#include <libmemcached/common.h>
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+
+void initialize_binary_request(memcached_instance_st* server, protocol_binary_request_header& header)
+{
+ server->request_id++;
+ header.request.magic= PROTOCOL_BINARY_REQ;
+ header.request.opaque= htons(server->request_id);
+}
+
enum memc_read_or_write {
MEM_READ,
MEM_WRITE
* Try to fill the input buffer for a server with as much
* data as possible.
*
- * @param ptr the server to pack
+ * @param instance the server to pack
*/
-static bool repack_input_buffer(memcached_server_write_instance_st ptr)
+static bool repack_input_buffer(memcached_instance_st* instance)
{
- if (ptr->read_ptr != ptr->read_buffer)
+ if (instance->read_ptr != instance->read_buffer)
{
/* Move all of the data to the beginning of the buffer so
** that we can fit more data into the buffer...
*/
- memmove(ptr->read_buffer, ptr->read_ptr, ptr->read_buffer_length);
- ptr->read_ptr= ptr->read_buffer;
- ptr->read_data_length= ptr->read_buffer_length;
+ memmove(instance->read_buffer, instance->read_ptr, instance->read_buffer_length);
+ instance->read_ptr= instance->read_buffer;
}
/* There is room in the buffer, try to fill it! */
- if (ptr->read_buffer_length != MEMCACHED_MAX_BUFFER)
+ if (instance->read_buffer_length != MEMCACHED_MAX_BUFFER)
{
do {
/* Just try a single read to grab what's available */
ssize_t nr;
- if ((nr= recv(ptr->fd,
- ptr->read_ptr + ptr->read_data_length,
- MEMCACHED_MAX_BUFFER - ptr->read_data_length,
- MSG_DONTWAIT)) <= 0)
+ if ((nr= ::recv(instance->fd,
+ instance->read_ptr + instance->read_buffer_length,
+ MEMCACHED_MAX_BUFFER - instance->read_buffer_length,
+ MSG_NOSIGNAL)) <= 0)
{
if (nr == 0)
{
- memcached_set_error(*ptr, MEMCACHED_CONNECTION_FAILURE, MEMCACHED_AT);
+ memcached_set_error(*instance, MEMCACHED_CONNECTION_FAILURE, MEMCACHED_AT);
}
else
{
case EWOULDBLOCK:
#endif
case EAGAIN:
-#ifdef TARGET_OS_LINUX
+#ifdef __linux
case ERESTART:
#endif
break; // No IO is fine, we can just move on
default:
- memcached_set_errno(*ptr, get_socket_errno(), MEMCACHED_AT);
+ memcached_set_errno(*instance, get_socket_errno(), MEMCACHED_AT);
}
}
}
else // We read data, append to our read buffer
{
- ptr->read_data_length+= size_t(nr);
- ptr->read_buffer_length+= size_t(nr);
+ instance->read_buffer_length+= size_t(nr);
return true;
}
* when the input buffer is full, so that we _know_ that we have
* at least _one_ message to process.
*
- * @param ptr the server to star processing iput messages for
+ * @param instance the server to star processing iput messages for
* @return true if we processed anything, false otherwise
*/
-static bool process_input_buffer(memcached_server_write_instance_st ptr)
+static bool process_input_buffer(memcached_instance_st* instance)
{
/*
** We might be able to process some of the response messages if we
** have a callback set up
*/
- if (ptr->root->callbacks != NULL)
+ if (instance->root->callbacks != NULL)
{
/*
* We might have responses... try to read them out and fire
* callbacks
*/
- memcached_callback_st cb= *ptr->root->callbacks;
+ memcached_callback_st cb= *instance->root->callbacks;
- memcached_set_processing_input((memcached_st *)ptr->root, true);
+ memcached_set_processing_input((Memcached *)instance->root, true);
char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
- memcached_st *root= (memcached_st *)ptr->root;
- memcached_return_t error= memcached_response(ptr, buffer, sizeof(buffer), &root->result);
+ Memcached *root= (Memcached *)instance->root;
+ memcached_return_t error= memcached_response(instance, buffer, sizeof(buffer), &root->result);
memcached_set_processing_input(root, false);
{
for (unsigned int x= 0; x < cb.number_of_callback; x++)
{
- error= (*cb.callback[x])(ptr->root, &root->result, cb.context);
+ error= (*cb.callback[x])(instance->root, &root->result, cb.context);
if (error != MEMCACHED_SUCCESS)
{
break;
return false;
}
-static memcached_return_t io_wait(memcached_server_write_instance_st ptr,
- const memc_read_or_write read_or_write)
+static memcached_return_t io_wait(memcached_instance_st* instance,
+ const short events)
{
/*
** We are going to block on write, but at least on Solaris we might block
** The test is moved down in the purge function to avoid duplication of
** the test.
*/
- if (read_or_write == MEM_WRITE)
+ if (events & POLLOUT)
{
- if (memcached_purge(ptr) == false)
+ if (memcached_purge(instance) == false)
{
return MEMCACHED_FAILURE;
}
}
struct pollfd fds;
- fds.fd= ptr->fd;
- fds.events= POLLIN;
+ fds.fd= instance->fd;
+ fds.events= events;
fds.revents= 0;
- if (read_or_write == MEM_WRITE) /* write */
+ if (fds.events & POLLOUT) /* write */
{
- fds.events= POLLOUT;
- ptr->io_wait_count.write++;
+ instance->io_wait_count.write++;
}
else
{
- ptr->io_wait_count.read++;
+ instance->io_wait_count.read++;
}
- if (ptr->root->poll_timeout == 0) // Mimic 0 causes timeout behavior (not all platforms do this)
+ if (instance->root->poll_timeout == 0) // Mimic 0 causes timeout behavior (not all platforms do this)
{
- ptr->io_wait_count.timeouts++;
- return memcached_set_error(*ptr, MEMCACHED_TIMEOUT, MEMCACHED_AT);
+ return memcached_set_error(*instance, MEMCACHED_TIMEOUT, MEMCACHED_AT, memcached_literal_param("poll_timeout() was set to zero"));
}
- int local_errno;
size_t loop_max= 5;
while (--loop_max) // While loop is for ERESTART or EINTR
{
- int active_fd= poll(&fds, 1, ptr->root->poll_timeout);
+ int active_fd= poll(&fds, 1, instance->root->poll_timeout);
if (active_fd >= 1)
{
- assert_msg(active_fd == 1 , "poll() returned an unexpected value");
- return MEMCACHED_SUCCESS;
+ assert_msg(active_fd == 1 , "poll() returned an unexpected number of active file descriptors");
+ if (fds.revents & POLLIN or fds.revents & POLLOUT)
+ {
+ return MEMCACHED_SUCCESS;
+ }
+
+ if (fds.revents & POLLHUP)
+ {
+ return memcached_set_error(*instance, MEMCACHED_CONNECTION_FAILURE, MEMCACHED_AT,
+ memcached_literal_param("poll() detected hang up"));
+ }
+
+ if (fds.revents & POLLERR)
+ {
+ int local_errno= EINVAL;
+ int err;
+ socklen_t len= sizeof (err);
+ if (getsockopt(instance->fd, SOL_SOCKET, SO_ERROR, (char*)&err, &len) == 0)
+ {
+ if (err == 0) // treat this as EINTR
+ {
+ continue;
+ }
+ local_errno= err;
+ }
+ memcached_quit_server(instance, true);
+ return memcached_set_errno(*instance, local_errno, MEMCACHED_AT,
+ memcached_literal_param("poll() returned POLLHUP"));
+ }
+
+ return memcached_set_error(*instance, MEMCACHED_FAILURE, MEMCACHED_AT, memcached_literal_param("poll() returned a value that was not dealt with"));
}
- else if (active_fd == 0)
+
+ if (active_fd == 0)
{
- ptr->io_wait_count.timeouts++;
- return memcached_set_error(*ptr, MEMCACHED_TIMEOUT, MEMCACHED_AT);
+ return memcached_set_error(*instance, MEMCACHED_TIMEOUT, MEMCACHED_AT, memcached_literal_param("No active_fd were found"));
}
// Only an error should result in this code being called.
- local_errno= get_socket_errno(); // We cache in case memcached_quit_server() modifies errno
+ int local_errno= get_socket_errno(); // We cache in case memcached_quit_server() modifies errno
assert_msg(active_fd == -1 , "poll() returned an unexpected value");
switch (local_errno)
{
-#ifdef TARGET_OS_LINUX
+#ifdef __linux
case ERESTART:
#endif
case EINTR:
case EFAULT:
case ENOMEM:
- return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
+ memcached_set_error(*instance, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
+ break;
case EINVAL:
- return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, memcached_literal_param("RLIMIT_NOFILE exceeded, or if OSX the timeout value was invalid"));
+ memcached_set_error(*instance, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, memcached_literal_param("RLIMIT_NOFILE exceeded, or if OSX the timeout value was invalid"));
+ break;
default:
- if (fds.revents & POLLERR)
- {
- int err;
- socklen_t len= sizeof (err);
- if (getsockopt(ptr->fd, SOL_SOCKET, SO_ERROR, &err, &len) == 0)
- {
- if (err == 0) // treat this as EINTR
- {
- continue;
- }
- local_errno= err;
- }
- }
- break;
+ memcached_set_errno(*instance, local_errno, MEMCACHED_AT, memcached_literal_param("poll"));
}
- break; // should only occur from poll error
+ break;
}
- memcached_quit_server(ptr, true);
+ memcached_quit_server(instance, true);
+
+ if (memcached_has_error(instance))
+ {
+ return memcached_instance_error_return(instance);
+ }
- return memcached_set_errno(*ptr, local_errno, MEMCACHED_AT);
+ return memcached_set_error(*instance, MEMCACHED_CONNECTION_FAILURE, MEMCACHED_AT,
+ memcached_literal_param("number of attempts to call io_wait() failed"));
}
-static bool io_flush(memcached_server_write_instance_st ptr,
+static bool io_flush(memcached_instance_st* instance,
const bool with_flush,
memcached_return_t& error)
{
** in the purge function to avoid duplicating the logic..
*/
{
- WATCHPOINT_ASSERT(ptr->fd != INVALID_SOCKET);
+ WATCHPOINT_ASSERT(instance->fd != INVALID_SOCKET);
- if (memcached_purge(ptr) == false)
+ if (memcached_purge(instance) == false)
{
return false;
}
}
- char *local_write_ptr= ptr->write_buffer;
- size_t write_length= ptr->write_buffer_offset;
+ char *local_write_ptr= instance->write_buffer;
+ size_t write_length= instance->write_buffer_offset;
error= MEMCACHED_SUCCESS;
- WATCHPOINT_ASSERT(ptr->fd != INVALID_SOCKET);
+ WATCHPOINT_ASSERT(instance->fd != INVALID_SOCKET);
/* Looking for memory overflows */
#if defined(DEBUG)
if (write_length == MEMCACHED_MAX_BUFFER)
- WATCHPOINT_ASSERT(ptr->write_buffer == local_write_ptr);
- WATCHPOINT_ASSERT((ptr->write_buffer + MEMCACHED_MAX_BUFFER) >= (local_write_ptr + write_length));
+ WATCHPOINT_ASSERT(instance->write_buffer == local_write_ptr);
+ WATCHPOINT_ASSERT((instance->write_buffer + MEMCACHED_MAX_BUFFER) >= (local_write_ptr + write_length));
#endif
while (write_length)
{
- WATCHPOINT_ASSERT(ptr->fd != INVALID_SOCKET);
+ WATCHPOINT_ASSERT(instance->fd != INVALID_SOCKET);
WATCHPOINT_ASSERT(write_length > 0);
- int flags= with_flush ? MSG_NOSIGNAL|MSG_DONTWAIT : MSG_NOSIGNAL|MSG_DONTWAIT|MSG_MORE;
- ssize_t sent_length= ::send(ptr->fd, local_write_ptr, write_length, flags);
+ int flags;
+ if (with_flush)
+ {
+ flags= MSG_NOSIGNAL;
+ }
+ else
+ {
+ flags= MSG_NOSIGNAL|MSG_MORE;
+ }
+
+ ssize_t sent_length= ::send(instance->fd, local_write_ptr, write_length, flags);
+ int local_errno= get_socket_errno(); // We cache in case memcached_quit_server() modifies errno
if (sent_length == SOCKET_ERROR)
{
* buffer for more data and retry the write before
* waiting..
*/
- if (repack_input_buffer(ptr) or process_input_buffer(ptr))
+ if (repack_input_buffer(instance) or process_input_buffer(instance))
{
continue;
}
- memcached_return_t rc= io_wait(ptr, MEM_WRITE);
+ memcached_return_t rc= io_wait(instance, POLLOUT);
if (memcached_success(rc))
{
continue;
return false;
}
- memcached_quit_server(ptr, true);
- error= memcached_set_errno(*ptr, get_socket_errno(), MEMCACHED_AT);
+ memcached_quit_server(instance, true);
+ error= memcached_set_errno(*instance, local_errno, MEMCACHED_AT);
return false;
}
case ENOTCONN:
case EPIPE:
default:
- memcached_quit_server(ptr, true);
- error= memcached_set_errno(*ptr, get_socket_errno(), MEMCACHED_AT);
- WATCHPOINT_ASSERT(ptr->fd == INVALID_SOCKET);
+ memcached_quit_server(instance, true);
+ error= memcached_set_errno(*instance, local_errno, MEMCACHED_AT);
+ WATCHPOINT_ASSERT(instance->fd == INVALID_SOCKET);
return false;
}
}
- ptr->io_bytes_sent+= uint32_t(sent_length);
+ instance->io_bytes_sent+= uint32_t(sent_length);
local_write_ptr+= sent_length;
write_length-= uint32_t(sent_length);
}
WATCHPOINT_ASSERT(write_length == 0);
- ptr->write_buffer_offset= 0;
+ instance->write_buffer_offset= 0;
return true;
}
-memcached_return_t memcached_io_wait_for_write(memcached_server_write_instance_st ptr)
+memcached_return_t memcached_io_wait_for_write(memcached_instance_st* instance)
+{
+ return io_wait(instance, POLLOUT);
+}
+
+memcached_return_t memcached_io_wait_for_read(memcached_instance_st* instance)
{
- return io_wait(ptr, MEM_WRITE);
+ return io_wait(instance, POLLIN);
+}
+
+static memcached_return_t _io_fill(memcached_instance_st* instance)
+{
+ ssize_t data_read;
+ do
+ {
+ data_read= ::recv(instance->fd, instance->read_buffer, MEMCACHED_MAX_BUFFER, MSG_NOSIGNAL);
+ int local_errno= get_socket_errno(); // We cache in case memcached_quit_server() modifies errno
+
+ if (data_read == SOCKET_ERROR)
+ {
+ switch (get_socket_errno())
+ {
+ case EINTR: // We just retry
+ continue;
+
+ case ETIMEDOUT: // OSX
+#if EWOULDBLOCK != EAGAIN
+ case EWOULDBLOCK:
+#endif
+ case EAGAIN:
+#ifdef __linux
+ case ERESTART:
+#endif
+ {
+ memcached_return_t io_wait_ret;
+ if (memcached_success(io_wait_ret= io_wait(instance, POLLIN)))
+ {
+ continue;
+ }
+
+ return io_wait_ret;
+ }
+
+ /* fall through */
+
+ case ENOTCONN: // Programmer Error
+ WATCHPOINT_ASSERT(0);
+ // fall through
+ case ENOTSOCK:
+ WATCHPOINT_ASSERT(0);
+ // fall through
+ case EBADF:
+ assert_msg(instance->fd != INVALID_SOCKET, "Programmer error, invalid socket");
+ /* fall through */
+ case EINVAL:
+ case EFAULT:
+ case ECONNREFUSED:
+ default:
+ memcached_quit_server(instance, true);
+ memcached_set_errno(*instance, local_errno, MEMCACHED_AT);
+ break;
+ }
+
+ return memcached_instance_error_return(instance);
+ }
+ else if (data_read == 0)
+ {
+ /*
+ EOF. Any data received so far is incomplete
+ so discard it. This always reads by byte in case of TCP
+ and protocol enforcement happens at memcached_response()
+ looking for '\n'. We do not care for UDB which requests 8 bytes
+ at once. Generally, this means that connection went away. Since
+ for blocking I/O we do not return 0 and for non-blocking case
+ it will return EGAIN if data is not immediatly available.
+ */
+ memcached_quit_server(instance, true);
+ return memcached_set_error(*instance, MEMCACHED_CONNECTION_FAILURE, MEMCACHED_AT,
+ memcached_literal_param("::rec() returned zero, server has disconnected"));
+ }
+ instance->io_wait_count._bytes_read+= data_read;
+ } while (data_read <= 0);
+
+ instance->io_bytes_sent= 0;
+ instance->read_buffer_length= (size_t) data_read;
+ instance->read_ptr= instance->read_buffer;
+
+ return MEMCACHED_SUCCESS;
}
-memcached_return_t memcached_io_read(memcached_server_write_instance_st ptr,
+memcached_return_t memcached_io_read(memcached_instance_st* instance,
void *buffer, size_t length, ssize_t& nread)
{
- assert(memcached_is_udp(ptr->root) == false);
- assert_msg(ptr, "Programmer error, memcached_io_read() recieved an invalid memcached_server_write_instance_st"); // Programmer error
+ assert(memcached_is_udp(instance->root) == false);
+ assert_msg(instance, "Programmer error, memcached_io_read() recieved an invalid Instance"); // Programmer error
char *buffer_ptr= static_cast<char *>(buffer);
- if (ptr->fd == INVALID_SOCKET)
+ if (instance->fd == INVALID_SOCKET)
{
#if 0
- assert_msg(int(ptr->state) <= int(MEMCACHED_SERVER_STATE_ADDRINFO), "Programmer error, invalid socket state");
+ assert_msg(int(instance->state) <= int(MEMCACHED_SERVER_STATE_ADDRINFO), "Programmer error, invalid socket state");
#endif
return MEMCACHED_CONNECTION_FAILURE;
}
while (length)
{
- if (ptr->read_buffer_length == 0)
+ if (instance->read_buffer_length == 0)
{
- ssize_t data_read;
- do
+ memcached_return_t io_fill_ret;
+ if (memcached_fatal(io_fill_ret= _io_fill(instance)))
{
- data_read= ::recv(ptr->fd, ptr->read_buffer, MEMCACHED_MAX_BUFFER, MSG_DONTWAIT);
- if (data_read == SOCKET_ERROR)
- {
- switch (get_socket_errno())
- {
- case EINTR: // We just retry
- continue;
-
- case ETIMEDOUT: // OSX
-#if EWOULDBLOCK != EAGAIN
- case EWOULDBLOCK:
-#endif
- case EAGAIN:
-#ifdef TARGET_OS_LINUX
- case ERESTART:
-#endif
- {
- memcached_return_t io_wait_ret;
- if (memcached_success(io_wait_ret= io_wait(ptr, MEM_READ)))
- {
- continue;
- }
-
- return io_wait_ret;
- }
-
- /* fall through */
-
- case ENOTCONN: // Programmer Error
- WATCHPOINT_ASSERT(0);
- case ENOTSOCK:
- WATCHPOINT_ASSERT(0);
- case EBADF:
- assert_msg(ptr->fd != INVALID_SOCKET, "Programmer error, invalid socket");
- case EINVAL:
- case EFAULT:
- case ECONNREFUSED:
- default:
- {
- memcached_quit_server(ptr, true);
- nread= -1;
- return memcached_set_errno(*ptr, get_socket_errno(), MEMCACHED_AT);
- }
- }
- }
- else if (data_read == 0)
- {
- /*
- EOF. Any data received so far is incomplete
- so discard it. This always reads by byte in case of TCP
- and protocol enforcement happens at memcached_response()
- looking for '\n'. We do not care for UDB which requests 8 bytes
- at once. Generally, this means that connection went away. Since
- for blocking I/O we do not return 0 and for non-blocking case
- it will return EGAIN if data is not immediatly available.
- */
- memcached_quit_server(ptr, true);
- nread= -1;
- return memcached_set_error(*ptr, MEMCACHED_CONNECTION_FAILURE, MEMCACHED_AT,
- memcached_literal_param("::rec() returned zero, server has disconnected"));
- }
- ptr->io_wait_count._bytes_read+= data_read;
- } while (data_read <= 0);
-
- ptr->io_bytes_sent= 0;
- ptr->read_data_length= (size_t) data_read;
- ptr->read_buffer_length= (size_t) data_read;
- ptr->read_ptr= ptr->read_buffer;
+ nread= -1;
+ return io_fill_ret;
+ }
}
if (length > 1)
{
- size_t difference;
+ size_t difference= (length > instance->read_buffer_length) ? instance->read_buffer_length : length;
- difference= (length > ptr->read_buffer_length) ? ptr->read_buffer_length : length;
-
- memcpy(buffer_ptr, ptr->read_ptr, difference);
+ memcpy(buffer_ptr, instance->read_ptr, difference);
length -= difference;
- ptr->read_ptr+= difference;
- ptr->read_buffer_length-= difference;
+ instance->read_ptr+= difference;
+ instance->read_buffer_length-= difference;
buffer_ptr+= difference;
}
else
{
- *buffer_ptr= *ptr->read_ptr;
- ptr->read_ptr++;
- ptr->read_buffer_length--;
+ *buffer_ptr= *instance->read_ptr;
+ instance->read_ptr++;
+ instance->read_buffer_length--;
buffer_ptr++;
break;
}
return MEMCACHED_SUCCESS;
}
-memcached_return_t memcached_io_slurp(memcached_server_write_instance_st ptr)
+memcached_return_t memcached_io_slurp(memcached_instance_st* instance)
{
- assert_msg(ptr, "Programmer error, invalid memcached_server_write_instance_st");
- assert(memcached_is_udp(ptr->root) == false);
+ assert_msg(instance, "Programmer error, invalid Instance");
+ assert(memcached_is_udp(instance->root) == false);
- if (ptr->fd == INVALID_SOCKET)
+ if (instance->fd == INVALID_SOCKET)
{
- assert_msg(int(ptr->state) <= int(MEMCACHED_SERVER_STATE_ADDRINFO), "Invalid socket state");
+ assert_msg(int(instance->state) <= int(MEMCACHED_SERVER_STATE_ADDRINFO), "Invalid socket state");
return MEMCACHED_CONNECTION_FAILURE;
}
char buffer[MEMCACHED_MAX_BUFFER];
do
{
- data_read= recv(ptr->fd, ptr->read_buffer, sizeof(buffer), MSG_DONTWAIT);
+ data_read= ::recv(instance->fd, instance->read_buffer, sizeof(buffer), MSG_NOSIGNAL);
if (data_read == SOCKET_ERROR)
{
switch (get_socket_errno())
case EWOULDBLOCK:
#endif
case EAGAIN:
-#ifdef TARGET_OS_LINUX
+#ifdef __linux
case ERESTART:
#endif
- if (memcached_success(io_wait(ptr, MEM_READ)))
+ if (memcached_success(io_wait(instance, POLLIN)))
{
continue;
}
/* fall through */
case ENOTCONN: // Programmer Error
- assert(0);
case ENOTSOCK:
assert(0);
+ /* fall through */
case EBADF:
- assert_msg(ptr->fd != INVALID_SOCKET, "Invalid socket state");
+ assert_msg(instance->fd != INVALID_SOCKET, "Invalid socket state");
+ /* fall through */
case EINVAL:
case EFAULT:
case ECONNREFUSED:
return MEMCACHED_CONNECTION_FAILURE;
}
-static bool _io_write(memcached_server_write_instance_st ptr,
+static bool _io_write(memcached_instance_st* instance,
const void *buffer, size_t length, bool with_flush,
size_t& written)
{
- assert(ptr->fd != INVALID_SOCKET);
- assert(memcached_is_udp(ptr->root) == false);
+ assert(instance->fd != INVALID_SOCKET);
+ assert(memcached_is_udp(instance->root) == false);
const char *buffer_ptr= static_cast<const char *>(buffer);
{
char *write_ptr;
size_t buffer_end= MEMCACHED_MAX_BUFFER;
- size_t should_write= buffer_end -ptr->write_buffer_offset;
+ size_t should_write= buffer_end -instance->write_buffer_offset;
should_write= (should_write < length) ? should_write : length;
- write_ptr= ptr->write_buffer + ptr->write_buffer_offset;
+ write_ptr= instance->write_buffer + instance->write_buffer_offset;
memcpy(write_ptr, buffer_ptr, should_write);
- ptr->write_buffer_offset+= should_write;
+ instance->write_buffer_offset+= should_write;
buffer_ptr+= should_write;
length-= should_write;
- if (ptr->write_buffer_offset == buffer_end)
+ if (instance->write_buffer_offset == buffer_end)
{
- WATCHPOINT_ASSERT(ptr->fd != INVALID_SOCKET);
+ WATCHPOINT_ASSERT(instance->fd != INVALID_SOCKET);
memcached_return_t rc;
- if (io_flush(ptr, with_flush, rc) == false)
+ if (io_flush(instance, with_flush, rc) == false)
{
written= original_length -length;
return false;
if (with_flush)
{
memcached_return_t rc;
- WATCHPOINT_ASSERT(ptr->fd != INVALID_SOCKET);
- if (io_flush(ptr, with_flush, rc) == false)
+ WATCHPOINT_ASSERT(instance->fd != INVALID_SOCKET);
+ if (io_flush(instance, with_flush, rc) == false)
{
written= original_length -length;
return false;
return true;
}
-bool memcached_io_write(memcached_server_write_instance_st ptr)
+bool memcached_io_write(memcached_instance_st* instance)
{
size_t written;
- return _io_write(ptr, NULL, 0, true, written);
+ return _io_write(instance, NULL, 0, true, written);
}
-ssize_t memcached_io_write(memcached_server_write_instance_st ptr,
+ssize_t memcached_io_write(memcached_instance_st* instance,
const void *buffer, const size_t length, const bool with_flush)
{
size_t written;
- if (_io_write(ptr, buffer, length, with_flush, written) == false)
+ if (_io_write(instance, buffer, length, with_flush, written) == false)
{
return -1;
}
return ssize_t(written);
}
-bool memcached_io_writev(memcached_server_write_instance_st ptr,
- libmemcached_io_vector_st vector[],
- const size_t number_of, const bool with_flush)
+bool memcached_io_writev(memcached_instance_st* instance,
+ libmemcached_io_vector_st vector[],
+ const size_t number_of, const bool with_flush)
{
ssize_t complete_total= 0;
ssize_t total= 0;
if (vector->length)
{
size_t written;
- if ((_io_write(ptr, vector->buffer, vector->length, false, written)) == false)
+ if ((_io_write(instance, vector->buffer, vector->length, false, written)) == false)
{
return false;
}
if (with_flush)
{
- if (memcached_io_write(ptr) == false)
+ if (memcached_io_write(instance) == false)
{
return false;
}
return (complete_total == total);
}
-
-void memcached_io_close(memcached_server_write_instance_st ptr)
+void memcached_instance_st::start_close_socket()
{
- if (ptr->fd == INVALID_SOCKET)
+ if (fd != INVALID_SOCKET)
{
- return;
+ shutdown(fd, SHUT_WR);
+ options.is_shutting_down= true;
}
+}
- /* in case of death shutdown to avoid blocking at close() */
- if (shutdown(ptr->fd, SHUT_RDWR) == SOCKET_ERROR && get_socket_errno() != ENOTCONN)
+void memcached_instance_st::reset_socket()
+{
+ if (fd != INVALID_SOCKET)
{
- WATCHPOINT_NUMBER(ptr->fd);
- WATCHPOINT_ERRNO(get_socket_errno());
- WATCHPOINT_ASSERT(get_socket_errno());
+ (void)closesocket(fd);
+ fd= INVALID_SOCKET;
}
+}
- if (closesocket(ptr->fd) == SOCKET_ERROR)
+void memcached_instance_st::close_socket()
+{
+ if (fd != INVALID_SOCKET)
{
- WATCHPOINT_ERRNO(get_socket_errno());
+ int shutdown_options= SHUT_RD;
+ if (options.is_shutting_down == false)
+ {
+ shutdown_options= SHUT_RDWR;
+ }
+
+ /* in case of death shutdown to avoid blocking at close() */
+ if (shutdown(fd, shutdown_options) == SOCKET_ERROR and get_socket_errno() != ENOTCONN)
+ {
+ WATCHPOINT_NUMBER(fd);
+ WATCHPOINT_ERRNO(get_socket_errno());
+ WATCHPOINT_ASSERT(get_socket_errno());
+ }
+
+ reset_socket();
+ state= MEMCACHED_SERVER_STATE_NEW;
}
- ptr->state= MEMCACHED_SERVER_STATE_NEW;
- ptr->fd= INVALID_SOCKET;
+
+ state= MEMCACHED_SERVER_STATE_NEW;
+ cursor_active_= 0;
+ io_bytes_sent= 0;
+ write_buffer_offset= size_t(root and memcached_is_udp(root) ? UDP_DATAGRAM_HEADER_LENGTH : 0);
+ read_buffer_length= 0;
+ read_ptr= read_buffer;
+ options.is_shutting_down= false;
+ memcached_server_response_reset(this);
+
+ // We reset the version so that if we end up talking to a different server
+ // we don't have stale server version information.
+ major_version= minor_version= micro_version= UINT8_MAX;
}
-memcached_server_write_instance_st memcached_io_get_readable_server(memcached_st *memc)
+memcached_instance_st* memcached_io_get_readable_server(Memcached *memc, memcached_return_t&)
{
#define MAX_SERVERS_TO_POLL 100
struct pollfd fds[MAX_SERVERS_TO_POLL];
for (uint32_t x= 0; x < memcached_server_count(memc) and host_index < MAX_SERVERS_TO_POLL; ++x)
{
- memcached_server_write_instance_st instance= memcached_server_instance_fetch(memc, x);
+ memcached_instance_st* instance= memcached_instance_fetch(memc, x);
if (instance->read_buffer_length > 0) /* I have data in the buffer */
{
return instance;
}
- if (memcached_server_response_count(instance) > 0)
+ if (instance->response_count() > 0)
{
- fds[host_index].events = POLLIN;
- fds[host_index].revents = 0;
- fds[host_index].fd = instance->fd;
+ fds[host_index].events= POLLIN;
+ fds[host_index].revents= 0;
+ fds[host_index].fd= instance->fd;
++host_index;
}
}
/* We have 0 or 1 server with pending events.. */
for (uint32_t x= 0; x< memcached_server_count(memc); ++x)
{
- memcached_server_write_instance_st instance=
- memcached_server_instance_fetch(memc, x);
+ memcached_instance_st* instance= memcached_instance_fetch(memc, x);
- if (memcached_server_response_count(instance) > 0)
+ if (instance->response_count() > 0)
{
return instance;
}
{
for (uint32_t y= 0; y < memcached_server_count(memc); ++y)
{
- memcached_server_write_instance_st instance= memcached_server_instance_fetch(memc, y);
+ memcached_instance_st* instance= memcached_instance_fetch(memc, y);
if (instance->fd == fds[x].fd)
{
/*
Eventually we will just kill off the server with the problem.
*/
-void memcached_io_reset(memcached_server_write_instance_st ptr)
+void memcached_io_reset(memcached_instance_st* instance)
{
- memcached_quit_server(ptr, true);
+ memcached_quit_server(instance, true);
}
/**
* Read a given number of bytes from the server and place it into a specific
* buffer. Reset the IO channel on this server if an error occurs.
*/
-memcached_return_t memcached_safe_read(memcached_server_write_instance_st ptr,
+memcached_return_t memcached_safe_read(memcached_instance_st* instance,
void *dta,
const size_t size)
{
ssize_t nread;
memcached_return_t rc;
- while (memcached_continue(rc= memcached_io_read(ptr, data + offset, size - offset, nread))) { };
+ while (memcached_continue(rc= memcached_io_read(instance, data + offset, size - offset, nread))) { };
if (memcached_failed(rc))
{
return MEMCACHED_SUCCESS;
}
-memcached_return_t memcached_io_readline(memcached_server_write_instance_st ptr,
+memcached_return_t memcached_io_readline(memcached_instance_st* instance,
char *buffer_ptr,
size_t size,
size_t& total_nr)
while (line_complete == false)
{
- if (ptr->read_buffer_length == 0)
+ if (instance->read_buffer_length == 0)
{
/*
* We don't have any data in the buffer, so let's fill the read
* the logic.
*/
ssize_t nread;
- memcached_return_t rc= memcached_io_read(ptr, buffer_ptr, 1, nread);
+ memcached_return_t rc= memcached_io_read(instance, buffer_ptr, 1, nread);
if (memcached_failed(rc) and rc == MEMCACHED_IN_PROGRESS)
{
- memcached_quit_server(ptr, true);
- return memcached_set_error(*ptr, rc, MEMCACHED_AT);
+ memcached_quit_server(instance, true);
+ return memcached_set_error(*instance, rc, MEMCACHED_AT);
}
else if (memcached_failed(rc))
{
}
/* Now let's look in the buffer and copy as we go! */
- while (ptr->read_buffer_length and total_nr < size and line_complete == false)
+ while (instance->read_buffer_length and total_nr < size and line_complete == false)
{
- *buffer_ptr = *ptr->read_ptr;
+ *buffer_ptr = *instance->read_ptr;
if (*buffer_ptr == '\n')
{
line_complete = true;
}
- --ptr->read_buffer_length;
- ++ptr->read_ptr;
+ --instance->read_buffer_length;
+ ++instance->read_ptr;
++total_nr;
++buffer_ptr;
}
projects / awesomized / libmemcached / blobdiff