Adding upstream version 1.4.3+ds.upstream/1.4.3+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 205 insertions, 0 deletions

diff --git a/microbench/util.c b/microbench/util.c
new file mode 100644
index 0000000..2ecd4a3
--- /dev/null
+++ b/microbench/util.c
@@ -0,0 +1,205 @@
+/* FLAC - Free Lossless Audio Codec
+ * Copyright (C) 2015-2023  Xiph.Org Foundation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the Xiph.org Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <stdlib.h>
+#include "util.h"
+
+#if defined _WIN32
+
+#include <windows.h>
+
+static double
+counter_diff (const LARGE_INTEGER * start, const LARGE_INTEGER * end)
+{
+	LARGE_INTEGER diff, freq;
+
+	QueryPerformanceFrequency(&freq);
+	diff.QuadPart = end->QuadPart - start->QuadPart;
+
+	return (double)diff.QuadPart/(double)freq.QuadPart;
+}
+
+double
+benchmark_function (void (*testfunc) (void), unsigned count)
+{
+	LARGE_INTEGER start, end;
+	unsigned k;
+
+	QueryPerformanceCounter (&start) ;
+
+	for (k = 0 ; k < count ; k++)
+		testfunc();
+
+	QueryPerformanceCounter (&end) ;
+
+	return counter_diff (&start, &end) / count ;
+} /* benchmark_function */
+
+#elif defined FLAC__SYS_DARWIN
+
+#include <mach/mach_time.h>
+
+static double
+counter_diff (const uint64_t * start, const uint64_t * end)
+{
+	mach_timebase_info_data_t t_info;
+	mach_timebase_info(&t_info);
+	uint64_t duration = *end - *start;
+
+	return duration * ((double)t_info.numer/(double)t_info.denom);
+}
+
+double
+benchmark_function (void (*testfunc) (void), unsigned count)
+{
+	uint64_t start, end;
+	unsigned k;
+
+	start = mach_absolute_time();
+
+	for (k = 0 ; k < count ; k++)
+		testfunc();
+
+	end = mach_absolute_time();
+
+	return counter_diff (&start, &end) / count ;
+} /* benchmark_function */
+
+#elif defined HAVE_CLOCK_GETTIME
+
+#include <time.h>
+#include <sys/time.h>
+
+static double
+timespec_diff (const struct timespec * start, const struct timespec * end)
+{	struct timespec diff;
+
+	if (end->tv_nsec - start->tv_nsec < 0)
+	{	diff.tv_sec = end->tv_sec - start->tv_sec - 1 ;
+		diff.tv_nsec = 1000000000 + end->tv_nsec - start->tv_nsec ;
+		}
+	else
+	{	diff.tv_sec = end->tv_sec - start->tv_sec ;
+		diff.tv_nsec = end->tv_nsec-start->tv_nsec ;
+		} ;
+
+	return diff.tv_sec + 1e-9 * diff.tv_nsec ;
+}
+
+double
+benchmark_function (void (*testfunc) (void), unsigned count)
+{	struct timespec start, end;
+	unsigned k ;
+
+	clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &start) ;
+
+	for (k = 0 ; k < count ; k++)
+		testfunc () ;
+
+	clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &end) ;
+
+	return timespec_diff (&start, &end) / count ;
+} /* benchmark_function */
+
+#else
+
+#include <time.h>
+#include <sys/time.h>
+
+static double
+timeval_diff (const struct timeval * start, const struct timeval * end)
+{       struct timeval diff;
+
+        if (end->tv_usec - start->tv_usec < 0)
+        {       diff.tv_sec = end->tv_sec - start->tv_sec - 1 ;
+                diff.tv_usec = 1000000 + end->tv_usec - start->tv_usec ;
+                }
+        else
+        {       diff.tv_sec = end->tv_sec - start->tv_sec ;
+                diff.tv_usec = end->tv_usec-start->tv_usec ;
+                } ;
+
+        return diff.tv_sec + 1e-6 * diff.tv_usec ;
+}
+
+double
+benchmark_function (void (*testfunc) (void), unsigned count)
+{	struct timeval start, end;
+	unsigned k ;
+
+	gettimeofday(&start, NULL);
+
+	for (k = 0 ; k < count ; k++)
+		testfunc () ;
+
+	gettimeofday(&end, NULL);
+
+	return timeval_diff (&start, &end) / count ;
+} /* benchmark_function */
+
+#endif
+
+static int
+double_cmp (const void * a, const void * b)
+{	const double * pa = (double *) a ;
+	const double * pb = (double *) b ;
+	return pa [0] < pb [0] ;
+} /* double_cmp */
+
+void
+benchmark_stats (bench_stats * stats)
+{	double sum, times [stats->run_count] ;
+	unsigned k ;
+
+	for (k = 0 ; k < stats->run_count ; k++)
+		times [k] = benchmark_function (stats->testfunc, stats->loop_count) ;
+
+	qsort (times, stats->run_count, sizeof (times [0]), double_cmp) ;
+
+	sum = 0.0 ;
+	stats->min_time = stats->max_time = times [0] ;
+	for (k = 0 ; k < stats->run_count ; k++)
+	{	stats->min_time = stats->min_time < times [k] ? stats->min_time : times [k] ;
+		stats->max_time = stats->max_time > times [k] ? stats->max_time : times [k] ;
+		sum += times [k] ;
+		}
+	stats->mean_time = sum / stats->run_count ;
+	if (stats->run_count & 1)
+		stats->median_time = times [(stats->run_count + 1) / 2] ;
+	else
+		stats->median_time = 0.5 * (times [stats->run_count / 2] + times [(stats->run_count / 2) + 1]) ;
+
+	return ;
+} /* benchmark_stats */