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-rw-r--r--ANDROID_3.4.5/tools/perf/bench/mem-memcpy.c303
1 files changed, 0 insertions, 303 deletions
diff --git a/ANDROID_3.4.5/tools/perf/bench/mem-memcpy.c b/ANDROID_3.4.5/tools/perf/bench/mem-memcpy.c
deleted file mode 100644
index 71557225..00000000
--- a/ANDROID_3.4.5/tools/perf/bench/mem-memcpy.c
+++ /dev/null
@@ -1,303 +0,0 @@
-/*
- * mem-memcpy.c
- *
- * memcpy: Simple memory copy in various ways
- *
- * Written by Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
- */
-
-#include "../perf.h"
-#include "../util/util.h"
-#include "../util/parse-options.h"
-#include "../util/header.h"
-#include "bench.h"
-#include "mem-memcpy-arch.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/time.h>
-#include <errno.h>
-
-#define K 1024
-
-static const char *length_str = "1MB";
-static const char *routine = "default";
-static int iterations = 1;
-static bool use_clock;
-static int clock_fd;
-static bool only_prefault;
-static bool no_prefault;
-
-static const struct option options[] = {
- OPT_STRING('l', "length", &length_str, "1MB",
- "Specify length of memory to copy. "
- "available unit: B, MB, GB (upper and lower)"),
- OPT_STRING('r', "routine", &routine, "default",
- "Specify routine to copy"),
- OPT_INTEGER('i', "iterations", &iterations,
- "repeat memcpy() invocation this number of times"),
- OPT_BOOLEAN('c', "clock", &use_clock,
- "Use CPU clock for measuring"),
- OPT_BOOLEAN('o', "only-prefault", &only_prefault,
- "Show only the result with page faults before memcpy()"),
- OPT_BOOLEAN('n', "no-prefault", &no_prefault,
- "Show only the result without page faults before memcpy()"),
- OPT_END()
-};
-
-typedef void *(*memcpy_t)(void *, const void *, size_t);
-
-struct routine {
- const char *name;
- const char *desc;
- memcpy_t fn;
-};
-
-struct routine routines[] = {
- { "default",
- "Default memcpy() provided by glibc",
- memcpy },
-#ifdef ARCH_X86_64
-
-#define MEMCPY_FN(fn, name, desc) { name, desc, fn },
-#include "mem-memcpy-x86-64-asm-def.h"
-#undef MEMCPY_FN
-
-#endif
-
- { NULL,
- NULL,
- NULL }
-};
-
-static const char * const bench_mem_memcpy_usage[] = {
- "perf bench mem memcpy <options>",
- NULL
-};
-
-static struct perf_event_attr clock_attr = {
- .type = PERF_TYPE_HARDWARE,
- .config = PERF_COUNT_HW_CPU_CYCLES
-};
-
-static void init_clock(void)
-{
- clock_fd = sys_perf_event_open(&clock_attr, getpid(), -1, -1, 0);
-
- if (clock_fd < 0 && errno == ENOSYS)
- die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
- else
- BUG_ON(clock_fd < 0);
-}
-
-static u64 get_clock(void)
-{
- int ret;
- u64 clk;
-
- ret = read(clock_fd, &clk, sizeof(u64));
- BUG_ON(ret != sizeof(u64));
-
- return clk;
-}
-
-static double timeval2double(struct timeval *ts)
-{
- return (double)ts->tv_sec +
- (double)ts->tv_usec / (double)1000000;
-}
-
-static void alloc_mem(void **dst, void **src, size_t length)
-{
- *dst = zalloc(length);
- if (!dst)
- die("memory allocation failed - maybe length is too large?\n");
-
- *src = zalloc(length);
- if (!src)
- die("memory allocation failed - maybe length is too large?\n");
-}
-
-static u64 do_memcpy_clock(memcpy_t fn, size_t len, bool prefault)
-{
- u64 clock_start = 0ULL, clock_end = 0ULL;
- void *src = NULL, *dst = NULL;
- int i;
-
- alloc_mem(&src, &dst, len);
-
- if (prefault)
- fn(dst, src, len);
-
- clock_start = get_clock();
- for (i = 0; i < iterations; ++i)
- fn(dst, src, len);
- clock_end = get_clock();
-
- free(src);
- free(dst);
- return clock_end - clock_start;
-}
-
-static double do_memcpy_gettimeofday(memcpy_t fn, size_t len, bool prefault)
-{
- struct timeval tv_start, tv_end, tv_diff;
- void *src = NULL, *dst = NULL;
- int i;
-
- alloc_mem(&src, &dst, len);
-
- if (prefault)
- fn(dst, src, len);
-
- BUG_ON(gettimeofday(&tv_start, NULL));
- for (i = 0; i < iterations; ++i)
- fn(dst, src, len);
- BUG_ON(gettimeofday(&tv_end, NULL));
-
- timersub(&tv_end, &tv_start, &tv_diff);
-
- free(src);
- free(dst);
- return (double)((double)len / timeval2double(&tv_diff));
-}
-
-#define pf (no_prefault ? 0 : 1)
-
-#define print_bps(x) do { \
- if (x < K) \
- printf(" %14lf B/Sec", x); \
- else if (x < K * K) \
- printf(" %14lfd KB/Sec", x / K); \
- else if (x < K * K * K) \
- printf(" %14lf MB/Sec", x / K / K); \
- else \
- printf(" %14lf GB/Sec", x / K / K / K); \
- } while (0)
-
-int bench_mem_memcpy(int argc, const char **argv,
- const char *prefix __used)
-{
- int i;
- size_t len;
- double result_bps[2];
- u64 result_clock[2];
-
- argc = parse_options(argc, argv, options,
- bench_mem_memcpy_usage, 0);
-
- if (use_clock)
- init_clock();
-
- len = (size_t)perf_atoll((char *)length_str);
-
- result_clock[0] = result_clock[1] = 0ULL;
- result_bps[0] = result_bps[1] = 0.0;
-
- if ((s64)len <= 0) {
- fprintf(stderr, "Invalid length:%s\n", length_str);
- return 1;
- }
-
- /* same to without specifying either of prefault and no-prefault */
- if (only_prefault && no_prefault)
- only_prefault = no_prefault = false;
-
- for (i = 0; routines[i].name; i++) {
- if (!strcmp(routines[i].name, routine))
- break;
- }
- if (!routines[i].name) {
- printf("Unknown routine:%s\n", routine);
- printf("Available routines...\n");
- for (i = 0; routines[i].name; i++) {
- printf("\t%s ... %s\n",
- routines[i].name, routines[i].desc);
- }
- return 1;
- }
-
- if (bench_format == BENCH_FORMAT_DEFAULT)
- printf("# Copying %s Bytes ...\n\n", length_str);
-
- if (!only_prefault && !no_prefault) {
- /* show both of results */
- if (use_clock) {
- result_clock[0] =
- do_memcpy_clock(routines[i].fn, len, false);
- result_clock[1] =
- do_memcpy_clock(routines[i].fn, len, true);
- } else {
- result_bps[0] =
- do_memcpy_gettimeofday(routines[i].fn,
- len, false);
- result_bps[1] =
- do_memcpy_gettimeofday(routines[i].fn,
- len, true);
- }
- } else {
- if (use_clock) {
- result_clock[pf] =
- do_memcpy_clock(routines[i].fn,
- len, only_prefault);
- } else {
- result_bps[pf] =
- do_memcpy_gettimeofday(routines[i].fn,
- len, only_prefault);
- }
- }
-
- switch (bench_format) {
- case BENCH_FORMAT_DEFAULT:
- if (!only_prefault && !no_prefault) {
- if (use_clock) {
- printf(" %14lf Clock/Byte\n",
- (double)result_clock[0]
- / (double)len);
- printf(" %14lf Clock/Byte (with prefault)\n",
- (double)result_clock[1]
- / (double)len);
- } else {
- print_bps(result_bps[0]);
- printf("\n");
- print_bps(result_bps[1]);
- printf(" (with prefault)\n");
- }
- } else {
- if (use_clock) {
- printf(" %14lf Clock/Byte",
- (double)result_clock[pf]
- / (double)len);
- } else
- print_bps(result_bps[pf]);
-
- printf("%s\n", only_prefault ? " (with prefault)" : "");
- }
- break;
- case BENCH_FORMAT_SIMPLE:
- if (!only_prefault && !no_prefault) {
- if (use_clock) {
- printf("%lf %lf\n",
- (double)result_clock[0] / (double)len,
- (double)result_clock[1] / (double)len);
- } else {
- printf("%lf %lf\n",
- result_bps[0], result_bps[1]);
- }
- } else {
- if (use_clock) {
- printf("%lf\n", (double)result_clock[pf]
- / (double)len);
- } else
- printf("%lf\n", result_bps[pf]);
- }
- break;
- default:
- /* reaching this means there's some disaster: */
- die("unknown format: %d\n", bench_format);
- break;
- }
-
- return 0;
-}