89 lines · cpp
1//===-- CoreMedia.cpp -----------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "CoreMedia.h"10 11#include "lldb/Utility/Flags.h"12#include "lldb/Utility/Log.h"13 14#include "lldb/Symbol/TypeSystem.h"15#include "lldb/Target/Target.h"16#include <cinttypes>17 18using namespace lldb;19using namespace lldb_private;20using namespace lldb_private::formatters;21 22bool lldb_private::formatters::CMTimeSummaryProvider(23 ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {24 CompilerType type = valobj.GetCompilerType();25 if (!type.IsValid())26 return false;27 28 auto type_system = type.GetTypeSystem();29 if (!type_system)30 return false;31 // fetch children by offset to compensate for potential lack of debug info32 auto int64_ty =33 type_system->GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, 64);34 auto int32_ty =35 type_system->GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, 32);36 37 auto value_sp(valobj.GetSyntheticChildAtOffset(0, int64_ty, true));38 auto timescale_sp(valobj.GetSyntheticChildAtOffset(8, int32_ty, true));39 auto flags_sp(valobj.GetSyntheticChildAtOffset(12, int32_ty, true));40 41 if (!value_sp || !timescale_sp || !flags_sp)42 return false;43 44 auto value = value_sp->GetValueAsUnsigned(0);45 auto timescale = (int32_t)timescale_sp->GetValueAsUnsigned(46 0); // the timescale specifies the fraction of a second each unit in the47 // numerator occupies48 auto flags = Flags(flags_sp->GetValueAsUnsigned(0) &49 0x00000000000000FF); // the flags I need sit in the LSB50 51 const unsigned int FlagPositiveInf = 4;52 const unsigned int FlagNegativeInf = 8;53 const unsigned int FlagIndefinite = 16;54 55 if (flags.AnySet(FlagIndefinite)) {56 stream.Printf("indefinite");57 return true;58 }59 60 if (flags.AnySet(FlagPositiveInf)) {61 stream.Printf("+oo");62 return true;63 }64 65 if (flags.AnySet(FlagNegativeInf)) {66 stream.Printf("-oo");67 return true;68 }69 70 switch (timescale) {71 case 0:72 return false;73 case 1:74 stream.Printf("%" PRId64 " seconds", value);75 return true;76 case 2:77 stream.Printf("%" PRId64 " half seconds", value);78 return true;79 case 3:80 stream.Printf("%" PRId64 " third%sof a second", value,81 value == 1 ? " " : "s ");82 return true;83 default:84 stream.Printf("%" PRId64 " %" PRId32 "th%sof a second", value, timescale,85 value == 1 ? " " : "s ");86 return true;87 }88}89