diff options
| author | Tom Tromey <tom@tromey.com> | 2019-03-16 14:36:57 -0600 |
|---|---|---|
| committer | Tom Tromey <tom@tromey.com> | 2019-10-01 13:38:26 -0600 |
| commit | 792581b91e2dba4401645db9b57160ef9c2d1d04 (patch) | |
| tree | 43a5397fa25a040ef07250747ef87590ae1e1b56 | |
| parent | cec2f67ef73d024dddbdf85e3546d1cf13014e68 (diff) | |
| download | gdb-792581b91e2dba4401645db9b57160ef9c2d1d04.zip gdb-792581b91e2dba4401645db9b57160ef9c2d1d04.tar.gz gdb-792581b91e2dba4401645db9b57160ef9c2d1d04.tar.bz2 | |
Add maint set/show max-worker-threads
This adds maint commands to control the maximum number of worker
threads that gdb can use.
2019-09-30 Tom Tromey <tom@tromey.com>
* NEWS: Add entry.
* maint.c (_initialize_maint_cmds): Add "max-worker-threads" maint
commands.
gdb/doc/ChangeLog
2019-09-30 Tom Tromey <tom@tromey.com>
* gdb.texinfo (Maintenance Commands): Document new maint
commands.
| -rw-r--r-- | gdb/ChangeLog | 6 | ||||
| -rw-r--r-- | gdb/NEWS | 6 | ||||
| -rw-r--r-- | gdb/doc/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/doc/gdb.texinfo | 14 | ||||
| -rw-r--r-- | gdb/maint.c | 12 |
5 files changed, 43 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index e2b91c6..d7407a3 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,11 @@ 2019-09-30 Tom Tromey <tom@tromey.com> + * NEWS: Add entry. + * maint.c (_initialize_maint_cmds): Add "max-worker-threads" maint + commands. + +2019-09-30 Tom Tromey <tom@tromey.com> + * minsyms.c (minimal_symbol_reader::install): Use parallel_for_each. * gdbsupport/parallel-for.h: New file. @@ -122,6 +122,12 @@ set style highlight background COLOR set style highlight intensity VALUE Control the styling of highlightings. +maint set max-worker-threads +maint show max-worker-threads + Control the maximum number of worker threads that can be used by GDB. + The default is "unlimited". Currently worker threads are only used when + demangling the names of linker symbols. + maint set test-settings KIND maint show test-settings KIND A set of commands used by the testsuite for exercising the settings diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index 0a10fa3..eef81f0 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,8 @@ +2019-09-30 Tom Tromey <tom@tromey.com> + + * gdb.texinfo (Maintenance Commands): Document new maint + commands. + 2019-09-20 Ulrich Weigand <uweigand@de.ibm.com> * doc/gdb.texinfo (Remote Configuration): Remove documentation for diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index f2713c0..04a4009 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -37663,6 +37663,20 @@ with the DWARF frame unwinders enabled. If DWARF frame unwinders are not supported for a particular target architecture, then enabling this flag does not cause them to be used. + +@kindex maint set max-worker-threads +@kindex maint show max-worker-threads +@item maint set max-worker-threads +@item maint show max-worker-threads +Control the number of worker threads that may be used by @value{GDBN}. +On capable hosts, @value{GDBN} may use multiple threads to speed up +certain CPU-intensive operations, such as demangling symbol names. +While the number of threads used by @value{GDBN} may vary, this +command can be used to set an upper bound on this number. The default +is @code{unlimited}. Note that this only controls worker threads +started by @value{GDBN} itself; libraries used by @value{GDBN} may +start threads of their own. + @kindex maint set profile @kindex maint show profile @cindex profiling GDB diff --git a/gdb/maint.c b/gdb/maint.c index ec9f4ab..8428bea 100644 --- a/gdb/maint.c +++ b/gdb/maint.c @@ -40,6 +40,7 @@ #include "top.h" #include "maint.h" #include "gdbsupport/selftest.h" +#include "gdbsupport/parallel-for.h" #include "cli/cli-decode.h" #include "cli/cli-utils.h" @@ -1312,4 +1313,15 @@ When enabled GDB is profiled."), show_maintenance_profile_p, &maintenance_set_cmdlist, &maintenance_show_cmdlist); + + add_setshow_zuinteger_unlimited_cmd ("max-worker-threads", + class_maintenance, + &gdb::max_threads, _("\ +Set the maximum number of worker threads GDB can use."), _("\ +Set the maximum 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."), + NULL, NULL, + &maintenance_set_cmdlist, + &maintenance_show_cmdlist); } |