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Make MappedFile not throw any exceptions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29816 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2006-08-22 16:04:22 +00:00
parent ad42ea7356
commit 6d045fcdcd
2 changed files with 39 additions and 17 deletions
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31
include/llvm/System/MappedFile.h
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@@ -48,8 +48,7 @@ namespace sys {
/// Construct a MappedFile to the \p path in the operating system's file
/// system with the mapping \p options provided.
/// @throws std::string if an error occurs
MappedFile(const Path& path, int options = READ_ACCESS)
: path_(path), options_(options), base_(0), info_(0) { initialize(); }
MappedFile() : path_(), options_(READ_ACCESS), base_(0), info_(0) {}
/// Destruct a MappedFile and release all memory associated with it.
/// @throws std::string if an error occurs
@@ -101,6 +100,18 @@ namespace sys {
/// @name Mutators
/// @{
public:
/// Open a file to be mapped and get its size but don't map it yet.
/// @returns true if an error occurred
bool open(
const sys::Path& p, ///< Path to file to be mapped
int options = READ_ACCESS, ///< Access mode for the mapping
std::string* ErrMsg = 0 ///< Optional error string pointer
) {
path_ = p;
options_ = options;
return initialize(ErrMsg);
}
/// The mapped file is removed from memory. If the file was mapped for
/// write access, the memory contents will be automatically synchronized
/// with the file's disk contents.
@@ -108,9 +119,12 @@ namespace sys {
void unmap();
/// The mapped file is put into memory.
/// @returns The base memory address of the mapped file.
/// @returns The base memory address of the mapped file or 0 if an error
/// occurred.
/// @brief Map the file into memory.
void* map();
void* map(
std::string* ErrMsg ///< Optional error string pointer
);
/// This method causes the size of the file, and consequently the size
/// of the mapping to be set. This is logically the same as unmap(),
@@ -122,14 +136,17 @@ namespace sys {
/// @brief Set the size of the file and memory mapping.
void size(size_t new_size);
void close() { terminate(); }
void close() { if (info_) terminate(); }
/// @}
/// @name Implementation
/// @{
private:
void initialize(); ///< Initialize platform-specific portion
void terminate(); ///< Terminate platform-specific portion
/// @brief Initialize platform-specific portion
bool initialize(std::string* ErrMsg);
/// @brief Terminate platform-specific portion
void terminate();
/// @}
/// @name Data