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Change the mmap_limit pragma to report the new limit, or to report the

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existing limit if called with no arguments.  Report the default mmap_limit
as part of PRAGMA compile_options.  Set the default mmmap_limit to 0 for
all systems other than linux, mac, windows, and solaris.

FossilOrigin-Name: 2d9f1327fe79e40435ce1e2594d7cd9a5aea0ef2
This commit is contained in:
drh
2013-04-03 13:09:18 +00:00
parent 6c96946475
commit 34f7490311
10 changed files with 43 additions and 33 deletions
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5
src/pager.c
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@@ -3358,9 +3358,10 @@ void sqlite3PagerSetCachesize(Pager *pPager, int mxPage){
static void pagerFixMaplimit(Pager *pPager){
sqlite3_file *fd = pPager->fd;
if( isOpen(fd) ){
sqlite3_int64 mx;
pPager->bUseFetch = (fd->pMethods->iVersion>=3) && pPager->mxMmap>0;
sqlite3OsFileControlHint(pPager->fd, SQLITE_FCNTL_MMAP_LIMIT,
(void*)&pPager->mxMmap);
mx = pPager->mxMmap;
sqlite3OsFileControlHint(pPager->fd, SQLITE_FCNTL_MMAP_LIMIT, &mx);
}
}