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- //
- // ASLog.h
- // AsyncDisplayKit
- //
- // Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
- // This source code is licensed under the BSD-style license found in the
- // LICENSE file in the root directory of this source tree. An additional grant
- // of patent rights can be found in the PATENTS file in the same directory.
- //
- #pragma once
- #import <AsyncDisplayKit/ASAvailability.h>
- #define ASMultiplexImageNodeLogDebug(...)
- #define ASMultiplexImageNodeCLogDebug(...)
- #define ASMultiplexImageNodeLogError(...)
- #define ASMultiplexImageNodeCLogError(...)
- // Note: `<sys/kdebug_signpost.h>` only exists in Xcode 8 and later.
- #if PROFILE && __has_include("<sys/kdebug_signpost.h>")
- #import <sys/kdebug_signpost.h>
- // These definitions are required to build the backward-compatible kdebug trace
- // on the iOS 10 SDK. The kdebug_trace function crashes if run on iOS 9 and earlier.
- // It's valuable to support trace signposts on iOS 9, because A5 devices don't support iOS 10.
- #ifndef DBG_MACH_CHUD
- #define DBG_MACH_CHUD 0x0A
- #define DBG_FUNC_START 1
- #define DBG_FUNC_END 2
- #define DBG_APPS 33
- #define SYS_kdebug_trace 180
- #define KDBG_CODE(Class, SubClass, code) (((Class & 0xff) << 24) | ((SubClass & 0xff) << 16) | ((code & 0x3fff) << 2))
- #define APPSDBG_CODE(SubClass,code) KDBG_CODE(DBG_APPS, SubClass, code)
- #endif
- #define ASProfilingSignpost(x) \
- AS_AT_LEAST_IOS10 ? kdebug_signpost(x, 0, 0, 0, (uint32_t)(x % 4)) \
- : syscall(SYS_kdebug_trace, APPSDBG_CODE(DBG_MACH_CHUD, x) | DBG_FUNC_NONE, 0, 0, 0, (uint32_t)(x % 4));
- #define ASProfilingSignpostStart(x, y) \
- AS_AT_LEAST_IOS10 ? kdebug_signpost_start((uint32_t)x, (uintptr_t)y, 0, 0, (uint32_t)(x % 4)) \
- : syscall(SYS_kdebug_trace, APPSDBG_CODE(DBG_MACH_CHUD, x) | DBG_FUNC_START, (uintptr_t)y, 0, 0, (uint32_t)(x % 4));
- #define ASProfilingSignpostEnd(x, y) \
- AS_AT_LEAST_IOS10 ? kdebug_signpost_end((uint32_t)x, (uintptr_t)y, 0, 0, (uint32_t)(x % 4)) \
- : syscall(SYS_kdebug_trace, APPSDBG_CODE(DBG_MACH_CHUD, x) | DBG_FUNC_END, (uintptr_t)y, 0, 0, (uint32_t)(x % 4));
- #else
- #define ASProfilingSignpost(x)
- #define ASProfilingSignpostStart(x, y)
- #define ASProfilingSignpostEnd(x, y)
- #endif
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