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Add the soft_heap_limit pragma.

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FossilOrigin-Name: c326356f9a18bff5cf36bd59331e2cc207e349fa
This commit is contained in:
drh
2013-09-13 21:01:56 +00:00
parent d49c358e39
commit 55e85ca5f5
5 changed files with 62 additions and 25 deletions
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44
src/pragma.c
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@@ -55,18 +55,19 @@
#define PragTyp_PAGE_SIZE 24
#define PragTyp_SECURE_DELETE 25
#define PragTyp_SHRINK_MEMORY 26
#define PragTyp_SYNCHRONOUS 27
#define PragTyp_TABLE_INFO 28
#define PragTyp_TEMP_STORE 29
#define PragTyp_TEMP_STORE_DIRECTORY 30
#define PragTyp_WAL_AUTOCHECKPOINT 31
#define PragTyp_WAL_CHECKPOINT 32
#define PragTyp_ACTIVATE_EXTENSIONS 33
#define PragTyp_HEXKEY 34
#define PragTyp_KEY 35
#define PragTyp_REKEY 36
#define PragTyp_LOCK_STATUS 37
#define PragTyp_PARSER_TRACE 38
#define PragTyp_SOFT_HEAP_LIMIT 27
#define PragTyp_SYNCHRONOUS 28
#define PragTyp_TABLE_INFO 29
#define PragTyp_TEMP_STORE 30
#define PragTyp_TEMP_STORE_DIRECTORY 31
#define PragTyp_WAL_AUTOCHECKPOINT 32
#define PragTyp_WAL_CHECKPOINT 33
#define PragTyp_ACTIVATE_EXTENSIONS 34
#define PragTyp_HEXKEY 35
#define PragTyp_KEY 36
#define PragTyp_REKEY 37
#define PragTyp_LOCK_STATUS 38
#define PragTyp_PARSER_TRACE 39
static const struct sPragmaNames {
const char const *zName; /* Name of pragma */
u8 ePragTyp; /* PragTyp_XXX value */
@@ -202,6 +203,7 @@ static const struct sPragmaNames {
{ "short_column_names", PragTyp_FLAG,
SQLITE_ShortColNames },
{ "shrink_memory", PragTyp_SHRINK_MEMORY, 0 },
{ "soft_heap_limit", PragTyp_SOFT_HEAP_LIMIT, 0 },
#if defined(SQLITE_DEBUG)
{ "sql_trace", PragTyp_FLAG,
SQLITE_SqlTrace },
@@ -236,7 +238,7 @@ static const struct sPragmaNames {
{ "writable_schema", PragTyp_FLAG,
SQLITE_WriteSchema|SQLITE_RecoveryMode },
};
/* Number of pragmas: 54 on by default, 65 total. */
/* Number of pragmas: 55 on by default, 66 total. */
/* End of the automatically generated pragma table.
***************************************************************************/
@@ -1966,6 +1968,22 @@ void sqlite3Pragma(
break;
}
/*
** PRAGMA soft_heap_limit
** PRAGMA soft_heap_limit = N
**
** Call sqlite3_soft_heap_limit64(N). Return the result. If N is omitted,
** use -1.
*/
case PragTyp_SOFT_HEAP_LIMIT: {
sqlite3_int64 N;
if( zRight && sqlite3Atoi64(zRight, &N, 1000000, SQLITE_UTF8)==SQLITE_OK ){
sqlite3_soft_heap_limit64(N);
}
returnSingleInt(pParse, "soft_heap_limit", sqlite3_soft_heap_limit64(-1));
break;
}
#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
/*
** Report the current state of file logs for all databases