STXXL
1.4.0
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Implementation of some file methods based on serving_request.
Definition at line 30 of file disk_queued_file.h.
Public Member Functions | |
disk_queued_file (int queue_id, int allocator_id) | |
request_ptr | aread (void *buffer, offset_type pos, size_type bytes, const completion_handler &on_cmpl) |
request_ptr | awrite (void *buffer, offset_type pos, size_type bytes, const completion_handler &on_cmpl) |
virtual int | get_allocator_id () const |
Returns the file's allocator. More... | |
virtual int | get_queue_id () const |
Returns the identifier of the file's queue. More... | |
Public Member Functions inherited from stxxl::file | |
virtual | ~file () |
void | add_request_ref () |
virtual request_ptr | aread (void *buffer, offset_type pos, size_type bytes, const completion_handler &on_cmpl)=0 |
Schedules an asynchronous read request to the file. More... | |
virtual request_ptr | awrite (void *buffer, offset_type pos, size_type bytes, const completion_handler &on_cmpl)=0 |
Schedules an asynchronous write request to the file. More... | |
virtual void | close_remove () |
close and remove file More... | |
void | delete_request_ref () |
virtual void | discard (offset_type offset, offset_type size) |
Discard a region of the file (mark it unused). Some specialized file types may need to know freed regions. More... | |
virtual void | export_files (offset_type offset, offset_type length, std::string prefix) |
virtual int | get_physical_device_id () const |
int | get_request_nref () |
virtual const char * | io_type () const |
Identifies the type of I/O implementation. More... | |
virtual void | lock ()=0 |
Locks file for reading and writing (acquires a lock in the file system). More... | |
virtual void | serve (const request *req)=0 throw (io_error) |
virtual void | set_size (offset_type newsize)=0 |
Changes the size of the file. More... | |
virtual offset_type | size ()=0 |
Returns size of the file. More... | |
Private Attributes | |
int | allocator_id |
int | queue_id |
Additional Inherited Members | |
Public Types inherited from stxxl::file | |
typedef request::offset_type | offset_type |
the offset of a request, also the size of the file More... | |
enum | open_mode { RDONLY = 1, WRONLY = 2, RDWR = 4, CREAT = 8, DIRECT = 16, TRUNC = 32, SYNC = 64, NO_LOCK = 128, REQUIRE_DIRECT = 256 } |
Definition of acceptable file open modes. More... | |
typedef request::size_type | size_type |
the size of a request More... | |
Static Public Member Functions inherited from stxxl::file | |
static int | unlink (const char *path) |
unlink path from filesystem More... | |
static int | truncate (const char *path, external_size_type length) |
truncate a path to given length. Use this only if you dont have a fileio-specific object, which provides truncate(). More... | |
Static Public Attributes inherited from stxxl::file | |
static const int | DEFAULT_QUEUE = -1 |
static const int | NO_ALLOCATOR = -1 |
static const int | NO_QUEUE = -2 |
Protected Member Functions inherited from stxxl::file | |
file () | |
Initializes file object. More... | |
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inline |
Definition at line 35 of file disk_queued_file.h.
request_ptr stxxl::disk_queued_file::aread | ( | void * | buffer, |
offset_type | pos, | ||
size_type | bytes, | ||
const completion_handler & | on_cmpl | ||
) |
Definition at line 26 of file disk_queued_file.cpp.
request_ptr stxxl::disk_queued_file::awrite | ( | void * | buffer, |
offset_type | pos, | ||
size_type | bytes, | ||
const completion_handler & | on_cmpl | ||
) |
Definition at line 40 of file disk_queued_file.cpp.
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inlinevirtual |
Returns the file's allocator.
Implements stxxl::file.
Definition at line 53 of file disk_queued_file.h.
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inlinevirtual |
Returns the identifier of the file's queue.
Implements stxxl::file.
Definition at line 48 of file disk_queued_file.h.
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private |
Definition at line 32 of file disk_queued_file.h.
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private |
Definition at line 32 of file disk_queued_file.h.