patch 4.0
This commit is contained in:
wangzelin.wzl
168
src/pl/ob_pl_exception_handling.h
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168
src/pl/ob_pl_exception_handling.h
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/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef OCEANBASE_SRC_PL_OB_PL_EXCEPTION_HANDLING_H_
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#define OCEANBASE_SRC_PL_OB_PL_EXCEPTION_HANDLING_H_
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#include "ob_pl_stmt.h"
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#include "lib/clang/11.0.1/include/unwind.h"
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namespace oceanbase
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{
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namespace pl
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{
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RLOCAL_EXTERN(_Unwind_Exception*, tl_eptr);
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extern ObPLException pre_reserved_e;
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static constexpr const char* ConditionType[MAX_TYPE] =
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{
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"ERROR_CODE",
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"SQL_STATE",
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"SQL_EXCEPTION",
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"SQL_WARNING",
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"NOT_FOUND",
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"OTHERS",
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};
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typedef struct _Unwind_Exception ObUnwindException;
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struct ObPLException
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{
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ObPLException() : type_(), body_() {}
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ObPLException(int64_t error_code);
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static uint32_t type_offset_bits() { return offsetof(ObPLException, type_) * 8; }
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static uint32_t body_offset_bits() { return offsetof(ObPLException, body_) * 8; }
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ObPLConditionValue type_;
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ObUnwindException body_;
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};
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class ObPLEH
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{
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public:
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ObPLEH() {}
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virtual ~ObPLEH() {}
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static ObUnwindException *eh_create_exception(int64_t pl_context, //obplcontext, for the purpose of saving error bt
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int64_t pl_function, // obplfunction, get the function addr
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int64_t loc, // the line and col number of this exception raised
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int64_t allocator,
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const ObPLConditionValue *value);
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static _Unwind_Reason_Code eh_personality(int version, _Unwind_Action actions,
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_Unwind_Exception_Class exceptionClass,
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ObUnwindException *exceptionObject,
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struct _Unwind_Context *context);
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static int eh_convert_exception(bool oracle_mode, int oberr, ObPLConditionType *type, int64_t *error_code, const char **sql_state, int64_t *str_len);
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static ObPLConditionType eh_classify_exception(const char *sql_state);
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public:
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static void eh_debug_int64(const char *name_ptr, int64_t name_len, int64_t object);
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static void eh_debug_int64ptr(const char *name_ptr, int64_t name_len, const int64_t *object);
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static void eh_debug_int32(const char *name_ptr, int64_t name_len, int32_t object);
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static void eh_debug_int32ptr(const char *name_ptr, int64_t name_len, const int32_t *object);
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static void eh_debug_int8(const char *name_ptr, int64_t name_len, int8_t object);
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static void eh_debug_int8ptr(const char *name_ptr, int64_t name_len, const int8_t *object);
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static void eh_debug_obj(const char *name_ptr, int64_t name_len, const ObObj *object);
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static void eh_debug_objparam(const char *name_ptr, int64_t name_len, const ObObjParam *object);
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private:
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static uintptr_t readULEB128(const uint8_t **data);
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static uintptr_t readSLEB128(const uint8_t **data);
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static uintptr_t readEncodedPointer(const uint8_t **data, uint8_t encoding);
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static unsigned getEncodingSize(uint8_t Encoding);
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static bool handleActionValue(int64_t *resultAction,
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uint8_t TTypeEncoding,
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const uint8_t *ClassInfo,
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uintptr_t actionEntry,
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uint64_t exceptionClass,
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struct _Unwind_Exception *exceptionObject);
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static int match_action_value(const ObPLConditionValue *action, const ObPLConditionValue *exception, int64_t &precedence);
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static _Unwind_Reason_Code handleLsda(int version, const uint8_t *lsda,
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_Unwind_Action actions,
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_Unwind_Exception_Class exceptionClass,
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struct _Unwind_Exception *exceptionObject,
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struct _Unwind_Context *context);
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template <typename Type_>
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static uintptr_t ReadType(const uint8_t *&p);
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static bool is_internal_error(int errorcode);
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};
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class ObPLEHService
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{
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public:
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ObPLEHService() :
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pl_exception_class_(0),
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pl_exception_base_offset_(0),
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eh_create_exception_(),
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eh_raise_exception_(),
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eh_resume_(),
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eh_personality_(),
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eh_convert_exception_(),
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eh_classify_exception() {}
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virtual ~ObPLEHService() {}
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public:
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static uint64_t get_exception_class()
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{
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uint64_t pl_exception_class = 0;
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const unsigned char exception_chars[] = {'o', 'b', '1', '\0', 'p', 'l', '\0', '\0'};
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pl_exception_class = exception_chars[0];
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for (int64_t i = 1; i < sizeof(exception_chars); ++i) {
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pl_exception_class <<= 8;
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pl_exception_class += exception_chars[i];
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}
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return pl_exception_class;
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}
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static int64_t get_exception_base_offset()
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{
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int64_t pl_exception_base_offset = 0;
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ObPLException exp;
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pl_exception_base_offset = reinterpret_cast<int64_t>(&exp) - reinterpret_cast<int64_t>(&exp.body_);
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return pl_exception_base_offset;
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}
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uint64_t pl_exception_class_;
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int64_t pl_exception_base_offset_;
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jit::ObLLVMFunction eh_create_exception_;
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jit::ObLLVMFunction eh_raise_exception_;
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jit::ObLLVMFunction eh_resume_;
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jit::ObLLVMFunction eh_personality_;
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jit::ObLLVMFunction eh_convert_exception_;
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jit::ObLLVMFunction eh_classify_exception;
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jit::ObLLVMFunction eh_debug_int64_;
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jit::ObLLVMFunction eh_debug_int64ptr_;
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jit::ObLLVMFunction eh_debug_int32_;
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jit::ObLLVMFunction eh_debug_int32ptr_;
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jit::ObLLVMFunction eh_debug_int8_;
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jit::ObLLVMFunction eh_debug_int8ptr_;
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jit::ObLLVMFunction eh_debug_obj_;
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jit::ObLLVMFunction eh_debug_objparam_;
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};
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}
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}
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#endif /* OCEANBASE_SRC_PL_OB_PL_EXCEPTION_HANDLING_H_ */
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