diff options
author | Tor Egge <Tor.Egge@broadpark.no> | 2020-02-13 12:51:21 +0100 |
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committer | Tor Egge <Tor.Egge@broadpark.no> | 2020-02-13 12:54:59 +0100 |
commit | 9ffd806284f58291a733ae1abd61d71ed15bd3fc (patch) | |
tree | 7e989f94b111b4878facebf020e3c570032374f3 | |
parent | 1e35637ebf9bf87fb12a7e3ab009988b8fe0bf0d (diff) |
Use simple standard pseudorandom generator.
-rw-r--r-- | searchlib/src/apps/docstore/benchmarkdatastore.cpp | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/searchlib/src/apps/docstore/benchmarkdatastore.cpp b/searchlib/src/apps/docstore/benchmarkdatastore.cpp index 620a139d451..4f8a4ad7345 100644 --- a/searchlib/src/apps/docstore/benchmarkdatastore.cpp +++ b/searchlib/src/apps/docstore/benchmarkdatastore.cpp @@ -9,6 +9,7 @@ #include <vespa/vespalib/data/databuffer.h> #include <vespa/fastos/app.h> #include <unistd.h> +#include <random> #include <vespa/log/log.h> LOG_SETUP("documentstore.benchmark"); @@ -65,17 +66,13 @@ BenchmarkDataStoreApp::Main() void BenchmarkDataStoreApp::read(size_t numReads, size_t perChunk, const IDataStore * dataStore) { vespalib::DataBuffer buf; - struct random_data rstate; - char state[8]; - memset(state, 0, sizeof(state)); - memset(&rstate, 0, sizeof(rstate)); + std::minstd_rand rng; const size_t docIdLimit(dataStore->getDocIdLimit()); assert(docIdLimit > 0); - initstate_r(getpid(), state, sizeof(state), &rstate); - assert(srandom_r(getpid(), &rstate) == 0); + rng.seed(getpid()); int32_t rnd(0); for ( size_t i(0); i < numReads; i++) { - random_r(&rstate, &rnd); + rnd = rng(); uint32_t lid(rnd%docIdLimit); for (uint32_t j(lid); j < std::min(docIdLimit, lid+perChunk); j++) { dataStore->read(j, buf); |