1/* 2 * Copyright (C) 2012, 2013, 2014 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef ExitKind_h 27#define ExitKind_h 28 29namespace JSC { 30 31enum ExitKind : uint8_t { 32 ExitKindUnset, 33 BadType, // We exited because a type prediction was wrong. 34 BadFunction, // We exited because we made an incorrect assumption about what function we would see. 35 BadExecutable, // We exited because we made an incorrect assumption about what executable we would see. 36 BadCache, // We exited because an inline cache was wrong. 37 BadWeakConstantCache, // We exited because a cache on a weak constant (usually a prototype) was wrong. 38 BadCacheWatchpoint, // Same as BadCache but from a watchpoint. 39 BadWeakConstantCacheWatchpoint, // Same as BadWeakConstantCache but from a watchpoint. 40 BadIndexingType, // We exited because an indexing type was wrong. 41 Overflow, // We exited because of overflow. 42 NegativeZero, // We exited because we encountered negative zero. 43 Int52Overflow, // We exited because of an Int52 overflow. 44 StoreToHole, // We had a store to a hole. 45 LoadFromHole, // We had a load from a hole. 46 OutOfBounds, // We had an out-of-bounds access to an array. 47 InadequateCoverage, // We exited because we ended up in code that didn't have profiling coverage. 48 ArgumentsEscaped, // We exited because arguments escaped but we didn't expect them to. 49 NotStringObject, // We exited because we shouldn't have attempted to optimize string object access. 50 Uncountable, // We exited for none of the above reasons, and we should not count it. Most uses of this should be viewed as a FIXME. 51 UncountableInvalidation, // We exited because the code block was invalidated; this means that we've already counted the reasons why the code block was invalidated. 52 UncountableWatchpoint, // We exited because of a watchpoint, which isn't counted because watchpoints do tracking themselves. 53 WatchdogTimerFired, // We exited because we need to service the watchdog timer. 54 DebuggerEvent // We exited because we need to service the debugger. 55}; 56 57const char* exitKindToString(ExitKind); 58bool exitKindIsCountable(ExitKind); 59 60inline bool isWatchpoint(ExitKind kind) 61{ 62 switch (kind) { 63 case BadCacheWatchpoint: 64 case BadWeakConstantCacheWatchpoint: 65 case UncountableWatchpoint: 66 return true; 67 default: 68 return false; 69 } 70} 71 72} // namespace JSC 73 74namespace WTF { 75 76class PrintStream; 77void printInternal(PrintStream&, JSC::ExitKind); 78 79} // namespace WTF 80 81#endif // ExitKind_h 82 83