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| author | Tom Tromey <tom@tromey.com> | 2019-03-16 14:36:57 -0600 |
|---|---|---|
| committer | Tom Tromey <tom@tromey.com> | 2019-11-26 14:02:58 -0700 |
| commit | 22138db609721897c213e5a08ccaca206c0fb1f6 (patch) | |
| tree | 5aa92270cde9c547bb91d0d5a1a16f69cec09d58 /gdb/maint.c | |
| parent | d55c9a68473d4378e484a870d3ca4222a68078ca (diff) | |
| download | gdb-22138db609721897c213e5a08ccaca206c0fb1f6.zip gdb-22138db609721897c213e5a08ccaca206c0fb1f6.tar.gz gdb-22138db609721897c213e5a08ccaca206c0fb1f6.tar.bz2 | |
Add maint set/show worker-threads
This adds maint commands to control the number of worker threads that
gdb can use.
2019-11-26 Tom Tromey <tom@tromey.com>
* NEWS: Add entry.
* maint.c (_initialize_maint_cmds): Add "worker-threads" maint
commands. Call update_thread_pool_size.
(update_thread_pool_size, maintenance_set_worker_threads): New
functions.
(n_worker_threads): New global.
gdb/doc/ChangeLog
2019-11-26 Tom Tromey <tom@tromey.com>
* gdb.texinfo (Maintenance Commands): Document new maint
commands.
Change-Id: I4fb514faa05879d8afe62c77036a4469d57dca2a
Diffstat (limited to 'gdb/maint.c')
| -rw-r--r-- | gdb/maint.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/gdb/maint.c b/gdb/maint.c index ce59ef6..7ab3fdb 100644 --- a/gdb/maint.c +++ b/gdb/maint.c @@ -46,6 +46,10 @@ #include "cli/cli-setshow.h" #include "cli/cli-cmds.h" +#if CXX_STD_THREAD +#include "gdbsupport/thread-pool.h" +#endif + static void maintenance_do_deprecate (const char *, int); /* Access the maintenance subcommands. */ @@ -840,6 +844,30 @@ maintenance_set_profile_cmd (const char *args, int from_tty, error (_("Profiling support is not available on this system.")); } #endif + +static int n_worker_threads = -1; + +/* Update the thread pool for the desired number of threads. */ +static void +update_thread_pool_size () +{ +#if CXX_STD_THREAD + int n_threads = n_worker_threads; + + if (n_threads < 0) + n_threads = std::thread::hardware_concurrency (); + + gdb::thread_pool::g_thread_pool->set_thread_count (n_threads); +#endif +} + +static void +maintenance_set_worker_threads (const char *args, int from_tty, + struct cmd_list_element *c) +{ + update_thread_pool_size (); +} + /* If true, display time usage both at startup and for each command. */ @@ -1313,4 +1341,17 @@ When enabled GDB is profiled."), show_maintenance_profile_p, &maintenance_set_cmdlist, &maintenance_show_cmdlist); + + add_setshow_zuinteger_unlimited_cmd ("worker-threads", + class_maintenance, + &n_worker_threads, _("\ +Set the number of worker threads GDB can use."), _("\ +Show the number of worker threads GDB can use."), _("\ +GDB may use multiple threads to speed up certain CPU-intensive operations,\n\ +such as demangling symbol names."), + maintenance_set_worker_threads, NULL, + &maintenance_set_cmdlist, + &maintenance_show_cmdlist); + + update_thread_pool_size (); } |