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ProDOS/Posix Exceptions

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git-svn-id: https://profuse.googlecode.com/svn/branches/v2@124 aa027e90-d47c-11dd-86d7-074df07e0730
This commit is contained in:
ksherlock 2009-12-02 01:19:34 +00:00
parent b3334ac210
commit b660593d25
3 changed files with 58 additions and 22 deletions
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43
Exception.h
View File

@ -11,20 +11,36 @@ class Exception : public std::exception
public:
Exception(const char *cp);
Exception(const std::string &str);
Exception(const char *cp, int error);
Exception(const std::string& string, int error);
virtual ~Exception() throw ();
virtual const char *what();
int error() const;
int error() const { return _error; }
protected:
Exception(const char *cp, int error);
Exception(const std::string& string, int error);
private:
int _error;
std::string _string;
};
class POSIXException : public Exception {
public:
POSIXException(const char *cp, int error);
POSIXException(const std::string& string, int error);
};
class ProDOSException : public Exception {
public:
ProDOSException(const char *cp, int error);
ProDOSException(const std::string& string, int error);
};
inline Exception::Exception(const char *cp):
_error(0),
_string(cp)
@ -49,11 +65,28 @@ inline Exception::Exception(const std::string& string, int error):
{
}
inline int Exception::error() const
inline POSIXException::POSIXException(const char *cp, int error) :
Exception(cp, error)
{
return _error;
}
inline POSIXException::POSIXException(const std::string& string, int error) :
Exception(string, error)
{
}
inline ProDOSException::ProDOSException(const char *cp, int error) :
Exception(cp, error)
{
}
inline ProDOSException::ProDOSException(const std::string& string, int error) :
Exception(string, error)
{
}
}
#endif

14
MappedFile.cpp
View File

@ -36,7 +36,7 @@ MappedFile::MappedFile(const char *name, bool readOnly)
if (fd < 0)
{
throw Exception(__METHOD__ ": Unable to open file.", errno);
throw POSIXException(__METHOD__ ": Unable to open file.", errno);
}
// init may throw; auto_fd guarantees the file will be closed if that happens.
init(fd, readOnly);
@ -63,12 +63,12 @@ MappedFile::MappedFile(const char *name, size_t size)
auto_fd fd(::open(name, O_CREAT | O_TRUNC | O_RDWR, 0644));
if (fd < 0)
throw Exception(__METHOD__ ": Unable to create file.", errno);
throw POSIXException(__METHOD__ ": Unable to create file.", errno);
// TODO -- is ftruncate portable?
if (::ftruncate(fd, _size) < 0)
{
throw Exception(__METHOD__ ": Unable to truncate file.", errno);
throw POSIXException(__METHOD__ ": Unable to truncate file.", errno);
}
//_map = ::mmap(NULL, _size, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, _fd, 0);
@ -80,7 +80,7 @@ MappedFile::MappedFile(const char *name, size_t size)
MAP_FILE | MAP_SHARED
);
if (map == MAP_FAILED) throw Exception(__METHOD__ ": Unable to map file.", errno);
if (map == MAP_FAILED) throw POSIXException(__METHOD__ ": Unable to map file.", errno);
_fd = fd.release();
_map = map.release();
@ -110,7 +110,7 @@ void MappedFile::init(int f, bool readOnly)
_size = ::lseek(f, 0, SEEK_END);
if (_size < 0)
throw Exception(__METHOD__ ": Unable to determine file size.", errno);
throw POSIXException(__METHOD__ ": Unable to determine file size.", errno);
/*
_map = ::mmap(NULL, _size, readOnly ? PROT_READ : PROT_READ | PROT_WRITE,
@ -123,7 +123,7 @@ void MappedFile::init(int f, bool readOnly)
readOnly ? MAP_FILE : MAP_FILE | MAP_SHARED
);
if (map == MAP_FAILED) throw Exception(__METHOD__ ": Unable to map file.", errno);
if (map == MAP_FAILED) throw POSIXException(__METHOD__ ": Unable to map file.", errno);
_fd = f;
_map = map.release();
@ -227,7 +227,7 @@ void MappedFile::sync()
if (_readOnly) return;
if (::msync(_map, _size, MS_SYNC) < 0)
throw Exception(__METHOD__ ": msync error.", errno);
throw POSIXException(__METHOD__ ": msync error.", errno);
}
void MappedFile::reset()

23
RawDevice.cpp
View File

@ -36,7 +36,7 @@ void RawDevice::devSize(int fd)
struct dk_minfo minfo;
if (::ioctl(fd, DKIOCGMEDIAINFO, &minfo) < 0)
throw Exception(__METHOD__ ": Unable to determine device size.", errno);
throw POSIXException(__METHOD__ ": Unable to determine device size.", errno);
_size = minfo.dki_lbsize * minfo.dki_capacity;
_blockSize = 512; // not really, but whatever.
@ -55,11 +55,11 @@ void RawDevice::devSize(int fd)
uint64_t blockCount; // 64 bit
if (::ioctl(fd, DKIOCGETBLOCKSIZE, &blockSize) < 0)
throw Exception(__METHOD__ ": Unable to determine block size.", errno);
throw POSIXException(__METHOD__ ": Unable to determine block size.", errno);
if (::ioctl(fd, DKIOCGETBLOCKCOUNT, &blockCount) < 0)
throw Exception(__METHOD__ ": Unable to determine block count.", errno);
throw POSIXException(__METHOD__ ": Unable to determine block count.", errno);
_blockSize = blockSize;
_size = _blockSize * blockCount;
@ -79,7 +79,7 @@ void RawDevice::devSize(int fd)
int blocks;
if (::ioctl(fd, BLKGETSIZE, &blocks) < 0)
throw Exception(__METHOD__ ": Unable to determine device size.", errno);
throw POSIXException(__METHOD__ ": Unable to determine device size.", errno);
_size = 512 * blocks;
_blockSize = 512; //
@ -110,7 +110,7 @@ RawDevice::RawDevice(const char *name, bool readOnly)
}
if (fd < 0)
throw Exception(__METHOD__ ": Unable to open device.", errno);
throw POSIXException(__METHOD__ ": Unable to open device.", errno);
_fd = -1;
@ -147,8 +147,10 @@ void RawDevice::read(unsigned block, void *bp)
// TODO -- EINTR?
if (ok != 512)
throw Exception(__METHOD__ ": Error reading block.",
ok < 0 ? errno : 0);
throw ok < 0
? POSIXException(__METHOD__ ": Error reading block.", errno)
: Exception(__METHOD__ ": Error reading block.");
}
@ -166,8 +168,9 @@ void RawDevice::write(unsigned block, const void *bp)
size_t ok = ::pwrite(_fd, bp, 512, block * 512);
if (ok != 512)
throw Exception(__METHOD__ ": Error writing block.",
ok < 0 ? errno : 0);
throw ok < 0
? POSIXException(__METHOD__ ": Error writing block.", errno)
: Exception(__METHOD__ ": Error writing block.");
}
@ -184,5 +187,5 @@ void RawDevice::sync()
if (_readOnly) return;
if (::fsync(_fd) < 0)
throw Exception(__METHOD__ ": fsync error.", errno);
throw POSIXException(__METHOD__ ": fsync error.", errno);
}