42#ifdef LOSCFG_SAVE_EXCINFO
107 PRINT_ERR(
"exc info buffer is not enough or vsnprintf_s is error.\n");
117 va_start(arglist,
format);
124 if ((hook == NULL) || (buf == NULL)) {
125 PRINT_ERR(
"Buf or hook is null.\n");
142 if ((buf == NULL) || (space == 0)) {
143 PRINT_ERR(
"buffer is null or space is zero\n");
152#define NOW_TIME_LENGTH 24
154 struct tm *tmTime = NULL;
155 CHAR nowTime[NOW_TIME_LENGTH];
158 tmTime = localtime(&t);
159 if (tmTime == NULL) {
162 (VOID)memset_s(nowTime,
sizeof(nowTime), 0,
sizeof(nowTime));
163 (VOID)strftime(nowTime, NOW_TIME_LENGTH,
"%Y-%m-%d %H:%M:%S", tmTime);
164#undef NOW_TIME_LENGTH
172#define EXCINFO_ALIGN_SIZE 64
182 (VOID)memset_s(buf, recordSpace + 1, 0, recordSpace + 1);
@ CMD_TYPE_EX
不支持标准命令参数输入,会把用户填写的命令关键字屏蔽掉,例如:输入ls /ramfs,传入给注册函数的参数只有/ramfs,而ls命令关键字并不会被传入。
void los_vfs_init(void)
Initializes the vfs filesystem
VOID(* log_read_write_fn)(UINT32 startAddr, UINT32 space, UINT32 rwFlag, CHAR *buf)
define the type of functions for reading or writing exception information.
VOID LOS_ExcInfoRegHook(UINT32 startAddr, UINT32 space, CHAR *buf, log_read_write_fn hook)
用于注册记录异常信息函数,并指定位置、空间和大小
VOID * LOS_MemAllocAlign(VOID *pool, UINT32 size, UINT32 boundary)
从指定内存池中申请size长度的内存且地址按boundary字节对齐的内存
UINT32 LOS_MemFree(VOID *pool, VOID *ptr)
释放从指定动态内存中申请的内存
UINT32 GetExcInfoIndex(VOID)
获取异常信息索引位
STATIC UINT32 g_recordSpace
SHELLCMD_ENTRY(readExcInfo_shellcmd, CMD_TYPE_EX, "excInfo", 0,(CmdCallBackFunc) OsShellCmdReadExcInfo)
STATIC UINT32 g_excInfoIndex
VOID SetRecordSpace(UINT32 space)
CHAR * GetExcInfoBuf(VOID)
获取异常信息的缓存
STATIC CHAR * g_excInfoBuf
INT32 OsShellCmdReadExcInfo(INT32 argc, CHAR **argv)
UINT32 GetRecordAddr(VOID)
VOID WriteExcInfoToBuf(const CHAR *format,...)
写异常信息到系统异常信息中心
UINT32 GetRecordSpace(VOID)
VOID SetRecordAddr(UINT32 addr)
log_read_write_fn GetExcInfoRW(VOID)
获取异常信息读写函数
VOID WriteExcBufVa(const CHAR *format, va_list arglist)
vsnprintf 为C标准库可变参数的实现函数 见于 ..\third_party\musl\kernel\src\stdio\vsnprintf.c
VOID SetExcInfoRW(log_read_write_fn func)
VOID SetExcInfoBuf(CHAR *buf)
设置异常信息的缓存
STATIC UINT32 g_recordAddr
STATIC log_read_write_fn g_excInfoRW
VOID OsRecordExcInfoTime(VOID)
记录异常信息产生的时间
VOID OsReadWriteExceptionInfo(UINT32 startAddr, UINT32 space, UINT32 flag, CHAR *buf)
VOID SetExcInfoIndex(UINT32 index)
设置异常信息索引位
u32_t(* CmdCallBackFunc)(u32_t argc, const char **argv)