projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 88b9d363 | 1 | # Copyright 2015-2022 Free Software Foundation, Inc. |
| 4eec2deb PA |
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 | # Test running a program that spawns enough threads that the tid of an | |
| 17 | # exited thread is reused. GDB should not crash when this happens. | |
| 18 | ||
| 19 | standard_testfile | |
| 20 | ||
| 21 | if {[prepare_for_testing "failed to prepare" $testfile $srcfile { debug pthreads }] == -1} { | |
| 22 | return -1 | |
| 23 | } | |
| 24 | ||
| 25 | clean_restart ${binfile} | |
| 26 | ||
| 50441f0f | 27 | if ![runto_main] { |
| bc6c7af4 | 28 | fail "can't run to main" |
| 4eec2deb PA |
29 | return -1 |
| 30 | } | |
| 31 | ||
| 32 | delete_breakpoints | |
| 33 | ||
| 34 | # Avoid dumping a ton of thread create/exit info in the logs. | |
| 35 | gdb_test_no_output "set print thread-events off" | |
| 36 | ||
| 37 | gdb_breakpoint "after_count" | |
| 38 | gdb_continue_to_breakpoint "after_count" | |
| 39 | ||
| 40 | # Get value of VARIABLE in the inferior. | |
| 41 | ||
| 42 | proc getvar {variable} { | |
| 43 | global decimal | |
| 44 | global gdb_prompt | |
| 45 | ||
| 46 | set value 0 | |
| 47 | ||
| 48 | set msg "get $variable" | |
| 49 | gdb_test_multiple "print $variable" $msg { | |
| 50 | -re " = ($decimal)\r\n$gdb_prompt $" { | |
| 51 | set value $expect_out(1,string) | |
| 52 | pass $msg | |
| 53 | } | |
| 54 | } | |
| 55 | return $value | |
| 56 | } | |
| 57 | ||
| 58 | set reuse_time [getvar "reuse_time"] | |
| 59 | ||
| 60 | # Now the real test. Run to a breakpoint in a thread that exits | |
| 61 | # immediately once resumed. The thread ends up left on the thread | |
| 62 | # list, marked exited (exactly because it's the selected thread). | |
| 63 | gdb_breakpoint "do_nothing_thread_func" | |
| 64 | gdb_continue_to_breakpoint "do_nothing_thread_func" | |
| 65 | ||
| 66 | delete_breakpoints | |
| 67 | ||
| 68 | # Let the program continue, constantly spawning short-lived threads | |
| 69 | # (one at a time). On some targets, after a bit, a new thread reuses | |
| 70 | # the tid of the old exited thread that we still have selected. GDB | |
| 71 | # should not crash in this situation. Of course, if the tid number | |
| 72 | # space is shared between all processes in the system (such as on | |
| 73 | # Linux), there's a chance that some other process grabs the TID, but | |
| 74 | # that can never cause a spurious test fail. | |
| 75 | gdb_breakpoint "after_reuse_time" | |
| 76 | ||
| 77 | # Higher than what the test program sleeps before exiting. | |
| 78 | set timeout [expr $reuse_time * 2] | |
| 79 | ||
| 80 | gdb_continue_to_breakpoint "after_reuse_time" |