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common: Update t-exechelp to write/read smaller chunks.

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* common/t-exechelp.c (run_server): Use syshd.  Write with 4K buffer.
(test_pipe_stream): Read with 4K buffer.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2023-06-09 11:25:17 +09:00
parent 1b0ce9918c
commit 5170c366ee
No known key found for this signature in database
GPG Key ID: 640114AF89DE6054
1 changed files with 57 additions and 8 deletions
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65
common/t-exechelp.c
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@ -172,6 +172,7 @@ test_close_all_fds (void)
#endif
static char buff12k[1024*12];
static char buff4k[1024*4];
static void
run_server (void)
@ -181,8 +182,19 @@ run_server (void)
char *p;
unsigned int len;
int ret;
es_syshd_t syshd;
size_t n;
off_t o;
fp = es_fdopen_nc (1, "w");
#ifdef HAVE_W32_SYSTEM
syshd.type = ES_SYSHD_HANDLE;
syshd.u.handle = (HANDLE)_get_osfhandle (1);
#else
syshd.type = ES_SYSHD_FD;
syshd.u.fd = 1;
#endif
fp = es_sysopen_nc (&syshd, "w");
if (fp == NULL)
{
fprintf (stderr, "es_fdopen failed\n");
@ -206,12 +218,31 @@ run_server (void)
exit (1);
}
ret = es_write (fp, buff12k, sizeof (buff12k), NULL);
if (ret)
es_fflush (fp);
o = 0;
n = len;
while (1)
{
fprintf (stderr, "es_write (2) failed\n");
exit (1);
size_t n0, n1;
n0 = n > 4096 ? 4096 : n;
memcpy (buff4k, buff12k + o, n0);
ret = es_write (fp, buff4k, n0, &n1);
if (ret || n0 != n1)
{
fprintf (stderr, "es_write (2) failed\n");
exit (1);
}
o += n0;
n -= n0;
if (n == 0)
break;
}
es_fclose (fp);
exit (0);
}
@ -226,6 +257,7 @@ test_pipe_stream (const char *pgmname)
const char *argv[2];
unsigned int len;
size_t n;
off_t o;
int ret;
argv[0] = "--server";
@ -249,10 +281,27 @@ test_pipe_stream (const char *pgmname)
fprintf (stderr, "es_read (1) failed\n");
exit (1);
}
ret = es_read (outfp, buff12k, sizeof (buff12k), &n);
if (ret || n != sizeof (buff12k))
o = 0;
while (1)
{
fprintf (stderr, "es_read (2) failed\n");
if (es_feof (outfp))
break;
ret = es_read (outfp, buff4k, sizeof (buff4k), &n);
if (ret)
{
fprintf (stderr, "es_read (2) failed\n");
exit (1);
}
memcpy (buff12k + o, buff4k, n);
o += n;
}
if (o != sizeof (buff12k))
{
fprintf (stderr, "received data with wrong length %d\n", (int)o);
exit (1);
}
es_fclose (outfp);