C++ (Cpp) cfs_atomic_dec_and_test Examples

Example #1

File: gss_pipefs.c Project: ORNL-TechInt/lustre

/*
 * caller must hold spinlock
 */
static
void ctx_unhash_pf(struct ptlrpc_cli_ctx *ctx, cfs_hlist_head_t *freelist)
{
        LASSERT_SPIN_LOCKED(&ctx->cc_sec->ps_lock);
        LASSERT(cfs_atomic_read(&ctx->cc_refcount) > 0);
	LASSERT(test_bit(PTLRPC_CTX_CACHED_BIT, &ctx->cc_flags));
        LASSERT(!cfs_hlist_unhashed(&ctx->cc_cache));

	clear_bit(PTLRPC_CTX_CACHED_BIT, &ctx->cc_flags);

        if (cfs_atomic_dec_and_test(&ctx->cc_refcount)) {
                __cfs_hlist_del(&ctx->cc_cache);
                cfs_hlist_add_head(&ctx->cc_cache, freelist);
        } else {
                cfs_hlist_del_init(&ctx->cc_cache);
        }
}

Example #2

File: gss_pipefs.c Project: ORNL-TechInt/lustre

static
void gss_cli_ctx_die_pf(struct ptlrpc_cli_ctx *ctx, int grace)
{
	LASSERT(ctx->cc_sec);
	LASSERT(cfs_atomic_read(&ctx->cc_refcount) > 0);

	cli_ctx_expire(ctx);

	spin_lock(&ctx->cc_sec->ps_lock);

	if (test_and_clear_bit(PTLRPC_CTX_CACHED_BIT, &ctx->cc_flags)) {
		LASSERT(!cfs_hlist_unhashed(&ctx->cc_cache));
		LASSERT(cfs_atomic_read(&ctx->cc_refcount) > 1);

		cfs_hlist_del_init(&ctx->cc_cache);
		if (cfs_atomic_dec_and_test(&ctx->cc_refcount))
			LBUG();
	}

	spin_unlock(&ctx->cc_sec->ps_lock);
}

Example #3

File: llog.c Project: Lezval/lustre

void llog_handle_put(struct llog_handle *loghandle)
{
	LASSERT(cfs_atomic_read(&loghandle->lgh_refcount) > 0);
	if (cfs_atomic_dec_and_test(&loghandle->lgh_refcount))
		llog_free_handle(loghandle);
}