Elevate Windows production worthiness

- SQLite file locking now works on Windows
- SQLite will now use fdatasync() on non-Apple platforms
- Fix Ctrl-C handler on Windows to not crash with TLS
- Signals now work in multithreaded apps on Windows
- fcntl() will now accurately report EINVAL errors
- fcntl() now has excellent --strace logging
- Token bucket replenish now go 100x faster
- *NSYNC cancellations now work on Windows
- Support closefrom() on NetBSD

libc/calls/onntconsoleevent.c

@@ -17,25 +17,44 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/sig.internal.h"
+#include "libc/intrin/atomic.h"
 #include "libc/intrin/strace.internal.h"
 #include "libc/nexgen32e/nt2sysv.h"
 #include "libc/nt/enum/ctrlevent.h"
+#include "libc/nt/thread.h"
+#include "libc/str/str.h"
 #include "libc/sysv/consts/sicode.h"
 #include "libc/sysv/consts/sig.h"
+#include "libc/thread/tls.h"
+#include "libc/thread/tls2.h"
 
 textwindows bool32 __onntconsoleevent(uint32_t dwCtrlType) {
+  struct CosmoTib tib;
+  struct StackFrame *fr;
+
+  // win32 spawns a thread on its own just to deliver sigint
+  // TODO(jart): make signal code lockless so we can delete!
+  if (__tls_enabled && !__get_tls_win32()) {
+    bzero(&tib, sizeof(tib));
+    tib.tib_self = &tib;
+    tib.tib_self2 = &tib;
+    atomic_store_explicit(&tib.tib_tid, GetCurrentThreadId(),
+                          memory_order_relaxed);
+    __set_tls_win32(&tib);
+  }
+
   STRACE("__onntconsoleevent(%u)", dwCtrlType);
   switch (dwCtrlType) {
     case kNtCtrlCEvent:
-      __sig_add(SIGINT, SI_KERNEL);
+      __sig_add(0, SIGINT, SI_KERNEL);
       return true;
     case kNtCtrlBreakEvent:
-      __sig_add(SIGQUIT, SI_KERNEL);
+      __sig_add(0, SIGQUIT, SI_KERNEL);
       return true;
     case kNtCtrlCloseEvent:
     case kNtCtrlLogoffEvent:    // only received by services
     case kNtCtrlShutdownEvent:  // only received by services
-      __sig_add(SIGHUP, SI_KERNEL);
+      __sig_add(0, SIGHUP, SI_KERNEL);
       return true;
     default:
       return false;