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new: shell中的free命令

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This commit is contained in:
fslongjin
2022-08-07 21:17:02 +08:00
parent 16ad3e8719
commit 7fd5330195
2 changed files with 45 additions and 1 deletions
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37
user/apps/shell/cmd.c
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@ -32,6 +32,7 @@ struct built_in_cmd_t shell_cmds[] =
{"reboot", shell_cmd_reboot},
{"touch", shell_cmd_touch},
{"about", shell_cmd_about},
{"free", shell_cmd_free},
{"help", shell_help},
};
@ -460,12 +461,46 @@ int shell_cmd_about(int argc, char **argv)
* @param argv
* @return int
*/
// todo:
int shell_cmd_reboot(int argc, char **argv)
{
return syscall_invoke(SYS_REBOOT, 0, 0, 0, 0, 0, 0, 0, 0);
}
int shell_cmd_free(int argc, char **argv)
{
int retval = 0;
if (argc == 2 && strcmp("-m", argv[1]) != 0)
{
retval = -EINVAL;
printf("Invalid argument: %s\n", argv[1]);
goto done;
}
struct mstat_t mst = {0};
retval = mstat(&mst);
if(retval!=0)
{
printf("Failed: retval=%d", retval);
goto done;
}
printf("\ttotal\tused\tfree\tshared\tcache\tavailable\n");
printf("Mem:\t");
if(argc==1) // 按照kb显示
{
printf("%ld\t%ld\t%ld\t%ld\t%ld\t%ld\t\n", mst.total>>10,mst.used>>10,mst.free>>10, mst.shared>>10, mst.cache_used>>10, mst.available>>10);
}
else // 按照MB显示
{
printf("%ld\t%ld\t%ld\t%ld\t%ld\t%ld\t\n", mst.total>>20,mst.used>>20,mst.free>>20, mst.shared>>20, mst.cache_used>>20, mst.available>>20);
}
done:;
if (argv != NULL)
free(argv);
return retval;
}
/**
* @brief 解析shell命令
*