X-Git-Url: http://wpitchoune.net/gitweb/?p=psensor-pkg-debian.git;a=blobdiff_plain;f=src%2Flib%2Fslog.c;fp=src%2Flib%2Fslog.c;h=d3e646db778dc90c2aaeeb3ac517dad4d9c7f782;hp=0000000000000000000000000000000000000000;hb=dcd813f21c83592155f712ff1acf450b483d8072;hpb=f055e7507526592d3a74c652f5f053701614c9c0

diff --git a/src/lib/slog.c b/src/lib/slog.c
new file mode 100644
index 0000000..d3e646d
--- /dev/null
+++ b/src/lib/slog.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2010-2013 jeanfi@gmail.com
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+#define _LARGEFILE_SOURCE 1
+#include "config.h"
+
+#include <locale.h>
+#include <libintl.h>
+#define _(str) gettext(str)
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "bool.h"
+#include "config.h"
+#include "log.h"
+#include "ptime.h"
+#include "slog.h"
+
+static FILE *file;
+static double *last_values;
+static int period;
+static struct psensor **sensors;
+static pthread_mutex_t *sensors_mutex;
+static pthread_t thread;
+static time_t st;
+
+static const char *DEFAULT_FILENAME = "sensors.log";
+
+static char *get_default_path()
+{
+	char *home, *path, *dir;
+
+	home = getenv("HOME");
+
+	if (home) {
+		dir = malloc(strlen(home)+1+strlen(".psensor")+1);
+		sprintf(dir, "%s/%s", home, ".psensor");
+		mkdir(dir, 0777);
+
+		path = malloc(strlen(dir)+1+strlen(DEFAULT_FILENAME)+1);
+		sprintf(path, "%s/%s", dir, DEFAULT_FILENAME);
+
+		free(dir);
+
+		return path;
+	} else {
+		log_warn(_("HOME variable not set."));
+		return strdup(DEFAULT_FILENAME);
+	}
+}
+
+static bool slog_open(const char *path, struct psensor **sensors)
+{
+	char *lpath, *t;
+
+	if (file) {
+		log_err(_("Sensor log file already open."));
+		return 0;
+	}
+
+	lpath = path ? (char *)path : get_default_path();
+
+	file = fopen(lpath, "a");
+
+	if (!file)
+		log_err(_("Cannot open sensor log file: %s."), lpath);
+
+	if (!path)
+		free((char *)lpath);
+
+	if (!file)
+		return 0;
+
+	st = time(NULL);
+	t = time_to_str(&st);
+
+	fprintf(file, "I,%s,%s\n", t, VERSION);
+
+	while (*sensors) {
+		fprintf(file, "S,%s,%x\n", (*sensors)->id,  (*sensors)->type);
+		sensors++;
+	}
+
+	fflush(file);
+
+	return 1;
+}
+
+static void slog_write_sensors(struct psensor **sensors)
+{
+	int count, i;
+	double v;
+	struct timeval tv;
+	bool first_call;
+
+	if (!file) {
+		log_err(_("Sensor log file not open."));
+		return ;
+	}
+
+	gettimeofday(&tv, NULL);
+
+	count = psensor_list_size(sensors);
+
+	if (last_values) {
+		first_call = 0;
+	} else {
+		first_call = 1;
+		last_values = malloc(count * sizeof(double));
+	}
+
+	fprintf(file, "%ld", (long int)(tv.tv_sec - st));
+	for (i = 0; i < count; i++) {
+		v = psensor_get_current_value(sensors[i]);
+
+		if (!first_call && last_values[i] == v)
+			fputc(',', file);
+		else
+			fprintf(file, ",%.1f", v);
+
+		last_values[i] = v;
+	}
+
+	fputc('\n', file);
+
+	fflush(file);
+}
+
+static void *slog_routine(void *data)
+{
+	while (1) {
+		pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+		pthread_mutex_lock(sensors_mutex);
+		slog_write_sensors(sensors);
+		pthread_mutex_unlock(sensors_mutex);
+		pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
+		sleep(period);
+	}
+
+	pthread_exit(0);
+}
+
+void slog_close()
+{
+	if (file) {
+		pthread_cancel(thread);
+
+		fclose(file);
+		file = NULL;
+		free(last_values);
+		last_values = NULL;
+	} else {
+		log_debug(_("Sensor log not open, cannot close."));
+	}
+}
+
+bool slog_activate(const char *path,
+		   struct psensor **ss,
+		   pthread_mutex_t *mutex,
+		   int p)
+{
+	bool ret;
+
+	sensors = ss;
+	sensors_mutex = mutex;
+	period = p;
+
+	pthread_mutex_lock(mutex);
+	ret = slog_open(path, sensors);
+	pthread_mutex_unlock(mutex);
+
+	if (ret)
+		pthread_create(&thread, NULL, slog_routine, NULL);
+
+	return ret;
+}