diff --git a/doc/Makefile.in b/doc/Makefile.in
index a8604e8..b67dfc8 100644
--- a/doc/Makefile.in
+++ b/doc/Makefile.in
@@ -108,7 +108,15 @@ OBJECTS=ck_ht_count 	  		\
 	ck_pr_btc			\
 	ck_pr_btr			\
 	ck_pr_store			\
-	ck_pr_load
+	ck_pr_load			\
+	ck_ring_init			\
+	ck_ring_dequeue_spmc		\
+	ck_ring_enqueue_spmc		\
+	ck_ring_enqueue_spmc_size	\
+	ck_ring_trydequeue_spmc		\
+	ck_ring_dequeue_spsc		\
+	ck_ring_enqueue_spsc		\
+	ck_ring_enqueue_spsc_size
 
 all: 
 	for target in $(OBJECTS); do 			   \
@@ -116,9 +124,11 @@ all:
 	done
 
 html:
-	for target in $(OBJECTS); do 			   \
-		echo $$target;				   \
-		groff -man -Tascii $(SRC_DIR)/doc/$$target | man2html -noheads -bare -cgiurl='$$title.html' > $(BUILD_DIR)/doc/$$target$(HTML_SUFFIX); \
+	for target in $(OBJECTS); do 			   		\
+		echo $$target;				   		\
+		groff -man -Tascii $(SRC_DIR)/doc/$$target |		\
+		    man2html -noheads -bare -cgiurl='$$title.html' >	\
+		   $(BUILD_DIR)/doc/$$target$(HTML_SUFFIX); 		\
 	done
 
 install:
diff --git a/doc/ck_ring_dequeue_spmc b/doc/ck_ring_dequeue_spmc
new file mode 100644
index 0000000..076ceec
--- /dev/null
+++ b/doc/ck_ring_dequeue_spmc
@@ -0,0 +1,107 @@
+.\"
+.\" Copyright 2012-2013 Samy Al Bahra.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"
+.Dd April 20, 2013
+.Dt CK_RING_DEQUEUE_SPMC 3
+.Sh NAME
+.Nm ck_ring_dequeue_spmc
+.Nd dequeue pointer from bounded FIFO
+.Sh LIBRARY
+Concurrency Kit (libck, \-lck)
+.Sh SYNOPSIS
+.In ck_ring.h
+.Ft bool
+.Fn ck_ring_dequeue_spmc "ck_ring_t *ring" "void *result"
+.Sh DESCRIPTION
+The
+.Fn ck_ring_dequeue_spmc 3
+function dequeues a pointer from the bounded buffer
+pointed to by
+.Fa ring
+in FIFO fashion. The pointer is stored in the pointer
+pointed to by
+.Fa result .
+If you are on non-POSIX platforms or wish for strict
+compliance with C, then it is recommended to pass a
+pointer of type void ** for
+.Fa result .
+This function is safe to call without locking for UINT_MAX
+concurrent invocations of
+.Fn ck_ring_dequeue_spmc 3
+or
+.Fn ck_ring_trydequeue_spmc 3
+and up to one concurrent
+.Fn ck_ring_enqueue_spmc 3
+or
+.Fn ck_ring_tryenqueue_spmc 3
+invocation. This function provides lock-free progress
+guarantees.
+.Sh EXAMPLE
+.Bd -literal -offset indent
+#include <ck_ring.h>
+
+/* This ring was previously initialized with ck_ring_init. */
+ck_ring_t ring;
+
+void
+dequeue(void)
+{
+	void *result;
+
+	/* Dequeue from ring until it is empty. */
+	while (ck_ring_dequeue_spmc(&ring, &result) == true) {
+		/*
+		 * Results contains the oldest pointer in ring
+		 * since the dequeue operation returned true.
+		 */
+		operation(result);
+	}
+
+	/* An empty ring was encountered, leave. */
+	return; 
+}
+.Ed
+.Sh RETURN VALUES
+The function returns true if the buffer was non-empty.
+The result of the dequeue operation is stored in the
+value pointed to by
+.Fa result .
+The function will return false if the buffer was empty
+and the value in
+.Fa result
+will be undefined.
+.Sh SEE ALSO
+.Xr ck_ring_init 3 ,
+.Xr ck_ring_trydequeue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc_size 3 ,
+.Xr ck_ring_dequeue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc_size 3 ,
+.Xr ck_ring_capacity 3 ,
+.Xr ck_ring_size 3
+.Pp
+Additional information available at http://concurrencykit.org/
diff --git a/doc/ck_ring_dequeue_spsc b/doc/ck_ring_dequeue_spsc
new file mode 100644
index 0000000..ed362f1
--- /dev/null
+++ b/doc/ck_ring_dequeue_spsc
@@ -0,0 +1,103 @@
+.\"
+.\" Copyright 2012-2013 Samy Al Bahra.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"
+.Dd April 20, 2013
+.Dt CK_RING_DEQUEUE_SPSC 3
+.Sh NAME
+.Nm ck_ring_dequeue_spsc
+.Nd dequeue pointer from bounded FIFO
+.Sh LIBRARY
+Concurrency Kit (libck, \-lck)
+.Sh SYNOPSIS
+.In ck_ring.h
+.Ft bool
+.Fn ck_ring_dequeue_spsc "ck_ring_t *ring" "void *result"
+.Sh DESCRIPTION
+The
+.Fn ck_ring_dequeue_spsc 3
+function dequeues a pointer from the bounded buffer
+pointed to by
+.Fa ring
+in FIFO fashion. The pointer is stored in the pointer
+pointed to by
+.Fa result .
+If you are on non-POSIX platforms or wish for strict
+compliance with C, then it is recommended to pass a
+pointer of type void ** for
+.Fa result .
+This function is safe to call without locking for one
+concurrent invocation of
+.Fn ck_ring_dequeue_spsc 3
+and up to one concurrent
+.Fn ck_ring_enqueue_spsc 3
+invocation. This function provides wait-free progress
+guarantees.
+.Sh EXAMPLE
+.Bd -literal -offset indent
+#include <ck_ring.h>
+
+/* This ring was previously initialized with ck_ring_init. */
+ck_ring_t ring;
+
+void
+dequeue(void)
+{
+	void *result;
+
+	/* Dequeue from ring until it is empty. */
+	while (ck_ring_dequeue_spsc(&ring, &result) == true) {
+		/*
+		 * Results contains the oldest pointer in ring
+		 * since the dequeue operation returned true.
+		 */
+		operation(result);
+	}
+
+	/* An empty ring was encountered, leave. */
+	return; 
+}
+.Ed
+.Sh RETURN VALUES
+The function returns true if the buffer was non-empty.
+The result of the dequeue operation is stored in the
+value pointed to by
+.Fa result .
+The function will return false if the buffer was empty
+and the value in
+.Fa result
+will be undefined.
+.Sh SEE ALSO
+.Xr ck_ring_init 3 ,
+.Xr ck_ring_trydequeue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc_size 3 ,
+.Xr ck_ring_dequeue_spmc 3 ,
+.Xr ck_ring_enqueue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc_size 3 ,
+.Xr ck_ring_capacity 3 ,
+.Xr ck_ring_size 3
+.Pp
+Additional information available at http://concurrencykit.org/
diff --git a/doc/ck_ring_enqueue_spmc b/doc/ck_ring_enqueue_spmc
new file mode 100644
index 0000000..12732aa
--- /dev/null
+++ b/doc/ck_ring_enqueue_spmc
@@ -0,0 +1,103 @@
+.\"
+.\" Copyright 2012-2013 Samy Al Bahra.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"
+.Dd April 20, 2013
+.Dt CK_RING_ENQUEUE_SPMC 3
+.Sh NAME
+.Nm ck_ring_enqueue_spmc
+.Nd enqueue pointer into bounded FIFO
+.Sh LIBRARY
+Concurrency Kit (libck, \-lck)
+.Sh SYNOPSIS
+.In ck_ring.h
+.Ft bool
+.Fn ck_ring_enqueue_spmc "ck_ring_t *ring" "void *entry"
+.Sh DESCRIPTION
+The
+.Fn ck_ring_enqueue_spmc 3
+function enqueues the pointer
+.Fa entry
+into the bounded buffer pointed to by
+.Fa ring
+in FIFO fashion. 
+If you are on non-POSIX platforms or wish for strict
+compliance with C, then it is recommended to pass a
+pointer of type void ** for
+.Fa entry .
+This function is safe to call without locking for UINT_MAX
+concurrent invocations of
+.Fn ck_ring_dequeue_spmc 3
+or
+.Fn ck_ring_trydequeue_spmc 3 .
+This function provides wait-free progress
+guarantees for one active invocation.
+.Sh EXAMPLE
+.Bd -literal -offset indent
+#include <ck_ring.h>
+
+/* This ring was previously initialized with ck_ring_init. */
+ck_ring_t ring;
+
+void
+enqueue(void)
+{
+	void *entry = some_object;
+
+	/* Attempt to enqueue pointer to some_object into buffer. */
+	if (ck_ring_enqueue_spmc(&ring, &entry) == false) {
+		/*
+		 * The buffer was full and the enqueue operation
+		 * has failed.
+		 */
+		return;
+	}
+
+	/* Enqueue operation completed successfully. */
+	return; 
+}
+.Ed
+.Sh RETURN VALUES
+The function returns true if the value of 
+.Fa entry
+was successfully enqueued into
+.Fa ring .
+The function will return false if the value of
+.Fa entry
+could not be enqueued which only occurs if
+.Fa ring
+was full.
+.Sh SEE ALSO
+.Xr ck_ring_init 3 ,
+.Xr ck_ring_dequeue_spmc 3 ,
+.Xr ck_ring_trydequeue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc_size 3 ,
+.Xr ck_ring_dequeue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc_size 3 ,
+.Xr ck_ring_capacity 3 ,
+.Xr ck_ring_size 3
+.Pp
+Additional information available at http://concurrencykit.org/
diff --git a/doc/ck_ring_enqueue_spmc_size b/doc/ck_ring_enqueue_spmc_size
new file mode 100644
index 0000000..a137789
--- /dev/null
+++ b/doc/ck_ring_enqueue_spmc_size
@@ -0,0 +1,115 @@
+.\"
+.\" Copyright 2012-2013 Samy Al Bahra.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"
+.Dd April 20, 2013
+.Dt CK_RING_ENQUEUE_SPMC_SIZE 3
+.Sh NAME
+.Nm ck_ring_enqueue_spmc_size
+.Nd enqueue pointer into bounded FIFO and return size of buffer
+.Sh LIBRARY
+Concurrency Kit (libck, \-lck)
+.Sh SYNOPSIS
+.In ck_ring.h
+.Ft bool
+.Fn ck_ring_enqueue_spmc_size "ck_ring_t *ring" "void *entry" "unsigned int *length"
+.Sh DESCRIPTION
+The
+.Fn ck_ring_enqueue_spmc 3
+function enqueues the pointer
+.Fa entry
+into the bounded buffer pointed to by
+.Fa ring
+in FIFO fashion. 
+If you are on non-POSIX platforms or wish for strict
+compliance with C, then it is recommended to pass a
+pointer of type void ** for
+.Fa entry .
+This function is safe to call without locking for UINT_MAX
+concurrent invocations of
+.Fn ck_ring_dequeue_spmc 3
+or
+.Fn ck_ring_trydequeue_spmc 3 .
+This function provides wait-free progress
+guarantees for one active invocation.
+.Sh EXAMPLE
+.Bd -literal -offset indent
+#include <ck_ring.h>
+
+/* This ring was previously initialized with ck_ring_init. */
+ck_ring_t ring;
+
+void
+enqueue(void)
+{
+	void *entry = some_object;
+	unsigned int length;
+
+	/* Attempt to enqueue pointer to some_object into buffer. */
+	if (ck_ring_enqueue_spmc_size(&ring, &entry, &length) == false) {
+		/*
+		 * The buffer was full and the enqueue operation
+		 * has failed.
+		 */
+		return;
+	}
+
+	/*
+	 * If entry was the 101st or greater pointer in the buffer,
+	 * do something.
+	 */
+	if (length > 100) {
+		do_something;
+	}
+
+	return; 
+}
+.Ed
+.Sh RETURN VALUES
+The function returns true if the value of 
+.Fa entry
+was successfully enqueued into
+.Fa ring .
+The function will return false if the value of
+.Fa entry
+could not be enqueued which only occurs if
+.Fa ring
+was full. The number of entries in the buffer
+with respect to the point in time that
+.Fa entry
+is enqueued is stored in the integer pointed to by
+.Fa length .
+.Sh SEE ALSO
+.Xr ck_ring_init 3 ,
+.Xr ck_ring_dequeue_spmc 3 ,
+.Xr ck_ring_trydequeue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc 3 ,
+.Xr ck_ring_dequeue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc_size 3 ,
+.Xr ck_ring_capacity 3 ,
+.Xr ck_ring_size 3
+.Pp
+Additional information available at http://concurrencykit.org/
diff --git a/doc/ck_ring_enqueue_spsc b/doc/ck_ring_enqueue_spsc
new file mode 100644
index 0000000..b1384d5
--- /dev/null
+++ b/doc/ck_ring_enqueue_spsc
@@ -0,0 +1,101 @@
+.\"
+.\" Copyright 2012-2013 Samy Al Bahra.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"
+.Dd April 20, 2013
+.Dt CK_RING_ENQUEUE_SPSC 3
+.Sh NAME
+.Nm ck_ring_enqueue_spsc
+.Nd enqueue pointer into bounded FIFO
+.Sh LIBRARY
+Concurrency Kit (libck, \-lck)
+.Sh SYNOPSIS
+.In ck_ring.h
+.Ft bool
+.Fn ck_ring_enqueue_spsc "ck_ring_t *ring" "void *entry"
+.Sh DESCRIPTION
+The
+.Fn ck_ring_enqueue_spsc 3
+function enqueues the pointer
+.Fa entry
+into the bounded buffer pointed to by
+.Fa ring
+in FIFO fashion. 
+If you are on non-POSIX platforms or wish for strict
+compliance with C, then it is recommended to pass a
+pointer of type void ** for
+.Fa entry .
+This function is safe to call without locking for up to
+one concurrent invocation of
+.Fn ck_ring_dequeue_spsc 3 .
+This function provides wait-free progress
+guarantees.
+.Sh EXAMPLE
+.Bd -literal -offset indent
+#include <ck_ring.h>
+
+/* This ring was previously initialized with ck_ring_init. */
+ck_ring_t ring;
+
+void
+enqueue(void)
+{
+	void *entry = some_object;
+
+	/* Attempt to enqueue pointer to some_object into buffer. */
+	if (ck_ring_enqueue_spsc(&ring, &entry) == false) {
+		/*
+		 * The buffer was full and the enqueue operation
+		 * has failed.
+		 */
+		return;
+	}
+
+	/* Enqueue operation completed successfully. */
+	return; 
+}
+.Ed
+.Sh RETURN VALUES
+The function returns true if the value of 
+.Fa entry
+was successfully enqueued into
+.Fa ring .
+The function will return false if the value of
+.Fa entry
+could not be enqueued which only occurs if
+.Fa ring
+was full.
+.Sh SEE ALSO
+.Xr ck_ring_init 3 ,
+.Xr ck_ring_dequeue_spmc 3 ,
+.Xr ck_ring_trydequeue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc_size 3 ,
+.Xr ck_ring_dequeue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc_size 3 ,
+.Xr ck_ring_capacity 3 ,
+.Xr ck_ring_size 3
+.Pp
+Additional information available at http://concurrencykit.org/
diff --git a/doc/ck_ring_enqueue_spsc_size b/doc/ck_ring_enqueue_spsc_size
new file mode 100644
index 0000000..3cfb507
--- /dev/null
+++ b/doc/ck_ring_enqueue_spsc_size
@@ -0,0 +1,116 @@
+.\"
+.\" Copyright 2012-2013 Samy Al Bahra.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"
+.Dd April 20, 2013
+.Dt CK_RING_ENQUEUE_SPSC_SIZE 3
+.Sh NAME
+.Nm ck_ring_enqueue_spsc_size
+.Nd enqueue pointer into bounded FIFO and return size of buffer
+.Sh LIBRARY
+Concurrency Kit (libck, \-lck)
+.Sh SYNOPSIS
+.In ck_ring.h
+.Ft bool
+.Fn ck_ring_enqueue_spsc_size "ck_ring_t *ring" "void *entry" "unsigned int *size"
+.Sh DESCRIPTION
+The
+.Fn ck_ring_enqueue_spsc_size 3
+function enqueues the pointer
+.Fa entry
+into the bounded buffer pointed to by
+.Fa ring
+in FIFO fashion. 
+If you are on non-POSIX platforms or wish for strict
+compliance with C, then it is recommended to pass a
+pointer of type void ** for
+.Fa entry .
+This function is safe to call without locking for up to
+one concurrent invocation of
+.Fn ck_ring_dequeue_spsc 3 .
+This function provides wait-free progress
+guarantees.
+.Sh EXAMPLE
+.Bd -literal -offset indent
+#include <ck_ring.h>
+
+/* This ring was previously initialized with ck_ring_init. */
+ck_ring_t ring;
+
+void
+enqueue(void)
+{
+	void *entry = some_object;
+	unsigned int length;
+
+	/* Attempt to enqueue pointer to some_object into buffer. */
+	if (ck_ring_enqueue_spsc(&ring, &entry, &length) == false) {
+		/*
+		 * The buffer was full and the enqueue operation
+		 * has failed.
+		 */
+		return;
+	}
+
+	/*
+	 * If buffer length was 100 items or more at the time entry was
+	 * enqueued, do something.
+	 */
+	if (length > 100) {
+		do_something;
+	}
+
+	return; 
+}
+.Ed
+.Sh RETURN VALUES
+The function returns true if the value of 
+.Fa entry
+was successfully enqueued into
+.Fa ring .
+This function will return the number of items
+in
+.Fa ring
+with respect to the linearization point (the
+point in item that
+.Fa entry
+is enqueued).
+The function will return false if the value of
+.Fa entry
+could not be enqueued which only occurs if
+.Fa ring
+was full.
+.Sh SEE ALSO
+.Xr ck_ring_init 3 ,
+.Xr ck_ring_dequeue_spmc 3 ,
+.Xr ck_ring_trydequeue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc_size 3 ,
+.Xr ck_ring_dequeue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc 3 ,
+.Xr ck_ring_capacity 3 ,
+.Xr ck_ring_size 3
+.Pp
+Additional information available at http://concurrencykit.org/
diff --git a/doc/ck_ring_init b/doc/ck_ring_init
new file mode 100644
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+.\"
+.\" Copyright 2012-2013 Samy Al Bahra.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"
+.Dd April 20, 2013
+.Dt CK_RING_INIT 3
+.Sh NAME
+.Nm ck_ring_init
+.Nd initialize bounded FIFO
+.Sh LIBRARY
+Concurrency Kit (libck, \-lck)
+.Sh SYNOPSIS
+.In ck_ring.h
+.Ft void
+.Fn ck_ring_init "ck_ring_t *ring" "void *buffer" "unsigned int size"
+.Sh DESCRIPTION
+The
+.Fn ck_ring_init
+function initializes a bounded FIFO buffer pointed to by
+.Fa ring
+for the storage of up to
+.Fa size
+number of pointers. The
+.Fa buffer
+argument must be a pointer to an array of void * of
+length 
+.Fa size .
+The
+.Fa size
+argument must be a power-of-two greater than or equal to 4.
+.Sh RETURN VALUES
+This function has no return value.
+.Sh SEE ALSO
+.Xr ck_ring_dequeue_spmc 3 ,
+.Xr ck_ring_trydequeue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc_size 3 ,
+.Xr ck_ring_dequeue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc_size 3 ,
+.Xr ck_ring_capacity 3 ,
+.Xr ck_ring_size 3
+.Pp
+Additional information available at http://concurrencykit.org/
diff --git a/doc/ck_ring_trydequeue_spmc b/doc/ck_ring_trydequeue_spmc
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+.\"
+.\" Copyright 2012-2013 Samy Al Bahra.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"
+.Dd April 20, 2013
+.Dt CK_RING_TRYDEQUEUE_SPMC 3
+.Sh NAME
+.Nm ck_ring_trydequeue_spmc
+.Nd dequeue from bounded FIFO and allow for spurious failure
+.Sh LIBRARY
+Concurrency Kit (libck, \-lck)
+.Sh SYNOPSIS
+.In ck_ring.h
+.Ft bool
+.Fn ck_ring_trydequeue_spmc "ck_ring_t *ring" "void *result"
+.Sh DESCRIPTION
+The
+.Fn ck_ring_trydequeue_spmc 3
+function attempts to dequeue a pointer from the bounded buffer
+pointed to by
+.Fa ring
+in FIFO fashion. The pointer is stored in the pointer
+pointed to by
+.Fa result .
+If you are on non-POSIX platforms or wish for strict
+compliance with C, then it is recommended to pass a
+pointer of type void ** for
+.Fa result .
+This function is safe to call without locking for UINT_MAX
+concurrent
+.Fn ck_ring_dequeue_spmc 3
+or
+.Fn ck_ring_trydequeue_spmc 3
+invocations and up to one concurrent
+.Fn ck_ring_enqueue_spmc 3
+or
+.Fn ck_ring_tryenqueue_spmc 3
+invocation. This operation will always complete
+in a bounded number of steps. It is
+possible for the function to return false even
+if
+.Fa ring
+is non-empty. This 
+.Sh EXAMPLE
+.Bd -literal -offset indent
+#include <ck_ring.h>
+
+/* This ring was previously initialized with ck_ring_init. */
+ck_ring_t ring;
+
+void
+dequeue(void)
+{
+	void *result;
+
+	/* Dequeue from ring until contention is actively observed. */
+	while (ck_ring_trydequeue_spmc(&ring, &result) == true) {
+		/*
+		 * Results contains the oldest pointer in ring
+		 * since the dequeue operation returned true.
+		 */
+		operation(result);
+	}
+
+	/* An empty ring was encountered, leave. */
+	return; 
+}
+.Ed
+.Sh RETURN VALUES
+The function returns true if the dequeue operation
+completely successfully in a bounded number of steps.
+The result of the dequeue operation is stored in the
+value pointed to by
+.Fa result .
+Otherwise, the function will return false if the buffer was empty
+or if the operation could not be completed in a bounded
+number of steps. If the function returns false, then the contents
+of
+.Fa result
+are undefined.
+.Sh SEE ALSO
+.Xr ck_ring_init 3 ,
+.Xr ck_ring_dequeue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc 3 ,
+.Xr ck_ring_enqueue_spmc_size 3 ,
+.Xr ck_ring_dequeue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc 3 ,
+.Xr ck_ring_enqueue_spsc_size 3 ,
+.Xr ck_ring_capacity 3 ,
+.Xr ck_ring_size 3
+.Pp
+Additional information available at http://concurrencykit.org/