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Set timeout for gdb.reverse/*.exp test cases

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Hi,
This patch is to add a new board setting gdb_reverse_timeout, which is
used to set timeout for all gdb.reverse test cases, which are usually
very slow and cause some TIMEOUT failures, for example, on some arm
boards.  We have some alternatives to this approach, but I am not
satisfied with them:

 - Increase the timeout value.  This is the global change, and it may
   cause some delay where actual failures happen.
 - Set timeout by gdb_reverse_timeout in every gdb.reverse/*.exp.
   Then, we have to touch every file under gdb.reverse.

In this patch, we choose a central place to set timeout for all tests
in gdb.reverse, which is convenient.

gdb/testsuite:

2014-05-20  Yao Qi  <yao@codesourcery.com>

	* lib/gdb.exp (gdb_init): Set timeout if test file is under
	gdb.reverse directory and gdb_reverse_timeout exists in board
	setting.
	* README: Document gdb_reverse_timeout.
This commit is contained in:
Yao Qi 2014-05-09 15:06:12 +08:00
parent 73c9764f95
commit 8b696e3155
3 changed files with 21 additions and 0 deletions
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7
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,10 @@
2014-05-20 Yao Qi <yao@codesourcery.com>
* lib/gdb.exp (gdb_init): Set timeout if test file is under
gdb.reverse directory and gdb_reverse_timeout exists in board
setting.
* README: Document gdb_reverse_timeout.
2014-05-20 Yao Qi <yao@codesourcery.com>
* lib/gdb.exp (default_gdb_init): Rename argument 'args' by

9
gdb/testsuite/README
View File

@ -203,6 +203,15 @@ The default value of the timeout is defined in the file
`testsuite/config/unix.exp' (at least for Unix hosts; board files may
have their own values).
gdb_reverse_timeout
Defining this variable changes the default timeout duration when tests
under gdb.reverse directory are running. Process record and reverse
debugging is so slow that its tests have unexpected `TIMEOUT' test
failures. This global variable is useful to bump up the value of
`timeout' for gdb.reverse tests and doesn't cause any delay where
actual failures happen in the rest of the testsuite.
Board Settings
**************

5
gdb/testsuite/lib/gdb.exp
View File

@ -3691,6 +3691,11 @@ proc gdb_init { test_file_name } {
global timeout
set timeout $gdb_test_timeout
if { [regexp ".*gdb\.reverse\/.*" $test_file_name]
&& [target_info exists gdb_reverse_timeout] } {
set timeout [target_info gdb_reverse_timeout]
}
# If GDB_INOTIFY is given, check for writes to '.'. This is a
# debugging tool to help confirm that the test suite is
# parallel-safe. You need "inotifywait" from the