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Fix hang at startup. #78

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Fix hang at startup. #78

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af26372
Fix hang at startup.
Jun 24, 2026
a9352ac
Merge branch 'qualcomm:main' into sidneym/start-hang
SidManning Jun 24, 2026
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9 changes: 8 additions & 1 deletion systemc-components/common/include/qkmulti-quantum.h
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Original file line number Diff line number Diff line change
Expand Up @@ -20,8 +20,15 @@ class tlm_quantumkeeper_multi_quantum : public tlm_quantumkeeper_multithread
sc_core::sc_time quantum = tlm_utils::tlm_quantumkeeper::get_global_quantum();
sc_core::sc_time next_quantum_boundary = sc_core::sc_time_stamp() + quantum;
sc_core::sc_time now = get_current_time();
if (next_quantum_boundary >= now) {
if (now < next_quantum_boundary) {
return next_quantum_boundary - now;
} else if (now == next_quantum_boundary) {
// At the exact boundary: the CPU has used its quantum but hasn't
// exceeded it. Return a minimal non-zero value so sync() doesn't
// block. The timehandler will advance the kernel on the next delta
// cycle; blocking here risks a deadlock when sc_suspend_all()
// prevents next_time() from seeing the scheduled tick event.
return sc_core::sc_time(1, sc_core::SC_PS);
} else {
return sc_core::SC_ZERO_TIME;
}
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