mirror of
https://github.com/varun-r-mallya/sysprof.git
synced 2025-12-31 20:36:25 +00:00
dbb7833cbf
This brings together the two libraries back into one now that the whole design is pretty well sorted out. They depend on roughly the same libraries anyway and it's way easier of the single library can both read and write the capture files (along with bringing in libsysprof-capture symbols in a single place).
108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/* sysprof-journald-source.c
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*
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* Copyright 2023 Christian Hergert <chergert@redhat.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#include "config.h"
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#include <systemd/sd-journal.h>
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#include "sysprof-journald-source.h"
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typedef struct _SysprofJournaldSource
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{
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GSource parent_instance;
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sd_journal *journal;
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SysprofJournaldSourceFunc func;
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gpointer func_data;
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GDestroyNotify func_data_destroy;
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} SysprofJournaldSource;
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static void
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sysprof_journald_source_finalize (GSource *source)
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{
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SysprofJournaldSource *self = (SysprofJournaldSource *)source;
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if (self->func_data_destroy)
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self->func_data_destroy (self->func_data);
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g_clear_pointer (&self->journal, sd_journal_close);
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}
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static gboolean
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sysprof_journald_source_dispatch (GSource *source,
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GSourceFunc callback,
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gpointer user_data)
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{
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SysprofJournaldSource *self = (SysprofJournaldSource *)source;
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if (sd_journal_process (self->journal) == SD_JOURNAL_APPEND)
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{
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if (sd_journal_next (self->journal) > 0)
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return self->func (self->func_data, self->journal);
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}
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return G_SOURCE_CONTINUE;
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}
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static GSourceFuncs sysprof_journald_source_funcs = {
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.dispatch = sysprof_journald_source_dispatch,
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.finalize = sysprof_journald_source_finalize,
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};
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GSource *
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sysprof_journald_source_new (SysprofJournaldSourceFunc func,
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gpointer func_data,
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GDestroyNotify func_data_destroy)
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{
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SysprofJournaldSource *self;
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sd_journal *journal = NULL;
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int fd;
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if (sd_journal_open (&journal, 0) < 0)
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return NULL;
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if (sd_journal_seek_tail (journal) < 0)
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goto failure;
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if (sd_journal_previous (journal) < 0)
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goto failure;
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if (sd_journal_next (journal) < 0)
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goto failure;
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if (-1 == (fd = sd_journal_get_fd (journal)))
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goto failure;
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self = (SysprofJournaldSource *)g_source_new (&sysprof_journald_source_funcs,
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sizeof (SysprofJournaldSource));
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self->journal = journal;
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self->func = func;
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self->func_data = func_data;
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self->func_data_destroy = func_data_destroy;
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g_source_add_unix_fd ((GSource *)self, fd, sd_journal_get_events (journal));
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return (GSource *)self;
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failure:
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g_clear_pointer (&journal, sd_journal_close);
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return NULL;
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}
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