111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
/*
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* This file Copyright (C) 2015-2016 Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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*/
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#include <errno.h>
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#include <event2/event.h>
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#define LIBTRANSMISSION_WATCHDIR_MODULE
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#include "transmission.h"
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#include "log.h"
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#include "ptrarray.h"
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#include "tr-assert.h"
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#include "utils.h"
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#include "watchdir.h"
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#include "watchdir-common.h"
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/***
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****
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***/
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#define log_error(...) (!tr_logLevelIsActive(TR_LOG_ERROR) ? (void)0 : \
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tr_logAddMessage(__FILE__, __LINE__, TR_LOG_ERROR, "watchdir:generic", __VA_ARGS__))
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/***
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****
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***/
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typedef struct tr_watchdir_generic
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{
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tr_watchdir_backend base;
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struct event* event;
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tr_ptrArray dir_entries;
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}
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tr_watchdir_generic;
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#define BACKEND_UPCAST(b) ((tr_watchdir_generic*)(b))
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/* Non-static and mutable for unit tests */
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struct timeval tr_watchdir_generic_interval = { .tv_sec = 10, .tv_usec = 0 };
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/***
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****
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***/
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static void tr_watchdir_generic_on_event(evutil_socket_t fd UNUSED, short type UNUSED, void* context)
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{
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tr_watchdir_t const handle = context;
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tr_watchdir_generic* const backend = BACKEND_UPCAST(tr_watchdir_get_backend(handle));
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tr_watchdir_scan(handle, &backend->dir_entries);
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}
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static void tr_watchdir_generic_free(tr_watchdir_backend* backend_base)
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{
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tr_watchdir_generic* const backend = BACKEND_UPCAST(backend_base);
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if (backend == NULL)
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{
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return;
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}
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TR_ASSERT(backend->base.free_func == &tr_watchdir_generic_free);
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if (backend->event != NULL)
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{
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event_del(backend->event);
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event_free(backend->event);
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}
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tr_ptrArrayDestruct(&backend->dir_entries, &tr_free);
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tr_free(backend);
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}
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tr_watchdir_backend* tr_watchdir_generic_new(tr_watchdir_t handle)
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{
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tr_watchdir_generic* backend;
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backend = tr_new0(tr_watchdir_generic, 1);
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backend->base.free_func = &tr_watchdir_generic_free;
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if ((backend->event = event_new(tr_watchdir_get_event_base(handle), -1, EV_PERSIST, &tr_watchdir_generic_on_event,
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handle)) == NULL)
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{
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log_error("Failed to create event: %s", tr_strerror(errno));
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goto fail;
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}
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if (event_add(backend->event, &tr_watchdir_generic_interval) == -1)
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{
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log_error("Failed to add event: %s", tr_strerror(errno));
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goto fail;
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}
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/* Run initial scan on startup */
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event_active(backend->event, EV_READ, 0);
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return BACKEND_DOWNCAST(backend);
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fail:
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tr_watchdir_generic_free(BACKEND_DOWNCAST(backend));
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return NULL;
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}
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