diff options
| author | Pavel Labath <labath@google.com> | 2017-05-15 13:02:37 +0000 |
|---|---|---|
| committer | Pavel Labath <labath@google.com> | 2017-05-15 13:02:37 +0000 |
| commit | cfccbd2ba74f607e21897c4dbb09146f5d47f0e8 (patch) | |
| tree | 3d781caf954c00ef655fb746beebf4008d54623c /lldb/source/Plugins/SymbolVendor | |
| parent | 60fcaa3311322a762fb2aad2dbf167d2577873e1 (diff) | |
Remove an expensive lock from Timer
The Timer destructor would grab a global mutex in order to update
execution time. Add a class to define a category once, statically; the
class adds itself to an atomic singly linked list, and thus subsequent
updates only need to use an atomic rather than grab a lock and perform a
hashtable lookup.
Differential Revision: https://reviews.llvm.org/D32823
Patch by Scott Smith <scott.smith@purestorage.com>.
Diffstat (limited to 'lldb/source/Plugins/SymbolVendor')
| -rw-r--r-- | lldb/source/Plugins/SymbolVendor/ELF/SymbolVendorELF.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lldb/source/Plugins/SymbolVendor/ELF/SymbolVendorELF.cpp b/lldb/source/Plugins/SymbolVendor/ELF/SymbolVendorELF.cpp index 363fba2b0bb..5a377d7b04f 100644 --- a/lldb/source/Plugins/SymbolVendor/ELF/SymbolVendorELF.cpp +++ b/lldb/source/Plugins/SymbolVendor/ELF/SymbolVendorELF.cpp @@ -92,8 +92,8 @@ SymbolVendorELF::CreateInstance(const lldb::ModuleSP &module_sp, if (file_spec_list.IsEmpty()) return NULL; - Timer scoped_timer(LLVM_PRETTY_FUNCTION, - "SymbolVendorELF::CreateInstance (module = %s)", + static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); + Timer scoped_timer(func_cat, "SymbolVendorELF::CreateInstance (module = %s)", module_sp->GetFileSpec().GetPath().c_str()); for (size_t idx = 0; idx < file_spec_list.GetSize(); ++idx) { |