gfwleak/mesa-framework-mesa-handle-logger
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使用进程间共享的信号量，标记消费者进程是否正在运行

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guo_peixu
2022-06-28 18:42:05 +08:00
parent c059e7479e
commit dab9b5c03d
5 changed files with 95 additions and 4 deletions
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34
shm_consumer/MESA_shm_consumer.c
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@@ -1,6 +1,7 @@
#include <stdio.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/sem.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
@@ -43,6 +44,8 @@ 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;
int g_semid = -1;
void init_ring_queue_head_arrray(struct MESA_shm_overview *ovw, struct MESA_shm_queue_head **ring_queue_head)
{
int i = 0;
@@ -52,7 +55,10 @@ void init_ring_queue_head_arrray(struct MESA_shm_overview *ovw, struct MESA_shm_
if(tmp_ovw->shmid == -1){
break;
}
ring_queue_head[i] = shmat(tmp_ovw->shmid, NULL, 0);
ring_queue_head[i] = shmat(tmp_ovw->shmid, NULL, 0);
if(ring_queue_head[i] == (struct MESA_shm_queue_head *)-1){
ring_queue_head[i] = NULL;
}
}
return ;
}
@@ -507,6 +513,30 @@ error:
pclose(fp);
return -1;
}
void MESA_shm_sem_p(int semid)
{
if(g_semid == -1){
return ;
}
struct sembuf sem_b;
sem_b.sem_num = 0;
sem_b.sem_op = -1;
sem_b.sem_flg = SEM_UNDO;
semop(semid, &sem_b, 1);
return ;
}
void MESA_shm_sem_v(int semid)
{
if(g_semid == -1){
return ;
}
struct sembuf sem_b;
sem_b.sem_num = 0;
sem_b.sem_op = 1;
sem_b.sem_flg = SEM_UNDO;
semop(g_semid, &sem_b, 1);
return ;
}
void print_help(char *exe_name)
{
@@ -537,6 +567,8 @@ int main(int argc, char **argv)
}else{
g_cur_tty_fd = get_cur_tty_fd();
}
g_semid = MESA_shm_alloc_sem();
MESA_shm_sem_p(g_semid);
int i = 0;
struct MESA_shm_overview *shm_overview = NULL;
struct MESA_shm_overview *tmp_ovw = NULL;