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Add the ability to perform standard IO operations on a file in a thread. 

SVN revision: 50618
This commit is contained in:
titan 2010-07-28 22:12:41 +00:00 committed by titan
parent 34bc016890
commit 0ae939099c
3 changed files with 197 additions and 0 deletions
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1
legacy/eio/AUTHORS
View File

@ -1 +1,2 @@
Cedric Bail <cedric.bail@free.fr>
Stephen Houston <UnixTitan@gmail.com>

16
legacy/eio/src/lib/Eio.h
View File

@ -2,6 +2,7 @@
* Copyright (C) 2010 Enlightenment Developers:
* Cedric Bail <cedric.bail@free.fr>
* Vincent "caro" Torri <vtorri at univ-evry dot fr>
* Stephen "okra" Houston <unixtitan@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -53,10 +54,19 @@
# endif
#endif /* ! _WIN32 */
#define EIO_FILE_MOD_TIME 1
#define EIO_FILE_SIZE 2
#define EIO_FILE_EXISTS 4
#define EIO_FILE_IS_DIR 8
#define EIO_FILE_CAN_READ 16
#define EIO_FILE_CAN_WRITE 32
#define EIO_FILE_CAN_EXECUTE 64
typedef struct _Eio_File Eio_File;
typedef Eina_Bool (*Eio_Filter_Cb)(const char *file, void *data);
typedef void (*Eio_Main_Cb)(const char *file, void *data);
typedef void (*Eio_File_Op_Main_Cb)(void *value, short int flag, void *data);
typedef Eina_Bool (*Eio_Filter_Direct_Cb)(const Eina_File_Direct_Info *info, void *data);
typedef void (*Eio_Main_Direct_Cb)(const Eina_File_Direct_Info *info, void *data);
@ -82,4 +92,10 @@ EAPI Eio_File *eio_file_direct_ls(const char *dir,
EAPI Eina_Bool eio_file_cancel(Eio_File *ls);
EAPI Eio_File *eio_file_operation(const char *file,
short int eio_file_flags,
Eio_File_Op_Main_Cb main_cb,
Eio_Done_Cb done_cb,
Eio_Done_Cb error_cb,
const void *data);
#endif

180
legacy/eio/src/lib/eio_file.c
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@ -2,6 +2,7 @@
* Copyright (C) 2010 Enlightenment Developers:
* Cedric Bail <cedric.bail@free.fr>
* Vincent "caro" Torri <vtorri at univ-evry dot fr>
* Stephen "okra" Houston <UnixTitan@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -24,11 +25,30 @@
#include <Ecore.h>
#include <stdio.h>
#include <string.h>
#ifndef _MSC_VER
# include <unistd.h>
# include <libgen.h>
#endif
#ifdef HAVE_FEATURES_H
# include <features.h>
#endif
#include <ctype.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include "Eio.h"
typedef struct _Eio_File_Ls Eio_File_Ls;
typedef struct _Eio_File_Direct_Ls Eio_File_Direct_Ls;
typedef struct _Eio_File_Char_Ls Eio_File_Char_Ls;
typedef struct _Eio_File_Op Eio_File_Op;
struct _Eio_File
{
@ -61,6 +81,19 @@ struct _Eio_File_Char_Ls
Eio_Main_Cb main_cb;
};
struct _Eio_File_Op
{
Eio_File common;
const char *file;
short int flags;
struct stat st;
int exists;
Eina_Bool can_read;
Eina_Bool can_write;
Eina_Bool can_execute;
Eio_File_Op_Main_Cb main_cb;
};
static int _eio_count = 0;
static void
@ -199,6 +232,109 @@ _eio_file_error(void *data)
free(async);
}
static void
_eio_file_op_cb(void *data)
{
Eio_File_Op *async;
async = data;
if (stat(async->file, &async->st) >= 0)
{
if (async->flags & EIO_FILE_CAN_READ == EIO_FILE_CAN_READ)
{
if (!access(async->file, R_OK))
async->can_read = EINA_TRUE;
else
async->can_read = EINA_FALSE;
}
if (async->flags & EIO_FILE_CAN_WRITE == EIO_FILE_CAN_WRITE)
{
if (!access(async->file, W_OK))
async->can_write = EINA_TRUE;
else
async->can_write = EINA_FALSE;
}
if (async->flags & EIO_FILE_CAN_EXECUTE == EIO_FILE_CAN_EXECUTE)
{
if (!access(async->file, X_OK))
async->can_execute = EINA_TRUE;
else
async->can_execute = EINA_FALSE;
}
async->exists = 1;
}
else
async->exists = 0;
}
static void
_eio_file_op_end(void *data)
{
Eio_File_Op *async;
async = data;
if (!async->exists)
{
if (async->flags & EIO_FILE_EXISTS == EIO_FILE_EXISTS)
async->main_cb((void *)EINA_FALSE, EIO_FILE_EXISTS, data);
ecore_thread_cancel(async->common.thread);
return;
}
if (async->flags & EIO_FILE_MOD_TIME == EIO_FILE_MOD_TIME)
async->main_cb((void *)async->st.st_mtime, EIO_FILE_MOD_TIME, data);
if (async->flags & EIO_FILE_SIZE == EIO_FILE_SIZE)
async->main_cb((void *)async->st.st_size, EIO_FILE_SIZE, data);
if (async->flags & EIO_FILE_EXISTS == EIO_FILE_EXISTS)
async->main_cb((void *)EINA_TRUE, EIO_FILE_EXISTS, data);
if (async->flags & EIO_FILE_IS_DIR == EIO_FILE_IS_DIR)
{
if (S_ISDIR(async->st.st_mode))
async->main_cb((void *)EINA_TRUE, EIO_FILE_IS_DIR, data);
else
async->main_cb((void *)EINA_FALSE, EIO_FILE_IS_DIR, data);
}
if (async->flags & EIO_FILE_CAN_READ == EIO_FILE_CAN_READ)
{
if (async->can_read)
async->main_cb((void *)EINA_TRUE, EIO_FILE_CAN_READ, data);
else
async->main_cb((void *)EINA_FALSE, EIO_FILE_CAN_READ, data);
}
if (async->flags & EIO_FILE_CAN_WRITE == EIO_FILE_CAN_WRITE)
{
if (async->can_write)
async->main_cb((void *)EINA_TRUE, EIO_FILE_CAN_WRITE, data);
else
async->main_cb((void *)EINA_FALSE, EIO_FILE_CAN_WRITE, data);
}
if (async->flags & EIO_FILE_CAN_EXECUTE == EIO_FILE_CAN_EXECUTE)
{
if (async->can_execute)
async->main_cb((void *)EINA_TRUE, EIO_FILE_CAN_EXECUTE, data);
else
async->main_cb((void *)EINA_FALSE, EIO_FILE_CAN_EXECUTE, data);
}
if (async->common.done_cb)
async->common.done_cb((void *) async->common.data);
free(async);
}
static void
_eio_file_op_error(void *data)
{
Eio_File_Op *async;
async = data;
if (async->common.error_cb)
async->common.error_cb((void *) async->common.data);
free(async);
}
EAPI int
eio_init(void)
{
@ -323,4 +459,48 @@ eio_file_cancel(Eio_File *ls)
return ecore_thread_cancel(ls->thread);
}
/**
* @brief Perform standard File IO operations.
* @param file The file to operate on.
* @param flags Bit flags to specify which operations to do.
* @param main_cb Callback called from the main loop with the results of the file operations.
* @param done_cb Callback called from the main loop when the operations are through.
* @param error_cb Callback called from the main loop when the file operations could not be completed.
* @return A reference to the IO operation.
*
* eio_file_operation runs selected operations in a separated thread using
* ecore_thread_run. This prevents any locking in your apps.
*/
EAPI Eio_File *
eio_file_operation(const char *file,
short int eio_file_flags,
Eio_File_Op_Main_Cb main_cb,
Eio_Done_Cb done_cb,
Eio_Done_Cb error_cb,
const void *data)
{
Eio_File_Op *async = NULL;
async = malloc(sizeof (Eio_File_Op));
if (!async) goto on_error;
async->main_cb = main_cb;
async->file = file;
async->flags = eio_file_flags;
async->common.done_cb = done_cb;
async->common.error_cb = error_cb;
async->common.data = data;
async->common.thread = ecore_thread_run(_eio_file_op_cb,
_eio_file_op_end,
_eio_file_op_error,
async);
if (!async->common.thread) goto on_error;
return &async->common;
on_error:
free(async);
return NULL;
}