[sqlite] Remove obsolete reference version 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/test/tt3_checkpoint.c

Index: third_party/sqlite/sqlite-src-3080704/test/tt3_checkpoint.c
diff --git a/third_party/sqlite/sqlite-src-3080704/test/tt3_checkpoint.c b/third_party/sqlite/sqlite-src-3080704/test/tt3_checkpoint.c
deleted file mode 100644
index 3c28f0d3a50ac30241922592b577d5f061b0d18f..0000000000000000000000000000000000000000
--- a/third_party/sqlite/sqlite-src-3080704/test/tt3_checkpoint.c
+++ /dev/null
@@ -1,150 +0,0 @@
-/*
-** 2001 September 15
-**
-** The author disclaims copyright to this source code.  In place of
-** a legal notice, here is a blessing:
-**
-**    May you do good and not evil.
-**    May you find forgiveness for yourself and forgive others.
-**    May you share freely, never taking more than you give.
-**
-*************************************************************************
-** This file is part of the test program "threadtest3". Despite being a C
-** file it is not compiled separately, but included by threadtest3.c using
-** the #include directive normally used with header files.
-**
-** This file contains the implementation of test cases:
-**
-**     checkpoint_starvation_1
-**     checkpoint_starvation_2
-*/
-
-/*
-** Both test cases involve 1 writer/checkpointer thread and N reader threads.
-** 
-** Each reader thread performs a series of read transactions, one after 
-** another. Each read transaction lasts for 100 ms.
-**
-** The writer writes transactions as fast as possible. It uses a callback
-** registered with sqlite3_wal_hook() to try to keep the WAL-size limited to 
-** around 50 pages.
-**
-** In test case checkpoint_starvation_1, the auto-checkpoint uses 
-** SQLITE_CHECKPOINT_PASSIVE. In checkpoint_starvation_2, it uses RESTART.
-** The expectation is that in the first case the WAL file will grow very 
-** large, and in the second will be limited to the 50 pages or thereabouts.
-** However, the overall transaction throughput will be lower for 
-** checkpoint_starvation_2, as every checkpoint will block for up to 200 ms
-** waiting for readers to clear.
-*/
-
-/* Frame limit used by the WAL hook for these tests. */
-#define CHECKPOINT_STARVATION_FRAMELIMIT 50
-
-/* Duration in ms of each read transaction */
-#define CHECKPOINT_STARVATION_READMS    100
-
-struct CheckpointStarvationCtx {
-  int eMode;
-  int nMaxFrame;
-};
-typedef struct CheckpointStarvationCtx CheckpointStarvationCtx;
-
-static int checkpoint_starvation_walhook(
-  void *pCtx, 
-  sqlite3 *db, 
-  const char *zDb, 
-  int nFrame
-){
-  CheckpointStarvationCtx *p = (CheckpointStarvationCtx *)pCtx;
-  if( nFrame>p->nMaxFrame ){
-    p->nMaxFrame = nFrame;
-  }
-  if( nFrame>=CHECKPOINT_STARVATION_FRAMELIMIT ){
-    sqlite3_wal_checkpoint_v2(db, zDb, p->eMode, 0, 0);
-  }
-  return SQLITE_OK;
-}
-
-static char *checkpoint_starvation_reader(int iTid, int iArg){
-  Error err = {0};
-  Sqlite db = {0};
-
-  opendb(&err, &db, "test.db", 0);
-  while( !timetostop(&err) ){
-    i64 iCount1, iCount2;
-    sql_script(&err, &db, "BEGIN");
-    iCount1 = execsql_i64(&err, &db, "SELECT count(x) FROM t1");
-    usleep(CHECKPOINT_STARVATION_READMS*1000);
-    iCount2 = execsql_i64(&err, &db, "SELECT count(x) FROM t1");
-    sql_script(&err, &db, "COMMIT");
-
-    if( iCount1!=iCount2 ){
-      test_error(&err, "Isolation failure - %lld %lld", iCount1, iCount2);
-    }
-  }
-  closedb(&err, &db);
-
-  print_and_free_err(&err);
-  return 0;
-}
-
-static void checkpoint_starvation_main(int nMs, CheckpointStarvationCtx *p){
-  Error err = {0};
-  Sqlite db = {0};
-  Threadset threads = {0};
-  int nInsert = 0;
-  int i;
-
-  opendb(&err, &db, "test.db", 1);
-  sql_script(&err, &db, 
-      "PRAGMA page_size = 1024;"
-      "PRAGMA journal_mode = WAL;"
-      "CREATE TABLE t1(x);"
-  );
-
-  setstoptime(&err, nMs);
-
-  for(i=0; i<4; i++){
-    launch_thread(&err, &threads, checkpoint_starvation_reader, 0);
-    usleep(CHECKPOINT_STARVATION_READMS*1000/4);
-  }
-
-  sqlite3_wal_hook(db.db, checkpoint_starvation_walhook, (void *)p);
-  while( !timetostop(&err) ){
-    sql_script(&err, &db, "INSERT INTO t1 VALUES(randomblob(1200))");
-    nInsert++;
-  }
-
-  printf(" Checkpoint mode  : %s\n",
-      p->eMode==SQLITE_CHECKPOINT_PASSIVE ? "PASSIVE" : "RESTART"
-  );
-  printf(" Peak WAL         : %d frames\n", p->nMaxFrame);
-  printf(" Transaction count: %d transactions\n", nInsert);
-
-  join_all_threads(&err, &threads);
-  closedb(&err, &db);
-  print_and_free_err(&err);
-}
-
-static void checkpoint_starvation_1(int nMs){
-  Error err = {0};
-  CheckpointStarvationCtx ctx = { SQLITE_CHECKPOINT_PASSIVE, 0 };
-  checkpoint_starvation_main(nMs, &ctx);
-  if( ctx.nMaxFrame<(CHECKPOINT_STARVATION_FRAMELIMIT*10) ){
-    test_error(&err, "WAL failed to grow - %d frames", ctx.nMaxFrame);
-  }
-  print_and_free_err(&err);
-}
-
-static void checkpoint_starvation_2(int nMs){
-  Error err = {0};
-  CheckpointStarvationCtx ctx = { SQLITE_CHECKPOINT_RESTART, 0 };
-  checkpoint_starvation_main(nMs, &ctx);
-  if( ctx.nMaxFrame>CHECKPOINT_STARVATION_FRAMELIMIT+10 ){
-    test_error(&err, "WAL grew too large - %d frames", ctx.nMaxFrame);
-  }
-  print_and_free_err(&err);
-}
-
-