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3 Commits
25cc427ec5
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b0085df5ad
Author | SHA1 | Date | |
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b0085df5ad | |||
76a7e17b29 | |||
5cf43d1bfa |
@@ -39,6 +39,8 @@ limitations under the License.
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#include <memcheck.h>
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using namespace weaselab;
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// Use assert for checking potentially complex properties during tests.
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// Use assume to hint simple properties to the optimizer.
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@@ -2,6 +2,8 @@
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#include "ConflictSet.h"
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using namespace weaselab;
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#include <bit>
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#include <cassert>
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#include <compare>
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36
README.md
36
README.md
@@ -33,25 +33,25 @@ Performance counters:
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## Radix tree (this implementation)
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```
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New conflict set: 1.285 sec
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0.973 Mtransactions/sec
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3.892 Mkeys/sec
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Detect only: 1.196 sec
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1.045 Mtransactions/sec
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4.180 Mkeys/sec
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Skiplist only: 0.539 sec
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2.320 Mtransactions/sec
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9.281 Mkeys/sec
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New conflict set: 1.660 sec
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0.753 Mtransactions/sec
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3.012 Mkeys/sec
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Detect only: 1.524 sec
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0.820 Mtransactions/sec
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3.280 Mkeys/sec
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Skiplist only: 0.844 sec
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1.481 Mtransactions/sec
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5.926 Mkeys/sec
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Performance counters:
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Build: 0.0377
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Add: 0.0493
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Detect: 1.2
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D.Sort: 0.41
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D.Combine: 0.0135
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D.CheckRead: 0.219
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D.CheckIntraBatch: 0.00654
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D.MergeWrite: 0.319
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D.RemoveBefore: 0.224
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Build: 0.0699
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Add: 0.0628
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Detect: 1.52
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D.Sort: 0.435
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D.Combine: 0.0183
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D.CheckRead: 0.37
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D.CheckIntraBatch: 0.00801
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D.MergeWrite: 0.473
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D.RemoveBefore: 0.215
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```
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# Our benchmark
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@@ -8,6 +8,8 @@
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#include <unistd.h>
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#include <vector>
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using namespace weaselab;
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double now() {
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return std::chrono::duration_cast<std::chrono::nanoseconds>(
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std::chrono::steady_clock::now().time_since_epoch())
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@@ -2,6 +2,8 @@
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#include <cassert>
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using namespace weaselab;
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int main(void) {
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ConflictSet cs(0);
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ConflictSet::WriteRange w;
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107
fdb-patch.txt
107
fdb-patch.txt
@@ -1,32 +1,19 @@
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giff --git a/fdbserver/CMakeLists.txt b/fdbserver/CMakeLists.txt
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index 3f353c2ef..cd0834761 100644
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diff --git a/fdbserver/CMakeLists.txt b/fdbserver/CMakeLists.txt
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index 3f353c2ef..074a18628 100644
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--- a/fdbserver/CMakeLists.txt
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+++ b/fdbserver/CMakeLists.txt
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@@ -22,6 +22,9 @@ file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/workloads)
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add_flow_target(EXECUTABLE NAME fdbserver SRCS ${FDBSERVER_SRCS})
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+find_package(ConflictSet)
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+target_link_libraries(fdbserver PRIVATE conflict_set_static)
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+find_package(conflict-set)
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+target_link_libraries(fdbserver PRIVATE conflict-set-static)
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+
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if (WITH_SWIFT)
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# Setup the Swift sources in FDBServer.
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include(FindSwiftLibs)
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diff --git a/fdbserver/Resolver.actor.cpp b/fdbserver/Resolver.actor.cpp
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index bf4118f5f..d3b4eaad8 100644
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--- a/fdbserver/Resolver.actor.cpp
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+++ b/fdbserver/Resolver.actor.cpp
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@@ -132,7 +132,7 @@ struct Resolver : ReferenceCounted<Resolver> {
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AsyncVar<int64_t> totalStateBytes;
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AsyncTrigger checkNeededVersion;
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std::map<NetworkAddress, ProxyRequestsInfo> proxyInfoMap;
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- ConflictSet* conflictSet;
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+ ConflictSet2* conflictSet;
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TransientStorageMetricSample iopsSample;
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// Use LogSystem as backend for txnStateStore. However, the real commit
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diff --git a/fdbserver/SkipList.cpp b/fdbserver/SkipList.cpp
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index b48d32c6b..da106b5d2 100644
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index b48d32c6b..da99e03aa 100644
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--- a/fdbserver/SkipList.cpp
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+++ b/fdbserver/SkipList.cpp
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@@ -25,6 +25,7 @@
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@@ -46,50 +33,35 @@ index b48d32c6b..da106b5d2 100644
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static std::vector<PerfDoubleCounter*> skc;
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static thread_local uint32_t g_seed = 0;
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@@ -782,26 +785,34 @@ private:
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}
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@@ -783,10 +786,14 @@ private:
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};
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-struct ConflictSet {
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struct ConflictSet {
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- ConflictSet() : removalKey(makeString(0)), oldestVersion(0) {}
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- ~ConflictSet() {}
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+struct ConflictSet2 {
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+ ConflictSet2() : versionHistory(0), removalKey(makeString(0)), oldestVersion(0) {}
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+ ~ConflictSet2() {}
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+ ConflictSet() : versionHistory(0), removalKey(makeString(0)), oldestVersion(0) {}
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~ConflictSet() {}
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+#if USE_RADIX_TREE
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+ ConflictSet versionHistory;
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+ weaselab::ConflictSet versionHistory;
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+#else
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SkipList versionHistory;
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+#endif
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Key removalKey;
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Version oldestVersion;
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};
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-ConflictSet* newConflictSet() {
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- return new ConflictSet;
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+ConflictSet2* newConflictSet() {
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+ return new ConflictSet2;
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@@ -795,7 +802,11 @@ ConflictSet* newConflictSet() {
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return new ConflictSet;
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}
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-void clearConflictSet(ConflictSet* cs, Version v) {
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void clearConflictSet(ConflictSet* cs, Version v) {
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- SkipList(v).swap(cs->versionHistory);
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+void clearConflictSet(ConflictSet2* cs, Version v) {
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+#if USE_RADIX_TREE
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+ cs->versionHistory = ConflictSet{ 0 };
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+ cs->versionHistory = weaselab::ConflictSet{ 0 };
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+#else
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+ SkipList().swap(cs->versionHistory);
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+#endif
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}
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-void destroyConflictSet(ConflictSet* cs) {
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+void destroyConflictSet(ConflictSet2* cs) {
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void destroyConflictSet(ConflictSet* cs) {
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delete cs;
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}
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-ConflictBatch::ConflictBatch(ConflictSet* cs,
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+ConflictBatch::ConflictBatch(ConflictSet2* cs,
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std::map<int, VectorRef<int>>* conflictingKeyRangeMap,
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Arena* resolveBatchReplyArena)
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: cs(cs), transactionCount(0), conflictingKeyRangeMap(conflictingKeyRangeMap),
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@@ -971,11 +982,15 @@ void ConflictBatch::detectConflicts(Version now,
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t = timer();
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if (newOldestVersion > cs->oldestVersion) {
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@@ -112,7 +84,7 @@ index b48d32c6b..da106b5d2 100644
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+#if USE_RADIX_TREE
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+ Arena arena;
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+ auto* reads = new (arena) ConflictSet::ReadRange[combinedReadConflictRanges.size()];
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+ auto* reads = new (arena) weaselab::ConflictSet::ReadRange[combinedReadConflictRanges.size()];
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+
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+ for (int i = 0; i < combinedReadConflictRanges.size(); ++i) {
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+ auto& read = reads[i];
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@@ -122,11 +94,11 @@ index b48d32c6b..da106b5d2 100644
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+ read.end.p = combinedReadConflictRanges[i].end.begin();
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+ read.end.len = combinedReadConflictRanges[i].end.size();
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+ }
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+ auto* results = new (arena) ConflictSet::Result[combinedReadConflictRanges.size()];
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+ auto* results = new (arena) weaselab::ConflictSet::Result[combinedReadConflictRanges.size()];
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+ cs->versionHistory.check(reads, results, combinedReadConflictRanges.size());
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+
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+ for (int i = 0; i < combinedReadConflictRanges.size(); ++i) {
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+ if (results[i] == ConflictSet::Conflict) {
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+ if (results[i] == weaselab::ConflictSet::Conflict) {
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+ transactionConflictStatus[combinedReadConflictRanges[i].transaction] = true;
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+ if (combinedReadConflictRanges[i].conflictingKeyRange != nullptr) {
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+ combinedReadConflictRanges[i].conflictingKeyRange->push_back(*combinedReadConflictRanges[i].cKRArena,
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@@ -147,7 +119,7 @@ index b48d32c6b..da106b5d2 100644
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+#if USE_RADIX_TREE
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+ Arena arena;
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+ auto* writes = new (arena) ConflictSet::WriteRange[combinedWriteConflictRanges.size()];
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+ auto* writes = new (arena) weaselab::ConflictSet::WriteRange[combinedWriteConflictRanges.size()];
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+
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+ for (int i = 0; i < combinedWriteConflictRanges.size(); ++i) {
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+ auto& write = writes[i];
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@@ -164,15 +136,6 @@ index b48d32c6b..da106b5d2 100644
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}
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void ConflictBatch::combineWriteConflictRanges() {
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@@ -1115,7 +1171,7 @@ void skipListTest() {
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double start;
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- ConflictSet* cs = newConflictSet();
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+ ConflictSet2* cs = newConflictSet();
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Arena testDataArena;
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VectorRef<VectorRef<KeyRangeRef>> testData;
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@@ -1197,6 +1253,4 @@ void skipListTest() {
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for (const auto& counter : skc) {
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printf("%20s: %s\n", counter->getMetric().name().c_str(), counter->getMetric().formatted().c_str());
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@@ -180,35 +143,3 @@ index b48d32c6b..da106b5d2 100644
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-
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- printf("%d entries in version history\n", cs->versionHistory.count());
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}
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diff --git a/fdbserver/include/fdbserver/ConflictSet.h b/fdbserver/include/fdbserver/ConflictSet.h
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index 90ed2c406..b7e31217c 100644
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--- a/fdbserver/include/fdbserver/ConflictSet.h
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+++ b/fdbserver/include/fdbserver/ConflictSet.h
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@@ -28,13 +28,13 @@
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#include "fdbclient/CommitTransaction.h"
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#include "fdbserver/ResolverBug.h"
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-struct ConflictSet;
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-ConflictSet* newConflictSet();
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-void clearConflictSet(ConflictSet*, Version);
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-void destroyConflictSet(ConflictSet*);
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+struct ConflictSet2;
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+ConflictSet2* newConflictSet();
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+void clearConflictSet(ConflictSet2*, Version);
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+void destroyConflictSet(ConflictSet2*);
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struct ConflictBatch {
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- explicit ConflictBatch(ConflictSet*,
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+ explicit ConflictBatch(ConflictSet2*,
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std::map<int, VectorRef<int>>* conflictingKeyRangeMap = nullptr,
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Arena* resolveBatchReplyArena = nullptr);
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~ConflictBatch();
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@@ -54,7 +54,7 @@ struct ConflictBatch {
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void GetTooOldTransactions(std::vector<int>& tooOldTransactions);
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private:
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- ConflictSet* cs;
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+ ConflictSet2* cs;
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Standalone<VectorRef<struct TransactionInfo*>> transactionInfo;
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std::vector<struct KeyInfo> points;
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int transactionCount;
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@@ -19,6 +19,7 @@ limitations under the License.
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#include <stdint.h>
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#ifdef __cplusplus
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namespace weaselab {
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/** A data structure for optimistic concurrency control on ranges of
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* bitwise-lexicographically-ordered keys.
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*
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@@ -100,6 +101,7 @@ struct __attribute__((__visibility__("default"))) ConflictSet {
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private:
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Impl *impl;
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};
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} /* namespace weaselab */
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#else
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22
symbols.txt
22
symbols.txt
@@ -4,14 +4,14 @@ ConflictSet_create
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ConflictSet_destroy
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ConflictSet_getBytes
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ConflictSet_setOldestVersion
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_ZN11ConflictSet16setOldestVersionEl
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_ZN11ConflictSet9addWritesEPKNS_10WriteRangeEil
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_ZN11ConflictSetaSEOS_
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_ZN11ConflictSetC1El
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_ZN11ConflictSetC1EOS_
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_ZN11ConflictSetC2El
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_ZN11ConflictSetC2EOS_
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_ZN11ConflictSetD1Ev
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_ZN11ConflictSetD2Ev
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_ZNK11ConflictSet5checkEPKNS_9ReadRangeEPNS_6ResultEi
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_ZNK11ConflictSet8getBytesEv
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_ZN8weaselab11ConflictSet16setOldestVersionEl
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_ZN8weaselab11ConflictSet9addWritesEPKNS0_10WriteRangeEil
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_ZN8weaselab11ConflictSetaSEOS0_
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_ZN8weaselab11ConflictSetC1El
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_ZN8weaselab11ConflictSetC1EOS0_
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_ZN8weaselab11ConflictSetC2El
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_ZN8weaselab11ConflictSetC2EOS0_
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_ZN8weaselab11ConflictSetD1Ev
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_ZN8weaselab11ConflictSetD2Ev
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_ZNK8weaselab11ConflictSet5checkEPKNS0_9ReadRangeEPNS0_6ResultEi
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_ZNK8weaselab11ConflictSet8getBytesEv
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Reference in New Issue
Block a user