Changeset: 3c0e42ece89f for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/3c0e42ece89f
Modified Files:
gdk/gdk_bbp.c
Branch: Jan2022
Log Message:
Truncate heap files that are too large during startup.
diffs (56 lines):
diff --git a/gdk/gdk_bbp.c b/gdk/gdk_bbp.c
--- a/gdk/gdk_bbp.c
+++ b/gdk/gdk_bbp.c
@@ -84,6 +84,16 @@
#ifndef S_ISDIR
#define S_ISDIR(mode) (((mode) & _S_IFMT) == _S_IFDIR)
#endif
+#ifndef O_CLOEXEC
+#ifdef _O_NOINHERIT
+#define O_CLOEXEC _O_NOINHERIT /* Windows */
+#else
+#define O_CLOEXEC 0
+#endif
+#endif
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
/*
* The BBP has a fixed address, so re-allocation due to a growing BBP
@@ -970,6 +980,17 @@ BBPcheckbats(unsigned bbpversion)
GDKfree(path);
return GDK_FAIL;
}
+ size_t hfree = b->theap->free;
+ hfree = (hfree + GDK_mmap_pagesize - 1) &
~(GDK_mmap_pagesize - 1);
+ if (hfree == 0)
+ hfree = GDK_mmap_pagesize;
+ if (statb.st_size > (off_t) hfree) {
+ int fd;
+ if ((fd = MT_open(path, O_RDWR | O_CLOEXEC |
O_BINARY)) >= 0) {
+ (void) ftruncate(fd, hfree);
+ (void) close(fd);
+ }
+ }
GDKfree(path);
}
if (b->tvheap != NULL && b->tvheap->free > 0) {
@@ -987,6 +1008,17 @@ BBPcheckbats(unsigned bbpversion)
GDKfree(path);
return GDK_FAIL;
}
+ size_t hfree = b->tvheap->free;
+ hfree = (hfree + GDK_mmap_pagesize - 1) &
~(GDK_mmap_pagesize - 1);
+ if (hfree == 0)
+ hfree = GDK_mmap_pagesize;
+ if (statb.st_size > (off_t) hfree) {
+ int fd;
+ if ((fd = MT_open(path, O_RDWR | O_CLOEXEC |
O_BINARY)) >= 0) {
+ (void) ftruncate(fd, hfree);
+ (void) close(fd);
+ }
+ }
GDKfree(path);
}
}
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