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Diffstat (limited to 'mozglue/baseprofiler/public/ProfileBufferEntryKinds.h')
| -rw-r--r-- | mozglue/baseprofiler/public/ProfileBufferEntryKinds.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/mozglue/baseprofiler/public/ProfileBufferEntryKinds.h b/mozglue/baseprofiler/public/ProfileBufferEntryKinds.h new file mode 100644 index 0000000000..c8280a92d7 --- /dev/null +++ b/mozglue/baseprofiler/public/ProfileBufferEntryKinds.h @@ -0,0 +1,94 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef ProfileBufferEntryKinds_h +#define ProfileBufferEntryKinds_h + +#include <cstdint> + +namespace mozilla { + +// This is equal to sizeof(double), which is the largest non-char variant in +// |u|. +static constexpr size_t ProfileBufferEntryNumChars = 8; + +// NOTE! If you add entries, you need to verify if they need to be added to the +// switch statement in DuplicateLastSample! +// This will evaluate the MACRO with (KIND, TYPE, SIZE) +#define FOR_EACH_PROFILE_BUFFER_ENTRY_KIND(MACRO) \ + MACRO(CategoryPair, int, sizeof(int)) \ + MACRO(CollectionStart, double, sizeof(double)) \ + MACRO(CollectionEnd, double, sizeof(double)) \ + MACRO(Label, const char*, sizeof(const char*)) \ + MACRO(FrameFlags, uint64_t, sizeof(uint64_t)) \ + MACRO(DynamicStringFragment, char*, ProfileBufferEntryNumChars) \ + MACRO(JitReturnAddr, void*, sizeof(void*)) \ + MACRO(InnerWindowID, uint64_t, sizeof(uint64_t)) \ + MACRO(LineNumber, int, sizeof(int)) \ + MACRO(ColumnNumber, int, sizeof(int)) \ + MACRO(NativeLeafAddr, void*, sizeof(void*)) \ + MACRO(Pause, double, sizeof(double)) \ + MACRO(Resume, double, sizeof(double)) \ + MACRO(PauseSampling, double, sizeof(double)) \ + MACRO(ResumeSampling, double, sizeof(double)) \ + MACRO(Responsiveness, double, sizeof(double)) \ + MACRO(ThreadId, int, sizeof(int)) \ + MACRO(Time, double, sizeof(double)) \ + MACRO(TimeBeforeCompactStack, double, sizeof(double)) \ + MACRO(CounterId, void*, sizeof(void*)) \ + MACRO(CounterKey, uint64_t, sizeof(uint64_t)) \ + MACRO(Number, uint64_t, sizeof(uint64_t)) \ + MACRO(Count, int64_t, sizeof(int64_t)) \ + MACRO(ProfilerOverheadTime, double, sizeof(double)) \ + MACRO(ProfilerOverheadDuration, double, sizeof(double)) + +// The `Kind` is a single byte identifying the type of data that is actually +// stored in a `ProfileBufferEntry`, as per the list in +// `FOR_EACH_PROFILE_BUFFER_ENTRY_KIND`. +// +// This byte is also used to identify entries in ProfileChunkedBuffer blocks, +// for both "legacy" entries that do contain a `ProfileBufferEntry`, and for +// new types of entries that may carry more data of different types. +// TODO: Eventually each type of "legacy" entry should be replaced with newer, +// more efficient kinds of entries (e.g., stack frames could be stored in one +// bigger entry, instead of multiple `ProfileBufferEntry`s); then we could +// discard `ProfileBufferEntry` and move this enum to a more appropriate spot. +using ProfileBufferEntryKindUnderlyingType = uint8_t; + +enum class ProfileBufferEntryKind : ProfileBufferEntryKindUnderlyingType { + INVALID = 0, +#define KIND(KIND, TYPE, SIZE) KIND, + FOR_EACH_PROFILE_BUFFER_ENTRY_KIND(KIND) +#undef KIND + + // Any value under `LEGACY_LIMIT` represents a `ProfileBufferEntry`. + LEGACY_LIMIT, + + // Any value starting here does *not* represent a `ProfileBufferEntry` and + // requires separate decoding and handling. + + // Markers and their data. + Marker = LEGACY_LIMIT, + + // Entry with "running times", such as CPU usage measurements. + // Optional between TimeBeforeCompactStack and CompactStack. + RunningTimes, + + // Optional between TimeBeforeCompactStack and CompactStack. + UnresponsiveDurationMs, + + // Collection of legacy stack entries, must follow a ThreadId and + // TimeBeforeCompactStack (which are not included in the CompactStack; + // TimeBeforeCompactStack is equivalent to Time, but indicates that a + // CompactStack follows shortly afterwards). + CompactStack, + + MODERN_LIMIT +}; + +} // namespace mozilla + +#endif // ProfileBufferEntryKinds_h |