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| author | Simon Marchi <simon.marchi@polymtl.ca> | 2021-06-11 18:29:33 -0400 |
|---|---|---|
| committer | Simon Marchi <simon.marchi@polymtl.ca> | 2021-07-12 20:46:53 -0400 |
| commit | 922cc93d5da6a6dc422b7e7a09ee745414d67457 (patch) | |
| tree | 4963b5066e4c34a8b7b2331195c977254e55973e /gdb/inferior.h | |
| parent | 71a2349005e74e0d64554f5c88e3632f3ace167a (diff) | |
| download | gdb-922cc93d5da6a6dc422b7e7a09ee745414d67457.zip gdb-922cc93d5da6a6dc422b7e7a09ee745414d67457.tar.gz gdb-922cc93d5da6a6dc422b7e7a09ee745414d67457.tar.bz2 | |
gdb: maintain ptid -> thread map, optimize find_thread_ptid
When debugging a large number of threads (thousands), looking up a
thread by ptid_t using the inferior::thread_list linked list can add up.
Add inferior::thread_map, an std::unordered_map indexed by ptid_t, and
change the find_thread_ptid function to look up a thread using
std::unordered_map::find, instead of iterating on all of the
inferior's threads. This should make it faster to look up a thread
from its ptid.
Change-Id: I3a8da0a839e18dee5bb98b8b7dbeb7f3dfa8ae1c
Co-Authored-By: Pedro Alves <pedro@palves.net>
Diffstat (limited to 'gdb/inferior.h')
| -rw-r--r-- | gdb/inferior.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gdb/inferior.h b/gdb/inferior.h index 2bfe29a..6662a3b 100644 --- a/gdb/inferior.h +++ b/gdb/inferior.h @@ -63,6 +63,8 @@ struct thread_info; #include "process-stratum-target.h" #include "displaced-stepping.h" +#include <unordered_map> + struct infcall_suspend_state; struct infcall_control_state; @@ -391,6 +393,10 @@ public: /* This inferior's thread list, sorted by creation order. */ intrusive_list<thread_info> thread_list; + /* A map of ptid_t to thread_info*, for average O(1) ptid_t lookup. + Exited threads do not appear in the map. */ + std::unordered_map<ptid_t, thread_info *, hash_ptid> ptid_thread_map; + /* Returns a range adapter covering the inferior's threads, including exited threads. Used like this: |