C++ (Cpp) SBMALLOCの例

コード例 #1

ファイル: subr_sbuf.c プロジェクト: genua/anoubis_os

/*
 * Initialize an sbuf.
 * If buf is non-NULL, it points to a static or already-allocated string
 * big enough to hold at least length characters.
 */
struct sbuf *
sbuf_new(struct sbuf *s, char *buf, int length, int flags)
{
	KASSERT(length >= 0);
	KASSERT((flags & ~SBUF_USRFLAGMSK) == 0);

	flags &= SBUF_USRFLAGMSK;
	if (s == NULL) {
		s = (struct sbuf *)SBMALLOC(sizeof *s);
		if (s == NULL)
			return (NULL);
		bzero(s, sizeof *s);
		s->s_flags = flags;
		SBUF_SETFLAG(s, SBUF_DYNSTRUCT);
	} else {
		bzero(s, sizeof *s);
		s->s_flags = flags;
	}
	s->s_size = length;
	if (buf) {
		s->s_buf = buf;
		return (s);
	}
	if (flags & SBUF_AUTOEXTEND)
		s->s_size = sbuf_extendsize(s->s_size);
	s->s_buf = (char *)SBMALLOC(s->s_size);
	if (s->s_buf == NULL) {
		if (SBUF_ISDYNSTRUCT(s))
			SBFREE(s);
		return (NULL);
	}
	SBUF_SETFLAG(s, SBUF_DYNAMIC);
	return (s);
}

コード例 #2

ファイル: vsb.c プロジェクト: ajasty-cavium/Varnish-Cache

/*
 * Initialize the internals of an vsb.
 * If buf is non-NULL, it points to a static or already-allocated string
 * big enough to hold at least length characters.
 */
static struct vsb *
VSB_newbuf(struct vsb *s, char *buf, int length, int flags)
{

	memset(s, 0, sizeof(*s));
	s->magic = VSB_MAGIC;
	s->s_flags = flags;
	s->s_size = length;
	s->s_buf = buf;

	if ((s->s_flags & VSB_AUTOEXTEND) == 0) {
		KASSERT(s->s_size > 1,
		    ("attempt to create a too small vsb"));
	}

	if (s->s_buf != NULL)
		return (s);

	if ((flags & VSB_AUTOEXTEND) != 0)
		s->s_size = VSB_extendsize(s->s_size);

	s->s_buf = SBMALLOC(s->s_size);
	if (s->s_buf == NULL)
		return (NULL);
	VSB_SETFLAG(s, VSB_DYNAMIC);
	return (s);
}

コード例 #3

ファイル: subr_sbuf.c プロジェクト: mihaicarabas/dragonfly

/*
 * Initialize the internals of an sbuf.
 * If buf is non-NULL, it points to a static or already-allocated string
 * big enough to hold at least length characters.
 */
static struct sbuf *
sbuf_newbuf(struct sbuf *s, char *buf, int length, int flags)
{

	memset(s, 0, sizeof(*s));
	s->s_flags = flags;
	s->s_size = length;
	s->s_buf = buf;

	if ((s->s_flags & SBUF_AUTOEXTEND) == 0) {
		KASSERT(s->s_size >= 0,
		    ("attempt to create a too small sbuf"));
	}

	if (s->s_buf != NULL)
		return (s);

	if ((flags & SBUF_AUTOEXTEND) != 0)
		s->s_size = sbuf_extendsize(s->s_size);

	s->s_buf = SBMALLOC(s->s_size);
	if (s->s_buf == NULL)
		return (NULL);
	SBUF_SETFLAG(s, SBUF_DYNAMIC);
	return (s);
}

コード例 #4

ファイル: subr_sbuf.c プロジェクト: DangerDexter/FreeBSD-8.0-dyntick

/*
 * Initialize an sbuf.
 * If buf is non-NULL, it points to a static or already-allocated string
 * big enough to hold at least length characters.
 */
struct sbuf *
sbuf_new(struct sbuf *s, char *buf, int length, int flags)
{

	KASSERT(length >= 0,
	    ("attempt to create an sbuf of negative length (%d)", length));
	KASSERT((flags & ~SBUF_USRFLAGMSK) == 0,
	    ("%s called with invalid flags", __func__));

	flags &= SBUF_USRFLAGMSK;
	if (s == NULL) {
		s = SBMALLOC(sizeof(*s));
		if (s == NULL)
			return (NULL);
		bzero(s, sizeof(*s));
		s->s_flags = flags;
		SBUF_SETFLAG(s, SBUF_DYNSTRUCT);
	} else {
		bzero(s, sizeof(*s));
		s->s_flags = flags;
	}
	s->s_size = length;
	if (buf) {
		s->s_buf = buf;
		return (s);
	}
	if (flags & SBUF_AUTOEXTEND)
		s->s_size = sbuf_extendsize(s->s_size);
	s->s_buf = SBMALLOC(s->s_size);
	if (s->s_buf == NULL) {
		if (SBUF_ISDYNSTRUCT(s))
			SBFREE(s);
		return (NULL);
	}
	SBUF_SETFLAG(s, SBUF_DYNAMIC);
	return (s);
}

コード例 #5

ファイル: vsb.c プロジェクト: ajasty-cavium/Varnish-Cache

/*
 * Extend an vsb.
 */
static int
VSB_extend(struct vsb *s, int addlen)
{
	char *newbuf;
	int newsize;

	if (!VSB_CANEXTEND(s))
		return (-1);
	newsize = VSB_extendsize(s->s_size + addlen);
	newbuf = SBMALLOC(newsize);
	if (newbuf == NULL)
		return (-1);
	memcpy(newbuf, s->s_buf, s->s_size);
	if (VSB_ISDYNAMIC(s))
		SBFREE(s->s_buf);
	else
		VSB_SETFLAG(s, VSB_DYNAMIC);
	s->s_buf = newbuf;
	s->s_size = newsize;
	return (0);
}

コード例 #6

ファイル: subr_sbuf.c プロジェクト: mihaicarabas/dragonfly

/*
 * Extend an sbuf.
 */
static int
sbuf_extend(struct sbuf *s, int addlen)
{
	char *newbuf;
	int newsize;

	if (!SBUF_CANEXTEND(s))
		return (-1);
	newsize = sbuf_extendsize(s->s_size + addlen);
	newbuf = SBMALLOC(newsize);
	if (newbuf == NULL)
		return (-1);
	memcpy(newbuf, s->s_buf, s->s_size);
	if (SBUF_ISDYNAMIC(s))
		SBFREE(s->s_buf);
	else
		SBUF_SETFLAG(s, SBUF_DYNAMIC);
	s->s_buf = newbuf;
	s->s_size = newsize;
	return (0);
}

コード例 #7

ファイル: vsb.c プロジェクト: ajasty-cavium/Varnish-Cache

/*
 * Initialize an vsb.
 * If buf is non-NULL, it points to a static or already-allocated string
 * big enough to hold at least length characters.
 */
struct vsb *
VSB_new(struct vsb *s, char *buf, int length, int flags)
{

	KASSERT(length >= 0,
	    ("attempt to create an vsb of negative length (%d)", length));
	KASSERT((flags & ~VSB_USRFLAGMSK) == 0,
	    ("%s called with invalid flags", __func__));

	flags &= VSB_USRFLAGMSK;
	if (s != NULL)
		return (VSB_newbuf(s, buf, length, flags));

	s = SBMALLOC(sizeof(*s));
	if (s == NULL)
		return (NULL);
	if (VSB_newbuf(s, buf, length, flags) == NULL) {
		SBFREE(s);
		return (NULL);
	}
	VSB_SETFLAG(s, VSB_DYNSTRUCT);
	return (s);
}

コード例 #8

ファイル: vsb.c プロジェクト: fgsch/varnish-cache

/*
 * Extend an vsb.
 */
static ssize_t
VSB_extend(struct vsb *s, ssize_t addlen)
{
	char *newbuf;
	ssize_t newsize;

	if (!VSB_CANEXTEND(s))
		return (-1);
	newsize = VSB_extendsize(s->s_size + addlen);
	if (VSB_ISDYNAMIC(s))
		newbuf = realloc(s->s_buf, newsize);
	else
		newbuf = SBMALLOC(newsize);
	if (newbuf == NULL)
		return (-1);
	if (!VSB_ISDYNAMIC(s)) {
		memcpy(newbuf, s->s_buf, s->s_size);
		VSB_SETFLAG(s, VSB_DYNAMIC);
	}
	s->s_buf = newbuf;
	s->s_size = newsize;
	return (0);
}