Improve locks and signals

- Introduce fast spinlock API
- Double rand64() perf w/ spinlock
- Improve raise() on New Technology
- Support gettid() across platforms
- Implement SA_NODEFER on New Technology
- Move the lock intrinsics into LIBC_INTRIN
- Make SIGTRAP recoverable on New Technology
- Block SIGCHLD in wait4() on New Technology
- Add threading prototypes for XNU and FreeBSD
- Rewrite abort() fixing its minor bugs on XNU/NT
- Shave down a lot of the content in libc/bits/bits.h
- Let signal handlers modify CPU registers on New Technology

tool/plinko/lib/plinko.c

@@ -34,6 +34,7 @@
 #include "libc/sysv/consts/o.h"
 #include "libc/sysv/consts/prot.h"
 #include "libc/sysv/consts/sig.h"
+#include "libc/time/clockstonanos.internal.h"
 #include "third_party/getopt/getopt.h"
 #include "tool/build/lib/case.h"
 #include "tool/plinko/lib/char.h"
@@ -45,7 +46,6 @@
 #include "tool/plinko/lib/print.h"
 #include "tool/plinko/lib/printf.h"
 #include "tool/plinko/lib/stack.h"
-#include "tool/plinko/lib/time.h"
 #include "tool/plinko/lib/trace.h"
 #include "tool/plinko/lib/tree.h"
 

tool/plinko/lib/printf.c

@@ -20,11 +20,11 @@
 #include "libc/nexgen32e/rdtsc.h"
 #include "libc/runtime/runtime.h"
 #include "libc/str/str.h"
+#include "libc/time/clockstonanos.internal.h"
 #include "tool/plinko/lib/char.h"
 #include "tool/plinko/lib/plinko.h"
 #include "tool/plinko/lib/print.h"
 #include "tool/plinko/lib/printf.h"
-#include "tool/plinko/lib/time.h"
 
 static inline long GetVarInt(va_list va, signed char t) {
   if (t <= 0) return va_arg(va, int);

tool/plinko/lib/time.h

@@ -1,15 +0,0 @@
-#ifndef COSMOPOLITAN_TOOL_PLINKO_LIB_TIME_H_
-#define COSMOPOLITAN_TOOL_PLINKO_LIB_TIME_H_
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
-COSMOPOLITAN_C_START_
-
-static inline uint64_t ClocksToNanos(uint64_t x, uint64_t y) {
-  // approximation of round(x*.323018) which is usually
-  // the ratio between inva rdtsc ticks and nanoseconds
-  uint128_t difference = x - y;
-  return (difference * 338709) >> 20;
-}
-
-COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
-#endif /* COSMOPOLITAN_TOOL_PLINKO_LIB_TIME_H_ */