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[SCM] archer-tromey-optional-psymtab: Use posix_madvise. This provides a small but consistent speedup.
- From: tromey at sourceware dot org
- To: archer-commits at sourceware dot org
- Date: 11 Dec 2009 23:49:06 -0000
- Subject: [SCM] archer-tromey-optional-psymtab: Use posix_madvise. This provides a small but consistent speedup.
The branch, archer-tromey-optional-psymtab has been updated
via e3fa2dd94f8b3ece2c5cc55c66a162a748e42e3d (commit)
from 23ec414529d89fc389f846241a2ee76a6884d1b1 (commit)
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- Log -----------------------------------------------------------------
commit e3fa2dd94f8b3ece2c5cc55c66a162a748e42e3d
Author: Tom Tromey <tromey@redhat.com>
Date: Fri Dec 11 16:47:21 2009 -0700
Use posix_madvise. This provides a small but consistent speedup.
-----------------------------------------------------------------------
Summary of changes:
gdb/dwarf2read.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
First 500 lines of diff:
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 61044e7..c31d330 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -2882,6 +2882,7 @@ dwarf2_read_section_1 (struct objfile *objfile,
{
info->destructor = munmap_section_buffer;
info->buffer = retbuf + (sectp->filepos & (pagesize - 1)) ;
+ posix_madvise (retbuf, map_length, POSIX_MADV_WILLNEED);
return;
}
}
@@ -3497,8 +3498,6 @@ build_type_psymtabs (struct objfile *objfile)
static void
dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline)
{
- /* Instead of reading this into a big buffer, we should probably use
- mmap() on architectures that support it. (FIXME) */
bfd *abfd = objfile->obfd;
gdb_byte *info_ptr;
struct cleanup *back_to;
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