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Make improvements to locking

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This change makes pthread_mutex_lock() as fast as _spinlock() by
default. Thread instability issues on NetBSD have been resolved.
Improvements made to gdtoa thread code. Crash reporting will now
synchronize between threads in a slightly better way.
This commit is contained in:
Justine Tunney 2022-06-19 01:13:03 -07:00
parent 25041b8026
commit d5312b60f7
60 changed files with 890 additions and 629 deletions
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7
libc/log/backtrace3.c
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@ -57,13 +57,6 @@ noinstrument noasan int PrintBacktraceUsingSymbols(int fd,
garbage = weaken(__garbage);
gi = garbage ? garbage->i : 0;
for (i = 0, frame = bp; frame; frame = frame->next) {
__mmi_lock();
ok = IsValidStackFramePointer(frame);
__mmi_unlock();
if (!ok) {
kprintf("%p corrupt frame pointer\n", frame);
break;
}
if (++i == LIMIT) {
kprintf("<truncated backtrace>\n");
break;