Use timer queue timers instead of multimedia timers.

They appear to have been introduced in W2K; we don't care about NT 4 and
earlier NT releases any more.  The multimedia timers are deprecated in
favor of timer queue timers, and timer queue timers don't require any
extra libraries.

diff --git a/tcpdump.c b/tcpdump.c
index 1be626b218d4b1fb3c0bf43fe7943fc4cca50ee9..9fd0393f2a21a0d74253cf70410a5f802750251f 100644 (file)
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -225,9 +225,8 @@ void requestinfo(int);
 #endif
 
 #ifdef _WIN32
-    #include <MMsystem.h>
-    static UINT timer_id;
-    static void CALLBACK verbose_stats_dump(UINT, UINT, DWORD_PTR, DWORD_PTR, DWORD_PTR);
+    static HANDLE timer_handle = INVALID_HANDLE;
+    static void CALLBACK verbose_stats_dump(PVOID param, BOOLEAN timer_fired);
 #else /* _WIN32 */
   static void verbose_stats_dump(int sig);
 #endif /* _WIN32 */
@@ -2205,17 +2204,16 @@ DIAG_ON_CLANG(assign-enum)
                 */
 #ifdef _WIN32
                /*
-                * call verbose_stats_dump() each 1000 +/-100msec
+                * https://blogs.msdn.microsoft.com/oldnewthing/20151230-00/?p=92741
                 *
-                * XXX - as of XP/Server 2003, this is deprecated in
-                * favor of CreateTimerQueueTimer().  We should
-                * probably use that, instead.  (And
+                * suggests that this dates back to W2K.
                 *
-                *  https://blogs.msdn.microsoft.com/oldnewthing/20151230-00/?p=92741
-                *
-                * suggests that it dates back to W2K.)
+                * I don't know what a "long wait" is, but we'll assume
+                * that printing the stats could be a "long wait".
                 */
-               timer_id = timeSetEvent(1000, 100, verbose_stats_dump, 0, TIME_PERIODIC);
+               CreateTimerQueueTimer(&timer_handle, NULL,
+                   verbose_stats_dump, NULL, 1000, 1000
+                   WT_EXECUTEDEFAULT|WT_EXECUTELONGFUNCTION);
                setvbuf(stderr, NULL, _IONBF, 0);
 #else /* _WIN32 */
                /*
@@ -2414,9 +2412,11 @@ static void
 cleanup(int signo _U_)
 {
 #ifdef _WIN32
-       if (timer_id)
-               timeKillEvent(timer_id);
-       timer_id = 0;
+       if (timer_handle != INVALID_HANDLE) {
+               DeleteTimerQueueTimer(NULL, timer_handle, NULL);
+               CloseHandle(timer_handle);
+               timer_handle = INVALID_HANDLE;
+        }
 #else /* _WIN32 */
        struct itimerval timer;
 
@@ -2846,8 +2846,8 @@ print_packets_captured (void)
  * Called once each second in verbose mode while dumping to file
  */
 #ifdef _WIN32
-void CALLBACK verbose_stats_dump (UINT timer_id _U_, UINT msg _U_, DWORD_PTR arg _U_,
-                                 DWORD_PTR dw1 _U_, DWORD_PTR dw2 _U_)
+static void CALLBACK verbose_stats_dump(PVOID param _U_,
+    BOOLEAN timer_fired _U_)
 {
        print_packets_captured();
 }