// Copyright 2016 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Note 1: Any file that includes this one should include object-macros-undef.h // at the bottom. // Note 2: This file is deliberately missing the include guards (the undeffing // approach wouldn't work otherwise). // // PRESUBMIT_INTENTIONALLY_MISSING_INCLUDE_GUARD // The accessors with RELAXED_, ACQUIRE_, and RELEASE_ prefixes should be used // for fields that can be written to and read from multiple threads at the same // time. See comments in src/base/atomicops.h for the memory ordering sematics. #include "src/base/memory.h" // V8 objects are defined as: // // V8_OBJECT class Foo : public Base { // ... // } V8_OBJECT_END; // // These macros are to enable packing down to 4-byte alignment (i.e. int32 // alignment, since we have int32 fields), and to add warnings which ensure that // there is no unwanted within-object padding. #if V8_CC_GNU #define V8_OBJECT_PUSH … #define V8_OBJECT_POP … #define V8_OBJECT … // GCC wants this pragma to be a new statement, but we prefer to have // V8_OBJECT_END look like part of the definition. Insert a semicolon before the // pragma to make gcc happy, and use static_assert(true) to swallow the next // semicolon. #define V8_OBJECT_END … #define V8_OBJECT_INNER_CLASS … #define V8_OBJECT_INNER_CLASS_END … #elif V8_CC_MSVC #define V8_OBJECT_PUSH … #define V8_OBJECT_POP … #define V8_OBJECT … #define V8_OBJECT_END … #define V8_OBJECT_INNER_CLASS … #define V8_OBJECT_INNER_CLASS_END … #else #error Unsupported compiler #endif // Since this changes visibility, it should always be last in a class // definition. #define OBJECT_CONSTRUCTORS … #define OBJECT_CONSTRUCTORS_IMPL … #define NEVER_READ_ONLY_SPACE … // TODO(leszeks): Add checks in the factory that we never allocate these // objects in RO space. #define NEVER_READ_ONLY_SPACE_IMPL … #define DECL_PRIMITIVE_GETTER … #define DECL_PRIMITIVE_SETTER … #define DECL_PRIMITIVE_ACCESSORS … #define DECL_BOOLEAN_ACCESSORS … #define DECL_INT_ACCESSORS … #define DECL_INT32_ACCESSORS … #define DECL_SANDBOXED_POINTER_ACCESSORS … #define DECL_UINT16_ACCESSORS … #define DECL_INT16_ACCESSORS … #define DECL_UINT8_ACCESSORS … #define DECL_RELAXED_PRIMITIVE_ACCESSORS … #define DECL_RELAXED_INT32_ACCESSORS … #define DECL_RELAXED_UINT32_ACCESSORS(name) … #define DECL_RELAXED_UINT16_ACCESSORS … #define DECL_RELAXED_UINT8_ACCESSORS(name) … #define DECL_GETTER … #define DEF_GETTER … #define DEF_RELAXED_GETTER … #define DEF_ACQUIRE_GETTER … #define DEF_HEAP_OBJECT_PREDICATE … #define TQ_FIELD_TYPE … #define DECL_FIELD_OFFSET_TQ … #define DECL_SETTER … #define DECL_ACCESSORS … #define DECL_ACCESSORS_LOAD_TAG … #define DECL_ACCESSORS_STORE_TAG … #define DECL_RELAXED_GETTER … #define DECL_RELAXED_SETTER … #define DECL_RELAXED_ACCESSORS … #define DECL_ACQUIRE_GETTER … #define DECL_RELEASE_SETTER … #define DECL_RELEASE_ACQUIRE_ACCESSORS … #define DECL_RELEASE_ACQUIRE_WEAK_ACCESSORS … #define DEF_PRIMITIVE_ACCESSORS … #define INT_ACCESSORS … #define INT32_ACCESSORS … #define UINT16_ACCESSORS … #define UINT8_ACCESSORS … #define RELAXED_INT32_ACCESSORS … #define RELAXED_UINT32_ACCESSORS(holder, name, offset) … #define RELAXED_UINT16_ACCESSORS … #define RELAXED_UINT8_ACCESSORS(holder, name, offset) … #define ACCESSORS_CHECKED2 … #define ACCESSORS_CHECKED … #define ACCESSORS … // TODO(jgruber): Eventually, all accessors should be ported to the NOCAGE // variant (which doesn't define a PtrComprCageBase overload). Once that's // done, remove the cage-ful macros (e.g. ACCESSORS) and rename the cage-less // macros (e.g. ACCESSORS_NOCAGE). #define ACCESSORS_NOCAGE … #define RENAME_TORQUE_ACCESSORS … #define RENAME_PRIMITIVE_TORQUE_ACCESSORS … #define ACCESSORS_RELAXED_CHECKED2 … #define ACCESSORS_RELAXED_CHECKED … #define ACCESSORS_RELAXED … // Similar to ACCESSORS_RELAXED above but with respective relaxed tags. #define RELAXED_ACCESSORS_CHECKED2 … #define RELAXED_ACCESSORS_CHECKED … #define RELAXED_ACCESSORS … #define RELEASE_ACQUIRE_GETTER_CHECKED(holder, name, type, offset, \ get_condition) … #define RELEASE_ACQUIRE_SETTER_CHECKED(holder, name, type, offset, \ set_condition) … #define RELEASE_ACQUIRE_ACCESSORS_CHECKED2 … #define RELEASE_ACQUIRE_ACCESSORS_CHECKED … #define RELEASE_ACQUIRE_ACCESSORS … #define WEAK_ACCESSORS_CHECKED2 … #define WEAK_ACCESSORS_CHECKED … #define WEAK_ACCESSORS … #define RELEASE_ACQUIRE_WEAK_ACCESSORS_CHECKED2 … #define RELEASE_ACQUIRE_WEAK_ACCESSORS_CHECKED … #define RELEASE_ACQUIRE_WEAK_ACCESSORS … // Getter that returns a Smi as an int and writes an int as a Smi. #define SMI_ACCESSORS_CHECKED … #define SMI_ACCESSORS … #define DECL_RELEASE_ACQUIRE_INT_ACCESSORS … #define RELEASE_ACQUIRE_SMI_ACCESSORS … #define DECL_RELAXED_INT_ACCESSORS(name) … #define RELAXED_SMI_ACCESSORS … #define BOOL_GETTER … #define BOOL_ACCESSORS … #define DECL_RELAXED_BOOL_ACCESSORS … #define RELAXED_BOOL_ACCESSORS … // Host objects in ReadOnlySpace can't define the isolate-less accessor. #define DECL_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST … // Host objects in ReadOnlySpace can't define the isolate-less accessor. #define EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST … #define DECL_EXTERNAL_POINTER_ACCESSORS … #define EXTERNAL_POINTER_ACCESSORS … #define DECL_TRUSTED_POINTER_GETTERS(name, type) … #define DECL_TRUSTED_POINTER_SETTERS(name, type) … #define DECL_TRUSTED_POINTER_ACCESSORS(name, type) … #define TRUSTED_POINTER_ACCESSORS(holder, name, type, offset, tag) … #define DECL_CODE_POINTER_ACCESSORS(name) … #define CODE_POINTER_ACCESSORS(holder, name, offset) … // Accessors for "protected" pointers, i.e. references from one trusted object // to another trusted object. For these pointers it can be assumed that neither // the pointer nor the pointed-to object can be manipulated by an attacker. #define DECL_PROTECTED_POINTER_ACCESSORS(name, type) … #define PROTECTED_POINTER_ACCESSORS(holder, name, type, offset) … #define DECL_RELEASE_ACQUIRE_PROTECTED_POINTER_ACCESSORS(name, type) … #define RELEASE_ACQUIRE_PROTECTED_POINTER_ACCESSORS(holder, name, type, \ offset) … #define BIT_FIELD_ACCESSORS2 … #define BIT_FIELD_ACCESSORS … #define RELAXED_INT16_ACCESSORS … #define FIELD_ADDR … #define SEQ_CST_READ_FIELD … #define ACQUIRE_READ_FIELD … #define RELAXED_READ_FIELD … #define RELAXED_READ_WEAK_FIELD … #define WRITE_FIELD … #define SEQ_CST_WRITE_FIELD … #define RELEASE_WRITE_FIELD … #define RELAXED_WRITE_FIELD … #define RELAXED_WRITE_WEAK_FIELD … #define SEQ_CST_SWAP_FIELD(p, offset, value) … #define SEQ_CST_COMPARE_AND_SWAP_FIELD(p, offset, expected, value) … #ifdef V8_DISABLE_WRITE_BARRIERS #define WRITE_BARRIER … #define WRITE_BARRIER_CPP … #else #define WRITE_BARRIER … #endif #ifdef V8_DISABLE_WRITE_BARRIERS #define WEAK_WRITE_BARRIER … #else #define WEAK_WRITE_BARRIER … #endif #ifdef V8_DISABLE_WRITE_BARRIERS #define EPHEMERON_KEY_WRITE_BARRIER … #elif V8_ENABLE_UNCONDITIONAL_WRITE_BARRIERS #define EPHEMERON_KEY_WRITE_BARRIER … #else #define EPHEMERON_KEY_WRITE_BARRIER … #endif #ifdef V8_DISABLE_WRITE_BARRIERS #define INDIRECT_POINTER_WRITE_BARRIER … #else #define INDIRECT_POINTER_WRITE_BARRIER(object, offset, tag, value) … #endif #ifdef V8_DISABLE_WRITE_BARRIERS #define JS_DISPATCH_HANDLE_WRITE_BARRIER … #else #define JS_DISPATCH_HANDLE_WRITE_BARRIER(object, handle) … #endif #ifdef V8_DISABLE_WRITE_BARRIERS #define CONDITIONAL_WRITE_BARRIER … #elif V8_ENABLE_UNCONDITIONAL_WRITE_BARRIERS #define CONDITIONAL_WRITE_BARRIER … #else #define CONDITIONAL_WRITE_BARRIER … #endif #ifdef V8_DISABLE_WRITE_BARRIERS #define CONDITIONAL_WEAK_WRITE_BARRIER … #elif V8_ENABLE_UNCONDITIONAL_WRITE_BARRIERS #define CONDITIONAL_WEAK_WRITE_BARRIER … #else #define CONDITIONAL_WEAK_WRITE_BARRIER … #endif #ifdef V8_DISABLE_WRITE_BARRIERS #define CONDITIONAL_EPHEMERON_KEY_WRITE_BARRIER … #else #define CONDITIONAL_EPHEMERON_KEY_WRITE_BARRIER … #endif #ifdef V8_DISABLE_WRITE_BARRIERS #define CONDITIONAL_INDIRECT_POINTER_WRITE_BARRIER … #else #define CONDITIONAL_INDIRECT_POINTER_WRITE_BARRIER(object, offset, tag, value, \ mode) … #endif #ifdef V8_ENABLE_SANDBOX #define CONDITIONAL_TRUSTED_POINTER_WRITE_BARRIER(object, offset, tag, value, \ mode) … #else #define CONDITIONAL_TRUSTED_POINTER_WRITE_BARRIER … #endif // V8_ENABLE_SANDBOX #define CONDITIONAL_CODE_POINTER_WRITE_BARRIER(object, offset, value, mode) … #define CONDITIONAL_PROTECTED_POINTER_WRITE_BARRIER(object, offset, value, \ mode) … #ifdef V8_DISABLE_WRITE_BARRIERS #define CONDITIONAL_JS_DISPATCH_HANDLE_WRITE_BARRIER … #else #define CONDITIONAL_JS_DISPATCH_HANDLE_WRITE_BARRIER(object, handle, mode) … #endif #define ACQUIRE_READ_INT8_FIELD … #define ACQUIRE_READ_INT32_FIELD … #define RELAXED_WRITE_INT8_FIELD … #define RELAXED_READ_INT8_FIELD … #define RELAXED_WRITE_UINT8_FIELD(p, offset, value) … #define RELAXED_READ_UINT8_FIELD(p, offset) … #define RELAXED_READ_UINT16_FIELD … #define RELAXED_WRITE_UINT16_FIELD … #define RELAXED_READ_INT16_FIELD … #define RELAXED_WRITE_INT16_FIELD … #define RELAXED_READ_UINT32_FIELD … #define ACQUIRE_READ_UINT32_FIELD … #define RELAXED_WRITE_UINT32_FIELD … #define RELEASE_WRITE_INT8_FIELD … #define RELEASE_WRITE_UINT32_FIELD … #define RELAXED_READ_INT32_FIELD … #if defined(V8_HOST_ARCH_64_BIT) #define RELAXED_READ_INT64_FIELD(p, offset) … #endif #define RELEASE_WRITE_INT32_FIELD … #define RELAXED_WRITE_INT32_FIELD … static_assert …; #define RELAXED_READ_INT_FIELD … #define RELAXED_WRITE_INT_FIELD … static_assert …; #define RELAXED_READ_UINT_FIELD … #define RELAXED_WRITE_UINT_FIELD … #define RELAXED_READ_BYTE_FIELD … #define ACQUIRE_READ_BYTE_FIELD … #define RELAXED_WRITE_BYTE_FIELD … #define RELEASE_WRITE_BYTE_FIELD … #ifdef OBJECT_PRINT #define DECL_PRINTER … #else #define DECL_PRINTER … #endif #ifdef VERIFY_HEAP #define DECL_VERIFIER … #define EXPORT_DECL_VERIFIER … #define DECL_STATIC_VERIFIER(Name) … #define EXPORT_DECL_STATIC_VERIFIER(Name) … #else #define DECL_VERIFIER … #define EXPORT_DECL_VERIFIER … #define DECL_STATIC_VERIFIER … #define EXPORT_DECL_STATIC_VERIFIER … #endif #define DEFINE_DEOPT_ELEMENT_ACCESSORS … #define DEFINE_DEOPT_ENTRY_ACCESSORS … #define TQ_OBJECT_CONSTRUCTORS … #define TQ_OBJECT_CONSTRUCTORS_IMPL … #define TQ_CPP_OBJECT_DEFINITION_ASSERTS …
Codebase Browser
chromium