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      1 # Copyright (C) 2013-2024 Free Software Foundation, Inc.
      2 
      3 # This program is free software; you can redistribute it and/or modify
      4 # it under the terms of the GNU General Public License as published by
      5 # the Free Software Foundation; either version 3 of the License, or
      6 # (at your option) any later version.
      7 #
      8 # This program is distributed in the hope that it will be useful,
      9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
     10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     11 # GNU General Public License for more details.
     12 #
     13 # You should have received a copy of the GNU General Public License
     14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
     15 
     16 # This test case is to test the performance of GDB when it is handling
     17 # the shared libraries of inferior are loaded and unloaded.
     18 # There are two parameters in this test:
     19 #  - SOLIB_COUNT is the number of shared libraries program will load
     20 #    and unload
     21 #  - SOLIB_DLCLOSE_REVERSED_ORDER controls the order of dlclose shared
     22 #    libraries.  If it is set, program dlclose shared libraries in a
     23 #    reversed order of loading.
     24 
     25 load_lib perftest.exp
     26 
     27 require allow_perf_tests
     28 
     29 standard_testfile .c
     30 set executable $testfile
     31 set expfile $testfile.exp
     32 
     33 # make check-perf RUNTESTFLAGS='solib.exp SOLIB_COUNT=1024'
     34 if ![info exists SOLIB_COUNT] {
     35     set SOLIB_COUNT 128
     36 }
     37 
     38 PerfTest::assemble {
     39     global SOLIB_COUNT
     40     global srcdir subdir srcfile binfile
     41 
     42     for {set i 0} {$i < $SOLIB_COUNT} {incr i} {
     43 
     44 	# Produce source files.
     45 	set libname "solib-lib$i"
     46 	set src [standard_output_file $libname.c]
     47 	set exe [standard_output_file $libname]
     48 
     49 	gdb_produce_source $src "int shr$i (void) {return 0;}"
     50 
     51 	# Compile.
     52 	if { [gdb_compile_shlib $src $exe {debug}] != "" } {
     53 	    return -1
     54 	}
     55 
     56 	# Delete object files to save some space.
     57 	file delete [standard_output_file  "solib-lib$i.c.o"]
     58     }
     59 
     60     set compile_flags {debug shlib_load}
     61     global SOLIB_DLCLOSE_REVERSED_ORDER
     62 
     63     if [info exists SOLIB_DLCLOSE_REVERSED_ORDER] {
     64 	lappend compile_flags "additional_flags=-DSOLIB_DLCLOSE_REVERSED_ORDER"
     65     }
     66 
     67     if { [gdb_compile "$srcdir/$subdir/$srcfile" ${binfile} executable  $compile_flags] != "" } {
     68 	return -1
     69     }
     70 
     71     return 0
     72 } {
     73     global binfile
     74 
     75     clean_restart $binfile
     76 
     77     if ![runto_main] {
     78 	return -1
     79     }
     80     return 0
     81 } {
     82     global SOLIB_COUNT
     83 
     84     gdb_test_python_run "SolibLoadUnload\($SOLIB_COUNT\)"
     85     return 0
     86 }
     87