C++ (Cpp) BufferIsLocal示例

示例#1

文件： localbuf.c 项目： CraigBryan/PostgresqlFun

/*
 * WriteLocalBuffer -
 *	  writes out a local buffer (actually, just marks it dirty)
 */
void
WriteLocalBuffer(Buffer buffer, bool release)
{
	int			bufid;
	BufferDesc *bufHdr;

	Assert(BufferIsLocal(buffer));

#ifdef LBDEBUG
	fprintf(stderr, "LB WRITE %d\n", buffer);
#endif

	bufid = -(buffer + 1);

	Assert(LocalRefCount[bufid] > 0);

	bufHdr = &LocalBufferDescriptors[bufid];
	bufHdr->flags |= BM_DIRTY;

	if (release)
	{
		LocalRefCount[bufid]--;
		if (LocalRefCount[bufid] == 0 &&
			bufHdr->usage_count < BM_MAX_USAGE_COUNT)
			bufHdr->usage_count++;
		ResourceOwnerForgetBuffer(CurrentResourceOwner, buffer);
	}
}

示例#2

文件： localbuf.c 项目： Gordiychuk/postgres

/*
 * MarkLocalBufferDirty -
 *	  mark a local buffer dirty
 */
void
MarkLocalBufferDirty(Buffer buffer)
{
	int			bufid;
	BufferDesc *bufHdr;
	uint32		buf_state;

	Assert(BufferIsLocal(buffer));

#ifdef LBDEBUG
	fprintf(stderr, "LB DIRTY %d\n", buffer);
#endif

	bufid = -(buffer + 1);

	Assert(LocalRefCount[bufid] > 0);

	bufHdr = GetLocalBufferDescriptor(bufid);

	buf_state = pg_atomic_read_u32(&bufHdr->state);

	if (!(buf_state & BM_DIRTY))
		pgBufferUsage.local_blks_dirtied++;

	buf_state |= BM_DIRTY;

	pg_atomic_write_u32(&bufHdr->state, buf_state);
}

示例#3

文件： localbuf.c 项目： joshuawingfield/pgsql

/*
 * MarkLocalBufferDirty -
 *	  mark a local buffer dirty
 */
void
MarkLocalBufferDirty(Buffer buffer)
{
	int			bufid;
	BufferDesc *bufHdr;

	Assert(BufferIsLocal(buffer));

#ifdef LBDEBUG
	fprintf(stderr, "LB DIRTY %d\n", buffer);
#endif

	bufid = -(buffer + 1);

	Assert(LocalRefCount[bufid] > 0);

	bufHdr = &LocalBufferDescriptors[bufid];
	bufHdr->flags |= BM_DIRTY;
}