mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 04:52:05 +08:00
76 lines
2.7 KiB
Plaintext
76 lines
2.7 KiB
Plaintext
# Copyright 2012-2018 Free Software Foundation, Inc.
|
|
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
# The in-memory cache.
|
|
array set gdb_data_cache {}
|
|
|
|
# A helper for gdb_caching_proc that handles the caching.
|
|
|
|
proc gdb_do_cache {name} {
|
|
global gdb_data_cache objdir
|
|
global GDB_PARALLEL
|
|
|
|
# See if some other process wrote the cache file. Cache value per
|
|
# "board" to handle runs with multiple options
|
|
# (e.g. unix/{-m32,-64}) correctly. We use "file join" here
|
|
# because we later use this in a real filename.
|
|
set cache_name [file join [target_info name] $name]
|
|
|
|
if {[info exists gdb_data_cache($cache_name)]} {
|
|
verbose "$name: returning '$gdb_data_cache($cache_name)' from cache" 2
|
|
return $gdb_data_cache($cache_name)
|
|
}
|
|
|
|
if {[info exists GDB_PARALLEL]} {
|
|
set cache_filename [make_gdb_parallel_path cache $cache_name]
|
|
if {[file exists $cache_filename]} {
|
|
set fd [open $cache_filename]
|
|
set gdb_data_cache($cache_name) [read -nonewline $fd]
|
|
close $fd
|
|
verbose "$name: returning '$gdb_data_cache($cache_name)' from file cache" 2
|
|
return $gdb_data_cache($cache_name)
|
|
}
|
|
}
|
|
|
|
set real_name gdb_real__$name
|
|
set gdb_data_cache($cache_name) [uplevel 1 $real_name]
|
|
|
|
if {[info exists GDB_PARALLEL]} {
|
|
verbose "$name: returning '$gdb_data_cache($cache_name)' and writing file" 2
|
|
file mkdir [file dirname $cache_filename]
|
|
# Make sure to write the results file atomically.
|
|
set fd [open $cache_filename.[pid] w]
|
|
puts $fd $gdb_data_cache($cache_name)
|
|
close $fd
|
|
file rename -force -- $cache_filename.[pid] $cache_filename
|
|
}
|
|
return $gdb_data_cache($cache_name)
|
|
}
|
|
|
|
# Define a new proc named NAME that takes no arguments. BODY is the
|
|
# body of the proc. The proc will evaluate BODY and cache the
|
|
# results, both in memory and, if GDB_PARALLEL is defined, in the
|
|
# filesystem for use across invocations of dejagnu.
|
|
|
|
proc gdb_caching_proc {name body} {
|
|
# Define the underlying proc that we'll call.
|
|
set real_name gdb_real__$name
|
|
proc $real_name {} $body
|
|
|
|
# Define the advertised proc.
|
|
proc $name {} [list gdb_do_cache $name]
|
|
}
|