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public version of crazy benchmarking

This commit is contained in:
tTh 2024-08-15 13:43:12 +02:00
parent 1b442ece82
commit 82a7050d07
1 changed files with 35 additions and 12 deletions
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47
Lib/foo.c
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@ -20,34 +20,53 @@
\
} while (0)
#define SZPIC 7777
#define SZPIC 5777
double tthi_dtime(void);
void essai_pixcopy(void)
void essai_pixcopy(int usemacro)
{
Image_Desc *alice, *bob;
int x, y;
double T0, T1;
int x, y, foo;
double T0, T1, perpix;
long count;
alice = Image_alloc(SZPIC, SZPIC, IMAGE_RGB);
bob = Image_alloc(SZPIC, SZPIC, IMAGE_RGB);
Image_pattern_000(alice, rand());
T0 = tthi_dtime();
count = 0L;
for (y=0; y<SZPIC; y++) {
for (x=0; x<SZPIC; x++) {
Image_pixel_copy(alice, x, y, bob, x, y);
count++;
if (usemacro) {
for (y=0; y<SZPIC; y++) {
for (x=0; x<SZPIC; x++) {
PIXEL_COPY(alice, x, y, bob, x, y);
count++;
}
}
}
else {
for (y=0; y<SZPIC; y++) {
for (x=0; x<SZPIC; x++) {
Image_pixel_copy(alice, x, y, bob, x, y);
count++;
}
}
}
T1 = tthi_dtime();
fprintf(stderr, "count %ld, elapsed %g\n", count, T1-T0);
foo = Image_TGA_save("bob.tga", bob, 0);
if (foo) {
fprintf(stderr, "%s: save -> %d\n", __func__, foo);
}
perpix = (T1-T0) / (double)count;
fprintf(stderr, "%s : %10ld pixels, elapsed %9.6f seconds ==> %5.3g µs/ppix\n",
usemacro ? "macro" : "func ",
count, T1-T0, perpix);
/* end */
}
@ -56,8 +75,9 @@ fprintf(stderr, "count %ld, elapsed %g\n", count, T1-T0);
int main(int argc, char *argv[])
{
int i;
fprintf(stderr, "*** %s is running\n", argv[0]);
fprintf(stderr, "******** %s is running *********\n", argv[0]);
if (argc > 1) {
fprintf(stderr, "argument: %s\n", argv[1]);
@ -65,7 +85,10 @@ if (argc > 1) {
Image_print_sizeof_structs("foo");
}
else {
essai_pixcopy();
for (i=0; i<5; i++) {
essai_pixcopy(0);
essai_pixcopy(1);
}
}
/*