diff options
author | Boris Kolpackov <boris@codesynthesis.com> | 2020-06-25 08:05:00 +0200 |
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committer | Boris Kolpackov <boris@codesynthesis.com> | 2020-06-25 08:05:00 +0200 |
commit | 3875999b2642013dfddd6cb1fa7b3ee7ac14f9d7 (patch) | |
tree | 3ffb23028daeadfdfaba166472524c254ecf62c3 /libbuild2/context.ixx | |
parent | 454ae53155c64fd4edea2cd166ef77c638ac0f6e (diff) |
Eliminate phase unlock for case where we are not going to wait
Diffstat (limited to 'libbuild2/context.ixx')
-rw-r--r-- | libbuild2/context.ixx | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/libbuild2/context.ixx b/libbuild2/context.ixx index 46fe4f7..73601d4 100644 --- a/libbuild2/context.ixx +++ b/libbuild2/context.ixx @@ -56,8 +56,12 @@ namespace build2 inline void wait_guard:: wait () { - phase_unlock u (*ctx, phase); - ctx->sched.wait (start_count, *task_count); + if (task_count->load (memory_order_acquire) > start_count) + { + phase_unlock u (*ctx, phase); + ctx->sched.wait (start_count, *task_count); + } + task_count = nullptr; } } |