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vm: hand SIGALRM to signal pipe if not sampling

db4
Joe Groff 2011-11-08 23:37:22 -08:00
parent 97a048fdc1
commit 2e9552d98a
1 changed files with 9 additions and 5 deletions
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14
vm/os-unix.cpp
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@ -212,12 +212,16 @@ void fep_signal_handler(int signal, siginfo_t *siginfo, void *uap)
void sample_signal_handler(int signal, siginfo_t *siginfo, void *uap) void sample_signal_handler(int signal, siginfo_t *siginfo, void *uap)
{ {
factor_vm *vm = current_vm_p(); factor_vm *vm = current_vm_p();
if (vm) bool foreign_thread = false;
vm->safepoint.enqueue_samples(vm, 1, (cell)UAP_PROGRAM_COUNTER(uap), false); if (vm == NULL)
else if (thread_vms.size() == 1) { {
factor_vm *the_only_vm = thread_vms.begin()->second; foreign_thread = true;
the_only_vm->safepoint.enqueue_samples(the_only_vm, 1, (cell)UAP_PROGRAM_COUNTER(uap), true); vm = thread_vms.begin()->second;
} }
if (atomic::load(&vm->sampling_profiler_p))
vm->safepoint.enqueue_samples(vm, 1, (cell)UAP_PROGRAM_COUNTER(uap), foreign_thread);
else if (!foreign_thread)
enqueue_signal(vm, signal);
} }
void ignore_signal_handler(int signal, siginfo_t *siginfo, void *uap) void ignore_signal_handler(int signal, siginfo_t *siginfo, void *uap)