X-Git-Url: http://git.wpitchoune.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fslog.c;h=b1c98ad585a0d25d6cc9f5c738e7391c1b3c715f;hb=aa07d69116d2067b168272f1ec566763356cf40f;hp=aed2a5b20313c98532e4521ff4154e31521da902;hpb=622e9d900e6c1ae9d90896d197360db3a06eb291;p=psensor.git

diff --git a/src/lib/slog.c b/src/lib/slog.c
index aed2a5b..b1c98ad 100644
--- a/src/lib/slog.c
+++ b/src/lib/slog.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010-2012 jeanfi@gmail.com
+ * 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
@@ -22,7 +22,11 @@
 
 #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"
@@ -32,18 +36,60 @@
 static FILE *file;
 static struct timeval stv;
 static double *last_values;
+static int period;
+static struct psensor **sensors;
+static pthread_mutex_t *sensors_mutex;
+static pthread_t thread;
 
-int slog_init(const char *path, struct psensor **sensors)
+static const char *DEFAULT_FILENAME = "sensors.log";
+
+static char *get_default_path()
 {
-	file = fopen(path, "a");
+	char *home, *path, *dir;
 
-	if (!file) {
-		log_err(_("Cannot open sensor log file: %s"), path);
+	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;
+
+	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;
+
 	if (gettimeofday(&stv, NULL)) {
-		log_err(_("slog_init: gettimeofday failed."));
+		log_err(_("gettimeofday failed."));
 		return 0;
 	}
 
@@ -59,23 +105,20 @@ int slog_init(const char *path, struct psensor **sensors)
 	return 1;
 }
 
-
-
-void slog_write_sensors(struct psensor **sensors)
+static void slog_write_sensors(struct psensor **sensors)
 {
 	int count, i;
 	double v;
 	struct timeval tv;
 	bool first_call;
 
-	if (!file)
-		return ;
-
-	if (gettimeofday(&tv, NULL)) {
-		log_err(_("slog_write_sensors: gettimeofday failed."));
+	if (!file) {
+		log_err(_("Sensor log file not open."));
 		return ;
 	}
 
+	gettimeofday(&tv, NULL);
+
 	count = psensor_list_size(sensors);
 
 	if (last_values) {
@@ -102,12 +145,51 @@ void slog_write_sensors(struct psensor **sensors)
 	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;
+}