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-rw-r--r--common/timing_opt.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/common/timing_opt.cc b/common/timing_opt.cc
index c0968db7..898222ab 100644
--- a/common/timing_opt.cc
+++ b/common/timing_opt.cc
@@ -84,6 +84,7 @@ class TimingOptimiser
bool optimise()
{
log_info("Running timing-driven placement optimisation...\n");
+ ctx->lock();
if (ctx->verbose)
timing_analysis(ctx, false, true, false, false);
for (int i = 0; i < 30; i++) {
@@ -96,6 +97,7 @@ class TimingOptimiser
if (ctx->verbose)
timing_analysis(ctx, false, true, false, false);
}
+ ctx->unlock();
return true;
}