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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "components/history/core/browser/history_database.h" | 5 #include "components/history/core/browser/history_database.h" |
| 6 | 6 |
| 7 #include <algorithm> | 7 #include <algorithm> |
| 8 #include <set> | 8 #include <set> |
| 9 #include <string> | 9 #include <string> |
| 10 #include <utility> | 10 #include <utility> |
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| 202 | 202 |
| 203 // Collect a map from host to visit count. | 203 // Collect a map from host to visit count. |
| 204 base::hash_map<std::string, int> host_count; | 204 base::hash_map<std::string, int> host_count; |
| 205 while (url_sql.Step()) { | 205 while (url_sql.Step()) { |
| 206 GURL url(url_sql.ColumnString(0)); | 206 GURL url(url_sql.ColumnString(0)); |
| 207 if (!(url.is_valid() && (url.SchemeIsHTTPOrHTTPS() || url.SchemeIs("ftp")))) | 207 if (!(url.is_valid() && (url.SchemeIsHTTPOrHTTPS() || url.SchemeIs("ftp")))) |
| 208 continue; | 208 continue; |
| 209 | 209 |
| 210 int64 visit_count = url_sql.ColumnInt64(1); | 210 int64 visit_count = url_sql.ColumnInt64(1); |
| 211 std::string host = url.host(); | 211 std::string host = url.host(); |
| 212 if (StartsWithASCII(host, "www.", true)) | 212 if (base::StartsWithASCII(host, "www.", true)) |
| 213 host.assign(host, 4, std::string::npos); | 213 host.assign(host, 4, std::string::npos); |
| 214 host_count[host] += visit_count; | 214 host_count[host] += visit_count; |
| 215 | 215 |
| 216 // kMaxHostsInMemory is well above typical values for | 216 // kMaxHostsInMemory is well above typical values for |
| 217 // History.MonthlyHostCount, but here to guard against unbounded memory | 217 // History.MonthlyHostCount, but here to guard against unbounded memory |
| 218 // growth in the event of an atypical history. | 218 // growth in the event of an atypical history. |
| 219 if (host_count.size() >= kMaxHostsInMemory) | 219 if (host_count.size() >= kMaxHostsInMemory) |
| 220 break; | 220 break; |
| 221 } | 221 } |
| 222 | 222 |
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| 510 "SET visit_time = visit_time + 11644473600000000 " | 510 "SET visit_time = visit_time + 11644473600000000 " |
| 511 "WHERE id IN (SELECT id FROM visits WHERE visit_time > 0);")); | 511 "WHERE id IN (SELECT id FROM visits WHERE visit_time > 0);")); |
| 512 ignore_result(db_.Execute( | 512 ignore_result(db_.Execute( |
| 513 "UPDATE segment_usage " | 513 "UPDATE segment_usage " |
| 514 "SET time_slot = time_slot + 11644473600000000 " | 514 "SET time_slot = time_slot + 11644473600000000 " |
| 515 "WHERE id IN (SELECT id FROM segment_usage WHERE time_slot > 0);")); | 515 "WHERE id IN (SELECT id FROM segment_usage WHERE time_slot > 0);")); |
| 516 } | 516 } |
| 517 #endif | 517 #endif |
| 518 | 518 |
| 519 } // namespace history | 519 } // namespace history |
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