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Memory test function now less boring thanks to screen-wide progress bar.

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This commit is contained in:
antirez 2012-03-16 21:19:53 +01:00
parent 54e0fa1c27
commit fb068dc91d
1 changed files with 48 additions and 5 deletions
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53
src/memtest.c
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@ -4,6 +4,8 @@
#include <assert.h>
#include <limits.h>
#include <errno.h>
#include <termios.h>
#include <sys/ioctl.h>
#if (ULONG_MAX == 4294967295UL)
#define MEMTEST_32BIT
@ -13,6 +15,37 @@
#error "ULONG_MAX value not supported."
#endif
static struct winsize ws;
size_t progress_printed; /* Printed chars in screen-wide progress bar. */
size_t progress_full; /* How many chars to write to fill the progress bar. */
void memtest_progress_start(char *title, int pass) {
int j;
printf("\x1b[H\x1b[2J"); /* Cursor home, clear screen. */
/* Fill with dots. */
for (j = 0; j < ws.ws_col*ws.ws_row; j++) printf(".");
printf("\x1b[H\x1b[2K"); /* Cursor home, clear current line. */
printf("%s [%d]\n", title, pass); /* Print title. */
progress_printed = 0;
progress_full = ws.ws_col*(ws.ws_row-1);
fflush(stdout);
}
void memtest_progress_end(void) {
printf("\x1b[H\x1b[2J"); /* Cursor home, clear screen. */
}
void memtest_progress_step(size_t curr, size_t size, char c) {
size_t chars = (curr*progress_full)/size, j;
for (j = 0; j < chars-progress_printed; j++) {
printf("%c",c);
progress_printed++;
}
fflush(stdout);
}
/* Fill words stepping a single page at every write, so we continue to
* touch all the pages in the smallest amount of time reducing the
* effectiveness of caches, and making it hard for the OS to transfer
@ -39,6 +72,8 @@ void memtest_fill(unsigned long *l, size_t bytes) {
#endif
l1 += step;
l2 += step;
if ((w & 0xffff) == 0)
memtest_progress_step(w+iwords*off,words,'+');
}
}
}
@ -58,13 +93,14 @@ void memtest_compare(unsigned long *l, size_t bytes) {
}
l1 ++;
l2 ++;
if ((w & 0xffff) == 0) memtest_progress_step(w,words,'=');
}
}
void memtest_test(size_t megabytes, int passes) {
size_t bytes = megabytes*1024*1024;
unsigned long *m = malloc(bytes);
int pass = 0;
int pass = 0, j;
if (m == NULL) {
fprintf(stderr,"Unable to allocate %zu megabytes: %s",
@ -73,15 +109,22 @@ void memtest_test(size_t megabytes, int passes) {
}
while (pass != passes) {
pass++;
printf("PASS %d... ", pass);
fflush(stdout);
memtest_progress_start("Random fill",pass);
memtest_fill(m,bytes);
memtest_compare(m,bytes);
printf("ok\n");
memtest_progress_end();
for (j = 0; j < 4; j++) {
memtest_progress_start("Compare",pass);
memtest_compare(m,bytes);
memtest_progress_end();
}
}
}
void memtest(size_t megabytes, int passes) {
if (ioctl(1, TIOCGWINSZ, &ws) == -1) {
ws.ws_col = 80;
ws.ws_row = 20;
}
memtest_test(megabytes,passes);
printf("\nYour memory passed this test.\n");
printf("Please if you are stil in doubt use the following two tools:\n");