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https://github.com/mozilla/gecko-dev.git
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Backed out 2 changesets (bug 1616298)for causing build bustages on TestBaseProfiler.cpp
CLOSED TREE Backed out changeset 781be7f64b1a (bug 1616298) Backed out changeset a3920eccb1ac (bug 1616298)
This commit is contained in:
Arthur Iakab
parent
854fd7a3b4
commit
a973454927
@ -38,9 +38,6 @@
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#ifndef leb128iterator_h
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#define leb128iterator_h
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#include "mozilla/Assertions.h"
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#include "mozilla/Likely.h"
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#include <climits>
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#include <cstdint>
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#include <limits>
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@ -145,63 +142,6 @@ T ReadULEB128(It& aIterator) {
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}
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}
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// constexpr ULEB128 reader class.
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// Mostly useful when dealing with non-trivial byte feeds.
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template <typename T>
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class ULEB128Reader {
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static_assert(!std::numeric_limits<T>::is_signed,
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"ULEB128Reader must handle an unsigned type");
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public:
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constexpr ULEB128Reader() = default;
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// Don't allow copy/assignment, it doesn't make sense for a stateful parser.
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constexpr ULEB128Reader(const ULEB128Reader&) = delete;
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constexpr ULEB128Reader& operator=(const ULEB128Reader&) = delete;
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// Feed a byte into the parser.
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// Returns true if this was the last byte.
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constexpr MOZ_MUST_USE bool FeedByteIsComplete(unsigned aByte) {
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MOZ_ASSERT(!IsComplete());
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// Extract the 7 bits of value, and shift them in place into the value.
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mValue |= static_cast<T>(aByte & 0x7fu) << mShift;
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// If the 8th bit is *not* set, this was the last byte.
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// Expecting small values, so it should be more likely that the bit is off.
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if (MOZ_LIKELY((aByte & 0x80u) == 0)) {
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mShift = mCompleteShift;
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return true;
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}
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// There are more bytes to read.
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// Next byte will contain more significant bits above the past 7.
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mShift += 7;
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// Safety check that we're not going to shift by >= than the type size,
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// which is Undefined Behavior in C++.
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MOZ_ASSERT(mShift < CHAR_BIT * sizeof(T));
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return false;
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}
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constexpr void Reset() {
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mValue = 0;
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mShift = 0;
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}
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constexpr MOZ_MUST_USE bool IsComplete() const {
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return mShift == mCompleteShift;
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}
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constexpr MOZ_MUST_USE T Value() const {
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MOZ_ASSERT(IsComplete());
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return mValue;
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}
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private:
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// Special value of `mShift` indicating that parsing is complete.
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constexpr static unsigned mCompleteShift = 0x10000u;
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T mValue = 0;
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unsigned mShift = 0;
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};
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} // namespace mozilla
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#endif // leb128iterator_h
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@ -5,43 +5,43 @@
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "BaseProfiler.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/BlocksRingBuffer.h"
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#include "mozilla/leb128iterator.h"
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#include "mozilla/ModuloBuffer.h"
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#include "mozilla/PowerOfTwo.h"
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#include "mozilla/Vector.h"
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#ifdef MOZ_BASE_PROFILER
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# include "BaseProfileJSONWriter.h"
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# include "BaseProfilerMarkerPayload.h"
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#endif // MOZ_BASE_PROFILER
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# include "mozilla/BlocksRingBuffer.h"
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# include "mozilla/leb128iterator.h"
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# include "mozilla/ModuloBuffer.h"
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# include "mozilla/PowerOfTwo.h"
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#if defined(_MSC_VER) || defined(__MINGW32__)
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# include <windows.h>
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# include <mmsystem.h>
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# include <process.h>
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#else
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# include <errno.h>
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# include <string.h>
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# include <time.h>
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# include <unistd.h>
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#endif
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# include "mozilla/Attributes.h"
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# include "mozilla/Vector.h"
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#include <algorithm>
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#include <atomic>
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#include <thread>
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#include <type_traits>
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# if defined(_MSC_VER)
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# include <windows.h>
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# include <mmsystem.h>
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# include <process.h>
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# else
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# include <time.h>
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# include <unistd.h>
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# endif
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# include <algorithm>
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# include <atomic>
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# include <thread>
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# include <type_traits>
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using namespace mozilla;
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MOZ_MAYBE_UNUSED static void SleepMilli(unsigned aMilliseconds) {
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#if defined(_MSC_VER) || defined(__MINGW32__)
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# if defined(_MSC_VER)
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Sleep(aMilliseconds);
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#else
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struct timespec ts = {/* .tv_sec */ aMilliseconds / 1000,
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/* ts.tv_nsec */ long(aMilliseconds % 1000) * 1000000};
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struct timespec tr = {0, 0};
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# else
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struct timespec ts;
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ts.tv_sec = aMilliseconds / 1000;
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ts.tv_nsec = long(aMilliseconds % 1000) * 1000000;
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struct timespec tr;
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while (nanosleep(&ts, &tr)) {
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if (errno == EINTR) {
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ts = tr;
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@ -50,7 +50,7 @@ MOZ_MAYBE_UNUSED static void SleepMilli(unsigned aMilliseconds) {
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exit(1);
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}
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}
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#endif
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# endif
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}
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void TestPowerOfTwoMask() {
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@ -245,7 +245,6 @@ void TestLEB128() {
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for (unsigned i = 0; i < test.mSize; ++i) {
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MOZ_RELEASE_ASSERT(buffer[i] == uint8_t(test.mBytes[i]));
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}
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// Move pointer (iterator) back to start of buffer.
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p = buffer;
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// And read the LEB128 we wrote above.
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@ -255,115 +254,11 @@ void TestLEB128() {
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MOZ_RELEASE_ASSERT(p == buffer + test.mSize);
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// And check the read value.
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MOZ_RELEASE_ASSERT(read == test.mValue);
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// Testing ULEB128 reader.
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ULEB128Reader<uint64_t> reader;
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MOZ_RELEASE_ASSERT(!reader.IsComplete());
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// Move pointer back to start of buffer.
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p = buffer;
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for (;;) {
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// Read a byte and feed it to the reader.
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if (reader.FeedByteIsComplete(*p++)) {
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break;
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}
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// Not complete yet, we shouldn't have reached the end pointer.
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MOZ_RELEASE_ASSERT(!reader.IsComplete());
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MOZ_RELEASE_ASSERT(p < buffer + test.mSize);
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}
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MOZ_RELEASE_ASSERT(reader.IsComplete());
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// Pointer should have advanced just past the expected LEB128 size.
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MOZ_RELEASE_ASSERT(p == buffer + test.mSize);
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// And check the read value.
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MOZ_RELEASE_ASSERT(reader.Value() == test.mValue);
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// And again after a Reset.
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reader.Reset();
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MOZ_RELEASE_ASSERT(!reader.IsComplete());
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p = buffer;
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for (;;) {
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if (reader.FeedByteIsComplete(*p++)) {
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break;
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}
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MOZ_RELEASE_ASSERT(!reader.IsComplete());
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MOZ_RELEASE_ASSERT(p < buffer + test.mSize);
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}
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MOZ_RELEASE_ASSERT(reader.IsComplete());
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MOZ_RELEASE_ASSERT(p == buffer + test.mSize);
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MOZ_RELEASE_ASSERT(reader.Value() == test.mValue);
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}
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printf("TestLEB128 done\n");
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}
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template <uint8_t byte, uint8_t... tail>
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constexpr bool TestConstexprULEB128Reader(ULEB128Reader<uint64_t>& aReader) {
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if (aReader.IsComplete()) {
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return false;
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}
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const bool isComplete = aReader.FeedByteIsComplete(byte);
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if (aReader.IsComplete() != isComplete) {
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return false;
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}
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if constexpr (sizeof...(tail) == 0) {
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return isComplete;
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} else {
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if (isComplete) {
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return false;
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}
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return TestConstexprULEB128Reader<tail...>(aReader);
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}
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}
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template <uint64_t expected, uint8_t... bytes>
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constexpr bool TestConstexprULEB128Reader() {
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ULEB128Reader<uint64_t> reader;
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if (!TestConstexprULEB128Reader<bytes...>(reader)) {
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return false;
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}
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if (!reader.IsComplete()) {
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return false;
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}
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if (reader.Value() != expected) {
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return false;
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}
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reader.Reset();
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if (!TestConstexprULEB128Reader<bytes...>(reader)) {
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return false;
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}
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if (!reader.IsComplete()) {
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return false;
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}
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if (reader.Value() != expected) {
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return false;
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}
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return true;
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}
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static_assert(TestConstexprULEB128Reader<0x0u, 0x0u>());
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static_assert(!TestConstexprULEB128Reader<0x0u, 0x0u, 0x0u>());
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static_assert(TestConstexprULEB128Reader<0x1u, 0x1u>());
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static_assert(TestConstexprULEB128Reader<0x7Fu, 0x7Fu>());
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static_assert(TestConstexprULEB128Reader<0x80u, 0x80u, 0x01u>());
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static_assert(!TestConstexprULEB128Reader<0x80u, 0x80u>());
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static_assert(!TestConstexprULEB128Reader<0x80u, 0x01u>());
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static_assert(TestConstexprULEB128Reader<0x81u, 0x81u, 0x01u>());
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static_assert(TestConstexprULEB128Reader<0xFFu, 0xFFu, 0x01u>());
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static_assert(TestConstexprULEB128Reader<0x100u, 0x80u, 0x02u>());
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static_assert(TestConstexprULEB128Reader<0xFFFFFFFFu, 0xFFu, 0xFFu, 0xFFu,
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0xFFu, 0x0Fu>());
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static_assert(
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!TestConstexprULEB128Reader<0xFFFFFFFFu, 0xFFu, 0xFFu, 0xFFu, 0xFFu>());
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static_assert(!TestConstexprULEB128Reader<0xFFFFFFFFu, 0xFFu, 0xFFu, 0xFFu,
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0xFFu, 0xFFu, 0x0Fu>());
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static_assert(
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TestConstexprULEB128Reader<0xFFFFFFFFFFFFFFFFu, 0xFFu, 0xFFu, 0xFFu, 0xFFu,
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0xFFu, 0xFFu, 0xFFu, 0xFFu, 0xFFu, 0x01u>());
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static_assert(
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!TestConstexprULEB128Reader<0xFFFFFFFFFFFFFFFFu, 0xFFu, 0xFFu, 0xFFu, 0xFFu,
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0xFFu, 0xFFu, 0xFFu, 0xFFu, 0xFFu>());
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static void TestModuloBuffer(ModuloBuffer<>& mb, uint32_t MBSize) {
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using MB = ModuloBuffer<>;
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@ -622,7 +517,7 @@ void TestModuloBuffer() {
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// Compare the two outputs.
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for (uint32_t i = 0; i < TRISize; ++i) {
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#ifdef TEST_MODULOBUFFER_FAILURE_DEBUG
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# ifdef TEST_MODULOBUFFER_FAILURE_DEBUG
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// Only used when debugging failures.
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if (output[i] != outputCheck[i]) {
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printf(
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@ -631,15 +526,15 @@ void TestModuloBuffer() {
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unsigned(aReadFrom), unsigned(aWriteTo), unsigned(aBytes),
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unsigned(i), input, output, outputCheck);
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}
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#endif
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# endif
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MOZ_RELEASE_ASSERT(output[i] == outputCheck[i]);
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}
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#ifdef TEST_MODULOBUFFER_HELPER
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# ifdef TEST_MODULOBUFFER_HELPER
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// Only used when adding more tests.
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printf("*** from=%u to=%u bytes=%u output: %s\n", unsigned(aReadFrom),
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unsigned(aWriteTo), unsigned(aBytes), output);
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#endif
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# endif
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return std::string(reinterpret_cast<const char*>(output));
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};
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@ -688,14 +583,14 @@ void TestBlocksRingBufferAPI() {
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BlocksRingBuffer rb(BlocksRingBuffer::ThreadSafety::WithMutex,
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&buffer[MBSize], MakePowerOfTwo32<MBSize>());
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#define VERIFY_START_END_PUSHED_CLEARED(aStart, aEnd, aPushed, aCleared) \
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{ \
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BlocksRingBuffer::State state = rb.GetState(); \
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MOZ_RELEASE_ASSERT(ExtractBlockIndex(state.mRangeStart) == (aStart)); \
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MOZ_RELEASE_ASSERT(ExtractBlockIndex(state.mRangeEnd) == (aEnd)); \
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MOZ_RELEASE_ASSERT(state.mPushedBlockCount == (aPushed)); \
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MOZ_RELEASE_ASSERT(state.mClearedBlockCount == (aCleared)); \
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}
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# define VERIFY_START_END_PUSHED_CLEARED(aStart, aEnd, aPushed, aCleared) \
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{ \
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BlocksRingBuffer::State state = rb.GetState(); \
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MOZ_RELEASE_ASSERT(ExtractBlockIndex(state.mRangeStart) == (aStart)); \
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MOZ_RELEASE_ASSERT(ExtractBlockIndex(state.mRangeEnd) == (aEnd)); \
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MOZ_RELEASE_ASSERT(state.mPushedBlockCount == (aPushed)); \
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MOZ_RELEASE_ASSERT(state.mClearedBlockCount == (aCleared)); \
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}
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// All entries will contain one 32-bit number. The resulting blocks will
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// have the following structure:
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@ -1354,7 +1249,7 @@ void TestBlocksRingBufferSerialization() {
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&buffer[MBSize], MakePowerOfTwo32<MBSize>());
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// Will expect literal string to always have the same address.
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#define THE_ANSWER "The answer is "
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# define THE_ANSWER "The answer is "
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const char* theAnswer = THE_ANSWER;
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rb.PutObjects('0', WrapBlocksRingBufferLiteralCStringPointer(THE_ANSWER), 42,
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@ -1564,19 +1459,6 @@ void TestBlocksRingBufferSerialization() {
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printf("TestBlocksRingBufferSerialization done\n");
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}
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void TestProfilerDependencies() {
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TestPowerOfTwoMask();
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TestPowerOfTwo();
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TestLEB128();
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TestModuloBuffer();
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TestBlocksRingBufferAPI();
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TestBlocksRingBufferUnderlyingBufferChanges();
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TestBlocksRingBufferThreading();
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TestBlocksRingBufferSerialization();
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}
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#ifdef MOZ_BASE_PROFILER
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class BaseTestMarkerPayload : public baseprofiler::ProfilerMarkerPayload {
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public:
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explicit BaseTestMarkerPayload(int aData) : mData(aData) {}
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@ -1718,6 +1600,15 @@ void TestProfiler() {
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baseprofiler::profiler_current_thread_id());
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// ::SleepMilli(10000);
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// Test dependencies.
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TestPowerOfTwoMask();
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TestPowerOfTwo();
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TestLEB128();
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TestModuloBuffer();
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TestBlocksRingBufferAPI();
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TestBlocksRingBufferUnderlyingBufferChanges();
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TestBlocksRingBufferThreading();
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TestBlocksRingBufferSerialization();
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TestProfilerMarkerSerialization();
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{
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@ -1926,9 +1817,6 @@ int wmain()
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int main()
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#endif // defined(XP_WIN)
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{
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// Always run tests that don't involve the profiler directly.
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TestProfilerDependencies();
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// Note that there are two `TestProfiler` functions above, depending on
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// whether MOZ_BASE_PROFILER is #defined.
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TestProfiler();
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