mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-24 21:31:04 +00:00
3cc53df2c0
WASI lacks of the <atomic> support yet, so this patch is adding stub implementation of atomics for WASI. Differential Revision: https://phabricator.services.mozilla.com/D110215
469 lines
21 KiB
C++
469 lines
21 KiB
C++
/* -*- Mode: C++; tab-width: 8; 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 mozilla_AtomicBitfields_h
|
|
#define mozilla_AtomicBitfields_h
|
|
|
|
#include "mozilla/Assertions.h"
|
|
#include "mozilla/MacroArgs.h"
|
|
#include "mozilla/MacroForEach.h"
|
|
|
|
#include <limits>
|
|
#include <stdint.h>
|
|
#include <type_traits>
|
|
|
|
#ifdef __wasi__
|
|
# include "mozilla/WasiAtomic.h"
|
|
#else
|
|
# include <atomic>
|
|
#endif // __wasi__
|
|
|
|
namespace mozilla {
|
|
|
|
// Creates a series of atomic bitfields.
|
|
//
|
|
// |aBitfields| is the name of the underlying storage for the bitfields.
|
|
// |aBitFieldsSize| is the size of the underlying storage (8, 16, 32, or 64).
|
|
//
|
|
// Bitfields are specified as a triplet of (type, name, size), which mirrors
|
|
// the way you declare native C++ bitfields (bool mMyField1: 1). Trailing
|
|
// commas are not supported in the list of bitfields.
|
|
//
|
|
// Signed integer types are not supported by this Macro to avoid dealing with
|
|
// packing/unpacking the sign bit and C++'s general messiness around signed
|
|
// integer representations not being fully defined.
|
|
//
|
|
// You cannot request a single field that's the
|
|
// size of the the entire bitfield storage. Just use a normal atomic integer!
|
|
//
|
|
//
|
|
// ========================== SEMANTICS AND SAFETY ============================
|
|
//
|
|
// All fields are default-initialized to 0.
|
|
//
|
|
// In debug builds, storing a value to a bitfield that's larger than its bits
|
|
// can fit will trigger an assertion. In release builds, the value will just be
|
|
// masked off.
|
|
//
|
|
// If you request anything unsupported by this macro it should result in
|
|
// a compile-time error (either a static assert or just weird macro errors).
|
|
// For instance, this macro will statically prevent using more bits than
|
|
// |aBitFieldsSize|, so specifying the size is just to prevent accidentally
|
|
// making the storage bigger.
|
|
//
|
|
// Each field will get a Load$NAME and Store$Name method which will atomically
|
|
// load and store the requested value with a Sequentially Consistent memory
|
|
// order (to be on the safe side). Storing a field requires a compare-exchange,
|
|
// so a thread may get stalled if there's a lot of contention on the bitfields.
|
|
//
|
|
//
|
|
// ============================== MOTIVATION ==================================
|
|
//
|
|
// You might be wondering: why would I need atomic bitfields? Well as it turns
|
|
// out, bitfields and concurrency mess a lot of people up!
|
|
//
|
|
// CPUs don't have operations to write to a handful of bits -- they generally
|
|
// only have the precision of a byte. So when you use C++'s native bitfields,
|
|
// the compiler generates code to mask and shift the values in for you. This
|
|
// means writing to a single field will actually overwrite all the other
|
|
// bitfields that are packed in with it!
|
|
//
|
|
// In single-threaded code this is fine; the old values are loaded and written
|
|
// back by the compiler's generated code. But in concurrent code, it means
|
|
// that accessing two different fields can be an unexpected Data Race (which is
|
|
// Undefined Behavior!).
|
|
//
|
|
// By using MOZ_ATOMIC_BITFIELDS, you protect yourself from these Data Races,
|
|
// and don't have to worry about writes getting lost.
|
|
//
|
|
//
|
|
// ================================ EXAMPLE ===================================
|
|
//
|
|
// #include "mozilla/AtomicBitfields.h"
|
|
// #include <stdint.h>
|
|
//
|
|
//
|
|
// struct MyType {
|
|
// MOZ_ATOMIC_BITFIELDS(mAtomicFields, 8, (
|
|
// (bool, IsDownloaded, 1),
|
|
// (uint32_t, SomeData, 2),
|
|
// (uint8_t, OtherData, 5)
|
|
// ))
|
|
//
|
|
// int32_t aNormalInteger;
|
|
//
|
|
// explicit MyType(uint32_t aSomeData): aNormalInteger(7) {
|
|
// StoreSomeData(aSomeData);
|
|
// // Other bitfields were already default initialized to 0/false
|
|
// }
|
|
// };
|
|
//
|
|
//
|
|
// int main() {
|
|
// MyType val(3);
|
|
//
|
|
// if (!val.LoadIsDownloaded()) {
|
|
// val.StoreOtherData(2);
|
|
// val.StoreIsDownloaded(true);
|
|
// }
|
|
// }
|
|
//
|
|
//
|
|
// ============================== GENERATED ===================================
|
|
//
|
|
// This macro is a real mess to read because, well, it's a macro. So for the
|
|
// sake of anyone who has to review or modify its internals, here's a rough
|
|
// sketch of what the above example would expand to:
|
|
//
|
|
// struct MyType {
|
|
// // The actual storage of the bitfields, initialized to 0.
|
|
// std::atomic_uint8_t mAtomicFields{0};
|
|
//
|
|
// // How many bits were actually used (in this case, all of them).
|
|
// static const size_t mAtomicFields_USED_BITS = 8;
|
|
//
|
|
// // The offset values for each field.
|
|
// static const size_t mAtomicFieldsIsDownloaded = 0;
|
|
// static const size_t mAtomicFieldsSomeData = 1;
|
|
// static const size_t mAtomicFieldsOtherData = 3;
|
|
//
|
|
// // Quick safety guard to prevent capacity overflow.
|
|
// static_assert(mAtomicFields_USED_BITS <= 8);
|
|
//
|
|
// // Asserts that fields are reasonable.
|
|
// static_assert(8>1, "mAtomicFields: MOZ_ATOMIC_BITFIELDS field too big");
|
|
// static_assert(std::is_unsigned<bool>(), "mAtomicFields:
|
|
// MOZ_ATOMIC_BITFIELDS doesn't support signed payloads");
|
|
// // ...and so on
|
|
//
|
|
// // Load/Store methods for all the fields.
|
|
//
|
|
// bool LoadIsDownloaded() { ... }
|
|
// void StoreIsDownloaded(bool aValue) { ... }
|
|
//
|
|
// uint32_t LoadSomeData() { ... }
|
|
// void StoreSomeData(uint32_t aValue) { ... }
|
|
//
|
|
// uint8_t LoadOtherData() { ... }
|
|
// void StoreOtherData(uint8_t aValue) { ... }
|
|
//
|
|
//
|
|
// // Remainder of the struct body continues normally.
|
|
// int32_t aNormalInteger;
|
|
// explicit MyType(uint32_t aSomeData): aNormalInteger(7) {
|
|
// StoreSomeData(aSomeData);
|
|
// // Other bitfields were already default initialized to 0/false.
|
|
// }
|
|
// }
|
|
//
|
|
// Also if you're wondering why there's so many MOZ_CONCAT's -- it's because
|
|
// the preprocessor sometimes gets confused if we use ## on certain arguments.
|
|
// MOZ_CONCAT reliably kept the preprocessor happy, sorry it's so ugly!
|
|
//
|
|
//
|
|
// ==================== FIXMES / FUTURE WORK ==================================
|
|
//
|
|
// * It would be nice if LoadField could be IsField for booleans.
|
|
//
|
|
// * For the case of setting something to all 1's or 0's, we can use
|
|
// |fetch_or| or |fetch_and| instead of |compare_exchange_weak|. Is this
|
|
// worth providing? (Possibly for 1-bit boolean fields?)
|
|
//
|
|
// * Try harder to hide the atomic/enum/array internals from
|
|
// the outer struct?
|
|
//
|
|
#define MOZ_ATOMIC_BITFIELDS(aBitfields, aBitfieldsSize, aFields) \
|
|
std::atomic_uint##aBitfieldsSize##_t aBitfields{0}; \
|
|
\
|
|
static const size_t MOZ_CONCAT(aBitfields, _USED_BITS) = \
|
|
MOZ_FOR_EACH_SEPARATED(MOZ_ATOMIC_BITFIELDS_FIELD_SIZE, (+), (), \
|
|
aFields); \
|
|
\
|
|
MOZ_ROLL_EACH(MOZ_ATOMIC_BITFIELDS_OFFSET_HELPER1, (aBitfields, ), aFields) \
|
|
\
|
|
static_assert(MOZ_CONCAT(aBitfields, _USED_BITS) <= aBitfieldsSize, \
|
|
#aBitfields ": Maximum bits (" #aBitfieldsSize \
|
|
") exceeded for MOZ_ATOMIC_BITFIELDS instance"); \
|
|
\
|
|
MOZ_FOR_EACH(MOZ_ATOMIC_BITFIELDS_FIELD_HELPER, \
|
|
(aBitfields, aBitfieldsSize, ), aFields)
|
|
|
|
// Just a helper to unpack the head of the list.
|
|
#define MOZ_ATOMIC_BITFIELDS_OFFSET_HELPER1(aBitfields, aFields) \
|
|
MOZ_ATOMIC_BITFIELDS_OFFSET_HELPER2(aBitfields, MOZ_ARG_1 aFields, aFields);
|
|
|
|
// Just a helper to unpack the name and call the real function.
|
|
#define MOZ_ATOMIC_BITFIELDS_OFFSET_HELPER2(aBitfields, aField, aFields) \
|
|
MOZ_ATOMIC_BITFIELDS_OFFSET(aBitfields, MOZ_ARG_2 aField, aFields)
|
|
|
|
// To compute the offset of a field, why sum up all the offsets after it
|
|
// (inclusive) and subtract that from the total sum itself. We do this to swap
|
|
// the rolling sum that |MOZ_ROLL_EACH| gets us from descending to ascending.
|
|
#define MOZ_ATOMIC_BITFIELDS_OFFSET(aBitfields, aFieldName, aFields) \
|
|
static const size_t MOZ_CONCAT(aBitfields, aFieldName) = \
|
|
MOZ_CONCAT(aBitfields, _USED_BITS) - \
|
|
(MOZ_FOR_EACH_SEPARATED(MOZ_ATOMIC_BITFIELDS_FIELD_SIZE, (+), (), \
|
|
aFields));
|
|
|
|
// Just a more clearly named way of unpacking the size.
|
|
#define MOZ_ATOMIC_BITFIELDS_FIELD_SIZE(aArgs) MOZ_ARG_3 aArgs
|
|
|
|
// Just a helper to unpack the tuple and call the real function.
|
|
#define MOZ_ATOMIC_BITFIELDS_FIELD_HELPER(aBitfields, aBitfieldsSize, aArgs) \
|
|
MOZ_ATOMIC_BITFIELDS_FIELD(aBitfields, aBitfieldsSize, MOZ_ARG_1 aArgs, \
|
|
MOZ_ARG_2 aArgs, MOZ_ARG_3 aArgs)
|
|
|
|
// We need to disable this with coverity because it doesn't like checking that
|
|
// booleans are < 2 (because they always are).
|
|
#ifdef __COVERITY__
|
|
# define MOZ_ATOMIC_BITFIELDS_STORE_GUARD(aValue, aFieldSize)
|
|
#else
|
|
# define MOZ_ATOMIC_BITFIELDS_STORE_GUARD(aValue, aFieldSize) \
|
|
MOZ_ASSERT(((uint64_t)aValue) < (1ull << aFieldSize), \
|
|
"Stored value exceeded capacity of bitfield!")
|
|
#endif
|
|
|
|
// Generates the Load and Store methods for each field.
|
|
//
|
|
// Some comments here because inline macro comments are a pain in the neck:
|
|
//
|
|
// Most of the locals are forward declared to minimize messy macroified
|
|
// type declaration. Also a lot of locals are used to try to make things
|
|
// a little more clear, while also avoiding integer promotion issues.
|
|
// This is why some locals are literally just copying a value we already have:
|
|
// to force it to the right size.
|
|
//
|
|
// There's an annoying overflow case where a bitfields instance has a field
|
|
// that is the same size as the bitfields. Rather than trying to handle that,
|
|
// we just static_assert against it.
|
|
//
|
|
//
|
|
// BITMATH EXPLAINED:
|
|
//
|
|
// For |Load$Name|:
|
|
//
|
|
// mask = ((1 << fieldSize) - 1) << offset
|
|
//
|
|
// If you subtract 1 from a value with 1 bit set you get all 1's below that bit.
|
|
// This is perfect for ANDing out |fieldSize| bits. We shift by |offset| to get
|
|
// it in the right place.
|
|
//
|
|
// value = (aBitfields.load() & mask) >> offset
|
|
//
|
|
// This sets every bit we're not interested in to 0. Shifting the result by
|
|
// |offset| converts the value back to its native format, ready to be cast
|
|
// up to an integer type.
|
|
//
|
|
//
|
|
// For |Store$Name|:
|
|
//
|
|
// packedValue = (resizedValue << offset) & mask
|
|
//
|
|
// This converts a native value to the packed format. If the value is in bounds,
|
|
// the AND will do nothing. If it's out of bounds (not checked in release),
|
|
// then it will cause the value to wrap around by modulo 2^aFieldSize, just like
|
|
// a normal uint.
|
|
//
|
|
// clearedValue = oldValue & ~mask;
|
|
//
|
|
// This clears the bits where our field is stored on our bitfield storage by
|
|
// ANDing it with an inverted (NOTed) mask.
|
|
//
|
|
// newValue = clearedValue | packedValue;
|
|
//
|
|
// Once we have |packedValue| and |clearedValue| they just need to be ORed
|
|
// together to merge the new field value with the old values of all the other
|
|
// fields.
|
|
//
|
|
// This last step is done in a while loop because someone else can modify
|
|
// the bits before we have a chance to. If we didn't guard against this,
|
|
// our write would undo the write the other thread did. |compare_exchange_weak|
|
|
// is specifically designed to handle this. We give it what we expect the
|
|
// current value to be, and what we want it to be. If someone else modifies
|
|
// the bitfields before us, then we will reload the value and try again.
|
|
//
|
|
// Note that |compare_exchange_weak| writes back the actual value to the
|
|
// "expected" argument (it's passed by-reference), so we don't need to do
|
|
// another load in the body of the loop when we fail to write our result.
|
|
#define MOZ_ATOMIC_BITFIELDS_FIELD(aBitfields, aBitfieldsSize, aFieldType, \
|
|
aFieldName, aFieldSize) \
|
|
static_assert(aBitfieldsSize > aFieldSize, \
|
|
#aBitfields ": MOZ_ATOMIC_BITFIELDS field too big"); \
|
|
static_assert(std::is_unsigned<aFieldType>(), #aBitfields \
|
|
": MOZ_ATOMIC_BITFIELDS doesn't support signed payloads"); \
|
|
\
|
|
aFieldType MOZ_CONCAT(Load, aFieldName)() const { \
|
|
uint##aBitfieldsSize##_t fieldSize, mask, masked, value; \
|
|
size_t offset = MOZ_CONCAT(aBitfields, aFieldName); \
|
|
fieldSize = aFieldSize; \
|
|
mask = ((1ull << fieldSize) - 1ull) << offset; \
|
|
masked = aBitfields.load() & mask; \
|
|
value = (masked >> offset); \
|
|
return value; \
|
|
} \
|
|
\
|
|
void MOZ_CONCAT(Store, aFieldName)(aFieldType aValue) { \
|
|
MOZ_ATOMIC_BITFIELDS_STORE_GUARD(aValue, aFieldSize); \
|
|
uint##aBitfieldsSize##_t fieldSize, mask, resizedValue, packedValue, \
|
|
oldValue, clearedValue, newValue; \
|
|
size_t offset = MOZ_CONCAT(aBitfields, aFieldName); \
|
|
fieldSize = aFieldSize; \
|
|
mask = ((1ull << fieldSize) - 1ull) << offset; \
|
|
resizedValue = aValue; \
|
|
packedValue = (resizedValue << offset) & mask; \
|
|
oldValue = aBitfields.load(); \
|
|
do { \
|
|
clearedValue = oldValue & ~mask; \
|
|
newValue = clearedValue | packedValue; \
|
|
} while (!aBitfields.compare_exchange_weak(oldValue, newValue)); \
|
|
}
|
|
|
|
// OK SO THIS IS A GROSS HACK. GCC 10.2 (and below) has a bug[1] where it
|
|
// doesn't allow a static array to reference itself in its initializer, so we
|
|
// need to create a hacky way to produce a rolling sum of all the offsets.
|
|
//
|
|
// To do this, we make a tweaked version of |MOZ_FOR_EACH| which instead of
|
|
// passing just one argument to |aMacro| it passes the remaining values of
|
|
// |aArgs|.
|
|
//
|
|
// This allows us to expand an input (a, b, c, d) quadratically to:
|
|
//
|
|
// int sum1 = a + b + c + d;
|
|
// int sum2 = b + c + d;
|
|
// int sum3 = c + d;
|
|
// int sum4 = d;
|
|
//
|
|
// So all of this is a copy-paste of |MOZ_FOR_EACH| except the definition
|
|
// of |MOZ_FOR_EACH_HELPER| no longer extracts an argument with |MOZ_ARG_1|.
|
|
// Also this is restricted to 32 arguments just to reduce footprint a little.
|
|
//
|
|
// If the GCC bug is ever fixed, then this hack can be removed, and we can
|
|
// use the non-quadratic version that was originally written[2]. In case
|
|
// that link dies, a brief summary of that implementation:
|
|
//
|
|
// * Associate each field with an index by creating an `enum class` with
|
|
// entries for each field (an existing gecko patten).
|
|
//
|
|
// * Calculate offsets with a constexpr static array whose initializer
|
|
// self-referentially adds the contents of the previous index to the
|
|
// compute the current one.
|
|
//
|
|
// * Index into this array with the enum.
|
|
//
|
|
// [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97234
|
|
// [2]: https://phabricator.services.mozilla.com/D91622?id=346499
|
|
#define MOZ_ROLL_EACH_EXPAND_HELPER(...) __VA_ARGS__
|
|
#define MOZ_ROLL_EACH_GLUE(a, b) a b
|
|
#define MOZ_ROLL_EACH_SEPARATED(aMacro, aSeparator, aFixedArgs, aArgs) \
|
|
MOZ_ROLL_EACH_GLUE(MOZ_PASTE_PREFIX_AND_ARG_COUNT( \
|
|
MOZ_ROLL_EACH_, MOZ_ROLL_EACH_EXPAND_HELPER aArgs), \
|
|
(aMacro, aSeparator, aFixedArgs, aArgs))
|
|
#define MOZ_ROLL_EACH(aMacro, aFixedArgs, aArgs) \
|
|
MOZ_ROLL_EACH_SEPARATED(aMacro, (), aFixedArgs, aArgs)
|
|
|
|
#define MOZ_ROLL_EACH_HELPER_GLUE(a, b) a b
|
|
#define MOZ_ROLL_EACH_HELPER(aMacro, aFixedArgs, aArgs) \
|
|
MOZ_ROLL_EACH_HELPER_GLUE(aMacro, \
|
|
(MOZ_ROLL_EACH_EXPAND_HELPER aFixedArgs aArgs))
|
|
|
|
#define MOZ_ROLL_EACH_0(m, s, fa, a)
|
|
#define MOZ_ROLL_EACH_1(m, s, fa, a) MOZ_ROLL_EACH_HELPER(m, fa, a)
|
|
#define MOZ_ROLL_EACH_2(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_1(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_3(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_2(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_4(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_3(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_5(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_4(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_6(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_5(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_7(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_6(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_8(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_7(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_9(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_8(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_10(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_9(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_11(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_10(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_12(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_11(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_13(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_12(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_14(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_13(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_15(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_14(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_16(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_15(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_17(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_16(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_18(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_17(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_19(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_18(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_20(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_19(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_21(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_20(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_22(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_21(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_23(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_22(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_24(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_23(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_25(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_24(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_26(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_25(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_27(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_26(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_28(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_27(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_29(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_28(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_30(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_29(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_31(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_30(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
#define MOZ_ROLL_EACH_32(m, s, fa, a) \
|
|
MOZ_ROLL_EACH_HELPER(m, fa, a) \
|
|
MOZ_ROLL_EACH_EXPAND_HELPER s MOZ_ROLL_EACH_31(m, s, fa, (MOZ_ARGS_AFTER_1 a))
|
|
} // namespace mozilla
|
|
#endif /* mozilla_AtomicBitfields_h */
|