diff --git a/inc/MESA_shm_ring_queue.h b/inc/MESA_shm_ring_queue.h
index 0c03f45..7c2432c 100644
--- a/inc/MESA_shm_ring_queue.h
+++ b/inc/MESA_shm_ring_queue.h
@@ -25,6 +25,7 @@ void MESA_shm_recycle_ring_queue(struct MESA_shm_queue_head *ring_queue_head);
 int MESA_shm_copy_buf_to_ring_queue(char *buf, int buflen, struct MESA_shm_queue_head *head, char *log_file, int log_file_len);
 int MESA_shm_ring_queue_is_empty(struct MESA_shm_queue_head *head);
 int MESA_shm_ring_queue_is_full(struct MESA_shm_queue_head *head);
+void MESA_shm_ring_queue_set_empty(struct MESA_shm_queue_head *head);
 
 
 
diff --git a/shm_consumer/MESA_shm_consumer.c b/shm_consumer/MESA_shm_consumer.c
index a807972..9ff435a 100644
--- a/shm_consumer/MESA_shm_consumer.c
+++ b/shm_consumer/MESA_shm_consumer.c
@@ -8,13 +8,22 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <time.h>
+#include <ctype.h>
 #include "list.h"
 
 #include "MESA_shm_ring_queue.h"
 
-#define DEFAUT_BUF_SIZE    256
-#define CONSUMER_SUCCESS       0
-#define CONSUMER_ERROR         -1
+#define DEFAUT_BUF_SIZE        256
+#define DEFAULT_COMMAND_LEN    1024
+#define CONSUMER_SUCCESS     0
+#define CONSUMER_ERROR       -1
+
+#define CONSUMER_OUTPUT_MODE_FILE       0
+#define CONSUMER_OUTPUT_MODE_TERMINAL   1
+#define CONSUMER_CARE_PID_ALL           0
+#define CONSUMER_CARE_PID_SPEC          1
+#define CONSUMER_CARE_PID_MAX_LEN       128
+
 struct log_file_list{
 	char log_file_pre[MESA_SHM_LOG_PATH_LEN];
 	char real_log_file[MESA_SHM_LOG_PATH_LEN];
@@ -24,7 +33,14 @@ struct log_file_list{
 	ino_t ino;
 	struct list_head list;	
 };
+struct care_pid_list{
+	int pid;
+	struct list_head list;
+};
 struct log_file_list g_log_file_list;
+struct care_pid_list g_care_pid_list;
+int g_output_mode = CONSUMER_OUTPUT_MODE_FILE;
+int g_care_pid = CONSUMER_CARE_PID_ALL;
 void init_ring_queue_head_arrray(struct MESA_shm_overview *ovw, struct MESA_shm_queue_head **ring_queue_head)
 {
 	int i = 0;
@@ -250,22 +266,242 @@ void consumer_ring_queue_to_file(struct MESA_shm_queue_head *head)
 		write(node->fd, buf, n);
 		head->rd_idx = (head->rd_idx + 1) % head->blknum;
 	}
+	return ;
+}
+void consumer_ring_queue_to_terminal(struct MESA_shm_queue_head *head, int producer_pid)
+{
+	char *p_file = NULL;
+	int *p_payload_len = NULL;
+	char *payload = NULL;
+	int payload_len = 0;
+	char buf[MESA_SHM_LOG_BUF_PREFIX_LEN + MESA_SHM_RING_QUEUE_BLOCK_BUFLEN] = {0};
+	int n = 0;
+	while(!MESA_shm_ring_queue_is_empty(head)){
+		p_payload_len = (int *)((char *)(head + 1) + (head->blksize * head->rd_idx) + MESA_SHM_LOG_PATH_LEN);
+		payload_len = *p_payload_len;
+		payload = (char *)(p_payload_len + 1);
+		n = snprintf(buf, sizeof(buf), "pid:%d, %s\n", producer_pid, payload);
+		write(STDOUT_FILENO, buf, n);
+		head->rd_idx = (head->rd_idx + 1) % head->blknum;
+	}
+	return ;
+}
+int producer_pid_is_cared(int producer_pid)
+{
+	struct care_pid_list *tmp;
+	struct care_pid_list *n;
+	list_for_each_entry_safe(tmp, n, &g_care_pid_list.list, list){
+		if(tmp->pid == producer_pid){
+			return 1;
+		}
+	}
+	return 0;
+}
+
+int check_care_pid_repeat(int pid)
+{
+	struct care_pid_list *tmp;
+	struct care_pid_list *n;
+	list_for_each_entry_safe(tmp, n, &g_care_pid_list.list, list){
+		if(tmp->pid == pid){
+			return CONSUMER_ERROR;
+		}
+	}
+	return CONSUMER_SUCCESS;
+}
+struct care_pid_list *create_care_pid_node(int pid)
+{
+	struct care_pid_list *node;
+	node = (struct care_pid_list *)malloc(sizeof(struct care_pid_list));
+	if(node == NULL){
+		printf("malloc pid node error\n");
+		return NULL;
+	}
+	node->pid = pid;
+	return node;
+}
+int add_care_pid_node(struct care_pid_list *node, int pid)
+{
+	if(check_care_pid_repeat(pid) == CONSUMER_SUCCESS){
+		list_add(&node->list, &g_care_pid_list.list);
+	}else{
+		free(node);
+		printf("pid repeat\n");
+		return CONSUMER_ERROR;
+	}
+	if(g_care_pid == CONSUMER_CARE_PID_ALL){
+		g_care_pid = CONSUMER_CARE_PID_SPEC;
+	}
+	return CONSUMER_SUCCESS;
+}
+int parse_care_pid(char *p_pid)
+{
+	char *cur;
+	char *p;
+	char tmp_pid_str[CONSUMER_CARE_PID_MAX_LEN] = {0};
+	int tmp_pid;
+	int argcc = 0;
+	struct care_pid_list *node = NULL;;
+	cur = p_pid;
+	p = p_pid;
+	while(*p){
+		if(*p == '\0'){
+			break;
+		}
+		if((*p < '0' || *p > '9') && !isspace(*p)){
+			printf("invalid pid\n");
+			return CONSUMER_ERROR;
+		}
+		p++;
+	}
+	while(isspace(*cur)){
+		cur++;
+	}
+	while(1){
+		if(*cur == '\0'){
+			break ;
+		}
+
+		if(!isspace(*cur)){
+			tmp_pid_str[argcc] = *cur;
+			argcc++;
+			cur++;
+		}else{
+			while(isspace(*cur)){
+				cur++;
+			}
+			tmp_pid = atoi(tmp_pid_str);
+			node = create_care_pid_node(tmp_pid);
+			if(node == NULL){
+				return CONSUMER_ERROR;
+			}
+			if(add_care_pid_node(node,tmp_pid) == CONSUMER_ERROR){
+				printf("add pid error\n");
+				return CONSUMER_ERROR;
+			}
+			memset(tmp_pid_str, 0 ,sizeof(tmp_pid_str));
+			argcc = 0;
+		}
+		if(argcc >= CONSUMER_CARE_PID_MAX_LEN){
+			printf("invalid pid\n");
+			return CONSUMER_ERROR;
+		}
+		if(*cur == 0 && tmp_pid_str[0] != '\0'){
+			tmp_pid = atoi(tmp_pid_str);
+			node = create_care_pid_node(tmp_pid);
+			if(node == NULL){
+				return CONSUMER_ERROR;
+			}
+			if(add_care_pid_node(node,tmp_pid) == CONSUMER_ERROR){
+				printf("add pid error\n");
+				return CONSUMER_ERROR;
+			}
+		}
+	}
+	return CONSUMER_SUCCESS;
+}
+
+int get_options(int argc, char **argv)
+{
+	char *p;
+	int i;
+	for(i = 1; i < argc; i++){
+		p = argv[i];
+		if(*p++ != '-'){
+			return CONSUMER_ERROR;
+		}
+		if(strcmp(p, "pid") == 0){
+			if(argv[++i]){
+				if(strcmp(argv[i], "all") == 0){
+					g_care_pid = CONSUMER_CARE_PID_ALL;
+				}else{
+					if(parse_care_pid(argv[i]) == CONSUMER_ERROR){
+						printf("parse pid error\n");
+						return CONSUMER_ERROR;
+					}
+				}				
+				
+			}else{
+				printf("miss parameter\n");
+				return CONSUMER_ERROR;
+			}
+		}else if(strcmp(p, "mode") == 0){
+			if(argv[++i]){
+				if(strcmp(argv[i], "file") == 0){
+					g_output_mode = CONSUMER_OUTPUT_MODE_FILE;
+				}else if(strcmp(argv[i], "terminal") == 0){
+					g_output_mode = CONSUMER_OUTPUT_MODE_TERMINAL;
+				}else{
+					printf("invalid option:%s\n",argv[i]);
+					return CONSUMER_ERROR;
+				}
+			}else{
+				printf("miss parameter\n");
+				return CONSUMER_ERROR;
+			}
+		}else{
+			printf("invalid option:%s\n",p);
+			return CONSUMER_ERROR;
+		}
+	}
+	return CONSUMER_SUCCESS;
+}
+void kill_old_process(char *process_name)
+{
+	FILE *fp = NULL;
+	char buf[DEFAUT_BUF_SIZE] = {0};
+	char ps_cmd[DEFAULT_COMMAND_LEN] = {0};
+	char kill_cmd[DEFAULT_COMMAND_LEN] = {0};
+	int pid = getpid();
+	int tmp_pid = 0;
+	snprintf(ps_cmd, sizeof(ps_cmd), "ps -ef | grep %s | grep -v grep | awk '{print $2}'", process_name);
+	fp = popen(ps_cmd, "r");
+	if(fp == NULL){
+		return ;
+	}
+	while((fgets(buf, sizeof(buf), fp)) != NULL){
+		tmp_pid = atoi(buf);
+		if(tmp_pid != pid){
+			snprintf(kill_cmd, sizeof(kill_cmd), "kill %d", tmp_pid);
+			system(kill_cmd);
+		}		
+	}
+	pclose(fp);
+	return ;	
+}
+
+
+void print_help(char *exe_name)
+{
+	printf("-pid       default all, optional parameter\n");
+	printf("-mode      default file, optional parameter\n");
+	printf("./%s -pid [ '$pid1 $pid2 $pid3...' | all ] -mode [ file | terminal ]\n",exe_name);
+	return ;
 }
 int main(int argc, char **argv)
 {
-
 	char *exe_name = get_exe_name(argv[0]);
-	if(consumer_is_running(exe_name)){
-		printf("consumer process is already running\n");
+	if(argc == 2 && argv[1] != NULL && strstr(argv[1], "help") != NULL){
+		print_help(exe_name);
 		return 0;
 	}
-	consumer_daemo();
+	if(argc == 2 && argv[1] != NULL && (strcmp(argv[1], "stop") == 0)){
+		kill_old_process(exe_name);
+		return 0;
+	}
+	INIT_LIST_HEAD(&g_care_pid_list.list);
+	if(get_options(argc, argv) < 0){
+		printf("parse options error\n");
+		return 0;
+	}
+	kill_old_process(exe_name);
+	if(g_output_mode == CONSUMER_OUTPUT_MODE_FILE){
+		consumer_daemo();
+	}
 	int i = 0;
 	struct MESA_shm_overview *shm_overview = NULL;
 	struct MESA_shm_overview *tmp_ovw = NULL;
 	struct MESA_shm_queue_head *ring_queue_head[MESA_SHM_RING_QUEUE_NUM] = {NULL};
-	int log_file_fd = -1;
-	struct log_file_list *log_file_node = NULL;
 	INIT_LIST_HEAD(&g_log_file_list.list);
 	shm_overview = MESA_shm_alloc_overview();
 	if(shm_overview == NULL){
@@ -284,10 +520,21 @@ int main(int argc, char **argv)
 					break ;
 				}
 			}
-			if(!MESA_shm_ring_queue_is_empty(ring_queue_head[i])){				
-				consumer_ring_queue_to_file(ring_queue_head[i]);
+			if(!MESA_shm_ring_queue_is_empty(ring_queue_head[i])){
+				if(g_care_pid == CONSUMER_CARE_PID_SPEC){
+					if(!producer_pid_is_cared(tmp_ovw->producer_pid)){
+						MESA_shm_ring_queue_set_empty(ring_queue_head[i]);
+						goto next;
+					}
+				}
+				if(g_output_mode == CONSUMER_OUTPUT_MODE_FILE){
+					consumer_ring_queue_to_file(ring_queue_head[i]);
+				}else{
+					consumer_ring_queue_to_terminal(ring_queue_head[i], tmp_ovw->producer_pid);
+				}
 			}
 		}
+	next:
 		usleep(5000);
 	}	
 	return 0;
diff --git a/src/MESA_shm_ring_queue.c b/src/MESA_shm_ring_queue.c
index 69c747f..f6012fb 100644
--- a/src/MESA_shm_ring_queue.c
+++ b/src/MESA_shm_ring_queue.c
@@ -181,6 +181,12 @@ int MESA_shm_ring_queue_is_full(struct MESA_shm_queue_head *head)
 		return 0;
 	}
 }
+void MESA_shm_ring_queue_set_empty(struct MESA_shm_queue_head *head)
+{
+	head->rd_idx = head->wr_idx;
+	return;
+}
+
 int MESA_shm_copy_buf_to_ring_queue(char *buf, int buflen, struct MESA_shm_queue_head *head, char *log_file, int log_file_len)
 {
 	int len = buflen < (MESA_SHM_RING_QUEUE_BLOCK_BUFLEN -1)?buflen:(MESA_SHM_RING_QUEUE_BLOCK_BUFLEN - 1);	
diff --git a/src/version.map b/src/version.map
index c453ef4..a4c52a9 100644
--- a/src/version.map
+++ b/src/version.map
@@ -1,4 +1,4 @@
 {
-  global: MESA*runtime_log*;GIT_VERSION_*;MESA_shm_alloc_overview;MESA_handle_fmt_rule_register;MESA_shm_ring_queue_is_empty;MESA_shm_ring_queue_is_full;
+  global: MESA*runtime_log*;GIT_VERSION_*;MESA_shm_alloc_overview;MESA_handle_fmt_rule_register;MESA_shm_ring_queue_is_empty;MESA_shm_ring_queue_is_full;MESA_shm_ring_queue_set_empty;
   local: *;
 };