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Diffstat (limited to 'hifi/xaf/host-apf/proxy/xf-proxy.c')
-rw-r--r--hifi/xaf/host-apf/proxy/xf-proxy.c686
1 files changed, 686 insertions, 0 deletions
diff --git a/hifi/xaf/host-apf/proxy/xf-proxy.c b/hifi/xaf/host-apf/proxy/xf-proxy.c
new file mode 100644
index 00000000..0af45179
--- /dev/null
+++ b/hifi/xaf/host-apf/proxy/xf-proxy.c
@@ -0,0 +1,686 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+*
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and
+* not with any other processors and platforms, subject to
+* the following conditions:
+*
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#define MODULE_TAG PROXY
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * Tracing configuration
+ ******************************************************************************/
+
+TRACE_TAG(INIT, 1);
+TRACE_TAG(CMD, 1);
+TRACE_TAG(EXEC, 1);
+TRACE_TAG(RSP, 1);
+TRACE_TAG(REG, 1);
+TRACE_TAG(MEM, 1);
+TRACE_TAG(GRAPH, 1);
+TRACE_TAG(BUFFER, 1);
+
+/*******************************************************************************
+ * Internal functions definitions
+ ******************************************************************************/
+
+/* ...execute proxy command synchronously */
+static inline int xf_proxy_cmd_exec(xf_proxy_t *proxy, xf_user_msg_t *msg)
+{
+ xf_proxy_msg_t m;
+
+ /* ...send command to remote proxy */
+ m.id = msg->id, m.opcode = msg->opcode, m.length = msg->length;
+
+ /* ...translate address */
+ XF_CHK_ERR((m.address = xf_proxy_b2a(proxy, msg->buffer)) != XF_PROXY_BADADDR, -EINVAL);
+
+ /* ...pass command to remote proxy */
+ XF_CHK_API(xf_ipc_send(&proxy->ipc, &m, msg->buffer));
+
+ /* ...wait for response reception indication from proxy thread */
+ XF_CHK_API(xf_proxy_response_get(proxy, &m));
+
+ /* ...copy parameters */
+ msg->id = m.id, msg->opcode = m.opcode, msg->length = m.length;
+
+ /* ...translate address back to virtual space */
+ XF_CHK_ERR((msg->buffer = xf_proxy_a2b(proxy, m.address)) != (void *)-1, -EBADFD);
+
+ TRACE(EXEC, _b("proxy[%p]: command done: [%08x:%p:%u]"), proxy, msg->opcode, msg->buffer, msg->length);
+
+ return 0;
+}
+
+#if 0
+/* ...pass command to remote DSP */
+static inline int xf_proxy_cmd(xf_proxy_t *proxy, xf_handle_t *handle, xf_user_msg_t *m)
+{
+ xf_proxy_msg_t msg;
+
+ /* ...set session-id of the message */
+ msg.id = __XF_MSG_ID(__XF_AP_CLIENT(proxy->core, handle->client), m->id);
+ msg.opcode = m->opcode;
+ msg.length = m->length;
+
+ /* ...translate buffer pointer to shared address */
+ XF_CHK_ERR((msg.address = xf_proxy_b2a(proxy, m->buffer)) != XF_PROXY_BADADDR, -EINVAL);
+
+ /* ...submit command message to IPC layer */
+ return XF_CHK_API(xf_ipc_send(&proxy->ipc, &msg, m->buffer));
+}
+#endif /* 0 */
+
+/* ...allocate local client-id number */
+static inline u32 xf_client_alloc(xf_proxy_t *proxy, xf_handle_t *handle)
+{
+ u32 client;
+
+ if ((client = proxy->cmap[0].next) != 0)
+ {
+ /* ...pop client from free clients list */
+ proxy->cmap[0].next = proxy->cmap[client].next;
+
+ /* ...put client handle into association map */
+ handle->client = client, proxy->cmap[client].handle = handle;
+ }
+
+ return client;
+}
+
+/* ...recycle local client-id number */
+static inline void xf_client_free(xf_proxy_t *proxy, xf_handle_t *handle)
+{
+ u32 client = handle->client;
+
+ /* ...push client into head of the free clients list */
+ proxy->cmap[client].next = proxy->cmap[0].next;
+
+ /* ...adjust head of free clients */
+ proxy->cmap[0].next = client;
+}
+
+/* ...lookup client basing on its local id */
+static inline xf_handle_t * xf_client_lookup(xf_proxy_t *proxy, u32 client)
+{
+ /* ...client index must be in proper range */
+ BUG(client >= XF_CFG_PROXY_MAX_CLIENTS, _x("Invalid client index: %u"), client);
+
+ /* ...check if client index is small */
+ if (proxy->cmap[client].next < XF_CFG_PROXY_MAX_CLIENTS)
+ return NULL;
+ else
+ return proxy->cmap[client].handle;
+}
+
+/* ...create new client on remote core */
+static inline int xf_client_register(xf_proxy_t *proxy, xf_handle_t *handle, xf_id_t id, u32 core)
+{
+ void *b = xf_handle_aux(handle);
+ xf_user_msg_t msg;
+
+ /* ...set session-id: source is local proxy, destination is remote proxy */
+ msg.id = __XF_MSG_ID(__XF_AP_PROXY(proxy->core), __XF_DSP_PROXY(core));
+ msg.opcode = XF_REGISTER;
+ msg.buffer = b;
+ msg.length = strlen(id) + 1;
+
+ /* ...copy component identifier */
+ strncpy(b, id, xf_buffer_length(handle->aux));
+
+ /* ...execute command synchronously */
+ XF_CHK_API(xf_proxy_cmd_exec(proxy, &msg));
+
+ /* ...check operation is successfull */
+ XF_CHK_ERR(msg.opcode == (u32) XF_REGISTER, -EFAULT);
+
+ /* ...save received component global client-id */
+ handle->id = XF_MSG_SRC(msg.id);
+
+ TRACE(REG, _b("[%p]=[%s:%u:%u]"), handle, id, XF_PORT_CORE(handle->id), XF_PORT_CLIENT(handle->id));
+
+ return 0;
+}
+
+/* ...unregister client from remote proxy */
+static inline int xf_client_unregister(xf_proxy_t *proxy, xf_handle_t *handle)
+{
+ xf_user_msg_t msg;
+
+ /* ...make sure the client is consistent */
+ BUG(proxy->cmap[handle->client].handle != handle, _x("Invalid handle: %p"), handle);
+
+ /* ...set message parameters */
+ msg.id = __XF_MSG_ID(__XF_AP_PROXY(proxy->core), handle->id);
+ msg.opcode = XF_UNREGISTER;
+ msg.buffer = NULL;
+ msg.length = 0;
+
+ /* ...synchronously execute command on remote proxy */
+ XF_CHK_API(xf_proxy_cmd_exec(proxy, &msg));
+
+ /* ...opcode must be XF_UNREGISTER - tbd */
+ BUG(msg.opcode != XF_UNREGISTER, _x("Invalid opcode: %X"), msg.opcode);
+
+ TRACE(REG, _b("%p[%u:%u] unregistered"), handle, XF_PORT_CORE(handle->id), XF_PORT_CLIENT(handle->id));
+
+ return 0;
+}
+
+/* ...allocate shared buffer */
+static inline int xf_proxy_buffer_alloc(xf_proxy_t *proxy, u32 length, void **buffer)
+{
+ u32 core = proxy->core;
+ xf_user_msg_t msg;
+
+ /* ...prepare command parameters */
+ msg.id = __XF_MSG_ID(__XF_AP_PROXY(core), __XF_DSP_PROXY(core));
+ msg.opcode = XF_ALLOC;
+ msg.length = length;
+ msg.buffer = NULL;
+
+ /* ...synchronously execute command on remote proxy */
+ XF_CHK_API(xf_proxy_cmd_exec(proxy, &msg));
+
+ /* ...check if response is valid */
+ XF_CHK_ERR(msg.opcode == XF_ALLOC, -EBADFD);
+
+ /* ...check if allocation is successful */
+ XF_CHK_ERR(msg.buffer != NULL, -ENOMEM);
+
+ /* ...save output parameter */
+ *buffer = msg.buffer;
+
+ TRACE(MEM, _b("proxy-%u: allocated [%p:%u]"), core, *buffer, length);
+
+ return 0;
+}
+
+/* ...free shared AP-DSP memory */
+static inline int xf_proxy_buffer_free(xf_proxy_t *proxy, void *buffer, u32 length)
+{
+ u32 core = proxy->core;
+ xf_user_msg_t msg;
+
+ /* ...prepare command parameters */
+ msg.id = __XF_MSG_ID(__XF_AP_PROXY(core), __XF_DSP_PROXY(core));
+ msg.opcode = XF_FREE;
+ msg.length = length;
+ msg.buffer = buffer;
+
+ /* ...synchronously execute command on remote proxy */
+ XF_CHK_API(xf_proxy_cmd_exec(proxy, &msg));
+
+ /* ...check if response is valid */
+ XF_CHK_ERR(msg.opcode == XF_FREE, -EBADFD);
+
+ TRACE(MEM, _b("proxy-%u: free [%p:%u]"), core, buffer, length);
+
+ return 0;
+}
+
+/*******************************************************************************
+ * Proxy interface asynchronous receiving thread
+ ******************************************************************************/
+
+static void * xf_proxy_thread(void *arg)
+{
+ xf_proxy_t *proxy = arg;
+ xf_handle_t *client;
+ int r;
+
+ /* ...start polling thread */
+ while (1)
+ {
+ xf_proxy_msg_t m;
+ xf_user_msg_t msg;
+
+ /* ...wait for response from remote proxy (infinite timeout) */
+ if ((r = xf_ipc_wait(&proxy->ipc, 0)) < 0)
+ break;
+
+ /* ...retrieve all responses received */
+ while ((r = xf_ipc_recv(&proxy->ipc, &m, &msg.buffer)) == sizeof(m))
+ {
+ /* ...make sure we have proper core identifier of SHMEM interface */
+ BUG(XF_MSG_DST_CORE(m.id) != proxy->core, _x("Invalid session-id: %X (core=%u)"), m.id, proxy->core);
+
+ /* ...make sure translation is successful */
+ BUG(msg.buffer == (void *)-1, _x("Invalid buffer address: %08x"), m.address);
+
+ /* ...retrieve information fields */
+ msg.id = XF_MSG_SRC(m.id), msg.opcode = m.opcode, msg.length = m.length;
+
+ TRACE(RSP, _b("R[%08x]:(%08x,%u,%08x)"), m.id, m.opcode, m.length, m.address);
+
+ /* ...lookup component basing on destination port specification */
+ if (XF_AP_CLIENT(m.id) == 0)
+ {
+ /* ...put proxy response to local IPC queue */
+ xf_proxy_response_put(proxy, &m);
+ }
+ else if ((client = xf_client_lookup(proxy, XF_AP_CLIENT(m.id))) != NULL)
+ {
+ /* ...client is found; invoke its response callback (must be non-blocking) */
+ client->response(client, &msg);
+ }
+ else
+ {
+ /* ...client has been disconnected already; drop message */
+ TRACE(RSP, _b("Client look-up failed - drop message"));
+ }
+ }
+
+ /* ...if result code is negative; terminate thread operation */
+ if (r < 0)
+ {
+ TRACE(ERROR, _x("abnormal proxy[%p] thread termination: %d"), proxy, r);
+ break;
+ }
+ }
+
+ TRACE(INIT, _b("IPC proxy[%p] thread terminated: %d"), proxy, r);
+
+ return (void *)(intptr_t)r;
+}
+
+/*******************************************************************************
+ * HiFi proxy API
+ ******************************************************************************/
+
+/* ...open HiFi proxy */
+int xf_proxy_init(xf_proxy_t *proxy, u32 core, void *p_shmem)
+{
+ u32 i;
+ int r;
+
+ /* ...initialize proxy lock */
+ __xf_lock_init(&proxy->lock);
+
+ /* ...open proxy IPC interface */
+ XF_CHK_API(xf_ipc_open(&proxy->ipc, core, p_shmem));
+
+ /* ...save proxy core - hmm, too much core identifiers - tbd */
+ proxy->core = core;
+
+ /* ...line-up all clients into single-linked list */
+ for (i = 0; i < XF_CFG_PROXY_MAX_CLIENTS - 1; i++)
+ {
+ proxy->cmap[i].next = i + 1;
+ }
+
+ /* ...tail of the list points back to head (list terminator) */
+ proxy->cmap[i].next = 0;
+
+ /* ...initialize thread attributes (joinable, with minimal stack) */
+ if ((r = __xf_thread_create(&proxy->thread, xf_proxy_thread, proxy)) < 0)
+ {
+ TRACE(ERROR, _x("Failed to create polling thread: %d"), r);
+ xf_ipc_close(&proxy->ipc, core);
+ return r;
+ }
+
+ TRACE(INIT, _b("proxy-%u[%p] opened"), core, proxy);
+
+ return 0;
+}
+
+/* ...close proxy handle */
+void xf_proxy_close(xf_proxy_t *proxy)
+{
+ u32 core = proxy->core;
+
+ /* ...terminate proxy thread */
+ __xf_thread_destroy(&proxy->thread);
+
+ /* ...close proxy IPC interface */
+ xf_ipc_close(&proxy->ipc, core);
+
+ TRACE(INIT, _b("proxy-%u[%p] closed"), core, proxy);
+}
+
+/*******************************************************************************
+ * HiFi component API
+ ******************************************************************************/
+
+/* ...open component handle */
+int xf_open(xf_proxy_t *proxy, xf_handle_t *handle, xf_id_t id, u32 core, xf_response_cb response)
+{
+ int r;
+
+ /* ...retrieve auxiliary control buffer from proxy - need I */
+ XF_CHK_ERR(handle->aux = xf_buffer_get(proxy->aux), -EBUSY);
+
+ /* ...initialize IPC data */
+ XF_CHK_API(xf_ipc_data_init(&handle->ipc));
+
+ /* ...register client in interlocked fashion */
+ xf_proxy_lock(proxy);
+
+ /* ...allocate local client */
+ if (xf_client_alloc(proxy, handle) == 0)
+ {
+ TRACE(ERROR, _x("client allocation failed"));
+ r = -EBUSY;
+ }
+ else if ((r = xf_client_register(proxy, handle, id, core)) < 0)
+ {
+ TRACE(ERROR, _x("client registering failed"));
+ xf_client_free(proxy, handle);
+ }
+
+ xf_proxy_unlock(proxy);
+
+ /* ...if failed, release buffer handle */
+ if (r < 0)
+ {
+ /* ...operation failed; return buffer back to proxy pool */
+ xf_buffer_put(handle->aux), handle->aux = NULL;
+ }
+ else
+ {
+ /* ...operation completed successfully; assign handle data */
+ handle->response = response;
+ handle->proxy = proxy;
+
+ TRACE(INIT, _b("component[%p]:(id=%s,core=%u) created"), handle, id, core);
+ }
+
+ return XF_CHK_API(r);
+}
+
+/* ...close component handle */
+void xf_close(xf_handle_t *handle)
+{
+ xf_proxy_t *proxy = handle->proxy;
+
+ /* ...do I need to take component lock here? guess no - tbd */
+
+ /* ...buffers and stuff? - tbd */
+
+ /* ...acquire global proxy lock */
+ xf_proxy_lock(proxy);
+
+ /* ...unregister component from remote DSP proxy (ignore result code) */
+ (void) xf_client_unregister(proxy, handle);
+
+ /* ...recycle client-id afterwards */
+ xf_client_free(proxy, handle);
+
+ /* ...release global proxy lock */
+ xf_proxy_unlock(proxy);
+
+ /* ...destroy IPC data */
+ xf_ipc_data_destroy(&handle->ipc);
+
+ /* ...clear handle data */
+ xf_buffer_put(handle->aux), handle->aux = NULL;
+
+ /* ...wipe out proxy pointer */
+ handle->proxy = NULL;
+
+ TRACE(INIT, _b("component[%p] destroyed"), handle);
+}
+
+/* ...port binding function */
+int xf_route(xf_handle_t *src, u32 src_port, xf_handle_t *dst, u32 dst_port, u32 num, u32 size, u32 align)
+{
+ xf_proxy_t *proxy = src->proxy;
+ xf_buffer_t *b;
+ xf_route_port_msg_t *m;
+ xf_user_msg_t msg;
+
+ /* ...validity checks - proxy pointers are same */
+ XF_CHK_ERR(proxy == dst->proxy, -EINVAL);
+
+ /* ...buffer data is valid */
+ XF_CHK_ERR(num && size && xf_is_power_of_two(align), -EINVAL);
+
+ /* ...get control buffer */
+ XF_CHK_ERR(b = xf_buffer_get(proxy->aux), -EBUSY);
+
+ /* ...get message buffer */
+ m = xf_buffer_data(b);
+
+ /* ...fill-in message parameters */
+ //m->src = __XF_PORT_SPEC2(src->id, src_port);
+ m->dst = __XF_PORT_SPEC2(dst->id, dst_port);
+ m->alloc_number = num;
+ m->alloc_size = size;
+ m->alloc_align = align;
+
+ /* ...set command parameters */
+ msg.id = __XF_MSG_ID(__XF_AP_PROXY(proxy->core), __XF_PORT_SPEC2(src->id, src_port));
+ msg.opcode = XF_ROUTE;
+ msg.length = sizeof(*m);
+ msg.buffer = m;
+
+ /* ...synchronously execute command on remote DSP */
+ XF_CHK_API(xf_proxy_cmd_exec(proxy, &msg));
+
+ /* ...return buffer to proxy */
+ xf_buffer_put(b);
+
+ /* ...check result is successfull */
+ XF_CHK_ERR(msg.opcode == (u32) XF_ROUTE, -ENOMEM);
+
+ /* ...port binding completed */
+ TRACE(GRAPH, _b("[%p]:%u bound to [%p]:%u"), src, src_port, dst, dst_port);
+
+ return 0;
+}
+
+/* ...port unbinding function */
+int xf_unroute(xf_handle_t *src, u32 src_port)
+{
+ xf_proxy_t *proxy = src->proxy;
+ xf_buffer_t *b;
+ xf_unroute_port_msg_t *m;
+ xf_user_msg_t msg;
+ int r;
+
+ /* ...get control buffer */
+ XF_CHK_ERR(b = xf_buffer_get(proxy->aux), -EBUSY);
+
+ /* ...get message buffer */
+ m = xf_buffer_data(b);
+
+ /* ...fill-in message parameters */
+ //m->src = __XF_PORT_SPEC2(src->id, src_port);
+
+ /* ...set command parameters */
+ msg.id = __XF_MSG_ID(__XF_AP_PROXY(proxy->core), __XF_PORT_SPEC2(src->id, src_port));
+ msg.opcode = XF_UNROUTE;
+ msg.length = sizeof(*m);
+ msg.buffer = m;
+
+ /* ...synchronously execute command on remote DSP */
+ if ((r = xf_proxy_cmd_exec(proxy, &msg)) != 0)
+ {
+ TRACE(ERROR, _x("Command failed: %d"), r);
+ goto out;
+ }
+ else if (msg.opcode != (u32) XF_UNROUTE)
+ {
+ TRACE(ERROR, _x("Port unbinding failed"));
+ r = -EBADFD;
+ goto out;
+ }
+
+ /* ...port binding completed */
+ TRACE(GRAPH, _b("[%p]:%u unbound"), src, src_port);
+
+out:
+ /* ...return buffer to proxy */
+ xf_buffer_put(b);
+
+ return r;
+}
+
+/* ...send a command message to component */
+int xf_command(xf_handle_t *handle, u32 port, u32 opcode, void *buffer, u32 length)
+{
+ xf_proxy_t *proxy = handle->proxy;
+ xf_proxy_msg_t msg;
+
+ /* ...fill-in message parameters */
+ msg.id = __XF_MSG_ID(__XF_AP_CLIENT(proxy->core, handle->client), __XF_PORT_SPEC2(handle->id, port));
+ msg.opcode = opcode;
+ msg.length = length;
+ XF_CHK_ERR((msg.address = xf_proxy_b2a(proxy, buffer)) != XF_PROXY_BADADDR, -EINVAL);
+
+ TRACE(CMD, _b("[%p]:[%08x]:(%08x,%u,%p)"), handle, msg.id, opcode, length, buffer);
+
+ /* ...pass command to IPC layer */
+ return XF_CHK_API(xf_ipc_send(&proxy->ipc, &msg, buffer));
+}
+
+/*******************************************************************************
+ * Buffer pool API
+ ******************************************************************************/
+
+/* ...allocate buffer pool */
+int xf_pool_alloc(xf_proxy_t *proxy, u32 number, u32 length, xf_pool_type_t type, xf_pool_t **pool, s32 id,
+ xaf_mem_malloc_fxn_t xaf_malloc, xaf_mem_free_fxn_t xaf_free)
+{
+ xf_pool_t *p;
+ xf_buffer_t *b;
+ void *data;
+ int r;
+
+ /* ...unused arg */
+ (void) type;
+
+ /* ...basic validity checks; number of buffers is positive */
+ XF_CHK_ERR(number > 0, -EINVAL);
+
+ /* ...get properly aligned buffer length */
+ length = (length + XF_PROXY_ALIGNMENT - 1) & ~(XF_PROXY_ALIGNMENT - 1);
+
+ /* ...allocate data structure */
+ p = xaf_malloc(offset_of(xf_pool_t, buffer) + number * sizeof(xf_buffer_t), id);
+ XF_CHK_ERR(p, -ENOMEM);
+
+ /* ...issue memory pool allocation request to remote DSP */
+ xf_proxy_lock(proxy);
+ r = xf_proxy_buffer_alloc(proxy, number * length, &p->p);
+ xf_proxy_unlock(proxy);
+
+ /* ...if operation is failed, do cleanup */
+ if (r < 0)
+ {
+ TRACE(ERROR, _x("failed to allocate buffer: %d"), r);
+ xaf_free(p, id);
+ return r;
+ }
+ else
+ {
+ /* ...set pool parameters */
+ p->number = number, p->length = length;
+ p->proxy = proxy;
+ }
+
+ /* ...create individual buffers and link them into free list */
+ for (p->free = b = &p->buffer[0], data = p->p; number > 0; number--, b++)
+ {
+ /* ...set address of the buffer (no length there) */
+ b->address = data;
+
+ /* ...file buffer into the free list */
+ b->link.next = b + 1;
+
+ /* ...advance data pointer in contiguous buffer */
+ data = (unsigned char *) data + length;
+ }
+
+ /* ...terminate list of buffers (not too good - tbd) */
+ b[-1].link.next = NULL;
+
+ TRACE(BUFFER, _b("[%p]: pool[%p] created: %u * %u"), proxy, p, p->number, p->length);
+
+ /* ...return buffer pointer */
+ *pool = p;
+
+ return 0;
+}
+
+/* ...buffer pool destruction */
+void xf_pool_free(xf_pool_t *pool, s32 id, xaf_mem_free_fxn_t xaf_free)
+{
+ xf_proxy_t *proxy = pool->proxy;
+
+ /* ...check buffers are all freed - tbd */
+
+ /* ...use global proxy lock for pool operations protection */
+ xf_proxy_lock(proxy);
+
+ /* ...release allocated buffer on remote DSP */
+ xf_proxy_buffer_free(proxy, pool->p, pool->length * pool->number);
+
+ /* ...release global proxy lock */
+ xf_proxy_unlock(proxy);
+
+ /* ...deallocate pool structure itself */
+ xaf_free(pool, id);
+
+ TRACE(BUFFER, _b("[%p]::pool[%p] destroyed"), proxy, pool);
+}
+
+/* ...get new buffer from a pool */
+xf_buffer_t * xf_buffer_get(xf_pool_t *pool)
+{
+ xf_buffer_t *b;
+
+ /* ...use global proxy lock for pool operations protection */
+ xf_proxy_lock(pool->proxy);
+
+ /* ...take buffer from a head of the free list */
+ if ((b = pool->free) != NULL)
+ {
+ /* ...advance free list head */
+ pool->free = b->link.next, b->link.pool = pool;
+
+ TRACE(BUFFER, _b("pool[%p]::get[%p]"), pool, b);
+ }
+
+ xf_proxy_unlock(pool->proxy);
+
+ return b;
+}
+
+/* ...return buffer back to pool */
+void xf_buffer_put(xf_buffer_t *buffer)
+{
+ xf_pool_t *pool = buffer->link.pool;
+
+ /* ...use global proxy lock for pool operations protection */
+ xf_proxy_lock(pool->proxy);
+
+ /* ...put buffer back to a pool */
+ buffer->link.next = pool->free, pool->free = buffer;
+
+ TRACE(BUFFER, _b("pool[%p]::put[%p]"), pool, buffer);
+
+ xf_proxy_unlock(pool->proxy);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-20 02:58:46 +0000