[sql] Import SQLite 3.17.0.

third_party/sqlite/src/src/pager.h

Index: third_party/sqlite/src/src/pager.h
diff --git a/third_party/sqlite/src/src/pager.h b/third_party/sqlite/src/src/pager.h
index 3552a876e788610ac637ea8101301aa9b3f6d878..585ef2949794f910fdd15dcbb966b292147fa12a 100644
--- a/third_party/sqlite/src/src/pager.h
+++ b/third_party/sqlite/src/src/pager.h
@@ -14,8 +14,8 @@
 ** at a time and provides a journal for rollback.
 */
 
-#ifndef _PAGER_H_
-#define _PAGER_H_
+#ifndef SQLITE_PAGER_H
+#define SQLITE_PAGER_H
 
 /*
 ** Default maximum size for persistent journal files. A negative 
@@ -68,7 +68,11 @@ typedef struct PgHdr DbPage;
 #define PAGER_LOCKINGMODE_EXCLUSIVE   1
 
 /*
-** Numeric constants that encode the journalmode.  
+** Numeric constants that encode the journalmode.
+**
+** The numeric values encoded here (other than PAGER_JOURNALMODE_QUERY)
+** are exposed in the API via the "PRAGMA journal_mode" command and
+** therefore cannot be changed without a compatibility break.
 */
 #define PAGER_JOURNALMODE_QUERY     (-1)  /* Query the value of journalmode */
 #define PAGER_JOURNALMODE_DELETE      0   /* Commit by deleting journal file */
@@ -86,15 +90,21 @@ typedef struct PgHdr DbPage;
 
 /*
 ** Flags for sqlite3PagerSetFlags()
+**
+** Value constraints (enforced via assert()):
+**    PAGER_FULLFSYNC      == SQLITE_FullFSync
+**    PAGER_CKPT_FULLFSYNC == SQLITE_CkptFullFSync
+**    PAGER_CACHE_SPILL    == SQLITE_CacheSpill
 */
 #define PAGER_SYNCHRONOUS_OFF       0x01  /* PRAGMA synchronous=OFF */
 #define PAGER_SYNCHRONOUS_NORMAL    0x02  /* PRAGMA synchronous=NORMAL */
 #define PAGER_SYNCHRONOUS_FULL      0x03  /* PRAGMA synchronous=FULL */
-#define PAGER_SYNCHRONOUS_MASK      0x03  /* Mask for three values above */
-#define PAGER_FULLFSYNC             0x04  /* PRAGMA fullfsync=ON */
-#define PAGER_CKPT_FULLFSYNC        0x08  /* PRAGMA checkpoint_fullfsync=ON */
-#define PAGER_CACHESPILL            0x10  /* PRAGMA cache_spill=ON */
-#define PAGER_FLAGS_MASK            0x1c  /* All above except SYNCHRONOUS */
+#define PAGER_SYNCHRONOUS_EXTRA     0x04  /* PRAGMA synchronous=EXTRA */
+#define PAGER_SYNCHRONOUS_MASK      0x07  /* Mask for four values above */
+#define PAGER_FULLFSYNC             0x08  /* PRAGMA fullfsync=ON */
+#define PAGER_CKPT_FULLFSYNC        0x10  /* PRAGMA checkpoint_fullfsync=ON */
+#define PAGER_CACHESPILL            0x20  /* PRAGMA cache_spill=ON */
+#define PAGER_FLAGS_MASK            0x38  /* All above except SYNCHRONOUS */
 
 /*
 ** The remainder of this file contains the declarations of the functions
@@ -112,7 +122,7 @@ int sqlite3PagerOpen(
   int,
   void(*)(DbPage*)
 );
-int sqlite3PagerClose(Pager *pPager);
+int sqlite3PagerClose(Pager *pPager, sqlite3*);
 int sqlite3PagerReadFileheader(Pager*, int, unsigned char*);
 
 /* Functions used to configure a Pager object. */
@@ -163,15 +173,21 @@ int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint);
 int sqlite3PagerSharedLock(Pager *pPager);
 
 #ifndef SQLITE_OMIT_WAL
-  int sqlite3PagerCheckpoint(Pager *pPager, int, int*, int*);
+  int sqlite3PagerCheckpoint(Pager *pPager, sqlite3*, int, int*, int*);
   int sqlite3PagerWalSupported(Pager *pPager);
   int sqlite3PagerWalCallback(Pager *pPager);
   int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen);
-  int sqlite3PagerCloseWal(Pager *pPager);
+  int sqlite3PagerCloseWal(Pager *pPager, sqlite3*);
+# ifdef SQLITE_DIRECT_OVERFLOW_READ
+  int sqlite3PagerUseWal(Pager *pPager, Pgno);
+# endif
 # ifdef SQLITE_ENABLE_SNAPSHOT
   int sqlite3PagerSnapshotGet(Pager *pPager, sqlite3_snapshot **ppSnapshot);
   int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSnapshot);
+  int sqlite3PagerSnapshotRecover(Pager *pPager);
 # endif
+#else
+# define sqlite3PagerUseWal(x,y) 0
 #endif
 
 #ifdef SQLITE_ENABLE_ZIPVFS
@@ -190,11 +206,10 @@ sqlite3_vfs *sqlite3PagerVfs(Pager*);
 sqlite3_file *sqlite3PagerFile(Pager*);
 sqlite3_file *sqlite3PagerJrnlFile(Pager*);
 const char *sqlite3PagerJournalname(Pager*);
-int sqlite3PagerNosync(Pager*);
 void *sqlite3PagerTempSpace(Pager*);
 int sqlite3PagerIsMemdb(Pager*);
 void sqlite3PagerCacheStat(Pager *, int, int, int *);
-void sqlite3PagerClearCache(Pager *);
+void sqlite3PagerClearCache(Pager*);
 int sqlite3SectorSize(sqlite3_file *);
 
 /* Functions used to truncate the database file. */
@@ -221,4 +236,4 @@ void *sqlite3PagerCodec(DbPage *);
 # define enable_simulated_io_errors()
 #endif
 
-#endif /* _PAGER_H_ */
+#endif /* SQLITE_PAGER_H */