Check cpu idle time to prepare candidate processsubmit/tizen/20160803.012753accepted/tizen/wearable/20160804.080650accepted/tizen/tv/20160804.080736accepted/tizen/mobile/20160804.080910accepted/tizen/ivi/20160804.080819accepted/tizen/common/20160803.193309

Change-Id: Ie2c0551a417a2a06ab2891e6a467701e215178c3
Signed-off-by: Junghoon Park <jh9216.park@samsung.com>

4 files changed, 103 insertions, 6 deletions

diff --git a/inc/launchpad_common.h b/inc/launchpad_common.h
index 8263dec..8b70af4 100644
--- a/inc/launchpad_common.h
+++ b/inc/launchpad_common.h
@@ -102,6 +102,7 @@ void _appinfo_free(appinfo_t *menu_info);
 char *_appinfo_get_app_path(appinfo_t *menu_info);
 int _proc_get_attr_by_pid(int pid, char *buf, int size);
 int _close_all_fds(int except);
+void _get_cpu_idle(long long *total, long long *idle);
 
 int _mount_legacy_app_path(const char *app_root_path,
 			const char *pkgid);
diff --git a/packaging/default.loader.in b/packaging/default.loader.in
index 0ea64e5..d0d151c 100644
--- a/packaging/default.loader.in
+++ b/packaging/default.loader.in
@@ -3,8 +3,8 @@ NAME	hw-loader1
 EXE	/usr/bin/launchpad-loader
 APP_TYPE	capp|c++app
 HW_ACC		ON
-DETECTION_METHOD	TIMEOUT
-TIMEOUT		2000
+DETECTION_METHOD	TIMEOUT|VISIBILITY
+TIMEOUT		5000
 EXTRA		loader_type	 hw-loader
 EXTRA_ARRAY		preload
 EXTRA_ARRAY_VAL		@LIB_INSTALL_DIR@/libappcore-efl.so.1
@@ -22,8 +22,8 @@ ALTERNATIVE_LOADER	common-loader1
 NAME	common-loader1
 EXE	/usr/bin/launchpad-loader
 APP_TYPE	capp|c++app
-DETECTION_METHOD	TIMEOUT
-TIMEOUT		2000
+DETECTION_METHOD	TIMEOUT|VISIBILITY
+TIMEOUT		5000
 EXTRA		loader_type	common-loader
 EXTRA_ARRAY		preload
 EXTRA_ARRAY_VAL		@LIB_INSTALL_DIR@/libappcore-efl.so.1
diff --git a/src/launchpad.c b/src/launchpad.c
index 202ccbb..4fb2490 100755
--- a/src/launchpad.c
+++ b/src/launchpad.c
@@ -55,7 +55,7 @@
 #define PAD_ERR_REJECTED		-2
 #define PAD_ERR_INVALID_ARGUMENT	-3
 #define PAD_ERR_INVALID_PATH		-4
-
+#define CPU_CHECKER_TIMEOUT		1000
 
 typedef struct {
 	int type;
@@ -71,6 +71,9 @@ typedef struct {
 	char *loader_extra;
 	int detection_method;
 	int timeout_val;
+	long long cpu_total_time;
+	long long cpu_idle_time;
+	guint idle_checker;
 } candidate_process_context_t;
 
 typedef struct {
@@ -421,6 +424,7 @@ static int __prepare_candidate_process(int type, int loader_id)
 	if (cpt == NULL)
 		return -1;
 
+	_D("prepare candidate process");
 	memset(argbuf, ' ', LOADER_ARG_LEN);
 	argbuf[LOADER_ARG_LEN - 1] = '\0';
 	argv[LOADER_ARG_DUMMY] = argbuf;
@@ -497,6 +501,11 @@ static int __send_launchpad_loader(candidate_process_context_t *cpc,
 		cpc->timer = 0;
 	}
 
+	if (cpc->idle_checker > 0) {
+		g_source_remove(cpc->idle_checker);
+		cpc->idle_checker = 0;
+	}
+
 	__set_timer(cpc);
 	return pid;
 }
@@ -816,6 +825,10 @@ static gboolean __handle_loader_client_event(gpointer data)
 		if (cpc->timer > 0)
 			g_source_remove(cpc->timer);
 		cpc->timer = 0;
+		if (cpc->idle_checker > 0)
+			g_source_remove(cpc->idle_checker);
+		cpc->idle_checker = 0;
+
 		__prepare_candidate_process(cpc->type, cpc->loader_id);
 
 		return G_SOURCE_REMOVE;
@@ -915,6 +928,11 @@ static gboolean __handle_label_monitor(gpointer data)
 				cpc->timer = 0;
 			}
 
+			if (cpc->idle_checker > 0) {
+				g_source_remove(cpc->idle_checker);
+				cpc->idle_checker = 0;
+			}
+
 			_D("Dispose candidate process %d", cpc->pid);
 			__kill_process(cpc->pid);
 			close(cpc->send_fd);
@@ -930,10 +948,37 @@ static gboolean __handle_label_monitor(gpointer data)
 	return G_SOURCE_CONTINUE;
 }
 
+static gboolean __handle_idle_checker(gpointer data)
+{
+	long long total = 0;
+	long long idle = 0;
+	int per;
+	candidate_process_context_t *cpc = data;
+
+	_get_cpu_idle(&total, &idle);
+	if (total == cpc->cpu_total_time)
+		total++;
+
+	per = (idle - cpc->cpu_idle_time) * 100 / (total - cpc->cpu_total_time);
+	_D("CPU Idle : %d %d", per, cpc->type);
+
+	if (per >= 90) {
+		__prepare_candidate_process(cpc->type, cpc->loader_id);
+		cpc->idle_checker = 0;
+		return G_SOURCE_REMOVE;
+	}
+
+	cpc->cpu_idle_time = idle;
+	cpc->cpu_total_time = total;
+	return G_SOURCE_CONTINUE;
+}
+
 static int __dispatch_cmd_hint(bundle *kb, int detection_method)
 {
 	candidate_process_context_t *cpc;
 	GList *iter = candidate_slot_list;
+	long long total = 0;
+	long long idle = 0;
 
 	_W("cmd hint %d", detection_method);
 	while (iter) {
@@ -944,7 +989,16 @@ static int __dispatch_cmd_hint(bundle *kb, int detection_method)
 				g_source_remove(cpc->timer);
 				cpc->timer = 0;
 			}
-			__prepare_candidate_process(cpc->type, cpc->loader_id);
+
+			if (cpc->idle_checker > 0) {
+				g_source_remove(cpc->idle_checker);
+				cpc->idle_checker = 0;
+			}
+
+			_get_cpu_idle(&total, &idle);
+			cpc->cpu_idle_time = idle;
+			cpc->cpu_total_time = total;
+			cpc->idle_checker = g_timeout_add(CPU_CHECKER_TIMEOUT, __handle_idle_checker, cpc);
 		}
 
 		iter = g_list_next(iter);
@@ -1240,6 +1294,9 @@ static candidate_process_context_t *__add_slot(int type, int loader_id,
 	cpc->loader_extra = loader_extra ? strdup(loader_extra) : strdup("");
 	cpc->detection_method = detection_method;
 	cpc->timeout_val = timeout_val;
+	cpc->cpu_total_time = 0;
+	cpc->cpu_idle_time = 0;
+	cpc->idle_checker = 0;
 
 	fd = __listen_candidate_process(cpc->type, cpc->loader_id);
 	if (fd == -1) {
@@ -1278,6 +1335,8 @@ static int __remove_slot(int type, int loader_id)
 				g_source_remove(cpc->timer);
 			if (cpc->source > 0)
 				g_source_remove(cpc->source);
+			if (cpc->idle_checker > 0)
+				g_source_remove(cpc->idle_checker);
 
 			candidate_slot_list = g_list_delete_link(
 					candidate_slot_list, iter);
diff --git a/src/launchpad_common.c b/src/launchpad_common.c
index 0e9d63b..c4ffa98 100644
--- a/src/launchpad_common.c
+++ b/src/launchpad_common.c
@@ -31,6 +31,7 @@
 #include <linux/limits.h>
 #include <unistd.h>
 #include <tzplatform_config.h>
+#include <stdio.h>
 
 #include "launchpad_common.h"
 #include "key.h"
@@ -79,6 +80,42 @@ static int __read_proc(const char *path, char *buf, int size)
 	return ret;
 }
 
+void _get_cpu_idle(long long *total, long long *idle)
+{
+	FILE *fp;
+	int i;
+	long long sum = 0;
+	long long val;
+	long long iv = 0;
+
+	char buf[4]= { 0, };
+
+	fp = fopen("/proc/stat", "rt");
+
+	if (fp == NULL)
+		return;
+
+	if (fscanf(fp, "%3s", buf) == -1) {
+		fclose(fp);
+		return;
+	}
+
+	for (i = 0; i < 10; i++){
+		if (fscanf(fp, "%lld", &val) == -1) {
+			fclose(fp);
+			return;
+		}
+		sum += val;
+		if (i == 3) /* idle */
+			iv = val;
+	}
+
+	fclose(fp);
+
+	*total = sum;
+	*idle = iv;
+}
+
 void _set_sock_option(int fd, int cli)
 {
 	int size;