其他进程能监听到其他进程信号

mkrtos_user/lib/letter-shell/demo/mkrtos/shell_test.c

@@ -0,0 +1,31 @@
+#include "shell.h"
+#include "cons_cli.h"
+#include "u_sig.h"
+#include "cons_cli.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <stddef.h>
+#include <string.h>
+#include <sys/time.h>
+#include <pthread.h>
+#include <errno.h>
+static int shell_sig_call_back(pid_t pid, umword_t sig_val)
+{
+    /*TODO:这个消息是init发送的，这里不能给init发送消息，否导致卡死*/
+    // cons_write_str("test");
+    return 0;
+}
+int shell_test_sig(int argc, char *argv[])
+{
+    if (argc < 2)
+    {
+        return -1;
+    }
+    pm_sig_func_set(shell_sig_call_back);
+    pid_t pid = atoi(argv[1]);
+
+    return pm_sig_watch(pid, 0 /*TODO:现在只有kill */);
+}
+SHELL_EXPORT_CMD(SHELL_CMD_PERMISSION(0) | SHELL_CMD_TYPE(SHELL_TYPE_CMD_MAIN), test_sig, shell_test_sig, shell_test_sig command);