Move datastore and btree code from searchlib to vespalib

Namespace is still `search` and not `vespalib` due to the massive
amount of code that would need to be modified for such a change.

Other changes:
- Move `BufferWriter` from searchlib to vespalib
- Move assertion and rand48 utilities from staging_vespalib to vespalib
- Move gtest utility code from staging_vespalib to vespalib

10 files changed, 0 insertions, 253 deletions

diff --git a/staging_vespalib/CMakeLists.txt b/staging_vespalib/CMakeLists.txt
index b95b4fda01f..095caf17a56 100644
--- a/staging_vespalib/CMakeLists.txt
+++ b/staging_vespalib/CMakeLists.txt
@@ -9,7 +9,6 @@ vespa_define_module(
 
     TESTS
     src/tests/array
-    src/tests/assert
     src/tests/benchmark
     src/tests/bits
     src/tests/clock
diff --git a/staging_vespalib/src/tests/assert/.gitignore b/staging_vespalib/src/tests/assert/.gitignore
deleted file mode 100644
index d0e23fcd846..00000000000
--- a/staging_vespalib/src/tests/assert/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-staging_vespalib_asserter_app
diff --git a/staging_vespalib/src/tests/assert/CMakeLists.txt b/staging_vespalib/src/tests/assert/CMakeLists.txt
deleted file mode 100644
index 7403a488645..00000000000
--- a/staging_vespalib/src/tests/assert/CMakeLists.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-# Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-
-vespa_add_executable(staging_vespalib_assert_test_app TEST
-    SOURCES
-    assert_test.cpp
-    DEPENDS
-    staging_vespalib
-)
-vespa_add_test(NAME staging_vespalib_assert_test_app COMMAND staging_vespalib_assert_test_app)
-
-vespa_add_executable(staging_vespalib_asserter_app TEST
-    SOURCES
-    asserter.cpp
-    DEPENDS
-    staging_vespalib
-)
diff --git a/staging_vespalib/src/tests/assert/assert_test.cpp b/staging_vespalib/src/tests/assert/assert_test.cpp
deleted file mode 100644
index 454c0957974..00000000000
--- a/staging_vespalib/src/tests/assert/assert_test.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-#include <vespa/vespalib/testkit/test_kit.h>
-#include <vespa/vespalib/util/slaveproc.h>
-#include <vespa/vespalib/util/stringfmt.h>
-#include <vespa/vespalib/util/assert.h>
-#include <vespa/vespalib/io/fileutil.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <vespa/defaults.h>
-
-using namespace vespalib;
-
-TEST("that it borks the first time.") {
-    std::string assertName;
-    const char * assertDir = "var/db/vespa/tmp";
-    vespalib::rmdir("var", true);
-    ASSERT_TRUE(vespalib::mkdir(assertDir, true));
-    {
-        SlaveProc proc("ulimit -c 0 && exec env VESPA_HOME=./ ./staging_vespalib_asserter_app myassert 10000");
-        proc.wait();
-        ASSERT_EQUAL(proc.getExitCode() & 0x7f, 6);
-    }
-    {
-        SlaveProc proc("ulimit -c 0 && exec env VESPA_HOME=./ ./staging_vespalib_asserter_app myassert 10000");
-        proc.readLine(assertName);
-        proc.wait();
-        ASSERT_EQUAL(proc.getExitCode() & 0x7f, 0);
-    }
-    ASSERT_EQUAL(0, unlink(assertName.c_str()));
-    {
-        SlaveProc proc("ulimit -c 0 && exec env VESPA_HOME=./ ./staging_vespalib_asserter_app myassert 10000");
-        proc.wait();
-        ASSERT_EQUAL(proc.getExitCode() & 0x7f, 6);
-    }
-    ASSERT_EQUAL(0, unlink(assertName.c_str()));
-    ASSERT_TRUE(vespalib::rmdir("var", true));
-}
-
-TEST_MAIN_WITH_PROCESS_PROXY() { TEST_RUN_ALL(); }
diff --git a/staging_vespalib/src/tests/assert/asserter.cpp b/staging_vespalib/src/tests/assert/asserter.cpp
deleted file mode 100644
index 640464889c0..00000000000
--- a/staging_vespalib/src/tests/assert/asserter.cpp
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-#include <vespa/vespalib/util/assert.h>
-#include <cassert>
-#include <cstdlib>
-#include <fstream>
-#include <string>
-
-int main(int argc, char *argv[]) {
-    assert(argc == 3);
-    const char * assertKey = argv[1];
-    size_t assertCount = strtoul(argv[2], nullptr, 0);
-    for (size_t i(0); i < assertCount; i++) {
-        ASSERT_ONCE_OR_LOG(true, assertKey, 100);
-        ASSERT_ONCE_OR_LOG(false, assertKey, 100);
-    }
-    std::string filename = vespalib::assert::getAssertLogFileName(assertKey);
-    std::ifstream is(filename.c_str());
-    assert(is);
-    std::string line;
-    std::getline(is, line);
-    printf("%s\n", filename.c_str());
-    assert(line.find(assertKey) != std::string::npos);
-    assert(assertCount == vespalib::assert::getNumAsserts(assertKey));
-    return 0;
-}
diff --git a/staging_vespalib/src/vespa/vespalib/gtest/gtest.h b/staging_vespalib/src/vespa/vespalib/gtest/gtest.h
deleted file mode 100644
index 67d3d438a52..00000000000
--- a/staging_vespalib/src/vespa/vespalib/gtest/gtest.h
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright 2019 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-
-#include <gtest/gtest.h>
-
-/**
- * Macro for creating a main function that runs all gtests.
- */
-#define GTEST_MAIN_RUN_ALL_TESTS()          \
-int                                         \
-main(int argc, char* argv[])                \
-{                                           \
-    ::testing::InitGoogleTest(&argc, argv); \
-    return RUN_ALL_TESTS();                 \
-}
diff --git a/staging_vespalib/src/vespa/vespalib/util/CMakeLists.txt b/staging_vespalib/src/vespa/vespalib/util/CMakeLists.txt
index c104c047cd0..20d47c90453 100644
--- a/staging_vespalib/src/vespa/vespalib/util/CMakeLists.txt
+++ b/staging_vespalib/src/vespa/vespalib/util/CMakeLists.txt
@@ -1,7 +1,6 @@
 # Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 vespa_add_library(staging_vespalib_vespalib_util OBJECT
     SOURCES
-    assert.cpp
     bits.cpp
     clock.cpp
     crc.cpp
diff --git a/staging_vespalib/src/vespa/vespalib/util/assert.cpp b/staging_vespalib/src/vespa/vespalib/util/assert.cpp
deleted file mode 100644
index 0482d873f7f..00000000000
--- a/staging_vespalib/src/vespa/vespalib/util/assert.cpp
+++ /dev/null
@@ -1,77 +0,0 @@
-// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-
-#include "assert.h"
-#include <vespa/defaults.h>
-#include <vespa/vespalib/util/backtrace.h>
-#include <vespa/vespalib/util/stringfmt.h>
-#include <vespa/vespalib/component/vtag.h>
-#include <fstream>
-#include <map>
-#include <mutex>
-#include <chrono>
-#include <iomanip>
-
-#include <vespa/log/log.h>
-LOG_SETUP(".vespa.assert");
-
-namespace vespalib::assert {
-
-namespace {
-
-std::mutex _G_lock;
-std::map<std::string, size_t> _G_assertMap;
-
-}
-
-size_t
-getNumAsserts(const char *key)
-{
-    std::lock_guard guard(_G_lock);
-    return _G_assertMap[key];
-}
-
-vespalib::string
-getAssertLogFileName(const char *key)
-{
-    vespalib::string relative = make_string("var/db/vespa/tmp/%s.%s.assert", key, Vtag::currentVersion.toString().c_str());
-    return vespa::Defaults::underVespaHome(relative.c_str());
-}
-
-void
-assertOnceOrLog(const char *expr, const char *key, size_t freq)
-{
-    size_t count(0);
-    {
-        std::lock_guard guard(_G_lock);
-        count = _G_assertMap[key]++;
-    }
-    if (count) {
-        if ((count % freq) == 0) {
-            LOG(error, "assert(%s) named '%s' has failed %zu times. Stacktrace = %s",
-                expr, key, count+1, vespalib::getStackTrace(0).c_str());
-        }
-    } else {
-        std::string rememberAssert = getAssertLogFileName(key);
-        std::ifstream prevAssertFile(rememberAssert.c_str());
-        if (prevAssertFile) {
-            if ((count % freq) == 0) {
-                LOG(error, "assert(%s) named '%s' has failed %zu times. Stacktrace = %s",
-                    expr, key, count + 1, vespalib::getStackTrace(0).c_str());
-            }
-        } else {
-            {
-                LOG(error, "assert(%s) named '%s' failed first time. Stacktrace = %s",
-                    expr, key, vespalib::getStackTrace(0).c_str());
-                std::ofstream assertStream(rememberAssert.c_str());
-                std::chrono::time_point now = std::chrono::system_clock::now();
-                std::time_t now_c = std::chrono::system_clock::to_time_t(now);
-                assertStream << std::put_time(std::gmtime(&now_c), "%F %T") << " assert(" << expr
-                             << ") named " << key << " failed" << std::endl;
-                assertStream.close();
-            }
-            abort();
-        }
-    }
-}
-
-}
diff --git a/staging_vespalib/src/vespa/vespalib/util/assert.h b/staging_vespalib/src/vespa/vespalib/util/assert.h
deleted file mode 100644
index 698fa6774c1..00000000000
--- a/staging_vespalib/src/vespa/vespalib/util/assert.h
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-
-#pragma once
-
-#include <vespa/vespalib/stllike/string.h>
-
-namespace vespalib::assert {
-
-/**
- * How many times has asserts against this key failed.
- * @param key
- * @return
- */
-size_t getNumAsserts(const char *key);
-
-/**
- * Get the filename that will be used for remembering asserts.
- * @param key
- * @return
- */
-vespalib::string getAssertLogFileName(const char *key);
-
-/**
- * If there is no record on file that this assert has failed, it will be recorded and aborted.
- * However if there is a record of it, it will merely be logged the first and then every #freq time.
- * @param expr that failed the assert
- * @param key unique name of assert
- * @param logFreq how often will a failing assert be logged.
- */
-void assertOnceOrLog(const char *expr, const char *key, size_t logFreq);
-
-}
-
-#define ASSERT_ONCE_OR_LOG(expr, key, freq) { \
-    if ( ! (expr) ) {                  \
-        vespalib::assert::assertOnceOrLog(#expr, key, freq); \
-    }                                  \
-}
diff --git a/staging_vespalib/src/vespa/vespalib/util/rand48.h b/staging_vespalib/src/vespa/vespalib/util/rand48.h
deleted file mode 100644
index 441f8e6e10f..00000000000
--- a/staging_vespalib/src/vespa/vespalib/util/rand48.h
+++ /dev/null
@@ -1,41 +0,0 @@
-// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-
-#pragma once
-
-
-namespace search {
-
-/*
- * Simple random generator based on lrand48() spec.
- */
-class Rand48
-{
-private:
-    uint64_t _state;
-public:
-    void
-    srand48(long seed)
-    {
-        _state = ((static_cast<uint64_t>(seed & 0xffffffffu)) << 16) + 0x330e;
-    }
-
-    Rand48(void)
-        : _state(0)
-    {
-        srand48(0x1234abcd);
-    };
-    void iterate(void) {
-        _state = (UINT64_C(0x5DEECE66D) * _state + 0xb) &
-                 UINT64_C(0xFFFFFFFFFFFF);
-    }
-    /*
-     * Return value from 0 to 2^31 - 1
-     */
-    long lrand48(void) {
-        iterate();
-        return static_cast<long>(_state >> 17);
-    }
-};
-
-} // namespace search
-