From 22fd9730a06b23ad93f31fed3377fcc51f3447df Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Tue, 24 Mar 2009 17:32:43 +0000 Subject: * target-select.cc (instantiate_target): Don't acquire the lock if the instantiated_target_ field has already been set. --- gold/target-select.cc | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'gold/target-select.cc') diff --git a/gold/target-select.cc b/gold/target-select.cc index 55d63b2dac..dcd3017f07 100644 --- a/gold/target-select.cc +++ b/gold/target-select.cc @@ -60,10 +60,15 @@ Target_selector::Target_selector(int machine, int size, bool is_big_endian, Target* Target_selector::instantiate_target() { - this->initialize_lock_.initialize(); - Hold_optional_lock hl(this->lock_); + // We assume that the pointer will either be written entirely or not + // at all. if (this->instantiated_target_ == NULL) - this->instantiated_target_ = this->do_instantiate_target(); + { + this->initialize_lock_.initialize(); + Hold_optional_lock hl(this->lock_); + if (this->instantiated_target_ == NULL) + this->instantiated_target_ = this->do_instantiate_target(); + } return this->instantiated_target_; } -- cgit v1.2.3