOnly)
_address = MAP_FAILED; _address = MAP_FAILED;
_readOnly = readOnly; _readOnly = readOnly;
init(f, readOnly, -1); init(f, readOnly, 0);
} }
@ -64,13 +64,15 @@ void MappedFile::init(const File &f, bool readOnly, size_t size)
#define __METHOD__ "MappedFile::init" #define __METHOD__ "MappedFile::init"
struct stat st; struct stat st;
int prot = readOnly ? PROT_READ : PROT_READ | PROT_WRITE;
int flags = MAP_FILE | MAP_SHARED;
// close enough // close enough
if (f.fd() < 0) if (f.fd() < 0)
throw POSIXException( __METHOD__, EBADF); throw POSIXException( __METHOD__, EBADF);
if (size <= 0) if (!size)
{ {
if (::fstat(f.fd(), &st) != 0) if (::fstat(f.fd(), &st) != 0)
throw POSIXException(__METHOD__ ": fstat", errno); throw POSIXException(__METHOD__ ": fstat", errno);
@ -82,9 +84,7 @@ void MappedFile::init(const File &f, bool readOnly, size_t size)
} }
_length = size; _length = size;
_address = ::mmap(0, _length, _address = ::mmap(0, _length, prot, flags, f.fd(), 0);
readOnly ? PROT_READ : PROT_READ | PROT_WRITE,
MAP_FILE | MAP_SHARED, f.fd(), 0);
if (_address == MAP_FAILED) if (_address == MAP_FAILED)
throw POSIXException(__METHOD__ ": mmap", errno); throw POSIXException(__METHOD__ ": mmap", errno);