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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /media/ffvpx/libavutil/timer.h
parentInitial commit. (diff)
downloadfirefox-esr-upstream.tar.xz
firefox-esr-upstream.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--media/ffvpx/libavutil/timer.h156
1 files changed, 156 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/timer.h b/media/ffvpx/libavutil/timer.h
new file mode 100644
index 0000000000..d3db5a27ef
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+++ b/media/ffvpx/libavutil/timer.h
@@ -0,0 +1,156 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * high precision timer, useful to profile code
+ */
+
+#ifndef AVUTIL_TIMER_H
+#define AVUTIL_TIMER_H
+
+#include "config.h"
+
+#if CONFIG_LINUX_PERF
+# ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+# endif
+# include <unistd.h> // read(3)
+# include <sys/ioctl.h>
+# include <asm/unistd.h>
+# include <linux/perf_event.h>
+#endif
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#if CONFIG_MACOS_KPERF
+#include "macos_kperf.h"
+#elif HAVE_MACH_ABSOLUTE_TIME
+#include <mach/mach_time.h>
+#endif
+
+#include "common.h"
+#include "log.h"
+
+#if ARCH_AARCH64
+# include "aarch64/timer.h"
+#elif ARCH_ARM
+# include "arm/timer.h"
+#elif ARCH_PPC
+# include "ppc/timer.h"
+#elif ARCH_RISCV
+# include "riscv/timer.h"
+#elif ARCH_X86
+# include "x86/timer.h"
+#endif
+
+#if !defined(AV_READ_TIME)
+# if HAVE_GETHRTIME
+# define AV_READ_TIME gethrtime
+# elif HAVE_MACH_ABSOLUTE_TIME
+# define AV_READ_TIME mach_absolute_time
+# endif
+#endif
+
+#ifndef FF_TIMER_UNITS
+# define FF_TIMER_UNITS "UNITS"
+#endif
+
+#define TIMER_REPORT(id, tdiff) \
+ { \
+ static uint64_t tsum = 0; \
+ static int tcount = 0; \
+ static int tskip_count = 0; \
+ static int thistogram[32] = {0}; \
+ thistogram[av_log2(tdiff)]++; \
+ if (tcount < 2 || \
+ (tdiff) < 8 * tsum / tcount || \
+ (tdiff) < 2000) { \
+ tsum += (tdiff); \
+ tcount++; \
+ } else \
+ tskip_count++; \
+ if (((tcount + tskip_count) & (tcount + tskip_count - 1)) == 0) { \
+ int i; \
+ av_log(NULL, AV_LOG_ERROR, \
+ "%7" PRIu64 " " FF_TIMER_UNITS " in %s,%8d runs,%7d skips",\
+ tsum * 10 / tcount, id, tcount, tskip_count); \
+ for (i = 0; i < 32; i++) \
+ av_log(NULL, AV_LOG_VERBOSE, " %2d", av_log2(2*thistogram[i]));\
+ av_log(NULL, AV_LOG_ERROR, "\n"); \
+ } \
+ }
+
+#if CONFIG_LINUX_PERF
+
+#define START_TIMER \
+ static int linux_perf_fd; \
+ uint64_t tperf; \
+ if (!linux_perf_fd) { \
+ struct perf_event_attr attr = { \
+ .type = PERF_TYPE_HARDWARE, \
+ .size = sizeof(struct perf_event_attr), \
+ .config = PERF_COUNT_HW_CPU_CYCLES, \
+ .disabled = 1, \
+ .exclude_kernel = 1, \
+ .exclude_hv = 1, \
+ }; \
+ linux_perf_fd = syscall(__NR_perf_event_open, &attr, \
+ 0, -1, -1, 0); \
+ } \
+ if (linux_perf_fd == -1) { \
+ av_log(NULL, AV_LOG_ERROR, "perf_event_open failed: %s\n", \
+ av_err2str(AVERROR(errno))); \
+ } else { \
+ ioctl(linux_perf_fd, PERF_EVENT_IOC_RESET, 0); \
+ ioctl(linux_perf_fd, PERF_EVENT_IOC_ENABLE, 0); \
+ }
+
+#define STOP_TIMER(id) \
+ ioctl(linux_perf_fd, PERF_EVENT_IOC_DISABLE, 0); \
+ read(linux_perf_fd, &tperf, sizeof(tperf)); \
+ TIMER_REPORT(id, tperf)
+
+#elif CONFIG_MACOS_KPERF
+
+#define START_TIMER \
+ uint64_t tperf; \
+ ff_kperf_init(); \
+ tperf = ff_kperf_cycles();
+
+#define STOP_TIMER(id) \
+ TIMER_REPORT(id, ff_kperf_cycles() - tperf);
+
+#elif defined(AV_READ_TIME)
+#define START_TIMER \
+ uint64_t tend; \
+ uint64_t tstart = AV_READ_TIME(); \
+
+#define STOP_TIMER(id) \
+ tend = AV_READ_TIME(); \
+ TIMER_REPORT(id, tend - tstart)
+#else
+#define START_TIMER
+#define STOP_TIMER(id) { }
+#endif
+
+#endif /* AVUTIL_TIMER_H */