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fix bad wait condition in ctrl memory cache accessing

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This commit is contained in:
Ryan Fleury
2025-06-02 14:45:52 -07:00
parent 94b969f203
commit 44280f3dd0
1 changed files with 7 additions and 17 deletions
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src/ctrl/ctrl_core.c
+7 -17
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@@ -1652,7 +1652,6 @@ ctrl_key_from_process_vaddr_range(CTRL_Handle process, Rng1U64 vaddr_range, B32
//- rjf: loop: try to look for current results, request if not there, wait if we can, repeat until we can't
U64 mem_gen = ctrl_mem_gen();
B32 key_is_stale = 0;
B32 requested = 0;
for(;;)
{
//- rjf: step 1: [read-only] try to look for current results for key's ID
@@ -1693,7 +1692,8 @@ ctrl_key_from_process_vaddr_range(CTRL_Handle process, Rng1U64 vaddr_range, B32
//- rjf: step 3: if the ID does not exist in the process' cache, then we
// need to build a node for it. if that, or if the ID is stale, then also
// request that that range is streamed.
// request that that range is streamed & wait for its result (for as long
// as we have.)
if(!id_exists || (id_exists && id_stale && !id_working))
{
B32 node_needs_stream = 0;
@@ -1737,15 +1737,15 @@ ctrl_key_from_process_vaddr_range(CTRL_Handle process, Rng1U64 vaddr_range, B32
}
}
}
if(node_needs_stream)
if(node_needs_stream) OS_MutexScopeR(process_stripe->rw_mutex)
{
if(ctrl_u2ms_enqueue_req(key, process, vaddr_range, zero_terminated, endt_us))
{
async_push_work(ctrl_mem_stream_work, .working_counter = node_working_count);
requested = 1;
os_condition_variable_wait_rw_r(process_stripe->cv, process_stripe->rw_mutex, endt_us);
id_working = 1;
}
else OS_MutexScopeR(process_stripe->rw_mutex)
else
{
for(CTRL_ProcessMemoryCacheNode *process_n = process_slot->first; process_n != 0; process_n = process_n->next)
{
@@ -1768,21 +1768,11 @@ ctrl_key_from_process_vaddr_range(CTRL_Handle process, Rng1U64 vaddr_range, B32
}
}
//- rjf: step 4: if we have no time to wait, then abort; if we submitted a
// request, but the work is done and we have no results, then abort;
// otherwise, wait on this process' stripe
if(os_now_microseconds() >= endt_us)
//- rjf: step 4: if we have no time to wait, or no results & no progress, then abort
if(os_now_microseconds() >= endt_us || !id_working)
{
break;
}
else if(!id_working)
{
break;
}
else OS_MutexScopeR(process_stripe->rw_mutex)
{
os_condition_variable_wait_rw_r(process_stripe->cv, process_stripe->rw_mutex, endt_us);
}
}
if(out_is_stale)
{