From ba1680a06ebc5fe27ad0a63b66dd4edea1481d76 Mon Sep 17 00:00:00 2001
From: Scott Theisen <scott.the.elm@gmail.com>
Date: Fri, 14 Jun 2024 03:27:20 -0400
Subject: [PATCH] mythmiscutil.h: remove unused rdtsc()

This may have been for benchmarking the filters removed in 2019
in ead8718de6299489f62fdde0174fd155465490d8.
---
 .../development/tsc-calibrate/tsc-calibrate.c | 41 -------------------
 mythtv/libs/libmythbase/mythmiscutil.h        | 29 -------------
 2 files changed, 70 deletions(-)
 delete mode 100644 mythtv/contrib/development/tsc-calibrate/tsc-calibrate.c

diff --git a/mythtv/contrib/development/tsc-calibrate/tsc-calibrate.c b/mythtv/contrib/development/tsc-calibrate/tsc-calibrate.c
deleted file mode 100644
index e0e99e4b554..00000000000
--- a/mythtv/contrib/development/tsc-calibrate/tsc-calibrate.c
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Calibration program for TSC filter benchmarking
- * See mythtv/filters/README for more information
- * compile with gcc -o tsc-calibrate tsc-calibrate.c
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/time.h>
-#include <unistd.h>
-#define TEST_DELAY 16
-
-int main (int argc, char **argv) {
-    unsigned long long t1, t2;
-    unsigned int t1l, t2l, t1h, t2h;
-    struct timeval to = { 0, 0 };
-    int delay;
-
-    if ( argc<2 || (delay = atoi(argv[1])) < 1 )
-    {
-        fprintf (stderr, 
-                "\nUsage:\n\n"
-                "%s <delay>\n\n"
-                "Specify a delay in seconds to calibrate.  A longer delay will provide a more\n"
-                "accurate result.  8-32 seconds should be sufficient for most purposes.  Define\n"
-                "TIME_FILTER, define TF_TYPE as TSC, and define TF_TSC_TICKS as the reported\n"
-                "value when building filters in order to use TSC benchmarks reported in frames\n"
-                "per second instead of ticks per frame.\n\n",
-                argv[0]);
-        exit (1);
-    }
-
-    to.tv_sec = delay;
-    asm ("rdtsc" :"=a" (t1l), "=d" (t1h));
-    select (0,0,0,0, &to);
-    asm ("rdtsc" :"=a" (t2l), "=d" (t2h));
-    t1 = t1l + ((unsigned long long)t1h<<32);
-    t2 = t2l + ((unsigned long long)t2h<<32);
-    printf ("TF_TSC_TICKS for this system: %llu\n", (t2-t1+delay/2)/delay);
-}
diff --git a/mythtv/libs/libmythbase/mythmiscutil.h b/mythtv/libs/libmythbase/mythmiscutil.h
index b52d32896bc..f65691fcb1e 100644
--- a/mythtv/libs/libmythbase/mythmiscutil.h
+++ b/mythtv/libs/libmythbase/mythmiscutil.h
@@ -59,33 +59,4 @@ MBASE_PUBLIC bool MythRemoveDirectory(QDir &aDir);
 
 MBASE_PUBLIC void setHttpProxy(void);
 
-// CPU Tick timing function
-#ifdef MMX
-#ifdef _WIN32
-#include "compat.h"
-inline void rdtsc(uint64_t &x)
-{
-    QueryPerformanceCounter((LARGE_INTEGER*)(&x));
-}
-#else
-struct timing_ab_t {
-    uint a;
-    uint b;
-};
-inline void rdtsc(uint64_t &x)
-{
-    auto &y = (timing_ab_t&) x;
-    asm("rdtsc \n"
-        "mov %%eax, %0 \n"
-        "mov %%edx, %1 \n"
-        :
-        : "m"(y.a), "m"(y.b)
-        : "%eax", "%edx");
-}
-#endif
-
-#else // if !MMX
-inline void rdtsc(uint64_t &x) { x = 0ULL; }
-#endif // !MMX
-
 #endif // MYTHMISCUTIL_H_