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authorHannes Domani <ssbssa@yahoo.de>2019-12-21 17:08:14 +0100
committerHannes Domani <ssbssa@yahoo.de>2020-01-23 18:44:27 +0100
commitc162ed3e66aa985fa2e79d0e7ccd2da80a532c1e (patch)
treeeab65ab7be42099b34e1d584bdc5500af23f5579 /gdb/windows-nat.c
parent24e648d4b80268c164ba1e1eecb581bf9c42745f (diff)
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Cache the text section offset of shared libraries
Each time a dll is loaded, update_solib_list is called. This in turn calls deep down xfer_partial -> windows_xfer_shared_libraries, which calls windows_xfer_shared_library for each loaded dll, and pe_text_section_offset reads the dll for the text section offset. Also if the data provided by xfer_partial is bigger than 4K, then all of this is done for each 4K chunk (see target_read_alloc_1). Caching of the text section offset improves the startup time of an application with >300 dynamically loaded plugins from 2m10s to 10s. And the shutdown time improves from 2m to 2s. gdb/ChangeLog: 2020-01-23 Hannes Domani <ssbssa@yahoo.de> * i386-cygwin-tdep.c (core_process_module_section): Update. * windows-nat.c (struct lm_info_windows): Add text_offset. (windows_xfer_shared_libraries): Update. * windows-tdep.c (windows_xfer_shared_library): Add text_offset_cached argument. * windows-tdep.h (windows_xfer_shared_library): Update.
Diffstat (limited to 'gdb/windows-nat.c')
-rw-r--r--gdb/windows-nat.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
index 901e642..366c98f 100644
--- a/gdb/windows-nat.c
+++ b/gdb/windows-nat.c
@@ -682,6 +682,7 @@ windows_nat_target::store_registers (struct regcache *regcache, int r)
struct lm_info_windows : public lm_info_base
{
LPVOID load_addr = 0;
+ CORE_ADDR text_offset = 0;
};
static struct so_list solib_start, *solib_end;
@@ -2974,6 +2975,7 @@ windows_xfer_shared_libraries (struct target_ops *ops,
windows_xfer_shared_library (so->so_name, (CORE_ADDR)
(uintptr_t) li->load_addr,
+ &li->text_offset,
target_gdbarch (), &obstack);
}
obstack_grow_str0 (&obstack, "</library-list>\n");