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added the errnum field to qse_pio_t

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hyung-hwan
2009-01-13 08:37:29 +00:00
parent 8d794c7c73
commit 31efbc7ecf
4 changed files with 78 additions and 21 deletions
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12
qse/lib/cmn/pio.c
View File

@ -449,23 +449,25 @@ int qse_pio_wait (qse_pio_t* pio, int flags)
if (pio->child == QSE_PIO_PID_NIL) return -1;
if (flags & QSE_PIO_NOWAIT) opt |= WNOHANG;
if (flags & QSE_PIO_NOHANG) opt |= WNOHANG;
while (1)
{
int n = QSE_WAITPID (pio->child, &status, opt);
qse_printf (QSE_T("n=%d,pio->child=%d,errno=%d,ECHILD=%d\n"), n, pio->child, errno, ECHILD);
if (n == -1)
{
if (errno == ECHILD)
{
/* most likely, the process has already been waitpid()ed on. */
/* most likely, the process has already been
* waitpid()ed on. */
/* TODO: what should we do... ? */
/* ??? TREAT AS NORMAL??? => cannot know exit code => TREAT AS ERROR but reset pio->child */
pio->child = QSE_PIO_PID_NIL;
ret = -1; /* OR ECHILD / QSE_PIO_ECHILD */
pio->errnum = QSE_PIO_ECHILD;
ret = -1;
break;
}
@ -475,7 +477,7 @@ qse_printf (QSE_T("n=%d,pio->child=%d,errno=%d,ECHILD=%d\n"), n, pio->child, err
if (n == 0)
{
/* when WNOHANG is not specified, 0 can't be returned */
QSE_ASSERT (flags & QSE_PIO_NOWAIT);
QSE_ASSERT (flags & QSE_PIO_NOHANG);
ret = -2;
/* the child process is still alive */

2
qse/lib/cmn/tio.c
View File

@ -98,7 +98,7 @@ void qse_tio_setmmgr (qse_tio_t* tio, qse_mmgr_t* mmgr)
tio->mmgr = mmgr;
}
int qse_tio_geterrnum (qse_tio_t* tio)
qse_tio_err_t qse_tio_geterrnum (qse_tio_t* tio)
{
return tio->errnum;
}