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f44cbe4697
Move the ObjC class name stability check logic to the Swift runtime, exposing it as a new SPI called _swift_isObjCTypeNameSerializable. Update the reporting logic. The ObjC names of generic classes are considered stable now, but private classes and classes defined in function bodies or other anonymous contexts are unstable by design. On the overlay side, rewrite the check’s implementation in Swift and considerably simplify it. rdar://57809977
83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
//===------------------------------------------------------------*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#import <Foundation/Foundation.h>
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#import <objc/runtime.h>
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#import <objc/message.h>
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#import <sys/fcntl.h>
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#import <alloca.h>
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#import <stdlib.h>
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#import <malloc/malloc.h>
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#import <pthread.h>
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#import "FoundationShimSupport.h"
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#import "NSCalendarShims.h"
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#import "NSCharacterSetShims.h"
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#import "NSCoderShims.h"
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#import "NSDataShims.h"
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#import "NSDictionaryShims.h"
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#import "NSErrorShims.h"
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#import "NSFileManagerShims.h"
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#import "NSIndexPathShims.h"
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#import "NSIndexSetShims.h"
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#import "NSKeyedArchiverShims.h"
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#import "NSLocaleShims.h"
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#import "NSTimeZoneShims.h"
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#import "NSUndoManagerShims.h"
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typedef struct {
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void *_Nonnull memory;
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size_t capacity;
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_Bool onStack;
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} _ConditionalAllocationBuffer;
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static inline _Bool _resizeConditionalAllocationBuffer(_ConditionalAllocationBuffer *_Nonnull buffer, size_t amt) {
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size_t amount = malloc_good_size(amt);
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if (amount <= buffer->capacity) { return true; }
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void *newMemory;
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if (buffer->onStack) {
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newMemory = malloc(amount);
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if (newMemory == NULL) { return false; }
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memcpy(newMemory, buffer->memory, buffer->capacity);
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buffer->onStack = false;
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} else {
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newMemory = realloc(buffer->memory, amount);
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if (newMemory == NULL) { return false; }
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}
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if (newMemory == NULL) { return false; }
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buffer->memory = newMemory;
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buffer->capacity = amount;
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return true;
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}
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static inline _Bool _withStackOrHeapBuffer(size_t amount, void (__attribute__((noescape)) ^ _Nonnull applier)(_ConditionalAllocationBuffer *_Nonnull)) {
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_ConditionalAllocationBuffer buffer;
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buffer.capacity = malloc_good_size(amount);
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buffer.onStack = (pthread_main_np() != 0 ? buffer.capacity < 2048 : buffer.capacity < 512);
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buffer.memory = buffer.onStack ? alloca(buffer.capacity) : malloc(buffer.capacity);
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if (buffer.memory == NULL) { return false; }
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applier(&buffer);
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if (!buffer.onStack) {
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free(buffer.memory);
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}
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return true;
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}
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@protocol _NSKVOCompatibilityShim <NSObject>
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+ (void)_noteProcessHasUsedKVOSwiftOverlay;
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@end
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// Exported by libswiftCore:
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extern bool _swift_isObjCTypeNameSerializable(Class theClass);
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extern void _swift_reportToDebugger(uintptr_t flags, const char *message, void *details);
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