From FEDORA_PATCHES Mon Sep 17 00:00:00 2001 From: Fedora GDB patches Date: Fri, 27 Oct 2017 21:07:50 +0200 Subject: gdb-6.5-gcore-buffer-limit-test.patch ;; Test gcore memory and time requirements for large inferiors. ;;=fedoratest diff --git a/gdb/testsuite/gdb.base/gcore-excessive-memory.c b/gdb/testsuite/gdb.base/gcore-excessive-memory.c new file mode 100644 --- /dev/null +++ b/gdb/testsuite/gdb.base/gcore-excessive-memory.c @@ -0,0 +1,37 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2008 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 2 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, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + Please email any bugs, comments, and/or additions to this file to: + bug-gdb@prep.ai.mit.edu */ + +#include +#include + +#define MEGS 64 + +int main() +{ + void *mem; + + mem = malloc (MEGS * 1024ULL * 1024ULL); + + for (;;) + sleep (1); + + return 0; +} diff --git a/gdb/testsuite/gdb.base/gcore-excessive-memory.exp b/gdb/testsuite/gdb.base/gcore-excessive-memory.exp new file mode 100644 --- /dev/null +++ b/gdb/testsuite/gdb.base/gcore-excessive-memory.exp @@ -0,0 +1,99 @@ +# Copyright 2008 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 2 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, write to the Free Software +# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +if {[use_gdb_stub]} { + untested "skipping test because of use_gdb_stub" + return -1 +} + +set testfile gcore-excessive-memory +set srcfile ${testfile}.c +set shfile [standard_output_file ${testfile}-gdb.sh] +set corefile [standard_output_file ${testfile}.core] +set binfile [standard_output_file ${testfile}] +if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { + untested "Couldn't compile test program" + return -1 +} + +set f [open "|getconf PAGESIZE" "r"] +gets $f pagesize +close $f + +set pid_of_bin [eval exec $binfile &] +sleep 2 + +# Get things started. + +gdb_exit +gdb_start +gdb_reinitialize_dir $srcdir/$subdir +gdb_load ${binfile} + +set pid_of_gdb [exp_pid -i [board_info host fileid]] + +gdb_test "attach $pid_of_bin" "Attaching to .*" "attach" +gdb_test "up 99" "in main .*" "verify we can get to main" + +proc memory_v_pages_get {} { + global pid_of_gdb pagesize + set fd [open "/proc/$pid_of_gdb/statm"] + gets $fd line + close $fd + # number of pages of virtual memory + scan $line "%d" drs + return $drs +} + +set pages_found [memory_v_pages_get] + +# It must be definitely less than `MEGS' of `gcore-excessive-memory.c'. +set mb_gcore_reserve 4 +verbose -log "pages_found = $pages_found, mb_gcore_reserve = $mb_gcore_reserve" +set kb_found [expr $pages_found * $pagesize / 1024] +set kb_permit [expr $kb_found + 1 * 1024 + $mb_gcore_reserve * 1024] +verbose -log "kb_found = $kb_found, kb_permit = $kb_permit" + +# Create the ulimit wrapper. +set f [open $shfile "w"] +puts $f "#! /bin/sh" +puts $f "ulimit -v $kb_permit" +puts $f "exec $GDB \"\$@\"" +close $f +remote_exec host "chmod +x $shfile" + +gdb_exit +set GDBold $GDB +set GDB "$shfile" +gdb_start +set GDB $GDBold + +gdb_reinitialize_dir $srcdir/$subdir +gdb_load ${binfile} + +set pid_of_gdb [exp_pid -i [board_info host fileid]] + +gdb_test "attach $pid_of_bin" "Attaching to .*" "attach" +gdb_test "up 99" "in main .*" "verify we can get to main" + +verbose -log "kb_found before gcore = [expr [memory_v_pages_get] * $pagesize / 1024]" + +gdb_test "gcore $corefile" "Saved corefile \[^\n\r\]*" "Save the core file" + +verbose -log "kb_found after gcore = [expr [memory_v_pages_get] * $pagesize / 1024]" + +# Cleanup. +exec kill -9 $pid_of_bin