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zeniba-nsxiv/autoreload.h

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Add autoreload support by inotify (and dummy backend nop)
2017-01-26 22:18:32 +01:00
/* Copyright 2017 Max Voit
*
* This file is part of sxiv.
*
* sxiv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
*
* sxiv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with sxiv. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef AUTORELOAD_H
#define AUTORELOAD_H
#include "types.h"
typedef struct {
int fd;
Detect all file overwrites in autoreload_inotify mv(1) inside the same filesystem was not detected. Supporting this case made it necessary to always watch the directory. Turns out the logic and state keeping between arl_setup() and arl_handle() is easier, when using different watch descriptors for the file and the directory and not using a oneshot descriptor for the file. Requiring an absolute canonical path for arl_setup() simplifies dir and base name splitting. No need for dirname(3) and basename(3) anymore.
2017-05-17 20:16:16 +02:00
int wd_dir;
int wd_file;
char *filename;
Revised autoreload interface Make the header only contain the public interface and nothing from the implementation. All functions get a handle to their self object, like the img_ and tns_ and win_ functions. All necessary data (file path) is also passed as an argument, so that no extern redeclarations are needed. Make arl_setup_dir() private, it's not called outside the module. Make arl_handle() return true if the file has changed, so that the reloading of the file can be done by the caller.
2017-05-17 20:07:32 +02:00
} arl_t;
Add autoreload support by inotify (and dummy backend nop)
2017-01-26 22:18:32 +01:00
Revised autoreload interface Make the header only contain the public interface and nothing from the implementation. All functions get a handle to their self object, like the img_ and tns_ and win_ functions. All necessary data (file path) is also passed as an argument, so that no extern redeclarations are needed. Make arl_setup_dir() private, it's not called outside the module. Make arl_handle() return true if the file has changed, so that the reloading of the file can be done by the caller.
2017-05-17 20:07:32 +02:00
void arl_init(arl_t*);
Detect all file overwrites in autoreload_inotify mv(1) inside the same filesystem was not detected. Supporting this case made it necessary to always watch the directory. Turns out the logic and state keeping between arl_setup() and arl_handle() is easier, when using different watch descriptors for the file and the directory and not using a oneshot descriptor for the file. Requiring an absolute canonical path for arl_setup() simplifies dir and base name splitting. No need for dirname(3) and basename(3) anymore.
2017-05-17 20:16:16 +02:00
void arl_cleanup(arl_t*);
void arl_setup(arl_t*, const char* /* result of realpath(3) */);
bool arl_handle(arl_t*);
Add autoreload support by inotify (and dummy backend nop)
2017-01-26 22:18:32 +01:00
#endif /* AUTORELOAD_H */
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