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eliminate incorrect cases of async_push_work, where pushes which could occur on worker threads may try to write to a cache that is currently being held, when the push occurs (when all threads are saturated) - async_push_work must never be called from within a cache locking mechanism

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This commit is contained in:
Ryan Fleury
2024-11-14 09:55:03 -08:00
parent ff45952f07
commit 420f089fda
3 changed files with 24 additions and 12 deletions
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src/dbgi/dbgi.c
+8 -2
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@@ -493,7 +493,10 @@ di_open(DI_Key *key)
di_u2p_enqueue_key(&key_normalized, max_U64);
ins_atomic_u64_eval_assign(&node->last_time_requested_us, os_now_microseconds());
ins_atomic_u64_inc_eval(&node->request_count);
async_push_work(di_parse_work, .completion_counter = &node->completion_count);
DeferLoop(os_rw_mutex_drop_w(stripe->rw_mutex), os_rw_mutex_take_w(stripe->rw_mutex))
{
async_push_work(di_parse_work, .completion_counter = &node->completion_count);
}
}
}
}
@@ -616,7 +619,10 @@ di_rdi_from_key(DI_Scope *scope, DI_Key *key, U64 endt_us)
{
ins_atomic_u64_eval_assign(&node->last_time_requested_us, os_now_microseconds());
ins_atomic_u64_inc_eval(&node->request_count);
async_push_work(di_parse_work, .completion_counter = &node->completion_count);
DeferLoop(os_rw_mutex_drop_w(stripe->rw_mutex), os_rw_mutex_take_w(stripe->rw_mutex))
{
async_push_work(di_parse_work, .completion_counter = &node->completion_count);
}
}
//- rjf: time expired -> break